Adding upstream version 1:4.17.4.

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

AUTHORS.md

@@ -0,0 +1,98 @@
+Thanks to at least the following people for sending patches, bug
+reports and various comments. This list may be incomplete, I received
+a lot of mail...
+
+# Maintainers
+* Marek Michałkiewicz <marekm72@gmail.com> (1995-2000)
+* Tomasz Kłoczko <kloczek@pld.org.pl> (2000-2007)
+* Nicolas François <nicolas.francois@centraliens.net> (2007-2014)
+* Serge E. Hallyn <serge@hallyn.com> (2014-now)
+* Christian Brauner <christian@brauner.io> (2019-now)
+* Iker Pedrosa <ipedrosa@redhat.com> (2022-now)
+* Alejandro Colomar <alx@kernel.org> (2023-now) (4.14 stable)
+
+To verify signatures on releases, use the following keys under keys/ :
+
+* Serge Hallyn: keys/66D0387DB85D320F8408166DB175CFA98F192AF2.asc
+* Christian Brauner: keys/4880B8C9BD0E5106FC070F4F7B3C391EFEA93624.asc
+* Iker Pedrosa: keys/4E80EF49C7987B6DE2F81F5005079C6C3A653E57.asc
+* Alejandro Colomar: keys/A9348594CE31283A826FBDD8D57633D441E25BB5.asc
+
+# Authors and contributors
+* Adam Rudnicki <adam@v-lo.krakow.pl>
+* Alan Curry <pacman@tardis.mars.net>
+* Aleksa Sarai <cyphar@cyphar.com>
+* Alexander O. Yuriev <alex@bach.cis.temple.edu>
+* Algis Rudys <arudys@rice.edu>
+* Andreas Jaeger <aj@arthur.rhein-neckar.de>
+* Andy Zaugg <andy.zaugg@gmail.com>
+* Aniello Del Sorbo <anidel@edu-gw.dia.unisa.it>
+* Anton Gluck <gluc@midway.uchicago.edu>
+* Arkadiusz Miskiewicz <misiek@pld.org.pl>
+* Ben Collins <bcollins@debian.org>
+* Brian R. Gaeke <brg@dgate.org>
+* Calle Karlsson <ckn@kash.se>
+* Chip Rosenthal <chip@unicom.com>
+* Chris Evans <lady0110@sable.ox.ac.uk>
+* Chris Lamb <chris@chris-lamb.co.uk>
+* Cristian Gafton <gafton@sorosis.ro>
+* Dan Walsh <dwalsh@redhat.com>
+* Darcy Boese <possum@chardonnay.niagara.com>
+* Dave Hagewood <admin@arrowweb.com>
+* David A. Holland <dholland@hcs.harvard.edu>
+* David Frey <David.Frey@lugs.ch>
+* Ed Carp <ecarp@netcom.com>
+* Ed Neville <ed@s5h.net>
+* Eric W. Biederman" <ebiederm@xmission.com>
+* Floody <flood@evcom.net>
+* Frank Denis <j@4u.net>
+* George Kraft IV <gk4@us.ibm.com>
+* Greg Mortensen <loki@world.std.com>
+* Guido van Rooij
+* Guy Maor <maor@debian.org>
+* Hrvoje Dogan <hdogan@bjesomar.srce.hr>
+* Jakub Hrozek <jhrozek@redhat.com>
+* Janos Farkas <chexum@bankinf.banki.hu>
+* Jason Franklin <jason.franklin@quoininc.com>
+* Jay Soffian <jay@lw.net>
+* Jesse Thilo <Jesse.Thilo@pobox.com>
+* Joey Hess <joey@kite.ml.org>
+* John Adelsberger <jja@umr.edu>
+* Jonathan Hankins <jhankins@mailserv.homewood.k12.al.us>
+* Jon Lewis <jlewis@lewis.org>
+* Joshua Cowan <jcowan@hermit.reslife.okstate.edu>
+* Judd Bourgeois <shagboy@bluesky.net>
+* Juergen Heinzl <unicorn@noris.net>
+* Juha Virtanen <jiivee@iki.fi>
+* Julian Pidancet <julian.pidancet@gmail.com>
+* Julianne Frances Haugh <julie78787@gmail.com>
+* Leonard N. Zubkoff <lnz@dandelion.com>
+* Luca Berra <bluca@www.polimi.it>
+* Lukáš Kuklínek <lkukline@redhat.com>
+* Lutz Schwalowsky <schwalow@mineralogie.uni-hamburg.de>
+* Marc Ewing <marc@redhat.com>
+* Martin Bene <mb@sime.com>
+* Martin Mares <mj@gts.cz>
+* Michael Meskes <meskes@topsystem.de>
+* Michael Talbot-Wilson <mike@calypso.bns.com.au>
+* Michael Vetter <jubalh@iodoru.org>
+* Mike Frysinger <vapier@gentoo.org>
+* Mike Pakovic <mpakovic@users.southeast.net>
+* Nicolas François <nicolas.francois@centraliens.net>
+* Nikos Mavroyanopoulos <nmav@i-net.paiko.gr>
+* Pavel Machek <pavel@bug.ucw.cz>
+* Peter Vrabec <pvrabec@redhat.com>
+* Phillip Street
+* Rafał Maszkowski <rzm@icm.edu.pl>
+* Rani Chouha <ranibey@smartec.com>
+* Sami Kerola <kerolasa@rocketmail.com>
+* Scott Garman <scott.a.garman@intel.com>
+* Sebastian Rick Rijkers <srrijkers@gmail.com>
+* Seraphim Mellos <mellos@ceid.upatras.gr>
+* Shane Watts <shane@nexus.mlckew.edu.au>
+* Steve M. Robbins <steve@nyongwa.montreal.qc.ca>
+* Thorsten Kukuk <kukuk@suse.de>
+* Tim Hockin <thockin@eagle.ais.net>
+* Timo Karjalainen <timok@iki.fi>
+* Ulisses Alonso Camaro <ulisses@pusa.eleinf.uv.es>
+* Werner Fink <werner@suse.de>

COPYING

@@ -0,0 +1,41 @@
+SPDX-License-Identifier: BSD-3-Clause
+
+All files under this project either
+
+1. fall under the BSD 3 clause license (by default).
+
+2. carry an SPDX header declaring what license applies.
+
+or
+
+3. list a full custom license
+
+This software is originally
+
+ * Copyright (c) 1989 - 1994, Julianne Frances Haugh
+
+ * All rights reserved.
+ *
+ * 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.

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+distclean-tags:
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+	  echo 'ERROR: trying to run $@ with an empty' \
+	       '$$(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
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+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
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+	        fi ; \
+	        $(distuninstallcheck_listfiles) ; \
+	        exit 1; } >&2
+distcleancheck: distclean
+	@if test '$(srcdir)' = . ; then \
+	  echo "ERROR: distcleancheck can only run from a VPATH build" ; \
+	  exit 1 ; \
+	fi
+	@test `$(distcleancheck_listfiles) | wc -l` -eq 0 \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	rm -rf $(distdir)/tests
+	mv $(distdir)/realtests $(distdir)/tests
+	rm -rf $(distdir)/tests/unit $(distdir)/tests/Makefile*
+	mv $(distdir)/realunittest $(distdir)/tests/unit
+
+# 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:

README

@@ -0,0 +1,47 @@
+# shadow-utils
+
+## Introduction
+The shadow-utils package includes the necessary programs for
+converting UNIX password files to the shadow password format, plus
+programs for managing user and group accounts. The pwconv command
+converts passwords to the shadow password format. The pwunconv command
+unconverts shadow passwords and generates a passwd file (a standard
+UNIX password file). The pwck command checks the integrity of password
+and shadow files. The lastlog command prints out the last login times
+for all users. The useradd, userdel, and usermod commands are used for
+managing user accounts. The groupadd, groupdel, and groupmod commands
+are used for managing group accounts.
+
+## Sites
+* [Homepage](https://github.com/shadow-maint/shadow)
+* [Issue tracker](https://github.com/shadow-maint/shadow/issues)
+* [Releases](https://github.com/shadow-maint/shadow/releases)
+
+## Code
+
+The main development branch is at [https://github.com/shadow-maint/shadow.git](https://github.com/shadow-maint/shadow)
+
+See [STABLE.md](https://github.com/shadow-maint/shadow/blob/master/STABLE.md) for a list of supported stable branches.
+
+## Contacts
+There are several ways to contact us:
+* [the general discussion mailing list](
+  https://alioth-lists.debian.net/mailman/listinfo/pkg-shadow-devel)
+* the #shadow IRC channel on libera.chat:
+  * irc://irc.libera.chat/shadow
+
+### Mailing archives
+* [the general discussion mailing list archive](
+  https://alioth-lists.debian.net/pipermail/pkg-shadow-devel/)
+* [the commit mailing list archive](
+  https://alioth-lists-archive.debian.net/pipermail/pkg-shadow-commits/),
+  only used for historical purposes
+
+## Contributions
+
+Contributions are welcome. Follow the
+[guidelines](doc/contributions/introduction.md) before posting any patches.
+
+## Authors and maintainers
+Authors and maintainers are listed in [AUTHORS.md](
+https://github.com/shadow-maint/shadow/blob/master/AUTHORS.md).

