Merging upstream version 1:4.15.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

169 files changed, 6772 insertions, 5073 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 3a50b46..22abb97 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -5,57 +5,129 @@ DEFS =
 
 noinst_LTLIBRARIES = libshadow.la
 
+if USE_PAM
+LIBCRYPT_PAM = $(LIBCRYPT)
+else
+LIBCRYPT_PAM =
+endif
+
+AM_CPPFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir) $(ECONF_CPPFLAGS)
+
 libshadow_la_CPPFLAGS = $(ECONF_CPPFLAGS)
 if HAVE_VENDORDIR
 libshadow_la_CPPFLAGS += -DVENDORDIR=\"$(VENDORDIR)\"
 endif
 
 libshadow_la_CPPFLAGS += -I$(top_srcdir)
+libshadow_la_CFLAGS = $(LIBBSD_CFLAGS) $(LIBCRYPT_PAM) $(LIBSYSTEMD)
+libshadow_la_LIBADD = $(LIBADD_DLOPEN)
 
 libshadow_la_SOURCES = \
+	addgrps.c \
+	adds.c \
+	adds.h \
+	age.c \
+	agetpass.c \
+	agetpass.h \
+	alloc.c \
+	alloc.h \
+	atoi/a2i.c \
+	atoi/a2i.h \
+	atoi/str2i.c \
+	atoi/str2i.h \
+	atoi/strtoi.c \
+	atoi/strtoi.h \
+	atoi/strtou_noneg.c \
+	atoi/strtou_noneg.h \
+	attr.h \
+	audit_help.c \
+	basename.c \
+	bit.c \
+	bit.h \
+	cast.h \
+	chkname.c \
+	chkname.h \
+	chowndir.c \
+	chowntty.c \
+	cleanup.c \
+	cleanup_group.c \
+	cleanup_user.c \
 	commonio.c \
 	commonio.h \
+	console.c \
+	copydir.c \
+	csrand.c \
 	defines.h \
 	encrypt.c \
+	env.c \
 	exitcodes.h \
 	faillog.h \
+	failure.c \
+	failure.h \
+	fd.c \
 	fields.c \
+	find_new_gid.c \
+	find_new_uid.c \
+	find_new_sub_gids.c \
+	find_new_sub_uids.c \
 	fputsx.c \
-	getdef.c \
-	getdef.h \
 	get_gid.c \
-	getlong.c \
 	get_pid.c \
 	get_uid.c \
-	getulong.c \
+	getdate.h \
+	getdate.y \
+	getdef.c \
+	getdef.h \
+	getgr_nam_gid.c \
+	getrange.c \
+	gettime.c \
 	groupio.c \
 	groupmem.c \
 	groupio.h \
 	gshadow.c \
+	hushed.c \
+	idmapping.h \
+	idmapping.c \
+	isexpired.c \
+	limits.c \
+	list.c \
 	lockpw.c \
+	loginprompt.c \
+	mail.c \
+	memzero.c \
+	memzero.h \
+	motd.c \
+	must_be.h \
+	myname.c \
 	nss.c \
 	nscd.c \
 	nscd.h \
-	shadowlog.c \
-	shadowlog.h \
-	shadowlog_internal.h \
-	sssd.c \
-	sssd.h \
+	obscure.c \
 	pam_defs.h \
+	pam_pass.c \
+	pam_pass_non_interactive.c \
 	port.c \
 	port.h \
+	prefix_flag.c \
 	prototypes.h \
 	pwauth.c \
 	pwauth.h \
 	pwio.c \
 	pwio.h \
+	pwd_init.c \
+	pwd2spwd.c \
+	pwdcheck.c \
 	pwmem.c \
+	remove_tree.c \
+	rlogin.c \
+	root_flag.c \
 	run_part.h \
 	run_part.c \
-	subordinateio.h \
-	subordinateio.c \
+	salt.c \
 	selinux.c \
 	semanage.c \
+	setugid.c \
+	setupenv.c \
 	sgetgrent.c \
 	sgetpwent.c \
 	sgetspent.c \
@@ -64,14 +136,74 @@ libshadow_la_SOURCES = \
 	shadow.c \
 	shadowio.c \
 	shadowio.h \
+	shadowlog.c \
+	shadowlog.h \
+	shadowlog_internal.h \
 	shadowmem.c \
+	shell.c \
+	sizeof.h \
 	spawn.c \
-	utent.c
+	sssd.c \
+	sssd.h \
+	string/sprintf.c \
+	string/sprintf.h \
+	string/stpecpy.c \
+	string/stpecpy.h \
+	string/stpeprintf.c \
+	string/stpeprintf.h \
+	string/strftime.c \
+	string/strftime.h \
+	string/strncpy.h \
+	string/strtcpy.c \
+	string/strtcpy.h \
+	string/zustr2stp.h \
+	strtoday.c \
+	sub.c \
+	subordinateio.h \
+	subordinateio.c \
+	sulog.c \
+	time/day_to_str.c \
+	time/day_to_str.h \
+	ttytype.c \
+	tz.c \
+	ulimit.c \
+	user_busy.c \
+	valid.c \
+	write_full.c \
+	xgetpwnam.c \
+	xprefix_getpwnam.c \
+	xgetpwuid.c \
+	xgetgrnam.c \
+	xgetgrgid.c \
+	xgetspnam.c \
+	yesno.c
 
 if WITH_TCB
 libshadow_la_SOURCES += tcbfuncs.c tcbfuncs.h
 endif
 
+if WITH_BTRFS
+libshadow_la_SOURCES += btrfs.c
+endif
+
+if ENABLE_LASTLOG
+libshadow_la_SOURCES += log.c
+endif
+
+if ENABLE_LOGIND
+libshadow_la_SOURCES += logind.c
+else
+libshadow_la_SOURCES += utmp.c
+endif
+
+if !WITH_LIBBSD
+libshadow_la_SOURCES += \
+	freezero.h \
+	freezero.c \
+	readpassphrase.h \
+	readpassphrase.c
+endif
+
 # These files are unneeded for some reason, listed in
 # order of appearance:
 #
@@ -79,4 +211,5 @@ endif
 
 EXTRA_DIST = \
 	.indent.pro \
-	gshadow_.h
+	gshadow_.h \
+	xgetXXbyYY.c
diff --git a/lib/Makefile.in b/lib/Makefile.in
index 9eef01c..1b4f0fe 100644
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
@@ -90,6 +90,16 @@ build_triplet = @build@
 host_triplet = @host@
 @HAVE_VENDORDIR_TRUE@am__append_1 = -DVENDORDIR=\"$(VENDORDIR)\"
 @WITH_TCB_TRUE@am__append_2 = tcbfuncs.c tcbfuncs.h
+@WITH_BTRFS_TRUE@am__append_3 = btrfs.c
+@ENABLE_LASTLOG_TRUE@am__append_4 = log.c
+@ENABLE_LOGIND_TRUE@am__append_5 = logind.c
+@ENABLE_LOGIND_FALSE@am__append_6 = utmp.c
+@WITH_LIBBSD_FALSE@am__append_7 = \
+@WITH_LIBBSD_FALSE@	freezero.h \
+@WITH_LIBBSD_FALSE@	freezero.c \
+@WITH_LIBBSD_FALSE@	readpassphrase.h \
+@WITH_LIBBSD_FALSE@	readpassphrase.c
+
 subdir = lib
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/m4/gettext.m4 \
@@ -109,41 +119,116 @@ CONFIG_HEADER = $(top_builddir)/config.h
 CONFIG_CLEAN_FILES =
 CONFIG_CLEAN_VPATH_FILES =
 LTLIBRARIES = $(noinst_LTLIBRARIES)
-libshadow_la_LIBADD =
-am__libshadow_la_SOURCES_DIST = commonio.c commonio.h defines.h \
-	encrypt.c exitcodes.h faillog.h fields.c fputsx.c getdef.c \
-	getdef.h get_gid.c getlong.c get_pid.c get_uid.c getulong.c \
-	groupio.c groupmem.c groupio.h gshadow.c lockpw.c nss.c nscd.c \
-	nscd.h shadowlog.c shadowlog.h shadowlog_internal.h sssd.c \
-	sssd.h pam_defs.h port.c port.h prototypes.h pwauth.c pwauth.h \
-	pwio.c pwio.h pwmem.c run_part.h run_part.c subordinateio.h \
-	subordinateio.c selinux.c semanage.c sgetgrent.c sgetpwent.c \
+am__DEPENDENCIES_1 =
+libshadow_la_DEPENDENCIES = $(am__DEPENDENCIES_1)
+am__libshadow_la_SOURCES_DIST = addgrps.c adds.c adds.h age.c \
+	agetpass.c agetpass.h alloc.c alloc.h atoi/a2i.c atoi/a2i.h \
+	atoi/str2i.c atoi/str2i.h atoi/strtoi.c atoi/strtoi.h \
+	atoi/strtou_noneg.c atoi/strtou_noneg.h attr.h audit_help.c \
+	basename.c bit.c bit.h cast.h chkname.c chkname.h chowndir.c \
+	chowntty.c cleanup.c cleanup_group.c cleanup_user.c commonio.c \
+	commonio.h console.c copydir.c csrand.c defines.h encrypt.c \
+	env.c exitcodes.h faillog.h failure.c failure.h fd.c fields.c \
+	find_new_gid.c find_new_uid.c find_new_sub_gids.c \
+	find_new_sub_uids.c fputsx.c get_gid.c get_pid.c get_uid.c \
+	getdate.h getdate.y getdef.c getdef.h getgr_nam_gid.c \
+	getrange.c gettime.c groupio.c groupmem.c groupio.h gshadow.c \
+	hushed.c idmapping.h idmapping.c isexpired.c limits.c list.c \
+	lockpw.c loginprompt.c mail.c memzero.c memzero.h motd.c \
+	must_be.h myname.c nss.c nscd.c nscd.h obscure.c pam_defs.h \
+	pam_pass.c pam_pass_non_interactive.c port.c port.h \
+	prefix_flag.c prototypes.h pwauth.c pwauth.h pwio.c pwio.h \
+	pwd_init.c pwd2spwd.c pwdcheck.c pwmem.c remove_tree.c \
+	rlogin.c root_flag.c run_part.h run_part.c salt.c selinux.c \
+	semanage.c setugid.c setupenv.c sgetgrent.c sgetpwent.c \
 	sgetspent.c sgroupio.c sgroupio.h shadow.c shadowio.c \
-	shadowio.h shadowmem.c spawn.c utent.c tcbfuncs.c tcbfuncs.h
+	shadowio.h shadowlog.c shadowlog.h shadowlog_internal.h \
+	shadowmem.c shell.c sizeof.h spawn.c sssd.c sssd.h \
+	string/sprintf.c string/sprintf.h string/stpecpy.c \
+	string/stpecpy.h string/stpeprintf.c string/stpeprintf.h \
+	string/strftime.c string/strftime.h string/strncpy.h \
+	string/strtcpy.c string/strtcpy.h string/zustr2stp.h \
+	strtoday.c sub.c subordinateio.h subordinateio.c sulog.c \
+	time/day_to_str.c time/day_to_str.h ttytype.c tz.c ulimit.c \
+	user_busy.c valid.c write_full.c xgetpwnam.c \
+	xprefix_getpwnam.c xgetpwuid.c xgetgrnam.c xgetgrgid.c \
+	xgetspnam.c yesno.c tcbfuncs.c tcbfuncs.h btrfs.c log.c \
+	logind.c utmp.c freezero.h freezero.c readpassphrase.h \
+	readpassphrase.c
+am__dirstamp = $(am__leading_dot)dirstamp
 @WITH_TCB_TRUE@am__objects_1 = libshadow_la-tcbfuncs.lo
-am_libshadow_la_OBJECTS = libshadow_la-commonio.lo \
-	libshadow_la-encrypt.lo libshadow_la-fields.lo \
-	libshadow_la-fputsx.lo libshadow_la-getdef.lo \
-	libshadow_la-get_gid.lo libshadow_la-getlong.lo \
-	libshadow_la-get_pid.lo libshadow_la-get_uid.lo \
-	libshadow_la-getulong.lo libshadow_la-groupio.lo \
-	libshadow_la-groupmem.lo libshadow_la-gshadow.lo \
-	libshadow_la-lockpw.lo libshadow_la-nss.lo \
-	libshadow_la-nscd.lo libshadow_la-shadowlog.lo \
-	libshadow_la-sssd.lo libshadow_la-port.lo \
-	libshadow_la-pwauth.lo libshadow_la-pwio.lo \
-	libshadow_la-pwmem.lo libshadow_la-run_part.lo \
-	libshadow_la-subordinateio.lo libshadow_la-selinux.lo \
-	libshadow_la-semanage.lo libshadow_la-sgetgrent.lo \
-	libshadow_la-sgetpwent.lo libshadow_la-sgetspent.lo \
-	libshadow_la-sgroupio.lo libshadow_la-shadow.lo \
-	libshadow_la-shadowio.lo libshadow_la-shadowmem.lo \
-	libshadow_la-spawn.lo libshadow_la-utent.lo $(am__objects_1)
+@WITH_BTRFS_TRUE@am__objects_2 = libshadow_la-btrfs.lo
+@ENABLE_LASTLOG_TRUE@am__objects_3 = libshadow_la-log.lo
+@ENABLE_LOGIND_TRUE@am__objects_4 = libshadow_la-logind.lo
+@ENABLE_LOGIND_FALSE@am__objects_5 = libshadow_la-utmp.lo
+@WITH_LIBBSD_FALSE@am__objects_6 = libshadow_la-freezero.lo \
+@WITH_LIBBSD_FALSE@	libshadow_la-readpassphrase.lo
+am_libshadow_la_OBJECTS = libshadow_la-addgrps.lo libshadow_la-adds.lo \
+	libshadow_la-age.lo libshadow_la-agetpass.lo \
+	libshadow_la-alloc.lo atoi/libshadow_la-a2i.lo \
+	atoi/libshadow_la-str2i.lo atoi/libshadow_la-strtoi.lo \
+	atoi/libshadow_la-strtou_noneg.lo libshadow_la-audit_help.lo \
+	libshadow_la-basename.lo libshadow_la-bit.lo \
+	libshadow_la-chkname.lo libshadow_la-chowndir.lo \
+	libshadow_la-chowntty.lo libshadow_la-cleanup.lo \
+	libshadow_la-cleanup_group.lo libshadow_la-cleanup_user.lo \
+	libshadow_la-commonio.lo libshadow_la-console.lo \
+	libshadow_la-copydir.lo libshadow_la-csrand.lo \
+	libshadow_la-encrypt.lo libshadow_la-env.lo \
+	libshadow_la-failure.lo libshadow_la-fd.lo \
+	libshadow_la-fields.lo libshadow_la-find_new_gid.lo \
+	libshadow_la-find_new_uid.lo libshadow_la-find_new_sub_gids.lo \
+	libshadow_la-find_new_sub_uids.lo libshadow_la-fputsx.lo \
+	libshadow_la-get_gid.lo libshadow_la-get_pid.lo \
+	libshadow_la-get_uid.lo libshadow_la-getdate.lo \
+	libshadow_la-getdef.lo libshadow_la-getgr_nam_gid.lo \
+	libshadow_la-getrange.lo libshadow_la-gettime.lo \
+	libshadow_la-groupio.lo libshadow_la-groupmem.lo \
+	libshadow_la-gshadow.lo libshadow_la-hushed.lo \
+	libshadow_la-idmapping.lo libshadow_la-isexpired.lo \
+	libshadow_la-limits.lo libshadow_la-list.lo \
+	libshadow_la-lockpw.lo libshadow_la-loginprompt.lo \
+	libshadow_la-mail.lo libshadow_la-memzero.lo \
+	libshadow_la-motd.lo libshadow_la-myname.lo \
+	libshadow_la-nss.lo libshadow_la-nscd.lo \
+	libshadow_la-obscure.lo libshadow_la-pam_pass.lo \
+	libshadow_la-pam_pass_non_interactive.lo libshadow_la-port.lo \
+	libshadow_la-prefix_flag.lo libshadow_la-pwauth.lo \
+	libshadow_la-pwio.lo libshadow_la-pwd_init.lo \
+	libshadow_la-pwd2spwd.lo libshadow_la-pwdcheck.lo \
+	libshadow_la-pwmem.lo libshadow_la-remove_tree.lo \
+	libshadow_la-rlogin.lo libshadow_la-root_flag.lo \
+	libshadow_la-run_part.lo libshadow_la-salt.lo \
+	libshadow_la-selinux.lo libshadow_la-semanage.lo \
+	libshadow_la-setugid.lo libshadow_la-setupenv.lo \
+	libshadow_la-sgetgrent.lo libshadow_la-sgetpwent.lo \
+	libshadow_la-sgetspent.lo libshadow_la-sgroupio.lo \
+	libshadow_la-shadow.lo libshadow_la-shadowio.lo \
+	libshadow_la-shadowlog.lo libshadow_la-shadowmem.lo \
+	libshadow_la-shell.lo libshadow_la-spawn.lo \
+	libshadow_la-sssd.lo string/libshadow_la-sprintf.lo \
+	string/libshadow_la-stpecpy.lo \
+	string/libshadow_la-stpeprintf.lo \
+	string/libshadow_la-strftime.lo string/libshadow_la-strtcpy.lo \
+	libshadow_la-strtoday.lo libshadow_la-sub.lo \
+	libshadow_la-subordinateio.lo libshadow_la-sulog.lo \
+	time/libshadow_la-day_to_str.lo libshadow_la-ttytype.lo \
+	libshadow_la-tz.lo libshadow_la-ulimit.lo \
+	libshadow_la-user_busy.lo libshadow_la-valid.lo \
+	libshadow_la-write_full.lo libshadow_la-xgetpwnam.lo \
+	libshadow_la-xprefix_getpwnam.lo libshadow_la-xgetpwuid.lo \
+	libshadow_la-xgetgrnam.lo libshadow_la-xgetgrgid.lo \
+	libshadow_la-xgetspnam.lo libshadow_la-yesno.lo \
+	$(am__objects_1) $(am__objects_2) $(am__objects_3) \
+	$(am__objects_4) $(am__objects_5) $(am__objects_6)
 libshadow_la_OBJECTS = $(am_libshadow_la_OBJECTS)
 AM_V_lt = $(am__v_lt_@AM_V@)
 am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
 am__v_lt_0 = --silent
 am__v_lt_1 = 
+libshadow_la_LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(libshadow_la_CFLAGS) \
+	$(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
 am__v_P_0 = false
@@ -159,29 +244,83 @@ am__v_at_1 =
 DEFAULT_INCLUDES = -I.@am__isrc@ -I$(top_builddir)
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__maybe_remake_depfiles = depfiles
-am__depfiles_remade = ./$(DEPDIR)/libshadow_la-commonio.Plo \
+am__depfiles_remade = ./$(DEPDIR)/libshadow_la-addgrps.Plo \
+	./$(DEPDIR)/libshadow_la-adds.Plo \
+	./$(DEPDIR)/libshadow_la-age.Plo \
+	./$(DEPDIR)/libshadow_la-agetpass.Plo \
+	./$(DEPDIR)/libshadow_la-alloc.Plo \
+	./$(DEPDIR)/libshadow_la-audit_help.Plo \
+	./$(DEPDIR)/libshadow_la-basename.Plo \
+	./$(DEPDIR)/libshadow_la-bit.Plo \
+	./$(DEPDIR)/libshadow_la-btrfs.Plo \
+	./$(DEPDIR)/libshadow_la-chkname.Plo \
+	./$(DEPDIR)/libshadow_la-chowndir.Plo \
+	./$(DEPDIR)/libshadow_la-chowntty.Plo \
+	./$(DEPDIR)/libshadow_la-cleanup.Plo \
+	./$(DEPDIR)/libshadow_la-cleanup_group.Plo \
+	./$(DEPDIR)/libshadow_la-cleanup_user.Plo \
+	./$(DEPDIR)/libshadow_la-commonio.Plo \
+	./$(DEPDIR)/libshadow_la-console.Plo \
+	./$(DEPDIR)/libshadow_la-copydir.Plo \
+	./$(DEPDIR)/libshadow_la-csrand.Plo \
 	./$(DEPDIR)/libshadow_la-encrypt.Plo \
+	./$(DEPDIR)/libshadow_la-env.Plo \
+	./$(DEPDIR)/libshadow_la-failure.Plo \
+	./$(DEPDIR)/libshadow_la-fd.Plo \
 	./$(DEPDIR)/libshadow_la-fields.Plo \
+	./$(DEPDIR)/libshadow_la-find_new_gid.Plo \
+	./$(DEPDIR)/libshadow_la-find_new_sub_gids.Plo \
+	./$(DEPDIR)/libshadow_la-find_new_sub_uids.Plo \
+	./$(DEPDIR)/libshadow_la-find_new_uid.Plo \
 	./$(DEPDIR)/libshadow_la-fputsx.Plo \
+	./$(DEPDIR)/libshadow_la-freezero.Plo \
 	./$(DEPDIR)/libshadow_la-get_gid.Plo \
 	./$(DEPDIR)/libshadow_la-get_pid.Plo \
 	./$(DEPDIR)/libshadow_la-get_uid.Plo \
+	./$(DEPDIR)/libshadow_la-getdate.Plo \
 	./$(DEPDIR)/libshadow_la-getdef.Plo \
-	./$(DEPDIR)/libshadow_la-getlong.Plo \
-	./$(DEPDIR)/libshadow_la-getulong.Plo \
+	./$(DEPDIR)/libshadow_la-getgr_nam_gid.Plo \
+	./$(DEPDIR)/libshadow_la-getrange.Plo \
+	./$(DEPDIR)/libshadow_la-gettime.Plo \
 	./$(DEPDIR)/libshadow_la-groupio.Plo \
 	./$(DEPDIR)/libshadow_la-groupmem.Plo \
 	./$(DEPDIR)/libshadow_la-gshadow.Plo \
+	./$(DEPDIR)/libshadow_la-hushed.Plo \
+	./$(DEPDIR)/libshadow_la-idmapping.Plo \
+	./$(DEPDIR)/libshadow_la-isexpired.Plo \
+	./$(DEPDIR)/libshadow_la-limits.Plo \
+	./$(DEPDIR)/libshadow_la-list.Plo \
 	./$(DEPDIR)/libshadow_la-lockpw.Plo \
+	./$(DEPDIR)/libshadow_la-log.Plo \
+	./$(DEPDIR)/libshadow_la-logind.Plo \
+	./$(DEPDIR)/libshadow_la-loginprompt.Plo \
+	./$(DEPDIR)/libshadow_la-mail.Plo \
+	./$(DEPDIR)/libshadow_la-memzero.Plo \
+	./$(DEPDIR)/libshadow_la-motd.Plo \
+	./$(DEPDIR)/libshadow_la-myname.Plo \
 	./$(DEPDIR)/libshadow_la-nscd.Plo \
 	./$(DEPDIR)/libshadow_la-nss.Plo \
+	./$(DEPDIR)/libshadow_la-obscure.Plo \
+	./$(DEPDIR)/libshadow_la-pam_pass.Plo \
+	./$(DEPDIR)/libshadow_la-pam_pass_non_interactive.Plo \
 	./$(DEPDIR)/libshadow_la-port.Plo \
+	./$(DEPDIR)/libshadow_la-prefix_flag.Plo \
 	./$(DEPDIR)/libshadow_la-pwauth.Plo \
+	./$(DEPDIR)/libshadow_la-pwd2spwd.Plo \
+	./$(DEPDIR)/libshadow_la-pwd_init.Plo \
+	./$(DEPDIR)/libshadow_la-pwdcheck.Plo \
 	./$(DEPDIR)/libshadow_la-pwio.Plo \
 	./$(DEPDIR)/libshadow_la-pwmem.Plo \
+	./$(DEPDIR)/libshadow_la-readpassphrase.Plo \
+	./$(DEPDIR)/libshadow_la-remove_tree.Plo \
+	./$(DEPDIR)/libshadow_la-rlogin.Plo \
+	./$(DEPDIR)/libshadow_la-root_flag.Plo \
 	./$(DEPDIR)/libshadow_la-run_part.Plo \
+	./$(DEPDIR)/libshadow_la-salt.Plo \
 	./$(DEPDIR)/libshadow_la-selinux.Plo \
 	./$(DEPDIR)/libshadow_la-semanage.Plo \
+	./$(DEPDIR)/libshadow_la-setugid.Plo \
+	./$(DEPDIR)/libshadow_la-setupenv.Plo \
 	./$(DEPDIR)/libshadow_la-sgetgrent.Plo \
 	./$(DEPDIR)/libshadow_la-sgetpwent.Plo \
 	./$(DEPDIR)/libshadow_la-sgetspent.Plo \
@@ -190,11 +329,38 @@ am__depfiles_remade = ./$(DEPDIR)/libshadow_la-commonio.Plo \
 	./$(DEPDIR)/libshadow_la-shadowio.Plo \
 	./$(DEPDIR)/libshadow_la-shadowlog.Plo \
 	./$(DEPDIR)/libshadow_la-shadowmem.Plo \
+	./$(DEPDIR)/libshadow_la-shell.Plo \
 	./$(DEPDIR)/libshadow_la-spawn.Plo \
 	./$(DEPDIR)/libshadow_la-sssd.Plo \
+	./$(DEPDIR)/libshadow_la-strtoday.Plo \
+	./$(DEPDIR)/libshadow_la-sub.Plo \
 	./$(DEPDIR)/libshadow_la-subordinateio.Plo \
+	./$(DEPDIR)/libshadow_la-sulog.Plo \
 	./$(DEPDIR)/libshadow_la-tcbfuncs.Plo \
-	./$(DEPDIR)/libshadow_la-utent.Plo
+	./$(DEPDIR)/libshadow_la-ttytype.Plo \
+	./$(DEPDIR)/libshadow_la-tz.Plo \
+	./$(DEPDIR)/libshadow_la-ulimit.Plo \
+	./$(DEPDIR)/libshadow_la-user_busy.Plo \
+	./$(DEPDIR)/libshadow_la-utmp.Plo \
+	./$(DEPDIR)/libshadow_la-valid.Plo \
+	./$(DEPDIR)/libshadow_la-write_full.Plo \
+	./$(DEPDIR)/libshadow_la-xgetgrgid.Plo \
+	./$(DEPDIR)/libshadow_la-xgetgrnam.Plo \
+	./$(DEPDIR)/libshadow_la-xgetpwnam.Plo \
+	./$(DEPDIR)/libshadow_la-xgetpwuid.Plo \
+	./$(DEPDIR)/libshadow_la-xgetspnam.Plo \
+	./$(DEPDIR)/libshadow_la-xprefix_getpwnam.Plo \
+	./$(DEPDIR)/libshadow_la-yesno.Plo \
+	atoi/$(DEPDIR)/libshadow_la-a2i.Plo \
+	atoi/$(DEPDIR)/libshadow_la-str2i.Plo \
+	atoi/$(DEPDIR)/libshadow_la-strtoi.Plo \
+	atoi/$(DEPDIR)/libshadow_la-strtou_noneg.Plo \
+	string/$(DEPDIR)/libshadow_la-sprintf.Plo \
+	string/$(DEPDIR)/libshadow_la-stpecpy.Plo \
+	string/$(DEPDIR)/libshadow_la-stpeprintf.Plo \
+	string/$(DEPDIR)/libshadow_la-strftime.Plo \
+	string/$(DEPDIR)/libshadow_la-strtcpy.Plo \
+	time/$(DEPDIR)/libshadow_la-day_to_str.Plo
 am__mv = mv -f
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
@@ -214,6 +380,17 @@ AM_V_CCLD = $(am__v_CCLD_@AM_V@)
 am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
 am__v_CCLD_0 = @echo "  CCLD    " $@;
 am__v_CCLD_1 = 
+@MAINTAINER_MODE_FALSE@am__skipyacc = test -f $@ ||
+am__yacc_c2h = sed -e s/cc$$/hh/ -e s/cpp$$/hpp/ -e s/cxx$$/hxx/ \
+		   -e s/c++$$/h++/ -e s/c$$/h/
+YACCCOMPILE = $(YACC) $(AM_YFLAGS) $(YFLAGS)
+LTYACCCOMPILE = $(LIBTOOL) $(AM_V_lt) $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=compile $(YACC) $(AM_YFLAGS) $(YFLAGS)
+AM_V_YACC = $(am__v_YACC_@AM_V@)
+am__v_YACC_ = $(am__v_YACC_@AM_DEFAULT_V@)
+am__v_YACC_0 = @echo "  YACC    " $@;
+am__v_YACC_1 = 
+YLWRAP = $(top_srcdir)/ylwrap
 SOURCES = $(libshadow_la_SOURCES)
 DIST_SOURCES = $(am__libshadow_la_SOURCES_DIST)
 am__can_run_installinfo = \
@@ -238,7 +415,8 @@ am__define_uniq_tagged_files = \
   unique=`for i in $$list; do \
     if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
   done | $(am__uniquify_input)`
-am__DIST_COMMON = $(srcdir)/Makefile.in $(top_srcdir)/depcomp
+am__DIST_COMMON = $(srcdir)/Makefile.in $(top_srcdir)/depcomp \
+	$(top_srcdir)/ylwrap getdate.c
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
@@ -251,6 +429,8 @@ AWK = @AWK@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
+CMOCKA_CFLAGS = @CMOCKA_CFLAGS@
+CMOCKA_LIBS = @CMOCKA_LIBS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CSCOPE = @CSCOPE@
@@ -269,6 +449,7 @@ EGREP = @EGREP@
 ETAGS = @ETAGS@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FILECMD = @FILECMD@
 GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
 GMSGFMT = @GMSGFMT@
 GMSGFMT_015 = @GMSGFMT_015@
@@ -284,9 +465,15 @@ INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
 LD = @LD@
 LDFLAGS = @LDFLAGS@
 LIBACL = @LIBACL@
+LIBADD_DL = @LIBADD_DL@
+LIBADD_DLD_LINK = @LIBADD_DLD_LINK@
+LIBADD_DLOPEN = @LIBADD_DLOPEN@
+LIBADD_SHL_LOAD = @LIBADD_SHL_LOAD@
 LIBATTR = @LIBATTR@
 LIBAUDIT = @LIBAUDIT@
-LIBCRACK = @LIBCRACK@
+LIBBSD = @LIBBSD@
+LIBBSD_CFLAGS = @LIBBSD_CFLAGS@
+LIBBSD_LIBS = @LIBBSD_LIBS@
 LIBCRYPT = @LIBCRYPT@
 LIBECONF = @LIBECONF@
 LIBICONV = @LIBICONV@
@@ -302,6 +489,7 @@ LIBSUBID_ABI = @LIBSUBID_ABI@
 LIBSUBID_ABI_MAJOR = @LIBSUBID_ABI_MAJOR@
 LIBSUBID_ABI_MICRO = @LIBSUBID_ABI_MICRO@
 LIBSUBID_ABI_MINOR = @LIBSUBID_ABI_MINOR@
+LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
@@ -310,6 +498,8 @@ LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
 LTLIBOBJS = @LTLIBOBJS@
+LT_DLLOADERS = @LT_DLLOADERS@
+LT_DLPREOPEN = @LT_DLPREOPEN@
 LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
 MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
@@ -332,6 +522,9 @@ PACKAGE_TARNAME = @PACKAGE_TARNAME@
 PACKAGE_URL = @PACKAGE_URL@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
 POSUB = @POSUB@
 RANLIB = @RANLIB@
 SED = @SED@
@@ -405,18 +598,46 @@ top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 AUTOMAKE_OPTIONS = 1.0 foreign
 noinst_LTLIBRARIES = libshadow.la
+@USE_PAM_FALSE@LIBCRYPT_PAM = 
+@USE_PAM_TRUE@LIBCRYPT_PAM = $(LIBCRYPT)
+AM_CPPFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir) $(ECONF_CPPFLAGS)
 libshadow_la_CPPFLAGS = $(ECONF_CPPFLAGS) $(am__append_1) \
 	-I$(top_srcdir)
-libshadow_la_SOURCES = commonio.c commonio.h defines.h encrypt.c \
-	exitcodes.h faillog.h fields.c fputsx.c getdef.c getdef.h \
-	get_gid.c getlong.c get_pid.c get_uid.c getulong.c groupio.c \
-	groupmem.c groupio.h gshadow.c lockpw.c nss.c nscd.c nscd.h \
-	shadowlog.c shadowlog.h shadowlog_internal.h sssd.c sssd.h \
-	pam_defs.h port.c port.h prototypes.h pwauth.c pwauth.h pwio.c \
-	pwio.h pwmem.c run_part.h run_part.c subordinateio.h \
-	subordinateio.c selinux.c semanage.c sgetgrent.c sgetpwent.c \
-	sgetspent.c sgroupio.c sgroupio.h shadow.c shadowio.c \
-	shadowio.h shadowmem.c spawn.c utent.c $(am__append_2)
+libshadow_la_CFLAGS = $(LIBBSD_CFLAGS) $(LIBCRYPT_PAM) $(LIBSYSTEMD)
+libshadow_la_LIBADD = $(LIBADD_DLOPEN)
+libshadow_la_SOURCES = addgrps.c adds.c adds.h age.c agetpass.c \
+	agetpass.h alloc.c alloc.h atoi/a2i.c atoi/a2i.h atoi/str2i.c \
+	atoi/str2i.h atoi/strtoi.c atoi/strtoi.h atoi/strtou_noneg.c \
+	atoi/strtou_noneg.h attr.h audit_help.c basename.c bit.c bit.h \
+	cast.h chkname.c chkname.h chowndir.c chowntty.c cleanup.c \
+	cleanup_group.c cleanup_user.c commonio.c commonio.h console.c \
+	copydir.c csrand.c defines.h encrypt.c env.c exitcodes.h \
+	faillog.h failure.c failure.h fd.c fields.c find_new_gid.c \
+	find_new_uid.c find_new_sub_gids.c find_new_sub_uids.c \
+	fputsx.c get_gid.c get_pid.c get_uid.c getdate.h getdate.y \
+	getdef.c getdef.h getgr_nam_gid.c getrange.c gettime.c \
+	groupio.c groupmem.c groupio.h gshadow.c hushed.c idmapping.h \
+	idmapping.c isexpired.c limits.c list.c lockpw.c loginprompt.c \
+	mail.c memzero.c memzero.h motd.c must_be.h myname.c nss.c \
+	nscd.c nscd.h obscure.c pam_defs.h pam_pass.c \
+	pam_pass_non_interactive.c port.c port.h prefix_flag.c \
+	prototypes.h pwauth.c pwauth.h pwio.c pwio.h pwd_init.c \
+	pwd2spwd.c pwdcheck.c pwmem.c remove_tree.c rlogin.c \
+	root_flag.c run_part.h run_part.c salt.c selinux.c semanage.c \
+	setugid.c setupenv.c sgetgrent.c sgetpwent.c sgetspent.c \
+	sgroupio.c sgroupio.h shadow.c shadowio.c shadowio.h \
+	shadowlog.c shadowlog.h shadowlog_internal.h shadowmem.c \
+	shell.c sizeof.h spawn.c sssd.c sssd.h string/sprintf.c \
+	string/sprintf.h string/stpecpy.c string/stpecpy.h \
+	string/stpeprintf.c string/stpeprintf.h string/strftime.c \
+	string/strftime.h string/strncpy.h string/strtcpy.c \
+	string/strtcpy.h string/zustr2stp.h strtoday.c sub.c \
+	subordinateio.h subordinateio.c sulog.c time/day_to_str.c \
+	time/day_to_str.h ttytype.c tz.c ulimit.c user_busy.c valid.c \
+	write_full.c xgetpwnam.c xprefix_getpwnam.c xgetpwuid.c \
+	xgetgrnam.c xgetgrgid.c xgetspnam.c yesno.c $(am__append_2) \
+	$(am__append_3) $(am__append_4) $(am__append_5) \
+	$(am__append_6) $(am__append_7)
 
 # These files are unneeded for some reason, listed in
 # order of appearance:
@@ -424,12 +645,13 @@ libshadow_la_SOURCES = commonio.c commonio.h defines.h encrypt.c \
 # sources for dbm support (not yet used)
 EXTRA_DIST = \
 	.indent.pro \
-	gshadow_.h
+	gshadow_.h \
+	xgetXXbyYY.c
 
 all: all-am
 
 .SUFFIXES:
-.SUFFIXES: .c .lo .o .obj
+.SUFFIXES: .c .lo .o .obj .y
 $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
 	@for dep in $?; do \
 	  case '$(am__configure_deps)' in \
@@ -470,39 +692,137 @@ clean-noinstLTLIBRARIES:
 	  echo rm -f $${locs}; \
 	  rm -f $${locs}; \
 	}
+atoi/$(am__dirstamp):
+	@$(MKDIR_P) atoi
+	@: > atoi/$(am__dirstamp)
+atoi/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) atoi/$(DEPDIR)
+	@: > atoi/$(DEPDIR)/$(am__dirstamp)
+atoi/libshadow_la-a2i.lo: atoi/$(am__dirstamp) \
+	atoi/$(DEPDIR)/$(am__dirstamp)
+atoi/libshadow_la-str2i.lo: atoi/$(am__dirstamp) \
+	atoi/$(DEPDIR)/$(am__dirstamp)
+atoi/libshadow_la-strtoi.lo: atoi/$(am__dirstamp) \
+	atoi/$(DEPDIR)/$(am__dirstamp)
+atoi/libshadow_la-strtou_noneg.lo: atoi/$(am__dirstamp) \
+	atoi/$(DEPDIR)/$(am__dirstamp)
+string/$(am__dirstamp):
+	@$(MKDIR_P) string
+	@: > string/$(am__dirstamp)
+string/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) string/$(DEPDIR)
+	@: > string/$(DEPDIR)/$(am__dirstamp)
+string/libshadow_la-sprintf.lo: string/$(am__dirstamp) \
+	string/$(DEPDIR)/$(am__dirstamp)
+string/libshadow_la-stpecpy.lo: string/$(am__dirstamp) \
+	string/$(DEPDIR)/$(am__dirstamp)
+string/libshadow_la-stpeprintf.lo: string/$(am__dirstamp) \
+	string/$(DEPDIR)/$(am__dirstamp)
+string/libshadow_la-strftime.lo: string/$(am__dirstamp) \
+	string/$(DEPDIR)/$(am__dirstamp)
+string/libshadow_la-strtcpy.lo: string/$(am__dirstamp) \
+	string/$(DEPDIR)/$(am__dirstamp)
+time/$(am__dirstamp):
+	@$(MKDIR_P) time
+	@: > time/$(am__dirstamp)
+time/$(DEPDIR)/$(am__dirstamp):
+	@$(MKDIR_P) time/$(DEPDIR)
+	@: > time/$(DEPDIR)/$(am__dirstamp)
+time/libshadow_la-day_to_str.lo: time/$(am__dirstamp) \
+	time/$(DEPDIR)/$(am__dirstamp)
 
 libshadow.la: $(libshadow_la_OBJECTS) $(libshadow_la_DEPENDENCIES) $(EXTRA_libshadow_la_DEPENDENCIES) 
-	$(AM_V_CCLD)$(LINK)  $(libshadow_la_OBJECTS) $(libshadow_la_LIBADD) $(LIBS)
+	$(AM_V_CCLD)$(libshadow_la_LINK)  $(libshadow_la_OBJECTS) $(libshadow_la_LIBADD) $(LIBS)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
+	-rm -f atoi/*.$(OBJEXT)
+	-rm -f atoi/*.lo
+	-rm -f string/*.$(OBJEXT)
+	-rm -f string/*.lo
+	-rm -f time/*.$(OBJEXT)
+	-rm -f time/*.lo
 
 distclean-compile:
 	-rm -f *.tab.c
 
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-addgrps.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-adds.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-age.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-agetpass.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-alloc.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-audit_help.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-basename.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-bit.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-btrfs.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-chkname.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-chowndir.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-chowntty.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-cleanup.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-cleanup_group.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-cleanup_user.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-commonio.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-console.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-copydir.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-csrand.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-encrypt.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-env.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-failure.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-fd.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-fields.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-find_new_gid.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-find_new_sub_gids.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-find_new_sub_uids.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-find_new_uid.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-fputsx.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-freezero.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-get_gid.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-get_pid.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-get_uid.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-getdate.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-getdef.Plo@am__quote@ # am--include-marker
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-getlong.Plo@am__quote@ # am--include-marker
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-getulong.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-getgr_nam_gid.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-getrange.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-gettime.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-groupio.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-groupmem.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-gshadow.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-hushed.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-idmapping.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-isexpired.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-limits.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-list.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-lockpw.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-log.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-logind.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-loginprompt.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-mail.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-memzero.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-motd.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-myname.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-nscd.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-nss.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-obscure.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-pam_pass.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-pam_pass_non_interactive.Plo@am__quote@ # am--include-marker
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-port.Plo@am__quote@ # am--include-marker
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libshadow_la-prefix_flag.Plo@am__quote@ # am--include-marker
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 libshadow_la-get_uid.lo: get_uid.c
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 libshadow_la-nss.lo: nss.c
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 libshadow_la-nscd.lo: nscd.c
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+libshadow_la-obscure.lo: obscure.c
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+libshadow_la-pam_pass.lo: pam_pass.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pam_pass.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pam_pass.Tpo -c -o libshadow_la-pam_pass.lo `test -f 'pam_pass.c' || echo '$(srcdir)/'`pam_pass.c
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+libshadow_la-pam_pass_non_interactive.lo: pam_pass_non_interactive.c
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+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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 libshadow_la-port.lo: port.c
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+libshadow_la-prefix_flag.lo: prefix_flag.c
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+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-prefix_flag.Tpo $(DEPDIR)/libshadow_la-prefix_flag.Plo
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 libshadow_la-pwauth.lo: pwauth.c
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+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pwauth.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwauth.Tpo -c -o libshadow_la-pwauth.lo `test -f 'pwauth.c' || echo '$(srcdir)/'`pwauth.c
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-pwauth.Tpo $(DEPDIR)/libshadow_la-pwauth.Plo
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwauth.lo `test -f 'pwauth.c' || echo '$(srcdir)/'`pwauth.c
 
 libshadow_la-pwio.lo: pwio.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libshadow_la-pwio.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwio.Tpo -c -o libshadow_la-pwio.lo `test -f 'pwio.c' || echo '$(srcdir)/'`pwio.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pwio.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwio.Tpo -c -o libshadow_la-pwio.lo `test -f 'pwio.c' || echo '$(srcdir)/'`pwio.c
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-pwio.Tpo $(DEPDIR)/libshadow_la-pwio.Plo
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 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwio.lo `test -f 'pwio.c' || echo '$(srcdir)/'`pwio.c
+
+libshadow_la-pwd_init.lo: pwd_init.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pwd_init.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwd_init.Tpo -c -o libshadow_la-pwd_init.lo `test -f 'pwd_init.c' || echo '$(srcdir)/'`pwd_init.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-pwd_init.Tpo $(DEPDIR)/libshadow_la-pwd_init.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='pwd_init.c' object='libshadow_la-pwd_init.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwd_init.lo `test -f 'pwd_init.c' || echo '$(srcdir)/'`pwd_init.c
+
+libshadow_la-pwd2spwd.lo: pwd2spwd.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pwd2spwd.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwd2spwd.Tpo -c -o libshadow_la-pwd2spwd.lo `test -f 'pwd2spwd.c' || echo '$(srcdir)/'`pwd2spwd.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-pwd2spwd.Tpo $(DEPDIR)/libshadow_la-pwd2spwd.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='pwd2spwd.c' object='libshadow_la-pwd2spwd.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwd2spwd.lo `test -f 'pwd2spwd.c' || echo '$(srcdir)/'`pwd2spwd.c
+
+libshadow_la-pwdcheck.lo: pwdcheck.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pwdcheck.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwdcheck.Tpo -c -o libshadow_la-pwdcheck.lo `test -f 'pwdcheck.c' || echo '$(srcdir)/'`pwdcheck.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-pwdcheck.Tpo $(DEPDIR)/libshadow_la-pwdcheck.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='pwdcheck.c' object='libshadow_la-pwdcheck.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwdcheck.lo `test -f 'pwdcheck.c' || echo '$(srcdir)/'`pwdcheck.c
 
 libshadow_la-pwmem.lo: pwmem.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libshadow_la-pwmem.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwmem.Tpo -c -o libshadow_la-pwmem.lo `test -f 'pwmem.c' || echo '$(srcdir)/'`pwmem.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-pwmem.lo -MD -MP -MF $(DEPDIR)/libshadow_la-pwmem.Tpo -c -o libshadow_la-pwmem.lo `test -f 'pwmem.c' || echo '$(srcdir)/'`pwmem.c
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-pwmem.Tpo $(DEPDIR)/libshadow_la-pwmem.Plo
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-@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwmem.lo `test -f 'pwmem.c' || echo '$(srcdir)/'`pwmem.c
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-pwmem.lo `test -f 'pwmem.c' || echo '$(srcdir)/'`pwmem.c
+
+libshadow_la-remove_tree.lo: remove_tree.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-remove_tree.lo -MD -MP -MF $(DEPDIR)/libshadow_la-remove_tree.Tpo -c -o libshadow_la-remove_tree.lo `test -f 'remove_tree.c' || echo '$(srcdir)/'`remove_tree.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-remove_tree.Tpo $(DEPDIR)/libshadow_la-remove_tree.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='remove_tree.c' object='libshadow_la-remove_tree.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-remove_tree.lo `test -f 'remove_tree.c' || echo '$(srcdir)/'`remove_tree.c
+
+libshadow_la-rlogin.lo: rlogin.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-rlogin.lo -MD -MP -MF $(DEPDIR)/libshadow_la-rlogin.Tpo -c -o libshadow_la-rlogin.lo `test -f 'rlogin.c' || echo '$(srcdir)/'`rlogin.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-rlogin.Tpo $(DEPDIR)/libshadow_la-rlogin.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='rlogin.c' object='libshadow_la-rlogin.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-rlogin.lo `test -f 'rlogin.c' || echo '$(srcdir)/'`rlogin.c
+
+libshadow_la-root_flag.lo: root_flag.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-root_flag.lo -MD -MP -MF $(DEPDIR)/libshadow_la-root_flag.Tpo -c -o libshadow_la-root_flag.lo `test -f 'root_flag.c' || echo '$(srcdir)/'`root_flag.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-root_flag.Tpo $(DEPDIR)/libshadow_la-root_flag.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='root_flag.c' object='libshadow_la-root_flag.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-root_flag.lo `test -f 'root_flag.c' || echo '$(srcdir)/'`root_flag.c
 
 libshadow_la-run_part.lo: run_part.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libshadow_la-run_part.lo -MD -MP -MF $(DEPDIR)/libshadow_la-run_part.Tpo -c -o libshadow_la-run_part.lo `test -f 'run_part.c' || echo '$(srcdir)/'`run_part.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-run_part.lo -MD -MP -MF $(DEPDIR)/libshadow_la-run_part.Tpo -c -o libshadow_la-run_part.lo `test -f 'run_part.c' || echo '$(srcdir)/'`run_part.c
 @am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-run_part.Tpo $(DEPDIR)/libshadow_la-run_part.Plo
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-run_part.lo `test -f 'run_part.c' || echo '$(srcdir)/'`run_part.c
 
-libshadow_la-subordinateio.lo: subordinateio.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libshadow_la-subordinateio.lo -MD -MP -MF $(DEPDIR)/libshadow_la-subordinateio.Tpo -c -o libshadow_la-subordinateio.lo `test -f 'subordinateio.c' || echo '$(srcdir)/'`subordinateio.c
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-subordinateio.Tpo $(DEPDIR)/libshadow_la-subordinateio.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='subordinateio.c' object='libshadow_la-subordinateio.lo' libtool=yes @AMDEPBACKSLASH@
+libshadow_la-salt.lo: salt.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-salt.lo -MD -MP -MF $(DEPDIR)/libshadow_la-salt.Tpo -c -o libshadow_la-salt.lo `test -f 'salt.c' || echo '$(srcdir)/'`salt.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-salt.Tpo $(DEPDIR)/libshadow_la-salt.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='salt.c' object='libshadow_la-salt.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-salt.lo `test -f 'salt.c' || echo '$(srcdir)/'`salt.c
 
 libshadow_la-selinux.lo: selinux.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libshadow_la-selinux.lo -MD -MP -MF $(DEPDIR)/libshadow_la-selinux.Tpo -c -o libshadow_la-selinux.lo `test -f 'selinux.c' || echo '$(srcdir)/'`selinux.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-selinux.lo -MD -MP -MF $(DEPDIR)/libshadow_la-selinux.Tpo -c -o libshadow_la-selinux.lo `test -f 'selinux.c' || echo '$(srcdir)/'`selinux.c
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+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-selinux.lo `test -f 'selinux.c' || echo '$(srcdir)/'`selinux.c
 
 libshadow_la-semanage.lo: semanage.c
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libshadow_la-semanage.lo -MD -MP -MF $(DEPDIR)/libshadow_la-semanage.Tpo -c -o libshadow_la-semanage.lo `test -f 'semanage.c' || echo '$(srcdir)/'`semanage.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-semanage.lo -MD -MP -MF $(DEPDIR)/libshadow_la-semanage.Tpo -c -o libshadow_la-semanage.lo `test -f 'semanage.c' || echo '$(srcdir)/'`semanage.c
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+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='freezero.c' object='libshadow_la-freezero.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-freezero.lo `test -f 'freezero.c' || echo '$(srcdir)/'`freezero.c
+
+libshadow_la-readpassphrase.lo: readpassphrase.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -MT libshadow_la-readpassphrase.lo -MD -MP -MF $(DEPDIR)/libshadow_la-readpassphrase.Tpo -c -o libshadow_la-readpassphrase.lo `test -f 'readpassphrase.c' || echo '$(srcdir)/'`readpassphrase.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libshadow_la-readpassphrase.Tpo $(DEPDIR)/libshadow_la-readpassphrase.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='readpassphrase.c' object='libshadow_la-readpassphrase.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libshadow_la_CPPFLAGS) $(CPPFLAGS) $(libshadow_la_CFLAGS) $(CFLAGS) -c -o libshadow_la-readpassphrase.lo `test -f 'readpassphrase.c' || echo '$(srcdir)/'`readpassphrase.c
+
+.y.c:
+	$(AM_V_YACC)$(am__skipyacc) $(SHELL) $(YLWRAP) $< y.tab.c $@ y.tab.h `echo $@ | $(am__yacc_c2h)` y.output $*.output -- $(YACCCOMPILE)
 
 mostlyclean-libtool:
 	-rm -f *.lo
 
 clean-libtool:
 	-rm -rf .libs _libs
+	-rm -rf atoi/.libs atoi/_libs
+	-rm -rf string/.libs string/_libs
+	-rm -rf time/.libs time/_libs
 
 ID: $(am__tagged_files)
 	$(am__define_uniq_tagged_files); mkid -fID $$unique
@@ -916,39 +1839,100 @@ clean-generic:
 distclean-generic:
 	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
 	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+	-rm -f atoi/$(DEPDIR)/$(am__dirstamp)
+	-rm -f atoi/$(am__dirstamp)
+	-rm -f string/$(DEPDIR)/$(am__dirstamp)
+	-rm -f string/$(am__dirstamp)
+	-rm -f time/$(DEPDIR)/$(am__dirstamp)
+	-rm -f time/$(am__dirstamp)
 
 maintainer-clean-generic:
 	@echo "This command is intended for maintainers to use"
 	@echo "it deletes files that may require special tools to rebuild."
+	-rm -f getdate.c
 clean: clean-am
 
 clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
 	mostlyclean-am
 
 distclean: distclean-am
-		-rm -f ./$(DEPDIR)/libshadow_la-commonio.Plo
+		-rm -f ./$(DEPDIR)/libshadow_la-addgrps.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-adds.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-age.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-agetpass.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-alloc.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-audit_help.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-basename.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-bit.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-btrfs.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-chkname.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-chowndir.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-chowntty.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-cleanup.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-cleanup_group.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-cleanup_user.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-commonio.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-console.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-copydir.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-csrand.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-encrypt.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-env.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-failure.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-fd.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-fields.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_gid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_sub_gids.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_sub_uids.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_uid.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-fputsx.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-freezero.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-get_gid.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-get_pid.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-get_uid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-getdate.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-getdef.Plo
-	-rm -f ./$(DEPDIR)/libshadow_la-getlong.Plo
-	-rm -f ./$(DEPDIR)/libshadow_la-getulong.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-getgr_nam_gid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-getrange.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-gettime.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-groupio.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-groupmem.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-gshadow.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-hushed.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-idmapping.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-isexpired.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-limits.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-list.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-lockpw.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-log.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-logind.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-loginprompt.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-mail.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-memzero.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-motd.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-myname.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-nscd.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-nss.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-obscure.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pam_pass.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pam_pass_non_interactive.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-port.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-prefix_flag.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-pwauth.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pwd2spwd.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pwd_init.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pwdcheck.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-pwio.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-pwmem.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-readpassphrase.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-remove_tree.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-rlogin.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-root_flag.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-run_part.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-salt.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-selinux.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-semanage.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-setugid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-setupenv.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sgetgrent.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sgetpwent.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sgetspent.Plo
@@ -957,11 +1941,38 @@ distclean: distclean-am
 	-rm -f ./$(DEPDIR)/libshadow_la-shadowio.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-shadowlog.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-shadowmem.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-shell.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-spawn.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sssd.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-strtoday.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-sub.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-subordinateio.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-sulog.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-tcbfuncs.Plo
-	-rm -f ./$(DEPDIR)/libshadow_la-utent.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-ttytype.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-tz.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-ulimit.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-user_busy.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-utmp.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-valid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-write_full.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetgrgid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetgrnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetpwnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetpwuid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetspnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xprefix_getpwnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-yesno.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-a2i.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-str2i.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-strtoi.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-strtou_noneg.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-sprintf.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-stpecpy.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-stpeprintf.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-strftime.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-strtcpy.Plo
+	-rm -f time/$(DEPDIR)/libshadow_la-day_to_str.Plo
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-tags
@@ -1007,29 +2018,83 @@ install-ps-am:
 installcheck-am:
 
 maintainer-clean: maintainer-clean-am
-		-rm -f ./$(DEPDIR)/libshadow_la-commonio.Plo
+		-rm -f ./$(DEPDIR)/libshadow_la-addgrps.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-adds.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-age.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-agetpass.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-alloc.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-audit_help.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-basename.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-bit.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-btrfs.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-chkname.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-chowndir.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-chowntty.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-cleanup.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-cleanup_group.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-cleanup_user.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-commonio.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-console.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-copydir.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-csrand.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-encrypt.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-env.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-failure.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-fd.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-fields.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_gid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_sub_gids.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_sub_uids.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-find_new_uid.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-fputsx.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-freezero.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-get_gid.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-get_pid.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-get_uid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-getdate.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-getdef.Plo
-	-rm -f ./$(DEPDIR)/libshadow_la-getlong.Plo
-	-rm -f ./$(DEPDIR)/libshadow_la-getulong.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-getgr_nam_gid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-getrange.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-gettime.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-groupio.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-groupmem.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-gshadow.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-hushed.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-idmapping.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-isexpired.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-limits.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-list.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-lockpw.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-log.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-logind.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-loginprompt.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-mail.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-memzero.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-motd.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-myname.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-nscd.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-nss.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-obscure.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pam_pass.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pam_pass_non_interactive.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-port.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-prefix_flag.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-pwauth.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pwd2spwd.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pwd_init.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-pwdcheck.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-pwio.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-pwmem.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-readpassphrase.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-remove_tree.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-rlogin.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-root_flag.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-run_part.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-salt.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-selinux.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-semanage.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-setugid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-setupenv.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sgetgrent.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sgetpwent.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sgetspent.Plo
@@ -1038,11 +2103,38 @@ maintainer-clean: maintainer-clean-am
 	-rm -f ./$(DEPDIR)/libshadow_la-shadowio.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-shadowlog.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-shadowmem.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-shell.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-spawn.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-sssd.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-strtoday.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-sub.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-subordinateio.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-sulog.Plo
 	-rm -f ./$(DEPDIR)/libshadow_la-tcbfuncs.Plo
-	-rm -f ./$(DEPDIR)/libshadow_la-utent.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-ttytype.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-tz.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-ulimit.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-user_busy.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-utmp.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-valid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-write_full.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetgrgid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetgrnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetpwnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetpwuid.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xgetspnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-xprefix_getpwnam.Plo
+	-rm -f ./$(DEPDIR)/libshadow_la-yesno.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-a2i.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-str2i.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-strtoi.Plo
+	-rm -f atoi/$(DEPDIR)/libshadow_la-strtou_noneg.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-sprintf.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-stpecpy.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-stpeprintf.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-strftime.Plo
+	-rm -f string/$(DEPDIR)/libshadow_la-strtcpy.Plo
+	-rm -f time/$(DEPDIR)/libshadow_la-day_to_str.Plo
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
diff --git a/libmisc/addgrps.c b/lib/addgrps.c
index 845d383..dae3dba 100644
--- a/libmisc/addgrps.c
+++ b/lib/addgrps.c
@@ -17,6 +17,8 @@
 #include <stdio.h>
 #include <grp.h>
 #include <errno.h>
+
+#include "alloc.h"
 #include "shadowlog.h"
 
 #ident "$Id$"
@@ -29,7 +31,7 @@
  */
 int add_groups (const char *list)
 {
-	GETGROUPS_T *grouplist, *tmp;
+	GETGROUPS_T *grouplist;
 	size_t i;
 	int ngroups;
 	bool added;
@@ -46,7 +48,7 @@ int add_groups (const char *list)
 
 	i = 16;
 	for (;;) {
-		grouplist = (gid_t *) malloc (i * sizeof (GETGROUPS_T));
+		grouplist = MALLOC(i, GETGROUPS_T);
 		if (NULL == grouplist) {
 			return -1;
 		}
@@ -88,19 +90,17 @@ int add_groups (const char *list)
 			fputs (_("Warning: too many groups\n"), shadow_logfd);
 			break;
 		}
-		tmp = (gid_t *) realloc (grouplist, (size_t)(ngroups + 1) * sizeof (GETGROUPS_T));
-		if (NULL == tmp) {
-			free (grouplist);
+		grouplist = REALLOCF(grouplist, (size_t) ngroups + 1, GETGROUPS_T);
+		if (grouplist == NULL) {
 			return -1;
 		}
-		tmp[ngroups] = grp->gr_gid;
+		grouplist[ngroups] = grp->gr_gid;
 		ngroups++;
-		grouplist = tmp;
 		added = true;
 	}
 
 	if (added) {
-		ret = setgroups ((size_t)ngroups, grouplist);
+		ret = setgroups (ngroups, grouplist);
 		free (grouplist);
 		return ret;
 	}
@@ -109,6 +109,6 @@ int add_groups (const char *list)
 	return 0;
 }
 #else				/* HAVE_SETGROUPS && !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* HAVE_SETGROUPS && !USE_PAM */
 
diff --git a/lib/adds.c b/lib/adds.c
new file mode 100644
index 0000000..5d8c153
--- /dev/null
+++ b/lib/adds.c
@@ -0,0 +1,15 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "adds.h"
+
+#include <stddef.h>
+
+
+extern inline long addsl2(long a, long b);
+extern inline long addslN(size_t n, long addend[n]);
+
+extern inline int cmpl(const void *p1, const void *p2);
diff --git a/lib/adds.h b/lib/adds.h
new file mode 100644
index 0000000..6544ce5
--- /dev/null
+++ b/lib/adds.h
@@ -0,0 +1,86 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ADDS_H_
+#define SHADOW_INCLUDE_LIB_ADDS_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "sizeof.h"
+
+
+#define addsl(a, b, ...)                                                      \
+({                                                                            \
+	long  addend_[] = {a, b, __VA_ARGS__};                                \
+                                                                              \
+	addslN(NITEMS(addend_), addend_);                                     \
+})
+
+
+inline long addsl2(long a, long b);
+inline long addslN(size_t n, long addend[n]);
+
+inline int cmpl(const void *p1, const void *p2);
+
+
+inline long
+addsl2(long a, long b)
+{
+	if (a > 0 && b > LONG_MAX - a) {
+		errno = EOVERFLOW;
+		return LONG_MAX;
+	}
+	if (a < 0 && b < LONG_MIN - a) {
+		errno = EOVERFLOW;
+		return LONG_MIN;
+	}
+	return a + b;
+}
+
+
+inline long
+addslN(size_t n, long addend[n])
+{
+	int   e;
+
+	if (n == 0) {
+		errno = EDOM;
+		return 0;
+	}
+
+	e = errno;
+	while (n > 1) {
+		qsort(addend, n, sizeof(addend[0]), cmpl);
+
+		errno = 0;
+		addend[0] = addsl2(addend[0], addend[--n]);
+		if (errno == EOVERFLOW)
+			return addend[0];
+	}
+	errno = e;
+	return addend[0];
+}
+
+
+inline int
+cmpl(const void *p1, const void *p2)
+{
+	const long  *l1 = p1;
+	const long  *l2 = p2;
+
+	if (*l1 < *l2)
+		return -1;
+	if (*l1 > *l2)
+		return +1;
+	return 0;
+}
+
+
+#endif  // include guard
diff --git a/libmisc/age.c b/lib/age.c
index d10f71b..72a13ea 100644
--- a/libmisc/age.c
+++ b/lib/age.c
@@ -13,12 +13,15 @@
 #include <stdio.h>
 #include <time.h>
 #include <errno.h>
-#include "prototypes.h"
-#include "defines.h"
-#include "exitcodes.h"
 #include <pwd.h>
 #include <grp.h>
 
+#include "adds.h"
+#include "defines.h"
+#include "exitcodes.h"
+#include "prototypes.h"
+
+
 #ident "$Id$"
 
 #ifndef PASSWD_PROGRAM
@@ -112,7 +115,7 @@ int expire (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 			_exit (126);
 		}
 
-		(void) execl (PASSWD_PROGRAM, PASSWD_PROGRAM, pw->pw_name, (char *) 0);
+		(void) execl (PASSWD_PROGRAM, PASSWD_PROGRAM, pw->pw_name, (char *) NULL);
 		err = errno;
 		perror ("Can't execute " PASSWD_PROGRAM);
 		_exit ((ENOENT == err) ? E_CMD_NOTFOUND : E_CMD_NOEXEC);
@@ -139,7 +142,7 @@ int expire (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 
 void agecheck (/*@null@*/const struct spwd *sp)
 {
-	long now = (long) time ((time_t *) 0) / SCALE;
+	long now = time(NULL) / DAY;
 	long remain;
 
 	if (NULL == sp) {
@@ -162,9 +165,9 @@ void agecheck (/*@null@*/const struct spwd *sp)
 		return;
 	}
 
-	remain = sp->sp_lstchg + sp->sp_max - now;
+	remain = addsl(sp->sp_lstchg, sp->sp_max, -now);
+
 	if (remain <= sp->sp_warn) {
-		remain /= DAY / SCALE;
 		if (remain > 1) {
 			(void) printf (_("Your password will expire in %ld days.\n"),
 			               remain);
diff --git a/lib/agetpass.c b/lib/agetpass.c
new file mode 100644
index 0000000..5d9f928
--- /dev/null
+++ b/lib/agetpass.c
@@ -0,0 +1,145 @@
+/*
+ * SPDX-FileCopyrightText:  2022, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#include "agetpass.h"
+
+#include <limits.h>
+#include <readpassphrase.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ident "$Id$"
+
+#include "alloc.h"
+
+#if WITH_LIBBSD == 0
+#include "freezero.h"
+#endif /* WITH_LIBBSD */
+
+
+/*
+ * SYNOPSIS
+ *	[[gnu::malloc(erase_pass)]]
+ *	char *agetpass(const char *prompt);
+ *	char *agetpass_stdin();
+ *
+ *	void erase_pass(char *pass);
+ *
+ * ARGUMENTS
+ *   agetpass()
+ *	prompt	String to be printed before reading a password.
+ *
+ *   erase_pass()
+ *	pass	password previously returned by agetpass().
+ *
+ * DESCRIPTION
+ *   agetpass()
+ *	This function is very similar to getpass(3).  It has several
+ *	advantages compared to getpass(3):
+ *
+ *	- Instead of using a static buffer, agetpass() allocates memory
+ *	  through malloc(3).  This makes the function thread-safe, and
+ *	  also reduces the visibility of the buffer.
+ *
+ *	- agetpass() doesn't reallocate internally.  Some
+ *	  implementations of getpass(3), such as glibc, do that, as a
+ *	  consequence of calling getline(3).  That's a bug in glibc,
+ *	  which allows leaking prefixes of passwords in freed memory.
+ *
+ *	- agetpass() doesn't overrun the output buffer.  If the input
+ *	  password is too long, it simply fails.  Some implementations
+ *	  of getpass(3), share the same bug that gets(3) has.
+ *
+ *	As soon as possible, the password obtained from agetpass() be
+ *	erased by calling erase_pass(), to avoid possibly leaking the
+ *	password.
+ *
+ *   agetpass_stdin()
+ *	This function is the same as previous one (agetpass). Just the
+ *	password is read from stdin and terminal is not required.
+ *
+ *   erase_pass()
+ *	This function first clears the password, by calling
+ *	explicit_bzero(3) (or an equivalent call), and then frees the
+ *	allocated memory by calling free(3).
+ *
+ *	NULL is a valid input pointer, and in such a case, this call is
+ *	a no-op.
+ *
+ * RETURN VALUE
+ *	agetpass() returns a newly allocated buffer containing the
+ *	password on success.  On error, errno is set to indicate the
+ *	error, and NULL is returned.
+ *
+ * ERRORS
+ *   agetpass()
+ *	This function may fail for any errors that malloc(3) or
+ *	readpassphrase(3) may fail, and in addition it may fail for the
+ *	following errors:
+ *
+ *	ENOBUFS
+ *		The input password was longer than PASS_MAX.
+ *
+ * CAVEATS
+ *	If a password is passed twice to erase_pass(), the behavior is
+ *	undefined.
+ */
+
+
+static char *
+agetpass_internal(const char *prompt, int flags)
+{
+	char    *pass;
+	size_t  len;
+
+	/*
+	 * Since we want to support passwords upto PASS_MAX, we need
+	 * PASS_MAX bytes for the password itself, and one more byte for
+	 * the terminating '\0'.  We also want to detect truncation, and
+	 * readpassphrase(3) doesn't detect it, so we need some trick.
+	 * Let's add one more byte, and if the password uses it, it
+	 * means the introduced password was longer than PASS_MAX.
+	 */
+	pass = MALLOC(PASS_MAX + 2, char);
+	if (pass == NULL)
+		return NULL;
+
+	if (readpassphrase(prompt, pass, PASS_MAX + 2, flags) == NULL)
+		goto fail;
+
+	len = strlen(pass);
+	if (len == PASS_MAX + 1) {
+		errno = ENOBUFS;
+		goto fail;
+	}
+
+	return pass;
+
+fail:
+	freezero(pass, PASS_MAX + 2);
+	return NULL;
+}
+
+char *
+agetpass(const char *prompt)
+{
+	return agetpass_internal(prompt, RPP_REQUIRE_TTY);
+}
+
+char *
+agetpass_stdin()
+{
+	return agetpass_internal(NULL, RPP_STDIN);
+}
+
+void
+erase_pass(char *pass)
+{
+	freezero(pass, PASS_MAX + 2);
+}
diff --git a/lib/agetpass.h b/lib/agetpass.h
new file mode 100644
index 0000000..4a4444e
--- /dev/null
+++ b/lib/agetpass.h
@@ -0,0 +1,23 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_AGETPASS_H_
+#define SHADOW_INCLUDE_LIB_AGETPASS_H_
+
+
+#include <config.h>
+
+#include "attr.h"
+#include "defines.h"
+
+
+void erase_pass(char *pass);
+ATTR_MALLOC(erase_pass)
+char *agetpass(const char *prompt);
+char *agetpass_stdin();
+
+
+#endif  // include guard
diff --git a/libmisc/xmalloc.c b/lib/alloc.c
index 056d472..962f45a 100644
--- a/libmisc/xmalloc.c
+++ b/lib/alloc.c
@@ -3,6 +3,7 @@
  * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
  * SPDX-FileCopyrightText: 2003 - 2006, Tomasz Kłoczko
  * SPDX-FileCopyrightText: 2008       , Nicolas François
+ * SPDX-FileCopyrightText: 2023       , Alejandro Colomar <alx@kernel.org>
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -11,7 +12,7 @@
    to be worth copyrighting :-).  I did that because a lot of code used
    malloc and strdup without checking for NULL pointer, and I like some
    message better than a core dump...  --marekm
-   
+
    Yeh, but.  Remember that bailing out might leave the system in some
    bizarre state.  You really want to put in error checking, then add
    some back-out failure recovery code. -- jfh */
@@ -20,27 +21,53 @@
 
 #ident "$Id$"
 
-#include <stdio.h>
+#include "alloc.h"
+
 #include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+
 #include "defines.h"
 #include "prototypes.h"
 #include "shadowlog.h"
 
-/*@maynotreturn@*/ /*@only@*//*@out@*//*@notnull@*/void *xmalloc (size_t size)
+
+extern inline void *xmalloc(size_t size);
+extern inline void *xmallocarray(size_t nmemb, size_t size);
+extern inline void *mallocarray(size_t nmemb, size_t size);
+extern inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
+extern inline char *xstrdup(const char *str);
+
+
+void *
+xcalloc(size_t nmemb, size_t size)
 {
-	void *ptr;
-
-	ptr = malloc (size);
-	if (NULL == ptr) {
-		(void) fprintf (log_get_logfd(),
-		                _("%s: failed to allocate memory: %s\n"),
-		                log_get_progname(), strerror (errno));
-		exit (13);
-	}
-	return ptr;
+	void  *p;
+
+	p = calloc(nmemb, size);
+	if (p == NULL)
+		goto x;
+
+	return p;
+
+x:
+	fprintf(log_get_logfd(), _("%s: %s\n"),
+	        log_get_progname(), strerror(errno));
+	exit(13);
 }
 
-/*@maynotreturn@*/ /*@only@*//*@notnull@*/char *xstrdup (const char *str)
+
+void *
+xreallocarray(void *p, size_t nmemb, size_t size)
 {
-	return strcpy (xmalloc (strlen (str) + 1), str);
+	p = reallocarrayf(p, nmemb, size);
+	if (p == NULL)
+		goto x;
+
+	return p;
+
+x:
+	fprintf(log_get_logfd(), _("%s: %s\n"),
+	        log_get_progname(), strerror(errno));
+	exit(13);
 }
diff --git a/lib/alloc.h b/lib/alloc.h
new file mode 100644
index 0000000..39405a5
--- /dev/null
+++ b/lib/alloc.h
@@ -0,0 +1,101 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_MALLOC_H_
+#define SHADOW_INCLUDE_LIB_MALLOC_H_
+
+
+#include <config.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "attr.h"
+#include "defines.h"
+
+
+#define CALLOC(n, type)   ((type *) calloc(n, sizeof(type)))
+#define XCALLOC(n, type)  ((type *) xcalloc(n, sizeof(type)))
+#define MALLOC(n, type)   ((type *) mallocarray(n, sizeof(type)))
+#define XMALLOC(n, type)  ((type *) xmallocarray(n, sizeof(type)))
+
+#define REALLOC(ptr, n, type)                                                 \
+(                                                                             \
+	_Generic(ptr, type *:  (type *) reallocarray(ptr, n, sizeof(type)))   \
+)
+
+#define REALLOCF(ptr, n, type)                                                \
+(                                                                             \
+	_Generic(ptr, type *:  (type *) reallocarrayf(ptr, n, sizeof(type)))  \
+)
+
+#define XREALLOC(ptr, n, type)                                                \
+(                                                                             \
+	_Generic(ptr, type *:  (type *) xreallocarray(ptr, n, sizeof(type)))  \
+)
+
+
+ATTR_MALLOC(free)
+inline void *xmalloc(size_t size);
+ATTR_MALLOC(free)
+inline void *xmallocarray(size_t nmemb, size_t size);
+ATTR_MALLOC(free)
+inline void *mallocarray(size_t nmemb, size_t size);
+ATTR_MALLOC(free)
+inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
+ATTR_MALLOC(free)
+inline char *xstrdup(const char *str);
+
+ATTR_MALLOC(free)
+void *xcalloc(size_t nmemb, size_t size);
+ATTR_MALLOC(free)
+void *xreallocarray(void *p, size_t nmemb, size_t size);
+
+
+inline void *
+xmalloc(size_t size)
+{
+	return xmallocarray(1, size);
+}
+
+
+inline void *
+xmallocarray(size_t nmemb, size_t size)
+{
+	return xreallocarray(NULL, nmemb, size);
+}
+
+
+inline void *
+mallocarray(size_t nmemb, size_t size)
+{
+	return reallocarray(NULL, nmemb, size);
+}
+
+
+inline void *
+reallocarrayf(void *p, size_t nmemb, size_t size)
+{
+	void  *q;
+
+	q = reallocarray(p, nmemb, size);
+
+	/* realloc(p, 0) is equivalent to free(p);  avoid double free.  */
+	if (q == NULL && nmemb != 0 && size != 0)
+		free(p);
+	return q;
+}
+
+
+inline char *
+xstrdup(const char *str)
+{
+	return strcpy(XMALLOC(strlen(str) + 1, char), str);
+}
+
+
+#endif  // include guard
diff --git a/lib/atoi/a2i.c b/lib/atoi/a2i.c
new file mode 100644
index 0000000..a2cf872
--- /dev/null
+++ b/lib/atoi/a2i.c
@@ -0,0 +1,46 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i.h"
+
+
+extern inline int a2sh_c(short *restrict n, const char *s,
+    const char **restrict endp, int base, short min, short max);
+extern inline int a2si_c(int *restrict n, const char *s,
+    const char **restrict endp, int base, int min, int max);
+extern inline int a2sl_c(long *restrict n, const char *s,
+    const char **restrict endp, int base, long min, long max);
+extern inline int a2sll_c(long long *restrict n, const char *s,
+    const char **restrict endp, int base, long long min, long long max);
+extern inline int a2uh_c(unsigned short *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned short min,
+    unsigned short max);
+extern inline int a2ui_c(unsigned int *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned int min, unsigned int max);
+extern inline int a2ul_c(unsigned long *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned long min, unsigned long max);
+extern inline int a2ull_c(unsigned long long *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned long long min,
+    unsigned long long max);
+
+
+extern inline int a2sh_nc(short *restrict n, char *s,
+    char **restrict endp, int base, short min, short max);
+extern inline int a2si_nc(int *restrict n, char *s,
+    char **restrict endp, int base, int min, int max);
+extern inline int a2sl_nc(long *restrict n, char *s,
+    char **restrict endp, int base, long min, long max);
+extern inline int a2sll_nc(long long *restrict n, char *s,
+    char **restrict endp, int base, long long min, long long max);
+extern inline int a2uh_nc(unsigned short *restrict n, char *s,
+    char **restrict endp, int base, unsigned short min, unsigned short max);
+extern inline int a2ui_nc(unsigned int *restrict n, char *s,
+    char **restrict endp, int base, unsigned int min, unsigned int max);
+extern inline int a2ul_nc(unsigned long *restrict n, char *s,
+    char **restrict endp, int base, unsigned long min, unsigned long max);
+extern inline int a2ull_nc(unsigned long long *restrict n, char *s,
+    char **restrict endp, int base, unsigned long long min,
+    unsigned long long max);
diff --git a/lib/atoi/a2i.h b/lib/atoi/a2i.h
new file mode 100644
index 0000000..64f775a
--- /dev/null
+++ b/lib/atoi/a2i.h
@@ -0,0 +1,386 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+
+#include "atoi/strtoi.h"
+#include "atoi/strtou_noneg.h"
+#include "attr.h"
+
+
+/*
+ * See the manual of these macros in liba2i's documentation:
+ * <http://www.alejandro-colomar.es/share/dist/liba2i/git/HEAD/liba2i-HEAD.pdf>
+ */
+
+
+#define a2i(TYPE, n, s, ...)                                                  \
+(                                                                             \
+	_Generic((void (*)(TYPE, typeof(s))) 0,                               \
+		void (*)(short,              const char *):  a2sh_c,          \
+		void (*)(short,              const void *):  a2sh_c,          \
+		void (*)(short,              char *):        a2sh_nc,         \
+		void (*)(short,              void *):        a2sh_nc,         \
+		void (*)(int,                const char *):  a2si_c,          \
+		void (*)(int,                const void *):  a2si_c,          \
+		void (*)(int,                char *):        a2si_nc,         \
+		void (*)(int,                void *):        a2si_nc,         \
+		void (*)(long,               const char *):  a2sl_c,          \
+		void (*)(long,               const void *):  a2sl_c,          \
+		void (*)(long,               char *):        a2sl_nc,         \
+		void (*)(long,               void *):        a2sl_nc,         \
+		void (*)(long long,          const char *):  a2sll_c,         \
+		void (*)(long long,          const void *):  a2sll_c,         \
+		void (*)(long long,          char *):        a2sll_nc,        \
+		void (*)(long long,          void *):        a2sll_nc,        \
+		void (*)(unsigned short,     const char *):  a2uh_c,          \
+		void (*)(unsigned short,     const void *):  a2uh_c,          \
+		void (*)(unsigned short,     char *):        a2uh_nc,         \
+		void (*)(unsigned short,     void *):        a2uh_nc,         \
+		void (*)(unsigned int,       const char *):  a2ui_c,          \
+		void (*)(unsigned int,       const void *):  a2ui_c,          \
+		void (*)(unsigned int,       char *):        a2ui_nc,         \
+		void (*)(unsigned int,       void *):        a2ui_nc,         \
+		void (*)(unsigned long,      const char *):  a2ul_c,          \
+		void (*)(unsigned long,      const void *):  a2ul_c,          \
+		void (*)(unsigned long,      char *):        a2ul_nc,         \
+		void (*)(unsigned long,      void *):        a2ul_nc,         \
+		void (*)(unsigned long long, const char *):  a2ull_c,         \
+		void (*)(unsigned long long, const void *):  a2ull_c,         \
+		void (*)(unsigned long long, char *):        a2ull_nc,        \
+		void (*)(unsigned long long, void *):        a2ull_nc         \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+
+#define a2sh(n, s, ...)                                                       \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2sh_c,                                        \
+		const void *:  a2sh_c,                                        \
+		char *:        a2sh_nc,                                       \
+		void *:        a2sh_nc                                        \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2si(n, s, ...)                                                       \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2si_c,                                        \
+		const void *:  a2si_c,                                        \
+		char *:        a2si_nc,                                       \
+		void *:        a2si_nc                                        \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2sl(n, s, ...)                                                       \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2sl_c,                                        \
+		const void *:  a2sl_c,                                        \
+		char *:        a2sl_nc,                                       \
+		void *:        a2sl_nc                                        \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2sll(n, s, ...)                                                      \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2sll_c,                                       \
+		const void *:  a2sll_c,                                       \
+		char *:        a2sll_nc,                                      \
+		void *:        a2sll_nc                                       \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2uh(n, s, ...)                                                       \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2uh_c,                                        \
+		const void *:  a2uh_c,                                        \
+		char *:        a2uh_nc,                                       \
+		void *:        a2uh_nc                                        \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2ui(n, s, ...)                                                       \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2ui_c,                                        \
+		const void *:  a2ui_c,                                        \
+		char *:        a2ui_nc,                                       \
+		void *:        a2ui_nc                                        \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2ul(n, s, ...)                                                       \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2ul_c,                                        \
+		const void *:  a2ul_c,                                        \
+		char *:        a2ul_nc,                                       \
+		void *:        a2ul_nc                                        \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+#define a2ull(n, s, ...)                                                      \
+(                                                                             \
+	_Generic(s,                                                           \
+		const char *:  a2ull_c,                                       \
+		const void *:  a2ull_c,                                       \
+		char *:        a2ull_nc,                                      \
+		void *:        a2ull_nc                                       \
+	)(n, s, __VA_ARGS__)                                                  \
+)
+
+
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sh_c(short *restrict n, const char *s,
+    const char **restrict endp, int base, short min, short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2si_c(int *restrict n, const char *s,
+    const char **restrict endp, int base, int min, int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sl_c(long *restrict n, const char *s,
+    const char **restrict endp, int base, long min, long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sll_c(long long *restrict n, const char *s,
+    const char **restrict endp, int base, long long min, long long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2uh_c(unsigned short *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned short min,
+    unsigned short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ui_c(unsigned int *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned int min, unsigned int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ul_c(unsigned long *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned long min, unsigned long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ull_c(unsigned long long *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned long long min,
+    unsigned long long max);
+
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sh_nc(short *restrict n, char *s,
+    char **restrict endp, int base, short min, short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2si_nc(int *restrict n, char *s,
+    char **restrict endp, int base, int min, int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sl_nc(long *restrict n, char *s,
+    char **restrict endp, int base, long min, long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2sll_nc(long long *restrict n, char *s,
+    char **restrict endp, int base, long long min, long long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2uh_nc(unsigned short *restrict n, char *s,
+    char **restrict endp, int base, unsigned short min, unsigned short max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ui_nc(unsigned int *restrict n, char *s,
+    char **restrict endp, int base, unsigned int min, unsigned int max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ul_nc(unsigned long *restrict n, char *s,
+    char **restrict endp, int base, unsigned long min, unsigned long max);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
+inline int a2ull_nc(unsigned long long *restrict n, char *s,
+    char **restrict endp, int base, unsigned long long min,
+    unsigned long long max);
+
+
+inline int
+a2sh_c(short *restrict n, const char *s,
+    const char **restrict endp, int base, short min, short max)
+{
+	return a2sh(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2si_c(int *restrict n, const char *s,
+    const char **restrict endp, int base, int min, int max)
+{
+	return a2si(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2sl_c(long *restrict n, const char *s,
+    const char **restrict endp, int base, long min, long max)
+{
+	return a2sl(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2sll_c(long long *restrict n, const char *s,
+    const char **restrict endp, int base, long long min, long long max)
+{
+	return a2sll(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2uh_c(unsigned short *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned short min,
+    unsigned short max)
+{
+	return a2uh(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2ui_c(unsigned int *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned int min, unsigned int max)
+{
+	return a2ui(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2ul_c(unsigned long *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned long min, unsigned long max)
+{
+	return a2ul(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2ull_c(unsigned long long *restrict n, const char *s,
+    const char **restrict endp, int base, unsigned long long min,
+    unsigned long long max)
+{
+	return a2ull(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+inline int
+a2sh_nc(short *restrict n, char *s,
+    char **restrict endp, int base, short min, short max)
+{
+	int  status;
+
+	*n = strtoi_(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2si_nc(int *restrict n, char *s,
+    char **restrict endp, int base, int min, int max)
+{
+	int  status;
+
+	*n = strtoi_(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2sl_nc(long *restrict n, char *s,
+    char **restrict endp, int base, long min, long max)
+{
+	int  status;
+
+	*n = strtoi_(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2sll_nc(long long *restrict n, char *s,
+    char **restrict endp, int base, long long min, long long max)
+{
+	int  status;
+
+	*n = strtoi_(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2uh_nc(unsigned short *restrict n, char *s,
+    char **restrict endp, int base, unsigned short min,
+    unsigned short max)
+{
+	int  status;
+
+	*n = strtou_noneg(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2ui_nc(unsigned int *restrict n, char *s,
+    char **restrict endp, int base, unsigned int min, unsigned int max)
+{
+	int  status;
+
+	*n = strtou_noneg(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2ul_nc(unsigned long *restrict n, char *s,
+    char **restrict endp, int base, unsigned long min, unsigned long max)
+{
+	int  status;
+
+	*n = strtou_noneg(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+inline int
+a2ull_nc(unsigned long long *restrict n, char *s,
+    char **restrict endp, int base, unsigned long long min,
+    unsigned long long max)
+{
+	int  status;
+
+	*n = strtou_noneg(s, endp, base, min, max, &status);
+	if (status != 0) {
+		errno = status;
+		return -1;
+	}
+	return 0;
+}
+
+
+#endif  // include guard
diff --git a/lib/atoi/str2i.c b/lib/atoi/str2i.c
new file mode 100644
index 0000000..25ce360
--- /dev/null
+++ b/lib/atoi/str2i.c
@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: 2007-2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/str2i.h"
+
+
+extern inline int str2sh(short *restrict n, const char *restrict s);
+extern inline int str2si(int *restrict n, const char *restrict s);
+extern inline int str2sl(long *restrict n, const char *restrict s);
+extern inline int str2sll(long long *restrict n, const char *restrict s);
+extern inline int str2uh(unsigned short *restrict n, const char *restrict s);
+extern inline int str2ui(unsigned int *restrict n, const char *restrict s);
+extern inline int str2ul(unsigned long *restrict n, const char *restrict s);
+extern inline int str2ull(unsigned long long *restrict n, const char *restrict s);
diff --git a/lib/atoi/str2i.h b/lib/atoi/str2i.h
new file mode 100644
index 0000000..b3ded03
--- /dev/null
+++ b/lib/atoi/str2i.h
@@ -0,0 +1,108 @@
+// SPDX-FileCopyrightText: 2007-2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STR2I_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STR2I_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+#include <stddef.h>
+
+#include "atoi/a2i.h"
+#include "attr.h"
+
+
+#define str2i(TYPE, ...)                                                      \
+(                                                                             \
+	_Generic((TYPE) 0,                                                    \
+		short:              str2sh,                                   \
+		int:                str2si,                                   \
+		long:               str2sl,                                   \
+		long long:          str2sll,                                  \
+		unsigned short:     str2uh,                                   \
+		unsigned int:       str2ui,                                   \
+		unsigned long:      str2ul,                                   \
+		unsigned long long: str2ull                                   \
+	)(__VA_ARGS__)                                                        \
+)
+
+
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2sh(short *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2si(int *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2sl(long *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2sll(long long *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2uh(unsigned short *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2ui(unsigned int *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2ul(unsigned long *restrict n, const char *restrict s);
+ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
+inline int str2ull(unsigned long long *restrict n, const char *restrict s);
+
+
+inline int
+str2sh(short *restrict n, const char *restrict s)
+{
+	return a2sh(n, s, NULL, 0, SHRT_MIN, SHRT_MAX);
+}
+
+
+inline int
+str2si(int *restrict n, const char *restrict s)
+{
+	return a2si(n, s, NULL, 0, INT_MIN, INT_MAX);
+}
+
+
+inline int
+str2sl(long *restrict n, const char *restrict s)
+{
+	return a2sl(n, s, NULL, 0, LONG_MIN, LONG_MAX);
+}
+
+
+inline int
+str2sll(long long *restrict n, const char *restrict s)
+{
+	return a2sll(n, s, NULL, 0, LLONG_MIN, LLONG_MAX);
+}
+
+
+inline int
+str2uh(unsigned short *restrict n, const char *restrict s)
+{
+	return a2uh(n, s, NULL, 0, 0, USHRT_MAX);
+}
+
+
+inline int
+str2ui(unsigned int *restrict n, const char *restrict s)
+{
+	return a2ui(n, s, NULL, 0, 0, UINT_MAX);
+}
+
+
+inline int
+str2ul(unsigned long *restrict n, const char *restrict s)
+{
+	return a2ul(n, s, NULL, 0, 0, ULONG_MAX);
+}
+
+
+inline int
+str2ull(unsigned long long *restrict n, const char *restrict s)
+{
+	return a2ull(n, s, NULL, 0, 0, ULLONG_MAX);
+}
+
+
+#endif  // include guard
diff --git a/lib/atoi/strtoi.c b/lib/atoi/strtoi.c
new file mode 100644
index 0000000..197707b
--- /dev/null
+++ b/lib/atoi/strtoi.c
@@ -0,0 +1,15 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/strtoi.h"
+
+#include <stdint.h>
+
+
+extern inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
+    intmax_t min, intmax_t max, int *restrict status);
+extern inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status);
diff --git a/lib/atoi/strtoi.h b/lib/atoi/strtoi.h
new file mode 100644
index 0000000..1f061fc
--- /dev/null
+++ b/lib/atoi/strtoi.h
@@ -0,0 +1,96 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOI_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/param.h>
+
+#include "attr.h"
+
+
+#define strtoNmax(TYPE, ...)                                                  \
+(                                                                             \
+	_Generic((TYPE) 0,                                                    \
+		intmax_t:  strtoimax,                                         \
+		uintmax_t: strtoumax                                          \
+	)(__VA_ARGS__)                                                        \
+)
+
+
+#define strtoN(s, endp, base, min, max, status, TYPE)                         \
+({                                                                            \
+	const char  *s_ = s;                                                  \
+	char        **endp_ = endp;                                           \
+	int         base_ = base;                                             \
+	TYPE        min_ = min;                                               \
+	TYPE        max_ = max;                                               \
+	int         *status_ = status;                                        \
+                                                                              \
+	int         e_, st_;                                                  \
+	char        *end_;                                                    \
+	TYPE        n_;                                                       \
+                                                                              \
+	if (endp_ == NULL)                                                    \
+		endp_ = &end_;                                                \
+	if (status_ == NULL)                                                  \
+		status_ = &st_;                                               \
+                                                                              \
+	if (base_ != 0 && (base_ < 0 || base_ > 36)) {                        \
+		*status_ = EINVAL;                                            \
+		n_ = 0;                                                       \
+                                                                              \
+	} else {                                                              \
+		e_ = errno;                                                   \
+		errno = 0;                                                    \
+		n_ = strtoNmax(TYPE, s_, endp_, base_);                       \
+                                                                              \
+		if (*endp_ == s_)                                             \
+			*status_ = ECANCELED;                                 \
+		else if (errno == ERANGE || n_ < min_ || n_ > max_)           \
+			*status_ = ERANGE;                                    \
+		else if (**endp_ != '\0')                                     \
+			*status_ = ENOTSUP;                                   \
+		else                                                          \
+			*status_ = 0;                                         \
+                                                                              \
+		errno = e_;                                                   \
+	}                                                                     \
+	MAX(min_, MIN(max_, n_));                                             \
+})
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
+    intmax_t min, intmax_t max, int *restrict status);
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status);
+
+
+inline intmax_t
+strtoi_(const char *s, char **restrict endp, int base,
+    intmax_t min, intmax_t max, int *restrict status)
+{
+	return strtoN(s, endp, base, min, max, status, intmax_t);
+}
+
+
+inline uintmax_t
+strtou_(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status)
+{
+	return strtoN(s, endp, base, min, max, status, uintmax_t);
+}
+
+
+#endif  // include guard
diff --git a/lib/atoi/strtou_noneg.c b/lib/atoi/strtou_noneg.c
new file mode 100644
index 0000000..71cacbd
--- /dev/null
+++ b/lib/atoi/strtou_noneg.c
@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/strtou_noneg.h"
+
+#include <stdint.h>
+
+
+extern inline uintmax_t strtou_noneg(const char *s, char **restrict endp,
+    int base, uintmax_t min, uintmax_t max, int *restrict status);
diff --git a/lib/atoi/strtou_noneg.h b/lib/atoi/strtou_noneg.h
new file mode 100644
index 0000000..6d77adf
--- /dev/null
+++ b/lib/atoi/strtou_noneg.h
@@ -0,0 +1,39 @@
+// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "atoi/strtoi.h"
+#include "attr.h"
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline uintmax_t strtou_noneg(const char *s, char **restrict endp,
+    int base, uintmax_t min, uintmax_t max, int *restrict status);
+
+
+inline uintmax_t
+strtou_noneg(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status)
+{
+	int  st;
+
+	if (status == NULL)
+		status = &st;
+	if (strtoi_(s, endp, base, 0, 1, status) == 0 && *status == ERANGE)
+		return min;
+
+	return strtou_(s, endp, base, min, max, status);
+}
+
+
+#endif  // include guard
diff --git a/lib/attr.h b/lib/attr.h
new file mode 100644
index 0000000..3835848
--- /dev/null
+++ b/lib/attr.h
@@ -0,0 +1,33 @@
+#ifndef SHADOW_INCLUDE_LIB_ATTR_H_
+#define SHADOW_INCLUDE_LIB_ATTR_H_
+
+
+#include "config.h"
+
+
+#if defined(__GNUC__)
+# define MAYBE_UNUSED                __attribute__((unused))
+# define NORETURN                    __attribute__((__noreturn__))
+# define format_attr(type, fmt, va)  __attribute__((format(type, fmt, va)))
+# define ATTR_ACCESS(...)            __attribute__((access(__VA_ARGS__)))
+#else
+# define MAYBE_UNUSED
+# define NORETURN
+# define format_attr(type, fmt, va)
+# define ATTR_ACCESS(...)
+#endif
+
+#if (__GNUC__ >= 11) && !defined(__clang__)
+# define ATTR_MALLOC(deallocator)    [[gnu::malloc(deallocator)]]
+#else
+# define ATTR_MALLOC(deallocator)
+#endif
+
+#if (__GNUC__ >= 14)
+# define ATTR_STRING(...)       [[gnu::null_terminated_string_arg(__VA_ARGS__)]]
+#else
+# define ATTR_STRING(...)
+#endif
+
+
+#endif  // include guard
diff --git a/libmisc/audit_help.c b/lib/audit_help.c
index e6c2006..54109f0 100644
--- a/libmisc/audit_help.c
+++ b/lib/audit_help.c
@@ -21,6 +21,8 @@
 #include <libaudit.h>
 #include <errno.h>
 #include <stdio.h>
+
+#include "attr.h"
 #include "prototypes.h"
 #include "shadowlog.h"
 int audit_fd;
@@ -54,7 +56,7 @@ void audit_help_open (void)
  * id  -  uid or gid that the operation is being performed on. This is used
  *	  only when user is NULL.
  */
-void audit_logger (int type, unused const char *pgname, const char *op,
+void audit_logger (int type, MAYBE_UNUSED const char *pgname, const char *op,
                    const char *name, unsigned int id,
                    shadow_audit_result result)
 {
@@ -62,7 +64,7 @@ void audit_logger (int type, unused const char *pgname, const char *op,
 		return;
 	} else {
 		audit_log_acct_message (audit_fd, type, NULL, op, name, id,
-		                        NULL, NULL, NULL, (int) result);
+		                        NULL, NULL, NULL, result);
 	}
 }
 
@@ -77,11 +79,11 @@ void audit_logger_message (const char *message, shadow_audit_result result)
 		                        NULL, /* hostname */
 		                        NULL, /* addr */
 		                        NULL, /* tty */
-		                        (int) result);
+		                        result);
 	}
 }
 
 #else				/* WITH_AUDIT */
-extern int errno;	/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* WITH_AUDIT */
 
diff --git a/libmisc/basename.c b/lib/basename.c
index fe91653..95a2f85 100644
--- a/libmisc/basename.c
+++ b/lib/basename.c
@@ -21,6 +21,10 @@
 #include "prototypes.h"
 /*@observer@*/const char *Basename (const char *str)
 {
+	if (str == NULL) {
+		abort ();
+	}
+
 	char *cp = strrchr (str, '/');
 
 	return (NULL != cp) ? cp + 1 : str;
diff --git a/lib/bit.c b/lib/bit.c
new file mode 100644
index 0000000..1ffc6dc
--- /dev/null
+++ b/lib/bit.c
@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText:  2022 - 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "bit.h"
+
+#include <limits.h>
+
+
+extern inline unsigned long bit_ceilul(unsigned long x);
+extern inline unsigned long bit_ceil_wrapul(unsigned long x);
+extern inline int leading_zerosul(unsigned long x);
diff --git a/lib/bit.h b/lib/bit.h
new file mode 100644
index 0000000..7f09eb4
--- /dev/null
+++ b/lib/bit.h
@@ -0,0 +1,53 @@
+/*
+ * SPDX-FileCopyrightText:  2022 - 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_BIT_H_
+#define SHADOW_INCLUDE_LIB_BIT_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+
+
+#ifndef ULONG_WIDTH
+#define ULONG_WIDTH (sizeof(unsigned long) * CHAR_BIT)
+#endif
+
+
+inline unsigned long bit_ceilul(unsigned long x);
+inline unsigned long bit_ceil_wrapul(unsigned long x);
+inline int leading_zerosul(unsigned long x);
+
+
+/* stdc_bit_ceilul(3) */
+inline unsigned long
+bit_ceilul(unsigned long x)
+{
+	return 1 + (ULONG_MAX >> leading_zerosul(x));
+}
+
+
+/* stdc_bit_ceilul(3), but wrap instead of having Undefined Behavior */
+inline unsigned long
+bit_ceil_wrapul(unsigned long x)
+{
+	if (x == 0)
+		return 0;
+
+	return bit_ceilul(x);
+}
+
+/* stdc_leading_zerosul(3) */
+inline int
+leading_zerosul(unsigned long x)
+{
+	return (x == 0) ? ULONG_WIDTH : __builtin_clzl(x);
+}
+
+
+#endif  // include guard
diff --git a/libmisc/btrfs.c b/lib/btrfs.c
index a2563f7..0391598 100644
--- a/libmisc/btrfs.c
+++ b/lib/btrfs.c
@@ -39,7 +39,7 @@ static int run_btrfs_subvolume_cmd(const char *subcmd, const char *arg1, const c
 		NULL
 	};
 
-	if (access(cmd, X_OK)) {
+	if (!cmd || access(cmd, X_OK)) {
 		return 1;
 	}
 
diff --git a/lib/cast.h b/lib/cast.h
new file mode 100644
index 0000000..5cbbcf6
--- /dev/null
+++ b/lib/cast.h
@@ -0,0 +1,15 @@
+// SPDX-FileCopyrightText: 2022-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_CAST_H_
+#define SHADOW_INCLUDE_LIB_CAST_H_
+
+
+#include <config.h>
+
+
+#define const_cast(T, p)  _Generic(p, const T:  (T) (p))
+
+
+#endif  // include guard
diff --git a/libmisc/chkname.c b/lib/chkname.c
index e31ee8c..995562f 100644
--- a/libmisc/chkname.c
+++ b/lib/chkname.c
@@ -1,11 +1,10 @@
-/*
- * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2001 - 2005, Tomasz Kłoczko
- * SPDX-FileCopyrightText: 2005 - 2008, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-2000, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2001-2005, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2005-2008, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
 
 /*
  * is_valid_user_name(), is_valid_group_name() - check the new user/group
@@ -15,16 +14,39 @@
  *   false - bad name
  */
 
+
 #include <config.h>
 
 #ident "$Id$"
 
 #include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <unistd.h>
+
 #include "defines.h"
 #include "chkname.h"
 
+
 int allow_bad_names = false;
 
+
+size_t
+login_name_max_size(void)
+{
+	long  conf;
+
+	errno = 0;
+	conf = sysconf(_SC_LOGIN_NAME_MAX);
+	if (conf == -1 && errno != 0)
+		return LOGIN_NAME_MAX;
+
+	return conf;
+}
+
+
 static bool is_valid_name (const char *name)
 {
 	if (allow_bad_names) {
@@ -32,8 +54,8 @@ static bool is_valid_name (const char *name)
 	}
 
 	/*
-         * User/group names must match gnu e-regex:
-         *    [a-zA-Z0-9_.][a-zA-Z0-9_.-]{0,30}[a-zA-Z0-9_.$-]?
+         * User/group names must match BRE regex:
+         *    [a-zA-Z0-9_.][a-zA-Z0-9_.-]*$\?
          *
          * as a non-POSIX, extension, allow "$" as the last char for
          * sake of Samba 3.x "add machine script"
@@ -72,19 +94,17 @@ static bool is_valid_name (const char *name)
 	return !numeric;
 }
 
-bool is_valid_user_name (const char *name)
+
+bool
+is_valid_user_name(const char *name)
 {
-	/*
-	 * User names are limited by whatever utmp can
-	 * handle.
-	 */
-	if (strlen (name) > USER_NAME_MAX_LENGTH) {
+	if (strlen(name) >= login_name_max_size())
 		return false;
-	}
 
-	return is_valid_name (name);
+	return is_valid_name(name);
 }
 
+
 bool is_valid_group_name (const char *name)
 {
 	/*
@@ -98,4 +118,3 @@ bool is_valid_group_name (const char *name)
 
 	return is_valid_name (name);
 }
-
diff --git a/libmisc/chkname.h b/lib/chkname.h
index 0771347..4306a8a 100644
--- a/libmisc/chkname.h
+++ b/lib/chkname.h
@@ -11,6 +11,7 @@
 #ifndef _CHKNAME_H_
 #define _CHKNAME_H_
 
+
 /*
  * is_valid_user_name(), is_valid_group_name() - check the new user/group
  * name for validity;
@@ -19,8 +20,14 @@
  *   false - bad name
  */
 
-#include "defines.h"
 
+#include <config.h>
+
+#include <stdbool.h>
+#include <stddef.h>
+
+
+extern size_t login_name_max_size(void);
 extern bool is_valid_user_name (const char *name);
 extern bool is_valid_group_name (const char *name);
 
diff --git a/libmisc/chowndir.c b/lib/chowndir.c
index d31618a..d31618a 100644
--- a/libmisc/chowndir.c
+++ b/lib/chowndir.c
diff --git a/libmisc/chowntty.c b/lib/chowntty.c
index 8043d8c..70127f3 100644
--- a/libmisc/chowntty.c
+++ b/lib/chowntty.c
@@ -51,7 +51,7 @@ void chown_tty (const struct passwd *info)
 	 */
 
 	if (   (fchown (STDIN_FILENO, info->pw_uid, gid) != 0)
-	    || (fchmod (STDIN_FILENO, (mode_t)getdef_num ("TTYPERM", 0600)) != 0)) {
+	    || (fchmod (STDIN_FILENO, getdef_num ("TTYPERM", 0600)) != 0)) {
 		int err = errno;
 		FILE *shadow_logfd = log_get_logfd();
 
diff --git a/libmisc/cleanup.c b/lib/cleanup.c
index c16f1bc..c16f1bc 100644
--- a/libmisc/cleanup.c
+++ b/lib/cleanup.c
diff --git a/libmisc/cleanup_group.c b/lib/cleanup_group.c
index df3ebfd..50c7084 100644
--- a/libmisc/cleanup_group.c
+++ b/lib/cleanup_group.c
@@ -9,6 +9,7 @@
 #include <assert.h>
 #include <stdio.h>
 
+#include "attr.h"
 #include "defines.h"
 #include "groupio.h"
 #include "sgroupio.h"
@@ -22,7 +23,7 @@
  */
 void cleanup_report_add_group (void *group_name)
 {
-	const char *name = (const char *)group_name;
+	const char *name = group_name;
 
 	SYSLOG ((LOG_ERR, "failed to add group %s", name));
 #ifdef WITH_AUDIT
@@ -40,7 +41,7 @@ void cleanup_report_add_group (void *group_name)
  */
 void cleanup_report_del_group (void *group_name)
 {
-	const char *name = (const char *)group_name;
+	const char *name = group_name;
 
 	SYSLOG ((LOG_ERR, "failed to remove group %s", name));
 #ifdef WITH_AUDIT
@@ -95,7 +96,7 @@ void cleanup_report_mod_gshadow (void *cleanup_info)
  */
 void cleanup_report_add_group_group (void *group_name)
 {
-	const char *name = (const char *)group_name;
+	const char *name = group_name;
 
 	SYSLOG ((LOG_ERR, "failed to add group %s to %s", name, gr_dbname ()));
 #ifdef WITH_AUDIT
@@ -115,7 +116,7 @@ void cleanup_report_add_group_group (void *group_name)
  */
 void cleanup_report_add_group_gshadow (void *group_name)
 {
-	const char *name = (const char *)group_name;
+	const char *name = group_name;
 
 	SYSLOG ((LOG_ERR, "failed to add group %s to %s", name, sgr_dbname ()));
 #ifdef WITH_AUDIT
@@ -136,7 +137,7 @@ void cleanup_report_add_group_gshadow (void *group_name)
  */
 void cleanup_report_del_group_group (void *group_name)
 {
-	const char *name = (const char *)group_name;
+	const char *name = group_name;
 
 	SYSLOG ((LOG_ERR,
 	         "failed to remove group %s from %s",
@@ -159,7 +160,7 @@ void cleanup_report_del_group_group (void *group_name)
  */
 void cleanup_report_del_group_gshadow (void *group_name)
 {
-	const char *name = (const char *)group_name;
+	const char *name = group_name;
 
 	SYSLOG ((LOG_ERR,
 	         "failed to remove group %s from %s",
@@ -178,7 +179,7 @@ void cleanup_report_del_group_gshadow (void *group_name)
  *
  * It should be registered after the group file is successfully locked.
  */
-void cleanup_unlock_group (unused void *arg)
+void cleanup_unlock_group (MAYBE_UNUSED void *arg)
 {
 	if (gr_unlock () == 0) {
 		fprintf (log_get_logfd(),
@@ -198,7 +199,7 @@ void cleanup_unlock_group (unused void *arg)
  *
  * It should be registered after the gshadow file is successfully locked.
  */
-void cleanup_unlock_gshadow (unused void *arg)
+void cleanup_unlock_gshadow (MAYBE_UNUSED void *arg)
 {
 	if (sgr_unlock () == 0) {
 		fprintf (log_get_logfd(),
diff --git a/libmisc/cleanup_user.c b/lib/cleanup_user.c
index 26675c6..9c4bda9 100644
--- a/libmisc/cleanup_user.c
+++ b/lib/cleanup_user.c
@@ -9,6 +9,7 @@
 #include <assert.h>
 #include <stdio.h>
 
+#include "attr.h"
 #include "defines.h"
 #include "pwio.h"
 #include "shadowio.h"
@@ -16,13 +17,13 @@
 #include "shadowlog.h"
 
 /*
- * cleanup_report_add_user - Report failure to add an user to the system
+ * cleanup_report_add_user - Report failure to add a user to the system
  *
- * It should be registered when it is decided to add an user to the system.
+ * It should be registered when it is decided to add a user to the system.
  */
 void cleanup_report_add_user (void *user_name)
 {
-	const char *name = (const char *)user_name;
+	const char *name = user_name;
 
 	SYSLOG ((LOG_ERR, "failed to add user %s", name));
 #ifdef WITH_AUDIT
@@ -51,15 +52,15 @@ void cleanup_report_mod_passwd (void *cleanup_info)
 }
 
 /*
- * cleanup_report_add_user_passwd - Report failure to add an user to
+ * cleanup_report_add_user_passwd - Report failure to add a user to
  * /etc/passwd
  *
- * It should be registered when it is decided to add an user to the
+ * It should be registered when it is decided to add a user to the
  * /etc/passwd database.
  */
 void cleanup_report_add_user_passwd (void *user_name)
 {
-	const char *name = (const char *)user_name;
+	const char *name = user_name;
 
 	SYSLOG ((LOG_ERR, "failed to add user %s to %s", name, pw_dbname ()));
 #ifdef WITH_AUDIT
@@ -71,15 +72,15 @@ void cleanup_report_add_user_passwd (void *user_name)
 }
 
 /*
- * cleanup_report_add_user_shadow - Report failure to add an user to
+ * cleanup_report_add_user_shadow - Report failure to add a user to
  * /etc/shadow
  *
- * It should be registered when it is decided to add an user to the
+ * It should be registered when it is decided to add a user to the
  * /etc/shadow database.
  */
 void cleanup_report_add_user_shadow (void *user_name)
 {
-	const char *name = (const char *)user_name;
+	const char *name = user_name;
 
 	SYSLOG ((LOG_ERR, "failed to add user %s to %s", name, spw_dbname ()));
 #ifdef WITH_AUDIT
@@ -95,7 +96,7 @@ void cleanup_report_add_user_shadow (void *user_name)
  *
  * It should be registered after the passwd database is successfully locked.
  */
-void cleanup_unlock_passwd (unused void *arg)
+void cleanup_unlock_passwd (MAYBE_UNUSED void *arg)
 {
 	if (pw_unlock () == 0) {
 		fprintf (log_get_logfd(),
@@ -114,7 +115,7 @@ void cleanup_unlock_passwd (unused void *arg)
  *
  * It should be registered after the shadow database is successfully locked.
  */
-void cleanup_unlock_shadow (unused void *arg)
+void cleanup_unlock_shadow (MAYBE_UNUSED void *arg)
 {
 	if (spw_unlock () == 0) {
 		fprintf (log_get_logfd(),
diff --git a/lib/commonio.c b/lib/commonio.c
index 9a02ce1..01a26c9 100644
--- a/lib/commonio.c
+++ b/lib/commonio.c
@@ -21,6 +21,9 @@
 #include <errno.h>
 #include <stdio.h>
 #include <signal.h>
+
+#include "alloc.h"
+#include "memzero.h"
 #include "nscd.h"
 #include "sssd.h"
 #ifdef WITH_TCB
@@ -29,6 +32,8 @@
 #include "prototypes.h"
 #include "commonio.h"
 #include "shadowlog_internal.h"
+#include "string/sprintf.h"
+
 
 /* local function prototypes */
 static int lrename (const char *, const char *);
@@ -106,9 +111,9 @@ static int check_link_count (const char *file, bool log)
 
 	if (sb.st_nlink != 2) {
 		if (log) {
-			(void) fprintf (shadow_logfd,
-			                "%s: %s: lock file already used (nlink: %u)\n",
-			                shadow_progname, file, sb.st_nlink);
+			fprintf(shadow_logfd,
+			        "%s: %s: lock file already used (nlink: %ju)\n",
+			        shadow_progname, file, (uintmax_t) sb.st_nlink);
 		}
 		return 0;
 	}
@@ -119,11 +124,11 @@ static int check_link_count (const char *file, bool log)
 
 static int do_lock_file (const char *file, const char *lock, bool log)
 {
-	int fd;
-	pid_t pid;
-	ssize_t len;
-	int retval;
-	char buf[32];
+	int      fd;
+	int      retval;
+	char     buf[32];
+	pid_t    pid;
+	ssize_t  len;
 
 	fd = open (file, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 	if (-1 == fd) {
@@ -136,9 +141,9 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 	}
 
 	pid = getpid ();
-	snprintf (buf, sizeof buf, "%lu", (unsigned long) pid);
+	SNPRINTF(buf, "%lu", (unsigned long) pid);
 	len = (ssize_t) strlen (buf) + 1;
-	if (write (fd, buf, (size_t) len) != len) {
+	if (write_full(fd, buf, len) == -1) {
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: %s file write error: %s\n",
@@ -190,7 +195,7 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		return 0;
 	}
 	buf[len] = '\0';
-	if (get_pid (buf, &pid) == 0) {
+	if (get_pid(buf, &pid) == -1) {
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: existing lock file %s with an invalid PID '%s'\n",
@@ -251,25 +256,13 @@ static /*@null@*/ /*@dependent@*/FILE *fopen_set_perms (
 		return NULL;
 	}
 
-#ifdef HAVE_FCHOWN
 	if (fchown (fileno (fp), sb->st_uid, sb->st_gid) != 0) {
 		goto fail;
 	}
-#else				/* !HAVE_FCHOWN */
-	if (chown (name, sb->st_mode) != 0) {
-		goto fail;
-	}
-#endif				/* !HAVE_FCHOWN */
-
-#ifdef HAVE_FCHMOD
 	if (fchmod (fileno (fp), sb->st_mode & 0664) != 0) {
 		goto fail;
 	}
-#else				/* !HAVE_FCHMOD */
-	if (chmod (name, sb->st_mode & 0664) != 0) {
-		goto fail;
-	}
-#endif				/* !HAVE_FCHMOD */
+
 	return fp;
 
       fail:
@@ -349,7 +342,7 @@ static void free_linked_list (struct commonio_db *db)
 
 int commonio_setname (struct commonio_db *db, const char *name)
 {
-	snprintf (db->filename, sizeof (db->filename), "%s", name);
+	SNPRINTF(db->filename, "%s", name);
 	db->setname = true;
 	return 1;
 }
@@ -363,33 +356,25 @@ bool commonio_present (const struct commonio_db *db)
 
 int commonio_lock_nowait (struct commonio_db *db, bool log)
 {
-	char* file = NULL;
-	char* lock = NULL;
-	size_t lock_file_len;
-	size_t file_len;
-	int err = 0;
+	int   err = 0;
+	char  *file = NULL;
+	char  *lock = NULL;
 
 	if (db->locked) {
 		return 1;
 	}
-	file_len = strlen(db->filename) + 11;/* %lu max size */
-	lock_file_len = strlen(db->filename) + 6; /* sizeof ".lock" */
-	file = (char*)malloc(file_len);
-	if (file == NULL) {
+
+	if (asprintf(&file, "%s.%ju", db->filename, (uintmax_t) getpid()) == -1)
 		goto cleanup_ENOMEM;
-	}
-	lock = (char*)malloc(lock_file_len);
-	if (lock == NULL) {
+	if (asprintf(&lock, "%s.lock", db->filename) == -1)
 		goto cleanup_ENOMEM;
-	}
-	snprintf (file, file_len, "%s.%lu",
-	          db->filename, (unsigned long) getpid ());
-	snprintf (lock, lock_file_len, "%s.lock", db->filename);
+
 	if (do_lock_file (file, lock, log) != 0) {
 		db->locked = true;
 		lock_count++;
 		err = 1;
 	}
+
 cleanup_ENOMEM:
 	free(file);
 	free(lock);
@@ -483,7 +468,7 @@ static void dec_lock_count (void)
 
 int commonio_unlock (struct commonio_db *db)
 {
-	char lock[1024];
+	char  lock[1029];
 
 	if (db->isopen) {
 		db->readonly = true;
@@ -500,7 +485,7 @@ int commonio_unlock (struct commonio_db *db)
 		 * then call ulckpwdf() (if used) on last unlock.
 		 */
 		db->locked = false;
-		snprintf (lock, sizeof lock, "%s.lock", db->filename);
+		SNPRINTF(lock, "%s.lock", db->filename);
 		unlink (lock);
 		dec_lock_count ();
 		return 1;
@@ -618,7 +603,7 @@ int commonio_open (struct commonio_db *db, int mode)
 
 	fd = open (db->filename,
 	             (db->readonly ? O_RDONLY : O_RDWR)
-	           | O_NOCTTY | O_NONBLOCK | O_NOFOLLOW);
+	           | O_NOCTTY | O_NONBLOCK | O_NOFOLLOW | O_CLOEXEC);
 	saved_errno = errno;
 	db->fp = NULL;
 	if (fd >= 0) {
@@ -649,22 +634,19 @@ int commonio_open (struct commonio_db *db, int mode)
 		return 0;
 	}
 
-	/* Do not inherit fd in spawned processes (e.g. nscd) */
-	fcntl (fileno (db->fp), F_SETFD, FD_CLOEXEC);
-
 	buflen = BUFLEN;
-	buf = (char *) malloc (buflen);
+	buf = MALLOC(buflen, char);
 	if (NULL == buf) {
 		goto cleanup_ENOMEM;
 	}
 
-	while (db->ops->fgets (buf, (int) buflen, db->fp) == buf) {
-		while (   ((cp = strrchr (buf, '\n')) == NULL)
+	while (db->ops->fgets (buf, buflen, db->fp) == buf) {
+		while (   (strrchr (buf, '\n') == NULL)
 		       && (feof (db->fp) == 0)) {
 			size_t len;
 
 			buflen += BUFLEN;
-			cp = (char *) realloc (buf, buflen);
+			cp = REALLOC(buf, buflen, char);
 			if (NULL == cp) {
 				goto cleanup_buf;
 			}
@@ -698,7 +680,7 @@ int commonio_open (struct commonio_db *db, int mode)
 			}
 		}
 
-		p = (struct commonio_entry *) malloc (sizeof *p);
+		p = MALLOC(1, struct commonio_entry);
 		if (NULL == p) {
 			goto cleanup_entry;
 		}
@@ -775,7 +757,7 @@ commonio_sort (struct commonio_db *db, int (*cmp) (const void *, const void *))
 		return 0;
 	}
 
-	entries = malloc (n * sizeof (struct commonio_entry *));
+	entries = MALLOC(n, struct commonio_entry *);
 	if (entries == NULL) {
 		return -1;
 	}
@@ -912,9 +894,9 @@ static int write_all (const struct commonio_db *db)
 
 int commonio_close (struct commonio_db *db)
 {
-	char buf[1024];
-	int errors = 0;
-	struct stat sb;
+	int          errors = 0;
+	char         buf[1024];
+	struct stat  sb;
 
 	if (!db->isopen) {
 		errno = EINVAL;
@@ -945,7 +927,11 @@ int commonio_close (struct commonio_db *db)
 		/*
 		 * Create backup file.
 		 */
-		snprintf (buf, sizeof buf, "%s-", db->filename);
+		if (SNPRINTF(buf, "%s-", db->filename) == -1) {
+			(void) fclose (db->fp);
+			db->fp = NULL;
+			goto fail;
+		}
 
 #ifdef WITH_SELINUX
 		if (set_selinux_file_context (db->filename, S_IFREG) != 0) {
@@ -960,15 +946,15 @@ int commonio_close (struct commonio_db *db)
 			errors++;
 		}
 
+		db->fp = NULL;
+
 #ifdef WITH_SELINUX
 		if (reset_selinux_file_context () != 0) {
 			errors++;
 		}
 #endif
-		if (errors != 0) {
-			db->fp = NULL;
+		if (errors != 0)
 			goto fail;
-		}
 	} else {
 		/*
 		 * Default permissions for new [g]shadow files.
@@ -978,7 +964,8 @@ int commonio_close (struct commonio_db *db)
 		sb.st_gid = db->st_gid;
 	}
 
-	snprintf (buf, sizeof buf, "%s+", db->filename);
+	if (SNPRINTF(buf, "%s+", db->filename) == -1)
+		goto fail;
 
 #ifdef WITH_SELINUX
 	if (set_selinux_file_context (db->filename, S_IFREG) != 0) {
@@ -998,13 +985,11 @@ int commonio_close (struct commonio_db *db)
 	if (fflush (db->fp) != 0) {
 		errors++;
 	}
-#ifdef HAVE_FSYNC
+
 	if (fsync (fileno (db->fp)) != 0) {
 		errors++;
 	}
-#else				/* !HAVE_FSYNC */
-	sync ();
-#endif				/* !HAVE_FSYNC */
+
 	if (fclose (db->fp) != 0) {
 		errors++;
 	}
@@ -1096,7 +1081,7 @@ int commonio_update (struct commonio_db *db, const void *eptr)
 		return 1;
 	}
 	/* not found, new entry */
-	p = (struct commonio_entry *) malloc (sizeof *p);
+	p = MALLOC(1, struct commonio_entry);
 	if (NULL == p) {
 		db->ops->free (nentry);
 		errno = ENOMEM;
@@ -1133,7 +1118,7 @@ int commonio_append (struct commonio_db *db, const void *eptr)
 		return 0;
 	}
 	/* new entry */
-	p = (struct commonio_entry *) malloc (sizeof *p);
+	p = MALLOC(1, struct commonio_entry);
 	if (NULL == p) {
 		db->ops->free (nentry);
 		errno = ENOMEM;
@@ -1200,6 +1185,8 @@ int commonio_remove (struct commonio_db *db, const char *name)
 		db->ops->free (p->eptr);
 	}
 
+	free(p);
+
 	return 1;
 }
 
diff --git a/lib/commonio.h b/lib/commonio.h
index e63c5b4..fedbefa 100644
--- a/lib/commonio.h
+++ b/lib/commonio.h
@@ -11,8 +11,11 @@
 #ifndef COMMONIO_H
 #define COMMONIO_H
 
+
+#include "attr.h"
 #include "defines.h" /* bool */
 
+
 /*
  * Linked list entry.
  */
@@ -37,7 +40,7 @@ struct commonio_ops {
 	/*
 	 * free() the object including any strings pointed by it.
 	 */
-	void (*free) (/*@out@*/ /*@only@*/void *);
+	void (*free)(/*@only@*/void *);
 
 	/*
 	 * Return the name of the object (for example, pw_name
@@ -61,7 +64,9 @@ struct commonio_ops {
 	 * fgets and fputs (can be replaced by versions that
 	 * understand line continuation conventions).
 	 */
-	/*@null@*/char *(*fgets) (/*@returned@*/ /*@out@*/char *s, int n, FILE *stream);
+	ATTR_ACCESS(write_only, 1, 2)
+	/*@null@*/char *(*fgets)(/*@returned@*/char *restrict s, int n,
+	                         FILE *restrict stream);
 	int (*fputs) (const char *, FILE *);
 
 	/*
@@ -123,6 +128,7 @@ extern int commonio_setname (struct commonio_db *, const char *);
 extern bool commonio_present (const struct commonio_db *db);
 extern int commonio_lock (struct commonio_db *);
 extern int commonio_lock_nowait (struct commonio_db *, bool log);
+extern int do_fcntl_lock (const char *file, bool log, short type);
 extern int commonio_open (struct commonio_db *, int);
 extern /*@observer@*/ /*@null@*/const void *commonio_locate (struct commonio_db *, const char *);
 extern int commonio_update (struct commonio_db *, const void *);
diff --git a/libmisc/console.c b/lib/console.c
index c475aa2..92065d9 100644
--- a/libmisc/console.c
+++ b/lib/console.c
@@ -13,6 +13,7 @@
 #include <stdio.h>
 #include "getdef.h"
 #include "prototypes.h"
+#include "string/strtcpy.h"
 
 #ident "$Id$"
 
@@ -44,8 +45,7 @@ static bool is_listed (const char *cfgin, const char *tty, bool def)
 
 	if (*cons != '/') {
 		char *pbuf;
-		strncpy (buf, cons, sizeof (buf));
-		buf[sizeof (buf) - 1] = '\0';
+		STRTCPY(buf, cons);
 		pbuf = &buf[0];
 		while ((s = strtok (pbuf, ":")) != NULL) {
 			if (strcmp (s, tty) == 0) {
@@ -71,8 +71,9 @@ static bool is_listed (const char *cfgin, const char *tty, bool def)
 	 * See if this tty is listed in the console file.
 	 */
 
-	while (fgets (buf, (int) sizeof (buf), fp) != NULL) {
-		buf[strlen (buf) - 1] = '\0';
+	while (fgets (buf, sizeof (buf), fp) != NULL) {
+		/* Remove optional trailing '\n'. */
+		buf[strcspn (buf, "\n")] = '\0';
 		if (strcmp (buf, tty) == 0) {
 			(void) fclose (fp);
 			return true;
diff --git a/libmisc/copydir.c b/lib/copydir.c
index b692aa9..926033a 100644
--- a/libmisc/copydir.c
+++ b/lib/copydir.c
@@ -17,6 +17,9 @@
 #include <sys/time.h>
 #include <fcntl.h>
 #include <stdio.h>
+
+#include "alloc.h"
+#include "attr.h"
 #include "prototypes.h"
 #include "defines.h"
 #ifdef WITH_SELINUX
@@ -33,6 +36,7 @@
 #include <attr/libattr.h>
 #endif				/* WITH_ATTR */
 #include "shadowlog.h"
+#include "string/sprintf.h"
 
 
 static /*@null@*/const char *src_orig;
@@ -64,12 +68,12 @@ static int copy_dir (const struct path_info *src, const struct path_info *dst,
                      gid_t old_gid, gid_t new_gid);
 static /*@null@*/char *readlink_malloc (const char *filename);
 static int copy_symlink (const struct path_info *src, const struct path_info *dst,
-                         unused bool reset_selinux,
+                         MAYBE_UNUSED bool reset_selinux,
                          const struct stat *statp, const struct timespec mt[],
                          uid_t old_uid, uid_t new_uid,
                          gid_t old_gid, gid_t new_gid);
 static int copy_hardlink (const struct path_info *dst,
-                          unused bool reset_selinux,
+                          MAYBE_UNUSED bool reset_selinux,
                           struct link_name *lp);
 static int copy_special (const struct path_info *src, const struct path_info *dst,
                          bool reset_selinux,
@@ -93,7 +97,7 @@ static int fchown_if_needed (int fdst, const struct stat *statp,
  * error_acl - format the error messages for the ACL and EQ libraries.
  */
 format_attr(printf, 2, 3)
-static void error_acl (unused struct error_context *ctx, const char *fmt, ...)
+static void error_acl (MAYBE_UNUSED struct error_context *ctx, const char *fmt, ...)
 {
 	va_list ap;
 	FILE *shadow_logfd = log_get_logfd();
@@ -206,11 +210,7 @@ static void remove_link (/*@only@*/struct link_name *ln)
 
 static /*@exposed@*/ /*@null@*/struct link_name *check_link (const char *name, const struct stat *sb)
 {
-	struct link_name *lp;
-	size_t src_len;
-	size_t dst_len;
-	size_t name_len;
-	size_t len;
+	struct link_name  *lp;
 
 	/* copy_tree () must be the entry point */
 	assert (NULL != src_orig);
@@ -226,16 +226,11 @@ static /*@exposed@*/ /*@null@*/struct link_name *check_link (const char *name, c
 		return NULL;
 	}
 
-	lp = (struct link_name *) xmalloc (sizeof *lp);
-	src_len = strlen (src_orig);
-	dst_len = strlen (dst_orig);
-	name_len = strlen (name);
+	lp = XMALLOC(1, struct link_name);
 	lp->ln_dev = sb->st_dev;
 	lp->ln_ino = sb->st_ino;
 	lp->ln_count = sb->st_nlink;
-	len = name_len - src_len + dst_len + 1;
-	lp->ln_name = (char *) xmalloc (len);
-	(void) snprintf (lp->ln_name, len, "%s%s", dst_orig, name + src_len);
+	xasprintf(&lp->ln_name, "%s%s", dst_orig, name + strlen(src_orig));
 	lp->ln_next = links;
 	links = lp;
 
@@ -312,51 +307,43 @@ static int copy_tree_impl (const struct path_info *src, const struct path_info *
 		set_orig = true;
 	}
 	while ((0 == err) && (ent = readdir (dir)) != NULL) {
+		char              *src_name = NULL;
+		char              *dst_name;
+		struct path_info  src_entry, dst_entry;
 		/*
 		 * Skip the "." and ".." entries
 		 */
-		if ((strcmp (ent->d_name, ".") != 0) &&
-		    (strcmp (ent->d_name, "..") != 0)) {
-			char *src_name;
-			char *dst_name;
-			size_t src_len = strlen (ent->d_name) + 2;
-			size_t dst_len = strlen (ent->d_name) + 2;
-			src_len += strlen (src->full_path);
-			dst_len += strlen (dst->full_path);
-
-			src_name = (char *) malloc (src_len);
-			dst_name = (char *) malloc (dst_len);
-
-			if ((NULL == src_name) || (NULL == dst_name)) {
-				err = -1;
-			} else {
-				/*
-				 * Build the filename for both the source and
-				 * the destination files.
-				 */
-				struct path_info src_entry, dst_entry;
-
-				(void) snprintf (src_name, src_len, "%s/%s",
-				                 src->full_path, ent->d_name);
-				(void) snprintf (dst_name, dst_len, "%s/%s",
-				                 dst->full_path, ent->d_name);
-
-				src_entry.full_path = src_name;
-				src_entry.dirfd = dirfd(dir);
-				src_entry.name = ent->d_name;
-
-				dst_entry.full_path = dst_name;
-				dst_entry.dirfd = dst_fd;
-				dst_entry.name = ent->d_name;
-
-				err = copy_entry (&src_entry, &dst_entry,
-				                  reset_selinux,
-				                  old_uid, new_uid,
-				                  old_gid, new_gid);
-			}
-			free (src_name);
-			free (dst_name);
+		if (strcmp(ent->d_name, ".") == 0 ||
+		    strcmp(ent->d_name, "..") == 0)
+		{
+			continue;
+		}
+
+		if (asprintf(&src_name, "%s/%s", src->full_path, ent->d_name) == -1)
+		{
+			err = -1;
+			continue;
+		}
+		if (asprintf(&dst_name, "%s/%s", dst->full_path, ent->d_name) == -1)
+		{
+			err = -1;
+			goto skip;
 		}
+
+		src_entry.full_path = src_name;
+		src_entry.dirfd = dirfd(dir);
+		src_entry.name = ent->d_name;
+
+		dst_entry.full_path = dst_name;
+		dst_entry.dirfd = dst_fd;
+		dst_entry.name = ent->d_name;
+
+		err = copy_entry(&src_entry, &dst_entry, reset_selinux,
+				 old_uid, new_uid, old_gid, new_gid);
+
+		free(dst_name);
+skip:
+		free(src_name);
 	}
 	(void) closedir (dir);
 	(void) close (dst_fd);
@@ -413,78 +400,70 @@ static int copy_entry (const struct path_info *src, const struct path_info *dst,
 {
 	int err = 0;
 	struct stat sb;
+	struct stat tmp_sb;
 	struct link_name *lp;
 	struct timespec mt[2];
 
 	if (fstatat(src->dirfd, src->name, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
 		/* If we cannot stat the file, do not care. */
-	} else {
-#ifdef HAVE_STRUCT_STAT_ST_ATIM
-		mt[0].tv_sec  = sb.st_atim.tv_sec;
-		mt[0].tv_nsec = sb.st_atim.tv_nsec;
-#else				/* !HAVE_STRUCT_STAT_ST_ATIM */
-		mt[0].tv_sec  = sb.st_atime;
-# ifdef HAVE_STRUCT_STAT_ST_ATIMENSEC
-		mt[0].tv_nsec = sb.st_atimensec;
-# else				/* !HAVE_STRUCT_STAT_ST_ATIMENSEC */
-		mt[0].tv_nsec = 0;
-# endif				/* !HAVE_STRUCT_STAT_ST_ATIMENSEC */
-#endif				/* !HAVE_STRUCT_STAT_ST_ATIM */
-
-#ifdef HAVE_STRUCT_STAT_ST_MTIM
-		mt[1].tv_sec  = sb.st_mtim.tv_sec;
-		mt[1].tv_nsec = sb.st_mtim.tv_nsec;
-#else				/* !HAVE_STRUCT_STAT_ST_MTIM */
-		mt[1].tv_sec  = sb.st_mtime;
-# ifdef HAVE_STRUCT_STAT_ST_MTIMENSEC
-		mt[1].tv_nsec = sb.st_mtimensec;
-# else				/* !HAVE_STRUCT_STAT_ST_MTIMENSEC */
-		mt[1].tv_nsec = 0;
-# endif				/* !HAVE_STRUCT_STAT_ST_MTIMENSEC */
-#endif				/* !HAVE_STRUCT_STAT_ST_MTIM */
-
-		if (S_ISDIR (sb.st_mode)) {
-			err = copy_dir (src, dst, reset_selinux, &sb, mt,
-			                old_uid, new_uid, old_gid, new_gid);
-		}
+		return 0;
+	}
 
-		/*
-		 * Copy any symbolic links
-		 */
+	mt[0].tv_sec  = sb.st_atim.tv_sec;
+	mt[0].tv_nsec = sb.st_atim.tv_nsec;
 
-		else if (S_ISLNK (sb.st_mode)) {
-			err = copy_symlink (src, dst, reset_selinux, &sb, mt,
-			                    old_uid, new_uid, old_gid, new_gid);
-		}
+	mt[1].tv_sec  = sb.st_mtim.tv_sec;
+	mt[1].tv_nsec = sb.st_mtim.tv_nsec;
 
-		/*
-		 * See if this is a previously copied link
-		 */
+	if (S_ISDIR (sb.st_mode)) {
+		err = copy_dir (src, dst, reset_selinux, &sb, mt,
+				old_uid, new_uid, old_gid, new_gid);
+	}
 
-		else if ((lp = check_link (src->full_path, &sb)) != NULL) {
-			err = copy_hardlink (dst, reset_selinux, lp);
-		}
+	/*
+	* If the destination already exists do nothing.
+	* This is after the copy_dir above to still iterate into subdirectories.
+	*/
+	if (fstatat(dst->dirfd, dst->name, &tmp_sb, AT_SYMLINK_NOFOLLOW) != -1) {
+		return err;
+	}
 
-		/*
-		 * Deal with FIFOs and special files.  The user really
-		 * shouldn't have any of these, but it seems like it
-		 * would be nice to copy everything ...
-		 */
+	/*
+	* Copy any symbolic links
+	*/
 
-		else if (!S_ISREG (sb.st_mode)) {
-			err = copy_special (src, dst, reset_selinux, &sb, mt,
-			                    old_uid, new_uid, old_gid, new_gid);
-		}
+	else if (S_ISLNK (sb.st_mode)) {
+		err = copy_symlink (src, dst, reset_selinux, &sb, mt,
+				    old_uid, new_uid, old_gid, new_gid);
+	}
 
-		/*
-		 * Create the new file and copy the contents.  The new
-		 * file will be owned by the provided UID and GID values.
-		 */
+	/*
+	* See if this is a previously copied link
+	*/
 