acinclude.m4

@@ -0,0 +1,54 @@
+# Checks the location of the XML Catalog
+# Usage:
+#   JH_PATH_XML_CATALOG([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# Defines XMLCATALOG and XML_CATALOG_FILE substitutions
+AC_DEFUN([JH_PATH_XML_CATALOG],
+[
+  # check for the presence of the XML catalog
+  AC_ARG_WITH([xml-catalog],
+              AS_HELP_STRING([--with-xml-catalog=CATALOG],
+                             [path to xml catalog to use]),,
+              [with_xml_catalog=/etc/xml/catalog])
+  jh_found_xmlcatalog=true
+  XML_CATALOG_FILE="$with_xml_catalog"
+  AC_SUBST([XML_CATALOG_FILE])
+  AC_MSG_CHECKING([for XML catalog ($XML_CATALOG_FILE)])
+  if test -f "$XML_CATALOG_FILE"; then
+    AC_MSG_RESULT([found])
+  else
+    jh_found_xmlcatalog=false
+    AC_MSG_RESULT([not found])
+  fi
+
+  # check for the xmlcatalog program
+  AC_PATH_PROG(XMLCATALOG, xmlcatalog, no)
+  if test "x$XMLCATALOG" = xno; then
+    jh_found_xmlcatalog=false
+  fi
+
+  if $jh_found_xmlcatalog; then
+    ifelse([$1],,[:],[$1])
+  else
+    ifelse([$2],,[AC_MSG_ERROR([could not find XML catalog])],[$2])
+  fi
+])
+
+# Checks if a particular URI appears in the XML catalog
+# Usage:
+#   JH_CHECK_XML_CATALOG(URI, [FRIENDLY-NAME], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+AC_DEFUN([JH_CHECK_XML_CATALOG],
+[
+  AC_REQUIRE([JH_PATH_XML_CATALOG],[JH_PATH_XML_CATALOG(,[:])])dnl
+  AC_MSG_CHECKING([for ifelse([$2],,[$1],[$2]) in XML catalog])
+  if $jh_found_xmlcatalog && \
+     AC_RUN_LOG([$XMLCATALOG --noout "$XML_CATALOG_FILE" "$1" >&2]); then
+    AC_MSG_RESULT([found])
+    ifelse([$3],,,[$3
+])dnl
+  else
+    AC_MSG_RESULT([not found])
+    ifelse([$4],,
+       [AC_MSG_ERROR([could not find ifelse([$2],,[$1],[$2]) in XML catalog])],
+       [$4])
+  fi
+])

compile

@@ -0,0 +1,348 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN* | MSYS*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/* | msys/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe | \
+  icl | *[/\\]icl | icl.exe | *[/\\]icl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

config.h.in

@@ -0,0 +1,470 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if account management tools should be installed setuid and
+   authenticate the callers */
+#undef ACCT_TOOLS_SETUID
+
+/* Define to support lastlog. */
+#undef ENABLE_LASTLOG
+
+/* Define to manage session support with logind. */
+#undef ENABLE_LOGIND
+
+/* Define to 1 if translation of program messages to the user's native
+   language is requested. */
+#undef ENABLE_NLS
+
+/* Define to support the subordinate IDs. */
+#undef ENABLE_SUBIDS
+
+/* Path for faillog file. */
+#undef FAILLOG_FILE
+
+/* max group name length */
+#undef GROUP_NAME_MAX_LENGTH
+
+/* Define to 1 if you have the declaration of 'pam_fail_delay' */
+#undef HAS_PAM_FAIL_DELAY
+
+/* Defined to 1 if you have the declaration of 'secure_getenv' */
+#undef HAS_SECURE_GETENV
+
+/* Define to 1 if you have the <acl/libacl.h> header file. */
+#undef HAVE_ACL_LIBACL_H
+
+/* Define to 1 if you have the `arc4random_buf' function. */
+#undef HAVE_ARC4RANDOM_BUF
+
+/* Define to 1 if you have the <attr/error_context.h> header file. */
+#undef HAVE_ATTR_ERROR_CONTEXT_H
+
+/* Define to 1 if you have the <attr/libattr.h> header file. */
+#undef HAVE_ATTR_LIBATTR_H
+
+/* Define to 1 if you have the Mac OS X function CFLocaleCopyCurrent in the
+   CoreFoundation framework. */
+#undef HAVE_CFLOCALECOPYCURRENT
+
+/* Define to 1 if you have the Mac OS X function CFPreferencesCopyAppValue in
+   the CoreFoundation framework. */
+#undef HAVE_CFPREFERENCESCOPYAPPVALUE
+
+/* Define if the GNU dcgettext() function is already present or preinstalled.
+   */
+#undef HAVE_DCGETTEXT
+
+/* Define to 1 if you have the declaration of `cygwin_conv_path', and to 0 if
+   you don't. */
+#undef HAVE_DECL_CYGWIN_CONV_PATH
+
+/* Define to 1 if you have the declaration of `PAM_DATA_SILENT', and to 0 if
+   you don't. */
+#undef HAVE_DECL_PAM_DATA_SILENT
+
+/* Define to 1 if you have the declaration of `PAM_DELETE_CRED', and to 0 if
+   you don't. */
+#undef HAVE_DECL_PAM_DELETE_CRED
+
+/* Define to 1 if you have the declaration of `PAM_ESTABLISH_CRED', and to 0
+   if you don't. */
+#undef HAVE_DECL_PAM_ESTABLISH_CRED
+
+/* Define to 1 if you have the declaration of `PAM_NEW_AUTHTOK_REQD', and to 0
+   if you don't. */
+#undef HAVE_DECL_PAM_NEW_AUTHTOK_REQD
+
+/* Define if you have the GNU dld library. */
+#undef HAVE_DLD
+
+/* Define to 1 if you have the `dlerror' function. */
+#undef HAVE_DLERROR
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define if you have the _dyld_func_lookup function. */
+#undef HAVE_DYLD
+
+/* Define to 1 if you have the `explicit_bzero' function. */
+#undef HAVE_EXPLICIT_BZERO
+
+/* Defined to 1 if you have the declaration of 'fgetpwent_r' */
+#undef HAVE_FGETPWENT_R
+
+/* Define to 1 if you have the `futimes' function. */
+#undef HAVE_FUTIMES
+
+/* Define to 1 if you have the `getentropy' function. */
+#undef HAVE_GETENTROPY
+
+/* Define to 1 if you have the `getrandom' function. */
+#undef HAVE_GETRANDOM
+
+/* Define to 1 if you have the `getspnam' function. */
+#undef HAVE_GETSPNAM
+
+/* Define to 1 if you have the `getspnam_r' function. */
+#undef HAVE_GETSPNAM_R
+
+/* Define if the GNU gettext() function is already present or preinstalled. */
+#undef HAVE_GETTEXT
+
+/* Define to 1 if you have the `getusershell' function. */
+#undef HAVE_GETUSERSHELL
+
+/* Define if you have the iconv() function and it works. */
+#undef HAVE_ICONV
+
+/* Define to 1 if you have the `innetgr' function. */
+#undef HAVE_INNETGR
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the `lckpwdf' function. */
+#undef HAVE_LCKPWDF
+
+/* Define if you have the libdl library or equivalent. */
+#undef HAVE_LIBDL
+
+/* Define if libdlloader will be built on this platform */
+#undef HAVE_LIBDLLOADER
+
+/* Define to 1 if you have the <linux/btrfs_tree.h> header file. */
+#undef HAVE_LINUX_BTRFS_TREE_H
+
+/* Define to 1 if you have the <linux/magic.h> header file. */
+#undef HAVE_LINUX_MAGIC_H
+
+/* Define if struct lastlog has ll_host */
+#undef HAVE_LL_HOST
+
+/* Define to 1 if you have the `lutimes' function. */
+#undef HAVE_LUTIMES
+
+/* Define to 1 if you have the `memset_explicit' function. */
+#undef HAVE_MEMSET_EXPLICIT
+
+/* Define to 1 if you have the <minix/config.h> header file. */
+#undef HAVE_MINIX_CONFIG_H
+
+/* Define to 1 if you have the `putgrent' function. */
+#undef HAVE_PUTGRENT
+
+/* Define to 1 if you have the `putpwent' function. */
+#undef HAVE_PUTPWENT
+
+/* Define to 1 if you have the `putspent' function. */
+#undef HAVE_PUTSPENT
+
+/* Define to 1 if you have the <readpassphrase.h> header file. */
+#undef HAVE_READPASSPHRASE_H
+
+/* Define to 1 if you have the `rpmatch' function. */
+#undef HAVE_RPMATCH
+
+/* Define to 1 if you have the <security/openpam.h> header file. */
+#undef HAVE_SECURITY_OPENPAM_H
+
+/* Define to 1 if you have the <security/pam_misc.h> header file. */
+#undef HAVE_SECURITY_PAM_MISC_H
+
+/* Define to 1 if you have the <selinux/selinux.h> header file. */
+#undef HAVE_SELINUX_SELINUX_H
+
+/* Define to 1 if you have the <semanage/semanage.h> header file. */
+#undef HAVE_SEMANAGE_SEMANAGE_H
+
+/* Define to 1 if you have the `sgetgrent' function. */
+#undef HAVE_SGETGRENT
+
+/* Define to 1 if you have the `sgetpwent' function. */
+#undef HAVE_SGETPWENT
+
+/* Define to 1 if you have the `sgetspent' function. */
+#undef HAVE_SGETSPENT
+
+/* Define if you have the shl_load function. */
+#undef HAVE_SHL_LOAD
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `stpecpy' function. */
+#undef HAVE_STPECPY
+
+/* Define to 1 if you have the `stpeprintf' function. */
+#undef HAVE_STPEPRINTF
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if `ut_addr' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_ADDR
+
+/* Define to 1 if `ut_addr_v6' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_ADDR_V6
+
+/* Define to 1 if `ut_host' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_HOST
+
+/* Define to 1 if `ut_name' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_NAME
+
+/* Define to 1 if `ut_syslen' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_SYSLEN
+
+/* Define to 1 if `ut_time' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_TIME
+
+/* Define to 1 if `ut_xtime' is a member of `struct utmpx'. */
+#undef HAVE_STRUCT_UTMPX_UT_XTIME
+
+/* Define to 1 if you have the <sys/statfs.h> header file. */
+#undef HAVE_SYS_STATFS_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <tcb.h> header file. */
+#undef HAVE_TCB_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to 1 if you have the `updwtmpx' function. */
+#undef HAVE_UPDWTMPX
+
+/* Define to 1 if you have the <utime.h> header file. */
+#undef HAVE_UTIME_H
+
+/* Define to 1 if `utime(file, NULL)' sets file's timestamp to the present. */
+#undef HAVE_UTIME_NULL
+
+/* Define to support vendor settings. */
+#undef HAVE_VENDORDIR
+
+/* Define to 1 if you have the <wchar.h> header file. */
+#undef HAVE_WCHAR_H
+
+/* Path for lastlog file. */
+#undef LASTLOG_FILE
+
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#undef LT_OBJDIR
+
+/* Location of system mail spool directory. */
+#undef MAIL_SPOOL_DIR
+
+/* Name of user's mail spool file if stored in user's home directory. */
+#undef MAIL_SPOOL_FILE
+
+/* Name of package */
+#undef PACKAGE
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Path to passwd program. */
+#undef PASSWD_PROGRAM
+
+/* Define to support the shadow group file. */
+#undef SHADOWGRP
+
+/* PAM conversation to use */
+#undef SHADOW_PAM_CONVERSATION
+
+/* The default shell. */
+#undef SHELL
+
+/* The size of `gid_t', as computed by sizeof. */
+#undef SIZEOF_GID_T
+
+/* The size of `uid_t', as computed by sizeof. */
+#undef SIZEOF_UID_T
+
+/* Define to support S/Key logins. */
+#undef SKEY
+
+/* Define to support newer BSD S/Key API */
+#undef SKEY_BSD_STYLE
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
+#undef STDC_HEADERS
+
+/* Define to support /etc/suauth su access control. */
+#undef SU_ACCESS
+
+/* Define to allow the bcrypt password encryption algorithm */
+#undef USE_BCRYPT
+
+/* Define to support flushing of nscd caches */
+#undef USE_NSCD
+
+/* Define to support Pluggable Authentication Modules */
+#undef USE_PAM
+
+/* Define to allow the SHA256 and SHA512 password encryption algorithms */
+#undef USE_SHA_CRYPT
+
+/* Define to support flushing of sssd caches */
+#undef USE_SSSD
+
+/* Enable extensions on AIX 3, Interix.  */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS.  */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris.  */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them.  */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+   with -lxnet on HP-UX 11.11.  */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+   This macro does not affect the system headers' behavior.
+   A future release of Autoconf may stop defining this macro.  */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+   Enable NetBSD compatibility extensions on Minix.  */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+   Oddly enough, this does nothing on OpenBSD.  */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior.  */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris.  */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014.  */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014.  */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015.  */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015.  */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015.  */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010.  */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009.  */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop.  */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions.  Define to 500 only if necessary
+   to make mbstate_t available.  */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+
+
+/* Define to allow the yescrypt password encryption algorithm */
+#undef USE_YESCRYPT
+
+/* Directory for distribution provided configuration files */
+#undef VENDORDIR
+
+/* Version number of package */
+#undef VERSION
+
+/* Build shadow with ACL support */
+#undef WITH_ACL
+
+/* Build shadow with Extended Attributes support */
+#undef WITH_ATTR
+
+/* Define if you want to enable Audit messages */
+#undef WITH_AUDIT
+
+/* Build shadow with BtrFS support */
+#undef WITH_BTRFS
+
+/* Build shadow without libbsd support */
+#undef WITH_LIBBSD
+
+/* Build shadow with SELinux support */
+#undef WITH_SELINUX
+
+/* Build with su */
+#undef WITH_SU
+
+/* Build shadow with tcb support (incomplete) */
+#undef WITH_TCB
+
+/* Number of bits in a file offset, on hosts where this is settable. */
+#undef _FILE_OFFSET_BITS
+
+/* Define for large files, on AIX-style hosts. */
+#undef _LARGE_FILES
+
+/* Path for wtmp file. */
+#undef _WTMP_FILE