-		else {
-			err = copy_file (src, dst, reset_selinux, &sb, mt,
-			                 old_uid, new_uid, old_gid, new_gid);
-		}
+	else if ((lp = check_link (src->full_path, &sb)) != NULL) {
+		err = copy_hardlink (dst, reset_selinux, lp);
+	}
+
+	/*
+	* Deal with FIFOs and special files.  The user really
+	* shouldn't have any of these, but it seems like it
+	* would be nice to copy everything ...
+	*/
+
+	else if (!S_ISREG (sb.st_mode)) {
+		err = copy_special (src, dst, reset_selinux, &sb, mt,
+				    old_uid, new_uid, old_gid, new_gid);
+	}
+
+	/*
+	* Create the new file and copy the contents.  The new
+	* file will be owned by the provided UID and GID values.
+	*/
+
+	else {
+		err = copy_file (src, dst, reset_selinux, &sb, mt,
+				 old_uid, new_uid, old_gid, new_gid);
 	}
 
 	return err;
@@ -507,6 +486,7 @@ static int copy_dir (const struct path_info *src, const struct path_info *dst,
                      gid_t old_gid, gid_t new_gid)
 {
 	int err = 0;
+	struct stat dst_sb;
 
 	/*
 	 * Create a new target directory, make it owned by
@@ -518,6 +498,15 @@ static int copy_dir (const struct path_info *src, const struct path_info *dst,
 		return -1;
 	}
 #endif				/* WITH_SELINUX */
+        /*
+         * If the destination is already a directory, don't change it
+         * but copy into it (recursively).
+        */
+        if (fstatat(dst->dirfd, dst->name, &dst_sb, AT_SYMLINK_NOFOLLOW) == 0 && S_ISDIR(dst_sb.st_mode)) {
+            return (copy_tree_impl (src, dst, false, reset_selinux,
+                           old_uid, new_uid, old_gid, new_gid) != 0);
+        }
+
 	if (   (mkdirat (dst->dirfd, dst->name, 0700) != 0)
 	    || (chownat_if_needed (dst, statp,
 	                         old_uid, new_uid, old_gid, new_gid) != 0)
@@ -559,7 +548,7 @@ static /*@null@*/char *readlink_malloc (const char *filename)
 
 	while (true) {
 		ssize_t nchars;
-		char *buffer = (char *) malloc (size);
+		char *buffer = MALLOC(size, char);
 		if (NULL == buffer) {
 			return NULL;
 		}
@@ -594,7 +583,7 @@ static /*@null@*/char *readlink_malloc (const char *filename)
  *	Return 0 on success, -1 on error.
  */
 static int copy_symlink (const struct path_info *src, const struct path_info *dst,
-                         unused bool reset_selinux,
+                         MAYBE_UNUSED bool reset_selinux,
                          const struct stat *statp, const struct timespec mt[],
                          uid_t old_uid, uid_t new_uid,
                          gid_t old_gid, gid_t new_gid)
@@ -622,13 +611,11 @@ static int copy_symlink (const struct path_info *src, const struct path_info *ds
 	 * create a link to the corresponding entry in the dst_orig
 	 * directory.
 	 */
-	if (strncmp (oldlink, src_orig, strlen (src_orig)) == 0) {
-		size_t len = strlen (dst_orig) + strlen (oldlink) - strlen (src_orig) + 1;
-		char *dummy = (char *) xmalloc (len);
-		(void) snprintf (dummy, len, "%s%s",
-		                 dst_orig,
-		                 oldlink + strlen (src_orig));
-		free (oldlink);
+	if (strncmp(oldlink, src_orig, strlen(src_orig)) == 0) {
+		char  *dummy;
+
+		xasprintf(&dummy, "%s%s", dst_orig, oldlink + strlen(src_orig));
+		free(oldlink);
 		oldlink = dummy;
 	}
 
@@ -668,7 +655,7 @@ static int copy_symlink (const struct path_info *src, const struct path_info *ds
  *	Return 0 on success, -1 on error.
  */
 static int copy_hardlink (const struct path_info *dst,
-                          unused bool reset_selinux,
+                          MAYBE_UNUSED bool reset_selinux,
                           struct link_name *lp)
 {
 	/* FIXME: selinux, ACL, Extended Attributes needed? */
@@ -687,6 +674,7 @@ static int copy_hardlink (const struct path_info *dst,
 	return 0;
 }
 
+
 /*
  * copy_special - copy a special file
  *
@@ -697,29 +685,33 @@ static int copy_hardlink (const struct path_info *dst,
  *
  *	Return 0 on success, -1 on error.
  */
-static int copy_special (const struct path_info *src, const struct path_info *dst,
-                         bool reset_selinux,
-                         const struct stat *statp, const struct timespec mt[],
-                         uid_t old_uid, uid_t new_uid,
-                         gid_t old_gid, gid_t new_gid)
+static int
+copy_special(const struct path_info *src, const struct path_info *dst,
+             bool reset_selinux,
+             const struct stat *statp, const struct timespec mt[],
+             uid_t old_uid, uid_t new_uid,
+             gid_t old_gid, gid_t new_gid)
 {
-	int err = 0;
+#if defined(WITH_SELINUX)
+	if (set_selinux_file_context(dst->full_path, statp->st_mode & S_IFMT) != 0)
+		return -1;
+#endif
 
-#ifdef WITH_SELINUX
-	if (set_selinux_file_context (dst->full_path, statp->st_mode & S_IFMT) != 0) {
+	if (mknodat(dst->dirfd, dst->name, statp->st_mode & ~07777U, statp->st_rdev) == -1)
 		return -1;
-	}
-#endif				/* WITH_SELINUX */
 
-	if (   (mknodat (dst->dirfd, dst->name, statp->st_mode & ~07777U, statp->st_rdev) != 0)
-	    || (chownat_if_needed (dst, statp,
-	                         old_uid, new_uid, old_gid, new_gid) != 0)
-	    || (fchmodat (dst->dirfd, dst->name, statp->st_mode & 07777, AT_SYMLINK_NOFOLLOW) != 0)
-#ifdef WITH_ACL
-	    || (   (perm_copy_path (src, dst, &ctx) != 0)
-	        && (errno != 0))
-#endif				/* WITH_ACL */
-#ifdef WITH_ATTR
+	if (chownat_if_needed(dst, statp, old_uid, new_uid, old_gid, new_gid) == -1)
+		return -1;
+
+	if (fchmodat(dst->dirfd, dst->name, statp->st_mode & 07777, AT_SYMLINK_NOFOLLOW) == -1)
+		return -1;
+
+#if defined(WITH_ACL)
+	if (perm_copy_path(src, dst, &ctx) == -1 && errno != 0)
+		return -1;
+#endif
+
+#if defined(WITH_ATTR)
 	/*
 	 * If the third parameter is NULL, all extended attributes
 	 * except those that define Access Control Lists are copied.
@@ -727,51 +719,16 @@ static int copy_special (const struct path_info *src, const struct path_info *ds
 	 * file systems with and without ACL support needs some
 	 * additional logic so that no unexpected permissions result.
 	 */
-	    || (   !reset_selinux
-	        && (attr_copy_path (src, dst, NULL, &ctx) != 0)
-	        && (errno != 0))
-#endif				/* WITH_ATTR */
-		|| (utimensat (dst->dirfd, dst->name, mt, AT_SYMLINK_NOFOLLOW) != 0)) {
-		err = -1;
+	if (!reset_selinux) {
+		if (attr_copy_path(src, dst, NULL, &ctx) == -1 && errno != 0)
+			return -1;
 	}
+#endif
 
-	return err;
-}
-
-/*
- * full_write - write entire buffer
- *
- * Write up to count bytes from the buffer starting at buf to the
- * file referred to by the file descriptor fd.
- * Retry in case of a short write.
- *
- * Returns the number of bytes written on success, -1 on error.
- */
-static ssize_t full_write(int fd, const void *buf, size_t count) {
-	ssize_t written = 0;
-
-	while (count > 0) {
-		ssize_t res;
-
-		res = write(fd, buf, count);
-		if (res < 0) {
-			if (errno == EINTR) {
-				continue;
-			}
-
-			return res;
-		}
-
-		if (res == 0) {
-			break;
-		}
-
-		written += res;
-		buf = (const unsigned char*)buf + res;
-		count -= (size_t)res;
-	}
+	if (utimensat(dst->dirfd, dst->name, mt, AT_SYMLINK_NOFOLLOW) == -1)
+		return -1;
 
-	return written;
+	return 0;
 }
 
 /*
@@ -850,7 +807,7 @@ static int copy_file (const struct path_info *src, const struct path_info *dst,
 			break;
 		}
 
-		if (full_write (ofd, buf, (size_t)cnt) < 0) {
+		if (write_full(ofd, buf, cnt) == -1) {
 			(void) close (ofd);
 			(void) close (ifd);
 			return -1;
@@ -858,7 +815,7 @@ static int copy_file (const struct path_info *src, const struct path_info *dst,
 	}
 
 	(void) close (ifd);
-	if (close (ofd) != 0) {
+	if (close (ofd) != 0 && errno != EINTR) {
 		return -1;
 	}
 
diff --git a/lib/csrand.c b/lib/csrand.c
new file mode 100644
index 0000000..8ded343
--- /dev/null
+++ b/lib/csrand.c
@@ -0,0 +1,150 @@
+/*
+ * SPDX-FileCopyrightText:  Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <limits.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#if HAVE_SYS_RANDOM_H
+#include <sys/random.h>
+#endif
+#include "bit.h"
+#include "defines.h"
+#include "prototypes.h"
+#include "shadowlog.h"
+#include "sizeof.h"
+
+
+static uint32_t csrand32(void);
+static uint32_t csrand_uniform32(uint32_t n);
+static unsigned long csrand_uniform_slow(unsigned long n);
+
+
+/*
+ * Return a uniformly-distributed CS random u_long value.
+ */
+unsigned long
+csrand(void)
+{
+	FILE           *fp;
+	unsigned long  r;
+
+#ifdef HAVE_GETENTROPY
+	/* getentropy may exist but lack kernel support.  */
+	if (getentropy(&r, sizeof(r)) == 0)
+		return r;
+#endif
+
+#ifdef HAVE_GETRANDOM
+	/* Likewise getrandom.  */
+	if (getrandom(&r, sizeof(r), 0) == sizeof(r))
+		return r;
+#endif
+
+#ifdef HAVE_ARC4RANDOM_BUF
+	/* arc4random_buf can never fail.  */
+	arc4random_buf(&r, sizeof(r));
+	return r;
+#endif
+
+	/* Use /dev/urandom as a last resort.  */
+	fp = fopen("/dev/urandom", "r");
+	if (NULL == fp) {
+		goto fail;
+	}
+
+	if (fread(&r, sizeof(r), 1, fp) != 1) {
+		fclose(fp);
+		goto fail;
+	}
+
+	fclose(fp);
+	return r;
+
+fail:
+	fprintf(log_get_logfd(), _("Unable to obtain random bytes.\n"));
+	exit(1);
+}
+
+
+/*
+ * Return a uniformly-distributed CS random value in the interval [0, n-1].
+ */
+unsigned long
+csrand_uniform(unsigned long n)
+{
+	if (n == 0 || n > UINT32_MAX)
+		return csrand_uniform_slow(n);
+
+	return csrand_uniform32(n);
+}
+
+
+/*
+ * Return a uniformly-distributed CS random value in the interval [min, max].
+ */
+unsigned long
+csrand_interval(unsigned long min, unsigned long max)
+{
+	return csrand_uniform(max - min + 1) + min;
+}
+
+
+static uint32_t
+csrand32(void)
+{
+	return csrand();
+}
+
+
+/*
+ * Fast Random Integer Generation in an Interval
+ * ACM Transactions on Modeling and Computer Simulation 29 (1), 2019
+ * <https://arxiv.org/abs/1805.10941>
+ */
+static uint32_t
+csrand_uniform32(uint32_t n)
+{
+	uint32_t  bound, rem;
+	uint64_t  r, mult;
+
+	if (n == 0)
+		return csrand32();
+
+	bound = -n % n;  // analogous to `2^32 % n`, since `x % y == (x-y) % y`
+
+	do {
+		r = csrand32();
+		mult = r * n;
+		rem = mult;  // analogous to `mult % 2^32`
+	} while (rem < bound);  // p = (2^32 % n) / 2^32;  W.C.: n=2^31+1, p=0.5
+
+	r = mult >> WIDTHOF(n);  // analogous to `mult / 2^32`
+
+	return r;
+}
+
+
+static unsigned long
+csrand_uniform_slow(unsigned long n)
+{
+	unsigned long  r, max, mask;
+
+	max = n - 1;
+	mask = bit_ceil_wrapul(n) - 1;
+
+	do {
+		r = csrand();
+		r &= mask;  // optimization
+	} while (r > max);  // p = ((mask+1) % n) / (mask+1);  W.C.: p=0.5
+
+	return r;
+}
diff --git a/lib/defines.h b/lib/defines.h
index d01f691..8c55ddd 100644
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -6,41 +6,8 @@
 
 #include "config.h"
 
-#if HAVE_STDBOOL_H
-# include <stdbool.h>
-#else
-# if ! HAVE__BOOL
-#  ifdef __cplusplus
-typedef bool _Bool;
-#  else
-typedef unsigned char _Bool;
-#  endif
-# endif
-# define bool _Bool
-# define false (0)
-# define true  (1)
-# define __bool_true_false_are_defined 1
-#endif
-
-/* Take care of NLS matters.  */
-#ifdef S_SPLINT_S
-extern char *setlocale(int categories, const char *locale);
-# define LC_ALL		(6)
-extern char * bindtextdomain (const char * domainname, const char * dirname);
-extern char * textdomain (const char * domainname);
-# define _(Text) Text
-# define ngettext(Msgid1, Msgid2, N) \
-    ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
-#else
-#ifdef HAVE_LOCALE_H
-# include <locale.h>
-#else
-# undef setlocale
-# define setlocale(category, locale)	(NULL)
-# ifndef LC_ALL
-#  define LC_ALL	6
-# endif
-#endif
+#include <stdbool.h>
+#include <locale.h>
 
 #define gettext_noop(String) (String)
 /* #define gettext_def(String) "#define String" */
@@ -57,22 +24,18 @@ extern char * textdomain (const char * domainname);
 # define ngettext(Msgid1, Msgid2, N) \
     ((N) == 1 ? (const char *) (Msgid1) : (const char *) (Msgid2))
 #endif
-#endif
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#if HAVE_ERRNO_H
-# include <errno.h>
-#endif
+#include <errno.h>
 
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 
-#if HAVE_UNISTD_H
-# include <unistd.h>
-#endif
+#include <unistd.h>
 
 /*
  * crypt(3), crypt_gensalt(3), and their
@@ -85,22 +48,6 @@ extern char * textdomain (const char * domainname);
 #include <sys/time.h>
 #include <time.h>
 
-#ifdef HAVE_MEMSET_S
-# define memzero(ptr, size) memset_s((ptr), 0, (size))
-#elif defined HAVE_EXPLICIT_BZERO	/* !HAVE_MEMSET_S */
-# define memzero(ptr, size) explicit_bzero((ptr), (size))
-#else					/* !HAVE_MEMSET_S && HAVE_EXPLICIT_BZERO */
-static inline void memzero(void *ptr, size_t size)
-{
-	volatile unsigned char * volatile p = ptr;
-	while (size--) {
-		*p++ = '\0';
-	}
-}
-#endif					/* !HAVE_MEMSET_S && !HAVE_EXPLICIT_BZERO */
-
-#define strzero(s) memzero(s, strlen(s))	/* warning: evaluates twice */
-
 #include <dirent.h>
 
 /*
@@ -123,7 +70,6 @@ static inline void memzero(void *ptr, size_t size)
 #endif
 #endif
 
-#ifdef USE_SYSLOG
 #include <syslog.h>
 
 #ifndef LOG_WARN
@@ -170,14 +116,6 @@ static inline void memzero(void *ptr, size_t size)
 #define SYSLOG(x) syslog x
 #endif				/* !ENABLE_NLS */
 
-#else				/* !USE_SYSLOG */
-
-#define SYSLOG(x)		/* empty */
-#define openlog(a,b,c)		/* empty */
-#define closelog()		/* empty */
-
-#endif				/* !USE_SYSLOG */
-
 /* The default syslog settings can now be changed here,
    in just one place.  */
 
@@ -192,63 +130,25 @@ static inline void memzero(void *ptr, size_t size)
 
 #define OPENLOG(progname) openlog(progname, SYSLOG_OPTIONS, SYSLOG_FACILITY)
 
-#ifndef F_OK
-# define F_OK 0
-# define X_OK 1
-# define W_OK 2
-# define R_OK 4
-#endif
-
-#ifndef SEEK_SET
-# define SEEK_SET 0
-# define SEEK_CUR 1
-# define SEEK_END 2
-#endif
-
-#if HAVE_TERMIOS_H
-# include <termios.h>
-# define STTY(fd, termio) tcsetattr(fd, TCSANOW, termio)
-# define GTTY(fd, termio) tcgetattr(fd, termio)
-# define TERMIO struct termios
-# define USE_TERMIOS
-#else				/* assumed HAVE_TERMIO_H */
-# include <sys/ioctl.h>
-# include <termio.h>
-# define STTY(fd, termio) ioctl(fd, TCSETA, termio)
-# define GTTY(fd, termio) ioctl(fd, TCGETA, termio)
-# define TEMRIO struct termio
-# define USE_TERMIO
-#endif
+#include <termios.h>
+#define STTY(fd, termio) tcsetattr(fd, TCSANOW, termio)
+#define GTTY(fd, termio) tcgetattr(fd, termio)
+#define TERMIO struct termios
 
 /*
  * Password aging constants
  *
  * DAY - seconds / day
  * WEEK - seconds / week
- * SCALE - seconds / aging unit
  */
 
 /* Solaris defines this in shadow.h */
 #ifndef DAY
-#define DAY (24L*3600L)
+#define DAY  ((time_t) 24 * 3600)
 #endif
 
 #define WEEK (7*DAY)
 
-#ifdef ITI_AGING
-#define SCALE 1
-#else
-#define SCALE DAY
-#endif
-
-/* Copy string pointed by B to array A with size checking.  It was originally
-   in lmain.c but is _very_ useful elsewhere.  Some setuid root programs with
-   very sloppy coding used to assume that BUFSIZ will always be enough...  */
-
-					/* danger - side effects */
-#define STRFCPY(A,B) \
-	(strncpy((A), (B), sizeof(A) - 1), (A)[sizeof(A) - 1] = '\0')
-
 #ifndef PASSWD_FILE
 #define PASSWD_FILE "/etc/passwd"
 #endif
@@ -261,22 +161,18 @@ static inline void memzero(void *ptr, size_t size)
 #define SHADOW_FILE "/etc/shadow"
 #endif
 
-#ifdef SHADOWGRP
-#ifndef SGROUP_FILE
-#define SGROUP_FILE "/etc/gshadow"
-#endif
+#ifndef SUBUID_FILE
+#define SUBUID_FILE "/etc/subuid"
 #endif
 
-#ifndef NULL
-#define NULL ((void *) 0)
+#ifndef SUBGID_FILE
+#define SUBGID_FILE "/etc/subgid"
 #endif
 
-#ifdef sun			/* hacks for compiling on SunOS */
-# ifndef SOLARIS
-extern int fputs ();
-extern char *strdup ();
-extern char *strerror ();
-# endif
+#ifdef SHADOWGRP
+#ifndef SGROUP_FILE
+#define SGROUP_FILE "/etc/gshadow"
+#endif
 #endif
 
 /*
@@ -288,45 +184,16 @@ extern char *strerror ();
 #define SHADOW_PASSWD_STRING "x"
 #endif
 
-#define SHADOW_SP_FLAG_UNSET ((unsigned long int)-1)
+#define SHADOW_SP_FLAG_UNSET ((unsigned long)-1)
 
 #ifdef WITH_AUDIT
-#ifdef __u8			/* in case we use pam < 0.80 */
+/* in case we use pam < 0.80 */
 #undef __u8
-#endif
-#ifdef __u32
 #undef __u32
-#endif
 
 #include <libaudit.h>
 #endif
 
-/* To be used for verified unused parameters */
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
-# define unused __attribute__((unused))
-# define format_attr(type, index, check) __attribute__((format (type, index, check)))
-#else
-# define unused
-# define format_attr(type, index, check)
-#endif
-
-/* Maximum length of usernames */
-#ifdef HAVE_UTMPX_H
-# include <utmpx.h>
-# define USER_NAME_MAX_LENGTH (sizeof (((struct utmpx *)NULL)->ut_user))
-#else
-# include <utmp.h>
-# ifdef HAVE_STRUCT_UTMP_UT_USER
-#  define USER_NAME_MAX_LENGTH (sizeof (((struct utmp *)NULL)->ut_user))
-# else
-#  ifdef HAVE_STRUCT_UTMP_UT_NAME
-#   define USER_NAME_MAX_LENGTH (sizeof (((struct utmp *)NULL)->ut_name))
-#  else
-#   define USER_NAME_MAX_LENGTH 32
-#  endif
-# endif
-#endif
-
 /* Maximum length of passwd entry */
 #define PASSWD_ENTRY_MAX_LENGTH 32768
 
@@ -336,4 +203,14 @@ extern char *strerror ();
 #  define shadow_getenv(name) getenv(name)
 #endif
 
+/*
+ * Maximum password length
+ *
+ * Consider that there is also limit in PAM (PAM_MAX_RESP_SIZE)
+ * currently set to 512.
+ */
+#if !defined(PASS_MAX)
+#define PASS_MAX  BUFSIZ - 1
+#endif
+
 #endif				/* _DEFINES_H_ */
diff --git a/libmisc/env.c b/lib/env.c
index fc6dbce..9b5fd32 100644
--- a/libmisc/env.c
+++ b/lib/env.c
@@ -15,9 +15,14 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+
+#include "alloc.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "shadowlog.h"
+#include "string/sprintf.h"
+
+
 /*
  * NEWENVP_STEP must be a power of two.  This is the number
  * of (char *) pointers to allocate at a time, to avoid using
@@ -26,7 +31,6 @@
 #define NEWENVP_STEP 16
 size_t newenvc = 0;
 /*@null@*/char **newenvp = NULL;
-extern char **environ;
 
 static const char *const forbid[] = {
 	"_RLD_=",
@@ -42,7 +46,7 @@ static const char *const forbid[] = {
 	"PATH=",
 	"SHELL=",
 	"SHLIB_PATH=",
-	(char *) 0
+	NULL
 };
 
 /* these are allowed, but with no slashes inside
@@ -51,7 +55,7 @@ static const char *const noslash[] = {
 	"LANG=",
 	"LANGUAGE=",
 	"LC_",			/* anything with the LC_ prefix */
-	(char *) 0
+	NULL
 };
 
 /*
@@ -59,23 +63,18 @@ static const char *const noslash[] = {
  */
 void initenv (void)
 {
-	newenvp = (char **) xmalloc (NEWENVP_STEP * sizeof (char *));
+	newenvp = XMALLOC(NEWENVP_STEP, char *);
 	*newenvp = NULL;
 }
 
 
 void addenv (const char *string, /*@null@*/const char *value)
 {
-	char *cp, *newstring;
-	size_t i;
-	size_t n;
+	char    *cp, *newstring;
+	size_t  i, n;
 
 	if (NULL != value) {
-		size_t len = strlen (string) + strlen (value) + 2;
-		int wlen;
-		newstring = xmalloc (len);
-		wlen = snprintf (newstring, len, "%s=%s", string, value);
-		assert (wlen == (int) len -1);
+		xasprintf(&newstring, "%s=%s", string, value);
 	} else {
 		newstring = xstrdup (string);
 	}
@@ -87,7 +86,7 @@ void addenv (const char *string, /*@null@*/const char *value)
 
 	cp = strchr (newstring, '=');
 	if (NULL == cp) {
-		free (newstring);
+		free(newstring);
 		return;
 	}
 
@@ -104,7 +103,7 @@ void addenv (const char *string, /*@null@*/const char *value)
 	}
 
 	if (i < newenvc) {
-		free (newenvp[i]);
+		free(newenvp[i]);
 		newenvp[i] = newstring;
 		return;
 	}
@@ -127,32 +126,19 @@ void addenv (const char *string, /*@null@*/const char *value)
 	 */
 
 	if ((newenvc & (NEWENVP_STEP - 1)) == 0) {
-		char **__newenvp;
-		size_t newsize;
+		bool  update_environ;
+
+		update_environ = (environ == newenvp);
+
+		newenvp = XREALLOC(newenvp, newenvc + NEWENVP_STEP, char *);
 
 		/*
-		 * If the resize operation succeeds we can
-		 * happily go on, else print a message.
+		 * If this is our current environment, update
+		 * environ so that it doesn't point to some
+		 * free memory area (realloc() could move it).
 		 */
-
-		newsize = (newenvc + NEWENVP_STEP) * sizeof (char *);
-		__newenvp = (char **) realloc (newenvp, newsize);
-
-		if (NULL != __newenvp) {
-			/*
-			 * If this is our current environment, update
-			 * environ so that it doesn't point to some
-			 * free memory area (realloc() could move it).
-			 */
-			if (environ == newenvp) {
-				environ = __newenvp;
-			}
-			newenvp = __newenvp;
-		} else {
-			(void) fputs (_("Environment overflow\n"), log_get_logfd());
-			newenvc--;
-			free (newenvp[newenvc]);
-		}
+		if (update_environ)
+			environ = newenvp;
 	}
 
 	/*
@@ -168,9 +154,9 @@ void addenv (const char *string, /*@null@*/const char *value)
  */
 void set_env (int argc, char *const *argv)
 {
-	int noname = 1;
-	char variable[1024];
-	char *cp;
+	int   noname = 1;
+	char  variable[1024];
+	char  *cp;
 
 	for (; argc > 0; argc--, argv++) {
 		if (strlen (*argv) >= sizeof variable) {
@@ -179,9 +165,7 @@ void set_env (int argc, char *const *argv)
 
 		cp = strchr (*argv, '=');
 		if (NULL == cp) {
-			int wlen;
-			wlen = snprintf (variable, sizeof variable, "L%d", noname);
-			assert (wlen < (int) sizeof(variable));
+			assert(SNPRINTF(variable, "L%d", noname) != -1);
 			noname++;
 			addenv (variable, *argv);
 		} else {
@@ -194,8 +178,7 @@ void set_env (int argc, char *const *argv)
 			}
 
 			if (NULL != *p) {
-				strncpy (variable, *argv, (size_t)(cp - *argv));
-				variable[cp - *argv] = '\0';
+				stpcpy(mempcpy(variable, *argv, (size_t)(cp - *argv)), "");
 				printf (_("You may not change $%s\n"),
 					variable);
 				continue;
diff --git a/libmisc/failure.c b/lib/failure.c
index 1aab299..e42e710 100644
--- a/libmisc/failure.c
+++ b/lib/failure.c
@@ -14,10 +14,16 @@
 #include <fcntl.h>
 #include <stdio.h>
 #include <unistd.h>
+
 #include "defines.h"
 #include "faillog.h"
-#include "getdef.h"
 #include "failure.h"
+#include "memzero.h"
+#include "prototypes.h"
+#include "string/strftime.h"
+#include "string/strtcpy.h"
+
+
 #define	YEAR	(365L*DAY)
 /*
  * failure - make failure entry
@@ -41,7 +47,7 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 	fd = open (FAILLOG_FILE, O_RDWR);
 	if (fd < 0) {
 		SYSLOG ((LOG_WARN,
-		         "Can't write faillog entry for UID %lu in %s.",
+		         "Can't write faillog entry for UID %lu in %s: %m",
 		         (unsigned long) uid, FAILLOG_FILE));
 		return;
 	}
@@ -53,7 +59,7 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 	 */
 
 	if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-	    || (read (fd, (char *) fl, sizeof *fl) != (ssize_t) sizeof *fl)) {
+	    || (read (fd, fl, sizeof *fl) != (ssize_t) sizeof *fl)) {
 		/* This is not necessarily a failure. The file is
 		 * initially zero length.
 		 *
@@ -75,7 +81,7 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 		fl->fail_cnt++;
 	}
 
-	strncpy (fl->fail_line, tty, sizeof (fl->fail_line) - 1);
+	STRTCPY(fl->fail_line, tty);
 	(void) time (&fl->fail_time);
 
 	/*
@@ -86,13 +92,26 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 	 */
 
 	if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-	    || (write (fd, (char *) fl, sizeof *fl) != (ssize_t) sizeof *fl)
-	    || (close (fd) != 0)) {
-		SYSLOG ((LOG_WARN,
-		         "Can't write faillog entry for UID %lu in %s.",
-		         (unsigned long) uid, FAILLOG_FILE));
+	    || (write_full(fd, fl, sizeof *fl) == -1)) {
+		goto err_write;
+	}
+
+	if (close (fd) != 0 && errno != EINTR) {
+		goto err_close;
+	}
+
+	return;
+
+err_write:
+	{
+		int saved_errno = errno;
 		(void) close (fd);
+		errno = saved_errno;
 	}
+err_close:
+	SYSLOG ((LOG_WARN,
+	         "Can't write faillog entry for UID %lu to %s: %m",
+	         (unsigned long) uid, FAILLOG_FILE));
 }
 
 static bool too_many_failures (const struct faillog *fl)
@@ -144,7 +163,7 @@ int failcheck (uid_t uid, struct faillog *fl, bool failed)
 	fd = open (FAILLOG_FILE, failed?O_RDONLY:O_RDWR);
 	if (fd < 0) {
 		SYSLOG ((LOG_WARN,
-		         "Can't open the faillog file (%s) to check UID %lu. "
+		         "Can't open the faillog file (%s) to check UID %lu: %m; "
 		         "User access authorized.",
 		         FAILLOG_FILE, (unsigned long) uid));
 		return 1;
@@ -163,7 +182,7 @@ int failcheck (uid_t uid, struct faillog *fl, bool failed)
 	 */
 
 	if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-	    || (read (fd, (char *) fl, sizeof *fl) != (ssize_t) sizeof *fl)) {
+	    || (read (fd, fl, sizeof *fl) != (ssize_t) sizeof *fl)) {
 		(void) close (fd);
 		return 1;
 	}
@@ -185,18 +204,30 @@ int failcheck (uid_t uid, struct faillog *fl, bool failed)
 		fail.fail_cnt = 0;
 
 		if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-		    || (write (fd, (const void *) &fail, sizeof fail) != (ssize_t) sizeof fail)
-		    || (close (fd) != 0)) {
-			SYSLOG ((LOG_WARN,
-			         "Can't reset faillog entry for UID %lu in %s.",
-			         (unsigned long) uid, FAILLOG_FILE));
-			(void) close (fd);
+		    || (write_full(fd, &fail, sizeof fail) == -1)) {
+			    goto err_write;
+		}
+
+		if (close (fd) != 0 && errno != EINTR) {
+			goto err_close;
 		}
 	} else {
 		(void) close (fd);
 	}
 
 	return 1;
+
+err_write:
+	{
+		int saved_errno = errno;
+		(void) close (fd);
+		errno = saved_errno;
+	}
+err_close:
+	SYSLOG ((LOG_WARN,
+	         "Can't reset faillog entry for UID %lu in %s: %m",
+	         (unsigned long) uid, FAILLOG_FILE));
+	return 1;
 }
 
 /*
@@ -223,7 +254,7 @@ void failprint (const struct faillog *fail)
 	/*
 	 * Print all information we have.
 	 */
-	(void) strftime (lasttimeb, sizeof lasttimeb, "%c", tp);
+	STRFTIME(lasttimeb, "%c", tp);
 
 	/*@-formatconst@*/
 	(void) printf (ngettext ("%d failure since last login.\n"
@@ -234,62 +265,3 @@ void failprint (const struct faillog *fail)
 	               fail->fail_cnt, lasttime, fail->fail_line);
 	/*@=formatconst@*/
 }
-
-/*
- * failtmp - update the cumulative failure log
- *
- *	failtmp updates the (struct utmp) formatted failure log which
- *	maintains a record of all login failures.
- */
-
-void failtmp (const char *username,
-#ifdef USE_UTMPX
-		     const struct utmpx *failent
-#else				/* !USE_UTMPX */
-		     const struct utmp *failent
-#endif				/* !USE_UTMPX */
-    )
-{
-	const char *ftmp;
-	int fd;
-
-	/*
-	 * Get the name of the failure file.  If no file has been defined
-	 * in login.defs, don't do this.
-	 */
-
-	ftmp = getdef_str ("FTMP_FILE");
-	if (NULL == ftmp) {
-		return;
-	}
-
-	/*
-	 * Open the file for append.  It must already exist for this
-	 * feature to be used.
-	 */
-
-	if (access (ftmp, F_OK) != 0) {
-		return;
-	}
-
-	fd = open (ftmp, O_WRONLY | O_APPEND);
-	if (-1 == fd) {
-		SYSLOG ((LOG_WARN,
-		         "Can't append failure of user %s to %s.",
-		         username, ftmp));
-		return;
-	}
-
-	/*
-	 * Append the new failure record and close the log file.
-	 */
-
-	if (   (write (fd, (const void *) failent, sizeof *failent) != (ssize_t) sizeof *failent)
-	    || (close (fd) != 0)) {
-		SYSLOG ((LOG_WARN,
-		         "Can't append failure of user %s to %s.",
-		         username, ftmp));
-		(void) close (fd);
-	}
-}
-
diff --git a/libmisc/failure.h b/lib/failure.h
index 2ac30d7..1352b68 100644
--- a/libmisc/failure.h
+++ b/lib/failure.h
@@ -13,11 +13,6 @@
 
 #include "defines.h"
 #include "faillog.h"
-#ifdef USE_UTMPX
-#include <utmpx.h>
-#else					/* !USE_UTMPX */
-#include <utmp.h>
-#endif					/* !USE_UTMPX */
 
 /*
  * failure - make failure entry
@@ -45,17 +40,5 @@ extern int failcheck (uid_t uid, struct faillog *fl, bool failed);
  */
 extern void failprint (const struct faillog *);
 
-/*
- * failtmp - update the cumulative failure log
- *
- *	failtmp updates the (struct utmp) formatted failure log which
- *	maintains a record of all login failures.
- */
-#ifdef USE_UTMPX
-extern void failtmp (const char *username, const struct utmpx *);
-#else				/* !USE_UTMPX */
-extern void failtmp (const char *username, const struct utmp *);
-#endif				/* !USE_UTMPX */
-
 #endif
 
diff --git a/lib/fd.c b/lib/fd.c
new file mode 100644
index 0000000..bcfa374
--- /dev/null
+++ b/lib/fd.c
@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: 2024, Skyler Ferrante <sjf5462@rit.edu>
+// SPDX-License-Identifier: BSD-3-Clause
+
+/**
+ * To protect against file descriptor omission attacks, we open the std file
+ * descriptors with /dev/null if they are not already open. Code is based on
+ * fix_fds from sudo.c.
+ */
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "prototypes.h"
+
+static void check_fd(int fd);
+
+void
+check_fds(void)
+{
+	/**
+	 * Make sure stdin, stdout, stderr are open
+	 * If they are closed, set them to /dev/null
+	 */
+	check_fd(STDIN_FILENO);
+	check_fd(STDOUT_FILENO);
+	check_fd(STDERR_FILENO);
+}
+
+static void
+check_fd(int fd)
+{
+	int  devnull;
+
+	if (fcntl(fd, F_GETFL, 0) != -1)
+		return;
+
+	devnull = open("/dev/null", O_RDWR);
+	if (devnull != fd)
+		abort();
+}
diff --git a/lib/fields.c b/lib/fields.c
index 8a56035..5392924 100644
--- a/lib/fields.c
+++ b/lib/fields.c
@@ -21,9 +21,9 @@
  *
  * The supplied field is scanned for non-printable and other illegal
  * characters.
- *  + -1 is returned if an illegal character is present.
- *  +  1 is returned if no illegal characters are present, but the field
- *       contains a non-printable character.
+ *  + -1 is returned if an illegal or control character is present.
+ *  +  1 is returned if no illegal or control characters are present,
+ *       but the field contains a non-printable character.
  *  +  0 is returned otherwise.
  */
 int valid_field (const char *field, const char *illegal)
@@ -37,23 +37,22 @@ int valid_field (const char *field, const char *illegal)
 
 	/* For each character of field, search if it appears in the list
 	 * of illegal characters. */
+	if (illegal && NULL != strpbrk (field, illegal)) {
+		return -1;
+	}
+
+	/* Search if there are non-printable or control characters */
 	for (cp = field; '\0' != *cp; cp++) {
-		if (strchr (illegal, *cp) != NULL) {
+		unsigned char c = *cp;
+		if (!isprint (c)) {
+			err = 1;
+		}
+		if (iscntrl (c)) {
 			err = -1;
 			break;
 		}
 	}
 
-	if (0 == err) {
-		/* Search if there are some non-printable characters */
-		for (cp = field; '\0' != *cp; cp++) {
-			if (!isprint (*cp)) {
-				err = 1;
-				break;
-			}
-		}
-	}
-
 	return err;
 }
 
@@ -74,7 +73,7 @@ void change_field (char *buf, size_t maxsize, const char *prompt)
 
 	printf ("\t%s [%s]: ", prompt, buf);
 	(void) fflush (stdout);
-	if (fgets (newf, (int) maxsize, stdin) != newf) {
+	if (fgets (newf, maxsize, stdin) != newf) {
 		return;
 	}
 
@@ -91,17 +90,16 @@ void change_field (char *buf, size_t maxsize, const char *prompt)
 		 * entering a space.  --marekm
 		 */
 
-		while (--cp >= newf && isspace (*cp));
-		cp++;
+		while (newf < cp && isspace (cp[-1])) {
+			cp--;
+		}
 		*cp = '\0';
 
 		cp = newf;
-		while (('\0' != *cp) && isspace (*cp)) {
+		while (isspace (*cp)) {
 			cp++;
 		}
 
-		strncpy (buf, cp, maxsize - 1);
-		buf[maxsize - 1] = '\0';
+		strcpy (buf, cp);
 	}
 }
-
diff --git a/libmisc/find_new_gid.c b/lib/find_new_gid.c
index 65ab5d0..cfd5609 100644
--- a/libmisc/find_new_gid.c
+++ b/lib/find_new_gid.c
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <errno.h>
 
+#include "alloc.h"
 #include "prototypes.h"
 #include "groupio.h"
 #include "getdef.h"
@@ -40,15 +41,14 @@ static int get_ranges (bool sys_group, gid_t *min_id, gid_t *max_id,
 		*preferred_min = (gid_t) 1;
 
 		/* Get the minimum ID range from login.defs or default to 101 */
-		*min_id = (gid_t) getdef_ulong ("SYS_GID_MIN", 101UL);
+		*min_id = getdef_ulong ("SYS_GID_MIN", 101UL);
 
 		/*
 		 * If SYS_GID_MAX is unspecified, we should assume it to be one
 		 * less than the GID_MIN (which is reserved for non-system accounts)
 		 */
-		gid_def_max = (gid_t) getdef_ulong ("GID_MIN", 1000UL) - 1;
-		*max_id = (gid_t) getdef_ulong ("SYS_GID_MAX",
-				(unsigned long) gid_def_max);
+		gid_def_max = getdef_ulong ("GID_MIN", 1000UL) - 1;
+		*max_id = getdef_ulong ("SYS_GID_MAX", gid_def_max);
 
 		/* Check that the ranges make sense */
 		if (*max_id < *min_id) {
@@ -71,8 +71,8 @@ static int get_ranges (bool sys_group, gid_t *min_id, gid_t *max_id,
 		/* Non-system groups */
 
 		/* Get the values from login.defs or use reasonable defaults */
-		*min_id = (gid_t) getdef_ulong ("GID_MIN", 1000UL);
-		*max_id = (gid_t) getdef_ulong ("GID_MAX", 60000UL);
+		*min_id = getdef_ulong ("GID_MIN", 1000UL);
+		*max_id = getdef_ulong ("GID_MAX", 60000UL);
 
 		/*
 		 * The preferred minimum should match the standard ID minimum
@@ -99,6 +99,7 @@ static int get_ranges (bool sys_group, gid_t *min_id, gid_t *max_id,
  *
  * On success, return 0
  * If the ID is in use, return EEXIST
+ * If the ID might clash with -1, return EINVAL
  * If the ID is outside the range, return ERANGE
  * In other cases, return errno from getgrgid()
  */
@@ -112,6 +113,11 @@ static int check_gid (const gid_t gid,
 		return ERANGE;
 	}
 
+	/* Check for compatibility with 16b and 32b gid_t error codes */
+	if (gid == UINT16_MAX || gid == UINT32_MAX) {
+		return EINVAL;
+	}
+
 	/*
 	 * Check whether we already detected this GID
 	 * using the gr_next() loop
@@ -183,10 +189,10 @@ int find_new_gid (bool sys_group,
 			 * gr_locate_gid() found the GID in an as-yet uncommitted
 			 * entry. We'll proceed below and auto-set a GID.
 			 */
-		} else if (result == EEXIST || result == ERANGE) {
+		} else if (result == EEXIST || result == ERANGE || result == EINVAL) {
 			/*
 			 * Continue on below. At this time, we won't
-			 * treat these two cases differently.
+			 * treat these three cases differently.
 			 */
 		} else {
 			/*
@@ -226,14 +232,13 @@ int find_new_gid (bool sys_group,
 	 */
 
 	/* Create an array to hold all of the discovered GIDs */
-	used_gids = malloc (sizeof (bool) * (gid_max +1));
+	used_gids = CALLOC (gid_max + 1, bool);
 	if (NULL == used_gids) {
 		fprintf (log_get_logfd(),
 			 _("%s: failed to allocate memory: %s\n"),
 			 log_get_progname(), strerror (errno));
 		return -1;
 	}
-	memset (used_gids, false, sizeof (bool) * (gid_max + 1));
 
 	/* First look for the lowest and highest value in the local database */
 	(void) gr_rewind ();
@@ -297,8 +302,11 @@ int find_new_gid (bool sys_group,
 				*gid = id;
 				free (used_gids);
 				return 0;
-			} else if (result == EEXIST) {
-				/* This GID is in use, we'll continue to the next */
+			} else if (result == EEXIST || result == EINVAL) {
+				/*
+				 * This GID is in use or unusable, we'll
+				 * continue to the next.
+				 */
 			} else {
 				/*
 				 * An unexpected error occurred.
@@ -340,8 +348,11 @@ int find_new_gid (bool sys_group,
 					*gid = id;
 					free (used_gids);
 					return 0;
-				} else if (result == EEXIST) {
-					/* This GID is in use, we'll continue to the next */
+				} else if (result == EEXIST || result == EINVAL) {
+					/*
+					 * This GID is in use or unusable, we'll
+					 * continue to the next.
+					 */
 				} else {
 					/*
 					 * An unexpected error occurred.
@@ -400,8 +411,11 @@ int find_new_gid (bool sys_group,
 				*gid = id;
 				free (used_gids);
 				return 0;
-			} else if (result == EEXIST) {
-				/* This GID is in use, we'll continue to the next */
+			} else if (result == EEXIST || result == EINVAL) {
+				/*
+				 * This GID is in use or unusable, we'll
+				 * continue to the next.
+				 */
 			} else {
 				/*
 				 * An unexpected error occurred.
@@ -443,8 +457,11 @@ int find_new_gid (bool sys_group,
 					*gid = id;
 					free (used_gids);
 					return 0;
-				} else if (result == EEXIST) {
-					/* This GID is in use, we'll continue to the next */
+				} else if (result == EEXIST || result == EINVAL) {
+					/*
+					 * This GID is in use or unusable, we'll
+					 * continue to the next.
+					 */
 				} else {
 					/*
 					 * An unexpected error occurred.
diff --git a/libmisc/find_new_sub_gids.c b/lib/find_new_sub_gids.c
index bbd4570..74c9d8f 100644
--- a/libmisc/find_new_sub_gids.c
+++ b/lib/find_new_sub_gids.c
@@ -59,6 +59,6 @@ int find_new_sub_gids (gid_t *range_start, unsigned long *range_count)
 	return 0;
 }
 #else				/* !ENABLE_SUBIDS */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !ENABLE_SUBIDS */
 
diff --git a/libmisc/find_new_sub_uids.c b/lib/find_new_sub_uids.c
index a86b311..cc4b0cf 100644
--- a/libmisc/find_new_sub_uids.c
+++ b/lib/find_new_sub_uids.c
@@ -59,6 +59,6 @@ int find_new_sub_uids (uid_t *range_start, unsigned long *range_count)
 	return 0;
 }
 #else				/* !ENABLE_SUBIDS */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !ENABLE_SUBIDS */
 
diff --git a/libmisc/find_new_uid.c b/lib/find_new_uid.c
index 5f7e74b..45ce712 100644
--- a/libmisc/find_new_uid.c
+++ b/lib/find_new_uid.c
@@ -12,6 +12,7 @@
 #include <stdio.h>
 #include <errno.h>
 
+#include "alloc.h"
 #include "prototypes.h"
 #include "pwio.h"
 #include "getdef.h"
@@ -40,15 +41,14 @@ static int get_ranges (bool sys_user, uid_t *min_id, uid_t *max_id,
 		*preferred_min = (uid_t) 1;
 
 		/* Get the minimum ID range from login.defs or default to 101 */
-		*min_id = (uid_t) getdef_ulong ("SYS_UID_MIN", 101UL);
+		*min_id = getdef_ulong ("SYS_UID_MIN", 101UL);
 
 		/*
 		 * If SYS_UID_MAX is unspecified, we should assume it to be one
 		 * less than the UID_MIN (which is reserved for non-system accounts)
 		 */
-		uid_def_max = (uid_t) getdef_ulong ("UID_MIN", 1000UL) - 1;
-		*max_id = (uid_t) getdef_ulong ("SYS_UID_MAX",
-				(unsigned long) uid_def_max);
+		uid_def_max = getdef_ulong ("UID_MIN", 1000UL) - 1;
+		*max_id = getdef_ulong ("SYS_UID_MAX", uid_def_max);
 
 		/* Check that the ranges make sense */
 		if (*max_id < *min_id) {
@@ -71,8 +71,8 @@ static int get_ranges (bool sys_user, uid_t *min_id, uid_t *max_id,
 		/* Non-system users */
 
 		/* Get the values from login.defs or use reasonable defaults */
-		*min_id = (uid_t) getdef_ulong ("UID_MIN", 1000UL);
-		*max_id = (uid_t) getdef_ulong ("UID_MAX", 60000UL);
+		*min_id = getdef_ulong ("UID_MIN", 1000UL);
+		*max_id = getdef_ulong ("UID_MAX", 60000UL);
 
 		/*
 		 * The preferred minimum should match the standard ID minimum
@@ -99,6 +99,7 @@ static int get_ranges (bool sys_user, uid_t *min_id, uid_t *max_id,
  *
  * On success, return 0
  * If the ID is in use, return EEXIST
+ * If the ID might clash with -1, return EINVAL
  * If the ID is outside the range, return ERANGE
  * In other cases, return errno from getpwuid()
  */
@@ -112,6 +113,11 @@ static int check_uid(const uid_t uid,
 		return ERANGE;
 	}
 
+	/* Check for compatibility with 16b and 32b uid_t error codes */
+	if (uid == UINT16_MAX || uid == UINT32_MAX) {
+		return EINVAL;
+	}
+
 	/*
 	 * Check whether we already detected this UID
 	 * using the pw_next() loop
@@ -183,10 +189,10 @@ int find_new_uid(bool sys_user,
 			 * pw_locate_uid() found the UID in an as-yet uncommitted
 			 * entry. We'll proceed below and auto-set an UID.
 			 */
-		} else if (result == EEXIST || result == ERANGE) {
+		} else if (result == EEXIST || result == ERANGE || result == EINVAL) {
 			/*
 			 * Continue on below. At this time, we won't
-			 * treat these two cases differently.
+			 * treat these three cases differently.
 			 */
 		} else {
 			/*
@@ -226,14 +232,13 @@ int find_new_uid(bool sys_user,
 	 */
 
 	/* Create an array to hold all of the discovered UIDs */
-	used_uids = malloc (sizeof (bool) * (uid_max +1));
+	used_uids = CALLOC(uid_max + 1, bool);
 	if (NULL == used_uids) {
 		fprintf (log_get_logfd(),
 			 _("%s: failed to allocate memory: %s\n"),
 			 log_get_progname(), strerror (errno));
 		return -1;
 	}
-	memset (used_uids, false, sizeof (bool) * (uid_max + 1));
 
 	/* First look for the lowest and highest value in the local database */
 	(void) pw_rewind ();
@@ -297,8 +302,11 @@ int find_new_uid(bool sys_user,
 				*uid = id;
 				free (used_uids);
 				return 0;
-			} else if (result == EEXIST) {
-				/* This UID is in use, we'll continue to the next */
+			} else if (result == EEXIST || result == EINVAL) {
+				/*
+				 * This GID is in use or unusable, we'll
+				 * continue to the next.
+				 */
 			} else {
 				/*
 				 * An unexpected error occurred.
@@ -340,8 +348,11 @@ int find_new_uid(bool sys_user,
 					*uid = id;
 					free (used_uids);
 					return 0;
-				} else if (result == EEXIST) {
-					/* This UID is in use, we'll continue to the next */
+				} else if (result == EEXIST || result == EINVAL) {
+					/*
+					 * This GID is in use or unusable, we'll
+					 * continue to the next.
+					 */
 				} else {
 					/*
 					 * An unexpected error occurred.
@@ -400,8 +411,11 @@ int find_new_uid(bool sys_user,
 				*uid = id;
 				free (used_uids);
 				return 0;
-			} else if (result == EEXIST) {
-				/* This UID is in use, we'll continue to the next */
+			} else if (result == EEXIST || result == EINVAL) {
+				/*
+				 * This GID is in use or unusable, we'll
+				 * continue to the next.
+				 */
 			} else {
 				/*
 				 * An unexpected error occurred.
@@ -443,8 +457,11 @@ int find_new_uid(bool sys_user,
 					*uid = id;
 					free (used_uids);
 					return 0;
-				} else if (result == EEXIST) {
-					/* This UID is in use, we'll continue to the next */
+				} else if (result == EEXIST || result == EINVAL) {
+					/*
+					 * This GID is in use or unusable, we'll
+					 * continue to the next.
+					 */
 				} else {
 					/*
 					 * An unexpected error occurred.
diff --git a/lib/fputsx.c b/lib/fputsx.c
index bb71ab2..0565310 100644
--- a/lib/fputsx.c
+++ b/lib/fputsx.c
@@ -16,7 +16,8 @@
 #ident "$Id$"
 
 
-/*@null@*/char *fgetsx (/*@returned@*/ /*@out@*/char *buf, int cnt, FILE * f)
+/*@null@*/char *
+fgetsx(/*@returned@*/char *restrict buf, int cnt, FILE *restrict f)
 {
 	char *cp = buf;
 	char *ep;
diff --git a/lib/freezero.c b/lib/freezero.c
new file mode 100644
index 0000000..c565f43
--- /dev/null
+++ b/lib/freezero.c
@@ -0,0 +1,30 @@
+/*	$OpenBSD: malloc.c,v 1.267 2020/11/23 15:42:11 otto Exp $	*/
+/*
+ * Copyright (c) 2008, 2010, 2011, 2016 Otto Moerbeek <otto@drijf.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+void
+freezero(void *ptr, size_t sz)
+{
+	/* This is legal. */
+	if (ptr == NULL)
+		return;
+
+	explicit_bzero(ptr, sz);
+	free(ptr);
+}
diff --git a/lib/freezero.h b/lib/freezero.h
new file mode 100644
index 0000000..8dbcd7c
--- /dev/null
+++ b/lib/freezero.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2005 Aurelien Jarno
+ * Copyright © 2006 Robert Millan
+ * Copyright © 2008-2011 Guillem Jover <guillem@hadrons.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+ * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LIBBSD_FREEZERO_H
+#define LIBBSD_FREEZERO_H
+
+void freezero(void *ptr, size_t size);
+
+#endif
diff --git a/lib/get_gid.c b/lib/get_gid.c
index cbcd6f4..2420137 100644
--- a/lib/get_gid.c
+++ b/lib/get_gid.c
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+
 #include <config.h>
 
 #ident "$Id$"
@@ -11,21 +12,23 @@
 #include "prototypes.h"
 #include "defines.h"
 
-int get_gid (const char *gidstr, gid_t *gid)
+
+int
+get_gid(const char *gidstr, gid_t *gid)
 {
-	long long int val;
-	char *endptr;
+	char       *end;
+	long long  val;
 
 	errno = 0;
-	val = strtoll (gidstr, &endptr, 10);
+	val = strtoll(gidstr, &end, 10);
 	if (   ('\0' == *gidstr)
-	    || ('\0' != *endptr)
-	    || (ERANGE == errno)
+	    || ('\0' != *end)
+	    || (0 != errno)
 	    || (/*@+longintegral@*/val != (gid_t)val)/*@=longintegral@*/) {
-		return 0;
+		return -1;
 	}
 
-	*gid = (gid_t)val;
-	return 1;
+	*gid = val;
+	return 0;
 }
 
diff --git a/lib/get_pid.c b/lib/get_pid.c
index 383eb69..af3f2f8 100644
--- a/lib/get_pid.c
+++ b/lib/get_pid.c
@@ -10,22 +10,94 @@
 
 #include "prototypes.h"
 #include "defines.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 
-int get_pid (const char *pidstr, pid_t *pid)
+#include "string/sprintf.h"
+
+
+int
+get_pid(const char *pidstr, pid_t *pid)
 {
-	long long int val;
-	char *endptr;
+	char       *end;
+	long long  val;
 
 	errno = 0;
-	val = strtoll (pidstr, &endptr, 10);
+	val = strtoll(pidstr, &end, 10);
 	if (   ('\0' == *pidstr)
-	    || ('\0' != *endptr)
-	    || (ERANGE == errno)
+	    || ('\0' != *end)
+	    || (0 != errno)
+	    || (val < 1)
 	    || (/*@+longintegral@*/val != (pid_t)val)/*@=longintegral@*/) {
-		return 0;
+		return -1;
 	}
 
-	*pid = (pid_t)val;
-	return 1;
+	*pid = val;
+	return 0;
 }
 
+/*
+ * If use passed in fd:4 as an argument, then return the
+ * value '4', the fd to use.
+ * On error, return -1.
+ */
+int get_pidfd_from_fd(const char *pidfdstr)
+{
+	char         *end;
+	long long    val;
+	struct stat  st;
+	dev_t proc_st_dev, proc_st_rdev;
+
+	errno = 0;
+	val = strtoll(pidfdstr, &end, 10);
+	if (   ('\0' == *pidfdstr)
+	    || ('\0' != *end)
+	    || (0 != errno)
+	    || (val < 0)
+	    || (/*@+longintegral@*/val != (int)val)/*@=longintegral@*/) {
+		return -1;
+	}
+
+	if (stat("/proc/self/uid_map", &st) < 0) {
+		return -1;
+	}
+
+	proc_st_dev = st.st_dev;
+	proc_st_rdev = st.st_rdev;
+
+	if (fstat(val, &st) < 0) {
+		return -1;
+	}
+
+	if (st.st_dev != proc_st_dev || st.st_rdev != proc_st_rdev) {
+		return -1;
+	}
+
+	return (int)val;
+}
+
+int open_pidfd(const char *pidstr)
+{
+	int    proc_dir_fd;
+	char   proc_dir_name[32];
+	pid_t  target;
+
+	if (get_pid(pidstr, &target) == -1)
+		return -ENOENT;
+
+	/* max string length is 6 + 10 + 1 + 1 = 18, allocate 32 bytes */
+	if (SNPRINTF(proc_dir_name, "/proc/%u/", target) == -1) {
+		fprintf(stderr, "snprintf of proc path failed for %u: %s\n",
+			target, strerror(errno));
+		return -EINVAL;
+	}
+
+	proc_dir_fd = open(proc_dir_name, O_DIRECTORY);
+	if (proc_dir_fd < 0) {
+		fprintf(stderr, _("Could not open proc directory for target %u: %s\n"),
+			target, strerror(errno));
+		return -EINVAL;
+	}
+	return proc_dir_fd;
+}
diff --git a/lib/get_uid.c b/lib/get_uid.c
index 50f9922..77fe966 100644
--- a/lib/get_uid.c
+++ b/lib/get_uid.c
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+
 #include <config.h>
 
 #ident "$Id$"
@@ -11,21 +12,23 @@
 #include "prototypes.h"
 #include "defines.h"
 
-int get_uid (const char *uidstr, uid_t *uid)
+
+int
+get_uid(const char *uidstr, uid_t *uid)
 {
-	long long int val;
-	char *endptr;
+	char       *end;
+	long long  val;
 
 	errno = 0;
-	val = strtoll (uidstr, &endptr, 10);
+	val = strtoll(uidstr, &end, 10);
 	if (   ('\0' == *uidstr)
-	    || ('\0' != *endptr)
-	    || (ERANGE == errno)
+	    || ('\0' != *end)
+	    || (0 != errno)
 	    || (/*@+longintegral@*/val != (uid_t)val)/*@=longintegral@*/) {
-		return 0;
+		return -1;
 	}
 
-	*uid = (uid_t)val;
-	return 1;
+	*uid = val;
+	return 0;
 }
 
diff --git a/libmisc/getdate.c b/lib/getdate.c
index fc17c18..556ce62 100644
--- a/libmisc/getdate.c
+++ b/lib/getdate.c
@@ -82,9 +82,6 @@
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>
-# ifdef FORCE_ALLOCA_H
-#  include <alloca.h>
-# endif
 #endif
 
 /* Since the code of getdate.y is not included in the Emacs executable
@@ -101,6 +98,7 @@
 #include <ctype.h>
 #include <time.h>
 
+#include "attr.h"
 #include "getdate.h"
 
 #include <string.h>
@@ -215,7 +213,7 @@ static int	yyRelSeconds;
 static int	yyRelYear;
 
 
-#line 219 "getdate.c"
+#line 217 "getdate.c"
 
 # ifndef YY_CAST
 #  ifdef __cplusplus
@@ -301,12 +299,12 @@ extern int yydebug;
 #if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
 union YYSTYPE
 {
-#line 149 "getdate.y"
+#line 147 "getdate.y"
 
     int			Number;
     enum _MERIDIAN	Meridian;
 
-#line 310 "getdate.c"
+#line 308 "getdate.c"
 
 };
 typedef union YYSTYPE YYSTYPE;
@@ -746,12 +744,12 @@ static const yytype_int8 yytranslate[] =
 /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
 static const yytype_int16 yyrline[] =
 {
-       0,   165,   165,   166,   169,   172,   175,   178,   181,   184,
-     187,   193,   199,   208,   214,   226,   229,   233,   238,   242,
-     246,   252,   256,   274,   280,   286,   290,   295,   299,   306,
-     314,   317,   320,   323,   326,   329,   332,   335,   338,   341,
-     344,   347,   350,   353,   356,   359,   362,   365,   368,   373,
-     407,   410
+       0,   163,   163,   164,   167,   170,   173,   176,   179,   182,
+     185,   191,   197,   206,   212,   224,   227,   231,   236,   240,
+     244,   250,   254,   272,   278,   284,   288,   293,   297,   304,
+     312,   315,   318,   321,   324,   327,   330,   333,   336,   339,
+     342,   345,   348,   351,   354,   357,   360,   363,   366,   371,
+     405,   408
 };
 #endif
 