config.rpath

@@ -0,0 +1,690 @@
+#! /bin/sh
+# Output a system dependent set of variables, describing how to set the
+# run time search path of shared libraries in an executable.
+#
+#   Copyright 1996-2014 Free Software Foundation, Inc.
+#   Taken from GNU libtool, 2001
+#   Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
+#
+#   This file is free software; the Free Software Foundation gives
+#   unlimited permission to copy and/or distribute it, with or without
+#   modifications, as long as this notice is preserved.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+# The environment variables CC, GCC, LDFLAGS, LD, with_gnu_ld
+# should be set by the caller.
+#
+# The set of defined variables is at the end of this script.
+
+# Known limitations:
+# - On IRIX 6.5 with CC="cc", the run time search patch must not be longer
+#   than 256 bytes, otherwise the compiler driver will dump core. The only
+#   known workaround is to choose shorter directory names for the build
+#   directory and/or the installation directory.
+
+# All known linkers require a '.a' archive for static linking (except MSVC,
+# which needs '.lib').
+libext=a
+shrext=.so
+
+host="$1"
+host_cpu=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
+host_vendor=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
+host_os=`echo "$host" | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
+
+# Code taken from libtool.m4's _LT_CC_BASENAME.
+
+for cc_temp in $CC""; do
+  case $cc_temp in
+    compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
+    distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
+    \-*) ;;
+    *) break;;
+  esac
+done
+cc_basename=`echo "$cc_temp" | sed -e 's%^.*/%%'`
+
+# Code taken from libtool.m4's _LT_COMPILER_PIC.
+
+wl=
+if test "$GCC" = yes; then
+  wl='-Wl,'
+else
+  case "$host_os" in
+    aix*)
+      wl='-Wl,'
+      ;;
+    mingw* | cygwin* | pw32* | os2* | cegcc*)
+      ;;
+    hpux9* | hpux10* | hpux11*)
+      wl='-Wl,'
+      ;;
+    irix5* | irix6* | nonstopux*)
+      wl='-Wl,'
+      ;;
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
+      case $cc_basename in
+        ecc*)
+          wl='-Wl,'
+          ;;
+        icc* | ifort*)
+          wl='-Wl,'
+          ;;
+        lf95*)
+          wl='-Wl,'
+          ;;
+        nagfor*)
+          wl='-Wl,-Wl,,'
+          ;;
+        pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
+          wl='-Wl,'
+          ;;
+        ccc*)
+          wl='-Wl,'
+          ;;
+        xl* | bgxl* | bgf* | mpixl*)
+          wl='-Wl,'
+          ;;
+        como)
+          wl='-lopt='
+          ;;
+        *)
+          case `$CC -V 2>&1 | sed 5q` in
+            *Sun\ F* | *Sun*Fortran*)
+              wl=
+              ;;
+            *Sun\ C*)
+              wl='-Wl,'
+              ;;
+          esac
+          ;;
+      esac
+      ;;
+    newsos6)
+      ;;
+    *nto* | *qnx*)
+      ;;
+    osf3* | osf4* | osf5*)
+      wl='-Wl,'
+      ;;
+    rdos*)
+      ;;
+    solaris*)
+      case $cc_basename in
+        f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
+          wl='-Qoption ld '
+          ;;
+        *)
+          wl='-Wl,'
+          ;;
+      esac
+      ;;
+    sunos4*)
+      wl='-Qoption ld '
+      ;;
+    sysv4 | sysv4.2uw2* | sysv4.3*)
+      wl='-Wl,'
+      ;;
+    sysv4*MP*)
+      ;;
+    sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
+      wl='-Wl,'
+      ;;
+    unicos*)
+      wl='-Wl,'
+      ;;
+    uts4*)
+      ;;
+  esac
+fi
+
+# Code taken from libtool.m4's _LT_LINKER_SHLIBS.
+
+hardcode_libdir_flag_spec=
+hardcode_libdir_separator=
+hardcode_direct=no
+hardcode_minus_L=no
+
+case "$host_os" in
+  cygwin* | mingw* | pw32* | cegcc*)
+    # FIXME: the MSVC++ port hasn't been tested in a loooong time
+    # When not using gcc, we currently assume that we are using
+    # Microsoft Visual C++.
+    if test "$GCC" != yes; then
+      with_gnu_ld=no
+    fi
+    ;;
+  interix*)
+    # we just hope/assume this is gcc and not c89 (= MSVC++)
+    with_gnu_ld=yes
+    ;;
+  openbsd*)
+    with_gnu_ld=no
+    ;;
+esac
+
+ld_shlibs=yes
+if test "$with_gnu_ld" = yes; then
+  # Set some defaults for GNU ld with shared library support. These
+  # are reset later if shared libraries are not supported. Putting them
+  # here allows them to be overridden if necessary.
+  # Unlike libtool, we use -rpath here, not --rpath, since the documented
+  # option of GNU ld is called -rpath, not --rpath.
+  hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+  case "$host_os" in
+    aix[3-9]*)
+      # On AIX/PPC, the GNU linker is very broken
+      if test "$host_cpu" != ia64; then
+        ld_shlibs=no
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    beos*)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec='-L$libdir'
+      if $LD --help 2>&1 | grep 'auto-import' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    haiku*)
+      ;;
+    interix[3-9]*)
+      hardcode_direct=no
+      hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+      ;;
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    netbsd*)
+      ;;
+    solaris*)
+      if $LD -v 2>&1 | grep 'BFD 2\.8' > /dev/null; then
+        ld_shlibs=no
+      elif $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
+      case `$LD -v 2>&1` in
+        *\ [01].* | *\ 2.[0-9].* | *\ 2.1[0-5].*)
+          ld_shlibs=no
+          ;;
+        *)
+          if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+            hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-rpath,$libdir`'
+          else
+            ld_shlibs=no
+          fi
+          ;;
+      esac
+      ;;
+    sunos4*)
+      hardcode_direct=yes
+      ;;
+    *)
+      if $LD --help 2>&1 | grep ': supported targets:.* elf' > /dev/null; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+  esac
+  if test "$ld_shlibs" = no; then
+    hardcode_libdir_flag_spec=
+  fi
+else
+  case "$host_os" in
+    aix3*)
+      # Note: this linker hardcodes the directories in LIBPATH if there
+      # are no directories specified by -L.
+      hardcode_minus_L=yes
+      if test "$GCC" = yes; then
+        # Neither direct hardcoding nor static linking is supported with a
+        # broken collect2.
+        hardcode_direct=unsupported
+      fi
+      ;;
+    aix[4-9]*)
+      if test "$host_cpu" = ia64; then
+        # On IA64, the linker does run time linking by default, so we don't
+        # have to do anything special.
+        aix_use_runtimelinking=no
+      else
+        aix_use_runtimelinking=no
+        # Test if we are trying to use run time linking or normal
+        # AIX style linking. If -brtl is somewhere in LDFLAGS, we
+        # need to do runtime linking.
+        case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
+          for ld_flag in $LDFLAGS; do
+            if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
+              aix_use_runtimelinking=yes
+              break
+            fi
+          done
+          ;;
+        esac
+      fi
+      hardcode_direct=yes
+      hardcode_libdir_separator=':'
+      if test "$GCC" = yes; then
+        case $host_os in aix4.[012]|aix4.[012].*)
+          collect2name=`${CC} -print-prog-name=collect2`
+          if test -f "$collect2name" && \
+            strings "$collect2name" | grep resolve_lib_name >/dev/null
+          then
+            # We have reworked collect2
+            :
+          else
+            # We have old collect2
+            hardcode_direct=unsupported
+            hardcode_minus_L=yes
+            hardcode_libdir_flag_spec='-L$libdir'
+            hardcode_libdir_separator=
+          fi
+          ;;
+        esac
+      fi
+      # Begin _LT_AC_SYS_LIBPATH_AIX.
+      echo 'int main () { return 0; }' > conftest.c
+      ${CC} ${LDFLAGS} conftest.c -o conftest
+      aix_libpath=`dump -H conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      if test -z "$aix_libpath"; then
+        aix_libpath=`dump -HX64 conftest 2>/dev/null | sed -n -e '/Import File Strings/,/^$/ { /^0/ { s/^0  *\(.*\)$/\1/; p; }
+}'`
+      fi
+      if test -z "$aix_libpath"; then
+        aix_libpath="/usr/lib:/lib"
+      fi
+      rm -f conftest.c conftest
+      # End _LT_AC_SYS_LIBPATH_AIX.
+      if test "$aix_use_runtimelinking" = yes; then
+        hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+      else
+        if test "$host_cpu" = ia64; then
+          hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
+        else
+          hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
+        fi
+      fi
+      ;;
+    amigaos*)
+      case "$host_cpu" in
+        powerpc)
+          ;;
+        m68k)
+          hardcode_libdir_flag_spec='-L$libdir'
+          hardcode_minus_L=yes
+          ;;
+      esac
+      ;;
+    bsdi[45]*)
+      ;;
+    cygwin* | mingw* | pw32* | cegcc*)
+      # When not using gcc, we currently assume that we are using
+      # Microsoft Visual C++.
+      # hardcode_libdir_flag_spec is actually meaningless, as there is
+      # no search path for DLLs.
+      hardcode_libdir_flag_spec=' '
+      libext=lib
+      ;;
+    darwin* | rhapsody*)
+      hardcode_direct=no
+      if { case $cc_basename in ifort*) true;; *) test "$GCC" = yes;; esac; }; then
+        :
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    dgux*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    freebsd2.2*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    freebsd2*)
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    freebsd* | dragonfly*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    hpux9*)
+      hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+      hardcode_libdir_separator=:
+      hardcode_direct=yes
+      # hardcode_minus_L: Not really in the search PATH,
+      # but as the default location of the library.
+      hardcode_minus_L=yes
+      ;;
+    hpux10*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        hardcode_direct=yes
+        # hardcode_minus_L: Not really in the search PATH,
+        # but as the default location of the library.
+        hardcode_minus_L=yes
+      fi
+      ;;
+    hpux11*)
+      if test "$with_gnu_ld" = no; then
+        hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
+        hardcode_libdir_separator=:
+        case $host_cpu in
+          hppa*64*|ia64*)
+            hardcode_direct=no
+            ;;
+          *)
+            hardcode_direct=yes
+            # hardcode_minus_L: Not really in the search PATH,
+            # but as the default location of the library.
+            hardcode_minus_L=yes
+            ;;
+        esac
+      fi
+      ;;
+    irix5* | irix6* | nonstopux*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    netbsd*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      hardcode_direct=yes
+      ;;
+    newsos6)
+      hardcode_direct=yes
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    *nto* | *qnx*)
+      ;;
+    openbsd*)
+      if test -f /usr/libexec/ld.so; then
+        hardcode_direct=yes
+        if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
+          hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+        else
+          case "$host_os" in
+            openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
+              hardcode_libdir_flag_spec='-R$libdir'
+              ;;
+            *)
+              hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
+              ;;
+          esac
+        fi
+      else
+        ld_shlibs=no
+      fi
+      ;;
+    os2*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_minus_L=yes
+      ;;
+    osf3*)
+      hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      hardcode_libdir_separator=:
+      ;;
+    osf4* | osf5*)
+      if test "$GCC" = yes; then
+        hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
+      else
+        # Both cc and cxx compiler support -rpath directly
+        hardcode_libdir_flag_spec='-rpath $libdir'
+      fi
+      hardcode_libdir_separator=:
+      ;;
+    solaris*)
+      hardcode_libdir_flag_spec='-R$libdir'
+      ;;
+    sunos4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      hardcode_direct=yes
+      hardcode_minus_L=yes
+      ;;
+    sysv4)
+      case $host_vendor in
+        sni)
+          hardcode_direct=yes # is this really true???
+          ;;
+        siemens)
+          hardcode_direct=no
+          ;;
+        motorola)
+          hardcode_direct=no #Motorola manual says yes, but my tests say they lie
+          ;;
+      esac
+      ;;
+    sysv4.3*)
+      ;;
+    sysv4*MP*)
+      if test -d /usr/nec; then
+        ld_shlibs=yes
+      fi
+      ;;
+    sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
+      ;;
+    sysv5* | sco3.2v5* | sco5v6*)
+      hardcode_libdir_flag_spec='`test -z "$SCOABSPATH" && echo ${wl}-R,$libdir`'
+      hardcode_libdir_separator=':'
+      ;;
+    uts4*)
+      hardcode_libdir_flag_spec='-L$libdir'
+      ;;
+    *)
+      ld_shlibs=no
+      ;;
+  esac
+fi
+
+# Check dynamic linker characteristics
+# Code taken from libtool.m4's _LT_SYS_DYNAMIC_LINKER.
+# Unlike libtool.m4, here we don't care about _all_ names of the library, but
+# only about the one the linker finds when passed -lNAME. This is the last
+# element of library_names_spec in libtool.m4, or possibly two of them if the
+# linker has special search rules.
+library_names_spec=      # the last element of library_names_spec in libtool.m4
+libname_spec='lib$name'
+case "$host_os" in
+  aix3*)
+    library_names_spec='$libname.a'
+    ;;
+  aix[4-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  amigaos*)
+    case "$host_cpu" in
+      powerpc*)
+        library_names_spec='$libname$shrext' ;;
+      m68k)
+        library_names_spec='$libname.a' ;;
+    esac
+    ;;
+  beos*)
+    library_names_spec='$libname$shrext'
+    ;;
+  bsdi[45]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  cygwin* | mingw* | pw32* | cegcc*)
+    shrext=.dll
+    library_names_spec='$libname.dll.a $libname.lib'
+    ;;
+  darwin* | rhapsody*)
+    shrext=.dylib
+    library_names_spec='$libname$shrext'
+    ;;
+  dgux*)
+    library_names_spec='$libname$shrext'
+    ;;
+  freebsd* | dragonfly*)
+    case "$host_os" in
+      freebsd[123]*)
+        library_names_spec='$libname$shrext$versuffix' ;;
+      *)
+        library_names_spec='$libname$shrext' ;;
+    esac
+    ;;
+  gnu*)
+    library_names_spec='$libname$shrext'
+    ;;
+  haiku*)
+    library_names_spec='$libname$shrext'
+    ;;
+  hpux9* | hpux10* | hpux11*)
+    case $host_cpu in
+      ia64*)
+        shrext=.so
+        ;;
+      hppa*64*)
+        shrext=.sl
+        ;;
+      *)
+        shrext=.sl
+        ;;
+    esac
+    library_names_spec='$libname$shrext'
+    ;;
+  interix[3-9]*)
+    library_names_spec='$libname$shrext'
+    ;;
+  irix5* | irix6* | nonstopux*)
+    library_names_spec='$libname$shrext'
+    case "$host_os" in
+      irix5* | nonstopux*)
+        libsuff= shlibsuff=
+        ;;
+      *)
+        case $LD in
+          *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ") libsuff= shlibsuff= ;;
+          *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ") libsuff=32 shlibsuff=N32 ;;
+          *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ") libsuff=64 shlibsuff=64 ;;
+          *) libsuff= shlibsuff= ;;
+        esac
+        ;;
+    esac
+    ;;
+  linux*oldld* | linux*aout* | linux*coff*)
+    ;;
+  linux* | k*bsd*-gnu | kopensolaris*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  knetbsd*-gnu)
+    library_names_spec='$libname$shrext'
+    ;;
+  netbsd*)
+    library_names_spec='$libname$shrext'
+    ;;
+  newsos6)
+    library_names_spec='$libname$shrext'
+    ;;
+  *nto* | *qnx*)
+    library_names_spec='$libname$shrext'
+    ;;
+  openbsd*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  os2*)
+    libname_spec='$name'
+    shrext=.dll
+    library_names_spec='$libname.a'
+    ;;
+  osf3* | osf4* | osf5*)
+    library_names_spec='$libname$shrext'
+    ;;
+  rdos*)
+    ;;
+  solaris*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sunos4*)
+    library_names_spec='$libname$shrext$versuffix'
+    ;;
+  sysv4 | sysv4.3*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv4*MP*)
+    library_names_spec='$libname$shrext'
+    ;;
+  sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
+    library_names_spec='$libname$shrext'
+    ;;
+  tpf*)
+    library_names_spec='$libname$shrext'
+    ;;
+  uts4*)
+    library_names_spec='$libname$shrext'
+    ;;
+esac
+
+sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
+escaped_wl=`echo "X$wl" | sed -e 's/^X//' -e "$sed_quote_subst"`
+shlibext=`echo "$shrext" | sed -e 's,^\.,,'`
+escaped_libname_spec=`echo "X$libname_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_library_names_spec=`echo "X$library_names_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+escaped_hardcode_libdir_flag_spec=`echo "X$hardcode_libdir_flag_spec" | sed -e 's/^X//' -e "$sed_quote_subst"`
+
+LC_ALL=C sed -e 's/^\([a-zA-Z0-9_]*\)=/acl_cv_\1=/' <<EOF
+
+# How to pass a linker flag through the compiler.
+wl="$escaped_wl"
+
+# Static library suffix (normally "a").
+libext="$libext"
+
+# Shared library suffix (normally "so").
+shlibext="$shlibext"
+
+# Format of library name prefix.
+libname_spec="$escaped_libname_spec"
+
+# Library names that the linker finds when passed -lNAME.
+library_names_spec="$escaped_library_names_spec"
+
+# Flag to hardcode \$libdir into a binary during linking.
+# This must work even if \$libdir does not exist.
+hardcode_libdir_flag_spec="$escaped_hardcode_libdir_flag_spec"
+
+# Whether we need a single -rpath flag with a separated argument.
+hardcode_libdir_separator="$hardcode_libdir_separator"
+
+# Set to yes if using DIR/libNAME.so during linking hardcodes DIR into the
+# resulting binary.
+hardcode_direct="$hardcode_direct"
+
+# Set to yes if using the -LDIR flag during linking hardcodes DIR into the
+# resulting binary.
+hardcode_minus_L="$hardcode_minus_L"
+
+EOF