@@ -1352,69 +1350,69 @@ yyreduce:
   switch (yyn)
     {
   case 4: /* item: time  */
-#line 169 "getdate.y"
+#line 167 "getdate.y"
                {
 	    yyHaveTime++;
 	}
-#line 1360 "getdate.c"
+#line 1358 "getdate.c"
     break;
 
   case 5: /* item: zone  */
-#line 172 "getdate.y"
+#line 170 "getdate.y"
                {
 	    yyHaveZone++;
 	}
-#line 1368 "getdate.c"
+#line 1366 "getdate.c"
     break;
 
   case 6: /* item: date  */
-#line 175 "getdate.y"
+#line 173 "getdate.y"
                {
 	    yyHaveDate++;
 	}
-#line 1376 "getdate.c"
+#line 1374 "getdate.c"
     break;
 
   case 7: /* item: day  */
-#line 178 "getdate.y"
+#line 176 "getdate.y"
               {
 	    yyHaveDay++;
 	}
-#line 1384 "getdate.c"
+#line 1382 "getdate.c"
     break;
 
   case 8: /* item: rel  */
-#line 181 "getdate.y"
+#line 179 "getdate.y"
               {
 	    yyHaveRel++;
 	}
-#line 1392 "getdate.c"
+#line 1390 "getdate.c"
     break;
 
   case 10: /* time: tUNUMBER tMERIDIAN  */
-#line 187 "getdate.y"
+#line 185 "getdate.y"
                              {
 	    yyHour = (yyvsp[-1].Number);
 	    yyMinutes = 0;
 	    yySeconds = 0;
 	    yyMeridian = (yyvsp[0].Meridian);
 	}
-#line 1403 "getdate.c"
+#line 1401 "getdate.c"
     break;
 
   case 11: /* time: tUNUMBER ':' tUNUMBER o_merid  */
-#line 193 "getdate.y"
+#line 191 "getdate.y"
                                         {
 	    yyHour = (yyvsp[-3].Number);
 	    yyMinutes = (yyvsp[-1].Number);
 	    yySeconds = 0;
 	    yyMeridian = (yyvsp[0].Meridian);
 	}
-#line 1414 "getdate.c"
+#line 1412 "getdate.c"
     break;
 
   case 12: /* time: tUNUMBER ':' tUNUMBER tSNUMBER  */
-#line 199 "getdate.y"
+#line 197 "getdate.y"
                                          {
 	    yyHour = (yyvsp[-3].Number);
 	    yyMinutes = (yyvsp[-1].Number);
@@ -1424,22 +1422,22 @@ yyreduce:
 			  ? -(yyvsp[0].Number) % 100 + (-(yyvsp[0].Number) / 100) * 60
 			  : - ((yyvsp[0].Number) % 100 + ((yyvsp[0].Number) / 100) * 60));
 	}
-#line 1428 "getdate.c"
+#line 1426 "getdate.c"
     break;
 
   case 13: /* time: tUNUMBER ':' tUNUMBER ':' tUNUMBER o_merid  */
-#line 208 "getdate.y"
+#line 206 "getdate.y"
                                                      {
 	    yyHour = (yyvsp[-5].Number);
 	    yyMinutes = (yyvsp[-3].Number);
 	    yySeconds = (yyvsp[-1].Number);
 	    yyMeridian = (yyvsp[0].Meridian);
 	}
-#line 1439 "getdate.c"
+#line 1437 "getdate.c"
     break;
 
   case 14: /* time: tUNUMBER ':' tUNUMBER ':' tUNUMBER tSNUMBER  */
-#line 214 "getdate.y"
+#line 212 "getdate.y"
                                                       {
 	    yyHour = (yyvsp[-5].Number);
 	    yyMinutes = (yyvsp[-3].Number);
@@ -1450,71 +1448,71 @@ yyreduce:
 			  ? -(yyvsp[0].Number) % 100 + (-(yyvsp[0].Number) / 100) * 60
 			  : - ((yyvsp[0].Number) % 100 + ((yyvsp[0].Number) / 100) * 60));
 	}
-#line 1454 "getdate.c"
+#line 1452 "getdate.c"
     break;
 
   case 15: /* zone: tZONE  */
-#line 226 "getdate.y"
+#line 224 "getdate.y"
                 {
 	    yyTimezone = (yyvsp[0].Number);
 	}
-#line 1462 "getdate.c"
+#line 1460 "getdate.c"
     break;
 
   case 16: /* zone: tDAYZONE  */
-#line 229 "getdate.y"
+#line 227 "getdate.y"
                    {
 	    yyTimezone = (yyvsp[0].Number) - 60;
 	}
-#line 1470 "getdate.c"
+#line 1468 "getdate.c"
     break;
 
   case 17: /* zone: tZONE tDST  */
-#line 233 "getdate.y"
+#line 231 "getdate.y"
                      {
 	    yyTimezone = (yyvsp[-1].Number) - 60;
 	}
-#line 1478 "getdate.c"
+#line 1476 "getdate.c"
     break;
 
   case 18: /* day: tDAY  */
-#line 238 "getdate.y"
+#line 236 "getdate.y"
                {
 	    yyDayOrdinal = 1;
 	    yyDayNumber = (yyvsp[0].Number);
 	}
-#line 1487 "getdate.c"
+#line 1485 "getdate.c"
     break;
 
   case 19: /* day: tDAY ','  */
-#line 242 "getdate.y"
+#line 240 "getdate.y"
                    {
 	    yyDayOrdinal = 1;
 	    yyDayNumber = (yyvsp[-1].Number);
 	}
-#line 1496 "getdate.c"
+#line 1494 "getdate.c"
     break;
 
   case 20: /* day: tUNUMBER tDAY  */
-#line 246 "getdate.y"
+#line 244 "getdate.y"
                         {
 	    yyDayOrdinal = (yyvsp[-1].Number);
 	    yyDayNumber = (yyvsp[0].Number);
 	}
-#line 1505 "getdate.c"
+#line 1503 "getdate.c"
     break;
 
   case 21: /* date: tUNUMBER '/' tUNUMBER  */
-#line 252 "getdate.y"
+#line 250 "getdate.y"
                                 {
 	    yyMonth = (yyvsp[-2].Number);
 	    yyDay = (yyvsp[0].Number);
 	}
-#line 1514 "getdate.c"
+#line 1512 "getdate.c"
     break;
 
   case 22: /* date: tUNUMBER '/' tUNUMBER '/' tUNUMBER  */
-#line 256 "getdate.y"
+#line 254 "getdate.y"
                                              {
 	  /* Interpret as YYYY/MM/DD if $1 >= 1000, otherwise as MM/DD/YY.
 	     The goal in recognizing YYYY/MM/DD is solely to support legacy
@@ -1533,71 +1531,71 @@ yyreduce:
 	      yyYear = (yyvsp[0].Number);
 	    }
 	}
-#line 1537 "getdate.c"
+#line 1535 "getdate.c"
     break;
 
   case 23: /* date: tUNUMBER tSNUMBER tSNUMBER  */
-#line 274 "getdate.y"
+#line 272 "getdate.y"
                                      {
 	    /* ISO 8601 format.  yyyy-mm-dd.  */
 	    yyYear = (yyvsp[-2].Number);
 	    yyMonth = -(yyvsp[-1].Number);
 	    yyDay = -(yyvsp[0].Number);
 	}
-#line 1548 "getdate.c"
+#line 1546 "getdate.c"
     break;
 
   case 24: /* date: tUNUMBER tMONTH tSNUMBER  */
-#line 280 "getdate.y"
+#line 278 "getdate.y"
                                    {
 	    /* e.g. 17-JUN-1992.  */
 	    yyDay = (yyvsp[-2].Number);
 	    yyMonth = (yyvsp[-1].Number);
 	    yyYear = -(yyvsp[0].Number);
 	}
-#line 1559 "getdate.c"
+#line 1557 "getdate.c"
     break;
 
   case 25: /* date: tMONTH tUNUMBER  */
-#line 286 "getdate.y"
+#line 284 "getdate.y"
                           {
 	    yyMonth = (yyvsp[-1].Number);
 	    yyDay = (yyvsp[0].Number);
 	}
-#line 1568 "getdate.c"
+#line 1566 "getdate.c"
     break;
 
   case 26: /* date: tMONTH tUNUMBER ',' tUNUMBER  */
-#line 290 "getdate.y"
+#line 288 "getdate.y"
                                        {
 	    yyMonth = (yyvsp[-3].Number);
 	    yyDay = (yyvsp[-2].Number);
 	    yyYear = (yyvsp[0].Number);
 	}
-#line 1578 "getdate.c"
+#line 1576 "getdate.c"
     break;
 
   case 27: /* date: tUNUMBER tMONTH  */
-#line 295 "getdate.y"
+#line 293 "getdate.y"
                           {
 	    yyMonth = (yyvsp[0].Number);
 	    yyDay = (yyvsp[-1].Number);
 	}
-#line 1587 "getdate.c"
+#line 1585 "getdate.c"
     break;
 
   case 28: /* date: tUNUMBER tMONTH tUNUMBER  */
-#line 299 "getdate.y"
+#line 297 "getdate.y"
                                    {
 	    yyMonth = (yyvsp[-1].Number);
 	    yyDay = (yyvsp[-2].Number);
 	    yyYear = (yyvsp[0].Number);
 	}
-#line 1597 "getdate.c"
+#line 1595 "getdate.c"
     break;
 
   case 29: /* rel: relunit tAGO  */
-#line 306 "getdate.y"
+#line 304 "getdate.y"
                        {
 	    yyRelSeconds = -yyRelSeconds;
 	    yyRelMinutes = -yyRelMinutes;
@@ -1606,155 +1604,155 @@ yyreduce:
 	    yyRelMonth = -yyRelMonth;
 	    yyRelYear = -yyRelYear;
 	}
-#line 1610 "getdate.c"
+#line 1608 "getdate.c"
     break;
 
   case 31: /* relunit: tUNUMBER tYEAR_UNIT  */
-#line 317 "getdate.y"
+#line 315 "getdate.y"
                               {
 	    yyRelYear += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1618 "getdate.c"
+#line 1616 "getdate.c"
     break;
 
   case 32: /* relunit: tSNUMBER tYEAR_UNIT  */
-#line 320 "getdate.y"
+#line 318 "getdate.y"
                               {
 	    yyRelYear += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1626 "getdate.c"
+#line 1624 "getdate.c"
     break;
 
   case 33: /* relunit: tYEAR_UNIT  */
-#line 323 "getdate.y"
+#line 321 "getdate.y"
                      {
-	    yyRelYear++;
+	    yyRelYear += (yyvsp[0].Number);
 	}
-#line 1634 "getdate.c"
+#line 1632 "getdate.c"
     break;
 
   case 34: /* relunit: tUNUMBER tMONTH_UNIT  */
-#line 326 "getdate.y"
+#line 324 "getdate.y"
                                {
 	    yyRelMonth += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1642 "getdate.c"
+#line 1640 "getdate.c"
     break;
 
   case 35: /* relunit: tSNUMBER tMONTH_UNIT  */
-#line 329 "getdate.y"
+#line 327 "getdate.y"
                                {
 	    yyRelMonth += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1650 "getdate.c"
+#line 1648 "getdate.c"
     break;
 
   case 36: /* relunit: tMONTH_UNIT  */
-#line 332 "getdate.y"
+#line 330 "getdate.y"
                       {
-	    yyRelMonth++;
+	    yyRelMonth += (yyvsp[0].Number);
 	}
-#line 1658 "getdate.c"
+#line 1656 "getdate.c"
     break;
 
   case 37: /* relunit: tUNUMBER tDAY_UNIT  */
-#line 335 "getdate.y"
+#line 333 "getdate.y"
                              {
 	    yyRelDay += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1666 "getdate.c"
+#line 1664 "getdate.c"
     break;
 
   case 38: /* relunit: tSNUMBER tDAY_UNIT  */
-#line 338 "getdate.y"
+#line 336 "getdate.y"
                              {
 	    yyRelDay += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1674 "getdate.c"
+#line 1672 "getdate.c"
     break;
 
   case 39: /* relunit: tDAY_UNIT  */
-#line 341 "getdate.y"
+#line 339 "getdate.y"
                     {
-	    yyRelDay++;
+	    yyRelDay += (yyvsp[0].Number);
 	}
-#line 1682 "getdate.c"
+#line 1680 "getdate.c"
     break;
 
   case 40: /* relunit: tUNUMBER tHOUR_UNIT  */
-#line 344 "getdate.y"
+#line 342 "getdate.y"
                               {
 	    yyRelHour += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1690 "getdate.c"
+#line 1688 "getdate.c"
     break;
 
   case 41: /* relunit: tSNUMBER tHOUR_UNIT  */
-#line 347 "getdate.y"
+#line 345 "getdate.y"
                               {
 	    yyRelHour += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1698 "getdate.c"
+#line 1696 "getdate.c"
     break;
 
   case 42: /* relunit: tHOUR_UNIT  */
-#line 350 "getdate.y"
+#line 348 "getdate.y"
                      {
-	    yyRelHour++;
+	    yyRelHour += (yyvsp[0].Number);
 	}
-#line 1706 "getdate.c"
+#line 1704 "getdate.c"
     break;
 
   case 43: /* relunit: tUNUMBER tMINUTE_UNIT  */
-#line 353 "getdate.y"
+#line 351 "getdate.y"
                                 {
 	    yyRelMinutes += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1714 "getdate.c"
+#line 1712 "getdate.c"
     break;
 
   case 44: /* relunit: tSNUMBER tMINUTE_UNIT  */
-#line 356 "getdate.y"
+#line 354 "getdate.y"
                                 {
 	    yyRelMinutes += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1722 "getdate.c"
+#line 1720 "getdate.c"
     break;
 
   case 45: /* relunit: tMINUTE_UNIT  */
-#line 359 "getdate.y"
+#line 357 "getdate.y"
                        {
-	    yyRelMinutes++;
+	    yyRelMinutes += (yyvsp[0].Number);
 	}
-#line 1730 "getdate.c"
+#line 1728 "getdate.c"
     break;
 
   case 46: /* relunit: tUNUMBER tSEC_UNIT  */
-#line 362 "getdate.y"
+#line 360 "getdate.y"
                              {
 	    yyRelSeconds += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1738 "getdate.c"
+#line 1736 "getdate.c"
     break;
 
   case 47: /* relunit: tSNUMBER tSEC_UNIT  */
-#line 365 "getdate.y"
+#line 363 "getdate.y"
                              {
 	    yyRelSeconds += (yyvsp[-1].Number) * (yyvsp[0].Number);
 	}
-#line 1746 "getdate.c"
+#line 1744 "getdate.c"
     break;
 
   case 48: /* relunit: tSEC_UNIT  */
-#line 368 "getdate.y"
+#line 366 "getdate.y"
                     {
-	    yyRelSeconds++;
+	    yyRelSeconds += (yyvsp[0].Number);
 	}
-#line 1754 "getdate.c"
+#line 1752 "getdate.c"
     break;
 
   case 49: /* number: tUNUMBER  */
-#line 374 "getdate.y"
+#line 372 "getdate.y"
           {
 	    if ((yyHaveTime != 0) && (yyHaveDate != 0) && (yyHaveRel == 0))
 	      yyYear = (yyvsp[0].Number);
@@ -1785,27 +1783,27 @@ yyreduce:
 		  }
 	      }
 	  }
-#line 1789 "getdate.c"
+#line 1787 "getdate.c"
     break;
 
   case 50: /* o_merid: %empty  */
-#line 407 "getdate.y"
+#line 405 "getdate.y"
           {
 	    (yyval.Meridian) = MER24;
 	  }
-#line 1797 "getdate.c"
+#line 1795 "getdate.c"
     break;
 
   case 51: /* o_merid: tMERIDIAN  */
-#line 411 "getdate.y"
+#line 409 "getdate.y"
           {
 	    (yyval.Meridian) = (yyvsp[0].Meridian);
 	  }
-#line 1805 "getdate.c"
+#line 1803 "getdate.c"
     break;
 
 
-#line 1809 "getdate.c"
+#line 1807 "getdate.c"
 
       default: break;
     }
@@ -1998,7 +1996,7 @@ yyreturnlab:
   return yyresult;
 }
 
-#line 416 "getdate.y"
+#line 414 "getdate.y"
 
 
 /* Month and day table. */
@@ -2158,7 +2156,7 @@ static TABLE const MilitaryTable[] = {
 
 
 
-static int yyerror (unused const char *s)
+static int yyerror (MAYBE_UNUSED const char *s)
 {
   return 0;
 }
@@ -2511,11 +2509,8 @@ time_t get_date (const char *p, const time_t *now)
 
 #if	defined (TEST)
 
-/* ARGSUSED */
 int
-main (ac, av)
-     int ac;
-     char *av[];
+main(void)
 {
   char buff[MAX_BUFF_LEN + 1];
   time_t d;
diff --git a/libmisc/getdate.h b/lib/getdate.h
index eae56f6..eae56f6 100644
--- a/libmisc/getdate.h
+++ b/lib/getdate.h
diff --git a/libmisc/getdate.y b/lib/getdate.y
index 0c07f74..8cea2cc 100644
--- a/libmisc/getdate.y
+++ b/lib/getdate.y
@@ -12,9 +12,6 @@
 
 #ifdef HAVE_CONFIG_H
 # include <config.h>
-# ifdef FORCE_ALLOCA_H
-#  include <alloca.h>
-# endif
 #endif
 
 /* Since the code of getdate.y is not included in the Emacs executable
@@ -31,6 +28,7 @@
 #include <ctype.h>
 #include <time.h>
 
+#include "attr.h"
 #include "getdate.h"
 
 #include <string.h>
@@ -321,7 +319,7 @@ relunit	: tUNUMBER tYEAR_UNIT {
 	    yyRelYear += $1 * $2;
 	}
 	| tYEAR_UNIT {
-	    yyRelYear++;
+	    yyRelYear += $1;
 	}
 	| tUNUMBER tMONTH_UNIT {
 	    yyRelMonth += $1 * $2;
@@ -330,7 +328,7 @@ relunit	: tUNUMBER tYEAR_UNIT {
 	    yyRelMonth += $1 * $2;
 	}
 	| tMONTH_UNIT {
-	    yyRelMonth++;
+	    yyRelMonth += $1;
 	}
 	| tUNUMBER tDAY_UNIT {
 	    yyRelDay += $1 * $2;
@@ -339,7 +337,7 @@ relunit	: tUNUMBER tYEAR_UNIT {
 	    yyRelDay += $1 * $2;
 	}
 	| tDAY_UNIT {
-	    yyRelDay++;
+	    yyRelDay += $1;
 	}
 	| tUNUMBER tHOUR_UNIT {
 	    yyRelHour += $1 * $2;
@@ -348,7 +346,7 @@ relunit	: tUNUMBER tYEAR_UNIT {
 	    yyRelHour += $1 * $2;
 	}
 	| tHOUR_UNIT {
-	    yyRelHour++;
+	    yyRelHour += $1;
 	}
 	| tUNUMBER tMINUTE_UNIT {
 	    yyRelMinutes += $1 * $2;
@@ -357,7 +355,7 @@ relunit	: tUNUMBER tYEAR_UNIT {
 	    yyRelMinutes += $1 * $2;
 	}
 	| tMINUTE_UNIT {
-	    yyRelMinutes++;
+	    yyRelMinutes += $1;
 	}
 	| tUNUMBER tSEC_UNIT {
 	    yyRelSeconds += $1 * $2;
@@ -366,7 +364,7 @@ relunit	: tUNUMBER tYEAR_UNIT {
 	    yyRelSeconds += $1 * $2;
 	}
 	| tSEC_UNIT {
-	    yyRelSeconds++;
+	    yyRelSeconds += $1;
 	}
 	;
 
@@ -572,7 +570,7 @@ static TABLE const MilitaryTable[] = {
 
 
 
-static int yyerror (unused const char *s)
+static int yyerror (MAYBE_UNUSED const char *s)
 {
   return 0;
 }
@@ -925,11 +923,8 @@ time_t get_date (const char *p, const time_t *now)
 
 #if	defined (TEST)
 
-/* ARGSUSED */
 int
-main (ac, av)
-     int ac;
-     char *av[];
+main(void)
 {
   char buff[MAX_BUFF_LEN + 1];
   time_t d;
diff --git a/lib/getdef.c b/lib/getdef.c
index dcd1fe7..30f54ba 100644
--- a/lib/getdef.c
+++ b/lib/getdef.c
@@ -13,6 +13,7 @@
 
 #include "prototypes.h"
 #include "defines.h"
+#include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>
@@ -20,8 +21,14 @@
 #ifdef USE_ECONF
 #include <libeconf.h>
 #endif
+
+#include "alloc.h"
+#include "atoi/str2i.h"
 #include "getdef.h"
 #include "shadowlog_internal.h"
+#include "string/sprintf.h"
+
+
 /*
  * A configuration item definition.
  */
@@ -33,7 +40,6 @@ struct itemdef {
 #define PAMDEFS					\
 	{"CHFN_AUTH", NULL},			\
 	{"CHSH_AUTH", NULL},			\
-	{"CRACKLIB_DICTPATH", NULL},		\
 	{"ENV_HZ", NULL},			\
 	{"ENVIRON_FILE", NULL},			\
 	{"ENV_TZ", NULL},			\
@@ -132,10 +138,8 @@ static struct itemdef def_table[] = {
 #ifndef USE_PAM
 	PAMDEFS
 #endif
-#ifdef USE_SYSLOG
 	{"SYSLOG_SG_ENAB", NULL},
 	{"SYSLOG_SU_ENAB", NULL},
-#endif
 #ifdef WITH_TCB
 	{"TCB_AUTH_GROUP", NULL},
 	{"TCB_SYMLINKS", NULL},
@@ -173,7 +177,7 @@ static const char* def_fname = LOGINDEFS;	/* login config defs file       */
 static bool def_loaded = false;		/* are defs already loaded?     */
 
 /* local function prototypes */
-static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *);
+static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *, const char *);
 static void def_load (void);
 
 
@@ -192,8 +196,8 @@ static void def_load (void);
 		def_load ();
 	}
 
-	d = def_find (item);
-	return ((NULL == d)? (const char *) NULL : d->value);
+	d = def_find (item, NULL);
+	return (NULL == d) ? NULL : d->value;
 }
 
 
@@ -211,7 +215,7 @@ bool getdef_bool (const char *item)
 		def_load ();
 	}
 
-	d = def_find (item);
+	d = def_find (item, NULL);
 	if ((NULL == d) || (NULL == d->value)) {
 		return false;
 	}
@@ -237,21 +241,21 @@ int getdef_num (const char *item, int dflt)
 		def_load ();
 	}
 
-	d = def_find (item);
+	d = def_find (item, NULL);
 	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
 	}
 
-	if (   (getlong (d->value, &val) == 0)
+	if (   (str2sl(&val, d->value) == -1)
 	    || (val > INT_MAX)
-	    || (val < INT_MIN)) {
+	    || (val < -1)) {
 		fprintf (shadow_logfd,
 		         _("configuration error - cannot parse %s value: '%s'"),
 		         item, d->value);
 		return dflt;
 	}
 
-	return (int) val;
+	return val;
 }
 
 
@@ -272,12 +276,12 @@ unsigned int getdef_unum (const char *item, unsigned int dflt)
 		def_load ();
 	}
 
-	d = def_find (item);
+	d = def_find (item, NULL);
 	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
 	}
 
-	if (   (getlong (d->value, &val) == 0)
+	if (   (str2sl(&val, d->value) == -1)
 	    || (val < 0)
 	    || (val > INT_MAX)) {
 		fprintf (shadow_logfd,
@@ -286,7 +290,7 @@ unsigned int getdef_unum (const char *item, unsigned int dflt)
 		return dflt;
 	}
 
-	return (unsigned int) val;
+	return val;
 }
 
 
@@ -307,12 +311,12 @@ long getdef_long (const char *item, long dflt)
 		def_load ();
 	}
 
-	d = def_find (item);
+	d = def_find (item, NULL);
 	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
 	}
 
-	if (getlong (d->value, &val) == 0) {
+	if (str2sl(&val, d->value) == -1 || val < -1) {
 		fprintf (shadow_logfd,
 		         _("configuration error - cannot parse %s value: '%s'"),
 		         item, d->value);
@@ -339,12 +343,12 @@ unsigned long getdef_ulong (const char *item, unsigned long dflt)
 		def_load ();
 	}
 
-	d = def_find (item);
+	d = def_find (item, NULL);
 	if ((NULL == d) || (NULL == d->value)) {
 		return dflt;
 	}
 
-	if (getulong (d->value, &val) == 0) {
+	if (str2ul(&val, d->value) == -1) {
 		fprintf (shadow_logfd,
 		         _("configuration error - cannot parse %s value: '%s'"),
 		         item, d->value);
@@ -359,7 +363,7 @@ unsigned long getdef_ulong (const char *item, unsigned long dflt)
  * (also used when loading the initial defaults)
  */
 
-int putdef_str (const char *name, const char *value)
+int putdef_str (const char *name, const char *value, const char *srcfile)
 {
 	struct itemdef *d;
 	char *cp;
@@ -372,10 +376,9 @@ int putdef_str (const char *name, const char *value)
 	 * Locate the slot to save the value.  If this parameter
 	 * is unknown then "def_find" will print an err message.
 	 */
-	d = def_find (name);
-	if (NULL == d) {
+	d = def_find (name, srcfile);
+	if (NULL == d)
 		return -1;
-	}
 
 	/*
 	 * Save off the value.
@@ -399,9 +402,12 @@ int putdef_str (const char *name, const char *value)
  *
  * Search through a table of configurable items to locate the
  * specified configuration option.
+ *
+ * If srcfile is not NULL, and the item is not found, then report an error saying
+ * the unknown item was used in this file.
  */
 
-static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *name)
+static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *name, const char *srcfile)
 {
 	struct itemdef *ptr;
 
@@ -427,10 +433,11 @@ static /*@observer@*/ /*@null@*/struct itemdef *def_find (const char *name)
 	fprintf (shadow_logfd,
 	         _("configuration error - unknown item '%s' (notify administrator)\n"),
 	         name);
-	SYSLOG ((LOG_CRIT, "unknown configuration item `%s'", name));
+	if (srcfile != NULL)
+		SYSLOG ((LOG_CRIT, "shadow: unknown configuration item '%s' in '%s'", name, srcfile));
 
 out:
-	return (struct itemdef *) NULL;
+	return NULL;
 }
 
 /*
@@ -442,21 +449,12 @@ out:
 void setdef_config_file (const char* file)
 {
 #ifdef USE_ECONF
-	size_t len;
-	char* cp;
-
-	len = strlen(file) + strlen(sysconfdir) + 2;
-	cp = malloc(len);
-	if (cp == NULL)
-		exit (13);
-	snprintf(cp, len, "%s/%s", file, sysconfdir);
+	char  *cp;
+
+	xasprintf(&cp, "%s/%s", file, sysconfdir);
 	sysconfdir = cp;
 #ifdef VENDORDIR
-	len = strlen(file) + strlen(vendordir) + 2;
-	cp = malloc(len);
-	if (cp == NULL)
-		exit (13);
-	snprintf(cp, len, "%s/%s", file, vendordir);
+	xasprintf(&cp, "%s/%s", file, vendordir);
 	vendordir = cp;
 #endif
 #else
@@ -470,18 +468,13 @@ void setdef_config_file (const char* file)
  * Loads the user-configured options from the default configuration file
  */
 
+#ifdef USE_ECONF
 static void def_load (void)
 {
-#ifdef USE_ECONF
 	econf_file *defs_file = NULL;
 	econf_err error;
 	char **keys;
 	size_t key_number;
-#else
-	int i;
-	FILE *fp;
-	char buf[1024], *name, *value, *s;
-#endif
 
 	/*
 	 * Set the initialized flag.
@@ -489,8 +482,6 @@ static void def_load (void)
 	 */
 	def_loaded = true;
 
-#ifdef USE_ECONF
-
 	error = econf_readDirs (&defs_file, vendordir, sysconfdir, "login", "defs", " \t", "#");
 	if (error) {
 		if (error == ECONF_NOFILE)
@@ -510,7 +501,12 @@ static void def_load (void)
 	for (size_t i = 0; i < key_number; i++) {
 		char *value;
 
-		econf_getStringValue(defs_file, NULL, keys[i], &value);
+		error = econf_getStringValue(defs_file, NULL, keys[i], &value);
+		if (error) {
+			SYSLOG ((LOG_CRIT, "failed reading key %zu from econf [%s]",
+				i, econf_errString(error)));
+			exit (EXIT_FAILURE);
+		}
 
 		/*
 		 * Store the value in def_table.
@@ -519,12 +515,27 @@ static void def_load (void)
 		 * The error was already reported to the user and to
 		 * syslog. The tools will just use their default values.
 		 */
-		(void)putdef_str (keys[i], value);
+		(void)putdef_str (keys[i], value, econf_getPath(defs_file));
+
+		free(value);
 	}
 
 	econf_free (keys);
 	econf_free (defs_file);
-#else
+}
+#else /* USE_ECONF */
+static void def_load (void)
+{
+	int i;
+	FILE *fp;
+	char buf[1024], *name, *value, *s;
+
+	/*
+	 * Set the initialized flag.
+	 * (do it early to prevent recursion in putdef_str())
+	 */
+	def_loaded = true;
+
 	/*
 	 * Open the configuration definitions file.
 	 */
@@ -542,12 +553,12 @@ static void def_load (void)
 	/*
 	 * Go through all of the lines in the file.
 	 */
-	while (fgets (buf, (int) sizeof (buf), fp) != NULL) {
+	while (fgets (buf, sizeof (buf), fp) != NULL) {
 
 		/*
 		 * Trim trailing whitespace.
 		 */
-		for (i = (int) strlen (buf) - 1; i >= 0; --i) {
+		for (i = (ptrdiff_t) strlen (buf) - 1; i >= 0; --i) {
 			if (!isspace (buf[i])) {
 				break;
 			}
@@ -577,7 +588,7 @@ static void def_load (void)
 		 * The error was already reported to the user and to
 		 * syslog. The tools will just use their default values.
 		 */
-		(void)putdef_str (name, value);
+		(void)putdef_str (name, value, def_fname);
 	}
 
 	if (ferror (fp) != 0) {
@@ -588,8 +599,8 @@ static void def_load (void)
 	}
 
 	(void) fclose (fp);
-#endif
 }
+#endif /* USE_ECONF */
 
 
 #ifdef CKDEFS
@@ -602,7 +613,7 @@ int main (int argc, char **argv)
 	def_load ();
 
 	for (i = 0; i < NUMDEFS; ++i) {
-		d = def_find (def_table[i].name);
+		d = def_find (def_table[i].name, NULL);
 		if (NULL == d) {
 			printf ("error - lookup '%s' failed\n",
 			        def_table[i].name);
diff --git a/lib/getdef.h b/lib/getdef.h
index 2bd3fc5..f55e28b 100644
--- a/lib/getdef.h
+++ b/lib/getdef.h
@@ -16,7 +16,7 @@ extern int getdef_num (const char *, int);
 extern unsigned long getdef_ulong (const char *, unsigned long);
 extern unsigned int getdef_unum (const char *, unsigned int);
 extern /*@observer@*/ /*@null@*/const char *getdef_str (const char *);
-extern int putdef_str (const char *, const char *);
+extern int putdef_str (const char *, const char *, const char *);
 extern void setdef_config_file (const char* file);
 
 /* default UMASK value if not specified in /etc/login.defs */
diff --git a/libmisc/getgr_nam_gid.c b/lib/getgr_nam_gid.c
index 5294f50..fd0c217 100644
--- a/libmisc/getgr_nam_gid.c
+++ b/lib/getgr_nam_gid.c
@@ -23,20 +23,20 @@
  */
 extern /*@only@*//*@null@*/struct group *getgr_nam_gid (/*@null@*/const char *grname)
 {
-	long long int gid;
-	char *endptr;
+	char       *end;
+	long long  gid;
 
 	if (NULL == grname) {
 		return NULL;
 	}
 
 	errno = 0;
-	gid = strtoll (grname, &endptr, 10);
+	gid = strtoll(grname, &end, 10);
 	if (   ('\0' != *grname)
-	    && ('\0' == *endptr)
-	    && (ERANGE != errno)
+	    && ('\0' == *end)
+	    && (0 == errno)
 	    && (/*@+longintegral@*/gid == (gid_t)gid)/*@=longintegral@*/) {
-		return xgetgrgid ((gid_t) gid);
+		return xgetgrgid (gid);
 	}
 	return xgetgrnam (grname);
 }
diff --git a/lib/getlong.c b/lib/getlong.c
deleted file mode 100644
index ec4aa54..0000000
--- a/lib/getlong.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ident "$Id$"
-
-#include <stdlib.h>
-#include <errno.h>
-#include "prototypes.h"
-
-/*
- * getlong - extract a long integer provided by the numstr string in *result
- *
- * It supports decimal, hexadecimal or octal representations.
- *
- * Returns 0 on failure, 1 on success.
- */
-int getlong (const char *numstr, /*@out@*/long int *result)
-{
-	long val;
-	char *endptr;
-
-	errno = 0;
-	val = strtol (numstr, &endptr, 0);
-	if (('\0' == *numstr) || ('\0' != *endptr) || (ERANGE == errno)) {
-		return 0;
-	}
-
-	*result = val;
-	return 1;
-}
-
diff --git a/lib/getrange.c b/lib/getrange.c
new file mode 100644
index 0000000..466e908
--- /dev/null
+++ b/lib/getrange.c
@@ -0,0 +1,71 @@
+// SPDX-FileCopyrightText: 2008, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#ident "$Id: $"
+
+#include <ctype.h>
+#include <stdlib.h>
+
+#include "atoi/a2i.h"
+#include "defines.h"
+#include "prototypes.h"
+
+
+/*
+ * Parse a range and indicate if the range is valid.
+ * Valid ranges are in the form:
+ *     <long>          -> min=max=long         has_min  has_max
+ *     -<long>         -> max=long            !has_min  has_max
+ *     <long>-         -> min=long             has_min !has_max
+ *     <long1>-<long2> -> min=long1 max=long2  has_min  has_max
+ */
+int
+getrange(const char *range,
+         unsigned long *min, bool *has_min,
+         unsigned long *max, bool *has_max)
+{
+	const char  *end;
+
+	if (NULL == range)
+		return -1;
+
+	*min = 0;
+	*has_min = false;
+	*has_max = false;
+
+	if ('-' == range[0]) {
+		end = range + 1;
+		goto parse_max;
+	}
+
+	if (a2ul(min, range, &end, 10, 0, ULONG_MAX) == -1 && errno != ENOTSUP)
+		return -1;
+	*has_min = true;
+
+	switch (*end++) {
+	case '\0':
+		*has_max = true;
+		*max = *min;
+		return 0;  /* <long> */
+
+	case '-':
+		if ('\0' == *end)
+			return 0;  /* <long>- */
+parse_max:
+		if (!isdigit((unsigned char) *end))
+			return -1;
+
+		if (a2ul(max, end, NULL, 10, *min, ULONG_MAX) == -1)
+			return -1;
+		*has_max = true;
+
+		return 0;  /* <long>-<long>, or -<long> */
+
+	default:
+		return -1;
+	}
+}
diff --git a/lib/gettime.c b/lib/gettime.c
new file mode 100644
index 0000000..c61c88c
--- /dev/null
+++ b/lib/gettime.c
@@ -0,0 +1,47 @@
+// SPDX-FileCopyrightText: 2017, Chris Lamb
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include "atoi/a2i.h"
+#include "defines.h"
+#include "prototypes.h"
+#include "shadowlog.h"
+
+
+/*
+ * gettime() returns the time as the number of seconds since the Epoch
+ *
+ * Like time(), gettime() returns the time as the number of seconds since the
+ * Epoch, 1970-01-01 00:00:00 +0000 (UTC), except that if the SOURCE_DATE_EPOCH
+ * environment variable is exported it will use that instead.
+ */
+/*@observer@*/time_t
+gettime(void)
+{
+	char    *source_date_epoch;
+	FILE    *shadow_logfd = log_get_logfd();
+	time_t  fallback, epoch;
+
+	fallback = time (NULL);
+	source_date_epoch = shadow_getenv ("SOURCE_DATE_EPOCH");
+
+	if (!source_date_epoch)
+		return fallback;
+
+	if (a2i(time_t, &epoch, source_date_epoch, NULL, 10, 0, fallback) == -1) {
+		fprintf(shadow_logfd,
+		        _("Environment variable $SOURCE_DATE_EPOCH: a2i(\"%s\"): %s"),
+		        source_date_epoch, strerror(errno));
+		return fallback;
+	}
+	return epoch;
+}
diff --git a/lib/getulong.c b/lib/getulong.c
deleted file mode 100644
index 33250e3..0000000
--- a/lib/getulong.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ident "$Id: getlong.c 2763 2009-04-23 09:57:03Z nekral-guest $"
-
-#include <stdlib.h>
-#include <errno.h>
-#include "prototypes.h"
-
-/*
- * getulong - extract an unsigned long integer provided by the numstr string in *result
- *
- * It supports decimal, hexadecimal or octal representations.
- *
- * Returns 0 on failure, 1 on success.
- */
-int getulong (const char *numstr, /*@out@*/unsigned long int *result)
-{
-	unsigned long int val;
-	char *endptr;
-
-	errno = 0;
-	val = strtoul (numstr, &endptr, 0);
-	if (    ('\0' == *numstr)
-	     || ('\0' != *endptr)
-	     || (ERANGE == errno)
-	   ) {
-		return 0;
-	}
-
-	*result = val;
-	return 1;
-}
-
diff --git a/lib/groupio.c b/lib/groupio.c
index 357a30e..7b9d45f 100644
--- a/lib/groupio.c
+++ b/lib/groupio.c
@@ -15,12 +15,14 @@
 #include <assert.h>
 #include <stdio.h>
 
+#include "alloc.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "commonio.h"
 #include "getdef.h"
 #include "groupio.h"
 
+
 static /*@null@*/struct commonio_entry *merge_group_entries (
 	/*@null@*/ /*@returned@*/struct commonio_entry *gr1,
 	/*@null@*/struct commonio_entry *gr2);
@@ -34,7 +36,8 @@ static /*@null@*/ /*@only@*/void *group_dup (const void *ent)
 	return __gr_dup (gr);
 }
 
-static void group_free (/*@out@*/ /*@only@*/void *ent)
+static void
+group_free(/*@only@*/void *ent)
 {
 	struct group *gr = ent;
 
@@ -50,7 +53,7 @@ static const char *group_getname (const void *ent)
 
 static void *group_parse (const char *line)
 {
-	return (void *) sgetgrent (line);
+	return sgetgrent (line);
 }
 
 static int group_put (const void *ent, FILE * file)
@@ -159,7 +162,7 @@ int gr_open (int mode)
 
 int gr_update (const struct group *gr)
 {
-	return commonio_update (&group_db, (const void *) gr);
+	return commonio_update (&group_db, gr);
 }
 
 int gr_remove (const char *name)
@@ -209,17 +212,25 @@ void __gr_del_entry (const struct commonio_entry *ent)
 
 static int gr_cmp (const void *p1, const void *p2)
 {
+	const struct commonio_entry *const *ce1;
+	const struct commonio_entry *const *ce2;
+	const struct group *g1, *g2;
 	gid_t u1, u2;
 
-	if ((*(struct commonio_entry **) p1)->eptr == NULL) {
+	ce1 = p1;
+	g1 = (*ce1)->eptr;
+	if (g1 == NULL) {
 		return 1;
 	}
-	if ((*(struct commonio_entry **) p2)->eptr == NULL) {
+
+	ce2 = p2;
+	g2 = (*ce2)->eptr;
+	if (g2 == NULL) {
 		return -1;
 	}
 
-	u1 = ((struct group *) (*(struct commonio_entry **) p1)->eptr)->gr_gid;
-	u2 = ((struct group *) (*(struct commonio_entry **) p2)->eptr)->gr_gid;
+	u1 = g1->gr_gid;
+	u2 = g2->gr_gid;
 
 	if (u1 < u2) {
 		return -1;
@@ -247,8 +258,8 @@ static int group_open_hook (void)
 
 	for (gr1 = group_db.head; NULL != gr1; gr1 = gr1->next) {
 		for (gr2 = gr1->next; NULL != gr2; gr2 = gr2->next) {
-			struct group *g1 = (struct group *)gr1->eptr;
-			struct group *g2 = (struct group *)gr2->eptr;
+			struct group *g1 = gr1->eptr;
+			struct group *g2 = gr2->eptr;
 			if (NULL != g1 &&
 			    NULL != g2 &&
 			    0 == strcmp (g1->gr_name, g2->gr_name) &&
@@ -291,32 +302,28 @@ static /*@null@*/struct commonio_entry *merge_group_entries (
 	/*@null@*/ /*@returned@*/struct commonio_entry *gr1,
 	/*@null@*/struct commonio_entry *gr2)
 {
-	struct group *gptr1;
-	struct group *gptr2;
-	char **new_members;
-	size_t members = 0;
-	char *new_line;
-	size_t new_line_len, i;
+	char          *new_line;
+	char          **new_members;
+	size_t        i;
+	size_t        members = 0;
+	struct group  *gptr1;
+	struct group  *gptr2;
+
 	if (NULL == gr2 || NULL == gr1) {
 		errno = EINVAL;
 		return NULL;
 	}
 
-	gptr1 = (struct group *)gr1->eptr;
-	gptr2 = (struct group *)gr2->eptr;
+	gptr1 = gr1->eptr;
+	gptr2 = gr2->eptr;
 	if (NULL == gptr2 || NULL == gptr1) {
 		errno = EINVAL;
 		return NULL;
 	}
 
 	/* Concatenate the 2 lines */
-	new_line_len = strlen (gr1->line) + strlen (gr2->line) +1;
-	new_line = (char *)malloc (new_line_len + 1);
-	if (NULL == new_line) {
-		errno = ENOMEM;
+	if (asprintf(&new_line, "%s\n%s", gr1->line, gr2->line) == -1)
 		return NULL;
-	}
-	snprintf(new_line, new_line_len + 1, "%s\n%s", gr1->line, gr2->line);
 
 	/* Concatenate the 2 list of members */
 	for (i=0; NULL != gptr1->gr_mem[i]; i++);
@@ -333,10 +340,9 @@ static /*@null@*/struct commonio_entry *merge_group_entries (
 			members++;
 		}
 	}
-	new_members = (char **)calloc ( (members+1), sizeof(char*) );
+	new_members = CALLOC (members + 1, char *);
 	if (NULL == new_members) {
-		free (new_line);
-		errno = ENOMEM;
+		free(new_line);
 		return NULL;
 	}
 	for (i=0; NULL != gptr1->gr_mem[i]; i++) {
@@ -377,7 +383,7 @@ static int split_groups (unsigned int max_members)
 	struct commonio_entry *gr;
 
 	for (gr = group_db.head; NULL != gr; gr = gr->next) {
-		struct group *gptr = (struct group *)gr->eptr;
+		struct group *gptr = gr->eptr;
 		struct commonio_entry *new;
 		struct group *new_gptr;
 		unsigned int members = 0;
@@ -395,9 +401,8 @@ static int split_groups (unsigned int max_members)
 			continue;
 		}
 
-		new = (struct commonio_entry *) malloc (sizeof *new);
+		new = MALLOC(1, struct commonio_entry);
 		if (NULL == new) {
-			errno = ENOMEM;
 			return 0;
 		}
 		new->eptr = group_dup(gr->eptr);
@@ -406,7 +411,7 @@ static int split_groups (unsigned int max_members)
 			errno = ENOMEM;
 			return 0;
 		}
-		new_gptr = (struct group *)new->eptr;
+		new_gptr = new->eptr;
 		new->line = NULL;
 		new->changed = true;
 
diff --git a/lib/groupmem.c b/lib/groupmem.c
index c858b72..69d4435 100644
--- a/lib/groupmem.c
+++ b/lib/groupmem.c
@@ -12,6 +12,8 @@
 
 #ident "$Id$"
 
+#include "alloc.h"
+#include "memzero.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "groupio.h"
@@ -21,12 +23,11 @@
 	struct group *gr;
 	int i;
 
-	gr = (struct group *) malloc (sizeof *gr);
+	gr = CALLOC(1, struct group);
 	if (NULL == gr) {
 		return NULL;
 	}
 	/* The libc might define other fields. They won't be copied. */
-	memset (gr, 0, sizeof *gr);
 	gr->gr_gid = grent->gr_gid;
 	/*@-mustfreeonly@*/
 	gr->gr_name = strdup (grent->gr_name);
@@ -46,7 +47,7 @@
 	for (i = 0; grent->gr_mem[i]; i++);
 
 	/*@-mustfreeonly@*/
-	gr->gr_mem = (char **) malloc ((i + 1) * sizeof (char *));
+	gr->gr_mem = MALLOC(i + 1, char *);
 	/*@=mustfreeonly@*/
 	if (NULL == gr->gr_mem) {
 		gr_free(gr);
@@ -76,7 +77,8 @@ void gr_free_members (struct group *grent)
 	}
 }
 
-void gr_free (/*@out@*/ /*@only@*/struct group *grent)
+void
+gr_free(/*@only@*/struct group *grent)
 {
 	free (grent->gr_name);
 	if (NULL != grent->gr_passwd) {
@@ -86,33 +88,3 @@ void gr_free (/*@out@*/ /*@only@*/struct group *grent)
 	gr_free_members(grent);
 	free (grent);
 }
-
-bool gr_append_member(struct group *grp, char *member)
-{
-	int i;
-
-	if (NULL == grp->gr_mem || grp->gr_mem[0] == NULL) {
-		grp->gr_mem = (char **)malloc(2 * sizeof(char *));
-		if (!grp->gr_mem) {
-			return false;
-		}
-		grp->gr_mem[0] = strdup(member);
-		if (!grp->gr_mem[0]) {
-			return false;
-		}
-		grp->gr_mem[1] = NULL;
-		return true;
-	}
-
-	for (i = 0; grp->gr_mem[i]; i++) ;
-	grp->gr_mem = realloc(grp->gr_mem, (i + 2) * sizeof(char *));
-	if (NULL == grp->gr_mem) {
-		return false;
-	}
-	grp->gr_mem[i] = strdup(member);
-	if (NULL == grp->gr_mem[i]) {
-		return false;
-	}
-	grp->gr_mem[i + 1] = NULL;
-	return true;
-}
diff --git a/lib/gshadow.c b/lib/gshadow.c
index 2e12923..3c71bea 100644
--- a/lib/gshadow.c
+++ b/lib/gshadow.c
@@ -15,8 +15,12 @@
 #ident "$Id$"
 
 #include <stdio.h>
+#include <string.h>
+
+#include "alloc.h"
 #include "prototypes.h"
 #include "defines.h"
+
 static /*@null@*/FILE *shadow;
 static /*@null@*//*@only@*/char **members = NULL;
 static size_t nmembers = 0;
@@ -26,34 +30,6 @@ static struct sgrp sgroup;
 
 #define	FIELDS	4
 
-#ifdef	USE_NIS
-static bool nis_used;
-static bool nis_ignore;
-static enum { native, start, middle, native2 } nis_state;
-static bool nis_bound;
-static char *nis_domain;
-static char *nis_key;
-static int nis_keylen;
-static char *nis_val;
-static int nis_vallen;
-
-#define	IS_NISCHAR(c) ((c)=='+')
-#endif
-
-#ifdef	USE_NIS
-/*
- * bind_nis - bind to NIS server
- */
-
-static int bind_nis (void)
-{
-	if (yp_get_default_domain (&nis_domain))
-		return -1;
-
-	nis_bound = true;
-	return 0;
-}
-#endif
 
 static /*@null@*/char **build_list (char *s, char **list[], size_t * nlist)
 {
@@ -62,21 +38,16 @@ static /*@null@*/char **build_list (char *s, char **list[], size_t * nlist)
 
 	while (s != NULL && *s != '\0') {
 		size = (nelem + 1) * sizeof (ptr);
-		ptr = realloc (*list, size);
+		ptr = REALLOC(*list, size, char *);
 		if (NULL != ptr) {
-			ptr[nelem] = s;
+			ptr[nelem] = strsep(&s, ",");
 			nelem++;
 			*list = ptr;
 			*nlist = nelem;
-			s = strchr (s, ',');
-			if (NULL != s) {
-				*s = '\0';
-				s++;
-			}
 		}
 	}
 	size = (nelem + 1) * sizeof (ptr);
-	ptr = realloc (*list, size);
+	ptr = REALLOC(*list, size, char *);
 	if (NULL != ptr) {
 		ptr[nelem] = NULL;
 		*list = ptr;
@@ -86,9 +57,6 @@ static /*@null@*/char **build_list (char *s, char **list[], size_t * nlist)
 
 void setsgent (void)
 {
-#ifdef	USE_NIS
-	nis_state = native;
-#endif
 	if (NULL != shadow) {
 		rewind (shadow);
 	} else {
@@ -102,7 +70,7 @@ void endsgent (void)
 		(void) fclose (shadow);
 	}
 
-	shadow = (FILE *) 0;
+	shadow = NULL;
 }
 
 /*@observer@*//*@null@*/struct sgrp *sgetsgent (const char *string)
@@ -116,7 +84,7 @@ void endsgent (void)
 	size_t len = strlen (string) + 1;
 
 	if (len > sgrbuflen) {
-		char *buf = (char *) realloc (sgrbuf, sizeof (char) * len);
+		char *buf = REALLOC(sgrbuf, len, char);
 		if (NULL == buf) {
 			return NULL;
 		}
@@ -124,8 +92,7 @@ void endsgent (void)
 		sgrbuflen = len;
 	}
 
-	strncpy (sgrbuf, string, len);
-	sgrbuf[len-1] = '\0';
+	strcpy (sgrbuf, string);
 
 	cp = strrchr (sgrbuf, '\n');
 	if (NULL != cp) {
@@ -137,30 +104,16 @@ void endsgent (void)
 	 * all 4 of them and save the starting addresses in fields[].
 	 */
 
-	for (cp = sgrbuf, i = 0; (i < FIELDS) && (NULL != cp); i++) {
-		fields[i] = cp;
-		cp = strchr (cp, ':');
-		if (NULL != cp) {
-			*cp++ = '\0';
-		}
-	}
+	for (cp = sgrbuf, i = 0; (i < FIELDS) && (NULL != cp); i++)
+		fields[i] = strsep(&cp, ":");
 
 	/*
 	 * If there was an extra field somehow, or perhaps not enough,
 	 * the line is invalid.
 	 */
 
-	if ((NULL != cp) || (i != FIELDS)) {
-#ifdef	USE_NIS
-		if (!IS_NISCHAR (fields[0][0])) {
-			return 0;
-		} else {
-			nis_used = true;
-		}
-#else
+	if (NULL != cp || i != FIELDS)
 		return 0;
-#endif
-	}
 
 	sgroup.sg_name = fields[0];
 	sgroup.sg_passwd = fields[1];
@@ -195,7 +148,7 @@ void endsgent (void)
 	char *cp;
 
 	if (0 == buflen) {
-		buf = (char *) malloc (BUFSIZ);
+		buf = MALLOC(BUFSIZ, char);
 		if (NULL == buf) {
 			return NULL;
 		}
@@ -206,17 +159,12 @@ void endsgent (void)
 		return NULL;
 	}
 
-#ifdef	USE_NIS
-	while (fgetsx (buf, (int) buflen, fp) == buf)
-#else
-	if (fgetsx (buf, (int) buflen, fp) == buf)
-#endif
-	{
+	if (fgetsx(buf, buflen, fp) == buf) {
 		while (   ((cp = strrchr (buf, '\n')) == NULL)
 		       && (feof (fp) == 0)) {
 			size_t len;
 
-			cp = (char *) realloc (buf, buflen*2);
+			cp = REALLOC(buf, buflen * 2, char);
 			if (NULL == cp) {
 				return NULL;
 			}
@@ -234,11 +182,6 @@ void endsgent (void)
 		if (NULL != cp) {
 			*cp = '\0';
 		}
-#ifdef	USE_NIS
-		if (nis_ignore && IS_NISCHAR (buf[0])) {
-			continue;
-		}
-#endif
 		return (sgetsgent (buf));
 	}
 	return NULL;
@@ -250,96 +193,10 @@ void endsgent (void)
 
 /*@observer@*//*@null@*/struct sgrp *getsgent (void)
 {
-#ifdef	USE_NIS
-	bool nis_1_group = false;
-	struct sgrp *val;
-#endif
 	if (NULL == shadow) {
 		setsgent ();
 	}
-
-#ifdef	USE_NIS
-      again:
-	/*
-	 * See if we are reading from the local file.
-	 */
-
-	if (nis_state == native || nis_state == native2) {
-
-		/*
-		 * Get the next entry from the shadow group file.  Return
-		 * NULL right away if there is none.
-		 */
-
-		val = fgetsgent (shadow);
-		if (NULL == val) {
-			return 0;
-		}
-
-		/*
-		 * If this entry began with a NIS escape character, we have
-		 * to see if this is just a single group, or if the entire
-		 * map is being asked for.
-		 */
-
-		if (IS_NISCHAR (val->sg_name[0])) {
-			if ('\0' != val->sg_name[1]) {
-				nis_1_group = true;
-			} else {
-				nis_state = start;
-			}
-		}
-
-		/*
-		 * If this isn't a NIS group and this isn't an escape to go
-		 * use a NIS map, it must be a regular local group.
-		 */
-
-		if (!nis_1_group && (nis_state != start)) {
-			return val;
-		}
-
-		/*
-		 * If this is an escape to use an NIS map, switch over to
-		 * that bunch of code.
-		 */
-
-		if (nis_state == start) {
-			goto again;
-		}
-
-		/*
-		 * NEEDSWORK.  Here we substitute pieces-parts of this entry.
-		 */
-
-		return 0;
-	} else {
-		if (!nis_bound) {
-			if (bind_nis ()) {
-				nis_state = native2;
-				goto again;
-			}
-		}
-		if (nis_state == start) {
-			if (yp_first (nis_domain, "gshadow.byname", &nis_key,
-				      &nis_keylen, &nis_val, &nis_vallen)) {
-				nis_state = native2;
-				goto again;
-			}
-			nis_state = middle;
-		} else if (nis_state == middle) {
-			if (yp_next (nis_domain, "gshadow.byname", nis_key,
-				     nis_keylen, &nis_key, &nis_keylen,
-				     &nis_val, &nis_vallen)) {
-				nis_state = native2;
-				goto again;
-			}
-		}
-		return sgetsgent (nis_val);
-	}
-#else
 	return (fgetsgent (shadow));
-#endif
 }
 
 /*
@@ -350,63 +207,13 @@ void endsgent (void)
 {
 	struct sgrp *sgrp;
 
-#ifdef	USE_NIS
-	static char save_name[16];
-	int nis_disabled = 0;
-#endif
-
 	setsgent ();
 
-#ifdef	USE_NIS
-	if (nis_used) {
-	      again:
-
-		/*
-		 * Search the gshadow.byname map for this group.
-		 */
-
-		if (!nis_bound) {
-			bind_nis ();
-		}
-
-		if (nis_bound) {
-			char *cp;
-
-			if (yp_match (nis_domain, "gshadow.byname", name,
-				      strlen (name), &nis_val,
-				      &nis_vallen) == 0) {
-				cp = strchr (nis_val, '\n');
-				if (NULL != cp) {
-					*cp = '\0';
-				}
-
-				nis_state = middle;
-				sgrp = sgetsgent (nis_val);
-				if (NULL != sgrp) {
-					strcpy (save_name, sgrp->sg_name);
-					nis_key = save_name;
-					nis_keylen = strlen (save_name);
-				}
-				return sgrp;
-			}
-		}
-		nis_state = native2;
-	}
-#endif
-#ifdef	USE_NIS
-	if (nis_used) {
-		nis_ignore = true;
-		nis_disabled = true;
-	}
-#endif
-	while ((sgrp = getsgent ()) != (struct sgrp *) 0) {
+	while ((sgrp = getsgent ()) != NULL) {
 		if (strcmp (name, sgrp->sg_name) == 0) {
 			break;
 		}
 	}
-#ifdef	USE_NIS
-	nis_ignore = false;
-#endif
 	return sgrp;
 }
 
@@ -437,7 +244,7 @@ int putsgent (const struct sgrp *sgrp, FILE * fp)
 		size += strlen (sgrp->sg_mem[i]) + 1;
 	}
 
-	buf = malloc (size);
+	buf = MALLOC(size, char);
 	if (NULL == buf) {
 		return -1;
 	}
@@ -502,5 +309,5 @@ int putsgent (const struct sgrp *sgrp, FILE * fp)
 	return 0;
 }
 #else
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/*} SHADOWGRP */
diff --git a/libmisc/hushed.c b/lib/hushed.c
index 84b2f55..86c224f 100644
--- a/libmisc/hushed.c
+++ b/lib/hushed.c
@@ -18,6 +18,9 @@
 #include "defines.h"
 #include "prototypes.h"
 #include "getdef.h"
+#include "string/sprintf.h"
+
+
 /*
  * hushed - determine if a user receives login messages
  *
@@ -26,11 +29,11 @@
  */
 bool hushed (const char *username)
 {
-	struct passwd *pw;
-	const char *hushfile;
-	char buf[BUFSIZ];
-	bool found;
-	FILE *fp;
+	bool           found;
+	char           buf[BUFSIZ];
+	FILE           *fp;
+	const char     *hushfile;
+	struct passwd  *pw;
 
 	/*
 	 * Get the name of the file to use.  If this option is not
@@ -53,7 +56,7 @@ bool hushed (const char *username)
 	 */
 
 	if (hushfile[0] != '/') {
-		(void) snprintf (buf, sizeof (buf), "%s/%s", pw->pw_dir, hushfile);
+		SNPRINTF(buf, "%s/%s", pw->pw_dir, hushfile);
 		return (access (buf, F_OK) == 0);
 	}
 
@@ -66,7 +69,7 @@ bool hushed (const char *username)
 	if (NULL == fp) {
 		return false;
 	}
-	for (found = false; !found && (fgets (buf, (int) sizeof buf, fp) == buf);) {
+	for (found = false; !found && (fgets (buf, sizeof buf, fp) == buf);) {
 		buf[strcspn (buf, "\n")] = '\0';
 		found = (strcmp (buf, pw->pw_shell) == 0) ||
 		        (strcmp (buf, pw->pw_name) == 0);
diff --git a/libmisc/idmapping.c b/lib/idmapping.c
index 30eb89f..56c72ea 100644
--- a/libmisc/idmapping.c
+++ b/lib/idmapping.c
@@ -11,13 +11,20 @@
 #include <limits.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <strings.h>
+
+#include "alloc.h"
+#include "atoi/str2i.h"
 #include "prototypes.h"
+#include "string/stpeprintf.h"
 #include "idmapping.h"
 #if HAVE_SYS_CAPABILITY_H
 #include <sys/prctl.h>
 #include <sys/capability.h>
 #endif
 #include "shadowlog.h"
+#include "sizeof.h"
+
 
 struct map_range *get_map_ranges(int ranges, int argc, char **argv)
 {
@@ -29,21 +36,12 @@ struct map_range *get_map_ranges(int ranges, int argc, char **argv)
 		return NULL;
 	}
 
-	if (ranges != ((argc + 2) / 3)) {
+	if (ranges * 3 != argc) {
 		fprintf(log_get_logfd(), "%s: ranges: %u is wrong for argc: %d\n", log_get_progname(), ranges, argc);
 		return NULL;
 	}
 
-	if ((ranges * 3) > argc) {
-		fprintf(log_get_logfd(), "ranges: %u argc: %d\n",
-			ranges, argc);
-		fprintf(log_get_logfd(),
-			_( "%s: Not enough arguments to form %u mappings\n"),
-			log_get_progname(), ranges);
-		return NULL;
-	}
-
-	mappings = calloc(ranges, sizeof(*mappings));
+	mappings = CALLOC(ranges, struct map_range);
 	if (!mappings) {
 		fprintf(log_get_logfd(), _( "%s: Memory allocation failure\n"),
 			log_get_progname());
@@ -53,15 +51,15 @@ struct map_range *get_map_ranges(int ranges, int argc, char **argv)
 	/* Gather up the ranges from the command line */
 	mapping = mappings;
 	for (idx = 0, argidx = 0; idx < ranges; idx++, argidx += 3, mapping++) {
-		if (!getulong(argv[argidx + 0], &mapping->upper)) {
+		if (str2ul(&mapping->upper, argv[argidx + 0]) == -1) {
 			free(mappings);
 			return NULL;
 		}
-		if (!getulong(argv[argidx + 1], &mapping->lower)) {
+		if (str2ul(&mapping->lower, argv[argidx + 1]) == -1) {
 			free(mappings);
 			return NULL;
 		}
-		if (!getulong(argv[argidx + 2], &mapping->count)) {
+		if (str2ul(&mapping->count, argv[argidx + 2]) == -1) {
 			free(mappings);
 			return NULL;
 		}
@@ -99,7 +97,7 @@ struct map_range *get_map_ranges(int ranges, int argc, char **argv)
  *  8bytes --> 21 ascii estimated -> 18446744073709551616 (20 real)
  * 16bytes --> 39 ascii estimated -> 340282366920938463463374607431768211456 (39 real)
  */
-#define ULONG_DIGITS ((((sizeof(unsigned long) * CHAR_BIT) + 9)/10)*3)
+#define ULONG_DIGITS (((WIDTHOF(unsigned long) + 9)/10)*3)
 
 #if HAVE_SYS_CAPABILITY_H
 static inline bool maps_lower_root(int cap, int ranges, const struct map_range *mappings)
@@ -141,7 +139,7 @@ void write_mapping(int proc_dir_fd, int ranges, const struct map_range *mappings
 	int idx;
 	const struct map_range *mapping;
 	size_t bufsize;
-	char *buf, *pos;
+	char *buf, *pos, *end;
 	int fd;
 
 #if HAVE_SYS_CAPABILITY_H
@@ -172,7 +170,7 @@ void write_mapping(int proc_dir_fd, int ranges, const struct map_range *mappings
 	}
 
 	/* Lockdown new{g,u}idmap by dropping all unneeded capabilities. */
-	memset(data, 0, sizeof(data));
+	bzero(data, sizeof(data));
 	data[0].effective = CAP_TO_MASK(cap);
 	/*
 	 * When uid 0 from the ancestor userns is supposed to be mapped into
@@ -187,23 +185,22 @@ void write_mapping(int proc_dir_fd, int ranges, const struct map_range *mappings
 	}
 #endif
 
-	bufsize = ranges * ((ULONG_DIGITS + 1) * 3);
-	pos = buf = xmalloc(bufsize);
+	bufsize = (ULONG_DIGITS + 1) * 3 * ranges + 1;
+	pos = buf = XMALLOC(bufsize, char);
+	end = buf + bufsize;
 
 	/* Build the mapping command */
 	mapping = mappings;
 	for (idx = 0; idx < ranges; idx++, mapping++) {
 		/* Append this range to the string that will be written */
-		int written = snprintf(pos, bufsize - (pos - buf),
-			"%lu %lu %lu\n",
-			mapping->upper,
-			mapping->lower,
-			mapping->count);
-		if ((written <= 0) || (written >= (bufsize - (pos - buf)))) {
-			fprintf(log_get_logfd(), _("%s: snprintf failed!\n"), log_get_progname());
-			exit(EXIT_FAILURE);
-		}
-		pos += written;
+		pos = stpeprintf(pos, end, "%lu %lu %lu\n",
+		                 mapping->upper,
+		                 mapping->lower,
+		                 mapping->count);
+	}
+	if (pos == end || pos == NULL) {
+		fprintf(log_get_logfd(), _("%s: stpeprintf failed!\n"), log_get_progname());
+		exit(EXIT_FAILURE);
 	}
 
 	/* Write the mapping to the mapping file */
@@ -213,11 +210,15 @@ void write_mapping(int proc_dir_fd, int ranges, const struct map_range *mappings
 			log_get_progname(), map_file, strerror(errno));
 		exit(EXIT_FAILURE);
 	}
-	if (write(fd, buf, pos - buf) != (pos - buf)) {
+	if (write_full(fd, buf, pos - buf) == -1) {
 		fprintf(log_get_logfd(), _("%s: write to %s failed: %s\n"),
 			log_get_progname(), map_file, strerror(errno));
 		exit(EXIT_FAILURE);
 	}
-	close(fd);
+	if (close(fd) != 0 && errno != EINTR) {
+		fprintf(log_get_logfd(), _("%s: closing %s failed: %s\n"),
+			log_get_progname(), map_file, strerror(errno));
+		exit(EXIT_FAILURE);
+	}
 	free(buf);
 }
diff --git a/libmisc/idmapping.h b/lib/idmapping.h
index 46d4631..46d4631 100644
--- a/libmisc/idmapping.h
+++ b/lib/idmapping.h
diff --git a/libmisc/isexpired.c b/lib/isexpired.c
index ff20396..c275691 100644
--- a/libmisc/isexpired.c
+++ b/lib/isexpired.c
@@ -15,11 +15,13 @@
 #include <config.h>
 
 #include <sys/types.h>
-#include "prototypes.h"
-#include "defines.h"
 #include <pwd.h>
 #include <time.h>
 
+#include "adds.h"
+#include "defines.h"
+#include "prototypes.h"
+
 #ident "$Id$"
 
 
@@ -38,9 +40,9 @@
  */
 int isexpired (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 {
-	long now;
+	long  now;
 
-	now = (long) time ((time_t *) 0) / SCALE;
+	now = time(NULL) / DAY;
 
 	if (NULL == sp) {
 		return 0;
@@ -72,7 +74,8 @@ int isexpired (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 	if (   (sp->sp_lstchg > 0)
 	    && (sp->sp_max >= 0)
 	    && (sp->sp_inact >= 0)
-	    && (now >= (sp->sp_lstchg + sp->sp_max + sp->sp_inact))) {
+	    && (now >= addsl(sp->sp_lstchg, sp->sp_max, sp->sp_inact)))
+	{
 		return 2;
 	}
 
@@ -84,7 +87,7 @@ int isexpired (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 
 	if (   (-1 == sp->sp_lstchg)
 	    || (-1 == sp->sp_max)
-	    || (sp->sp_max >= ((10000L * DAY) / SCALE))) {
+	    || (sp->sp_max >= 10000)) {
 		return 0;
 	}
 
@@ -94,9 +97,9 @@ int isexpired (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 	 * the password has expired.
 	 */
 
-	if (now >= (sp->sp_lstchg + sp->sp_max)) {
+	if (now >= addsl(sp->sp_lstchg, sp->sp_max))
 		return 1;
-	}
+
 	return 0;
 }
 
diff --git a/libmisc/limits.c b/lib/limits.c
index fea85fe..813c082 100644
--- a/libmisc/limits.c
+++ b/lib/limits.c
@@ -28,11 +28,12 @@
 #include <pwd.h>
 #include "getdef.h"
 #include "shadowlog.h"
-#ifdef HAVE_SYS_RESOURCE_H
 #include <sys/resource.h>
-#define LIMITS
-#endif
-#ifdef LIMITS
+
+#include "atoi/str2i.h"
+#include "memzero.h"
+
+
 #ifndef LIMITS_FILE
 #define LIMITS_FILE "/etc/limits"
 #endif
@@ -48,8 +49,10 @@ static int setrlimit_value (unsigned int resource,
                             const char *value,
                             unsigned int multiplier)
 {
-	struct rlimit rlim;
-	rlim_t limit;
+	char           *end;
+	long           l;
+	rlim_t         limit;
+	struct rlimit  rlim;
 
 	/* The "-" is special, not belonging to a strange negative limit.
 	 * It is infinity, in a controlled way.
@@ -58,23 +61,18 @@ static int setrlimit_value (unsigned int resource,
 		limit = RLIM_INFINITY;
 	}
 	else {
-		/* We cannot use getlong here because it fails when there
+		/* We cannot use str2sl() here because it fails when there
 		 * is more to the value than just this number!
 		 * Also, we are limited to base 10 here (hex numbers will not
 		 * work with the limit string parser as is anyway)
 		 */
-		char *endptr;
-		long longlimit = strtol (value, &endptr, 10);
-		if ((0 == longlimit) && (value == endptr)) {
-			/* No argument at all. No-op.
-			 * FIXME: We could instead throw an error, though.
-			 */
-			return 0;
-		}
-		longlimit *= multiplier;
-		limit = (rlim_t)longlimit;
-		if (longlimit != limit)
-		{
+		errno = 0;
+		l = strtol(value, &end, 10);
+
+		if (value == end || errno != 0)
+			return 0;  // FIXME: We could instead throw an error, though.
+
+		if (__builtin_mul_overflow(l, multiplier, &limit)) {
 			/* FIXME: Again, silent error handling...
 			 * Wouldn't screaming make more sense?
 			 */
@@ -95,11 +93,11 @@ static int set_prio (const char *value)
 {
 	long prio;
 
-	if (   (getlong (value, &prio) == 0)
+	if (   (str2sl(&prio, value) == -1)
 	    || (prio != (int) prio)) {
 		return 0;
 	}
-	if (setpriority (PRIO_PROCESS, 0, (int) prio) != 0) {
+	if (setpriority (PRIO_PROCESS, 0, prio) != 0) {
 		return LOGIN_ERROR_RLIMIT;
 	}
 	return 0;
@@ -108,14 +106,14 @@ static int set_prio (const char *value)
 
 static int set_umask (const char *value)
 {
-	unsigned long int mask;
+	unsigned long  mask;
 
-	if (   (getulong (value, &mask) == 0)
+	if (   (str2ul(&mask, value) == -1)
 	    || (mask != (mode_t) mask)) {
 		return 0;
 	}
 
-	(void) umask ((mode_t) mask);
+	(void) umask (mask);
 	return 0;
 }
 
@@ -123,14 +121,9 @@ static int set_umask (const char *value)
 /* Counts the number of user logins and check against the limit */
 static int check_logins (const char *name, const char *maxlogins)
 {
-#ifdef USE_UTMPX
-	struct utmpx *ut;
-#else				/* !USE_UTMPX */
-	struct utmp *ut;
-#endif				/* !USE_UTMPX */
 	unsigned long limit, count;
 
-	if (getulong (maxlogins, &limit) == 0) {
+	if (str2ul(&limit, maxlogins) == -1) {
 		return 0;
 	}
 
@@ -139,38 +132,8 @@ static int check_logins (const char *name, const char *maxlogins)
 		return LOGIN_ERROR_LOGIN;
 	}
 
-	count = 0;
-#ifdef USE_UTMPX
-	setutxent ();
-	while ((ut = getutxent ()))
-#else				/* !USE_UTMPX */
-	setutent ();
-	while ((ut = getutent ()))
-#endif				/* !USE_UTMPX */
-	{
-		if (USER_PROCESS != ut->ut_type) {
-			continue;
-		}
-		if ('\0' == ut->ut_user[0]) {
-			continue;
-		}
-		if (strncmp (name, ut->ut_user, sizeof (ut->ut_user)) != 0) {
-			continue;
-		}
-		count++;
-		if (count > limit) {
-			break;
-		}
-	}
-#ifdef USE_UTMPX
-	endutxent ();
-#else				/* !USE_UTMPX */
-	endutent ();
-#endif				/* !USE_UTMPX */
-	/*
-	 * This is called after setutmp(), so the number of logins counted
-	 * includes the user who is currently trying to log in.
-	 */
+	count = active_sessions_count(name, limit);
+
 	if (count > limit) {
 		SYSLOG ((LOG_WARN,
 		         "Too many logins (max %lu) for %s\n",
@@ -243,34 +206,26 @@ static int do_user_limits (const char *buf, const char *name)
 
 	while ('\0' != *pp) {
 		switch (*pp++) {
-#ifdef RLIMIT_AS
 		case 'a':
 		case 'A':
 			/* RLIMIT_AS - max address space (KB) */
 			retval |= setrlimit_value (RLIMIT_AS, pp, 1024);
 			break;
-#endif
-#ifdef RLIMIT_CORE
 		case 'c':
 		case 'C':
 			/* RLIMIT_CORE - max core file size (KB) */
 			retval |= setrlimit_value (RLIMIT_CORE, pp, 1024);
 			break;
-#endif
-#ifdef RLIMIT_DATA
 		case 'd':
 		case 'D':
 			/* RLIMIT_DATA - max data size (KB) */
 			retval |= setrlimit_value (RLIMIT_DATA, pp, 1024);
 			break;
-#endif
-#ifdef RLIMIT_FSIZE
 		case 'f':
 		case 'F':
 			/* RLIMIT_FSIZE - Maximum filesize (KB) */
 			retval |= setrlimit_value (RLIMIT_FSIZE, pp, 1024);
 			break;
-#endif
 #ifdef RLIMIT_NICE
 		case 'i':
 		case 'I':
@@ -294,13 +249,11 @@ static int do_user_limits (const char *buf, const char *name)
 			retval |= setrlimit_value (RLIMIT_MEMLOCK, pp, 1024);
 			break;
 #endif
-#ifdef RLIMIT_NOFILE
 		case 'n':
 		case 'N':
 			/* RLIMIT_NOFILE - max number of open files */
 			retval |= setrlimit_value (RLIMIT_NOFILE, pp, 1);
 			break;
-#endif
 #ifdef RLIMIT_RTPRIO
 		case 'o':
 		case 'O':
@@ -319,20 +272,16 @@ static int do_user_limits (const char *buf, const char *name)
 			retval |= setrlimit_value (RLIMIT_RSS, pp, 1024);
 			break;
 #endif
-#ifdef RLIMIT_STACK
 		case 's':
 		case 'S':
 			/* RLIMIT_STACK - max stack size (KB) */
 			retval |= setrlimit_value (RLIMIT_STACK, pp, 1024);
 			break;
-#endif
-#ifdef RLIMIT_CPU
 		case 't':
 		case 'T':
 			/* RLIMIT_CPU - max CPU time (MIN) */
 			retval |= setrlimit_value (RLIMIT_CPU, pp, 60);
 			break;
-#endif
 #ifdef RLIMIT_NPROC
 		case 'u':
 		case 'U':
@@ -409,11 +358,11 @@ static int setup_user_limits (const char *uname)
 	char tempbuf[1024];
 