configure.ac

@@ -0,0 +1,721 @@
+dnl Process this file with autoconf to produce a configure script.
+AC_PREREQ([2.69])
+m4_define([libsubid_abi_major], 5)
+m4_define([libsubid_abi_minor], 0)
+m4_define([libsubid_abi_micro], 0)
+m4_define([libsubid_abi], [libsubid_abi_major.libsubid_abi_minor.libsubid_abi_micro])
+AC_INIT([shadow], [4.17.4], [pkg-shadow-devel@lists.alioth.debian.org], [],
+	[https://github.com/shadow-maint/shadow])
+AM_INIT_AUTOMAKE([1.11 foreign dist-xz subdir-objects tar-pax])
+AC_CONFIG_MACRO_DIRS([m4])
+AM_SILENT_RULES([yes])
+AC_CONFIG_HEADERS([config.h])
+
+AC_SUBST([LIBSUBID_ABI_MAJOR], [libsubid_abi_major])
+AC_SUBST([LIBSUBID_ABI_MINOR], [libsubid_abi_minor])
+AC_SUBST([LIBSUBID_ABI_MICRO], [libsubid_abi_micro])
+AC_SUBST([LIBSUBID_ABI], [libsubid_abi])
+
+dnl Some hacks...
+test "$prefix" = "NONE" && prefix="/usr"
+test "$prefix" = "/usr" && exec_prefix=""
+
+AC_USE_SYSTEM_EXTENSIONS
+
+AC_ENABLE_STATIC
+AC_ENABLE_SHARED
+
+AM_MAINTAINER_MODE
+
+dnl Checks for programs.
+AC_PROG_CC
+AC_PROG_LN_S
+AC_PROG_YACC
+LT_INIT
+LT_LIB_DLLOAD
+
+dnl Checks for libraries.
+
+dnl shadow now uses the libc's shadow implementation
+AC_CHECK_HEADER([shadow.h],,[AC_MSG_ERROR([You need a libc with shadow.h])])
+
+AC_CHECK_FUNCS(arc4random_buf futimes \
+	getentropy getrandom getspnam getusershell \
+	lckpwdf lutimes \
+	updwtmpx innetgr \
+	getspnam_r \
+	rpmatch \
+	memset_explicit explicit_bzero stpecpy stpeprintf)
+AC_SYS_LARGEFILE
+
+dnl Checks for typedefs, structures, and compiler characteristics.
+
+AC_CHECK_MEMBERS([struct utmpx.ut_name,
+                  struct utmpx.ut_host,
+                  struct utmpx.ut_syslen,
+                  struct utmpx.ut_addr,
+                  struct utmpx.ut_addr_v6,
+                  struct utmpx.ut_time,
+                  struct utmpx.ut_xtime],,,[[#include <utmpx.h>]])
+
+dnl Checks for library functions.
+AC_FUNC_UTIME_NULL
+AC_REPLACE_FUNCS(putgrent putpwent putspent)
+AC_REPLACE_FUNCS(sgetgrent sgetpwent sgetspent)
+
+AC_CHECK_FUNC(setpgrp)
+AC_CHECK_FUNC(secure_getenv, [AC_DEFINE(HAS_SECURE_GETENV,
+                                        1,
+                                        [Defined to 1 if you have the declaration of 'secure_getenv'])])
+
+AC_CACHE_CHECK([location of shared mail directory], shadow_cv_maildir,
+[for shadow_cv_maildir in /var/mail /var/spool/mail /usr/spool/mail /usr/mail none; do
+	if test -d $shadow_cv_maildir; then
+		break
+	fi
+done])
+if test $shadow_cv_maildir != none; then
+	AC_DEFINE_UNQUOTED(MAIL_SPOOL_DIR, "$shadow_cv_maildir",
+		[Location of system mail spool directory.])
+fi
+
+AC_CACHE_CHECK([location of user mail file], shadow_cv_mailfile,
+[for shadow_cv_mailfile in Mailbox mailbox Mail mail .mail none; do
+	if test -f $HOME/$shadow_cv_mailfile; then
+		break
+	fi
+done])
+if test $shadow_cv_mailfile != none; then
+	AC_DEFINE_UNQUOTED(MAIL_SPOOL_FILE, "$shadow_cv_mailfile",
+		[Name of user's mail spool file if stored in user's home directory.])
+fi
+
+AC_CACHE_CHECK([location of faillog/lastlog/wtmp], shadow_cv_logdir,
+[for shadow_cv_logdir in /var/log /var/adm /usr/adm /etc; do
+	if test -d $shadow_cv_logdir; then
+		break
+	fi
+done])
+AC_DEFINE_UNQUOTED(_WTMP_FILE, "$shadow_cv_logdir/wtmp",
+	[Path for wtmp file.])
+AC_DEFINE_UNQUOTED(LASTLOG_FILE, "$shadow_cv_logdir/lastlog",
+	[Path for lastlog file.])
+AC_DEFINE_UNQUOTED(FAILLOG_FILE, "$shadow_cv_logdir/faillog",
+	[Path for faillog file.])
+
+AC_DEFINE_UNQUOTED(PASSWD_PROGRAM, "$exec_prefix/bin/passwd",
+	[Path to passwd program.])
+
+AC_ARG_ENABLE(shadowgrp,
+	[AS_HELP_STRING([--enable-shadowgrp], [enable shadow group support @<:@default=yes@:>@])],
+	[case "${enableval}" in
+	 yes) enable_shadowgrp="yes" ;;
+	  no) enable_shadowgrp="no" ;;
+	   *) AC_MSG_ERROR(bad value ${enableval} for --enable-shadowgrp) ;;
+	 esac],
+	[enable_shadowgrp="yes"]
+)
+
+AC_ARG_ENABLE(man,
+	[AS_HELP_STRING([--enable-man],
+		[regenerate roff man pages from Docbook @<:@default=no@:>@])],
+	[enable_man="${enableval}"],
+	[enable_man="no"]
+)
+
+AC_ARG_ENABLE(account-tools-setuid,
+	[AS_HELP_STRING([--enable-account-tools-setuid],
+		[Install the user and group management tools setuid and authenticate the callers. This requires --with-libpam.])],
+	[case "${enableval}" in
+	 yes) enable_acct_tools_setuid="yes" ;;
+	  no) enable_acct_tools_setuid="no" ;;
+	   *) AC_MSG_ERROR(bad value ${enableval} for --enable-account-tools-setuid)
+	   ;;
+	 esac],
+	[enable_acct_tools_setuid="no"]
+)
+
+AC_ARG_ENABLE(subordinate-ids,
+	[AS_HELP_STRING([--enable-subordinate-ids],
+		[support subordinate ids @<:@default=yes@:>@])],
+	[enable_subids="${enableval}"],
+	[enable_subids="maybe"]
+)
+
+AC_ARG_ENABLE(lastlog,
+	[AS_HELP_STRING([--enable-lastlog],
+		[enable lastlog @<:@default=no@:>@])],
+	[enable_lastlog="${enableval}"],
+	[enable_lastlog="no"]
+)
+
+AC_ARG_ENABLE(logind,
+	[AS_HELP_STRING([--enable-logind],
+		[enable logind @<:@default=yes@:>@])],
+	[enable_logind="${enableval}"],
+	[enable_logind="yes"]
+)
+
+AC_ARG_WITH(audit,
+	[AS_HELP_STRING([--with-audit], [use auditing support @<:@default=yes if found@:>@])],
+	[with_audit=$withval], [with_audit=maybe])
+AC_ARG_WITH(libpam,
+	[AS_HELP_STRING([--with-libpam], [use libpam for PAM support @<:@default=yes if found@:>@])],
+	[with_libpam=$withval], [with_libpam=maybe])
+AC_ARG_WITH(btrfs,
+	[AS_HELP_STRING([--with-btrfs], [add BtrFS support @<:@default=yes if found@:>@])],
+	[with_btrfs=$withval], [with_btrfs=maybe])
+AC_ARG_WITH(selinux,
+	[AS_HELP_STRING([--with-selinux], [use SELinux support @<:@default=yes if found@:>@])],
+	[with_selinux=$withval], [with_selinux=maybe])
+AC_ARG_WITH(acl,
+	[AS_HELP_STRING([--with-acl], [use ACL support @<:@default=yes if found@:>@])],
+	[with_acl=$withval], [with_acl=maybe])
+AC_ARG_WITH(attr,
+	[AS_HELP_STRING([--with-attr], [use Extended Attribute support @<:@default=yes if found@:>@])],
+	[with_attr=$withval], [with_attr=maybe])
+AC_ARG_WITH(skey,
+	[AS_HELP_STRING([--with-skey], [use S/Key support @<:@default=no@:>@])],
+	[with_skey=$withval], [with_skey=no])
+AC_ARG_WITH(tcb,
+	[AS_HELP_STRING([--with-tcb], [use tcb support (incomplete) @<:@default=yes if found@:>@])],
+	[with_tcb=$withval], [with_tcb=maybe])
+AC_ARG_WITH(sha-crypt,
+	[AS_HELP_STRING([--with-sha-crypt], [allow the SHA256 and SHA512 password encryption algorithms @<:@default=yes@:>@])],
+	[with_sha_crypt=$withval], [with_sha_crypt=yes])
+AC_ARG_WITH(bcrypt,
+	[AS_HELP_STRING([--with-bcrypt], [allow the bcrypt password encryption algorithm @<:@default=no@:>@])],
+	[with_bcrypt=$withval], [with_bcrypt=no])
+AC_ARG_WITH(yescrypt,
+	[AS_HELP_STRING([--with-yescrypt], [allow the yescrypt password encryption algorithm @<:@default=no@:>@])],
+	[with_yescrypt=$withval], [with_yescrypt=no])
+AC_ARG_WITH(nscd,
+	[AS_HELP_STRING([--with-nscd], [enable support for nscd @<:@default=yes@:>@])],
+	[with_nscd=$withval], [with_nscd=yes])
+AC_ARG_WITH(sssd,
+	[AS_HELP_STRING([--with-sssd], [enable support for flushing sssd caches @<:@default=yes@:>@])],
+	[with_sssd=$withval], [with_sssd=yes])
+AC_ARG_WITH(group-name-max-length,
+	[AS_HELP_STRING([--with-group-name-max-length], [set max group name length @<:@default=32@:>@])],
+	[with_group_name_max_length=$withval], [with_group_name_max_length=yes])
+AC_ARG_WITH(su,
+	[AS_HELP_STRING([--with-su], [build and install su program and man page @<:@default=yes@:>@])],
+	[with_su=$withval], [with_su=yes])
+AC_ARG_WITH(libbsd,
+	[AS_HELP_STRING([--with-libbsd], [use libbsd support @<:@default=yes if found@:>@])],
+	[with_libbsd=$withval], [with_libbsd=yes])
+
+if test "$with_group_name_max_length" = "no" ; then
+	with_group_name_max_length=0
+elif test "$with_group_name_max_length" = "yes" ; then
+	with_group_name_max_length=32
+fi
+AC_DEFINE_UNQUOTED(GROUP_NAME_MAX_LENGTH, $with_group_name_max_length, [max group name length])
+AC_SUBST(GROUP_NAME_MAX_LENGTH)
+GROUP_NAME_MAX_LENGTH="$with_group_name_max_length"
+
+
+AM_CONDITIONAL(USE_SHA_CRYPT, test "x$with_sha_crypt" = "xyes")
+if test "$with_sha_crypt" = "yes"; then
+	AC_DEFINE(USE_SHA_CRYPT, 1, [Define to allow the SHA256 and SHA512 password encryption algorithms])
+fi
+
+AM_CONDITIONAL(USE_BCRYPT, test "x$with_bcrypt" = "xyes")
+if test "$with_bcrypt" = "yes"; then
+	AC_DEFINE(USE_BCRYPT, 1, [Define to allow the bcrypt password encryption algorithm])
+fi
+
+AM_CONDITIONAL(USE_YESCRYPT, test "x$with_yescrypt" = "xyes")
+if test "$with_yescrypt" = "yes"; then
+	AC_DEFINE(USE_YESCRYPT, 1, [Define to allow the yescrypt password encryption algorithm])
+fi
+
+if test "$with_nscd" = "yes"; then
+	AC_CHECK_FUNC(posix_spawn,
+	              [AC_DEFINE(USE_NSCD, 1, [Define to support flushing of nscd caches])],
+	              [AC_MSG_ERROR([posix_spawn is needed for nscd support])])
+fi
+
+if test "$with_sssd" = "yes"; then
+	AC_CHECK_FUNC(posix_spawn,
+	              [AC_DEFINE(USE_SSSD, 1, [Define to support flushing of sssd caches])],
+	              [AC_MSG_ERROR([posix_spawn is needed for sssd support])])
+fi
+
+AS_IF([test "$with_su" != "no"], AC_DEFINE(WITH_SU, 1, [Build with su]))
+AM_CONDITIONAL([WITH_SU], [test "x$with_su" != "xno"])
+
+dnl Check for some functions in libc first, only if not found check for
+dnl other libraries.  This should prevent linking libnsl if not really
+dnl needed (Linux glibc, Irix), but still link it if needed (Solaris).
+
+AC_SEARCH_LIBS(gethostbyname, nsl)
+
+PKG_CHECK_MODULES([CMOCKA], [cmocka], [have_cmocka="yes"],
+	[AC_MSG_WARN([libcmocka not found, cmocka tests will not be built])])
+AM_CONDITIONAL([HAVE_CMOCKA], [test x$have_cmocka = xyes])
+
+AC_CHECK_LIB([econf],[econf_readDirs],[LIBECONF="-leconf"],[LIBECONF=""])
+if test -n "$LIBECONF"; then
+        AC_DEFINE_UNQUOTED([VENDORDIR], ["$enable_vendordir"],
+					[Directory for distribution provided configuration files])
+	ECONF_CPPFLAGS="-DUSE_ECONF=1"
+	AC_ARG_ENABLE([vendordir],
+		AS_HELP_STRING([--enable-vendordir=DIR], [Directory for distribution provided configuration files]),,[])
+fi
+AC_SUBST(ECONF_CPPFLAGS)
+AC_SUBST(LIBECONF)
+AC_SUBST([VENDORDIR], [$enable_vendordir])
+if test "x$enable_vendordir" != x; then
+	AC_DEFINE(HAVE_VENDORDIR, 1, [Define to support vendor settings.])
+fi
+AM_CONDITIONAL([HAVE_VENDORDIR], [test "x$enable_vendordir" != x])
+
+if test "$enable_shadowgrp" = "yes"; then
+	AC_DEFINE(SHADOWGRP, 1, [Define to support the shadow group file.])
+fi
+AM_CONDITIONAL(SHADOWGRP, test "x$enable_shadowgrp" = "xyes")
+
+if test "$enable_man" = "yes"; then
+	dnl
+	dnl Check for xsltproc
+	dnl
+	AC_PATH_PROG([XSLTPROC], [xsltproc])
+	if test -z "$XSLTPROC"; then
+		enable_man=no
+		AC_MSG_ERROR([xsltproc is missing.])
+	fi
+
+	dnl check for DocBook DTD and stylesheets in the local catalog.
+	JH_CHECK_XML_CATALOG([-//OASIS//DTD DocBook XML V4.5//EN],
+		[DocBook XML DTD V4.5], [], enable_man=no)
+	JH_CHECK_XML_CATALOG([http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl],
+		[DocBook XSL Stylesheets >= 1.70.1], [], enable_man=no)
+fi
+AM_CONDITIONAL(ENABLE_REGENERATE_MAN, test "x$enable_man" != "xno")
+
+if test "$enable_subids" != "no"; then
+	dnl
+	dnl FIXME: check if 32 bit UIDs/GIDs are supported by libc
+	dnl
+	AC_CHECK_SIZEOF([uid_t],, [#include "sys/types.h"])
+	AC_CHECK_SIZEOF([gid_t],, [#include "sys/types.h"])
+
+	if test "$ac_cv_sizeof_uid_t" -ge 4 && test "$ac_cv_sizeof_gid_t" -ge 4; then
+		AC_DEFINE(ENABLE_SUBIDS, 1, [Define to support the subordinate IDs.])
+		enable_subids="yes"
+	else
+		if test "x$enable_subids" = "xyes"; then
+			AC_MSG_ERROR([Cannot enable support the subordinate IDs on systems where gid_t or uid_t has less than 32 bits])
+		fi
+		enable_subids="no"
+	fi
+fi
+AM_CONDITIONAL(ENABLE_SUBIDS, test "x$enable_subids" != "xno")
+
+if test "$enable_lastlog" = "yes" && test "$ac_cv_header_lastlog_h" = "yes"; then
+	AC_CACHE_CHECK(for ll_host in struct lastlog,
+		ac_cv_struct_lastlog_ll_host,
+		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <lastlog.h>],
+					[struct lastlog ll; char *cp = ll.ll_host;]
+				)],
+			[ac_cv_struct_lastlog_ll_host=yes],
+			[ac_cv_struct_lastlog_ll_host=no]
+		)
+	)
+
+	if test "$ac_cv_struct_lastlog_ll_host" = "yes"; then
+		AC_DEFINE(HAVE_LL_HOST, 1,
+			[Define if struct lastlog has ll_host])
+		AC_DEFINE(ENABLE_LASTLOG, 1, [Define to support lastlog.])
+		enable_lastlog="yes"
+	else
+		AC_MSG_ERROR([Cannot enable support for lastlog on systems where the data structures aren't available])
+		enable_subids="no"
+	fi
+fi
+AM_CONDITIONAL(ENABLE_LASTLOG, test "x$enable_lastlog" != "xno")
+
+AC_SUBST(LIBSYSTEMD)