 	/* init things */
-	memzero (buf, sizeof (buf));
-	memzero (name, sizeof (name));
-	memzero (limits, sizeof (limits));
-	memzero (deflimits, sizeof (deflimits));
-	memzero (tempbuf, sizeof (tempbuf));
+	MEMZERO(buf);
+	MEMZERO(name);
+	MEMZERO(limits);
+	MEMZERO(deflimits);
+	MEMZERO(tempbuf);
 
 	/* start the checks */
 	fil = fopen (LIMITS_FILE, "r");
@@ -430,7 +379,7 @@ static int setup_user_limits (const char *uname)
 		if (('#' == buf[0]) || ('\n' == buf[0])) {
 			continue;
 		}
-		memzero (tempbuf, sizeof (tempbuf));
+		MEMZERO(tempbuf);
 		/* a valid line should have a username, then spaces,
 		 * then limits
 		 * we allow the format:
@@ -479,7 +428,6 @@ static int setup_user_limits (const char *uname)
 	}
 	return do_user_limits (limits, uname);
 }
-#endif				/* LIMITS */
 
 
 static void setup_usergroups (const struct passwd *info)
@@ -523,7 +471,6 @@ void setup_limits (const struct passwd *info)
 	 */
 
 	if (getdef_bool ("QUOTAS_ENAB")) {
-#ifdef LIMITS
 		if (info->pw_uid != 0) {
 			if ((setup_user_limits (info->pw_name) & LOGIN_ERROR_LOGIN) != 0) {
 				(void) fputs (_("Too many logins.\n"), log_get_logfd());
@@ -531,18 +478,18 @@ void setup_limits (const struct passwd *info)
 				exit (EXIT_FAILURE);
 			}
 		}
-#endif
 		for (cp = info->pw_gecos; cp != NULL; cp = strchr (cp, ',')) {
 			if (',' == *cp) {
 				cp++;
 			}
 
 			if (strncmp (cp, "pri=", 4) == 0) {
-				long int inc;
-				if (   (getlong (cp + 4, &inc) == 1)
+				long  inc;
+
+				if (   (str2sl(&inc, cp + 4) == 0)
 				    && (inc >= -20) && (inc <= 20)) {
 					errno = 0;
-					if (   (nice ((int) inc) != -1)
+					if (   (nice (inc) != -1)
 					    || (0 != errno)) {
 						continue;
 					}
@@ -556,10 +503,10 @@ void setup_limits (const struct passwd *info)
 				continue;
 			}
 			if (strncmp (cp, "ulimit=", 7) == 0) {
-				long int blocks;
-				if (   (getlong (cp + 7, &blocks) == 0)
+				long  blocks;
+				if (   (str2sl(&blocks, cp + 7) == -1)
 				    || (blocks != (int) blocks)
-				    || (set_filesize_limit ((int) blocks) != 0)) {
+				    || (set_filesize_limit (blocks) != 0)) {
 					SYSLOG ((LOG_WARN,
 					         "Can't set the ulimit for user %s",
 					         info->pw_name));
@@ -567,14 +514,15 @@ void setup_limits (const struct passwd *info)
 				continue;
 			}
 			if (strncmp (cp, "umask=", 6) == 0) {
-				unsigned long int mask;
-				if (   (getulong (cp + 6, &mask) == 0)
+				unsigned long  mask;
+
+				if (   (str2ul(&mask, cp + 6) == -1)
 				    || (mask != (mode_t) mask)) {
 					SYSLOG ((LOG_WARN,
 					         "Can't set umask value for user %s",
 					         info->pw_name));
 				} else {
-					(void) umask ((mode_t) mask);
+					(void) umask (mask);
 				}
 
 				continue;
@@ -584,6 +532,6 @@ void setup_limits (const struct passwd *info)
 }
 
 #else				/* !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !USE_PAM */
 
diff --git a/libmisc/list.c b/lib/list.c
index 9d7ec77..9fc6608 100644
--- a/libmisc/list.c
+++ b/lib/list.c
@@ -11,6 +11,8 @@
 #ident "$Id$"
 
 #include <assert.h>
+
+#include "alloc.h"
 #include "prototypes.h"
 #include "defines.h"
 /*
@@ -20,7 +22,8 @@
  *	name, and if not present it is added to a freshly allocated
  *	list of users.
  */
-/*@only@*/ /*@out@*/char **add_list (/*@returned@*/ /*@only@*/char **list, const char *member)
+/*@only@*/char **
+add_list(/*@returned@*/ /*@only@*/char **list, const char *member)
 {
 	int i;
 	char **tmp;
@@ -33,7 +36,7 @@
 	 * pointer if it is present.
 	 */
 
-	for (i = 0; list[i] != (char *) 0; i++) {
+	for (i = 0; list[i] != NULL; i++) {
 		if (strcmp (list[i], member) == 0) {
 			return list;
 		}
@@ -44,7 +47,7 @@
 	 * old entries, and the new entries as well.
 	 */
 
-	tmp = (char **) xmalloc ((i + 2) * sizeof member);
+	tmp = XMALLOC(i + 2, char *);
 
 	/*
 	 * Copy the original list to the new list, then append the
@@ -52,12 +55,12 @@
 	 * is returned to the invoker.
 	 */
 
-	for (i = 0; list[i] != (char *) 0; i++) {
+	for (i = 0; list[i] != NULL; i++) {
 		tmp[i] = list[i];
 	}
 
 	tmp[i] = xstrdup (member);
-	tmp[i+1] = (char *) 0;
+	tmp[i+1] = NULL;
 
 	return tmp;
 }
@@ -70,7 +73,8 @@
  *	list of users.
  */
 
-/*@only@*/ /*@out@*/char **del_list (/*@returned@*/ /*@only@*/char **list, const char *member)
+/*@only@*/char **
+del_list(/*@returned@*/ /*@only@*/char **list, const char *member)
 {
 	int i, j;
 	char **tmp;
@@ -83,7 +87,7 @@
 	 * pointer if it is not present.
 	 */
 
-	for (i = j = 0; list[i] != (char *) 0; i++) {
+	for (i = j = 0; list[i] != NULL; i++) {
 		if (strcmp (list[i], member) != 0) {
 			j++;
 		}
@@ -98,7 +102,7 @@
 	 * old entries.
 	 */
 
-	tmp = (char **) xmalloc ((j + 1) * sizeof member);
+	tmp = XMALLOC(j + 1, char *);
 
 	/*
 	 * Copy the original list except the deleted members to the
@@ -106,14 +110,14 @@
 	 * is returned to the invoker.
 	 */
 
-	for (i = j = 0; list[i] != (char *) 0; i++) {
+	for (i = j = 0; list[i] != NULL; i++) {
 		if (strcmp (list[i], member) != 0) {
 			tmp[j] = list[i];
 			j++;
 		}
 	}
 
-	tmp[j] = (char *) 0;
+	tmp[j] = NULL;
 
 	return tmp;
 }
@@ -124,7 +128,8 @@
  * function with list of members, the list elements are not enforced to be
  * constant strings here.
  */
-/*@only@*/ /*@out@*/char **dup_list (char *const *list)
+/*@only@*/char **
+dup_list(char *const *list)
 {
 	int i;
 	char **tmp;
@@ -133,7 +138,7 @@
 
 	for (i = 0; NULL != list[i]; i++);
 
-	tmp = (char **) xmalloc ((i + 1) * sizeof (char *));
+	tmp = XMALLOC(i + 1, char *);
 
 	i = 0;
 	while (NULL != *list) {
@@ -142,7 +147,7 @@
 		list++;
 	}
 
-	tmp[i] = (char *) 0;
+	tmp[i] = NULL;
 	return tmp;
 }
 
@@ -210,14 +215,14 @@ bool is_on_list (char *const *list, const char *member)
 	 * Allocate the array we're going to store the pointers into.
 	 */
 
-	array = (char **) xmalloc (sizeof (char *) * i);
+	array = XMALLOC(i, char *);
 
 	/*
 	 * Empty list is special - 0 members, not 1 empty member.  --marekm
 	 */
 
 	if ('\0' == *members) {
-		*array = (char *) 0;
+		*array = NULL;
 		free (members);
 		return array;
 	}
@@ -227,18 +232,9 @@ bool is_on_list (char *const *list, const char *member)
 	 * array of pointers.
 	 */
 
-	for (cp = members, i = 0;; i++) {
-		array[i] = cp;
-		cp2 = strchr (cp, ',');
-		if (NULL != cp2) {
-			*cp2 = '\0';
-			cp2++;
-			cp = cp2;
-		} else {
-			array[i + 1] = (char *) 0;
-			break;
-		}
-	}
+	for (cp = members, i = 0; cp != NULL; i++)
+		array[i] = strsep(&cp, ",");
+	array[i] = NULL;
 
 	/*
 	 * Return the new array of pointers
diff --git a/lib/lockpw.c b/lib/lockpw.c
index aaa317f..15e7c8f 100644
--- a/lib/lockpw.c
+++ b/lib/lockpw.c
@@ -81,5 +81,5 @@ int ulckpwdf (void)
 	return (pw_unlock () && spw_unlock ())? 0 : -1;
 }
 #else
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif
diff --git a/libmisc/log.c b/lib/log.c
index a220be0..9f54d45 100644
--- a/libmisc/log.c
+++ b/lib/log.c
@@ -17,14 +17,18 @@
 #include <time.h>
 #include "defines.h"
 #include <lastlog.h>
+#include "memzero.h"
 #include "prototypes.h"
+#include "string/strncpy.h"
+#include "string/strtcpy.h"
+
 
 /*
  * dolastlog - create lastlog entry
  *
  *	A "last login" entry is created for the user being logged in.  The
  *	UID is extracted from the global (struct passwd) entry and the
- *	TTY information is gotten from the (struct utmp).
+ *	TTY information is gotten from the (struct utmpx).
  */
 void dolastlog (
 	struct lastlog *ll,
@@ -67,7 +71,7 @@ void dolastlog (
 	 * the way we read the old one in.
 	 */
 
-	if (read (fd, (void *) &newlog, sizeof newlog) != (ssize_t) sizeof newlog) {
+	if (read (fd, &newlog, sizeof newlog) != (ssize_t) sizeof newlog) {
 		memzero (&newlog, sizeof newlog);
 	}
 	if (NULL != ll) {
@@ -77,17 +81,29 @@ void dolastlog (
 	ll_time = newlog.ll_time;
 	(void) time (&ll_time);
 	newlog.ll_time = ll_time;
-	strncpy (newlog.ll_line, line, sizeof (newlog.ll_line) - 1);
+	STRTCPY(newlog.ll_line, line);
 #if HAVE_LL_HOST
-	strncpy (newlog.ll_host, host, sizeof (newlog.ll_host) - 1);
+	STRNCPY(newlog.ll_host, host);
 #endif
 	if (   (lseek (fd, offset, SEEK_SET) != offset)
-	    || (write (fd, (const void *) &newlog, sizeof newlog) != (ssize_t) sizeof newlog)
-	    || (close (fd) != 0)) {
-		SYSLOG ((LOG_WARN,
-		         "Can't write lastlog entry for UID %lu in %s.",
-		         (unsigned long) pw->pw_uid, LASTLOG_FILE));
+	    || (write_full(fd, &newlog, sizeof newlog) == -1)) {
+		goto err_write;
+	}
+
+	if (close (fd) != 0 && errno != EINTR) {
+		goto err_close;
+	}
+
+	return;
+
+err_write:
+	{
+		int saved_errno = errno;
 		(void) close (fd);
+		errno = saved_errno;
 	}
+err_close:
+	SYSLOG ((LOG_WARN,
+	         "Can't write lastlog entry for UID %lu in %s: %m",
+	         (unsigned long) pw->pw_uid, LASTLOG_FILE));
 }
-
diff --git a/lib/logind.c b/lib/logind.c
new file mode 100644
index 0000000..ba7278f
--- /dev/null
+++ b/lib/logind.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-FileCopyrightText:  2023, Iker Pedrosa <ipedrosa@redhat.com>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "attr.h"
+#include "defines.h"
+#include "prototypes.h"
+
+#include <systemd/sd-login.h>
+
+int get_session_host (char **out)
+{
+    char *host = NULL;
+    char *session = NULL;
+    int ret;
+
+    ret = sd_pid_get_session (getpid(), &session);
+    if (ret < 0) {
+        return ret;
+    }
+    ret = sd_session_get_remote_host (session, &host);
+    if (ret < 0) {
+        goto done;
+    }
+
+    *out = host;
+
+done:
+    free (session);
+    return ret;
+}
+
+unsigned long active_sessions_count(const char *name, MAYBE_UNUSED unsigned long limit)
+{
+    struct passwd *pw;
+    unsigned long count = 0;
+
+    pw = prefix_getpwnam(name);
+    if (pw == NULL) {
+        return 0;
+    }
+
+    count = sd_uid_get_sessions(pw->pw_uid, 0, NULL);
+
+    return count;
+}
diff --git a/lib/loginprompt.c b/lib/loginprompt.c
new file mode 100644
index 0000000..9b2aa25
--- /dev/null
+++ b/lib/loginprompt.c
@@ -0,0 +1,111 @@
+/*
+ * SPDX-FileCopyrightText: 1989 - 1993, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008 - 2011, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <assert.h>
+#include <stdio.h>
+#include <signal.h>
+
+#include "alloc.h"
+#include "attr.h"
+#include "memzero.h"
+#include "prototypes.h"
+#include "defines.h"
+#include "getdef.h"
+
+static void login_exit (MAYBE_UNUSED int sig)
+{
+	_exit (EXIT_FAILURE);
+}
+
+/*
+ * login_prompt - prompt the user for their login name
+ *
+ * login_prompt() displays the standard login prompt.  If ISSUE_FILE
+ * is set in login.defs, this file is displayed before the prompt.
+ */
+
+void login_prompt (char *name, int namesize)
+{
+	char buf[1024];
+
+	char *cp;
+	int i;
+	FILE *fp;
+	const char *fname = getdef_str ("ISSUE_FILE");
+
+	sighandler_t sigquit;
+	sighandler_t sigtstp;
+
+	/*
+	 * There is a small chance that a QUIT character will be part of
+	 * some random noise during a prompt.  Deal with this by exiting
+	 * instead of core dumping.  Do the same thing for SIGTSTP.
+	 */
+
+	sigquit = signal (SIGQUIT, login_exit);
+	sigtstp = signal (SIGTSTP, login_exit);
+
+	/*
+	 * See if the user has configured the issue file to
+	 * be displayed and display it before the prompt.
+	 */
+
+	if (NULL != fname) {
+		fp = fopen (fname, "r");
+		if (NULL != fp) {
+			while ((i = getc (fp)) != EOF) {
+				(void) putc (i, stdout);
+			}
+
+			(void) fclose (fp);
+		}
+	}
+	(void) gethostname (buf, sizeof buf);
+	printf (_("\n%s login: "), buf);
+	(void) fflush (stdout);
+
+	/*
+	 * Read the user's response.  The trailing newline will be
+	 * removed.
+	 */
+
+	MEMZERO(buf);
+	if (fgets (buf, sizeof buf, stdin) != buf) {
+		exit (EXIT_FAILURE);
+	}
+
+	cp = strchr (buf, '\n');
+	if (NULL == cp) {
+		exit (EXIT_FAILURE);
+	}
+	*cp = '\0';		/* remove \n [ must be there ] */
+
+	/*
+	 * Skip leading whitespace.  This makes "  username" work right.
+	 * Then copy the rest (up to the end) into the username.
+	 */
+
+	for (cp = buf; *cp == ' ' || *cp == '\t'; cp++);
+
+	for (i = 0; i < namesize - 1 && *cp != '\0'; name[i++] = *cp++);
+
+	name[i] = '\0';
+
+	/*
+	 * Set the SIGQUIT handler back to its original value
+	 */
+
+	(void) signal (SIGQUIT, sigquit);
+	(void) signal (SIGTSTP, sigtstp);
+}
+
diff --git a/libmisc/mail.c b/lib/mail.c
index 647f879..d14bdb1 100644
--- a/libmisc/mail.c
+++ b/lib/mail.c
@@ -15,7 +15,9 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "alloc.h"
 #include "getdef.h"
+#include "string/sprintf.h"
 
 #ident "$Id$"
 
@@ -34,22 +36,18 @@ void mailcheck (void)
 	 */
 	mailbox = getenv ("MAILDIR");
 	if (NULL != mailbox) {
-		char *newmail;
-		size_t len = strlen (mailbox) + 5;
-		int wlen;
+		char  *newmail;
 
-		newmail = xmalloc (len);
-		wlen = snprintf (newmail, len, "%s/new", mailbox);
-		assert (wlen == (int) len - 1);
+		xasprintf(&newmail, "%s/new", mailbox);
 
 		if (stat (newmail, &statbuf) != -1 && statbuf.st_size != 0) {
 			if (statbuf.st_mtime > statbuf.st_atime) {
-				free (newmail);
+				free(newmail);
 				(void) puts (_("You have new mail."));
 				return;
 			}
 		}
-		free (newmail);
+		free(newmail);
 	}
 
 	mailbox = getenv ("MAIL");
diff --git a/lib/memzero.c b/lib/memzero.c
new file mode 100644
index 0000000..8979e5f
--- /dev/null
+++ b/lib/memzero.c
@@ -0,0 +1,17 @@
+/*
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <stddef.h>
+
+#include "memzero.h"
+
+
+extern inline void memzero(void *ptr, size_t size);
+extern inline void strzero(char *s);
diff --git a/lib/memzero.h b/lib/memzero.h
new file mode 100644
index 0000000..1137e83
--- /dev/null
+++ b/lib/memzero.h
@@ -0,0 +1,49 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023, Christian Göttsche <cgzones@googlemail.com>
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIBMISC_MEMZERO_H_
+#define SHADOW_INCLUDE_LIBMISC_MEMZERO_H_
+
+
+#include <config.h>
+
+#include <stddef.h>
+#include <string.h>
+#include <strings.h>
+
+#include "sizeof.h"
+
+
+#define MEMZERO(arr)  memzero(arr, SIZEOF_ARRAY(arr))
+
+
+inline void memzero(void *ptr, size_t size);
+inline void strzero(char *s);
+
+
+inline void
+memzero(void *ptr, size_t size)
+{
+#if defined(HAVE_MEMSET_EXPLICIT)
+	memset_explicit(ptr, 0, size);
+#elif defined(HAVE_EXPLICIT_BZERO)
+	explicit_bzero(ptr, size);
+#else
+	bzero(ptr, size);
+	__asm__ __volatile__ ("" : : "r"(ptr) : "memory");
+#endif
+}
+
+
+inline void
+strzero(char *s)
+{
+	memzero(s, strlen(s));
+}
+
+
+#endif  // include guard
diff --git a/libmisc/motd.c b/lib/motd.c
index 7f7e523..d1d5bf6 100644
--- a/libmisc/motd.c
+++ b/lib/motd.c
@@ -12,9 +12,11 @@
 #ident "$Id$"
 
 #include <stdio.h>
-#include "prototypes.h"
+
+#include "alloc.h"
 #include "defines.h"
 #include "getdef.h"
+#include "prototypes.h"
 /*
  * motd -- output the /etc/motd file
  *
diff --git a/lib/must_be.h b/lib/must_be.h
new file mode 100644
index 0000000..a7365cb
--- /dev/null
+++ b/lib/must_be.h
@@ -0,0 +1,99 @@
+/*
+ * SPDX-FileCopyrightText: 2019-2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIBMISC_MUST_BE_H_
+#define SHADOW_INCLUDE_LIBMISC_MUST_BE_H_
+
+
+#include <config.h>
+
+#include <assert.h>
+
+
+/*
+ * SYNOPSIS
+ *	int must_be(bool e);
+ *
+ * ARGUMENTS
+ *	e	Expression to be asserted.
+ *
+ * DESCRIPTION
+ *	This macro fails compilation if 'e' is false.  If 'e' is true,
+ *	it returns (int) 0, so it doesn't affect the expression in which
+ *	it is contained.
+ *
+ *	This macro is similar to static_assert(3).  While
+ *	static_assert(3) can only be used where a statement is allowed,
+ *	this must_be() macro can be used wherever an expression is
+ *	allowed.
+ *
+ * RETURN VALUE
+ *	0
+ *
+ * ERRORS
+ *	If 'e' is false, the compilation will fail, as when using
+ *	static_assert(3).
+ *
+ * EXAMPLES
+ *	#define must_be_array(a)  must_be(is_array(a))
+ *
+ *	#define NITEMS(a)  (sizeof(a) / sizeof(*(a)) + must_be_array(a))
+ *
+ *	int foo[42];
+ *	int bar[NITEMS(foo)];
+ */
+
+
+#define must_be(e)                                                            \
+(                                                                             \
+	0 * (int) sizeof(                                                     \
+		struct {                                                      \
+			static_assert(e, "");                                 \
+			int ISO_C_forbids_a_struct_with_no_members_;          \
+		}                                                             \
+	)                                                                     \
+)
+
+
+/*
+ * SYNOPSIS
+ *	int must_be_array(a);
+ *
+ * ARGUMENTS
+ *	a	Array.
+ *
+ * DESCRIPTION
+ *	This macro fails compilation if 'a' is not an array.  It is
+ *	useful in macros that accept an array as a parameter, where this
+ *	macro can validate the macro argument.  It prevent passing a
+ *	pointer to such macros, which would otherwise produce silent
+ *	bugs.
+ *
+ * RETURN VALUE
+ *	0
+ *
+ * ERRORS
+ *	If 'a' is not an array, the compilation will fail.
+ *
+ * EXAMPLES
+ *	int a[10];
+ *	int *p;
+ *
+ *	must_be_array(a);  // Ok
+ *	must_be_array(p);  // Compile-time error
+ *
+ * SEE ALSO
+ *	must_be()
+ */
+
+
+#define is_same_type(a, b)    __builtin_types_compatible_p(a, b)
+#define is_same_typeof(a, b)  is_same_type(typeof(a), typeof(b))
+#define is_array(a)           (!is_same_typeof((a), &(a)[0]))
+#define must_be_array(a)      must_be(is_array(a))
+
+
+#endif  // include guard
diff --git a/libmisc/myname.c b/lib/myname.c
index 1b02617..1b02617 100644
--- a/libmisc/myname.c
+++ b/lib/myname.c
diff --git a/lib/nscd.c b/lib/nscd.c
index 2c2251a..451a5a3 100644
--- a/lib/nscd.c
+++ b/lib/nscd.c
@@ -53,6 +53,6 @@ int nscd_flush_cache (const char *service)
 	return 0;
 }
 #else				/* USE_NSCD */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* USE_NSCD */
 
diff --git a/lib/nss.c b/lib/nss.c
index 23d0518..779d825 100644
--- a/lib/nss.c
+++ b/lib/nss.c
@@ -1,3 +1,5 @@
+#include <config.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <dlfcn.h>
@@ -6,10 +8,14 @@
 #include <strings.h>
 #include <ctype.h>
 #include <stdatomic.h>
+
+#include "alloc.h"
 #include "prototypes.h"
 #include "../libsubid/subid.h"
 #include "shadowlog_internal.h"
 #include "shadowlog.h"
+#include "string/sprintf.h"
+
 
 #define NSSWITCH "/etc/nsswitch.conf"
 
@@ -40,10 +46,12 @@ static void nss_exit(void) {
 
 // nsswitch_path is an argument only to support testing.
 void nss_init(const char *nsswitch_path) {
-	FILE *nssfp = NULL;
-	char *line = NULL, *p, *token, *saveptr;
-	size_t len = 0;
-	FILE *shadow_logfd = log_get_logfd();
+	char    *line = NULL, *p, *token, *saveptr;
+	char    libname[64];
+	FILE    *nssfp = NULL;
+	FILE    *shadow_logfd = log_get_logfd();
+	void    *h;
+	size_t  len = 0;
 
 	if (atomic_flag_test_and_set(&nss_init_started)) {
 		// Another thread has started nss_init, wait for it to complete
@@ -59,82 +67,78 @@ void nss_init(const char *nsswitch_path) {
 	//   subid:	files
 	nssfp = fopen(nsswitch_path, "r");
 	if (!nssfp) {
+		if (errno != ENOENT)
+			fprintf(shadow_logfd, "Failed opening %s: %m\n", nsswitch_path);
+
 		atomic_store(&nss_init_completed, true);
 		return;
 	}
-	while ((getline(&line, &len, nssfp)) != -1) {
-		if (line[0] == '\0' || line[0] == '#')
+	p = NULL;
+	while (getline(&line, &len, nssfp) != -1) {
+		if (line[0] == '#')
 			continue;
 		if (strlen(line) < 8)
 			continue;
 		if (strncasecmp(line, "subid:", 6) != 0)
 			continue;
 		p = &line[6];
-		while ((*p) && isspace(*p))
+		while (isspace(*p))
 			p++;
-		if (!*p)
-			continue;
-		for (token = strtok_r(p, " \n\t", &saveptr);
-		     token;
-		     token = strtok_r(NULL, " \n\t", &saveptr)) {
-			char libname[65];
-			void *h;
-			if (strcmp(token, "files") == 0) {
-				subid_nss = NULL;
-				goto done;
-			}
-			if (strlen(token) > 50) {
-				fprintf(shadow_logfd, "Subid NSS module name too long (longer than 50 characters): %s\n", token);
-				fprintf(shadow_logfd, "Using files\n");
-				subid_nss = NULL;
-				goto done;
-			}
-			snprintf(libname, 64,  "libsubid_%s.so", token);
-			h = dlopen(libname, RTLD_LAZY);
-			if (!h) {
-				fprintf(shadow_logfd, "Error opening %s: %s\n", libname, dlerror());
-				fprintf(shadow_logfd, "Using files\n");
-				subid_nss = NULL;
-				goto done;
-			}
-			subid_nss = malloc(sizeof(*subid_nss));
-			if (!subid_nss) {
-				dlclose(h);
-				goto done;
-			}
-			subid_nss->has_range = dlsym(h, "shadow_subid_has_range");
-			if (!subid_nss->has_range) {
-				fprintf(shadow_logfd, "%s did not provide @has_range@\n", libname);
-				dlclose(h);
-				free(subid_nss);
-				subid_nss = NULL;
-				goto done;
-			}
-			subid_nss->list_owner_ranges = dlsym(h, "shadow_subid_list_owner_ranges");
-			if (!subid_nss->list_owner_ranges) {
-				fprintf(shadow_logfd, "%s did not provide @list_owner_ranges@\n", libname);
-				dlclose(h);
-				free(subid_nss);
-				subid_nss = NULL;
-				goto done;
-			}
-			subid_nss->find_subid_owners = dlsym(h, "shadow_subid_find_subid_owners");
-			if (!subid_nss->find_subid_owners) {
-				fprintf(shadow_logfd, "%s did not provide @find_subid_owners@\n", libname);
-				dlclose(h);
-				free(subid_nss);
-				subid_nss = NULL;
-				goto done;
-			}
-			subid_nss->handle = h;
-			goto done;
-		}
+		if (*p != '\0')
+			break;
+		p = NULL;
+	}
+	if (p == NULL) {
+		goto null_subid;
+	}
+	token = strtok_r(p, " \n\t", &saveptr);
+	if (token == NULL) {
 		fprintf(shadow_logfd, "No usable subid NSS module found, using files\n");
 		// subid_nss has to be null here, but to ease reviews:
-		free(subid_nss);
-		subid_nss = NULL;
-		goto done;
+		goto null_subid;
 	}
+	if (strcmp(token, "files") == 0) {
+		goto null_subid;
+	}
+	if (strlen(token) > 50) {
+		fprintf(shadow_logfd, "Subid NSS module name too long (longer than 50 characters): %s\n", token);
+		fprintf(shadow_logfd, "Using files\n");
+		goto null_subid;
+	}
+	SNPRINTF(libname, "libsubid_%s.so", token);
+	h = dlopen(libname, RTLD_LAZY);
+	if (!h) {
+		fprintf(shadow_logfd, "Error opening %s: %s\n", libname, dlerror());
+		fprintf(shadow_logfd, "Using files\n");
+		goto null_subid;
+	}
+	subid_nss = MALLOC(1, struct subid_nss_ops);
+	if (!subid_nss) {
+		goto close_lib;
+	}
+	subid_nss->has_range = dlsym(h, "shadow_subid_has_range");
+	if (!subid_nss->has_range) {
+		fprintf(shadow_logfd, "%s did not provide @has_range@\n", libname);
+		goto close_lib;
+	}
+	subid_nss->list_owner_ranges = dlsym(h, "shadow_subid_list_owner_ranges");
+	if (!subid_nss->list_owner_ranges) {
+		fprintf(shadow_logfd, "%s did not provide @list_owner_ranges@\n", libname);
+		goto close_lib;
+	}
+	subid_nss->find_subid_owners = dlsym(h, "shadow_subid_find_subid_owners");
+	if (!subid_nss->find_subid_owners) {
+		fprintf(shadow_logfd, "%s did not provide @find_subid_owners@\n", libname);
+		goto close_lib;
+	}
+	subid_nss->handle = h;
+	goto done;
+
+close_lib:
+	dlclose(h);
+	free(subid_nss);
+null_subid:
+	subid_nss = NULL;
 
 done:
 	atomic_store(&nss_init_completed, true);
diff --git a/libmisc/obscure.c b/lib/obscure.c
index 3daaa95..549c2a8 100644
--- a/libmisc/obscure.c
+++ b/lib/obscure.c
@@ -9,25 +9,27 @@
 
 #include <config.h>
 
-#ifndef USE_PAM
-
 #ident "$Id$"
 
 
-/*
- * This version of obscure.c contains modifications to support "cracklib"
- * by Alec Muffet (alec.muffett@uk.sun.com).  You must obtain the Cracklib
- * library source code for this function to operate.
- */
 #include <ctype.h>
 #include <stdio.h>
+
+#include "alloc.h"
+#include "attr.h"
+#include "memzero.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "getdef.h"
+
+#if WITH_LIBBSD == 0
+#include "freezero.h"
+#endif /* WITH_LIBBSD */
+
 /*
  * can't be a palindrome - like `R A D A R' or `M A D A M'
  */
-static bool palindrome (unused const char *old, const char *new)
+static bool palindrome (MAYBE_UNUSED const char *old, const char *new)
 {
 	size_t i, j;
 
@@ -73,57 +75,6 @@ static bool similar (/*@notnull@*/const char *old, /*@notnull@*/const char *new)
 	return true;
 }
 
-/*
- * a nice mix of characters.
- */
-
-static bool simple (unused const char *old, const char *new)
-{
-	bool digits = false;
-	bool uppers = false;
-	bool lowers = false;
-	bool others = false;
-	int size;
-	int i;
-
-	for (i = 0; '\0' != new[i]; i++) {
-		if (isdigit (new[i])) {
-			digits = true;
-		} else if (isupper (new[i])) {
-			uppers = true;
-		} else if (islower (new[i])) {
-			lowers = true;
-		} else {
-			others = true;
-		}
-	}
-
-	/*
-	 * The scam is this - a password of only one character type
-	 * must be 8 letters long.  Two types, 7, and so on.
-	 */
-
-	size = 9;
-	if (digits) {
-		size--;
-	}
-	if (uppers) {
-		size--;
-	}
-	if (lowers) {
-		size--;
-	}
-	if (others) {
-		size--;
-	}
-
-	if (size <= i) {
-		return false;
-	}
-
-	return true;
-}
-
 static char *str_lower (/*@returned@*/char *string)
 {
 	char *cp;
@@ -137,28 +88,18 @@ static char *str_lower (/*@returned@*/char *string)
 static /*@observer@*//*@null@*/const char *password_check (
 	/*@notnull@*/const char *old,
 	/*@notnull@*/const char *new,
-	/*@notnull@*/const struct passwd *pwdp)
+	/*@notnull@*/MAYBE_UNUSED const struct passwd *pwdp)
 {
 	const char *msg = NULL;
 	char *oldmono, *newmono, *wrapped;
 
-#ifdef HAVE_LIBCRACK
-	char *dictpath;
-
-#ifdef HAVE_LIBCRACK_PW
-	char *FascistCheckPw ();
-#else
-	char *FascistCheck ();
-#endif
-#endif
-
 	if (strcmp (new, old) == 0) {
 		return _("no change");
 	}
 
 	newmono = str_lower (xstrdup (new));
 	oldmono = str_lower (xstrdup (old));
-	wrapped = xmalloc (strlen (oldmono) * 2 + 1);
+	wrapped = XMALLOC(strlen(oldmono) * 2 + 1, char);
 	strcpy (wrapped, oldmono);
 	strcat (wrapped, oldmono);
 
@@ -168,25 +109,8 @@ static /*@observer@*//*@null@*/const char *password_check (
 		msg = _("case changes only");
 	} else if (similar (oldmono, newmono)) {
 		msg = _("too similar");
-	} else if (simple (old, new)) {
-		msg = _("too simple");
 	} else if (strstr (wrapped, newmono) != NULL) {
 		msg = _("rotated");
-	} else {
-#ifdef HAVE_LIBCRACK
-		/*
-		 * Invoke Alec Muffett's cracklib routines.
-		 */
-
-		dictpath = getdef_str ("CRACKLIB_DICTPATH");
-		if (NULL != dictpath) {
-#ifdef HAVE_LIBCRACK_PW
-			msg = FascistCheckPw (new, dictpath, pwdp);
-#else
-			msg = FascistCheck (new, dictpath);
-#endif
-		}
-#endif
 	}
 	strzero (newmono);
 	strzero (oldmono);
@@ -257,7 +181,7 @@ static /*@observer@*//*@null@*/const char *obscure_msg (
 		}
 
 	}
-	maxlen = (size_t) getdef_num ("PASS_MAX_LEN", 8);
+	maxlen = getdef_num ("PASS_MAX_LEN", 8);
 	if (   (oldlen <= maxlen)
 	    && (newlen <= maxlen)) {
 		return NULL;
@@ -274,10 +198,8 @@ static /*@observer@*//*@null@*/const char *obscure_msg (
 
 	msg = password_check (old1, new1, pwdp);
 
-	memzero (new1, newlen);
-	memzero (old1, oldlen);
-	free (new1);
-	free (old1);
+	freezero (new1, newlen);
+	freezero (old1, oldlen);
 
 	return msg;
 }
@@ -300,7 +222,3 @@ bool obscure (const char *old, const char *new, const struct passwd *pwdp)
 	}
 	return true;
 }
-
-#else				/* !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
-#endif				/* !USE_PAM */
diff --git a/lib/pam_defs.h b/lib/pam_defs.h
index 2dcda3c..dd016e5 100644
--- a/lib/pam_defs.h
+++ b/lib/pam_defs.h
@@ -15,7 +15,7 @@
 #endif
 
 
-static struct pam_conv conv = {
+static const struct pam_conv conv = {
 	SHADOW_PAM_CONVERSATION,
 	NULL
 };
diff --git a/libmisc/pam_pass.c b/lib/pam_pass.c
index 166a42e..ff49173 100644
--- a/libmisc/pam_pass.c
+++ b/lib/pam_pass.c
@@ -55,5 +55,5 @@ void do_pam_passwd (const char *user, bool silent, bool change_expired)
 	(void) pam_end (pamh, PAM_SUCCESS);
 }
 #else				/* !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !USE_PAM */
diff --git a/libmisc/pam_pass_non_interactive.c b/lib/pam_pass_non_interactive.c
index 34cdc1f..3d10908 100644
--- a/libmisc/pam_pass_non_interactive.c
+++ b/lib/pam_pass_non_interactive.c
@@ -13,7 +13,13 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <strings.h>
+
 #include <security/pam_appl.h>
+
+#include "alloc.h"
+#include "attr.h"
+#include "memzero.h"
 #include "prototypes.h"
 #include "shadowlog.h"
 
@@ -21,7 +27,7 @@
 static int ni_conv (int num_msg,
                     const struct pam_message **msg,
                     struct pam_response **resp,
-                    unused void *appdata_ptr);
+                    MAYBE_UNUSED void *appdata_ptr);
 static const struct pam_conv non_interactive_pam_conv = {
 	ni_conv,
 	NULL
@@ -32,7 +38,7 @@ static const struct pam_conv non_interactive_pam_conv = {
 static int ni_conv (int num_msg,
                     const struct pam_message **msg,
                     struct pam_response **resp,
-                    unused void *appdata_ptr)
+                    MAYBE_UNUSED void *appdata_ptr)
 {
 	struct pam_response *responses;
 	int count;
@@ -43,8 +49,7 @@ static int ni_conv (int num_msg,
 		return PAM_CONV_ERR;
 	}
 
-	responses = (struct pam_response *) calloc ((size_t) num_msg,
-	                                            sizeof (*responses));
+	responses = CALLOC (num_msg, struct pam_response);
 	if (NULL == responses) {
 		return PAM_CONV_ERR;
 	}
@@ -93,9 +98,8 @@ static int ni_conv (int num_msg,
 failed_conversation:
 	for (count=0; count < num_msg; count++) {
 		if (NULL != responses[count].resp) {
-			memset (responses[count].resp, 0,
-			        strlen (responses[count].resp));
-			free (responses[count].resp);
+			strzero(responses[count].resp);
+			free(responses[count].resp);
 			responses[count].resp = NULL;
 		}
 	}
@@ -141,5 +145,5 @@ int do_pam_passwd_non_interactive (const char *pam_service,
 	return ((PAM_SUCCESS == ret) ? 0 : 1);
 }
 #else				/* !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !USE_PAM */
diff --git a/lib/port.c b/lib/port.c
index 0bea2ef..60ff898 100644
--- a/lib/port.c
+++ b/lib/port.c
@@ -79,7 +79,7 @@ static void endportent (void)
 		(void) fclose (ports);
 	}
 
-	ports = (FILE *) 0;
+	ports = NULL;
 }
 
 /*
@@ -127,14 +127,14 @@ static struct port *getportent (void)
 	 *      - parse off a list of days and times
 	 */
 
-      again:
+again:
 
 	/*
-	 * Get the next line and remove the last character, which
-	 * is a '\n'.  Lines which begin with '#' are all ignored.
+	 * Get the next line and remove optional trailing '\n'.
+	 * Lines which begin with '#' are all ignored.
 	 */
 
-	if (fgets (buf, (int) sizeof buf, ports) == 0) {
+	if (fgets (buf, sizeof buf, ports) == 0) {
 		errno = saveerr;
 		return 0;
 	}
@@ -149,18 +149,14 @@ static struct port *getportent (void)
 	 * TTY devices.
 	 */
 
-	buf[strlen (buf) - 1] = 0;
+	buf[strcspn (buf, "\n")] = 0;
 
 	port.pt_names = ttys;
 	for (cp = buf, j = 0; j < PORT_TTY; j++) {
 		port.pt_names[j] = cp;
-		while (('\0' != *cp) && (':' != *cp) && (',' != *cp)) {
-			cp++;
-		}
-
-		if ('\0' == *cp) {
+		cp = strpbrk(cp, ":,");
+		if (cp == NULL)
 			goto again;	/* line format error */
-		}
 
 		if (':' == *cp) {	/* end of tty name list */
 			break;
@@ -172,13 +168,13 @@ static struct port *getportent (void)
 	}
 	*cp = '\0';
 	cp++;
-	port.pt_names[j + 1] = (char *) 0;
+	port.pt_names[j] = NULL;
 
 	/*
 	 * Get the list of user names.  It is the second colon
 	 * separated field, and is a comma separated list of user
 	 * names.  The entry '*' is used to specify all usernames.
-	 * The last entry in the list is a (char *) 0 pointer.
+	 * The last entry in the list is a NULL pointer.
 	 */
 
 	if (':' != *cp) {
@@ -243,9 +239,7 @@ static struct port *getportent (void)
 		 * week or the other two values.
 		 */
 
-		for (i = 0;
-		     ('\0' != cp[i]) && ('\0' != cp[i + 1]) && isalpha (cp[i]);
-		     i += 2) {
+		for (i = 0; isalpha(cp[i]) && ('\0' != cp[i + 1]); i += 2) {
 			switch ((cp[i] << 8) | (cp[i + 1])) {
 			case ('S' << 8) | 'u':
 				port.pt_times[j].t_days |= 01;
@@ -294,7 +288,7 @@ static struct port *getportent (void)
 		 * representing the times of day.
 		 */
 
-		for (dtime = 0; ('\0' != cp[i]) && isdigit (cp[i]); i++) {
+		for (dtime = 0; isdigit (cp[i]); i++) {
 			dtime = dtime * 10 + cp[i] - '0';
 		}
 
@@ -304,9 +298,7 @@ static struct port *getportent (void)
 		port.pt_times[j].t_start = dtime;
 		cp = cp + i + 1;
 
-		for (dtime = 0, i = 0;
-		     ('\0' != cp[i]) && isdigit (cp[i]);
-		     i++) {
+		for (dtime = 0, i = 0; isdigit (cp[i]); i++) {
 			dtime = dtime * 10 + cp[i] - '0';
 		}
 
diff --git a/libmisc/prefix_flag.c b/lib/prefix_flag.c
index 4eb5154..bba7102 100644
--- a/libmisc/prefix_flag.c
+++ b/lib/prefix_flag.c
@@ -11,7 +11,9 @@
 
 #include <stdio.h>
 #include <assert.h>
+
 #include "defines.h"
+#include "alloc.h"
 #include "prototypes.h"
 /*@-exitarg@*/
 #include "exitcodes.h"
@@ -26,6 +28,8 @@
 #endif				/* ENABLE_SUBIDS */
 #include "getdef.h"
 #include "shadowlog.h"
+#include "string/sprintf.h"
+
 
 static char *passwd_db_file = NULL;
 static char *spw_db_file = NULL;
@@ -83,6 +87,15 @@ extern const char* process_prefix_flag (const char* short_opt, int argc, char **
 
 
 	if (prefix != NULL) {
+		/* Drop privileges */
+		if (   (setregid (getgid (), getgid ()) != 0)
+		    || (setreuid (getuid (), getuid ()) != 0)) {
+			fprintf (log_get_logfd(),
+			         _("%s: failed to drop privileges (%s)\n"),
+			         log_get_progname(), strerror (errno));
+			exit (EXIT_FAILURE);
+		}
+
 		if ( prefix[0] == '\0' || !strcmp(prefix, "/"))
 			return ""; /* if prefix is "/" then we ignore the flag option */
 		/* should we prevent symbolic link from being used as a prefix? */
@@ -93,50 +106,33 @@ extern const char* process_prefix_flag (const char* short_opt, int argc, char **
 				 log_get_progname());
 			exit (E_BAD_ARG);
 		}
-		size_t len;
-		len = strlen(prefix) + strlen(PASSWD_FILE) + 2;
-		passwd_db_file = xmalloc(len);
-		snprintf(passwd_db_file, len, "%s/%s", prefix, PASSWD_FILE);
+
+		xasprintf(&passwd_db_file, "%s/%s", prefix, PASSWD_FILE);
 		pw_setdbname(passwd_db_file);
 
-		len = strlen(prefix) + strlen(GROUP_FILE) + 2;
-		group_db_file = xmalloc(len);
-		snprintf(group_db_file, len, "%s/%s", prefix, GROUP_FILE);
+		xasprintf(&group_db_file, "%s/%s", prefix, GROUP_FILE);
 		gr_setdbname(group_db_file);
 
 #ifdef  SHADOWGRP
-		len = strlen(prefix) + strlen(SGROUP_FILE) + 2;
-		sgroup_db_file = xmalloc(len);
-		snprintf(sgroup_db_file, len, "%s/%s", prefix, SGROUP_FILE);
+		xasprintf(&sgroup_db_file, "%s/%s", prefix, SGROUP_FILE);
 		sgr_setdbname(sgroup_db_file);
 #endif
-#ifdef	USE_NIS
-		__setspNIS(0); /* disable NIS for now, at least until it is properly supporting a "prefix" */
-#endif
 
-		len = strlen(prefix) + strlen(SHADOW_FILE) + 2;
-		spw_db_file = xmalloc(len);
-		snprintf(spw_db_file, len, "%s/%s", prefix, SHADOW_FILE);
+		xasprintf(&spw_db_file, "%s/%s", prefix, SHADOW_FILE);
 		spw_setdbname(spw_db_file);
 
 #ifdef ENABLE_SUBIDS
-		len = strlen(prefix) + strlen("/etc/subuid") + 2;
-		suid_db_file = xmalloc(len);
-		snprintf(suid_db_file, len, "%s/%s", prefix, "/etc/subuid");
+		xasprintf(&suid_db_file, "%s/%s", prefix, SUBUID_FILE);
 		sub_uid_setdbname(suid_db_file);
 
-		len = strlen(prefix) + strlen("/etc/subgid") + 2;
-		sgid_db_file = xmalloc(len);
-		snprintf(sgid_db_file, len, "%s/%s", prefix, "/etc/subgid");
+		xasprintf(&sgid_db_file, "%s/%s", prefix, SUBGID_FILE);
 		sub_gid_setdbname(sgid_db_file);
 #endif
 
 #ifdef USE_ECONF
 		setdef_config_file(prefix);
 #else
-		len = strlen(prefix) + strlen("/etc/login.defs") + 2;
-		def_conf_file = xmalloc(len);
-		snprintf(def_conf_file, len, "%s/%s", prefix, "/etc/login.defs");
+		xasprintf(&def_conf_file, "%s/%s", prefix, "/etc/login.defs");
 		setdef_config_file(def_conf_file);
 #endif
 	}
@@ -227,6 +223,29 @@ extern struct passwd *prefix_getpwnam(const char* name)
 		return getpwnam(name);
 	}
 }
+#if HAVE_FGETPWENT_R
+extern int prefix_getpwnam_r(const char* name, struct passwd* pwd,
+                             char* buf, size_t buflen, struct passwd** result)
+{
+	if (passwd_db_file) {
+		FILE* fg;
+		int ret = 0;
+
+		fg = fopen(passwd_db_file, "rt");
+		if (!fg)
+			return errno;
+		while ((ret = fgetpwent_r(fg, pwd, buf, buflen, result)) == 0) {
+			if (!strcmp(name, pwd->pw_name))
+				break;
+		}
+		fclose(fg);
+		return ret;
+	}
+	else {
+		return getpwnam_r(name, pwd, buf, buflen, result);
+	}
+}
+#endif
 extern struct spwd *prefix_getspnam(const char* name)
 {
 	if (spw_db_file) {
@@ -315,26 +334,27 @@ extern void prefix_endgrent(void)
 
 extern struct group *prefix_getgr_nam_gid(const char *grname)
 {
-	long long int gid;
-	char *endptr;
-	struct group *g;
+	char          *end;
+	long long     gid;
+	struct group  *g;
 
 	if (NULL == grname) {
 		return NULL;
 	}
 
-	if (group_db_file) {
-		errno = 0;
-		gid = strtoll (grname, &endptr, 10);
-		if (   ('\0' != *grname)
-	    	&& ('\0' == *endptr)
-	    	&& (ERANGE != errno)
-	    	&& (gid == (gid_t)gid)) {
-			return prefix_getgrgid ((gid_t) gid);
-		}
-		g = prefix_getgrnam (grname);
-		return g ? __gr_dup(g) : NULL;
-	}
-	else
+	if (!group_db_file)
 		return getgr_nam_gid(grname);
+
+	errno = 0;
+	gid = strtoll(grname, &end, 10);
+	if (   ('\0' != *grname)
+	    && ('\0' == *end)
+	    && (0 == errno)
+	    && (gid == (gid_t)gid))
+	{
+		return prefix_getgrgid(gid);
+	}
+
+	g = prefix_getgrnam(grname);
+	return g ? __gr_dup(g) : NULL;
 }
diff --git a/lib/prototypes.h b/lib/prototypes.h
index 1172b5d..5c56e77 100644
--- a/lib/prototypes.h
+++ b/lib/prototypes.h
@@ -10,7 +10,7 @@
 /*
  * prototypes.h
  *
- * prototypes of libmisc functions, and private lib functions.
+ * prototypes of some lib functions, and private lib functions.
  *
  * $Id$
  *
@@ -21,18 +21,17 @@
 
 #include <config.h>
 
+#include <sys/socket.h>
 #include <sys/stat.h>
-#ifdef USE_UTMPX
-#include <utmpx.h>
-#else
-#include <utmp.h>
-#endif
 #include <sys/types.h>
 #include <pwd.h>
 #include <grp.h>
 #include <shadow.h>
+#ifdef ENABLE_LASTLOG
 #include <lastlog.h>
+#endif /* ENABLE_LASTLOG */
 
+#include "attr.h"
 #include "defines.h"
 #include "commonio.h"
 
@@ -44,6 +43,7 @@ extern int add_groups (const char *);
 /* age.c */
 extern void agecheck (/*@null@*/const struct spwd *);
 extern int expire (const struct passwd *, /*@null@*/const struct spwd *);
+
 /* isexpired.c */
 extern int isexpired (const struct passwd *, /*@null@*/const struct spwd *);
 
@@ -92,11 +92,11 @@ void cleanup_report_del_group_gshadow (void *group_name);
 void cleanup_report_mod_passwd (void *cleanup_info);
 void cleanup_report_mod_group (void *cleanup_info);
 void cleanup_report_mod_gshadow (void *cleanup_info);
-void cleanup_unlock_group (/*@null@*/void *unused);
+void cleanup_unlock_group (/*@null@*/void *MAYBE_UNUSED);
 #ifdef SHADOWGRP
-void cleanup_unlock_gshadow (/*@null@*/void *unused);
+void cleanup_unlock_gshadow (/*@null@*/void *MAYBE_UNUSED);
 #endif
-void cleanup_unlock_passwd (/*@null@*/void *unused);
+void cleanup_unlock_passwd (/*@null@*/void *MAYBE_UNUSED);
 
 /* console.c */
 extern bool console (const char *);
@@ -108,21 +108,18 @@ extern int copy_tree (const char *src_root, const char *dst_root,
                       uid_t old_uid, uid_t new_uid,
                       gid_t old_gid, gid_t new_gid);
 
-/* date_to_str.c */
-extern void date_to_str (size_t size, char buf[size], long date);
-
 /* encrypt.c */
 extern /*@exposed@*//*@null@*/char *pw_encrypt (const char *, const char *);
 
-/* entry.c */
-extern void pw_entry (const char *, struct passwd *);
-
 /* env.c */
 extern void addenv (const char *, /*@null@*/const char *);
 extern void initenv (void);
 extern void set_env (int, char *const *);
 extern void sanitize_env (void);
 
+/* fd.c */
+extern void check_fds (void);
+
 /* fields.c */
 extern void change_field (char *, size_t, const char *);
 extern int valid_field (const char *, const char *);
@@ -152,11 +149,10 @@ extern int get_gid (const char *gidstr, gid_t *gid);
 /* getgr_nam_gid.c */
 extern /*@only@*//*@null@*/struct group *getgr_nam_gid (/*@null@*/const char *grname);
 
-/* getlong.c */
-extern int getlong (const char *numstr, /*@out@*/long int *result);
-
 /* get_pid.c */
 extern int get_pid (const char *pidstr, pid_t *pid);
+extern int get_pidfd_from_fd(const char *pidfdstr);
+extern int open_pidfd(const char *pidstr);
 
 /* getrange */
 extern int getrange (const char *range,
@@ -169,11 +165,9 @@ extern time_t gettime (void);
 /* get_uid.c */
 extern int get_uid (const char *uidstr, uid_t *uid);
 
-/* getulong.c */
-extern int getulong (const char *numstr, /*@out@*/unsigned long int *result);
-
 /* fputsx.c */
-extern /*@null@*/char *fgetsx (/*@returned@*/ /*@out@*/char *, int, FILE *);
+ATTR_ACCESS(write_only, 1, 2)
+extern /*@null@*/char *fgetsx(/*@returned@*/char *restrict, int, FILE *restrict);
 extern int fputsx (const char *, FILE *);
 
 /* groupio.c */
@@ -185,8 +179,7 @@ extern void __gr_set_changed (void);
 /* groupmem.c */
 extern /*@null@*/ /*@only@*/struct group *__gr_dup (const struct group *grent);
 extern void gr_free_members (struct group *grent);
-extern void gr_free (/*@out@*/ /*@only@*/struct group *grent);
-extern bool gr_append_member (struct group *grp, char *member);
+extern void gr_free(/*@only@*/struct group *grent);
 
 /* hushed.c */
 extern bool hushed (const char *username);
@@ -212,24 +205,26 @@ extern void setup_limits (const struct passwd *);
 #endif
 
 /* list.c */
-extern /*@only@*/ /*@out@*/char **add_list (/*@returned@*/ /*@only@*/char **, const char *);
-extern /*@only@*/ /*@out@*/char **del_list (/*@returned@*/ /*@only@*/char **, const char *);
-extern /*@only@*/ /*@out@*/char **dup_list (char *const *);
+extern /*@only@*/char **add_list (/*@returned@*/ /*@only@*/char **, const char *);
+extern /*@only@*/char **del_list (/*@returned@*/ /*@only@*/char **, const char *);
+extern /*@only@*/char **dup_list (char *const *);
 extern bool is_on_list (char *const *list, const char *member);
 extern /*@only@*/char **comma_to_list (const char *);
 
+#ifdef ENABLE_LASTLOG
 /* log.c */
 extern void dolastlog (
 	struct lastlog *ll,
 	const struct passwd *pw,
 	/*@unique@*/const char *line,
 	/*@unique@*/const char *host);
+#endif /* ENABLE_LASTLOG */
 
 /* login_nopam.c */
 extern int login_access (const char *user, const char *from);
 
 /* loginprompt.c */
-extern void login_prompt (const char *, char *, int);
+extern void login_prompt (char *, int);
 
 /* mail.c */
 extern void mailcheck (void);
@@ -304,9 +299,7 @@ extern int do_pam_passwd_non_interactive (const char *pam_service,
 #endif				/* USE_PAM */
 
 /* obscure.c */
-#ifndef USE_PAM
 extern bool obscure (const char *, const char *, const struct passwd *);
-#endif
 
 /* pam_pass.c */
 #ifdef USE_PAM
@@ -322,6 +315,10 @@ extern struct group *prefix_getgrnam(const char *name);
 extern struct group *prefix_getgrgid(gid_t gid);
 extern struct passwd *prefix_getpwuid(uid_t uid);
 extern struct passwd *prefix_getpwnam(const char* name);
+#if HAVE_FGETPWENT_R
+extern int prefix_getpwnam_r(const char* name, struct passwd* pwd,
+                             char* buf, size_t buflen, struct passwd** result);
+#endif
 extern struct spwd *prefix_getspnam(const char* name);
 extern struct group *prefix_getgr_nam_gid(const char *grname);
 extern void prefix_setpwent(void);
@@ -332,9 +329,7 @@ extern struct group* prefix_getgrent(void);
 extern void prefix_endgrent(void);
 
 /* pwd2spwd.c */
-#ifndef USE_PAM
 extern struct spwd *pwd_to_spwd (const struct passwd *);
-#endif
 
 /* pwdcheck.c */
 #ifndef USE_PAM
@@ -351,14 +346,19 @@ extern /*@dependent@*/ /*@null@*/struct commonio_entry *__pw_get_head (void);
 
 /* pwmem.c */
 extern /*@null@*/ /*@only@*/struct passwd *__pw_dup (const struct passwd *pwent);
-extern void pw_free (/*@out@*/ /*@only@*/struct passwd *pwent);
+extern void pw_free(/*@only@*/struct passwd *pwent);
+
+/* csrand.c */
+unsigned long csrand (void);
+unsigned long csrand_uniform (unsigned long n);
+unsigned long csrand_interval (unsigned long min, unsigned long max);
 
 /* remove_tree.c */
 extern int remove_tree (const char *root, bool remove_root);
 
 /* rlogin.c */
-extern int do_rlogin (const char *remote_host, char *name, size_t namelen,
-                      char *term, size_t termlen);
+extern int do_rlogin(const char *remote_host, char *name, size_t namesize,
+                     char *term, size_t termsize);
 
 /* root_flag.c */
 extern void process_root_flag (const char* short_opt, int argc, char **argv);
@@ -376,7 +376,7 @@ extern int check_selinux_permit (const char *perm_name);
 
 /* semanage.c */
 #ifdef WITH_SELINUX
-extern int set_seuser(const char *login_name, const char *seuser_name);
+extern int set_seuser(const char *login_name, const char *seuser_name, const char *serange);
 extern int del_seuser(const char *login_name);
 #endif
 
@@ -409,7 +409,7 @@ extern struct spwd *sgetspent (const char *string);
 /* sgroupio.c */
 extern void __sgr_del_entry (const struct commonio_entry *ent);
 extern /*@null@*/ /*@only@*/struct sgrp *__sgr_dup (const struct sgrp *sgent);
-extern void sgr_free (/*@out@*/ /*@only@*/struct sgrp *sgent);
+extern void sgr_free(/*@only@*/struct sgrp *sgent);
 extern /*@dependent@*/ /*@null@*/struct commonio_entry *__sgr_get_head (void);
 extern void __sgr_set_changed (void);
 
@@ -419,14 +419,15 @@ extern void __spw_del_entry (const struct commonio_entry *ent);
 
 /* shadowmem.c */
 extern /*@null@*/ /*@only@*/struct spwd *__spw_dup (const struct spwd *spent);
-extern void spw_free (/*@out@*/ /*@only@*/struct spwd *spent);
+extern void spw_free(/*@only@*/struct spwd *spent);
 
 /* shell.c */
 extern int shell (const char *file, /*@null@*/const char *arg, char *const envp[]);
 
 /* spawn.c */
-extern int run_command (const char *cmd, const char *argv[],
-                        /*@null@*/const char *envp[], /*@out@*/int *status);
+ATTR_ACCESS(write_only, 4)
+extern int run_command(const char *cmd, const char *argv[],
+                       /*@null@*/const char *envp[], int *restrict status);
 
 /* strtoday.c */
 extern long strtoday (const char *);
@@ -459,33 +460,68 @@ extern int set_filesize_limit (int blocks);
 /* user_busy.c */
 extern int user_busy (const char *name, uid_t uid);
 
-/* utmp.c */
-#ifndef USE_UTMPX
-extern /*@null@*/struct utmp *get_current_utmp (void);
-extern struct utmp *prepare_utmp (const char *name,
-                                  const char *line,
-                                  const char *host,
-                                  /*@null@*/const struct utmp *ut);
-extern int setutmp (struct utmp *ut);
-#else
-extern /*@null@*/struct utmpx *get_current_utmp (void);
-extern struct utmpx *prepare_utmpx (const char *name,
-                                    const char *line,
-                                    const char *host,
-                                    /*@null@*/const struct utmpx *ut);
-extern int setutmpx (struct utmpx *utx);
-#endif				/* USE_UTMPX */
+/*
+ * Session management: utmp.c or logind.c
+ */
+
+/**
+ * @brief Get host for the current session
+ *
+ * @param[out] out Host name
+ *
+ * @return 0 or a positive integer if the host was obtained properly,
+ *         another value on error.
+ */
+extern int get_session_host (char **out);
+#ifndef ENABLE_LOGIND
+/**
+ * @brief Update or create an utmp entry in utmp, wtmp, utmpw, or wtmpx
+ *
+ * @param[in] user username
+ * @param[in] tty tty
+ * @param[in] host hostname
+ *
+ * @return 0 if utmp was updated properly,
+ *         1 on error.
+ */
+extern int update_utmp (const char *user,
+                        const char *tty,
+                        const char *host);
+/**
+ * @brief Update the cumulative failure log
+ *
+ * @param[in] failent_user username
+ * @param[in] tty tty
+ * @param[in] host hostname
+ *
+ */
+extern void record_failure(const char *failent_user,
+                           const char *tty,
+                           const char *hostname);
+#endif /* ENABLE_LOGIND */
+
+/**
+ * @brief Number of active user sessions
+ *
+ * @param[in] name username
+ * @param[in] limit maximum number of active sessions
+ *
+ * @return number of active sessions.
+ *
+ */
+extern unsigned long active_sessions_count(const char *name,
+                                           unsigned long limit);
 
 /* valid.c */
 extern bool valid (const char *, const struct passwd *);
 
-/* xmalloc.c */
-extern /*@maynotreturn@*/ /*@only@*//*@out@*//*@notnull@*/void *xmalloc (size_t size)
-  /*@ensures MaxSet(result) == (size - 1); @*/;
-extern /*@maynotreturn@*/ /*@only@*//*@notnull@*/char *xstrdup (const char *);
+/* write_full.c */
+extern int write_full(int fd, const void *buf, size_t count);
 
 /* xgetpwnam.c */
 extern /*@null@*/ /*@only@*/struct passwd *xgetpwnam (const char *);
+/* xprefix_getpwnam.c */
+extern /*@null@*/ /*@only@*/struct passwd *xprefix_getpwnam (const char *);
 /* xgetpwuid.c */
 extern /*@null@*/ /*@only@*/struct passwd *xgetpwuid (uid_t);
 /* xgetgrnam.c */
diff --git a/lib/pwauth.c b/lib/pwauth.c
index 62de472..0cd3412 100644
--- a/lib/pwauth.c
+++ b/lib/pwauth.c
@@ -18,21 +18,26 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <unistd.h>
-#include "prototypes.h"
+
+#include "agetpass.h"
 #include "defines.h"
+#include "memzero.h"
+#include "prototypes.h"
 #include "pwauth.h"
 #include "getdef.h"
+#include "string/sprintf.h"
+
 #ifdef SKEY
 #include <skey.h>
 #endif
+
+
 #ifdef __linux__		/* standard password prompt by default */
 static const char *PROMPT = gettext_noop ("Password: ");
 #else
 static const char *PROMPT = gettext_noop ("%s's Password: ");
 #endif
 
-bool wipe_clear_pass = true;
-/*@null@*/char *clear_pass = NULL;
 
 /*
  * pw_auth - perform getpass/crypt authentication
@@ -47,16 +52,16 @@ int pw_auth (const char *cipher,
              int reason,
              /*@null@*/const char *input)
 {
-	char prompt[1024];
-	char *clear = NULL;
-	const char *cp;
-	const char *encrypted;
-	int retval;
+	int          retval;
+	char         prompt[1024];
+	char         *clear = NULL;
+	const char   *cp;
+	const char   *encrypted;
 
 #ifdef	SKEY
-	bool use_skey = false;
-	char challenge_info[40];
-	struct skey skey;
+	bool         use_skey = false;
+	char         challenge_info[40];
+	struct skey  skey;
 #endif
 
 	/*
@@ -137,15 +142,9 @@ int pw_auth (const char *cipher,
 		}
 #endif
 
-		snprintf (prompt, sizeof prompt, cp, user);
-		clear = getpass (prompt);
-		if (NULL == clear) {
-			static char c[1];
-
-			c[0] = '\0';
-			clear = c;
-		}
-		input = clear;
+		SNPRINTF(prompt, cp, user);
+		clear = agetpass(prompt);
+		input = (clear == NULL) ? "" : clear;
 	}
 
 	/*
@@ -171,14 +170,9 @@ int pw_auth (const char *cipher,
 	 * -- AR 8/22/1999
 	 */
 	if ((0 != retval) && ('\0' == input[0]) && use_skey) {
-		clear = getpass (prompt);
-		if (NULL == clear) {
-			static char c[1];
-
-			c[0] = '\0';
-			clear = c;
-		}
-		input = clear;
+		erase_pass(clear);
+		clear = agetpass(prompt);
+		input = (clear == NULL) ? "" : clear;
 	}
 
 	if ((0 != retval) && use_skey) {
@@ -192,20 +186,10 @@ int pw_auth (const char *cipher,
 		}
 	}
 #endif
+	erase_pass(clear);
 
-	/*
-	 * Things like RADIUS authentication may need the password -
-	 * if the external variable wipe_clear_pass is zero, we will
-	 * not wipe it (the caller should wipe clear_pass when it is
-	 * no longer needed).  --marekm
-	 */
-
-	clear_pass = clear;
-	if (wipe_clear_pass && (NULL != clear) && ('\0' != *clear)) {
-		strzero (clear);
-	}
 	return retval;
 }
 #else				/* !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !USE_PAM */
diff --git a/libmisc/pwd2spwd.c b/lib/pwd2spwd.c
index 139a024..eea9519 100644
--- a/libmisc/pwd2spwd.c
+++ b/lib/pwd2spwd.c
@@ -11,8 +11,6 @@
 
 #ident "$Id$"
 
-#ifndef USE_PAM
-
 #include <sys/types.h>
 #include "prototypes.h"
 #include "defines.h"
@@ -41,8 +39,8 @@ struct spwd *pwd_to_spwd (const struct passwd *pw)
 		 * Defaults used if there is no pw_age information.
 		 */
 		sp.sp_min = 0;
-		sp.sp_max = (10000L * DAY) / SCALE;
-		sp.sp_lstchg = (long) gettime () / SCALE;
+		sp.sp_max = 10000;
+		sp.sp_lstchg = gettime () / DAY;
 		if (0 == sp.sp_lstchg) {
 			/* Better disable aging than requiring a password
 			 * change */
@@ -61,7 +59,4 @@ struct spwd *pwd_to_spwd (const struct passwd *pw)
 
 	return &sp;
 }
-#else				/* USE_PAM */
-extern int errno;	/* warning: ANSI C forbids an empty source file */
-#endif				/* !USE_PAM */
 
diff --git a/libmisc/pwd_init.c b/lib/pwd_init.c
index 63c71e2..b3f94e1 100644
--- a/libmisc/pwd_init.c
+++ b/lib/pwd_init.c
@@ -15,9 +15,7 @@
 #include <signal.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#ifdef HAVE_SYS_RESOURCE_H
 #include <sys/resource.h>
-#endif
 
 #include "prototypes.h"
 
@@ -28,39 +26,22 @@
  */
 void pwd_init (void)
 {
-#ifdef HAVE_SYS_RESOURCE_H
 	struct rlimit rlim;
 
-#ifdef RLIMIT_CORE
 	rlim.rlim_cur = rlim.rlim_max = 0;
 	setrlimit (RLIMIT_CORE, &rlim);
-#endif
+
 	rlim.rlim_cur = rlim.rlim_max = RLIM_INFINITY;
-#ifdef RLIMIT_AS
 	setrlimit (RLIMIT_AS, &rlim);
-#endif
-#ifdef RLIMIT_CPU
+
 	setrlimit (RLIMIT_CPU, &rlim);
-#endif
-#ifdef RLIMIT_DATA
 	setrlimit (RLIMIT_DATA, &rlim);
-#endif
-#ifdef RLIMIT_FSIZE
 	setrlimit (RLIMIT_FSIZE, &rlim);
-#endif
-#ifdef RLIMIT_NOFILE
 	setrlimit (RLIMIT_NOFILE, &rlim);
-#endif
 #ifdef RLIMIT_RSS
 	setrlimit (RLIMIT_RSS, &rlim);
 #endif
-#ifdef RLIMIT_STACK
 	setrlimit (RLIMIT_STACK, &rlim);
-#endif
-#else				/* !HAVE_SYS_RESOURCE_H */
-	set_filesize_limit (30000);
-	/* don't know how to set the other limits... */
-#endif				/* !HAVE_SYS_RESOURCE_H */
 
 	signal (SIGALRM, SIG_IGN);
 	signal (SIGHUP, SIG_IGN);
@@ -68,12 +49,8 @@ void pwd_init (void)
 	signal (SIGPIPE, SIG_IGN);
 	signal (SIGQUIT, SIG_IGN);
 	signal (SIGTERM, SIG_IGN);
-#ifdef SIGTSTP
 	signal (SIGTSTP, SIG_IGN);
-#endif
-#ifdef SIGTTOU
 	signal (SIGTTOU, SIG_IGN);
-#endif
 
 	umask (077);
 }
diff --git a/libmisc/pwdcheck.c b/lib/pwdcheck.c
index 15fc3a3..93c9f5c 100644
--- a/libmisc/pwdcheck.c
+++ b/lib/pwdcheck.c
@@ -13,12 +13,14 @@
 
 #include <stdio.h>
 #include <shadow.h>
+
+#include "attr.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "pwauth.h"
 #include "shadowlog.h"
 
-void passwd_check (const char *user, const char *passwd, unused const char *progname)
+void passwd_check (const char *user, const char *passwd, MAYBE_UNUSED const char *progname)
 {
 	struct spwd *sp;
 
@@ -26,7 +28,7 @@ void passwd_check (const char *user, const char *passwd, unused const char *prog
 	if (NULL != sp) {
 		passwd = sp->sp_pwdp;
 	}
-	if (pw_auth (passwd, user, PW_LOGIN, (char *) 0) != 0) {
+	if (pw_auth (passwd, user, PW_LOGIN, NULL) != 0) {
 		SYSLOG ((LOG_WARN, "incorrect password for `%s'", user));
 		(void) sleep (1);
 		fprintf (log_get_logfd(), _("Incorrect password for %s.\n"), user);
@@ -34,5 +36,5 @@ void passwd_check (const char *user, const char *passwd, unused const char *prog
 	}
 }
 #else			/* USE_PAM */
-extern int errno;	/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif			/* USE_PAM */
diff --git a/lib/pwio.c b/lib/pwio.c
index e59b473..3497c75 100644
--- a/lib/pwio.c
+++ b/lib/pwio.c
@@ -26,7 +26,8 @@ static /*@null@*/ /*@only@*/void *passwd_dup (const void *ent)
 	return __pw_dup (pw);
 }
 
-static void passwd_free (/*@out@*/ /*@only@*/void *ent)
+static void
+passwd_free(/*@only@*/void *ent)
 {
 	struct passwd *pw = ent;
 
@@ -42,7 +43,7 @@ static const char *passwd_getname (const void *ent)
 
 static void *passwd_parse (const char *line)
 {
-	return (void *) sgetpwent (line);
+	return sgetpwent (line);
 }
 
 static int passwd_put (const void *ent, FILE * file)
@@ -137,7 +138,7 @@ int pw_open (int mode)
 
 int pw_update (const struct passwd *pw)
 {
-	return commonio_update (&passwd_db, (const void *) pw);
+	return commonio_update (&passwd_db, pw);
 }
 
 int pw_remove (const char *name)
@@ -182,15 +183,23 @@ struct commonio_db *__pw_get_db (void)
 
 static int pw_cmp (const void *p1, const void *p2)
 {
+	const struct commonio_entry *const *ce1;
+	const struct commonio_entry *const *ce2;
+	const struct passwd *pw1, *pw2;
 	uid_t u1, u2;
 
-	if ((*(struct commonio_entry **) p1)->eptr == NULL)
+	ce1 = p1;
+	pw1 = (*ce1)->eptr;
+	if (pw1 == NULL)
 		return 1;
-	if ((*(struct commonio_entry **) p2)->eptr == NULL)
+
+	ce2 = p2;
+	pw2 = (*ce2)->eptr;
+	if (pw2 == NULL)
 		return -1;
 
-	u1 = ((struct passwd *) (*(struct commonio_entry **) p1)->eptr)->pw_uid;
-	u2 = ((struct passwd *) (*(struct commonio_entry **) p2)->eptr)->pw_uid;
+	u1 = pw1->pw_uid;
+	u2 = pw2->pw_uid;
 
 	if (u1 < u2)
 		return -1;
diff --git a/lib/pwmem.c b/lib/pwmem.c
index 867e3f7..9c6e58d 100644
--- a/lib/pwmem.c
+++ b/lib/pwmem.c
@@ -13,7 +13,10 @@
 #ident "$Id$"
 
 #include <stdio.h>
+
+#include "alloc.h"
 #include "defines.h"
+#include "memzero.h"
 #include "prototypes.h"
 #include "pwio.h"
 
@@ -21,12 +24,11 @@
 {
 	struct passwd *pw;
 
-	pw = (struct passwd *) malloc (sizeof *pw);
+	pw = CALLOC (1, struct passwd);
 	if (NULL == pw) {
 		return NULL;
 	}
 	/* The libc might define other fields. They won't be copied. */
-	memset (pw, 0, sizeof *pw);
 	pw->pw_uid = pwent->pw_uid;
 	pw->pw_gid = pwent->pw_gid;
 	/*@-mustfreeonly@*/
@@ -68,7 +70,8 @@
 	return pw;
 }
 
-void pw_free (/*@out@*/ /*@only@*/struct passwd *pwent)
+void
+pw_free(/*@only@*/struct passwd *pwent)
 {
 	if (pwent != NULL) {
 		free (pwent->pw_name);
diff --git a/lib/readpassphrase.c b/lib/readpassphrase.c
new file mode 100644
index 0000000..5ff060c
--- /dev/null
+++ b/lib/readpassphrase.c
@@ -0,0 +1,198 @@
+/*	$OpenBSD: readpassphrase.c,v 1.26 2016/10/18 12:47:18 millert Exp $	*/
+
+/*
+ * Copyright (c) 2000-2002, 2007, 2010
+ *	Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <pwd.h>
+#include <signal.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <readpassphrase.h>
+
+#ifndef TCSASOFT
+#define TCSASOFT 0
+#endif
+
+#ifndef _NSIG
+#if defined(NSIG)
+#define _NSIG NSIG
+#else
+/* The SIGRTMAX define might be set to a function such as sysconf(). */
+#define _NSIG (SIGRTMAX + 1)
+#endif
+#endif
+
+static volatile sig_atomic_t signo[_NSIG];
+
+static void handler(int);
+
+char *
+readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
+{
+	ssize_t nr;
+	int input, output, save_errno, i, need_restart;
+	char ch, *p, *end;
+	struct termios term, oterm;
+	struct sigaction sa, savealrm, saveint, savehup, savequit, saveterm;
+	struct sigaction savetstp, savettin, savettou, savepipe;
+
+	/* I suppose we could alloc on demand in this case (XXX). */
+	if (bufsiz == 0) {
+		errno = EINVAL;
+		return(NULL);
+	}
+
+restart:
+	for (i = 0; i < _NSIG; i++)
+		signo[i] = 0;
+	nr = -1;
+	save_errno = 0;
+	need_restart = 0;
+	/*
+	 * Read and write to /dev/tty if available.  If not, read from
+	 * stdin and write to stderr unless a tty is required.
+	 */
+	if ((flags & RPP_STDIN) ||
+	    (input = output = open(_PATH_TTY, O_RDWR)) == -1) {
+		if (flags & RPP_REQUIRE_TTY) {
+			errno = ENOTTY;
+			return(NULL);
+		}
+		input = STDIN_FILENO;
+		output = STDERR_FILENO;
+	}
+
+	/*
+	 * Turn off echo if possible.
+	 * If we are using a tty but are not the foreground pgrp this will
+	 * generate SIGTTOU, so do it *before* installing the signal handlers.
+	 */
+	if (input != STDIN_FILENO && tcgetattr(input, &oterm) == 0) {
+		memcpy(&term, &oterm, sizeof(term));
+		if (!(flags & RPP_ECHO_ON))
+			term.c_lflag &= ~(ECHO | ECHONL);
+#ifdef VSTATUS
+		if (term.c_cc[VSTATUS] != _POSIX_VDISABLE)
+			term.c_cc[VSTATUS] = _POSIX_VDISABLE;
+#endif
+		(void)tcsetattr(input, TCSAFLUSH|TCSASOFT, &term);
+	} else {
+		memset(&term, 0, sizeof(term));
+		term.c_lflag |= ECHO;
+		memset(&oterm, 0, sizeof(oterm));
+		oterm.c_lflag |= ECHO;
+	}
+
+	/*
+	 * Catch signals that would otherwise cause the user to end
+	 * up with echo turned off in the shell.  Don't worry about
+	 * things like SIGXCPU and SIGVTALRM for now.
+	 */
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;		/* don't restart system calls */
+	sa.sa_handler = handler;
+	(void)sigaction(SIGALRM, &sa, &savealrm);
+	(void)sigaction(SIGHUP, &sa, &savehup);
+	(void)sigaction(SIGINT, &sa, &saveint);
+	(void)sigaction(SIGPIPE, &sa, &savepipe);
+	(void)sigaction(SIGQUIT, &sa, &savequit);
+	(void)sigaction(SIGTERM, &sa, &saveterm);
+	(void)sigaction(SIGTSTP, &sa, &savetstp);
+	(void)sigaction(SIGTTIN, &sa, &savettin);
+	(void)sigaction(SIGTTOU, &sa, &savettou);
+
+	if (!(flags & RPP_STDIN))
+		(void)write(output, prompt, strlen(prompt));
+	end = buf + bufsiz - 1;
+	p = buf;
+	while ((nr = read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r') {
+		if (p < end) {
+			if ((flags & RPP_SEVENBIT))
+				ch &= 0x7f;
+			if (isalpha((unsigned char)ch)) {
+				if ((flags & RPP_FORCELOWER))
+					ch = (char)tolower((unsigned char)ch);
+				if ((flags & RPP_FORCEUPPER))
+					ch = (char)toupper((unsigned char)ch);
+			}
+			*p++ = ch;
+		}
+	}
+	*p = '\0';
+	save_errno = errno;
+	if (!(term.c_lflag & ECHO))
+		(void)write(output, "\n", 1);
+
+	/* Restore old terminal settings and signals. */
+	if (memcmp(&term, &oterm, sizeof(term)) != 0) {
+		const int sigttou = signo[SIGTTOU];
+
+		/* Ignore SIGTTOU generated when we are not the fg pgrp. */
+		while (tcsetattr(input, TCSAFLUSH|TCSASOFT, &oterm) == -1 &&
+		    errno == EINTR && !signo[SIGTTOU])
+			continue;
+		signo[SIGTTOU] = sigttou;
+	}
+	(void)sigaction(SIGALRM, &savealrm, NULL);
+	(void)sigaction(SIGHUP, &savehup, NULL);
+	(void)sigaction(SIGINT, &saveint, NULL);
+	(void)sigaction(SIGQUIT, &savequit, NULL);
+	(void)sigaction(SIGPIPE, &savepipe, NULL);
+	(void)sigaction(SIGTERM, &saveterm, NULL);
+	(void)sigaction(SIGTSTP, &savetstp, NULL);
+	(void)sigaction(SIGTTIN, &savettin, NULL);
+	(void)sigaction(SIGTTOU, &savettou, NULL);
+	if (input != STDIN_FILENO)
+		(void)close(input);
+
+	/*
+	 * If we were interrupted by a signal, resend it to ourselves
+	 * now that we have restored the signal handlers.
+	 */
+	for (i = 0; i < _NSIG; i++) {
+		if (signo[i]) {
+			kill(getpid(), i);
+			switch (i) {
+			case SIGTSTP:
+			case SIGTTIN:
+			case SIGTTOU:
+				need_restart = 1;
+			}
+		}
+	}
+	if (need_restart)
+		goto restart;
+
+	if (save_errno)
+		errno = save_errno;
+	return(nr == -1 ? NULL : buf);
+}
+
+static void handler(int s)
+{
+
+	signo[s] = 1;
+}
diff --git a/lib/readpassphrase.h b/lib/readpassphrase.h
new file mode 100644
index 0000000..2530b7f
--- /dev/null
+++ b/lib/readpassphrase.h
@@ -0,0 +1,47 @@
+/*	$OpenBSD: readpassphrase.h,v 1.4 2003/06/03 01:52:39 millert Exp $	*/
+
+/*
+ * Copyright (c) 2000, 2002 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+#ifndef LIBBSD_READPASSPHRASE_H
+#define LIBBSD_READPASSPHRASE_H
+
+#define RPP_ECHO_OFF    0x00		/* Turn off echo (default). */
+#define RPP_ECHO_ON     0x01		/* Leave echo on. */
+#define RPP_REQUIRE_TTY 0x02		/* Fail if there is no tty. */
+#define RPP_FORCELOWER  0x04		/* Force input to lower case. */
+#define RPP_FORCEUPPER  0x08		/* Force input to upper case. */
+#define RPP_SEVENBIT    0x10		/* Strip the high bit from input. */
+#define RPP_STDIN       0x20		/* Read from stdin, not /dev/tty */
+
+#ifdef LIBBSD_OVERLAY
+#include <sys/cdefs.h>
+#endif
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+char * readpassphrase(const char *, char *, size_t, int);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !LIBBSD_READPASSPHRASE_H */
diff --git a/libmisc/remove_tree.c b/lib/remove_tree.c
index 3d76b95..3d76b95 100644
--- a/libmisc/remove_tree.c
+++ b/lib/remove_tree.c
diff --git a/libmisc/rlogin.c b/lib/rlogin.c
index fa67dc3..cbc05dd 100644
--- a/libmisc/rlogin.c
+++ b/lib/rlogin.c
@@ -18,76 +18,36 @@
 #include <stdio.h>
 #include <pwd.h>
 #include <netdb.h>
+
+#include "atoi/str2i.h"
+
+
 static struct {
 	int spd_name;
 	int spd_baud;
 } speed_table[] =
 {
-#ifdef B50
-	{
-	B50, 50},
-#endif
-#ifdef B75
-	{
-	B75, 75},
-#endif
-#ifdef B110
-	{
-	B110, 110},
-#endif
-#ifdef B134
-	{
-	B134, 134},
-#endif
-#ifdef B150
-	{
-	B150, 150},
-#endif
-#ifdef B200
-	{
-	B200, 200},
-#endif
-#ifdef B300
-	{
-	B300, 300},
-#endif
-#ifdef B600
-	{
-	B600, 600},
-#endif
-#ifdef B1200
-	{
-	B1200, 1200},
-#endif
-#ifdef B1800
-	{
-	B1800, 1800},
-#endif
-#ifdef B2400
-	{
-	B2400, 2400},
-#endif
-#ifdef B4800
-	{
-	B4800, 4800},
-#endif
-#ifdef B9600
-	{
-	B9600, 9600},
-#endif
-#ifdef B19200
-	{
-	B19200, 19200},
-#endif
-#ifdef B38400
-	{
-	B38400, 38400},
-#endif
-	{
-	-1, -1}
+	{ B50, 50},
+	{ B75, 75},
+	{ B110, 110},
+	{ B134, 134},
+	{ B150, 150},
+	{ B200, 200},
+	{ B300, 300},
+	{ B600, 600},
+	{ B1200, 1200},
+	{ B1800, 1800},
+	{ B2400, 2400},
+	{ B4800, 4800},
+	{ B9600, 9600},
+	{ B19200, 19200},
+	{ B38400, 38400},
+	{ -1, -1}
 };
 
-static void get_remote_string (char *buf, size_t size)
+
+static void
+get_remote_string(char *buf, size_t size)
 {
 	for (;;) {
 		if (read (0, buf, 1) != 1) {
@@ -101,11 +61,13 @@ static void get_remote_string (char *buf, size_t size)
 			++buf;
 		}
 	}
- /*NOTREACHED*/}
+	/*NOTREACHED*/
+}
+
 
 int
-do_rlogin (const char *remote_host, char *name, size_t namelen, char *term,
-           size_t termlen)
+do_rlogin(const char *remote_host, char *name, size_t namesize, char *term,
+          size_t termsize)
 {
 	struct passwd *pwd;
 	char remote_name[32];
@@ -115,18 +77,17 @@ do_rlogin (const char *remote_host, char *name, size_t namelen, char *term,
 	int i;
 	TERMIO termio;
 
-	get_remote_string (remote_name, sizeof remote_name);
-	get_remote_string (name, namelen);
-	get_remote_string (term, termlen);
+	get_remote_string(remote_name, sizeof(remote_name));
+	get_remote_string(name, namesize);
+	get_remote_string(term, termsize);
 
 	cp = strchr (term, '/');
 	if (NULL != cp) {
 		*cp = '\0';
 		cp++;
 
-		if (getulong (cp, &remote_speed) == 0) {
+		if (str2ul(&remote_speed, cp) == -1)
 			remote_speed = 9600;
-		}
 	}
 	for (i = 0;
 	     (   (speed_table[i].spd_baud != remote_speed)
@@ -172,4 +133,3 @@ do_rlogin (const char *remote_host, char *name, size_t namelen, char *term,
 #endif
 }
 #endif				/* RLOGIN */
-
diff --git a/libmisc/root_flag.c b/lib/root_flag.c
index 62915b0..5572831 100644
--- a/libmisc/root_flag.c
+++ b/lib/root_flag.c
@@ -91,16 +91,16 @@ static void change_root (const char* newroot)
 		exit (E_BAD_ARG);
 	}
 
-	if (chdir (newroot) != 0) {
+	if (chroot (newroot) != 0) {
 		fprintf(log_get_logfd(),
-				_("%s: cannot chdir to chroot directory %s: %s\n"),
+			        _("%s: unable to chroot to directory %s: %s\n"),
 				log_get_progname(), newroot, strerror (errno));
 		exit (E_BAD_ARG);
 	}
 
-	if (chroot (newroot) != 0) {
+	if (chdir ("/") != 0) {
 		fprintf(log_get_logfd(),
-		        _("%s: unable to chroot to directory %s: %s\n"),
+			_("%s: cannot chdir in chroot directory %s: %s\n"),
 		        log_get_progname(), newroot, strerror (errno));
 		exit (E_BAD_ARG);
 	}
diff --git a/lib/run_part.c b/lib/run_part.c
index bce11d3..670d815 100644
--- a/lib/run_part.c
+++ b/lib/run_part.c
@@ -1,3 +1,5 @@
+#include <config.h>
+
 #include <dirent.h>
 #include <errno.h>
 #include <stdio.h>
@@ -8,9 +10,12 @@
 #include <sys/wait.h>
 #include <unistd.h>
 #include <lib/prototypes.h>
+
+#include "alloc.h"
 #include "run_part.h"
 #include "shadowlog_internal.h"
 
+
 int run_part (char *script_path, const char *name, const char *action)
 {
 	int pid;
@@ -53,25 +58,22 @@ int run_parts (const char *directory, const char *name, const char *action)
 	}
 
 	for (n=0; n<scanlist; n++) {
-		int path_length;
-		struct stat sb;
+		char         *s;
+		struct stat  sb;
 
-		path_length=strlen(directory) + strlen(namelist[n]->d_name) + 2;
-		char *s = (char*)malloc(path_length);
-		if (!s) {
-			printf ("could not allocate memory\n");
+		if (asprintf(&s, "%s/%s", directory, namelist[n]->d_name) == -1) {
+			fprintf(stderr, "could not allocate memory\n");
 			for (; n<scanlist; n++) {
-				free (namelist[n]);
+				free(namelist[n]);
 			}
-			free (namelist);
+			free(namelist);
 			return (1);
 		}
-		snprintf (s, path_length, "%s/%s", directory, namelist[n]->d_name);
 
 		execute_result = 0;
 		if (stat (s, &sb) == -1) {
 			perror ("stat");
-			free (s);
+			free(s);
 			for (; n<scanlist; n++) {
 				free (namelist[n]);
 			}
@@ -83,7 +85,7 @@ int run_parts (const char *directory, const char *name, const char *action)
 			execute_result = run_part (s, name, action);
 		}
 
-		free (s);
+		free(s);
 
 		if (execute_result!=0) {
 			fprintf (shadow_logfd,
diff --git a/libmisc/salt.c b/lib/salt.c
index e5f633a..529d59c 100644
--- a/libmisc/salt.c
+++ b/lib/salt.c
@@ -10,8 +10,6 @@
  *
  * Written by Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl>,
  * it is in the public domain.
- *
- * l64a was Written by J.T. Conklin <jtc@netbsd.org>. Public domain.
  */
 
 #include <config.h>
@@ -22,9 +20,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#if HAVE_SYS_RANDOM_H
-#include <sys/random.h>
-#endif
+#include <strings.h>
+
 #include "prototypes.h"
 #include "defines.h"
 #include "getdef.h"
@@ -91,13 +88,9 @@
 #define GENSALT_SETTING_SIZE 100
 
 /* local function prototypes */
-static long read_random_bytes (void);
 #if !USE_XCRYPT_GENSALT
 static /*@observer@*/const char *gensalt (size_t salt_size);
 #endif /* !USE_XCRYPT_GENSALT */
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
-static long shadow_random (long min, long max);
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
 #ifdef USE_SHA_CRYPT
 static /*@observer@*/unsigned long SHA_get_salt_rounds (/*@null@*/const int *prefered_rounds);
 static /*@observer@*/void SHA_salt_rounds_to_buf (char *buf, unsigned long rounds);
@@ -111,113 +104,6 @@ static /*@observer@*/unsigned long YESCRYPT_get_salt_cost (/*@null@*/const int *
 static /*@observer@*/void YESCRYPT_salt_cost_to_buf (char *buf, unsigned long cost);
 #endif /* USE_YESCRYPT */
 
-#if !USE_XCRYPT_GENSALT && !defined(HAVE_L64A)
-static /*@observer@*/char *l64a (long value)
-{
-	static char buf[8];
-	char *s = buf;
-	int digit;
-	int i;
-
-	if (value < 0) {
-		errno = EINVAL;
-		return(NULL);
-	}
-
-	for (i = 0; value != 0 && i < 6; i++) {
-		digit = value & 0x3f;
-
-		if (digit < 2) {
-			*s = digit + '.';
-		} else if (digit < 12) {
-			*s = digit + '0' - 2;
-		} else if (digit < 38) {
-			*s = digit + 'A' - 12;
-		} else {
-			*s = digit + 'a' - 38;
-		}
-
-		value >>= 6;
-		s++;
-	}
-
-	*s = '\0';
-
-	return buf;
-}
-#endif /* !USE_XCRYPT_GENSALT && !defined(HAVE_L64A) */
-
-/* Read sizeof (long) random bytes from /dev/urandom. */
-static long read_random_bytes (void)
-{
-	long randval = 0;
-
-#ifdef HAVE_ARC4RANDOM_BUF
-	/* arc4random_buf, if it exists, can never fail.  */
-	arc4random_buf (&randval, sizeof (randval));
-	goto end;
-#endif
-
-#ifdef HAVE_GETENTROPY
-	/* getentropy may exist but lack kernel support.  */
-	if (getentropy (&randval, sizeof (randval)) == 0) {
-		goto end;
-	}
-#endif
-
-#ifdef HAVE_GETRANDOM
-	/* Likewise getrandom.  */
-	if ((size_t) getrandom (&randval, sizeof (randval), 0) == sizeof (randval)) {
-		goto end;
-	}
-#endif
-
-	/* Use /dev/urandom as a last resort.  */
-	FILE *f = fopen ("/dev/urandom", "r");
-	if (NULL == f) {
-		goto fail;
-	}
-
-	if (fread (&randval, sizeof (randval), 1, f) != 1) {
-		fclose(f);
-		goto fail;
-	}
-
-	fclose(f);
-	goto end;
-
-fail:
-	fprintf (log_get_logfd(),
-		 _("Unable to obtain random bytes.\n"));
-	exit (1);
-
-end:
-	return randval;
-}
-
-#if defined(USE_SHA_CRYPT) || defined(USE_BCRYPT)
-/*
- * Return a random number between min and max (both included).
- *
- * It favors slightly the higher numbers.
- */
-static long shadow_random (long min, long max)
-{
-	double drand;
-	long ret;
-
-	drand = (double) (read_random_bytes () & RAND_MAX) / (double) RAND_MAX;
-	drand *= (double) (max - min + 1);
-	/* On systems were this is not random() range is lower, we favor
-	 * higher numbers of salt. */
-	ret = (long) (max + 1 - drand);
-	/* And we catch limits, and use the highest number */
-	if ((ret < min) || (ret > max)) {
-		ret = max;
-	}
-	return ret;
-}
-#endif /* USE_SHA_CRYPT || USE_BCRYPT */
 
 #ifdef USE_SHA_CRYPT
 /* Return the the rounds number for the SHA crypt methods. */
@@ -245,7 +131,7 @@ static /*@observer@*/unsigned long SHA_get_salt_rounds (/*@null@*/const int *pre
 				max_rounds = min_rounds;
 			}
 
-			rounds = (unsigned long) shadow_random (min_rounds, max_rounds);
+			rounds = csrand_interval (min_rounds, max_rounds);
 		}
 	} else if (0 == *prefered_rounds) {
 		rounds = SHA_ROUNDS_DEFAULT;
@@ -318,7 +204,7 @@ static /*@observer@*/unsigned long BCRYPT_get_salt_rounds (/*@null@*/const int *
 				max_rounds = min_rounds;
 			}
 
-			rounds = (unsigned long) shadow_random (min_rounds, max_rounds);
+			rounds = csrand_interval (min_rounds, max_rounds);
 		}
 	} else if (0 == *prefered_rounds) {
 		rounds = B_ROUNDS_DEFAULT;
@@ -435,13 +321,13 @@ static /*@observer@*/const char *gensalt (size_t salt_size)
 {
 	static char salt[MAX_SALT_SIZE + 6];
 
-	memset (salt, '\0', MAX_SALT_SIZE + 6);
+	bzero(salt, MAX_SALT_SIZE + 6);
 
 	assert (salt_size >= MIN_SALT_SIZE &&
 	        salt_size <= MAX_SALT_SIZE);
-	strcat (salt, l64a (read_random_bytes ()));
+	strcat (salt, l64a (csrand ()));
 	do {
-		strcat (salt, l64a (read_random_bytes ()));
+		strcat (salt, l64a (csrand ()));
 	} while (strlen (salt) < salt_size);
 
 	salt[salt_size] = '\0';
@@ -474,7 +360,7 @@ static /*@observer@*/const char *gensalt (size_t salt_size)
 	const char *method;
 	unsigned long rounds = 0;
 
-	memset (result, '\0', GENSALT_SETTING_SIZE);
+	bzero(result, GENSALT_SETTING_SIZE);
 
 	if (NULL != meth)
 		method = meth;
@@ -493,26 +379,26 @@ static /*@observer@*/const char *gensalt (size_t salt_size)
 	} else if (0 == strcmp (method, "BCRYPT")) {
 		BCRYPTMAGNUM(result);
 		salt_len = BCRYPT_SALT_SIZE;
-		rounds = BCRYPT_get_salt_rounds ((int *) arg);
+		rounds = BCRYPT_get_salt_rounds (arg);
 		BCRYPT_salt_rounds_to_buf (result, rounds);
 #endif /* USE_BCRYPT */
 #ifdef USE_YESCRYPT
 	} else if (0 == strcmp (method, "YESCRYPT")) {
 		MAGNUM(result, 'y');
 		salt_len = YESCRYPT_SALT_SIZE;
-		rounds = YESCRYPT_get_salt_cost ((int *) arg);
+		rounds = YESCRYPT_get_salt_cost (arg);
 		YESCRYPT_salt_cost_to_buf (result, rounds);
 #endif /* USE_YESCRYPT */
 #ifdef USE_SHA_CRYPT
 	} else if (0 == strcmp (method, "SHA256")) {
 		MAGNUM(result, '5');
 		salt_len = SHA_CRYPT_SALT_SIZE;
-		rounds = SHA_get_salt_rounds ((int *) arg);
+		rounds = SHA_get_salt_rounds (arg);
 		SHA_salt_rounds_to_buf (result, rounds);
 	} else if (0 == strcmp (method, "SHA512")) {
 		MAGNUM(result, '6');
 		salt_len = SHA_CRYPT_SALT_SIZE;
-		rounds = SHA_get_salt_rounds ((int *) arg);
+		rounds = SHA_get_salt_rounds (arg);
 		SHA_salt_rounds_to_buf (result, rounds);
 #endif /* USE_SHA_CRYPT */
 	} else if (0 != strcmp (method, "DES")) {
@@ -522,7 +408,7 @@ static /*@observer@*/const char *gensalt (size_t salt_size)
 			 method);
 		salt_len = MAX_SALT_SIZE;
 		rounds = 0;
-		memset (result, '\0', GENSALT_SETTING_SIZE);
+		bzero(result, GENSALT_SETTING_SIZE);
 	}
 
 #if USE_XCRYPT_GENSALT
@@ -534,7 +420,7 @@ static /*@observer@*/const char *gensalt (size_t salt_size)
 		/* Avoid -Wunused-but-set-variable. */
 		salt_len = GENSALT_SETTING_SIZE - 1;
 		rounds = 0;
-		memset (result, '.', salt_len);
+		memset(result, '.', salt_len);
 		result[salt_len] = '\0';
 	}
 
diff --git a/lib/selinux.c b/lib/selinux.c
index ad639bd..6eb2894 100644
--- a/lib/selinux.c
+++ b/lib/selinux.c
@@ -188,7 +188,7 @@ int check_selinux_permit (const char *perm_name)
 		return 0;
 	}
 
-	selinux_set_callback (SELINUX_CB_LOG, (union selinux_callback) selinux_log_cb);
+	selinux_set_callback (SELINUX_CB_LOG, (union selinux_callback) { .func_log = selinux_log_cb });
 
 	if (getprevcon_raw (&user_context_raw) != 0) {
 		fprintf (shadow_logfd,
@@ -206,5 +206,5 @@ int check_selinux_permit (const char *perm_name)
 }
 
 #else				/* !WITH_SELINUX */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !WITH_SELINUX */
diff --git a/lib/semanage.c b/lib/semanage.c
index 082a6e8..277e20e 100644
--- a/lib/semanage.c
+++ b/lib/semanage.c
@@ -16,19 +16,19 @@
 #endif
 #include <stdio.h>
 #include <stdarg.h>
+
 #include <selinux/selinux.h>
+
 #include <semanage/semanage.h>
+
+#include "attr.h"
 #include "prototypes.h"
 
 #include "shadowlog_internal.h"
 
-#ifndef DEFAULT_SERANGE
-#define DEFAULT_SERANGE "s0"
-#endif
-
 
 format_attr(printf, 3, 4)
-static void semanage_error_callback (unused void *varg,
+static void semanage_error_callback (MAYBE_UNUSED void *varg,
                                      semanage_handle_t *handle,
                                      const char *fmt, ...)
 {
@@ -101,6 +101,8 @@ static semanage_handle_t *semanage_init (void)
 	return handle;
 
 fail:
+	if (handle)
+		semanage_disconnect (handle);
 	semanage_handle_destroy (handle);
 	return NULL;
 }
@@ -109,7 +111,8 @@ fail:
 static int semanage_user_mod (semanage_handle_t *handle,
                               semanage_seuser_key_t *key,
                               const char *login_name,
-                              const char *seuser_name)
+                              const char *seuser_name,
+                              const char *serange)
 {
 	int ret;
 	semanage_seuser_t *seuser = NULL;
@@ -122,11 +125,12 @@ static int semanage_user_mod (semanage_handle_t *handle,
 		goto done;
 	}
 
-	if (semanage_mls_enabled(handle)) {
-		ret = semanage_seuser_set_mlsrange (handle, seuser, DEFAULT_SERANGE);
+	if (serange && semanage_mls_enabled(handle)) {
+		ret = semanage_seuser_set_mlsrange (handle, seuser, serange);
 		if (ret != 0) {
 			fprintf (shadow_logfd,
-			         _("Could not set serange for %s\n"), login_name);
+			         _("Could not set serange for %s to %s\n"),
+			         login_name, serange);
 			ret = 1;
 			goto done;
 		}
@@ -158,9 +162,10 @@ done:
 
 
 static int semanage_user_add (semanage_handle_t *handle,
-                             semanage_seuser_key_t *key,
+                             const semanage_seuser_key_t *key,
                              const char *login_name,
-                             const char *seuser_name)
+                             const char *seuser_name,
+                             const char *serange)
 {
 	int ret;
 	semanage_seuser_t *seuser = NULL;
@@ -181,11 +186,12 @@ static int semanage_user_add (semanage_handle_t *handle,
 		goto done;
 	}
 
-	if (semanage_mls_enabled(handle)) {
-		ret = semanage_seuser_set_mlsrange (handle, seuser, DEFAULT_SERANGE);
+	if (serange && semanage_mls_enabled(handle)) {
+		ret = semanage_seuser_set_mlsrange (handle, seuser, serange);
 		if (ret != 0) {
 			fprintf (shadow_logfd,
-			         _("Could not set serange for %s\n"), login_name);
+			         _("Could not set serange for %s to %s\n"),
+			         login_name, serange);
 			ret = 1;
 			goto done;
 		}
@@ -216,7 +222,7 @@ done:
 }
 
 
-int set_seuser (const char *login_name, const char *seuser_name)
+int set_seuser (const char *login_name, const char *seuser_name, const char *serange)
 {
 	semanage_handle_t *handle = NULL;
 	semanage_seuser_key_t *key = NULL;
@@ -250,7 +256,7 @@ int set_seuser (const char *login_name, const char *seuser_name)
 	}
 
 	if (0 != seuser_exists) {
-		ret = semanage_user_mod (handle, key, login_name, seuser_name);
+		ret = semanage_user_mod (handle, key, login_name, seuser_name, serange);
 		if (ret != 0) {
 			fprintf (shadow_logfd,
 			         _("Cannot modify SELinux user mapping\n"));
@@ -258,7 +264,7 @@ int set_seuser (const char *login_name, const char *seuser_name)
 			goto done;
 		}
 	} else {
-		ret = semanage_user_add (handle, key, login_name, seuser_name);
+		ret = semanage_user_add (handle, key, login_name, seuser_name, serange);
 		if (ret != 0) {
 			fprintf (shadow_logfd,
 			         _("Cannot add SELinux user mapping\n"));
@@ -279,6 +285,8 @@ int set_seuser (const char *login_name, const char *seuser_name)
 
 done:
 	semanage_seuser_key_free (key);
+	if (handle)
+		semanage_disconnect (handle);
 	semanage_handle_destroy (handle);
 	return ret;
 }
@@ -353,9 +361,12 @@ int del_seuser (const char *login_name)
 
 	ret = 0;
 done:
+	semanage_seuser_key_free (key);
+	if (handle)
+		semanage_disconnect (handle);
 	semanage_handle_destroy (handle);
 	return ret;
 }
 #else				/* !WITH_SELINUX */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !WITH_SELINUX */
diff --git a/libmisc/setugid.c b/lib/setugid.c
index 6dbe38e..6dbe38e 100644
--- a/libmisc/setugid.c
+++ b/lib/setugid.c
diff --git a/libmisc/setupenv.c b/lib/setupenv.c
index 5d7aefa..c9b7f26 100644
--- a/libmisc/setupenv.c
+++ b/lib/setupenv.c
@@ -20,26 +20,25 @@
 #include <sys/stat.h>
 #include <stdio.h>
 #include <ctype.h>
+
+#include "alloc.h"
 #include "prototypes.h"
 #include "defines.h"
 #include <pwd.h>
 #include "getdef.h"
 #include "shadowlog.h"
+#include "string/sprintf.h"
+
 
 #ifndef USE_PAM
 static void
-addenv_path (const char *varname, const char *dirname, const char *filename)
+addenv_path(const char *varname, const char *dirname, const char *filename)
 {
-	char *buf;
-	size_t len = strlen (dirname) + strlen (filename) + 2;
-	int wlen;
-
-	buf = xmalloc (len);
-	wlen = snprintf (buf, len, "%s/%s", dirname, filename);
-	assert (wlen == (int) len - 1);
+	char  *buf;
 
-	addenv (varname, buf);
-	free (buf);
+	xasprintf(&buf, "%s/%s", dirname, filename);
+	addenv(varname, buf);
+	free(buf);
 }
 
 static void read_env_file (const char *filename)
@@ -61,7 +60,7 @@ static void read_env_file (const char *filename)
 
 		cp = buf;
 		/* ignore whitespace and comments */
-		while (('\0' != *cp) && isspace (*cp)) {
+		while (isspace (*cp)) {
 			cp++;
 		}
 		if (('\0' == *cp) || ('#' == *cp)) {
@@ -194,8 +193,6 @@ void setup_env (struct passwd *info)
 	 */
 
 	if (chdir (info->pw_dir) == -1) {
-		static char temp_pw_dir[] = "/";
-
 		if (!getdef_bool ("DEFAULT_HOME") || chdir ("/") == -1) {
 			fprintf (log_get_logfd(), _("Unable to cd to '%s'\n"),
 				 info->pw_dir);
@@ -207,7 +204,7 @@ void setup_env (struct passwd *info)
 		}
 		(void) puts (_("No directory, logging in with HOME=/"));
 		free (info->pw_dir);
-		info->pw_dir = xstrdup (temp_pw_dir);
+		info->pw_dir = xstrdup ("/");
 	}
 
 	/*
@@ -221,10 +218,8 @@ void setup_env (struct passwd *info)
 	 */
 
 	if ((NULL == info->pw_shell) || ('\0' == *info->pw_shell)) {
-		static char temp_pw_shell[] = SHELL;
-
 		free (info->pw_shell);
-		info->pw_shell = xstrdup (temp_pw_shell);
+		info->pw_shell = xstrdup (SHELL);
 	}
 
 	addenv ("SHELL", info->pw_shell);
diff --git a/lib/sgetgrent.c b/lib/sgetgrent.c
index ad4fcc8..6cde15c 100644
--- a/lib/sgetgrent.c
+++ b/lib/sgetgrent.c
@@ -14,6 +14,9 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <grp.h>
+#include <string.h>
+
+#include "alloc.h"
 #include "defines.h"
 #include "prototypes.h"
 
@@ -25,19 +28,15 @@
  *	list() converts the comma-separated list of member names into
  *	an array of character pointers.
  *
- *	WARNING: I profiled this once with and without strchr() calls
- *	and found that using a register variable and an explicit loop
- *	works best.  For large /etc/group files, this is a major win.
- *
  * FINALLY added dynamic allocation.  Still need to fix sgetsgent().
  *  --marekm
  */
-static char **list (char *s)
+static char **
+list(char *s)
 {
-	static char **members = 0;
-	static int size = 0;	/* max members + 1 */
-	int i;
-	char **rbuf;
+	static char **members = NULL;
+	static size_t size = 0;	/* max members + 1 */
+	size_t i;
 
 	i = 0;
 	for (;;) {
@@ -45,40 +44,24 @@ static char **list (char *s)
 		   member name, or terminating NULL).  */
 		if (i >= size) {
 			size = i + 100;	/* at least: i + 1 */
-			if (members) {
-				rbuf =
-				    realloc (members, size * sizeof (char *));
-			} else {
-				/* for old (before ANSI C) implementations of
-				   realloc() that don't handle NULL properly */
-				rbuf = malloc (size * sizeof (char *));
-			}
-			if (!rbuf) {
-				free (members);
-				members = 0;
+			members = REALLOCF(members, size, char *);
+			if (!members) {
 				size = 0;
-				return (char **) 0;
+				return NULL;
 			}
-			members = rbuf;
 		}
 		if (!s || s[0] == '\0')
 			break;
-		members[i++] = s;
-		while (('\0' != *s) && (',' != *s)) {
-			s++;
-		}
-		if ('\0' != *s) {
-			*s++ = '\0';
-		}
+		members[i++] = strsep(&s, ",");
 	}
-	members[i] = (char *) 0;
+	members[i] = NULL;
 	return members;
 }
 
 
 struct group *sgetgrent (const char *buf)
 {
-	static char *grpbuf = 0;
+	static char *grpbuf = NULL;
 	static size_t size = 0;
 	static char *grpfields[NFIELDS];
 	static struct group grent;
@@ -90,10 +73,10 @@ struct group *sgetgrent (const char *buf)
 		   allocate a larger block */
 		free (grpbuf);
 		size = strlen (buf) + 1000;	/* at least: strlen(buf) + 1 */
-		grpbuf = malloc (size);
-		if (!grpbuf) {
+		grpbuf = MALLOC(size, char);
+		if (grpbuf == NULL) {
 			size = 0;
-			return 0;
+			return NULL;
 		}
 	}
 	strcpy (grpbuf, buf);
@@ -103,25 +86,20 @@ struct group *sgetgrent (const char *buf)
 		*cp = '\0';
 	}
 
-	for (cp = grpbuf, i = 0; (i < NFIELDS) && (NULL != cp); i++) {
-		grpfields[i] = cp;
-		cp = strchr (cp, ':');
-		if (NULL != cp) {
-			*cp = '\0';
-			cp++;
-		}
-	}
+	for (cp = grpbuf, i = 0; (i < NFIELDS) && (NULL != cp); i++)
+		grpfields[i] = strsep(&cp, ":");
+
 	if (i < (NFIELDS - 1) || *grpfields[2] == '\0' || cp != NULL) {
-		return (struct group *) 0;
+		return NULL;
 	}
 	grent.gr_name = grpfields[0];
 	grent.gr_passwd = grpfields[1];
-	if (get_gid (grpfields[2], &grent.gr_gid) == 0) {
-		return (struct group *) 0;
+	if (get_gid(grpfields[2], &grent.gr_gid) == -1) {
+		return NULL;
 	}
 	grent.gr_mem = list (grpfields[3]);
 	if (NULL == grent.gr_mem) {
-		return (struct group *) 0;	/* out of memory */
+		return NULL;	/* out of memory */
 	}
 
 	return &grent;
diff --git a/lib/sgetpwent.c b/lib/sgetpwent.c
index 1c8c63e..75c9177 100644
--- a/lib/sgetpwent.c
+++ b/lib/sgetpwent.c
@@ -12,9 +12,11 @@
 #ident "$Id$"
 
 #include <sys/types.h>
-#include "defines.h"
 #include <stdio.h>
 #include <pwd.h>
+#include <string.h>
+
+#include "defines.h"
 #include "prototypes.h"
 #include "shadowlog_internal.h"
 
@@ -32,7 +34,8 @@
  *	performance reasons.  I am going to come up with some conditional
  *	compilation glarp to improve on this in the future.
  */
-struct passwd *sgetpwent (const char *buf)
+struct passwd *
+sgetpwent(const char *buf)
 {
 	static struct passwd pwent;
 	static char pwdbuf[PASSWD_ENTRY_MAX_LENGTH];
@@ -58,19 +61,8 @@ struct passwd *sgetpwent (const char *buf)
 	 * field.  The fields are converted into NUL terminated strings.
 	 */
 
-	for (cp = pwdbuf, i = 0; (i < NFIELDS) && (NULL != cp); i++) {
-		fields[i] = cp;
-		while (('\0' != *cp) && (':' != *cp)) {
-			cp++;
-		}
-
-		if ('\0' != *cp) {
-			*cp = '\0';
-			cp++;
-		} else {
-			cp = NULL;
-		}
-	}
+	for (cp = pwdbuf, i = 0; (i < NFIELDS) && (NULL != cp); i++)
+		fields[i] = strsep(&cp, ":");
 
 	/* something at the end, columns over shot */
 	if ( cp != NULL ) {
@@ -94,10 +86,10 @@ struct passwd *sgetpwent (const char *buf)
 
 	pwent.pw_name = fields[0];
 	pwent.pw_passwd = fields[1];
-	if (get_uid (fields[2], &pwent.pw_uid) == 0) {
+	if (get_uid(fields[2], &pwent.pw_uid) == -1) {
 		return NULL;
 	}
-	if (get_gid (fields[3], &pwent.pw_gid) == 0) {
+	if (get_gid(fields[3], &pwent.pw_gid) == -1) {
 		return NULL;
 	}
 	pwent.pw_gecos = fields[4];
diff --git a/lib/sgetspent.c b/lib/sgetspent.c
index f1d4b20..bd2ef8b 100644
--- a/lib/sgetspent.c
+++ b/lib/sgetspent.c
@@ -14,17 +14,26 @@
 
 #ident "$Id$"
 
+#include <stddef.h>
+#include <stdio.h>
 #include <sys/types.h>
+#include <string.h>
+
+#include "atoi/str2i.h"
 #include "prototypes.h"
 #include "shadowlog_internal.h"
 #include "defines.h"
-#include <stdio.h>
+
+
 #define	FIELDS	9
 #define	OFIELDS	5
+
+
 /*
  * sgetspent - convert string in shadow file format to (struct spwd *)
  */
-struct spwd *sgetspent (const char *string)
+struct spwd *
+sgetspent(const char *string)
 {
 	static char spwbuf[PASSWD_ENTRY_MAX_LENGTH];
 	static struct spwd spwd;
@@ -41,7 +50,7 @@ struct spwd *sgetspent (const char *string)
 		fprintf (shadow_logfd,
 		         "%s: Too long passwd entry encountered, file corruption?\n",
 		         shadow_progname);
-		return 0;	/* fail if too long */
+		return NULL;	/* fail if too long */
 	}
 	strcpy (spwbuf, string);
 
@@ -57,9 +66,7 @@ struct spwd *sgetspent (const char *string)
 
 	for (cp = spwbuf, i = 0; ('\0' != *cp) && (i < FIELDS); i++) {
 		fields[i] = cp;
-		while (('\0' != *cp) && (':' != *cp)) {
-			cp++;
-		}
+		cp = strchrnul(cp, ':');
 
 		if ('\0' != *cp) {
 			*cp = '\0';
@@ -67,13 +74,12 @@ struct spwd *sgetspent (const char *string)
 		}
 	}
 
-	if (i == (FIELDS - 1)) {
-		fields[i++] = cp;
-	}
+	if (i == (FIELDS - 1))
+		fields[i++] = "";
 
 	if ( ((NULL != cp) && ('\0' != *cp)) ||
 	     ((i != FIELDS) && (i != OFIELDS)) ) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -92,9 +98,9 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[2][0] == '\0') {
 		spwd.sp_lstchg = -1;
-	} else if (   (getlong (fields[2], &spwd.sp_lstchg) == 0)
+	} else if (   (str2sl(&spwd.sp_lstchg, fields[2]) == -1)
 	           || (spwd.sp_lstchg < 0)) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -103,9 +109,9 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[3][0] == '\0') {
 		spwd.sp_min = -1;
-	} else if (   (getlong (fields[3], &spwd.sp_min) == 0)
+	} else if (   (str2sl(&spwd.sp_min, fields[3]) == -1)
 	           || (spwd.sp_min < 0)) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -114,9 +120,9 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[4][0] == '\0') {
 		spwd.sp_max = -1;
-	} else if (   (getlong (fields[4], &spwd.sp_max) == 0)
+	} else if (   (str2sl(&spwd.sp_max, fields[4]) == -1)
 	           || (spwd.sp_max < 0)) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -139,9 +145,9 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[5][0] == '\0') {
 		spwd.sp_warn = -1;
-	} else if (   (getlong (fields[5], &spwd.sp_warn) == 0)
+	} else if (   (str2sl(&spwd.sp_warn, fields[5]) == -1)
 	           || (spwd.sp_warn < 0)) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -151,9 +157,9 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[6][0] == '\0') {
 		spwd.sp_inact = -1;
-	} else if (   (getlong (fields[6], &spwd.sp_inact) == 0)
+	} else if (   (str2sl(&spwd.sp_inact, fields[6]) == -1)
 	           || (spwd.sp_inact < 0)) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -163,9 +169,9 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[7][0] == '\0') {
 		spwd.sp_expire = -1;
-	} else if (   (getlong (fields[7], &spwd.sp_expire) == 0)
+	} else if (   (str2sl(&spwd.sp_expire, fields[7]) == -1)
 	           || (spwd.sp_expire < 0)) {
-		return 0;
+		return NULL;
 	}
 
 	/*
@@ -175,13 +181,12 @@ struct spwd *sgetspent (const char *string)
 
 	if (fields[8][0] == '\0') {
 		spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
-	} else if (getulong (fields[8], &spwd.sp_flag) == 0) {
-		return 0;
+	} else if (str2ul(&spwd.sp_flag, fields[8]) == -1) {
+		return NULL;
 	}
 
 	return (&spwd);
 }
 #else
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif
-
diff --git a/lib/sgroupio.c b/lib/sgroupio.c
index 871749b..0297df4 100644
--- a/lib/sgroupio.c
+++ b/lib/sgroupio.c
@@ -14,10 +14,12 @@
 
 #ident "$Id$"
 
+#include "alloc.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "commonio.h"
 #include "getdef.h"
+#include "memzero.h"
 #include "sgroupio.h"
 
 /*@null@*/ /*@only@*/struct sgrp *__sgr_dup (const struct sgrp *sgent)
@@ -25,13 +27,12 @@
 	struct sgrp *sg;
 	int i;
 
-	sg = (struct sgrp *) malloc (sizeof *sg);
+	sg = CALLOC (1, struct sgrp);
 	if (NULL == sg) {
 		return NULL;
 	}
 	/* Do the same as the other _dup function, even if we know the
 	 * structure. */
-	memset (sg, 0, sizeof *sg);
 	/*@-mustfreeonly@*/
 	sg->sg_name = strdup (sgent->sg_name);
 	/*@=mustfreeonly@*/
@@ -50,7 +51,7 @@
 
 	for (i = 0; NULL != sgent->sg_adm[i]; i++);
 	/*@-mustfreeonly@*/
-	sg->sg_adm = (char **) malloc ((i + 1) * sizeof (char *));
+	sg->sg_adm = MALLOC(i + 1, char *);
 	/*@=mustfreeonly@*/
 	if (NULL == sg->sg_adm) {
 		free (sg->sg_passwd);
@@ -75,7 +76,7 @@
 
 	for (i = 0; NULL != sgent->sg_mem[i]; i++);
 	/*@-mustfreeonly@*/
-	sg->sg_mem = (char **) malloc ((i + 1) * sizeof (char *));
+	sg->sg_mem = MALLOC(i + 1, char *);
 	/*@=mustfreeonly@*/
 	if (NULL == sg->sg_mem) {
 		for (i = 0; NULL != sg->sg_adm[i]; i++) {
@@ -116,14 +117,16 @@ static /*@null@*/ /*@only@*/void *gshadow_dup (const void *ent)
 	return __sgr_dup (sg);
 }
 
-static void gshadow_free (/*@out@*/ /*@only@*/void *ent)
+static void
+gshadow_free(/*@only@*/void *ent)
 {
 	struct sgrp *sg = ent;
 
 	sgr_free (sg);
 }
 
-void sgr_free (/*@out@*/ /*@only@*/struct sgrp *sgent)
+void
+sgr_free(/*@only@*/struct sgrp *sgent)
 {
 	size_t i;
 	free (sgent->sg_name);
@@ -151,7 +154,7 @@ static const char *gshadow_getname (const void *ent)
 
 static void *gshadow_parse (const char *line)
 {
-	return (void *) sgetsgent (line);
+	return sgetsgent (line);
 }
 
 static int gshadow_put (const void *ent, FILE * file)
@@ -253,7 +256,7 @@ int sgr_open (int mode)
 
 int sgr_update (const struct sgrp *sg)
 {
-	return commonio_update (&gshadow_db, (const void *) sg);
+	return commonio_update (&gshadow_db, sg);
 }
 
 int sgr_remove (const char *name)
@@ -302,5 +305,5 @@ int sgr_sort ()
 	return commonio_sort_wrt (&gshadow_db, __gr_get_db ());
 }
 #else
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif
diff --git a/lib/shadow.c b/lib/shadow.c
index b628b65..f17d09e 100644
--- a/lib/shadow.c
+++ b/lib/shadow.c
@@ -18,54 +18,15 @@
 #include "prototypes.h"
 #include "defines.h"
 #include <stdio.h>
-#ifdef	USE_NIS
-static bool nis_used;
-static bool nis_ignore;
-static enum { native, start, middle, native2 } nis_state;
-static bool nis_bound;
-static char *nis_domain;
-static char *nis_key;
-static int nis_keylen;
-static char *nis_val;
-static int nis_vallen;
-
-#define	IS_NISCHAR(c) ((c)=='+')
-#endif
+
+#include "atoi/str2i.h"
+
 
 static FILE *shadow;
 
 #define	FIELDS	9
 #define	OFIELDS	5
 
-#ifdef	USE_NIS
-
-/*
- * __setspNIS - turn on or off NIS searches
- */
-
-void __setspNIS (bool flag)
-{
-	nis_ignore = !flag;
-
-	if (nis_ignore) {
-		nis_used = false;
-	}
-}
-
-/*
- * bind_nis - bind to NIS server
- */
-
-static int bind_nis (void)
-{
-	if (yp_get_default_domain (&nis_domain)) {
-		return -1;
-	}
-
-	nis_bound = true;
-	return 0;
-}
-#endif
 
 /*
  * setspent - initialize access to shadow text and DBM files
@@ -78,10 +39,6 @@ void setspent (void)
 	}else {
 		shadow = fopen (SHADOW_FILE, "r");
 	}
-
-#ifdef	USE_NIS
-	nis_state = native;
-#endif
 }
 
 /*
@@ -94,7 +51,7 @@ void endspent (void)
 		(void) fclose (shadow);
 	}
 
-	shadow = (FILE *) 0;
+	shadow = NULL;
 }
 
 /*
@@ -150,11 +107,6 @@ static struct spwd *my_sgetspent (const char *string)
 	 */
 
 	spwd.sp_namp = fields[0];
-#ifdef	USE_NIS
-	if (IS_NISCHAR (fields[0][0])) {
-		nis_used = true;
-	}
-#endif
 	spwd.sp_pwdp = fields[1];
 
 	/*
@@ -166,16 +118,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[2][0] == '\0') {
 		spwd.sp_lstchg = -1;
 	} else {
-		if (getlong (fields[2], &spwd.sp_lstchg) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_lstchg = -1;
-			} else
-#endif
-				return 0;
-		} else if (spwd.sp_lstchg < 0) {
+		if (str2sl(&spwd.sp_lstchg, fields[2]) == -1)
+			return 0;
+		if (spwd.sp_lstchg < 0)
 			return 0;
-		}
 	}
 
 	/*
@@ -185,18 +131,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[3][0] == '\0') {
 		spwd.sp_min = -1;
 	} else {
-		if (getlong (fields[3], &spwd.sp_min) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_min = -1;
-			} else
-#endif
-			{
-				return 0;
-			}
-		} else if (spwd.sp_min < 0) {
+		if (str2sl(&spwd.sp_min, fields[3]) == -1)
+			return 0;
+		if (spwd.sp_min < 0)
 			return 0;
-		}
 	}
 
 	/*
@@ -206,16 +144,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[4][0] == '\0') {
 		spwd.sp_max = -1;
 	} else {
-		if (getlong (fields[4], &spwd.sp_max) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_max = -1;
-			} else
-#endif
-				return 0;
-		} else if (spwd.sp_max < 0) {
+		if (str2sl(&spwd.sp_max, fields[4]) == -1)
+			return 0;
+		if (spwd.sp_max < 0)
 			return 0;
-		}
 	}
 
 	/*
@@ -239,18 +171,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[5][0] == '\0') {
 		spwd.sp_warn = -1;
 	} else {
-		if (getlong (fields[5], &spwd.sp_warn) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_warn = -1;
-			} else
-#endif
-			{
-				return 0;
-			}
-		} else if (spwd.sp_warn < 0) {
+		if (str2sl(&spwd.sp_warn, fields[5]) == -1)
+			return 0;
+		if (spwd.sp_warn < 0)
 			return 0;
-		}
 	}
 
 	/*
@@ -261,18 +185,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[6][0] == '\0') {
 		spwd.sp_inact = -1;
 	} else {
-		if (getlong (fields[6], &spwd.sp_inact) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_inact = -1;
-			} else
-#endif
-			{
-				return 0;
-			}
-		} else if (spwd.sp_inact < 0) {
+		if (str2sl(&spwd.sp_inact, fields[6]) == -1)
+			return 0;
+		if (spwd.sp_inact < 0)
 			return 0;
-		}
 	}
 
 	/*
@@ -283,18 +199,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[7][0] == '\0') {
 		spwd.sp_expire = -1;
 	} else {
-		if (getlong (fields[7], &spwd.sp_expire) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_expire = -1;
-			} else
-#endif
-			{
-				return 0;
-			}
-		} else if (spwd.sp_expire < 0) {
+		if (str2sl(&spwd.sp_expire, fields[7]) == -1)
+			return 0;
+		if (spwd.sp_expire < 0)
 			return 0;
-		}
 	}
 
 	/*
@@ -305,18 +213,10 @@ static struct spwd *my_sgetspent (const char *string)
 	if (fields[8][0] == '\0') {
 		spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
 	} else {
-		if (getulong (fields[8], &spwd.sp_flag) == 0) {
-#ifdef	USE_NIS
-			if (nis_used) {
-				spwd.sp_flag = SHADOW_SP_FLAG_UNSET;
-			} else
-#endif
-			{
-				return 0;
-			}
-		} else if (spwd.sp_flag < 0) {
+		if (str2ul(&spwd.sp_flag, fields[8]) == -1)
+			return 0;
+		if (spwd.sp_flag < 0)
 			return 0;
-		}
 	}
 
 	return (&spwd);
@@ -335,21 +235,12 @@ struct spwd *fgetspent (FILE * fp)
 		return (0);
 	}
 
-#ifdef	USE_NIS
-	while (fgets (buf, (int) sizeof buf, fp) != (char *) 0)
-#else
-	if (fgets (buf, (int) sizeof buf, fp) != (char *) 0)
-#endif
+	if (fgets (buf, sizeof buf, fp) != NULL)
 	{
 		cp = strchr (buf, '\n');
 		if (NULL != cp) {
 			*cp = '\0';
 		}
-#ifdef	USE_NIS
-		if (nis_ignore && IS_NISCHAR (buf[0])) {
-			continue;
-		}
-#endif
 		return my_sgetspent (buf);
 	}
 	return 0;
@@ -361,92 +252,10 @@ struct spwd *fgetspent (FILE * fp)
 
 struct spwd *getspent (void)
 {
-#ifdef	USE_NIS
-	int nis_1_user = 0;
-	struct spwd *val;
-#endif
 	if (NULL == shadow) {
 		setspent ();
 	}
-
-#ifdef	USE_NIS
-      again:
-	/*
-	 * See if we are reading from the local file.
-	 */
-
-	if (nis_state == native || nis_state == native2) {
-
-		/*
-		 * Get the next entry from the shadow file.  Return NULL
-		 * right away if there is none.
-		 */
-
-		val = fgetspent (shadow);
-		if (NULL == val)
-			return 0;
-
-		/*
-		 * If this entry began with a NIS escape character, we have
-		 * to see if this is just a single user, or if the entire
-		 * map is being asked for.
-		 */
-
-		if (IS_NISCHAR (val->sp_namp[0])) {
-			if (val->sp_namp[1])
-				nis_1_user = 1;
-			else
-				nis_state = start;
-		}
-
-		/*
-		 * If this isn't a NIS user and this isn't an escape to go
-		 * use a NIS map, it must be a regular local user.
-		 */
-
-		if (nis_1_user == 0 && nis_state != start)
-			return val;
-
-		/*
-		 * If this is an escape to use an NIS map, switch over to
-		 * that bunch of code.
-		 */
-
-		if (nis_state == start)
-			goto again;
-
-		/*
-		 * NEEDSWORK.  Here we substitute pieces-parts of this entry.
-		 */
-
-		return 0;
-	} else {
-		if (!nis_bound) {
-			if (bind_nis ()) {
-				nis_state = native2;
-				goto again;
-			}
-		}
-		if (nis_state == start) {
-			if (yp_first (nis_domain, "shadow.bynam", &nis_key,
-			              &nis_keylen, &nis_val, &nis_vallen)) {
-				nis_state = native2;
-				goto again;
-			}
-			nis_state = middle;
-		} else if (nis_state == middle) {
-			if (yp_next (nis_domain, "shadow.bynam", nis_key,
-			             nis_keylen, &nis_key, &nis_keylen,
-			             &nis_val, &nis_vallen)) {
-				nis_state = native2;
-				goto again;
-			}
-		}
-		return my_sgetspent (nis_val);
-	}
-#else
 	return (fgetspent (shadow));
-#endif
 }
 
 /*
@@ -457,74 +266,16 @@ struct spwd *getspnam (const char *name)
 {
 	struct spwd *sp;
 
-#ifdef	USE_NIS
-	static char save_name[16];
-	bool nis_disabled = false;
-#endif
-
 	setspent ();
 
-#ifdef	USE_NIS
-	/*
-	 * Search the shadow.byname map for this user.
-	 */
-
-	if (!nis_ignore && !nis_bound) {
-		bind_nis ();
-	}
-
-	if (!nis_ignore && nis_bound) {
-		char *cp;
-
-		if (yp_match (nis_domain, "shadow.byname", name,
-		              strlen (name), &nis_val, &nis_vallen) == 0) {
-
-			cp = strchr (nis_val, '\n');
-			if (NULL != cp) {
-				*cp = '\0';
-			}
-
-			nis_state = middle;
-			sp = my_sgetspent (nis_val);
-			if (NULL != sp) {
-				strcpy (save_name, sp->sp_namp);
-				nis_key = save_name;
-				nis_keylen = strlen (save_name);
-			}
-			endspent ();
-			return sp;
-		} else {
-			nis_state = native2;
-		}
-	}
-#endif
-#ifdef	USE_NIS
-	/*
-	 * NEEDSWORK -- this is a mess, and it is the same mess in the
-	 * other three files.  I can't just blindly turn off NIS because
-	 * this might be the first pass through the local files.  In
-	 * that case, I never discover that NIS is present.
-	 */
-
-	if (nis_used) {
-		nis_ignore = true;
-		nis_disabled = true;
-	}
-#endif
-	while ((sp = getspent ()) != (struct spwd *) 0) {
+	while ((sp = getspent ()) != NULL) {
 		if (strcmp (name, sp->sp_namp) == 0) {
 			break;
 		}
 	}
-#ifdef	USE_NIS
-	if (nis_disabled) {
-		nis_ignore = false;
-	}
-#endif
 	endspent ();
 	return (sp);
 }
 #else
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif
-
diff --git a/lib/shadowio.c b/lib/shadowio.c
index 683b6c8..d2c3b47 100644
--- a/lib/shadowio.c
+++ b/lib/shadowio.c
@@ -31,7 +31,8 @@ static /*@null@*/ /*@only@*/void *shadow_dup (const void *ent)
 	return __spw_dup (sp);
 }
 
-static void shadow_free (/*@out@*//*@only@*/void *ent)
+static void
+shadow_free(/*@only@*/void *ent)
 {
 	struct spwd *sp = ent;
 
@@ -47,7 +48,7 @@ static const char *shadow_getname (const void *ent)
 
 static void *shadow_parse (const char *line)
 {
-	return (void *) sgetspent (line);
+	return sgetspent (line);
 }
 
 static int shadow_put (const void *ent, FILE * file)
@@ -164,7 +165,7 @@ int spw_open (int mode)
 
 int spw_update (const struct spwd *sp)
 {
-	return commonio_update (&shadow_db, (const void *) sp);
+	return commonio_update (&shadow_db, sp);
 }
 
 int spw_remove (const char *name)
diff --git a/lib/shadowlog_internal.h b/lib/shadowlog_internal.h
index 72a0e0c..f972a3c 100644
--- a/lib/shadowlog_internal.h
+++ b/lib/shadowlog_internal.h
@@ -2,6 +2,6 @@
 #define _SHADOWLOG_INTERNAL_H
 
 extern const char *shadow_progname; /* Program name showed in error messages */
-extern FILE *shadow_logfd;  /* file descripter to which error messages are printed */
+extern FILE *shadow_logfd;  /* file descriptor to which error messages are printed */
 
 #endif /* _SHADOWLOG_INTERNAL_H */
diff --git a/lib/shadowmem.c b/lib/shadowmem.c
index 82f99e7..9d8f193 100644
--- a/lib/shadowmem.c
+++ b/lib/shadowmem.c
@@ -16,18 +16,20 @@
 #include "defines.h"
 #include <shadow.h>
 #include <stdio.h>
+
+#include "alloc.h"
+#include "memzero.h"
 #include "shadowio.h"
 
 /*@null@*/ /*@only@*/struct spwd *__spw_dup (const struct spwd *spent)
 {
 	struct spwd *sp;
 
-	sp = (struct spwd *) malloc (sizeof *sp);
+	sp = CALLOC (1, struct spwd);
 	if (NULL == sp) {
 		return NULL;
 	}
 	/* The libc might define other fields. They won't be copied. */
-	memset (sp, 0, sizeof *sp);
 	sp->sp_lstchg = spent->sp_lstchg;
 	sp->sp_min    = spent->sp_min;
 	sp->sp_max    = spent->sp_max;
@@ -54,7 +56,8 @@
 	return sp;
 }
 
-void spw_free (/*@out@*/ /*@only@*/struct spwd *spent)
+void
+spw_free(/*@only@*/struct spwd *spent)
 {
 	if (spent != NULL) {
 		free (spent->sp_namp);
diff --git a/libmisc/shell.c b/lib/shell.c
index 7c67500..25ef3e3 100644
--- a/libmisc/shell.c
+++ b/lib/shell.c
@@ -15,6 +15,9 @@
 #include <errno.h>
 #include "prototypes.h"
 #include "defines.h"
+#include "string/sprintf.h"
+
+
 extern char **newenvp;
 extern size_t newenvc;
 
@@ -30,10 +33,10 @@ extern size_t newenvc;
 
 int shell (const char *file, /*@null@*/const char *arg, char *const envp[])
 {
-	char arg0[1024];
-	int err;
+	int   err;
+	char  arg0[1024];
 
-	if (file == (char *) 0) {
+	if (file == NULL) {
 		errno = EINVAL;
 		return errno;
 	}
@@ -44,9 +47,8 @@ int shell (const char *file, /*@null@*/const char *arg, char *const envp[])
 	 * that.  So, we determine the 0'th entry only if they
 	 * don't want to tell us what it is themselves.
 	 */
-	if (arg == (char *) 0) {
-		(void) snprintf (arg0, sizeof arg0, "-%s", Basename (file));
-		arg0[sizeof arg0 - 1] = '\0';
+	if (arg == NULL) {
+		SNPRINTF(arg0, "-%s", Basename(file));
 		arg = arg0;
 	}
 
@@ -55,7 +57,7 @@ int shell (const char *file, /*@null@*/const char *arg, char *const envp[])
 	 * able to figure out what we are up to without too much
 	 * grief.
 	 */
-	(void) execle (file, arg, (char *) 0, envp);
+	(void) execle (file, arg, (char *) NULL, envp);
 	err = errno;
 
 	if (access (file, R_OK|X_OK) == 0) {
@@ -63,7 +65,7 @@ int shell (const char *file, /*@null@*/const char *arg, char *const envp[])
 		 * Assume this is a shell script (with no shebang).
 		 * Interpret it with /bin/sh
 		 */
-		(void) execle (SHELL, "sh", "-", file, (char *)0, envp);
+		(void) execle (SHELL, "sh", "-", file, (char *) NULL, envp);
 		err = errno;
 	}
 
@@ -72,7 +74,7 @@ int shell (const char *file, /*@null@*/const char *arg, char *const envp[])
 	 * how to execute this stupid shell, so I might as well give
 	 * up in disgust ...
 	 */
-	(void) snprintf (arg0, sizeof arg0, _("Cannot execute %s"), file);
+	SNPRINTF(arg0, _("Cannot execute %s"), file);
 	errno = err;
 	perror (arg0);
 	return err;
diff --git a/lib/sizeof.h b/lib/sizeof.h
new file mode 100644
index 0000000..6847068
--- /dev/null
+++ b/lib/sizeof.h
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIBMISC_SIZEOF_H_
+#define SHADOW_INCLUDE_LIBMISC_SIZEOF_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+
+#include "must_be.h"
+
+
+#define memberof(T, member)  ((T){}.member)
+#define WIDTHOF(x)           (sizeof(x) * CHAR_BIT)
+#define SIZEOF_ARRAY(a)      (sizeof(a) + must_be_array(a))
+#define NITEMS(a)            (SIZEOF_ARRAY((a)) / sizeof((a)[0]))
+#define STRLEN(s)            (NITEMS(s) - 1)
+
+
+#endif  // include guard
diff --git a/lib/spawn.c b/lib/spawn.c
index ce1a97d..57a4121 100644
--- a/lib/spawn.c
+++ b/lib/spawn.c
@@ -17,8 +17,9 @@
 
 #include "shadowlog_internal.h"
 
-int run_command (const char *cmd, const char *argv[],
-                 /*@null@*/const char *envp[], /*@out@*/int *status)
+int
+run_command(const char *cmd, const char *argv[],
+            /*@null@*/const char *envp[], int *restrict status)
 {
 	pid_t pid, wpid;
 
diff --git a/lib/sssd.c b/lib/sssd.c
index 786ccd6..fadb378 100644
--- a/lib/sssd.c
+++ b/lib/sssd.c
@@ -4,8 +4,11 @@
 #ifdef USE_SSSD
 
 #include <stdio.h>
+#include <sys/stat.h>
 #include <sys/wait.h>
 #include <sys/types.h>
+
+#include "alloc.h"
 #include "exitcodes.h"
 #include "defines.h"
 #include "prototypes.h"
@@ -19,12 +22,17 @@ int sssd_flush_cache (int dbflags)
 {
 	int status, code, rv;
 	const char *cmd = "/usr/sbin/sss_cache";
+	struct stat sb;
 	char *sss_cache_args = NULL;
 	const char *spawnedArgs[] = {"sss_cache", NULL, NULL};
 	const char *spawnedEnv[] = {NULL};
 	int i = 0;
 
-	sss_cache_args = malloc(4);
+	rv = stat(cmd, &sb);
+	if (rv == -1 && errno == ENOENT)
+		return 0;
+
+	sss_cache_args = MALLOC(4, char);
 	if (sss_cache_args == NULL) {
 	    return -1;
 	}
@@ -70,6 +78,6 @@ int sssd_flush_cache (int dbflags)
 	return 0;
 }
 #else				/* USE_SSSD */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* USE_SSSD */
 
diff --git a/lib/string/sprintf.c b/lib/string/sprintf.c
new file mode 100644
index 0000000..cf3c210
--- /dev/null
+++ b/lib/string/sprintf.c
@@ -0,0 +1,24 @@
+/*
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include "string/sprintf.h"
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+
+extern inline int xasprintf(char **restrict s, const char *restrict fmt, ...);
+extern inline int xvasprintf(char **restrict s, const char *restrict fmt,
+    va_list ap);
+
+extern inline int snprintf_(char *restrict s, size_t size,
+    const char *restrict fmt, ...);
+extern inline int vsnprintf_(char *restrict s, size_t size,
+    const char *restrict fmt, va_list ap);
diff --git a/lib/string/sprintf.h b/lib/string/sprintf.h
new file mode 100644
index 0000000..7485369
--- /dev/null
+++ b/lib/string/sprintf.h
@@ -0,0 +1,97 @@
+/*
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_SPRINTF_H_
+#define SHADOW_INCLUDE_LIB_SPRINTF_H_
+
+
+#include <config.h>
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include "attr.h"
+#include "defines.h"
+#include "sizeof.h"
+
+
+#define SNPRINTF(s, fmt, ...)                                                 \
+	snprintf_(s, NITEMS(s), fmt __VA_OPT__(,) __VA_ARGS__)
+
+
+format_attr(printf, 2, 3)
+inline int xasprintf(char **restrict s, const char *restrict fmt, ...);
+format_attr(printf, 2, 0)
+inline int xvasprintf(char **restrict s, const char *restrict fmt, va_list ap);
+
+format_attr(printf, 3, 4)
+inline int snprintf_(char *restrict s, size_t size, const char *restrict fmt,
+    ...);
+format_attr(printf, 3, 0)
+inline int vsnprintf_(char *restrict s, size_t size, const char *restrict fmt,
+    va_list ap);
+
+
+inline int
+xasprintf(char **restrict s, const char *restrict fmt, ...)
+{
+	int      len;
+	va_list  ap;
+
+	va_start(ap, fmt);
+	len = xvasprintf(s, fmt, ap);
+	va_end(ap);
+
+	return len;
+}
+
+
+inline int
+xvasprintf(char **restrict s, const char *restrict fmt, va_list ap)
+{
+	int  len;
+
+	len = vasprintf(s, fmt, ap);
+	if (len == -1) {
+		perror("asprintf");
+		exit(EXIT_FAILURE);
+	}
+
+	return len;
+}
+
+
+inline int
+snprintf_(char *restrict s, size_t size, const char *restrict fmt, ...)
+{
+	int      len;
+	va_list  ap;
+
+	va_start(ap, fmt);
+	len = vsnprintf_(s, size, fmt, ap);
+	va_end(ap);
+
+	return len;
+}
+
+
+inline int
+vsnprintf_(char *restrict s, size_t size, const char *restrict fmt, va_list ap)
+{
+	int  len;
+
+	len = vsnprintf(s, size, fmt, ap);
+	if (len == -1)
+		return -1;
+	if ((size_t) len >= size)
+		return -1;
+
+	return len;
+}
+
+
+#endif  // include guard
diff --git a/lib/string/stpecpy.c b/lib/string/stpecpy.c
new file mode 100644
index 0000000..9759388
--- /dev/null
+++ b/lib/string/stpecpy.c
@@ -0,0 +1,20 @@
+/*
+ * SPDX-FileCopyrightText:  2022 - 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#if !defined(HAVE_STPECPY)
+
+#ident "$Id$"
+
+#include "string/stpecpy.h"
+
+
+extern inline char *stpecpy(char *dst, char *end, const char *restrict src);
+
+
+#endif  // !HAVE_STPECPY
diff --git a/lib/string/stpecpy.h b/lib/string/stpecpy.h
new file mode 100644
index 0000000..2324baa
--- /dev/null
+++ b/lib/string/stpecpy.h
@@ -0,0 +1,90 @@
+/*
+ * SPDX-FileCopyrightText:  2022 - 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_STPECPY_H_
+#define SHADOW_INCLUDE_LIB_STPECPY_H_
+
+
+#include <config.h>
+
+#if !defined(HAVE_STPECPY)
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "attr.h"
+
+
+ATTR_STRING(3)
+inline char *stpecpy(char *dst, char *end, const char *restrict src);
+
+
+/*
+ * SYNOPSIS
+ *	[[gnu::null_terminated_string_arg(3)]]
+ *	char *_Nullable stpecpy(char *_Nullable dst, char end[0],
+ *	                        const char *restrict src);
+ *
+ * ARGUMENTS
+ *	dst	Destination buffer where to copy a string.
+ *
+ *	end	Pointer to one after the last element of the buffer
+ *		pointed to by `dst`.  Usually, it should be calculated
+ *		as `dst + NITEMS(dst)`.
+ *
+ *	src	Source string to be copied into dst.
+ *
+ * DESCRIPTION
+ *	This function copies the string pointed to by src, into a string
+ *	at the buffer pointed to by dst.  If the destination buffer,
+ *	limited by a pointer to its end --one after its last element--,
+ *	isn't large enough to hold the copy, the resulting string is
+ *	truncated.
+ *
+ *	This function can be chained with calls to [v]stpeprintf().
+ *
+ * RETURN VALUE
+ *	dst + strlen(dst)
+ *		•  On success, this function returns a pointer to the
+ *		   terminating NUL byte.
+ *
+ *	end
+ *		•  If this call truncated the resulting string.
+ *		•  If `dst == end` (a previous chained call to these
+ *		   functions truncated).
+ *	NULL
+ *		•  If `dst == NULL` (a previous chained call to
+ *		   [v]stpeprintf() failed).
+ *
+ * ERRORS
+ *	This function doesn't set errno.
+ */
+
+
+inline char *
+stpecpy(char *dst, char *end, const char *restrict src)
+{
+	bool    trunc;
+	size_t  dsize, dlen, slen;
+
+	if (dst == end)
+		return end;
+	if (dst == NULL)
+		return NULL;
+
+	dsize = end - dst;
+	slen = strnlen(src, dsize);
+	trunc = (slen == dsize);
+	dlen = slen - trunc;
+
+	return stpcpy(mempcpy(dst, src, dlen), "") + trunc;
+}
+
+
+#endif  // !HAVE_STPECPY
+#endif  // include guard
diff --git a/lib/string/stpeprintf.c b/lib/string/stpeprintf.c
new file mode 100644
index 0000000..cecd95d
--- /dev/null
+++ b/lib/string/stpeprintf.c
@@ -0,0 +1,25 @@
+/*
+ * SPDX-FileCopyrightText:  2022 - 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#if !defined(HAVE_STPEPRINTF)
+
+#ident "$Id$"
+
+#include "string/stpeprintf.h"
+
+#include <stdarg.h>
+
+
+extern inline char *stpeprintf(char *dst, char *end, const char *restrict fmt,
+    ...);
+extern inline char *vstpeprintf(char *dst, char *end, const char *restrict fmt,
+    va_list ap);
+
+
+#endif  // !HAVE_STPEPRINTF
diff --git a/lib/string/stpeprintf.h b/lib/string/stpeprintf.h
new file mode 100644
index 0000000..14ee7b6
--- /dev/null
+++ b/lib/string/stpeprintf.h
@@ -0,0 +1,120 @@
+/*
+ * SPDX-FileCopyrightText:  2022 - 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier:  BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_STPEPRINTF_H_
+#define SHADOW_INCLUDE_LIB_STPEPRINTF_H_
+
+
+#include <config.h>
+
+#if !defined(HAVE_STPEPRINTF)
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include "attr.h"
+#include "defines.h"
+
+
+format_attr(printf, 3, 4)
+inline char *stpeprintf(char *dst, char *end, const char *restrict fmt, ...);
+
+format_attr(printf, 3, 0)
+inline char *vstpeprintf(char *dst, char *end, const char *restrict fmt,
+    va_list ap);
+
+
+/*
+ * SYNOPSIS
+ *	[[gnu::format(printf, 3, 4)]]
+ *	char *_Nullable stpeprintf(char *_Nullable dst, char end[0],
+ *	                           const char *restrict fmt, ...);
+ *
+ *	[[gnu::format(printf, 3, 0)]]
+ *	char *_Nullable vstpeprintf(char *_Nullable dst, char end[0],
+ *	                           const char *restrict fmt, va_list ap);
+ *
+ *
+ * ARGUMENTS
+ *	dst	Destination buffer where to write a string.
+ *
+ *	end	Pointer to one after the last element of the buffer
+ *		pointed to by `dst`.  Usually, it should be calculated
+ *		as `dst + NITEMS(dst)`.
+ *
+ *	fmt	Format string
+ *
+ *	...
+ *	ap	Variadic argument list
+ *
+ * DESCRIPTION
+ *	These functions are very similar to [v]snprintf(3).
+ *
+ *	The destination buffer is limited by a pointer to its end --one
+ *	after its last element-- instead of a size.  This allows
+ *	chaining calls to it safely, unlike [v]snprintf(3), which is
+ *	difficult to chain without invoking Undefined Behavior.
+ *
+ * RETURN VALUE
+ *	dst + strlen(dst)
+ *		•  On success, these functions return a pointer to the
+ *		   terminating NUL byte.
+ *
+ *	end
+ *		•  If this call truncated the resulting string.
+ *		•  If `dst == end` (a previous chained call to these
+ *		   functions truncated).
+ *	NULL
+ *		•  If this function failed (see ERRORS).
+ *		•  If `dst == NULL` (a previous chained call to these
+ *		   functions failed).
+ *
+ * ERRORS
+ *	These functions may fail for the same reasons as vsnprintf(3).
+ */
+
+
+inline char *
+stpeprintf(char *dst, char *end, const char *restrict fmt, ...)
+{
+	char     *p;
+	va_list  ap;
+
+	va_start(ap, fmt);
+	p = vstpeprintf(dst, end, fmt, ap);
+	va_end(ap);
+
+	return p;
+}
+
+
+inline char *
+vstpeprintf(char *dst, char *end, const char *restrict fmt, va_list ap)
+{
+	int        len;
+	ptrdiff_t  size;
+
+	if (dst == end)
+		return end;
+	if (dst == NULL)
+		return NULL;
+
+	size = end - dst;
+	len = vsnprintf(dst, size, fmt, ap);
+
+	if (len == -1)
+		return NULL;
+	if (len >= size)
+		return end;
+
+	return dst + len;
+}
+
+
+#endif  // !HAVE_STPEPRINTF
+#endif  // include guard
diff --git a/lib/string/strftime.c b/lib/string/strftime.c
new file mode 100644
index 0000000..ea1deb3
--- /dev/null
+++ b/lib/string/strftime.c
@@ -0,0 +1,7 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "strftime.h"
diff --git a/lib/string/strftime.h b/lib/string/strftime.h
new file mode 100644
index 0000000..bebb31a
--- /dev/null
+++ b/lib/string/strftime.h
@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_STRFTIME_H_
+#define SHADOW_INCLUDE_LIB_STRFTIME_H_
+
+
+#include <config.h>
+
+#include <time.h>
+
+#include "sizeof.h"
+
+
+#define STRFTIME(dst, fmt, ...)  strftime(dst, NITEMS(dst), fmt, __VA_ARGS__)
+
+
+#endif  // include guard
diff --git a/lib/string/strncpy.h b/lib/string/strncpy.h
new file mode 100644
index 0000000..fc6fcc9
--- /dev/null
+++ b/lib/string/strncpy.h
@@ -0,0 +1,21 @@
+/*
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_STRNCPY_H_
+#define SHADOW_INCLUDE_LIB_STRNCPY_H_
+
+
+#include <config.h>
+
+#include <string.h>
+
+#include "sizeof.h"
+
+
+#define STRNCPY(dst, src)  strncpy(dst, src, NITEMS(dst))
+
+
+#endif  // include guard
diff --git a/lib/string/strtcpy.c b/lib/string/strtcpy.c
new file mode 100644
index 0000000..74de4fc
--- /dev/null
+++ b/lib/string/strtcpy.c
@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#include <stddef.h>
+#include <sys/types.h>
+
+#ident "$Id$"
+
+#include "string/strtcpy.h"
+
+
+extern inline ssize_t strtcpy(char *restrict dst, const char *restrict src,
+    size_t dsize);
diff --git a/lib/string/strtcpy.h b/lib/string/strtcpy.h
new file mode 100644
index 0000000..4ff6e11
--- /dev/null
+++ b/lib/string/strtcpy.h
@@ -0,0 +1,80 @@
+/*
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#ifndef SHADOW_INCLUDE_LIB_STRTCPY_H_
+#define SHADOW_INCLUDE_LIB_STRTCPY_H_
+
+
+#include <config.h>
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "attr.h"
+#include "defines.h"
+#include "sizeof.h"
+
+
+/*
+ * SYNOPSIS
+ *	[[gnu::null_terminated_string_arg(2)]]
+ *	int STRTCPY(char dst[restrict], const char *restrict src);
+ *
+ * ARGUMENTS
+ *	dst	Destination buffer where to copy a string.
+ *	src	Source string to be copied into dst.
+ *
+ * DESCRIPTION
+ *	This macro copies the string pointed to by src, into a string
+ *	at the buffer pointed to by dst.  If the destination buffer,
+ *	isn't large enough to hold the copy, the resulting string is
+ *	truncated.  The size of the buffer is calculated internally via
+ *	NITEMS().
+ *
+ * RETURN VALUE
+ *	-1	If this call truncated the resulting string.
+ *
+ *	strlen(dst)
+ *		On success.
+ *
+ * ERRORS
+ *	This function doesn't set errno.
+ */
+
+
+#define STRTCPY(dst, src)  strtcpy(dst, src, NITEMS(dst))
+
+
+ATTR_STRING(2)
+inline ssize_t strtcpy(char *restrict dst, const char *restrict src,
+    size_t dsize);
+
+
+inline ssize_t
+strtcpy(char *restrict dst, const char *restrict src, size_t dsize)
+{
+	bool    trunc;
+	size_t  dlen, slen;
+
+	if (dsize == 0)
+		return -1;
+
+	slen = strnlen(src, dsize);
+	trunc = (slen == dsize);
+	dlen = slen - trunc;
+
+	stpcpy(mempcpy(dst, src, dlen), "");
+
+	if (trunc)
+		return -1;
+
+	return slen;
+}
+
+
+#endif  // include guard
diff --git a/lib/string/zustr2stp.h b/lib/string/zustr2stp.h
new file mode 100644
index 0000000..152102b
--- /dev/null
+++ b/lib/string/zustr2stp.h
@@ -0,0 +1,58 @@
+// SPDX-FileCopyrightText: 2022-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_STRING_ZUSTR2STP_H_
+#define SHADOW_INCLUDE_LIB_STRING_ZUSTR2STP_H_
+
+
+#include <config.h>
+
+#include <assert.h>
+#include <string.h>
+
+#include "must_be.h"
+#include "sizeof.h"
+
+
+/*
+ * SYNOPSIS
+ *	char *ZUSTR2STP(char *restrict dst, const char src[restrict]);
+ *
+ * ARGUMENTS
+ *	dst	Destination buffer.
+ *	src	Source null-padded character sequence.
+ *
+ * DESCRIPTION
+ *	This macro copies at most NITEMS(src) non-null bytes from the
+ *	array pointed to by src, followed by a null character, to the
+ *	buffer pointed to by dst.
+ *
+ * RETURN VALUE
+ *	dst + strlen(dst)
+ *		This function returns a pointer to the terminating NUL
+ *		byte.
+ *
+ * CAVEATS
+ *	This function doesn't know the size of the destination buffer.
+ *	It assumes it will always be large enough.  Since the size of
+ *	the source buffer is known to the caller, it should make sure to
+ *	allocate a destination buffer of at least `NITEMS(src) + 1`.
+ *
+ * EXAMPLES
+ *	char  hostname[NITEMS(utmp->ut_host) + 1];
+ *
+ *	len = ZUSTR2STP(hostname, utmp->ut_host) - hostname;
+ *	puts(hostname);
+ */
+
+
+#define ZUSTR2STP(dst, src)                                                   \
+({                                                                            \
+	static_assert(!is_array(dst) || sizeof(dst) > SIZEOF_ARRAY(src), ""); \
+                                                                              \
+	stpcpy(mempcpy(dst, src, strnlen(src, NITEMS(src))), "");             \
+})
+
+
+#endif  // include guard
diff --git a/lib/strtoday.c b/lib/strtoday.c
new file mode 100644
index 0000000..dabd5b5
--- /dev/null
+++ b/lib/strtoday.c
@@ -0,0 +1,77 @@
+/*
+ * SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008       , Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#include <ctype.h>
+
+#ident "$Id$"
+
+#include "atoi/str2i.h"
+#include "prototypes.h"
+#include "getdate.h"
+
+
+/*
+ * strtoday() now uses get_date() (borrowed from GNU shellutils)
+ * which can handle many date formats, for example:
+ *	1970-09-17	# ISO 8601.
+ *	70-9-17		# This century assumed by default.
+ *	70-09-17	# Leading zeros are ignored.
+ *	9/17/72		# Common U.S. writing.
+ *	24 September 1972
+ *	24 Sept 72	# September has a special abbreviation.
+ *	24 Sep 72	# Three-letter abbreviations always allowed.
+ *	Sep 24, 1972
+ *	24-sep-72
+ *	24sep72
+ */
+long strtoday (const char *str)
+{
+	time_t t;
+	bool isnum = true;
+	const char *s = str;
+
+	/*
+	 * get_date() interprets an empty string as the current date,
+	 * which is not what we expect, unless you're a BOFH :-).
+	 * (useradd sets sp_expire = current date for new lusers)
+	 */
+	if ((NULL == str) || ('\0' == *str)) {
+		return -1;
+	}
+
+	/* If a numerical value is provided, this is already a number of
+	 * days since EPOCH.
+	 */
+	if ('-' == *s) {
+		s++;
+	}
+	while (' ' == *s) {
+		s++;
+	}
+	while (isnum && ('\0' != *s)) {
+		if (!isdigit (*s)) {
+			isnum = false;
+		}
+		s++;
+	}
+	if (isnum) {
+		long retdate;
+		if (str2sl(&retdate, str) == -1)
+			return -2;
+		return retdate;
+	}
+
+	t = get_date(str, NULL);
+	if ((time_t) - 1 == t) {
+		return -2;
+	}
+	return t / DAY;
+}
diff --git a/libmisc/sub.c b/lib/sub.c
index d30c4c7..d8e2447 100644
--- a/libmisc/sub.c
+++ b/lib/sub.c
@@ -15,8 +15,10 @@
 #include <sys/types.h>
 #include "prototypes.h"
 #include "defines.h"
+#define	MAX_SUBROOT2	"maximum subsystem depth reached\n"
 #define	BAD_SUBROOT2	"invalid root `%s' for user `%s'\n"
 #define	NO_SUBROOT2	"no subsystem root `%s' for user `%s'\n"
+#define	MAX_DEPTH	1024
 /*
  * subsystem - change to subsystem root
  *
@@ -27,6 +29,18 @@
  */
 void subsystem (const struct passwd *pw)
 {
+	static int depth = 0;
+
+	/*
+	 * Prevent endless loop on misconfigured systems.
+	 */
+	if (++depth > MAX_DEPTH) {
+		printf (_("Maximum subsystem depth reached\n"));
+		SYSLOG ((LOG_WARN, MAX_SUBROOT2));
+		closelog ();
+		exit (EXIT_FAILURE);
+	}
+
 	/*
 	 * The new root directory must begin with a "/" character.
 	 */
@@ -43,8 +57,8 @@ void subsystem (const struct passwd *pw)
 	 * must be able to change into it.
 	 */
 
-	if (   (chdir (pw->pw_dir) != 0)
-	    || (chroot (pw->pw_dir) != 0)) {
+	if (   (chroot (pw->pw_dir) != 0)
+	    || (chdir ("/") != 0)) {
 		(void) printf (_("Can't change root directory to '%s'\n"),
 		               pw->pw_dir);
 		SYSLOG ((LOG_WARN, NO_SUBROOT2, pw->pw_dir, pw->pw_name));
diff --git a/lib/subordinateio.c b/lib/subordinateio.c
index bd1af26..e7cd4b4 100644
--- a/lib/subordinateio.c
+++ b/lib/subordinateio.c
@@ -16,6 +16,12 @@
 #include <pwd.h>
 #include <ctype.h>
 #include <fcntl.h>
+#include <string.h>
+
+#include "alloc.h"
+#include "atoi/str2i.h"
+#include "string/sprintf.h"
+
 
 #define ID_SIZE 31
 
@@ -32,7 +38,7 @@ static /*@null@*/ /*@only@*/void *subordinate_dup (const void *ent)
 	const struct subordinate_range *rangeent = ent;
 	struct subordinate_range *range;
 
-	range = (struct subordinate_range *) malloc (sizeof *range);
+	range = MALLOC(1, struct subordinate_range);
 	if (NULL == range) {
 		return NULL;
 	}
@@ -52,7 +58,8 @@ static /*@null@*/ /*@only@*/void *subordinate_dup (const void *ent)
  *
  * @ent: pointer to a subordinate_range struct to free.
  */
-static void subordinate_free (/*@out@*/ /*@only@*/void *ent)
+static void
+subordinate_free(/*@only@*/void *ent)
 {
 	struct subordinate_range *rangeent = ent;
 
@@ -69,7 +76,8 @@ static void subordinate_free (/*@out@*/ /*@only@*/void *ent)
  * in @line, or NULL on failure.  Note that the returned value should not
  * be freed by the caller.
  */
-static void *subordinate_parse (const char *line)
+static void *
+subordinate_parse(const char *line)
 {
 	static struct subordinate_range range;
 	static char rangebuf[1024];
@@ -90,19 +98,8 @@ static void *subordinate_parse (const char *line)
 	 * field.  The fields are converted into NUL terminated strings.
 	 */
 
-	for (cp = rangebuf, i = 0; (i < SUBID_NFIELDS) && (NULL != cp); i++) {
-		fields[i] = cp;
-		while (('\0' != *cp) && (':' != *cp)) {
-			cp++;
-		}
-
-		if ('\0' != *cp) {
-			*cp = '\0';
-			cp++;
-		} else {
-			cp = NULL;
-		}
-	}
+	for (cp = rangebuf, i = 0; (i < SUBID_NFIELDS) && (NULL != cp); i++)
+		fields[i] = strsep(&cp, ":");
 
 	/*
 	 * There must be exactly SUBID_NFIELDS colon separated fields or
@@ -111,9 +108,9 @@ static void *subordinate_parse (const char *line)
 	if (i != SUBID_NFIELDS || *fields[0] == '\0' || *fields[1] == '\0' || *fields[2] == '\0')
 		return NULL;
 	range.owner = fields[0];
-	if (getulong (fields[1], &range.start) == 0)
+	if (str2ul(&range.start, fields[1]) == -1)
 		return NULL;
-	if (getulong (fields[2], &range.count) == 0)
+	if (str2ul(&range.count, fields[2]) == -1)
 		return NULL;
 
 	return &range;
@@ -208,7 +205,7 @@ static const struct subordinate_range *find_range(struct commonio_db *db,
         /*
          * We only do special handling for these two files
          */
-        if ((0 != strcmp(db->filename, "/etc/subuid")) && (0 != strcmp(db->filename, "/etc/subgid")))
+        if ((0 != strcmp(db->filename, SUBUID_FILE)) && (0 != strcmp(db->filename, SUBGID_FILE)))
                 return NULL;
 
         /*
@@ -218,9 +215,9 @@ static const struct subordinate_range *find_range(struct commonio_db *db,
          * (It may be specified as literal UID or as another username which
          * has the same UID as the username we are looking for.)
          */
-        struct passwd *pwd;
+        char           owner_uid_string[33];
         uid_t          owner_uid;
-        char           owner_uid_string[33] = "";
+        struct passwd  *pwd;
 
 
         /* Get UID of the username we are looking for */
@@ -230,7 +227,8 @@ static const struct subordinate_range *find_range(struct commonio_db *db,
                 return NULL;
         }
         owner_uid = pwd->pw_uid;
-        sprintf(owner_uid_string, "%lu", (unsigned long int)owner_uid);
+        if (SNPRINTF(owner_uid_string, "%lu", (unsigned long) owner_uid) == -1)
+                return NULL;
 
         commonio_rewind(db);
         while ((range = commonio_next(db)) != NULL) {
@@ -313,19 +311,16 @@ static bool have_range(struct commonio_db *db,
 
 static bool append_range(struct subid_range **ranges, const struct subordinate_range *new, int n)
 {
-	if (!*ranges) {
-		*ranges = malloc(sizeof(struct subid_range));
-		if (!*ranges)
-			return false;
-	} else {
-		struct subid_range *alloced;
-		alloced = realloc(*ranges, (n + 1) * (sizeof(struct subid_range)));
-		if (!alloced)
-			return false;
-		*ranges = alloced;
-	}
-	(*ranges)[n].start = new->start;
-	(*ranges)[n].count = new->count;
+	struct subid_range  *sr;
+
+	sr = REALLOC(*ranges, n + 1, struct subid_range);
+	if (!sr)
+		return false;
+
+	sr[n].start = new->start;
+	sr[n].count = new->count;
+	*ranges = sr;
+
 	return true;
 }
 
@@ -353,15 +348,19 @@ void free_subordinate_ranges(struct subordinate_range **ranges, int count)
  */
 static int subordinate_range_cmp (const void *p1, const void *p2)
 {
-	struct subordinate_range *range1, *range2;
+	const struct commonio_entry *const *ce1;
+	const struct commonio_entry *const *ce2;
+	const struct subordinate_range *range1, *range2;
 
-	if ((*(struct commonio_entry **) p1)->eptr == NULL)
+	ce1 = p1;
+	range1 = (*ce1)->eptr;
+	if (range1 == NULL)
 		return 1;
-	if ((*(struct commonio_entry **) p2)->eptr == NULL)
-		return -1;
 
-	range1 = ((struct subordinate_range *) (*(struct commonio_entry **) p1)->eptr);
-	range2 = ((struct subordinate_range *) (*(struct commonio_entry **) p2)->eptr);
+	ce2 = p2;
+	range2 = (*ce2)->eptr;
+	if (range2 == NULL)
+		return -1;
 
 	if (range1->start < range2->start)
 		return -1;
@@ -556,7 +555,7 @@ static int remove_range (struct commonio_db *db,
 }
 
 static struct commonio_db subordinate_uid_db = {
-	"/etc/subuid",		/* filename */
+	SUBUID_FILE,		/* filename */
 	&subordinate_ops,	/* ops */
 	NULL,			/* fp */
 #ifdef WITH_SELINUX
@@ -620,17 +619,28 @@ bool have_sub_uids(const char *owner, uid_t start, unsigned long count)
 	return have_range (&subordinate_uid_db, owner, start, count);
 }
 
+/*
+ * sub_uid_add: add a subuid range, perhaps through nss.
+ *
+ * Return 1 if the range is already present or on success.  On error
+ * return 0 and set errno appropriately.
+ */
 int sub_uid_add (const char *owner, uid_t start, unsigned long count)
 {
-	if (get_subid_nss_handle())
-		return -EOPNOTSUPP;
+	if (get_subid_nss_handle()) {
+		errno = EOPNOTSUPP;
+		return 0;
+	}
 	return add_range (&subordinate_uid_db, owner, start, count);
 }
 
+/* Return 1 on success.  on failure, return 0 and set errno appropriately */
 int sub_uid_remove (const char *owner, uid_t start, unsigned long count)
 {
-	if (get_subid_nss_handle())
-		return -EOPNOTSUPP;
+	if (get_subid_nss_handle()) {
+		errno = EOPNOTSUPP;
+		return 0;
+	}
 	return remove_range (&subordinate_uid_db, owner, start, count);
 }
 
@@ -652,7 +662,7 @@ uid_t sub_uid_find_free_range(uid_t min, uid_t max, unsigned long count)
 }
 
 static struct commonio_db subordinate_gid_db = {
-	"/etc/subgid",		/* filename */
+	SUBGID_FILE,		/* filename */
 	&subordinate_ops,	/* ops */
 	NULL,			/* fp */
 #ifdef WITH_SELINUX
@@ -716,17 +726,28 @@ bool local_sub_gid_assigned(const char *owner)
 	return range_exists (&subordinate_gid_db, owner);
 }
 
+/*
+ * sub_gid_add: add a subgid range, perhaps through nss.
+ *
+ * Return 1 if the range is already present or on success.  On error
+ * return 0 and set errno appropriately.
+ */
 int sub_gid_add (const char *owner, gid_t start, unsigned long count)
 {
-	if (get_subid_nss_handle())
-		return -EOPNOTSUPP;
+	if (get_subid_nss_handle()) {
+		errno = EOPNOTSUPP;
+		return 0;
+	}
 	return add_range (&subordinate_gid_db, owner, start, count);
 }
 
+/* Return 1 on success.  on failure, return 0 and set errno appropriately */
 int sub_gid_remove (const char *owner, gid_t start, unsigned long count)
 {
-	if (get_subid_nss_handle())
-		return -EOPNOTSUPP;
+	if (get_subid_nss_handle()) {
+		errno = EOPNOTSUPP;
+		return 0;
+	}
 	return remove_range (&subordinate_gid_db, owner, start, count);
 }
 
@@ -910,7 +931,7 @@ static int append_uids(uid_t **uids, const char *owner, int n)
 			return n;
 	}
 
-	ret = realloc(*uids, (n + 1) * sizeof(uid_t));
+	ret = REALLOC(*uids, n + 1, uid_t);
 	if (!ret) {
 		free(*uids);
 		return -1;
@@ -985,7 +1006,7 @@ bool new_subid_range(struct subordinate_range *range, enum subid_type id_type, b
 	switch (id_type) {
 	case ID_TYPE_UID:
 		if (!sub_uid_lock()) {
-			printf("Failed loging subuids (errno %d)\n", errno);
+			printf("Failed locking subuids (errno %d)\n", errno);
 			return false;
 		}
 		if (!sub_uid_open(O_CREAT | O_RDWR)) {
@@ -997,7 +1018,7 @@ bool new_subid_range(struct subordinate_range *range, enum subid_type id_type, b
 		break;
 	case ID_TYPE_GID:
 		if (!sub_gid_lock()) {
-			printf("Failed loging subgids (errno %d)\n", errno);
+			printf("Failed locking subgids (errno %d)\n", errno);
 			return false;
 		}
 		if (!sub_gid_open(O_CREAT | O_RDWR)) {
@@ -1057,7 +1078,7 @@ bool release_subid_range(struct subordinate_range *range, enum subid_type id_typ
 	switch (id_type) {
 	case ID_TYPE_UID:
 		if (!sub_uid_lock()) {
-			printf("Failed loging subuids (errno %d)\n", errno);
+			printf("Failed locking subuids (errno %d)\n", errno);
 			return false;
 		}
 		if (!sub_uid_open(O_CREAT | O_RDWR)) {
@@ -1069,7 +1090,7 @@ bool release_subid_range(struct subordinate_range *range, enum subid_type id_typ
 		break;
 	case ID_TYPE_GID:
 		if (!sub_gid_lock()) {
-			printf("Failed loging subgids (errno %d)\n", errno);
+			printf("Failed locking subgids (errno %d)\n", errno);
 			return false;
 		}
 		if (!sub_gid_open(O_CREAT | O_RDWR)) {
@@ -1097,6 +1118,6 @@ bool release_subid_range(struct subordinate_range *range, enum subid_type id_typ
 }
 
 #else				/* !ENABLE_SUBIDS */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !ENABLE_SUBIDS */
 
diff --git a/libmisc/sulog.c b/lib/sulog.c
index 3e95613..2ef22b2 100644
--- a/libmisc/sulog.c
+++ b/lib/sulog.c
@@ -64,7 +64,7 @@ void sulog (const char *tty, bool success, const char *oldname, const char *name
 		/* Do not return if the group permission were raised. */
 		exit (EXIT_FAILURE);
 	}
-	if (fp == (FILE *) 0) {
+	if (fp == NULL) {
 		return;		/* can't open or create logfile */
 	}
 
diff --git a/lib/tcbfuncs.c b/lib/tcbfuncs.c
index 1ed5d03..b5915fc 100644
--- a/lib/tcbfuncs.c
+++ b/lib/tcbfuncs.c
@@ -141,7 +141,7 @@ static /*@null@*/ char *shadowtcb_path_rel_existing (const char *name)
 		         shadow_progname, link);
 		return NULL;
 	}
-	link[(size_t)ret] = '\0';
+	link[ret] = '\0';
 	rval = strdup (link);
 	if (NULL == rval) {
 		OUT_OF_MEMORY;
@@ -527,7 +527,7 @@ shadowtcb_status shadowtcb_create (const char *name, uid_t uid)
 	struct stat tcbdir_stat;
 	gid_t shadowgid, authgid;
 	struct group *gr;
-	int fd;
+	int fd = -1;
 	shadowtcb_status ret = SHADOWTCB_FAILURE;
 
 	if (!getdef_bool ("USE_TCB")) {
@@ -566,14 +566,13 @@ shadowtcb_status shadowtcb_create (const char *name, uid_t uid)
 		         shadow_progname, shadow, strerror (errno));
 		goto out_free;
 	}
-	close (fd);
-	if (chown (shadow, 0, authgid) != 0) {
+	if (fchown (fd, 0, authgid) != 0) {
 		fprintf (shadow_logfd,
 		         _("%s: Cannot change owner of %s: %s\n"),
 		         shadow_progname, shadow, strerror (errno));
 		goto out_free;
 	}
-	if (chmod (shadow, (mode_t) ((authgid == shadowgid) ? 0600 : 0640)) != 0) {
+	if (fchmod (fd, (mode_t) ((authgid == shadowgid) ? 0600 : 0640)) != 0) {
 		fprintf (shadow_logfd,
 		         _("%s: Cannot change mode of %s: %s\n"),
 		         shadow_progname, shadow, strerror (errno));
@@ -597,6 +596,8 @@ shadowtcb_status shadowtcb_create (const char *name, uid_t uid)
 	}
 	ret = SHADOWTCB_SUCCESS;
 out_free:
+	if (fd != -1)
+		close(fd);
 	free (dir);
 	free (shadow);
 	return ret;
diff --git a/lib/time/day_to_str.c b/lib/time/day_to_str.c
new file mode 100644
index 0000000..e3e4221
--- /dev/null
+++ b/lib/time/day_to_str.c
@@ -0,0 +1,11 @@
+// SPDX-FileCopyrightText: 2021-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2024, Tobias Stoeckmann <tobias@stoeckmann.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "time/day_to_str.h"
+
+
+extern inline void day_to_str(size_t size, char buf[size], long day);
diff --git a/lib/time/day_to_str.h b/lib/time/day_to_str.h
new file mode 100644
index 0000000..96cec6e
--- /dev/null
+++ b/lib/time/day_to_str.h
@@ -0,0 +1,51 @@
+// SPDX-FileCopyrightText: 2021-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2024, Tobias Stoeckmann <tobias@stoeckmann.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_TIME_DAY_TO_STR_H_
+#define SHADOW_INCLUDE_LIB_TIME_DAY_TO_STR_H_
+
+
+#include <config.h>
+
+#include <time.h>
+
+#include "defines.h"
+#include "sizeof.h"
+#include "string/strtcpy.h"
+
+
+#define DAY_TO_STR(str, day)   day_to_str(NITEMS(str), str, day)
+
+
+inline void day_to_str(size_t size, char buf[size], long day);
+
+
+inline void
+day_to_str(size_t size, char buf[size], long day)
+{
+	time_t     date;
+	struct tm  tm;
+
+	if (day < 0) {
+		strtcpy(buf, "never", size);
+		return;
+	}
+
+	if (__builtin_mul_overflow(day, DAY, &date)) {
+		strtcpy(buf, "future", size);
+		return;
+	}
+
+	if (gmtime_r(&date, &tm) == NULL) {
+		strtcpy(buf, "future", size);
+		return;
+	}
+
+	if (strftime(buf, size, "%Y-%m-%d", &tm) == 0)
+		strtcpy(buf, "future", size);
+}
+
+
+#endif  // include guard
diff --git a/libmisc/ttytype.c b/lib/ttytype.c
index f72d957..a9fb0e8 100644
--- a/libmisc/ttytype.c
+++ b/lib/ttytype.c
@@ -34,16 +34,14 @@ void ttytype (const char *line)
 	if (NULL == typefile) {
 		return;
 	}
-	if (access (typefile, F_OK) != 0) {
-		return;
-	}
 
 	fp = fopen (typefile, "r");
 	if (NULL == fp) {
-		perror (typefile);
+		if (errno != ENOENT)
+			perror (typefile);
 		return;
 	}
-	while (fgets (buf, (int) sizeof buf, fp) == buf) {
+	while (fgets (buf, sizeof buf, fp) == buf) {
 		if (buf[0] == '#') {
 			continue;
 		}
diff --git a/libmisc/tz.c b/lib/tz.c
index 16d92ad..83b295c 100644
--- a/libmisc/tz.c
+++ b/lib/tz.c
@@ -34,7 +34,7 @@
 
 	fp = fopen (fname, "r");
 	if (   (NULL == fp)
-	    || (fgets (tzbuf, (int) sizeof (tzbuf), fp) == NULL)) {
+	    || (fgets (tzbuf, sizeof (tzbuf), fp) == NULL)) {
 		def_tz = getdef_str ("ENV_TZ");
 		if ((NULL == def_tz) || ('/' == def_tz[0])) {
 			def_tz = "TZ=CST6CDT";
@@ -42,7 +42,8 @@
 
 		strcpy (tzbuf, def_tz);
 	} else {
-		tzbuf[strlen (tzbuf) - 1] = '\0';
+		/* Remove optional trailing '\n'. */
+		tzbuf[strcspn (tzbuf, "\n")] = '\0';
 	}
 
 	if (NULL != fp) {
@@ -52,6 +53,6 @@
 	return tzbuf;
 }
 #else				/* !USE_PAM */
-extern int errno;		/* warning: ANSI C forbids an empty source file */
+extern int ISO_C_forbids_an_empty_translation_unit;
 #endif				/* !USE_PAM */
 
diff --git a/libmisc/ulimit.c b/lib/ulimit.c
index e331d46..45a184a 100644
--- a/libmisc/ulimit.c
+++ b/lib/ulimit.c
@@ -11,36 +11,18 @@
 
 #ident "$Id$"
 
-#if HAVE_ULIMIT_H
-#include <ulimit.h>
-#ifndef UL_SETFSIZE
-#ifdef UL_SFILLIM
-#define UL_SETFSIZE UL_SFILLIM
-#else
-#define UL_SETFSIZE 2
-#endif
-#endif
-#elif HAVE_SYS_RESOURCE_H
-#include <sys/time.h>		/* for struct timeval on sunos4 */
-/* XXX - is the above ok or should it be <time.h> on ultrix? */
+#include <sys/time.h>
 #include <sys/resource.h>
-#endif
 #include "prototypes.h"
 
 int set_filesize_limit (int blocks)
 {
 	int ret = -1;
-#if HAVE_ULIMIT_H
-	if (ulimit (UL_SETFSIZE, blocks) != -1) {
-		ret = 0;
-	}
-#elif defined(RLIMIT_FSIZE)
 	struct rlimit rlimit_fsize;
 
 	rlimit_fsize.rlim_cur = 512L * blocks;
 	rlimit_fsize.rlim_max = rlimit_fsize.rlim_cur;
 	ret = setrlimit (RLIMIT_FSIZE, &rlimit_fsize);
-#endif
 
 	return ret;
 }
diff --git a/libmisc/user_busy.c b/lib/user_busy.c
index c03feb2..a622376 100644
--- a/libmisc/user_busy.c
+++ b/lib/user_busy.c
@@ -23,6 +23,8 @@
 #include "subordinateio.h"
 #endif				/* ENABLE_SUBIDS */
 #include "shadowlog.h"
+#include "string/sprintf.h"
+
 
 #ifdef __linux__
 static int check_status (const char *name, const char *sname, uid_t uid);
@@ -32,7 +34,7 @@ static int user_busy_utmp (const char *name);
 #endif				/* !__linux__ */
 
 /*
- * user_busy - check if an user if currently running processes
+ * user_busy - check if a user is currently running processes
  */
 int user_busy (const char *name, uid_t uid)
 {
@@ -43,26 +45,21 @@ int user_busy (const char *name, uid_t uid)
 	/* On Linux, directly parse /proc */
 	return user_busy_processes (name, uid);
 #else				/* !__linux__ */
-	/* If we cannot rely on /proc, check is there is a record in utmp
+	/* If we cannot rely on /proc, check if there is a record in utmp
 	 * indicating that the user is still logged in */
 	return user_busy_utmp (name);
 #endif				/* !__linux__ */
 }
 
+
 #ifndef __linux__
-static int user_busy_utmp (const char *name)
+static int
+user_busy_utmp(const char *name)
 {
-#ifdef USE_UTMPX
-	struct utmpx *utent;
+	struct utmpx  *utent;
 
-	setutxent ();
-	while ((utent = getutxent ()) != NULL)
-#else				/* !USE_UTMPX */
-	struct utmp *utent;
-
-	setutent ();
-	while ((utent = getutent ()) != NULL)
-#endif				/* !USE_UTMPX */
+	setutxent();
+	while ((utent = getutxent()) != NULL)
 	{
 		if (utent->ut_type != USER_PROCESS) {
 			continue;
@@ -84,17 +81,18 @@ static int user_busy_utmp (const char *name)
 }
 #endif				/* !__linux__ */
 
+
 #ifdef __linux__
 #ifdef ENABLE_SUBIDS
 #define in_parentuid_range(uid) ((uid) >= parentuid && (uid) < parentuid + range)
 static int different_namespace (const char *sname)
 {
 	/* 41: /proc/xxxxxxxxxx/task/xxxxxxxxxx/ns/user + \0 */
-	char path[41];
-	char buf[512], buf2[512];
-	ssize_t llen1, llen2;
+	char     path[41];
+	char     buf[512], buf2[512];
+	ssize_t  llen1, llen2;
 
-	snprintf (path, 41, "/proc/%s/ns/user", sname);
+	SNPRINTF(path, "/proc/%s/ns/user", sname);
 
 	if ((llen1 = readlink (path, buf, sizeof(buf))) == -1)
 		return 0;
@@ -113,11 +111,11 @@ static int different_namespace (const char *sname)
 static int check_status (const char *name, const char *sname, uid_t uid)
 {
 	/* 40: /proc/xxxxxxxxxx/task/xxxxxxxxxx/status + \0 */
-	char status[40];
-	char line[1024];
-	FILE *sfile;
+	char  status[40];
+	char  line[1024];
+	FILE  *sfile;
 
-	snprintf (status, 40, "/proc/%s/status", sname);
+	SNPRINTF(status, "/proc/%s/status", sname);
 
 	sfile = fopen (status, "r");
 	if (NULL == sfile) {
@@ -158,16 +156,16 @@ static int check_status (const char *name, const char *sname, uid_t uid)
 
 static int user_busy_processes (const char *name, uid_t uid)
 {
-	DIR *proc;
-	struct dirent *ent;
-	char *tmp_d_name;
-	pid_t pid;
-	DIR *task_dir;
+	DIR            *proc;
+	DIR            *task_dir;
+	char           *tmp_d_name;
 	/* 22: /proc/xxxxxxxxxx/task + \0 */
-	char task_path[22];
-	char root_path[22];
-	struct stat sbroot;
-	struct stat sbroot_process;
+	char           task_path[22];
+	char           root_path[22];
+	pid_t          pid;
+	struct stat    sbroot;
+	struct stat    sbroot_process;
+	struct dirent  *ent;
 
 #ifdef ENABLE_SUBIDS
 	sub_uid_open (O_RDONLY);
@@ -207,13 +205,12 @@ static int user_busy_processes (const char *name, uid_t uid)
 		}
 
 		/* Check if this is a valid PID */
-		if (get_pid (tmp_d_name, &pid) == 0) {
+		if (get_pid(tmp_d_name, &pid) == -1) {
 			continue;
 		}
 
 		/* Check if the process is in our chroot */
-		snprintf (root_path, 22, "/proc/%lu/root", (unsigned long) pid);
-		root_path[21] = '\0';
+		SNPRINTF(root_path, "/proc/%lu/root", (unsigned long) pid);
 		if (stat (root_path, &sbroot_process) != 0) {
 			continue;
 		}
@@ -233,13 +230,12 @@ static int user_busy_processes (const char *name, uid_t uid)
 			return 1;
 		}
 
-		snprintf (task_path, 22, "/proc/%lu/task", (unsigned long) pid);
-		task_path[21] = '\0';
+		SNPRINTF(task_path, "/proc/%lu/task", (unsigned long) pid);
 		task_dir = opendir (task_path);
 		if (task_dir != NULL) {
 			while ((ent = readdir (task_dir)) != NULL) {
 				pid_t tid;
-				if (get_pid (ent->d_name, &tid) == 0) {
+				if (get_pid(ent->d_name, &tid) == -1) {
 					continue;
 				}
 				if (tid == pid) {
diff --git a/lib/utent.c b/lib/utent.c
deleted file mode 100644
index d5e6dae..0000000
--- a/lib/utent.c
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1993 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ifndef	HAVE_GETUTENT
-
-#include "defines.h"
-#include <stdio.h>
-#include <fcntl.h>
-#include <utmp.h>
-
-#ifndef	lint
-static char rcsid[] = "$Id$";
-#endif
-
-static int utmp_fd = -1;
-static struct utmp utmp_buf;
-
-/*
- * setutent - open or rewind the utmp file
- */
-
-void setutent (void)
-{
-	if (utmp_fd == -1)
-		if ((utmp_fd = open (_UTMP_FILE, O_RDWR)) == -1)
-			utmp_fd = open (_UTMP_FILE, O_RDONLY);
-
-	if (utmp_fd != -1)
-		lseek (utmp_fd, (off_t) 0L, SEEK_SET);
-}
-
-/*
- * endutent - close the utmp file
- */
-
-void endutent (void)
-{
-	if (utmp_fd != -1)
-		close (utmp_fd);
-
-	utmp_fd = -1;
-}
-
-/*
- * getutent - get the next record from the utmp file
- */
-
-struct utmp *getutent (void)
-{
-	if (utmp_fd == -1)
-		setutent ();
-
-	if (utmp_fd == -1)
-		return 0;
-
-	if (read (utmp_fd, &utmp_buf, sizeof utmp_buf) != sizeof utmp_buf)
-		return 0;
-
-	return &utmp_buf;
-}
-#else
-extern int errno;		/* warning: ANSI C forbids an empty source file */
-#endif
diff --git a/lib/utmp.c b/lib/utmp.c
new file mode 100644
index 0000000..08e9b62
--- /dev/null
+++ b/lib/utmp.c
@@ -0,0 +1,434 @@
+/*
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#include "defines.h"
+#include "prototypes.h"
+#include "getdef.h"
+
+#include <utmpx.h>
+#include <assert.h>
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <fcntl.h>
+
+#include "alloc.h"
+#include "sizeof.h"
+#include "string/strncpy.h"
+#include "string/strtcpy.h"
+#include "string/zustr2stp.h"
+
+#ident "$Id$"
+
+
+#define UTX_LINESIZE  NITEMS(memberof(struct utmpx, ut_line))
+
+
+/*
+ * is_my_tty -- determine if "tty" is the same TTY stdin is using
+ */
+static bool
+is_my_tty(const char tty[UTX_LINESIZE])
+{
+	char         full_tty[STRLEN("/dev/") + UTX_LINESIZE + 1];
+	/* tmptty shall be bigger than full_tty */
+	static char  tmptty[sizeof(full_tty) + 1];
+
+	full_tty[0] = '\0';
+	if (tty[0] != '/')
+		strcpy (full_tty, "/dev/");
+	strncat(full_tty, tty, UTX_LINESIZE);
+
+	if ('\0' == tmptty[0]) {
+		const char *tname = ttyname (STDIN_FILENO);
+		if (NULL != tname)
+			STRTCPY(tmptty, tname);
+	}
+
+	if ('\0' == tmptty[0]) {
+		(void) puts (_("Unable to determine your tty name."));
+		exit (EXIT_FAILURE);
+	}
+
+	return strcmp (full_tty, tmptty) == 0;
+}
+
+
+/*
+ * failtmp - update the cumulative failure log
+ *
+ *	failtmp updates the (struct utmpx) formatted failure log which
+ *	maintains a record of all login failures.
+ */
+static void
+failtmp(const char *username, const struct utmpx *failent)
+{
+	const char *ftmp;
+	int fd;
+
+	/*
+	 * Get the name of the failure file.  If no file has been defined
+	 * in login.defs, don't do this.
+	 */
+
+	ftmp = getdef_str ("FTMP_FILE");
+	if (NULL == ftmp) {
+		return;
+	}
+
+	/*
+	 * Open the file for append.  It must already exist for this
+	 * feature to be used.
+	 */
+
+	fd = open (ftmp, O_WRONLY | O_APPEND);
+	if (-1 == fd) {
+		if (errno != ENOENT) {
+			SYSLOG ((LOG_WARN,
+			        "Can't append failure of user %s to %s: %m",
+			        username, ftmp));
+		}
+		return;
+	}
+
+	/*
+	 * Append the new failure record and close the log file.
+	 */
+
+	if (write_full(fd, failent, sizeof *failent) == -1) {
+		goto err_write;
+	}
+
+	if (close (fd) != 0 && errno != EINTR) {
+		goto err_close;
+	}
+
+	return;
+
+err_write:
+	{
+		int saved_errno = errno;
+		(void) close (fd);
+		errno = saved_errno;
+	}
+err_close:
+	SYSLOG ((LOG_WARN,
+	         "Can't append failure of user %s to %s: %m",
+	         username, ftmp));
+}
+
+
+/*
+ * get_current_utmp - return the most probable utmp entry for the current
+ *                    session
+ *
+ *	The utmp file is scanned for an entry with the same process ID.
+ *	The line entered by the *getty / telnetd, etc. should also match
+ *	the current terminal.
+ *
+ *	When an entry is returned by get_current_utmp, and if the utmpx
+ *	structure has a ut_id field, this field should be used to update
+ *	the entry information.
+ *
+ *	Return NULL if no entries exist in utmp for the current process.
+ */
+static /*@null@*/ /*@only@*/struct utmpx *
+get_current_utmp(void)
+{
+	struct utmpx  *ut;
+	struct utmpx  *ret = NULL;
+
+	setutxent();
+
+	/* First, try to find a valid utmp entry for this process.  */
+	while ((ut = getutxent()) != NULL) {
+		if (   (ut->ut_pid == getpid ())
+		    && ('\0' != ut->ut_id[0])
+		    && (   (LOGIN_PROCESS == ut->ut_type)
+		        || (USER_PROCESS  == ut->ut_type))
+		    /* A process may have failed to close an entry
+		     * Check if this entry refers to the current tty */
+		    && is_my_tty(ut->ut_line))
+		{
+			break;
+		}
+	}
+
+	if (NULL != ut) {
+		ret = XMALLOC(1, struct utmpx);
+		memcpy (ret, ut, sizeof (*ret));
+	}
+
+	endutxent();
+
+	return ret;
+}
+
+
+int
+get_session_host(char **out)
+{
+	int           ret = 0;
+	struct utmpx  *ut;
+
+	ut = get_current_utmp();
+
+#if defined(HAVE_STRUCT_UTMPX_UT_HOST)
+	if ((ut != NULL) && (ut->ut_host[0] != '\0')) {
+		char  *hostname;
+
+		hostname = XMALLOC(sizeof(ut->ut_host) + 1, char);
+		ZUSTR2STP(hostname, ut->ut_host);
+		*out = hostname;
+		free (ut);
+	} else {
+		*out = NULL;
+		ret = -2;
+	}
+#else
+	*out = NULL;
+	ret = -2;
+#endif
+
+	return ret;
+}
+
+
+#if !defined(USE_PAM) && !defined(HAVE_UPDWTMPX)
+/*
+ * Some systems already have updwtmpx().  Others
+ * don't, so we re-implement these functions if necessary.
+ */
+static void
+updwtmpx(const char *filename, const struct utmpx *ut)
+{
+	int fd;
+
+	fd = open (filename, O_APPEND | O_WRONLY, 0);
+	if (fd >= 0) {
+		write_full(fd, ut, sizeof(*ut));
+		close (fd);
+	}
+}
+#endif
+
+
+/*
+ * prepare_utmp - prepare an utmp entry so that it can be logged in a
+ *                utmp/wtmp file.
+ *
+ *	It accepts an utmp entry in input (ut) to return an entry with
+ *	the right ut_id. This is typically an entry returned by
+ *	get_current_utmp
+ *	If ut is NULL, ut_id will be forged based on the line argument.
+ *
+ *	The ut_host field of the input structure may also be kept, and is
+ *	used to define the ut_addr/ut_addr_v6 fields. (if these fields
+ *	exist)
+ *
+ *	Other fields are discarded and filed with new values (if they
+ *	exist).
+ *
+ *	The returned structure shall be freed by the caller.
+ */
+static /*@only@*/struct utmpx *
+prepare_utmp(const char *name, const char *line, const char *host,
+             /*@null@*/const struct utmpx *ut)
+{
+	char            *hostname = NULL;
+	struct utmpx    *utent;
+	struct timeval  tv;
+
+	assert (NULL != name);
+	assert (NULL != line);
+
+
+
+	if (   (NULL != host)
+	    && ('\0' != host[0])) {
+		hostname = XMALLOC(strlen(host) + 1, char);
+		strcpy (hostname, host);
+#if defined(HAVE_STRUCT_UTMPX_UT_HOST)
+	} else if (   (NULL != ut)
+	           && ('\0' != ut->ut_host[0])) {
+		hostname = XMALLOC(NITEMS(ut->ut_host) + 1, char);
+		ZUSTR2STP(hostname, ut->ut_host);
+#endif
+	}
+
+	if (strncmp(line, "/dev/", 5) == 0) {
+		line += 5;
+	}
+
+
+	utent = XCALLOC(1, struct utmpx);
+
+
+	utent->ut_type = USER_PROCESS;
+	utent->ut_pid = getpid ();
+	STRNCPY(utent->ut_line, line);
+	if (NULL != ut) {
+		STRNCPY(utent->ut_id, ut->ut_id);
+	} else {
+		/* XXX - assumes /dev/tty?? */
+		STRNCPY(utent->ut_id, line + 3);
+	}
+#if defined(HAVE_STRUCT_UTMPX_UT_NAME)
+	STRNCPY(utent->ut_name, name);
+#endif
+	STRNCPY(utent->ut_user, name);
+	if (NULL != hostname) {
+		struct addrinfo *info = NULL;
+#if defined(HAVE_STRUCT_UTMPX_UT_HOST)
+		STRNCPY(utent->ut_host, hostname);
+#endif
+#if defined(HAVE_STRUCT_UTMPX_UT_SYSLEN)
+		utent->ut_syslen = MIN (strlen (hostname),
+		                        sizeof (utent->ut_host));
+#endif
+#if defined(HAVE_STRUCT_UTMPX_UT_ADDR) || defined(HAVE_STRUCT_UTMPX_UT_ADDR_V6)
+		if (getaddrinfo (hostname, NULL, NULL, &info) == 0) {
+			/* getaddrinfo might not be reliable.
+			 * Just try to log what may be useful.
+			 */
+			if (info->ai_family == AF_INET) {
+				struct sockaddr_in *sa =
+					(struct sockaddr_in *) info->ai_addr;
+# if defined(HAVE_STRUCT_UTMPX_UT_ADDR)
+				memcpy (&(utent->ut_addr),
+				        &(sa->sin_addr),
+				        MIN (sizeof (utent->ut_addr),
+				             sizeof (sa->sin_addr)));
+# endif
+# if defined(HAVE_STRUCT_UTMPX_UT_ADDR_V6)
+				memcpy (utent->ut_addr_v6,
+				        &(sa->sin_addr),
+				        MIN (sizeof (utent->ut_addr_v6),
+				             sizeof (sa->sin_addr)));
+			} else if (info->ai_family == AF_INET6) {
+				struct sockaddr_in6 *sa =
+					(struct sockaddr_in6 *) info->ai_addr;
+				memcpy (utent->ut_addr_v6,
+				        &(sa->sin6_addr),
+				        MIN (sizeof (utent->ut_addr_v6),
+				             sizeof (sa->sin6_addr)));
+# endif
+			}
+			freeaddrinfo (info);
+		}
+#endif
+		free (hostname);
+	}
+	/* ut_exit is only for DEAD_PROCESS */
+	utent->ut_session = getsid (0);
+	if (gettimeofday (&tv, NULL) == 0) {
+#if defined(HAVE_STRUCT_UTMPX_UT_TIME)
+		utent->ut_time = tv.tv_sec;
+#endif
+#if defined(HAVE_STRUCT_UTMPX_UT_XTIME)
+		utent->ut_xtime = tv.tv_usec;
+#endif
+		utent->ut_tv.tv_sec  = tv.tv_sec;
+		utent->ut_tv.tv_usec = tv.tv_usec;
+	}
+
+	return utent;
+}
+
+
+/*
+ * setutmp - Update an entry in utmp and log an entry in wtmp
+ *
+ *	Return 1 on failure and 0 on success.
+ */
+static int
+setutmp(struct utmpx *ut)
+{
+	int err = 0;
+
+	assert (NULL != ut);
+
+	setutxent();
+	if (pututxline(ut) == NULL) {
+		err = 1;
+	}
+	endutxent();
+
+#if !defined(USE_PAM)
+	/* This is done by pam_lastlog */
+	updwtmpx(_WTMP_FILE, ut);
+#endif
+
+	return err;
+}
+
+
+int
+update_utmp(const char *user, const char *tty, const char *host)
+{
+	struct utmpx  *utent, *ut;
+
+	utent = get_current_utmp ();
+	ut = prepare_utmp  (user, tty, host, utent);
+
+	(void) setutmp  (ut);	/* make entry in the utmp & wtmp files */
+
+	free(utent);
+	free(ut);
+
+	return 0;
+}
+
+
+void
+record_failure(const char *failent_user, const char *tty, const char *hostname)
+{
+	struct utmpx  *utent, *failent;
+
+	if (getdef_str ("FTMP_FILE") != NULL) {
+		utent = get_current_utmp ();
+		failent = prepare_utmp (failent_user, tty, hostname, utent);
+		failtmp (failent_user, failent);
+		free (utent);
+		free (failent);
+	}
+}
+
+
+unsigned long
+active_sessions_count(const char *name, unsigned long limit)
+{
+	struct utmpx   *ut;
+	unsigned long  count = 0;
+
+	setutxent();
+	while ((ut = getutxent()))
+	{
+		if (USER_PROCESS != ut->ut_type) {
+			continue;
+		}
+		if ('\0' == ut->ut_user[0]) {
+			continue;
+		}
+		if (strncmp (name, ut->ut_user, sizeof (ut->ut_user)) != 0) {
+			continue;
+		}
+		count++;
+		if (count > limit) {
+			break;
+		}
+	}
+	endutxent();
+
+	return count;
+}
diff --git a/libmisc/valid.c b/lib/valid.c
index 326635f..326635f 100644
--- a/libmisc/valid.c
+++ b/lib/valid.c
diff --git a/lib/write_full.c b/lib/write_full.c
new file mode 100644
index 0000000..4ef902c
--- /dev/null
+++ b/lib/write_full.c
@@ -0,0 +1,77 @@
+/*
+ * SPDX-FileCopyrightText: 2023, Christian Göttsche <cgzones@googlemail.com>
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <errno.h>
+#include <unistd.h>
+
+#include "prototypes.h"
+
+
+/*
+ * SYNOPSIS
+ *	int write_full(int fd, const void *buf, size_t count);
+ *
+ * ARGUMENTS
+ *	fd	File descriptor.
+ *	buf	Source buffer to write(2) into 'fd'.
+ *	count	Size of 'buf'.
+ *
+ * DESCRIPTION
+ *	Write 'count' bytes from the buffer starting at 'buf' to the
+ *	file referred to by 'fd'.
+ *
+ *	This function is similar to write(2), except that it retries
+ *	in case of a short write.
+ *
+ *	Since this function either performs a full write, or fails, the
+ *	return value is simpler than for write(2).
+ *
+ * RETURN VALUE
+ *	0	On success.
+ *	-1	On error.
+ *
+ * ERRORS
+ *	See write(2).
+ *
+ * CAVEATS
+ *	This function can still perform partial writes: if the function
+ *	fails in the loop after one or more write(2) calls have
+ *	succeeded, it will report a failure, but some data may have been
+ *	written.  In such a case, it's the caller's responsibility to
+ *	make sure that the partial write is not problematic, and
+ *	remediate it if it is --maybe by trying to remove the file--.
+ */
+
+
+int
+write_full(int fd, const void *buf, size_t count)
+{
+	ssize_t              w;
+	const unsigned char  *p;
+
+	p = buf;
+
+	while (count > 0) {
+		w = write(fd, p, count);
+		if (w == -1) {
+			if (errno == EINTR)
+				continue;
+
+			return -1;
+		}
+
+		p += w;
+		count -= w;
+	}
+
+	return 0;
+}
diff --git a/libmisc/xgetXXbyYY.c b/lib/xgetXXbyYY.c
index 6a3f969..7d5e914 100644
--- a/libmisc/xgetXXbyYY.c
+++ b/lib/xgetXXbyYY.c
@@ -23,13 +23,15 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provide wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the name or name_r functions.
  */
 
 #include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <errno.h>
+
+#include "alloc.h"
 #include "prototypes.h"
 #include "shadowlog.h"
 
@@ -50,46 +52,38 @@
 	/* we have to start with something */
 	size_t length = 0x100;
 
-	result = malloc(sizeof(LOOKUP_TYPE));
+	result = MALLOC(1, LOOKUP_TYPE);
 	if (NULL == result) {
-		fprintf (log_get_logfd(), _("%s: out of memory\n"),
-		         "x" STRINGIZE(FUNCTION_NAME));
-		exit (13);
+		goto oom;
 	}
 
 	while (true) {
 		int status;
 		LOOKUP_TYPE *resbuf = NULL;
-		buffer = (char *)realloc (buffer, length);
-		if (NULL == buffer) {
-			fprintf (log_get_logfd(), _("%s: out of memory\n"),
-			         "x" STRINGIZE(FUNCTION_NAME));
-			exit (13);
-		}
+		buffer = XREALLOC(buffer, length, char);
 		status = REENTRANT_NAME(ARG_NAME, result, buffer,
 		                        length, &resbuf);
 		if ((0 == status) && (resbuf == result)) {
 			/* Build a result structure that can be freed by
 			 * the shadow *_free functions. */
 			LOOKUP_TYPE *ret_result = DUP_FUNCTION(result);
+			if (NULL == ret_result) {
+				goto oom;
+			}
 			free(buffer);
 			free(result);
 			return ret_result;
 		}
 
 		if (ERANGE != status) {
-			free (buffer);
-			free (result);
-			return NULL;
+			break;
 		}
 
-		if (length <= ((size_t)-1 / 4)) {
-			length *= 4;
-		} else if (length == (size_t) -1) {
+		if (length == SIZE_MAX) {
 			break;
-		} else {
-			length = (size_t) -1;
 		}
+
+		length = (length <= SIZE_MAX / 4) ? length * 4 : SIZE_MAX;
 	}
 
 	free(buffer);
@@ -109,13 +103,16 @@
 	if (result) {
 		result = DUP_FUNCTION(result);
 		if (NULL == result) {
-			fprintf (log_get_logfd(), _("%s: out of memory\n"),
-			         "x" STRINGIZE(FUNCTION_NAME));
-			exit (13);
+			goto oom;
 		}
 	}
 
 	return result;
 #endif
+
+oom:
+	fprintf (log_get_logfd(), _("%s: out of memory\n"),
+		 "x" STRINGIZE(FUNCTION_NAME));
+	exit (13);
 }
 
diff --git a/libmisc/xgetgrgid.c b/lib/xgetgrgid.c
index fe99929..6419196 100644
--- a/libmisc/xgetgrgid.c
+++ b/lib/xgetgrgid.c
@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provide wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getgrgid or getgrgid_r functions.
  */
 
 #include <config.h>
@@ -35,7 +35,7 @@
 #define ARG_TYPE	gid_t
 #define ARG_NAME	gid
 #define DUP_FUNCTION	__gr_dup
-#define HAVE_FUNCTION_R (defined HAVE_GETGRGID_R)
+#define HAVE_FUNCTION_R 1
 
 #include "xgetXXbyYY.c"
 
diff --git a/libmisc/xgetgrnam.c b/lib/xgetgrnam.c
index 66d6f93..35ad9ee 100644
--- a/libmisc/xgetgrnam.c
+++ b/lib/xgetgrnam.c
@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provide wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getgrnam or getgrnam_r functions.
  */
 
 #include <config.h>
@@ -35,7 +35,7 @@
 #define ARG_TYPE	const char *
 #define ARG_NAME	name
 #define DUP_FUNCTION	__gr_dup
-#define HAVE_FUNCTION_R (defined HAVE_GETGRNAM_R)
+#define HAVE_FUNCTION_R 1
 
 #include "xgetXXbyYY.c"
 
diff --git a/libmisc/xgetpwnam.c b/lib/xgetpwnam.c
index 74eb972..4387e79 100644
--- a/libmisc/xgetpwnam.c
+++ b/lib/xgetpwnam.c
@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provide wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getpwnam or getpwnam_r functions.
  */
 
 #include <config.h>
@@ -35,7 +35,7 @@
 #define ARG_TYPE	const char *
 #define ARG_NAME	name
 #define DUP_FUNCTION	__pw_dup
-#define HAVE_FUNCTION_R (defined HAVE_GETPWNAM_R)
+#define HAVE_FUNCTION_R 1
 
 #include "xgetXXbyYY.c"
 
diff --git a/libmisc/xgetpwuid.c b/lib/xgetpwuid.c
index 23b2d0c..d663a42 100644
--- a/libmisc/xgetpwuid.c
+++ b/lib/xgetpwuid.c
@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provide wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getpwuid or getpwuid_r functions.
  */
 
 #include <config.h>
@@ -35,7 +35,7 @@
 #define ARG_TYPE	uid_t
 #define ARG_NAME	uid
 #define DUP_FUNCTION	__pw_dup
-#define HAVE_FUNCTION_R (defined HAVE_GETPWUID_R)
+#define HAVE_FUNCTION_R 1
 
 #include "xgetXXbyYY.c"
 
diff --git a/libmisc/xgetspnam.c b/lib/xgetspnam.c
index 148185f..ebda94b 100644
--- a/libmisc/xgetspnam.c
+++ b/lib/xgetspnam.c
@@ -23,7 +23,7 @@
  *  Two important function classes that fall into this category are
  *  getpwnam(3) and syslog(3).
  *
- * This file provide wrapper to the getpwnam or getpwnam_r functions.
+ * This file provides wrapper to the getspnam or getspnam_r functions.
  */
 
 #include <config.h>
diff --git a/lib/xprefix_getpwnam.c b/lib/xprefix_getpwnam.c
new file mode 100644
index 0000000..cec0106
--- /dev/null
+++ b/lib/xprefix_getpwnam.c
@@ -0,0 +1,41 @@
+/*
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * According to the Linux-PAM documentation:
+ *
+ *  4.1. Care about standard library calls
+ *
+ *  In general, writers of authorization-granting applications should
+ *  assume that each module is likely to call any or all 'libc' functions.
+ *  For 'libc' functions that return pointers to static/dynamically
+ *  allocated structures (ie.  the library allocates the memory and the
+ *  user is not expected to 'free()' it) any module call to this function
+ *  is likely to corrupt a pointer previously obtained by the application.
+ *  The application programmer should either re-call such a 'libc'
+ *  function after a call to the Linux-PAM library, or copy the structure
+ *  contents to some safe area of memory before passing control to the
+ *  Linux-PAM library.
+ *
+ *  Two important function classes that fall into this category are
+ *  getpwnam(3) and syslog(3).
+ *
+ * This file provides wrapper to the prefix_getpwnam or prefix_getpwnam_r functions.
+ */
+
+#include <config.h>
+
+#include "pwio.h"
+
+#define LOOKUP_TYPE	struct passwd
+#define FUNCTION_NAME	prefix_getpwnam
+#define ARG_TYPE	const char *
+#define ARG_NAME	name
+#define DUP_FUNCTION	__pw_dup
+#define HAVE_FUNCTION_R HAVE_FGETPWENT_R
+
+#include "xgetXXbyYY.c"
+
diff --git a/lib/yesno.c b/lib/yesno.c
new file mode 100644
index 0000000..029cd81
--- /dev/null
+++ b/lib/yesno.c
@@ -0,0 +1,87 @@
+/*
+ * SPDX-FileCopyrightText: 1992 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 2007 - 2008, Nicolas François
+ * SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "prototypes.h"
+
+
+/*
+ * Synopsis
+ *	bool yes_or_no(bool read_only);
+ *
+ * Arguments
+ *	read_only
+ *		In read-only mode, all questions are answered "no".  It
+ *		will print "No" to stdout.
+ *
+ * Description
+ *	After a yes/no question, this function gets the answer from the
+ *	user.
+ *
+ *	Calls to this function will normally be preceeded by a prompt on
+ *	stdout, so we should fflush(3).
+ *
+ * Return value
+ *	false	"no"
+ *	true	"yes"
+ *
+ * See also
+ *	rpmatch(3)
+ */
+
+
+#if !defined(HAVE_RPMATCH)
+static int rpmatch(const char *response);
+#endif
+
+
+bool
+yes_or_no(bool read_only)
+{
+	bool   ret;
+	char   *buf;
+	size_t size;
+
+	if (read_only) {
+		puts(_("No"));
+		return false;
+	}
+
+	fflush(stdout);
+
+	buf = NULL;
+	ret = false;
+	size = 0;
+	if (getline(&buf, &size, stdin) != -1)
+		ret = rpmatch(buf) == 1;
+
+	free(buf);
+	return ret;
+}
+
+
+#if !defined(HAVE_RPMATCH)
+static int
+rpmatch(const char *response)
+{
+	if (response[0] == 'y' || response[0] == 'Y')
+		return 1;
+
+	if (response[0] == 'n' || response[0] == 'n')
+		return 0;
+
+	return -1;
+}
+#endif
diff --git a/libmisc/.indent.pro b/libmisc/.indent.pro
deleted file mode 100644
index fe572bb..0000000
--- a/libmisc/.indent.pro
+++ /dev/null
@@ -1,5 +0,0 @@
--kr
--i8
--bad
--pcs
--l80
diff --git a/libmisc/Makefile.am b/libmisc/Makefile.am
deleted file mode 100644
index 3d319cd..0000000
--- a/libmisc/Makefile.am
+++ /dev/null
@@ -1,80 +0,0 @@
-
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-
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-
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-
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-	addgrps.c \
-	age.c \
-	audit_help.c \
-	basename.c \
-	chkname.c \
-	chkname.h \
-	chowndir.c \
-	chowntty.c \
-	cleanup.c \
-	cleanup_group.c \
-	cleanup_user.c \
-	console.c \
-	copydir.c \
-	date_to_str.c \
-	entry.c \
-	env.c \
-	failure.c \
-	failure.h \
-	find_new_gid.c \
-	find_new_uid.c \
-	find_new_sub_gids.c \
-	find_new_sub_uids.c \
-	getdate.h \
-	getdate.y \
-	getgr_nam_gid.c \
-	getrange.c \
-	gettime.c \
-	hushed.c \
-	idmapping.h \
-	idmapping.c \
-	isexpired.c \
-	limits.c \
-	list.c log.c \
-	loginprompt.c \
-	mail.c \
-	motd.c \
-	myname.c \
-	obscure.c \
-	pam_pass.c \
-	pam_pass_non_interactive.c \
-	prefix_flag.c \
-	pwd2spwd.c \
-	pwdcheck.c \
-	pwd_init.c \
-	remove_tree.c \
-	rlogin.c \
-	root_flag.c \
-	salt.c \
-	setugid.c \
-	setupenv.c \
-	shell.c \
-	strtoday.c \
-	sub.c \
-	sulog.c \
-	ttytype.c \
-	tz.c \
-	ulimit.c \
-	user_busy.c \
-	utmp.c \
-	valid.c \
-	xgetpwnam.c \
-	xgetpwuid.c \
-	xgetgrnam.c \
-	xgetgrgid.c \
-	xgetspnam.c \
-	xmalloc.c \
-	yesno.c
-
-if WITH_BTRFS
-libmisc_la_SOURCES += btrfs.c
-endif
-
diff --git a/libmisc/Makefile.in b/libmisc/Makefile.in
deleted file mode 100644
index 2defd8e..0000000
--- a/libmisc/Makefile.in
+++ /dev/null
@@ -1,927 +0,0 @@
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-	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
-	    if test -d "$(distdir)/$$file"; then \
-	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
-	    fi; \
-	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
-	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
-	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
-	    fi; \
-	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
-	  else \
-	    test -f "$(distdir)/$$file" \
-	    || cp -p $$d/$$file "$(distdir)/$$file" \
-	    || exit 1; \
-	  fi; \
-	done
-check-am: all-am
-check: check-am
-all-am: Makefile $(LTLIBRARIES)
-installdirs:
-install: install-am
-install-exec: install-exec-am
-install-data: install-data-am
-uninstall: uninstall-am
-
-install-am: all-am
-	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
-
-installcheck: installcheck-am
-install-strip:
-	if test -z '$(STRIP)'; then \
-	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
-	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
-	      install; \
-	else \
-	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
-	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
-	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
-	fi
-mostlyclean-generic:
-
-clean-generic:
-
-distclean-generic:
-	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
-	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-
-maintainer-clean-generic:
-	@echo "This command is intended for maintainers to use"
-	@echo "it deletes files that may require special tools to rebuild."
-	-rm -f getdate.c
-clean: clean-am
-
-clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
-	mostlyclean-am
-
-distclean: distclean-am
-		-rm -f ./$(DEPDIR)/addgrps.Plo
-	-rm -f ./$(DEPDIR)/age.Plo
-	-rm -f ./$(DEPDIR)/audit_help.Plo
-	-rm -f ./$(DEPDIR)/basename.Plo
-	-rm -f ./$(DEPDIR)/btrfs.Plo
-	-rm -f ./$(DEPDIR)/chkname.Plo
-	-rm -f ./$(DEPDIR)/chowndir.Plo
-	-rm -f ./$(DEPDIR)/chowntty.Plo
-	-rm -f ./$(DEPDIR)/cleanup.Plo
-	-rm -f ./$(DEPDIR)/cleanup_group.Plo
-	-rm -f ./$(DEPDIR)/cleanup_user.Plo
-	-rm -f ./$(DEPDIR)/console.Plo
-	-rm -f ./$(DEPDIR)/copydir.Plo
-	-rm -f ./$(DEPDIR)/date_to_str.Plo
-	-rm -f ./$(DEPDIR)/entry.Plo
-	-rm -f ./$(DEPDIR)/env.Plo
-	-rm -f ./$(DEPDIR)/failure.Plo
-	-rm -f ./$(DEPDIR)/find_new_gid.Plo
-	-rm -f ./$(DEPDIR)/find_new_sub_gids.Plo
-	-rm -f ./$(DEPDIR)/find_new_sub_uids.Plo
-	-rm -f ./$(DEPDIR)/find_new_uid.Plo
-	-rm -f ./$(DEPDIR)/getdate.Plo
-	-rm -f ./$(DEPDIR)/getgr_nam_gid.Plo
-	-rm -f ./$(DEPDIR)/getrange.Plo
-	-rm -f ./$(DEPDIR)/gettime.Plo
-	-rm -f ./$(DEPDIR)/hushed.Plo
-	-rm -f ./$(DEPDIR)/idmapping.Plo
-	-rm -f ./$(DEPDIR)/isexpired.Plo
-	-rm -f ./$(DEPDIR)/limits.Plo
-	-rm -f ./$(DEPDIR)/list.Plo
-	-rm -f ./$(DEPDIR)/log.Plo
-	-rm -f ./$(DEPDIR)/loginprompt.Plo
-	-rm -f ./$(DEPDIR)/mail.Plo
-	-rm -f ./$(DEPDIR)/motd.Plo
-	-rm -f ./$(DEPDIR)/myname.Plo
-	-rm -f ./$(DEPDIR)/obscure.Plo
-	-rm -f ./$(DEPDIR)/pam_pass.Plo
-	-rm -f ./$(DEPDIR)/pam_pass_non_interactive.Plo
-	-rm -f ./$(DEPDIR)/prefix_flag.Plo
-	-rm -f ./$(DEPDIR)/pwd2spwd.Plo
-	-rm -f ./$(DEPDIR)/pwd_init.Plo
-	-rm -f ./$(DEPDIR)/pwdcheck.Plo
-	-rm -f ./$(DEPDIR)/remove_tree.Plo
-	-rm -f ./$(DEPDIR)/rlogin.Plo
-	-rm -f ./$(DEPDIR)/root_flag.Plo
-	-rm -f ./$(DEPDIR)/salt.Plo
-	-rm -f ./$(DEPDIR)/setugid.Plo
-	-rm -f ./$(DEPDIR)/setupenv.Plo
-	-rm -f ./$(DEPDIR)/shell.Plo
-	-rm -f ./$(DEPDIR)/strtoday.Plo
-	-rm -f ./$(DEPDIR)/sub.Plo
-	-rm -f ./$(DEPDIR)/sulog.Plo
-	-rm -f ./$(DEPDIR)/ttytype.Plo
-	-rm -f ./$(DEPDIR)/tz.Plo
-	-rm -f ./$(DEPDIR)/ulimit.Plo
-	-rm -f ./$(DEPDIR)/user_busy.Plo
-	-rm -f ./$(DEPDIR)/utmp.Plo
-	-rm -f ./$(DEPDIR)/valid.Plo
-	-rm -f ./$(DEPDIR)/xgetgrgid.Plo
-	-rm -f ./$(DEPDIR)/xgetgrnam.Plo
-	-rm -f ./$(DEPDIR)/xgetpwnam.Plo
-	-rm -f ./$(DEPDIR)/xgetpwuid.Plo
-	-rm -f ./$(DEPDIR)/xgetspnam.Plo
-	-rm -f ./$(DEPDIR)/xmalloc.Plo
-	-rm -f ./$(DEPDIR)/yesno.Plo
-	-rm -f Makefile
-distclean-am: clean-am distclean-compile distclean-generic \
-	distclean-tags
-
-dvi: dvi-am
-
-dvi-am:
-
-html: html-am
-
-html-am:
-
-info: info-am
-
-info-am:
-
-install-data-am:
-
-install-dvi: install-dvi-am
-
-install-dvi-am:
-
-install-exec-am:
-
-install-html: install-html-am
-
-install-html-am:
-
-install-info: install-info-am
-
-install-info-am:
-
-install-man:
-
-install-pdf: install-pdf-am
-
-install-pdf-am:
-
-install-ps: install-ps-am
-
-install-ps-am:
-
-installcheck-am:
-
-maintainer-clean: maintainer-clean-am
-		-rm -f ./$(DEPDIR)/addgrps.Plo
-	-rm -f ./$(DEPDIR)/age.Plo
-	-rm -f ./$(DEPDIR)/audit_help.Plo
-	-rm -f ./$(DEPDIR)/basename.Plo
-	-rm -f ./$(DEPDIR)/btrfs.Plo
-	-rm -f ./$(DEPDIR)/chkname.Plo
-	-rm -f ./$(DEPDIR)/chowndir.Plo
-	-rm -f ./$(DEPDIR)/chowntty.Plo
-	-rm -f ./$(DEPDIR)/cleanup.Plo
-	-rm -f ./$(DEPDIR)/cleanup_group.Plo
-	-rm -f ./$(DEPDIR)/cleanup_user.Plo
-	-rm -f ./$(DEPDIR)/console.Plo
-	-rm -f ./$(DEPDIR)/copydir.Plo
-	-rm -f ./$(DEPDIR)/date_to_str.Plo
-	-rm -f ./$(DEPDIR)/entry.Plo
-	-rm -f ./$(DEPDIR)/env.Plo
-	-rm -f ./$(DEPDIR)/failure.Plo
-	-rm -f ./$(DEPDIR)/find_new_gid.Plo
-	-rm -f ./$(DEPDIR)/find_new_sub_gids.Plo
-	-rm -f ./$(DEPDIR)/find_new_sub_uids.Plo
-	-rm -f ./$(DEPDIR)/find_new_uid.Plo
-	-rm -f ./$(DEPDIR)/getdate.Plo
-	-rm -f ./$(DEPDIR)/getgr_nam_gid.Plo
-	-rm -f ./$(DEPDIR)/getrange.Plo
-	-rm -f ./$(DEPDIR)/gettime.Plo
-	-rm -f ./$(DEPDIR)/hushed.Plo
-	-rm -f ./$(DEPDIR)/idmapping.Plo
-	-rm -f ./$(DEPDIR)/isexpired.Plo
-	-rm -f ./$(DEPDIR)/limits.Plo
-	-rm -f ./$(DEPDIR)/list.Plo
-	-rm -f ./$(DEPDIR)/log.Plo
-	-rm -f ./$(DEPDIR)/loginprompt.Plo
-	-rm -f ./$(DEPDIR)/mail.Plo
-	-rm -f ./$(DEPDIR)/motd.Plo
-	-rm -f ./$(DEPDIR)/myname.Plo
-	-rm -f ./$(DEPDIR)/obscure.Plo
-	-rm -f ./$(DEPDIR)/pam_pass.Plo
-	-rm -f ./$(DEPDIR)/pam_pass_non_interactive.Plo
-	-rm -f ./$(DEPDIR)/prefix_flag.Plo
-	-rm -f ./$(DEPDIR)/pwd2spwd.Plo
-	-rm -f ./$(DEPDIR)/pwd_init.Plo
-	-rm -f ./$(DEPDIR)/pwdcheck.Plo
-	-rm -f ./$(DEPDIR)/remove_tree.Plo
-	-rm -f ./$(DEPDIR)/rlogin.Plo
-	-rm -f ./$(DEPDIR)/root_flag.Plo
-	-rm -f ./$(DEPDIR)/salt.Plo
-	-rm -f ./$(DEPDIR)/setugid.Plo
-	-rm -f ./$(DEPDIR)/setupenv.Plo
-	-rm -f ./$(DEPDIR)/shell.Plo
-	-rm -f ./$(DEPDIR)/strtoday.Plo
-	-rm -f ./$(DEPDIR)/sub.Plo
-	-rm -f ./$(DEPDIR)/sulog.Plo
-	-rm -f ./$(DEPDIR)/ttytype.Plo
-	-rm -f ./$(DEPDIR)/tz.Plo
-	-rm -f ./$(DEPDIR)/ulimit.Plo
-	-rm -f ./$(DEPDIR)/user_busy.Plo
-	-rm -f ./$(DEPDIR)/utmp.Plo
-	-rm -f ./$(DEPDIR)/valid.Plo
-	-rm -f ./$(DEPDIR)/xgetgrgid.Plo
-	-rm -f ./$(DEPDIR)/xgetgrnam.Plo
-	-rm -f ./$(DEPDIR)/xgetpwnam.Plo
-	-rm -f ./$(DEPDIR)/xgetpwuid.Plo
-	-rm -f ./$(DEPDIR)/xgetspnam.Plo
-	-rm -f ./$(DEPDIR)/xmalloc.Plo
-	-rm -f ./$(DEPDIR)/yesno.Plo
-	-rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
-mostlyclean: mostlyclean-am
-
-mostlyclean-am: mostlyclean-compile mostlyclean-generic \
-	mostlyclean-libtool
-
-pdf: pdf-am
-
-pdf-am:
-
-ps: ps-am
-
-ps-am:
-
-uninstall-am:
-
-.MAKE: install-am install-strip
-
-.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
-	clean-generic clean-libtool clean-noinstLTLIBRARIES \
-	cscopelist-am ctags ctags-am distclean distclean-compile \
-	distclean-generic distclean-libtool distclean-tags distdir dvi \
-	dvi-am html html-am info info-am install install-am \
-	install-data install-data-am install-dvi install-dvi-am \
-	install-exec install-exec-am install-html install-html-am \
-	install-info install-info-am install-man install-pdf \
-	install-pdf-am install-ps install-ps-am install-strip \
-	installcheck installcheck-am installdirs maintainer-clean \
-	maintainer-clean-generic mostlyclean mostlyclean-compile \
-	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
-	tags tags-am uninstall uninstall-am
-
-.PRECIOUS: Makefile
-
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/libmisc/date_to_str.c b/libmisc/date_to_str.c
deleted file mode 100644
index 07e99f1..0000000
--- a/libmisc/date_to_str.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (c) 2021, Alejandro Colomar <alx.manpages@gmail.com>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the copyright holders or contributors may not be used to
- *    endorse or promote products derived from this software without
- *    specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <string.h>
-#include <time.h>
-
-#ident "$Id$"
-
-#include "prototypes.h"
-
-void date_to_str (size_t size, char buf[size], long date)
-{
-	time_t t;
-
-	t = date;
-	if (date < 0)
-		(void) strncpy (buf, "never", size);
-	else
-		(void) strftime (buf, size, "%Y-%m-%d", gmtime (&t));
-	buf[size - 1] = '\0';
-}
diff --git a/libmisc/entry.c b/libmisc/entry.c
deleted file mode 100644
index 87f5754..0000000
--- a/libmisc/entry.c
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
- * SPDX-FileCopyrightText: 2007 - 2008, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ident "$Id$"
-
-#include <sys/types.h>
-#include <stdio.h>
-#include "prototypes.h"
-#include "defines.h"
-#include <pwd.h>
-
-void pw_entry (const char *name, struct passwd *pwent)
-{
-	struct passwd *passwd;
-
-	struct spwd *spwd;
-
-	if (!(passwd = getpwnam (name))) { /* local, no need for xgetpwnam */
-		pwent->pw_name = (char *) 0;
-		return;
-	} else {
-		pwent->pw_name = xstrdup (passwd->pw_name);
-		pwent->pw_uid = passwd->pw_uid;
-		pwent->pw_gid = passwd->pw_gid;
-		pwent->pw_gecos = xstrdup (passwd->pw_gecos);
-		pwent->pw_dir = xstrdup (passwd->pw_dir);
-		pwent->pw_shell = xstrdup (passwd->pw_shell);
-#if !defined(AUTOSHADOW)
-		/* local, no need for xgetspnam */
-		if ((spwd = getspnam (name))) {
-			pwent->pw_passwd = xstrdup (spwd->sp_pwdp);
-			return;
-		}
-#endif
-		pwent->pw_passwd = xstrdup (passwd->pw_passwd);
-	}
-}
diff --git a/libmisc/getrange.c b/libmisc/getrange.c
deleted file mode 100644
index 82f2edf..0000000
--- a/libmisc/getrange.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2008       , Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ident "$Id: $"
-
-#include <ctype.h>
-#include <stdlib.h>
-
-#include "defines.h"
-#include "prototypes.h"
-
-/*
- * Parse a range and indicate if the range is valid.
- * Valid ranges are in the form:
- *     <long>          -> min=max=long         has_min  has_max
- *     -<long>         -> max=long            !has_min  has_max
- *     <long>-         -> min=long             has_min !has_max
- *     <long1>-<long2> -> min=long1 max=long2  has_min  has_max
- *
- * If the range is valid, getrange returns 1.
- * If the range is not valid, getrange returns 0.
- */
-int getrange (const char *range,
-              unsigned long *min, bool *has_min,
-              unsigned long *max, bool *has_max)
-{
-	char *endptr;
-	unsigned long n;
-
-	if (NULL == range) {
-		return 0;
-	}
-
-	if ('-' == range[0]) {
-		if (!isdigit(range[1])) {
-			/* invalid */
-			return 0;
-		}
-		errno = 0;
-		n = strtoul (&range[1], &endptr, 10);
-		if (('\0' != *endptr) || (ERANGE == errno)) {
-			/* invalid */
-			return 0;
-		}
-		/* -<long> */
-		*has_min = false;
-		*has_max = true;
-		*max = n;
-	} else {
-		errno = 0;
-		n = strtoul (range, &endptr, 10);
-		if (ERANGE == errno) {
-			/* invalid */
-			return 0;
-		}
-		switch (*endptr) {
-			case '\0':
-				/* <long> */
-				*has_min = true;
-				*has_max = true;
-				*min = n;
-				*max = n;
-				break;
-			case '-':
-				endptr++;
-				if ('\0' == *endptr) {
-					/* <long>- */
-					*has_min = true;
-					*has_max = false;
-					*min = n;
-				} else if (!isdigit (*endptr)) {
-					/* invalid */
-					return 0;
-				} else {
-					*has_min = true;
-					*min = n;
-					errno = 0;
-					n = strtoul (endptr, &endptr, 10);
-					if (   ('\0' != *endptr)
-					    || (ERANGE == errno)) {
-						/* invalid */
-						return 0;
-					}
-					/* <long>-<long> */
-					*has_max = true;
-					*max = n;
-				}
-				break;
-			default:
-				return 0;
-		}
-	}
-
-	return 1;
-}
-
diff --git a/libmisc/gettime.c b/libmisc/gettime.c
deleted file mode 100644
index b288402..0000000
--- a/libmisc/gettime.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2017, Chris Lamb
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ident "$Id$"
-
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include "defines.h"
-#include "prototypes.h"
-#include "shadowlog.h"
-
-/*
- * gettime() returns the time as the number of seconds since the Epoch
- *
- * Like time(), gettime() returns the time as the number of seconds since the
- * Epoch, 1970-01-01 00:00:00 +0000 (UTC), except that if the SOURCE_DATE_EPOCH
- * environment variable is exported it will use that instead.
- */
-/*@observer@*/time_t gettime ()
-{
-	char *endptr;
-	char *source_date_epoch;
-	time_t fallback;
-	unsigned long long epoch;
-	FILE *shadow_logfd = log_get_logfd();
-
-	fallback = time (NULL);
-	source_date_epoch = shadow_getenv ("SOURCE_DATE_EPOCH");
-
-	if (!source_date_epoch)
-		return fallback;
-
-	errno = 0;
-	epoch = strtoull (source_date_epoch, &endptr, 10);
-	if ((errno == ERANGE && (epoch == ULLONG_MAX || epoch == 0))
-			|| (errno != 0 && epoch == 0)) {
-		fprintf (shadow_logfd,
-			 _("Environment variable $SOURCE_DATE_EPOCH: strtoull: %s\n"),
-			 strerror(errno));
-	} else if (endptr == source_date_epoch) {
-		fprintf (shadow_logfd,
-			 _("Environment variable $SOURCE_DATE_EPOCH: No digits were found: %s\n"),
-			 endptr);
-	} else if (*endptr != '\0') {
-		fprintf (shadow_logfd,
-			 _("Environment variable $SOURCE_DATE_EPOCH: Trailing garbage: %s\n"),
-			 endptr);
-	} else if (epoch > ULONG_MAX) {
-		fprintf (shadow_logfd,
-			 _("Environment variable $SOURCE_DATE_EPOCH: value must be smaller than or equal to %lu but was found to be: %llu\n"),
-			 ULONG_MAX, epoch);
-	} else if (epoch > fallback) {
-		fprintf (shadow_logfd,
-			 _("Environment variable $SOURCE_DATE_EPOCH: value must be smaller than or equal to the current time (%lu) but was found to be: %llu\n"),
-			 fallback, epoch);
-	} else {
-		/* Valid */
-		return (time_t)epoch;
-	}
-
-	return fallback;
-}
diff --git a/libmisc/loginprompt.c b/libmisc/loginprompt.c
deleted file mode 100644
index 0a67f46..0000000
--- a/libmisc/loginprompt.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1989 - 1993, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
- * SPDX-FileCopyrightText: 2008 - 2011, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#ident "$Id$"
-
-#include <assert.h>
-#include <stdio.h>
-#include <signal.h>
-#include <ctype.h>
-#include "prototypes.h"
-#include "defines.h"
-#include "getdef.h"
-
-static void login_exit (unused int sig)
-{
-	exit (EXIT_FAILURE);
-}
-
-/*
- * login_prompt - prompt the user for their login name
- *
- * login_prompt() displays the standard login prompt.  If ISSUE_FILE
- * is set in login.defs, this file is displayed before the prompt.
- */
-
-void login_prompt (const char *prompt, char *name, int namesize)
-{
-	char buf[1024];
-
-#define MAX_ENV 32
-	char *envp[MAX_ENV];
-	char *cp;
-	int i;
-	FILE *fp;
-
-	sighandler_t sigquit;
-#ifdef	SIGTSTP
-	sighandler_t sigtstp;
-#endif
-
-	/*
-	 * There is a small chance that a QUIT character will be part of
-	 * some random noise during a prompt.  Deal with this by exiting
-	 * instead of core dumping.  If SIGTSTP is defined, do the same
-	 * thing for that signal.
-	 */
-
-	sigquit = signal (SIGQUIT, login_exit);
-#ifdef	SIGTSTP
-	sigtstp = signal (SIGTSTP, login_exit);
-#endif
-
-	/*
-	 * See if the user has configured the issue file to
-	 * be displayed and display it before the prompt.
-	 */
-
-	if (NULL != prompt) {
-		const char *fname = getdef_str ("ISSUE_FILE");
-		if (NULL != fname) {
-			fp = fopen (fname, "r");
-			if (NULL != fp) {
-				while ((i = getc (fp)) != EOF) {
-					(void) putc (i, stdout);
-				}
-
-				(void) fclose (fp);
-			}
-		}
-		(void) gethostname (buf, sizeof buf);
-		printf (prompt, buf);
-		(void) fflush (stdout);
-	}
-
-	/*
-	 * Read the user's response.  The trailing newline will be
-	 * removed.
-	 */
-
-	memzero (buf, sizeof buf);
-	if (fgets (buf, (int) sizeof buf, stdin) != buf) {
-		exit (EXIT_FAILURE);
-	}
-
-	cp = strchr (buf, '\n');
-	if (NULL == cp) {
-		exit (EXIT_FAILURE);
-	}
-	*cp = '\0';		/* remove \n [ must be there ] */
-
-	/*
-	 * Skip leading whitespace.  This makes "  username" work right.
-	 * Then copy the rest (up to the end or the first "non-graphic"
-	 * character into the username.
-	 */
-
-	for (cp = buf; *cp == ' ' || *cp == '\t'; cp++);
-
-	for (i = 0; i < namesize - 1 && isgraph (*cp); name[i++] = *cp++);
-	while (isgraph (*cp)) {
-		cp++;
-	}
-
-	if ('\0' != *cp) {
-		cp++;
-	}
-
-	name[i] = '\0';
-
-	/*
-	 * This is a disaster, at best.  The user may have entered extra
-	 * environmental variables at the prompt.  There are several ways
-	 * to do this, and I just take the easy way out.
-	 */
-
-	if ('\0' != *cp) {	/* process new variables */
-		char *nvar;
-		int count = 1;
-		int envc;
-
-		for (envc = 0; envc < MAX_ENV; envc++) {
-			nvar = strtok ((0 != envc) ? (char *) 0 : cp, " \t,");
-			if (NULL == nvar) {
-				break;
-			}
-			if (strchr (nvar, '=') != NULL) {
-				envp[envc] = nvar;
-			} else {
-				size_t len = strlen (nvar) + 32;
-				envp[envc] = xmalloc (len);
-				(void) snprintf (envp[envc], len,
-				                 "L%d=%s", count++, nvar);
-			}
-		}
-		set_env (envc, envp);
-	}
-
-	/*
-	 * Set the SIGQUIT handler back to its original value
-	 */
-
-	(void) signal (SIGQUIT, sigquit);
-#ifdef	SIGTSTP
-	(void) signal (SIGTSTP, sigtstp);
-#endif
-}
-
diff --git a/libmisc/strtoday.c b/libmisc/strtoday.c
deleted file mode 100644
index d321873..0000000
--- a/libmisc/strtoday.c
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1991 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
- * SPDX-FileCopyrightText: 2008       , Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#if !defined(__GLIBC__)
-#define _XOPEN_SOURCE 500
-#endif
-
-#include <config.h>
-
-#include <ctype.h>
-
-#ident "$Id$"
-
-#include "defines.h"
-#include "prototypes.h"
-
-#ifndef USE_GETDATE
-#define USE_GETDATE 1
-#endif
-
-#if USE_GETDATE
-#include "getdate.h"
-/*
- * strtoday() now uses get_date() (borrowed from GNU shellutils)
- * which can handle many date formats, for example:
- *	1970-09-17	# ISO 8601.
- *	70-9-17		# This century assumed by default.
- *	70-09-17	# Leading zeros are ignored.
- *	9/17/72		# Common U.S. writing.
- *	24 September 1972
- *	24 Sept 72	# September has a special abbreviation.
- *	24 Sep 72	# Three-letter abbreviations always allowed.
- *	Sep 24, 1972
- *	24-sep-72
- *	24sep72
- */
-long strtoday (const char *str)
-{
-	time_t t;
-	bool isnum = true;
-	const char *s = str;
-
-	/*
-	 * get_date() interprets an empty string as the current date,
-	 * which is not what we expect, unless you're a BOFH :-).
-	 * (useradd sets sp_expire = current date for new lusers)
-	 */
-	if ((NULL == str) || ('\0' == *str)) {
-		return -1;
-	}
-
-	/* If a numerical value is provided, this is already a number of
-	 * days since EPOCH.
-	 */
-	if ('-' == *s) {
-		s++;
-	}
-	while (' ' == *s) {
-		s++;
-	}
-	while (isnum && ('\0' != *s)) {
-		if (!isdigit (*s)) {
-			isnum = false;
-		}
-		s++;
-	}
-	if (isnum) {
-		long retdate;
-		if (getlong (str, &retdate) == 0) {
-			return -2;
-		}
-		return retdate;
-	}
-
-	t = get_date (str, NULL);
-	if ((time_t) - 1 == t) {
-		return -2;
-	}
-	/* convert seconds to days since 1970-01-01 */
-	return (long) (t + DAY / 2) / DAY;
-}
-
-#else				/* !USE_GETDATE */
-/*
- * Old code, just in case get_date() doesn't work as expected...
- */
-#include <stdio.h>
-#ifdef HAVE_STRPTIME
-/*
- * for now we allow just one format, but we can define more later
- * (we try them all until one succeeds).  --marekm
- */
-static const char *const date_formats[] = {
-	"%Y-%m-%d",
-	(char *) 0
-};
-#else
-/*
- * days and juldays are used to compute the number of days in the
- * current month, and the cumulative number of days in the preceding
- * months.  they are declared so that january is 1, not 0.
- */
-static const short days[13] = { 0,
-	31, 28, 31, 30, 31, 30,	/* JAN - JUN */
-	31, 31, 30, 31, 30, 31
-};				/* JUL - DEC */
-
-static const short juldays[13] = { 0,
-	0, 31, 59, 90, 120, 151,	/* JAN - JUN */
-	181, 212, 243, 273, 304, 334
-};				/* JUL - DEC */
-#endif
-
-/*
- * strtoday - compute the number of days since 1970.
- *
- * the total number of days prior to the current date is
- * computed.  january 1, 1970 is used as the origin with
- * it having a day number of 0.
- */
-
-long strtoday (const char *str)
-{
-#ifdef HAVE_STRPTIME
-	struct tm tp;
-	const char *const *fmt;
-	char *cp;
-	time_t result;
-
-	memzero (&tp, sizeof tp);
-	for (fmt = date_formats; *fmt; fmt++) {
-		cp = strptime ((char *) str, *fmt, &tp);
-		if ((NULL == cp) || ('\0' != *cp)) {
-			continue;
-		}
-
-		result = mktime (&tp);
-		if ((time_t) - 1 == result) {
-			continue;
-		}
-
-		return (long) (result / DAY);	/* success */
-	}
-	return -1;
-#else
-	char slop[2];
-	int month;
-	int day;
-	int year;
-	long total;
-
-	/*
-	 * start by separating the month, day and year.  the order
-	 * is compiled in ...
-	 */
-
-	if (sscanf (str, "%d/%d/%d%c", &year, &month, &day, slop) != 3) {
-		return -1;
-	}
-
-	/*
-	 * the month, day of the month, and year are checked for
-	 * correctness and the year adjusted so it falls between
-	 * 1970 and 2069.
-	 */
-
-	if ((month < 1) || (month > 12)) {
-		return -1;
-	}
-
-	if (day < 1) {
-		return -1;
-	}
-
-	if (   ((2 != month) || ((year % 4) != 0))
-	    && (day > days[month])) {
-		return -1;
-	} else if ((month == 2) && ((year % 4) == 0) && (day > 29)) {
-		return -1;
-	}
-
-	if (year < 0) {
-		return -1;
-	} else if (year <= 69) {
-		year += 2000;
-	} else if (year <= 99) {
-		year += 1900;
-	}
-
-	/*
-	 * On systems with 32-bit signed time_t, time wraps around in 2038
-	 * - for now we just limit the year to 2037 (instead of 2069).
-	 * This limit can be removed once no one is using 32-bit systems
-	 * anymore :-).  --marekm
-	 */
-	if ((year < 1970) || (year > 2037)) {
-		return -1;
-	}
-
-	/*
-	 * the total number of days is the total number of days in all
-	 * the whole years, plus the number of leap days, plus the
-	 * number of days in the whole months preceding, plus the number
-	 * of days so far in the month.
-	 */
-
-	total = (long) ((year - 1970) * 365L) + (((year + 1) - 1970) / 4);
-	total += (long) juldays[month] + (month > 2 && (year % 4) == 0 ? 1 : 0);
-	total += (long) day - 1;
-
-	return total;
-#endif				/* HAVE_STRPTIME */
-}
-#endif				/* !USE_GETDATE */
diff --git a/libmisc/utmp.c b/libmisc/utmp.c
deleted file mode 100644
index 45b479f..0000000
--- a/libmisc/utmp.c
+++ /dev/null
@@ -1,474 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2001 - 2005, Tomasz Kłoczko
- * SPDX-FileCopyrightText: 2008 - 2009, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#include "defines.h"
-#include "prototypes.h"
-
-#ifdef USE_UTMPX
-#include <utmpx.h>
-#else
-#include <utmp.h>
-#endif
-
-#include <assert.h>
-#include <sys/param.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <stdio.h>
-
-#ident "$Id$"
-
-
-/*
- * is_my_tty -- determine if "tty" is the same TTY stdin is using
- */
-static bool is_my_tty (const char *tty)
-{
-	/* full_tty shall be at least sizeof utmp.ut_line + 5 */
-	char full_tty[200];
-	/* tmptty shall be bigger than full_tty */
-	static char tmptty[sizeof (full_tty)+1];
-
-	if ('/' != *tty) {
-		(void) snprintf (full_tty, sizeof full_tty, "/dev/%s", tty);
-		tty = &full_tty[0];
-	}
-
-	if ('\0' == tmptty[0]) {
-		const char *tname = ttyname (STDIN_FILENO);
-		if (NULL != tname) {
-			(void) strncpy (tmptty, tname, sizeof tmptty);
-			tmptty[sizeof (tmptty) - 1] = '\0';
-		}
-	}
-
-	if ('\0' == tmptty[0]) {
-		(void) puts (_("Unable to determine your tty name."));
-		exit (EXIT_FAILURE);
-	} else if (strncmp (tty, tmptty, sizeof (tmptty)) != 0) {
-		return false;
-	} else {
-		return true;
-	}
-}
-
-/*
- * get_current_utmp - return the most probable utmp entry for the current
- *                    session
- *
- *	The utmp file is scanned for an entry with the same process ID.
- *	The line entered by the *getty / telnetd, etc. should also match
- *	the current terminal.
- *
- *	When an entry is returned by get_current_utmp, and if the utmp
- *	structure has a ut_id field, this field should be used to update
- *	the entry information.
- *
- *	Return NULL if no entries exist in utmp for the current process.
- */
-#ifndef USE_UTMPX
-/*@null@*/ /*@only@*/struct utmp *get_current_utmp (void)
-{
-	struct utmp *ut;
-	struct utmp *ret = NULL;
-
-	setutent ();
-
-	/* First, try to find a valid utmp entry for this process.  */
-	while ((ut = getutent ()) != NULL) {
-		if (   (ut->ut_pid == getpid ())
-#ifdef HAVE_STRUCT_UTMP_UT_ID
-		    && ('\0' != ut->ut_id[0])
-#endif
-#ifdef HAVE_STRUCT_UTMP_UT_TYPE
-		    && (   (LOGIN_PROCESS == ut->ut_type)
-		        || (USER_PROCESS  == ut->ut_type))
-#endif
-		    /* A process may have failed to close an entry
-		     * Check if this entry refers to the current tty */
-		    && is_my_tty (ut->ut_line)) {
-			break;
-		}
-	}
-
-	if (NULL != ut) {
-		ret = (struct utmp *) xmalloc (sizeof (*ret));
-		memcpy (ret, ut, sizeof (*ret));
-	}
-
-	endutent ();
-
-	return ret;
-}
-#else
-/*@null@*/ /*@only*/struct utmpx *get_current_utmp(void)
-{
-	struct utmpx *ut;
-	struct utmpx *ret = NULL;
-
-	setutxent ();
-
-	/* Find the utmpx entry for this PID. */
-	while ((ut = getutxent ()) != NULL) {
-		if (   (ut->ut_pid == getpid ())
-		    && ('\0' != ut->ut_id[0])
-		    && (   (LOGIN_PROCESS == ut->ut_type)
-			|| (USER_PROCESS == ut->ut_type))
-		    && is_my_tty (ut->ut_line)) {
-			break;
-		}
-	}
-
-	if (NULL != ut) {
-		ret = (struct utmpx *) xmalloc (sizeof (*ret));
-		memcpy (ret, ut, sizeof (*ret));
-	}
-
-	endutxent ();
-
-	return ret;
-}
-#endif
-
-
-#ifndef USE_PAM
-/*
- * Some systems already have updwtmp() and possibly updwtmpx().  Others
- * don't, so we re-implement these functions if necessary.
- */
-#ifndef HAVE_UPDWTMP
-static void updwtmp (const char *filename, const struct utmp *ut)
-{
-	int fd;
-
-	fd = open (filename, O_APPEND | O_WRONLY, 0);
-	if (fd >= 0) {
-		write (fd, (const char *) ut, sizeof (*ut));
-		close (fd);
-	}
-}
-#endif				/* ! HAVE_UPDWTMP */
-
-#ifdef USE_UTMPX
-#ifndef HAVE_UPDWTMPX
-static void updwtmpx (const char *filename, const struct utmpx *utx)
-{
-	int fd;
-
-	fd = open (filename, O_APPEND | O_WRONLY, 0);
-	if (fd >= 0) {
-		write (fd, (const char *) utx, sizeof (*utx));
-		close (fd);
-	}
-}
-#endif				/* ! HAVE_UPDWTMPX */
-#endif				/* ! USE_UTMPX */
-#endif				/* ! USE_PAM */
-
-
-#ifndef USE_UTMPX
-/*
- * prepare_utmp - prepare an utmp entry so that it can be logged in a
- *                utmp/wtmp file.
- *
- *	It accepts an utmp entry in input (ut) to return an entry with
- *	the right ut_id. This is typically an entry returned by
- *	get_current_utmp
- *	If ut is NULL, ut_id will be forged based on the line argument.
- *
- *	The ut_host field of the input structure may also be kept, and is
- *	used to define the ut_addr/ut_addr_v6 fields. (if these fields
- *	exist)
- *
- *	Other fields are discarded and filed with new values (if they
- *	exist).
- *
- *	The returned structure shall be freed by the caller.
- */
-/*@only@*/struct utmp *prepare_utmp (const char *name,
-                                     const char *line,
-                                     const char *host,
-                                     /*@null@*/const struct utmp *ut)
-{
-	struct timeval tv;
-	char *hostname = NULL;
-	struct utmp *utent;
-
-	assert (NULL != name);
-	assert (NULL != line);
-
-
-
-	if (   (NULL != host)
-	    && ('\0' != host[0])) {
-		hostname = (char *) xmalloc (strlen (host) + 1);
-		strcpy (hostname, host);
-#ifdef HAVE_STRUCT_UTMP_UT_HOST
-	} else if (   (NULL != ut)
-	           && ('\0' != ut->ut_host[0])) {
-		hostname = (char *) xmalloc (sizeof (ut->ut_host) + 1);
-		strncpy (hostname, ut->ut_host, sizeof (ut->ut_host));
-		hostname[sizeof (ut->ut_host)] = '\0';
-#endif				/* HAVE_STRUCT_UTMP_UT_HOST */
-	}
-
-	if (strncmp(line, "/dev/", 5) == 0) {
-		line += 5;
-	}
-
-
-	utent = (struct utmp *) xmalloc (sizeof (*utent));
-	memzero (utent, sizeof (*utent));
-
-
-
-#ifdef HAVE_STRUCT_UTMP_UT_TYPE
-	utent->ut_type = USER_PROCESS;
-#endif				/* HAVE_STRUCT_UTMP_UT_TYPE */
-	utent->ut_pid = getpid ();
-	strncpy (utent->ut_line, line,      sizeof (utent->ut_line) - 1);
-#ifdef HAVE_STRUCT_UTMP_UT_ID
-	if (NULL != ut) {
-		strncpy (utent->ut_id, ut->ut_id, sizeof (utent->ut_id));
-	} else {
-		/* XXX - assumes /dev/tty?? */
-		strncpy (utent->ut_id, line + 3, sizeof (utent->ut_id) - 1);
-	}
-#endif				/* HAVE_STRUCT_UTMP_UT_ID */
-#ifdef HAVE_STRUCT_UTMP_UT_NAME
-	strncpy (utent->ut_name, name,      sizeof (utent->ut_name));
-#endif				/* HAVE_STRUCT_UTMP_UT_NAME */
-#ifdef HAVE_STRUCT_UTMP_UT_USER
-	strncpy (utent->ut_user, name,      sizeof (utent->ut_user) - 1);
-#endif				/* HAVE_STRUCT_UTMP_UT_USER */
-	if (NULL != hostname) {
-		struct addrinfo *info = NULL;
-#ifdef HAVE_STRUCT_UTMP_UT_HOST
-		strncpy (utent->ut_host, hostname, sizeof (utent->ut_host) - 1);
-#endif				/* HAVE_STRUCT_UTMP_UT_HOST */
-#ifdef HAVE_STRUCT_UTMP_UT_SYSLEN
-		utent->ut_syslen = MIN (strlen (hostname),
-		                        sizeof (utent->ut_host));
-#endif				/* HAVE_STRUCT_UTMP_UT_SYSLEN */
-#if defined(HAVE_STRUCT_UTMP_UT_ADDR) || defined(HAVE_STRUCT_UTMP_UT_ADDR_V6)
-		if (getaddrinfo (hostname, NULL, NULL, &info) == 0) {
-			/* getaddrinfo might not be reliable.
-			 * Just try to log what may be useful.
-			 */
-			if (info->ai_family == AF_INET) {
-				struct sockaddr_in *sa =
-					(struct sockaddr_in *) info->ai_addr;
-#ifdef HAVE_STRUCT_UTMP_UT_ADDR
-				memcpy (&(utent->ut_addr),
-				        &(sa->sin_addr),
-				        MIN (sizeof (utent->ut_addr),
-				             sizeof (sa->sin_addr)));
-#endif				/* HAVE_STRUCT_UTMP_UT_ADDR */
-#ifdef HAVE_STRUCT_UTMP_UT_ADDR_V6
-				memcpy (utent->ut_addr_v6,
-				        &(sa->sin_addr),
-				        MIN (sizeof (utent->ut_addr_v6),
-				             sizeof (sa->sin_addr)));
-			} else if (info->ai_family == AF_INET6) {
-				struct sockaddr_in6 *sa =
-					(struct sockaddr_in6 *) info->ai_addr;
-				memcpy (utent->ut_addr_v6,
-				        &(sa->sin6_addr),
-				        MIN (sizeof (utent->ut_addr_v6),
-				             sizeof (sa->sin6_addr)));
-#endif				/* HAVE_STRUCT_UTMP_UT_ADDR_V6 */
-			}
-			freeaddrinfo (info);
-		}
-#endif		/* HAVE_STRUCT_UTMP_UT_ADDR || HAVE_STRUCT_UTMP_UT_ADDR_V6 */
-		free (hostname);
-	}
-	/* ut_exit is only for DEAD_PROCESS */
-	utent->ut_session = getsid (0);
-	if (gettimeofday (&tv, NULL) == 0) {
-#ifdef HAVE_STRUCT_UTMP_UT_TIME
-		utent->ut_time = tv.tv_sec;
-#endif				/* HAVE_STRUCT_UTMP_UT_TIME */
-#ifdef HAVE_STRUCT_UTMP_UT_XTIME
-		utent->ut_xtime = tv.tv_usec;
-#endif				/* HAVE_STRUCT_UTMP_UT_XTIME */
-#ifdef HAVE_STRUCT_UTMP_UT_TV
-		utent->ut_tv.tv_sec  = tv.tv_sec;
-		utent->ut_tv.tv_usec = tv.tv_usec;
-#endif				/* HAVE_STRUCT_UTMP_UT_TV */
-	}
-
-	return utent;
-}
-
-/*
- * setutmp - Update an entry in utmp and log an entry in wtmp
- *
- *	Return 1 on failure and 0 on success.
- */
-int setutmp (struct utmp *ut)
-{
-	int err = 0;
-
-	assert (NULL != ut);
-
-	setutent ();
-	if (pututline (ut) == NULL) {
-		err = 1;
-	}
-	endutent ();
-
-#ifndef USE_PAM
-	/* This is done by pam_lastlog */
-	updwtmp (_WTMP_FILE, ut);
-#endif				/* ! USE_PAM */
-
-	return err;
-}
-
-#else
-/*
- * prepare_utmpx - the UTMPX version for prepare_utmp
- */
-/*@only@*/struct utmpx *prepare_utmpx (const char *name,
-                                       const char *line,
-                                       const char *host,
-                                       /*@null@*/const struct utmpx *ut)
-{
-	struct timeval tv;
-	char *hostname = NULL;
-	struct utmpx *utxent;
-
-	assert (NULL != name);
-	assert (NULL != line);
-
-
-
-	if (   (NULL != host)
-	    && ('\0' != host[0])) {
-		hostname = (char *) xmalloc (strlen (host) + 1);
-		strcpy (hostname, host);
-#ifdef HAVE_STRUCT_UTMP_UT_HOST
-	} else if (   (NULL != ut)
-	           && (NULL != ut->ut_host)
-	           && ('\0' != ut->ut_host[0])) {
-		hostname = (char *) xmalloc (sizeof (ut->ut_host) + 1);
-		strncpy (hostname, ut->ut_host, sizeof (ut->ut_host));
-		hostname[sizeof (ut->ut_host)] = '\0';
-#endif				/* HAVE_STRUCT_UTMP_UT_TYPE */
-	}
-
-	if (strncmp(line, "/dev/", 5) == 0) {
-		line += 5;
-	}
-
-	utxent = (struct utmpx *) xmalloc (sizeof (*utxent));
-	memzero (utxent, sizeof (*utxent));
-
-
-
-	utxent->ut_type = USER_PROCESS;
-	utxent->ut_pid = getpid ();
-	strncpy (utxent->ut_line, line,      sizeof (utxent->ut_line));
-	/* existence of ut->ut_id is enforced by configure */
-	if (NULL != ut) {
-		strncpy (utxent->ut_id, ut->ut_id, sizeof (utxent->ut_id));
-	} else {
-		/* XXX - assumes /dev/tty?? */
-		strncpy (utxent->ut_id, line + 3, sizeof (utxent->ut_id));
-	}
-#ifdef HAVE_STRUCT_UTMPX_UT_NAME
-	strncpy (utxent->ut_name, name,      sizeof (utxent->ut_name));
-#endif				/* HAVE_STRUCT_UTMPX_UT_NAME */
-	strncpy (utxent->ut_user, name,      sizeof (utxent->ut_user));
-	if (NULL != hostname) {
-		struct addrinfo *info = NULL;
-#ifdef HAVE_STRUCT_UTMPX_UT_HOST
-		strncpy (utxent->ut_host, hostname, sizeof (utxent->ut_host));
-#endif				/* HAVE_STRUCT_UTMPX_UT_HOST */
-#ifdef HAVE_STRUCT_UTMPX_UT_SYSLEN
-		utxent->ut_syslen = MIN (strlen (hostname),
-		                         sizeof (utxent->ut_host));
-#endif				/* HAVE_STRUCT_UTMPX_UT_SYSLEN */
-#if defined(HAVE_STRUCT_UTMPX_UT_ADDR) || defined(HAVE_STRUCT_UTMPX_UT_ADDR_V6)
-		if (getaddrinfo (hostname, NULL, NULL, &info) == 0) {
-			/* getaddrinfo might not be reliable.
-			 * Just try to log what may be useful.
-			 */
-			if (info->ai_family == AF_INET) {
-				struct sockaddr_in *sa =
-					(struct sockaddr_in *) info->ai_addr;
-#ifdef HAVE_STRUCT_UTMPX_UT_ADDR
-				memcpy (&utxent->ut_addr,
-				        &(sa->sin_addr),
-				        MIN (sizeof (utxent->ut_addr),
-				             sizeof (sa->sin_addr)));
-#endif				/* HAVE_STRUCT_UTMPX_UT_ADDR */
-#ifdef HAVE_STRUCT_UTMPX_UT_ADDR_V6
-				memcpy (utxent->ut_addr_v6,
-				        &(sa->sin_addr),
-				        MIN (sizeof (utxent->ut_addr_v6),
-				             sizeof (sa->sin_addr)));
-			} else if (info->ai_family == AF_INET6) {
-				struct sockaddr_in6 *sa =
-					(struct sockaddr_in6 *) info->ai_addr;
-				memcpy (utxent->ut_addr_v6,
-				        &(sa->sin6_addr),
-				        MIN (sizeof (utxent->ut_addr_v6),
-				             sizeof (sa->sin6_addr)));
-#endif				/* HAVE_STRUCT_UTMPX_UT_ADDR_V6 */
-			}
-			freeaddrinfo (info);
-		}
-#endif		/* HAVE_STRUCT_UTMPX_UT_ADDR || HAVE_STRUCT_UTMPX_UT_ADDR_V6 */
-		free (hostname);
-	}
-	/* ut_exit is only for DEAD_PROCESS */
-	utxent->ut_session = getsid (0);
-	if (gettimeofday (&tv, NULL) == 0) {
-#ifdef HAVE_STRUCT_UTMPX_UT_TIME
-		utxent->ut_time = tv.tv_sec;
-#endif				/* HAVE_STRUCT_UTMPX_UT_TIME */
-#ifdef HAVE_STRUCT_UTMPX_UT_XTIME
-		utxent->ut_xtime = tv.tv_usec;
-#endif				/* HAVE_STRUCT_UTMPX_UT_XTIME */
-		utxent->ut_tv.tv_sec  = tv.tv_sec;
-		utxent->ut_tv.tv_usec = tv.tv_usec;
-	}
-
-	return utxent;
-}
-
-/*
- * setutmpx - the UTMPX version for setutmp
- */
-int setutmpx (struct utmpx *utx)
-{
-	int err = 0;
-
-	assert (NULL != utx);
-
-	setutxent ();
-	if (pututxline (utx) == NULL) {
-		err = 1;
-	}
-	endutxent ();
-
-#ifndef USE_PAM
-	/* This is done by pam_lastlog */
-	updwtmpx (_WTMP_FILE "x", utx);
-#endif				/* ! USE_PAM */
-
-	return err;
-}
-#endif				/* USE_UTMPX */
-
diff --git a/libmisc/yesno.c b/libmisc/yesno.c
deleted file mode 100644
index cfbe6ec..0000000
--- a/libmisc/yesno.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1992 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 2007 - 2008, Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-/*
- * Common code for yes/no prompting
- *
- * Used by pwck.c and grpck.c
- */
-
-#include <config.h>
-
-#ident "$Id$"
-
-#include <stdio.h>
-#include "prototypes.h"
-
-/*
- * yes_or_no - get answer to question from the user
- *
- *	It returns false if no.
- *
- *	If the read_only flag is set, it will print No, and will return
- *	false.
- */
-bool yes_or_no (bool read_only)
-{
-	char buf[80];
-
-	/*
-	 * In read-only mode all questions are answered "no".
-	 */
-	if (read_only) {
-		(void) puts (_("No"));
-		return false;
-	}
-
-	/*
-	 * Typically, there's a prompt on stdout, sometimes unflushed.
-	 */
-	(void) fflush (stdout);
-
-	/*
-	 * Get a line and see what the first character is.
-	 */
-	/* TODO: use gettext */
-	if (fgets (buf, (int) sizeof buf, stdin) == buf) {
-		return buf[0] == 'y' || buf[0] == 'Y';
-	}
-
-	return false;
-}
-
diff --git a/libsubid/Makefile.am b/libsubid/Makefile.am
index 09ec341..b6488e7 100644
--- a/libsubid/Makefile.am
+++ b/libsubid/Makefile.am
@@ -8,7 +8,6 @@ MISCLIBS = \
 	$(LIBAUDIT) \
 	$(LIBSELINUX) \
 	$(LIBSEMANAGE) \
-	$(LIBCRACK) \
 	$(LIBCRYPT_NOPAM) \
 	$(LIBSKEY) \
 	$(LIBMD) \
@@ -21,10 +20,8 @@ MISCLIBS = \
 
 libsubid_la_LIBADD = \
 	$(top_builddir)/lib/libshadow.la \
-	$(top_builddir)/libmisc/libmisc.la \
 	$(MISCLIBS) -ldl
 
 AM_CPPFLAGS = \
 	-I${top_srcdir}/lib \
-	-I${top_srcdir}/libmisc \
 	-DLOCALEDIR=\"$(datadir)/locale\"
diff --git a/libsubid/Makefile.in b/libsubid/Makefile.in
index ed8dc94..1cc025d 100644
--- a/libsubid/Makefile.in
+++ b/libsubid/Makefile.in
@@ -143,9 +143,9 @@ am__DEPENDENCIES_2 = $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
-	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
+	$(am__DEPENDENCIES_1)
 libsubid_la_DEPENDENCIES = $(top_builddir)/lib/libshadow.la \
-	$(top_builddir)/libmisc/libmisc.la $(am__DEPENDENCIES_2)
+	$(am__DEPENDENCIES_2)
 am_libsubid_la_OBJECTS = api.lo
 libsubid_la_OBJECTS = $(am_libsubid_la_OBJECTS)
 AM_V_lt = $(am__v_lt_@AM_V@)
@@ -229,6 +229,8 @@ AWK = @AWK@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
+CMOCKA_CFLAGS = @CMOCKA_CFLAGS@
+CMOCKA_LIBS = @CMOCKA_LIBS@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CSCOPE = @CSCOPE@
@@ -247,6 +249,7 @@ EGREP = @EGREP@
 ETAGS = @ETAGS@
 EXEEXT = @EXEEXT@
 FGREP = @FGREP@
+FILECMD = @FILECMD@
 GETTEXT_MACRO_VERSION = @GETTEXT_MACRO_VERSION@
 GMSGFMT = @GMSGFMT@
 GMSGFMT_015 = @GMSGFMT_015@
@@ -262,9 +265,15 @@ INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
 LD = @LD@
 LDFLAGS = @LDFLAGS@
 LIBACL = @LIBACL@
+LIBADD_DL = @LIBADD_DL@
+LIBADD_DLD_LINK = @LIBADD_DLD_LINK@
+LIBADD_DLOPEN = @LIBADD_DLOPEN@
+LIBADD_SHL_LOAD = @LIBADD_SHL_LOAD@
 LIBATTR = @LIBATTR@
 LIBAUDIT = @LIBAUDIT@
-LIBCRACK = @LIBCRACK@
+LIBBSD = @LIBBSD@
+LIBBSD_CFLAGS = @LIBBSD_CFLAGS@
+LIBBSD_LIBS = @LIBBSD_LIBS@
 LIBCRYPT = @LIBCRYPT@
 LIBECONF = @LIBECONF@
 LIBICONV = @LIBICONV@
@@ -280,6 +289,7 @@ LIBSUBID_ABI = @LIBSUBID_ABI@
 LIBSUBID_ABI_MAJOR = @LIBSUBID_ABI_MAJOR@
 LIBSUBID_ABI_MICRO = @LIBSUBID_ABI_MICRO@
 LIBSUBID_ABI_MINOR = @LIBSUBID_ABI_MINOR@
+LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
@@ -288,6 +298,8 @@ LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
 LTLIBOBJS = @LTLIBOBJS@
+LT_DLLOADERS = @LT_DLLOADERS@
+LT_DLPREOPEN = @LT_DLPREOPEN@
 LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
 MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
@@ -310,6 +322,9 @@ PACKAGE_TARNAME = @PACKAGE_TARNAME@
 PACKAGE_URL = @PACKAGE_URL@
 PACKAGE_VERSION = @PACKAGE_VERSION@
 PATH_SEPARATOR = @PATH_SEPARATOR@
+PKG_CONFIG = @PKG_CONFIG@
+PKG_CONFIG_LIBDIR = @PKG_CONFIG_LIBDIR@
+PKG_CONFIG_PATH = @PKG_CONFIG_PATH@
 POSUB = @POSUB@
 RANLIB = @RANLIB@
 SED = @SED@
@@ -389,7 +404,6 @@ MISCLIBS = \
 	$(LIBAUDIT) \
 	$(LIBSELINUX) \
 	$(LIBSEMANAGE) \
-	$(LIBCRACK) \
 	$(LIBCRYPT_NOPAM) \
 	$(LIBSKEY) \
 	$(LIBMD) \
@@ -402,12 +416,10 @@ MISCLIBS = \
 
 libsubid_la_LIBADD = \
 	$(top_builddir)/lib/libshadow.la \
-	$(top_builddir)/libmisc/libmisc.la \
 	$(MISCLIBS) -ldl
 
 AM_CPPFLAGS = \
 	-I${top_srcdir}/lib \
-	-I${top_srcdir}/libmisc \
 	-DLOCALEDIR=\"$(datadir)/locale\"
 
 all: all-am
@@ -499,22 +511,25 @@ $(am__depfiles_remade):
 am--depfiles: $(am__depfiles_remade)
 
 .c.o:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.o$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ $<
 
 .c.obj:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.obj$$||'`;\
+@am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ `$(CYGPATH_W) '$<'` &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Po
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(COMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
 
 .c.lo:
-@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
-@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_TRUE@	$(AM_V_CC)depbase=`echo $@ | sed 's|[^/]*$$|$(DEPDIR)/&|;s|\.lo$$||'`;\
+@am__fastdepCC_TRUE@	$(LTCOMPILE) -MT $@ -MD -MP -MF $$depbase.Tpo -c -o $@ $< &&\
+@am__fastdepCC_TRUE@	$(am__mv) $$depbase.Tpo $$depbase.Plo
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(AM_V_CC@am__nodep@)$(LTCOMPILE) -c -o $@ $<
diff --git a/libsubid/api.c b/libsubid/api.c
index 00da74f..65d20ab 100644
--- a/libsubid/api.c
+++ b/libsubid/api.c
@@ -66,12 +66,12 @@ int get_subid_owner(unsigned long id, enum subid_type id_type, uid_t **owner)
 
 int subid_get_uid_owners(uid_t uid, uid_t **owner)
 {
-	return get_subid_owner((unsigned long)uid, ID_TYPE_UID, owner);
+	return get_subid_owner(uid, ID_TYPE_UID, owner);
 }
 
 int subid_get_gid_owners(gid_t gid, uid_t **owner)
 {
-	return get_subid_owner((unsigned long)gid, ID_TYPE_GID, owner);
+	return get_subid_owner(gid, ID_TYPE_GID, owner);
 }
 
 static