+if test "$enable_logind" = "yes"; then
+	AC_CHECK_LIB(systemd, sd_session_get_remote_host,
+		[enable_logind="yes"; [LIBSYSTEMD=-lsystemd];
+		AC_DEFINE(ENABLE_LOGIND, 1,
+			[Define to manage session support with logind.])],
+		[enable_logind="no"])
+fi
+AM_CONDITIONAL(ENABLE_LOGIND, test "x$enable_logind" != "xno")
+
+AC_SUBST(LIBCRYPT)
+AC_CHECK_LIB(crypt, crypt, [LIBCRYPT=-lcrypt],
+	[AC_MSG_ERROR([crypt() not found])])
+
+AC_SUBST(LIYESCRYPT)
+AC_CHECK_LIB(crypt, crypt, [LIYESCRYPT=-lcrypt],
+	[AC_MSG_ERROR([crypt() not found])])
+
+AC_SUBST(LIBBSD)
+if test "$with_libbsd" != "no"; then
+	AC_SEARCH_LIBS([readpassphrase], [bsd], [], [
+		AC_MSG_ERROR([readpassphrase() is missing, either from libc or libbsd])
+	])
+	AS_IF([test "$ac_cv_search_readpassphrase" = "-lbsd"], [
+		PKG_CHECK_MODULES([LIBBSD], [libbsd-overlay])
+	])
+	dnl Make sure either the libc or libbsd provide the header.
+	save_CFLAGS="$CFLAGS"
+	CFLAGS="$CFLAGS $LIBBSD_CFLAGS"
+	AC_CHECK_HEADERS([readpassphrase.h])
+	AS_IF([test "$ac_cv_header_readpassphrase_h" != "yes"], [
+		AC_MSG_ERROR([readpassphrase.h is missing])
+	])
+	CFLAGS="$save_CFLAGS"
+	AC_DEFINE(WITH_LIBBSD, 1, [Build shadow with libbsd support])
+else
+	AC_DEFINE(WITH_LIBBSD, 0, [Build shadow without libbsd support])
+fi
+AM_CONDITIONAL(WITH_LIBBSD, test x$with_libbsd = xyes)
+
+AC_SUBST(LIBACL)
+if test "$with_acl" != "no"; then
+	AC_CHECK_HEADERS(acl/libacl.h attr/error_context.h, [acl_header="yes"], [acl_header="no"])
+	if test "$acl_header$with_acl" = "noyes" ; then
+		AC_MSG_ERROR([acl/libacl.h or attr/error_context.h is missing])
+	elif test "$acl_header" = "yes" ; then
+		AC_CHECK_LIB(acl, perm_copy_file,
+		             [AC_CHECK_LIB(acl, perm_copy_fd,
+		                           [acl_lib="yes"],
+		                           [acl_lib="no"])],
+		             [acl_lib="no"])
+		if test "$acl_lib$with_acl" = "noyes" ; then
+			AC_MSG_ERROR([libacl not found])
+		elif test "$acl_lib" = "no" ; then
+			with_acl="no"
+		else
+			AC_DEFINE(WITH_ACL, 1,
+			          [Build shadow with ACL support])
+			LIBACL="-lacl"
+			with_acl="yes"
+		fi
+	else
+		with_acl="no"
+	fi
+fi
+
+AC_SUBST(LIBATTR)
+if test "$with_attr" != "no"; then
+	AC_CHECK_HEADERS(attr/libattr.h attr/error_context.h, [attr_header="yes"], [attr_header="no"])
+	if test "$attr_header$with_attr" = "noyes" ; then
+		AC_MSG_ERROR([attr/libattr.h or attr/error_context.h is missing])
+	elif test "$attr_header" = "yes" ; then
+		AC_CHECK_LIB(attr, attr_copy_file,
+		             [AC_CHECK_LIB(attr, attr_copy_fd,
+		                           [attr_lib="yes"],
+		                           [attr_lib="no"])],
+		             [attr_lib="no"])
+		if test "$attr_lib$with_attr" = "noyes" ; then
+			AC_MSG_ERROR([libattr not found])
+		elif test "$attr_lib" = "no" ; then
+			with_attr="no"
+		else
+			AC_DEFINE(WITH_ATTR, 1,
+			          [Build shadow with Extended Attributes support])
+			LIBATTR="-lattr"
+			with_attr="yes"
+		fi
+	else
+		with_attr="no"
+	fi
+fi
+
+AC_SUBST(LIBAUDIT)
+if test "$with_audit" != "no"; then
+	AC_CHECK_HEADER(libaudit.h, [audit_header="yes"], [audit_header="no"])
+	if test "$audit_header$with_audit" = "noyes" ; then
+		AC_MSG_ERROR([libaudit.h is missing])
+	elif test "$audit_header" = "yes"; then
+		AC_CHECK_DECL(AUDIT_ADD_USER,,[audit_header="no"],[#include <libaudit.h>])
+		AC_CHECK_DECL(AUDIT_DEL_USER,,[audit_header="no"],[#include <libaudit.h>])
+		AC_CHECK_DECL(AUDIT_ADD_GROUP,,[audit_header="no"],[#include <libaudit.h>])
+		AC_CHECK_DECL(AUDIT_DEL_GROUP,,[audit_header="no"],[#include <libaudit.h>])
+		if test "$audit_header$with_audit" = "noyes" ; then
+			AC_MSG_ERROR([AUDIT_ADD_USER AUDIT_DEL_USER AUDIT_ADD_GROUP or AUDIT_DEL_GROUP missing from libaudit.h])
+		fi
+	fi
+	if test "$audit_header" = "yes"; then
+		AC_CHECK_LIB(audit, audit_log_acct_message,
+		             [audit_lib="yes"], [audit_lib="no"])
+		if test "$audit_lib$with_audit" = "noyes" ; then
+			AC_MSG_ERROR([libaudit not found])
+		elif test "$audit_lib" = "no" ; then
+			with_audit="no"
+		else
+			AC_DEFINE(WITH_AUDIT, 1,
+			          [Define if you want to enable Audit messages])
+			LIBAUDIT="-laudit"
+			with_audit="yes"
+		fi
+	else
+		with_audit="no"
+	fi
+fi
+
+if test "$with_btrfs" != "no"; then
+	AC_CHECK_HEADERS([sys/statfs.h linux/magic.h linux/btrfs_tree.h], \
+		[btrfs_headers="yes"], [btrfs_headers="no"])
+	if test "$btrfs_headers$with_btrfs" = "noyes" ; then
+		AC_MSG_ERROR([One of sys/statfs.h linux/magic.h linux/btrfs_tree.h is missing])
+	fi
+
+	if test "$btrfs_headers" = "yes" ; then
+		AC_DEFINE(WITH_BTRFS, 1, [Build shadow with BtrFS support])
+		with_btrfs="yes"
+	fi
+fi
+AM_CONDITIONAL(WITH_BTRFS, test x$with_btrfs = xyes)
+
+AC_SUBST(LIBSELINUX)
+AC_SUBST(LIBSEMANAGE)
+if test "$with_selinux" != "no"; then
+	AC_CHECK_HEADERS(selinux/selinux.h, [selinux_header="yes"], [selinux_header="no"])
+	if test "$selinux_header$with_selinux" = "noyes" ; then
+		AC_MSG_ERROR([selinux/selinux.h is missing])
+	fi
+
+	AC_CHECK_HEADERS(semanage/semanage.h, [semanage_header="yes"], [semanage_header="no"])
+	if test "$semanage_header$with_selinux" = "noyes" ; then
+		AC_MSG_ERROR([semanage/semanage.h is missing])
+	fi
+
+	if test "$selinux_header$semanage_header" = "yesyes" ; then
+		AC_CHECK_LIB(selinux, is_selinux_enabled, [selinux_lib="yes"], [selinux_lib="no"])
+		if test "$selinux_lib$with_selinux" = "noyes" ; then
+			AC_MSG_ERROR([libselinux not found])
+		fi
+
+		AC_CHECK_LIB(semanage, semanage_connect, [semanage_lib="yes"], [semanage_lib="no"])
+		if test "$semanage_lib$with_selinux" = "noyes" ; then
+			AC_MSG_ERROR([libsemanage not found])
+		fi
+
+		if test "$selinux_lib$semanage_lib" = "yesyes" ; then
+			AC_DEFINE(WITH_SELINUX, 1,
+			          [Build shadow with SELinux support])
+			LIBSELINUX="-lselinux"
+			LIBSEMANAGE="-lsemanage"
+			with_selinux="yes"
+		else
+			with_selinux="no"
+		fi
+	else
+		with_selinux="no"
+	fi
+fi
+
+AC_SUBST(LIBTCB)
+if test "$with_tcb" != "no"; then
+	AC_CHECK_HEADERS(tcb.h, [tcb_header="yes"], [tcb_header="no"])
+	if test "$tcb_header$with_tcb" = "noyes" ; then
+		AC_MSG_ERROR([tcb.h is missing])
+	elif test "$tcb_header" = "yes" ; then
+		AC_CHECK_LIB(tcb, tcb_is_suspect, [tcb_lib="yes"], [tcb_lib="no"])
+		if test "$tcb_lib$with_tcb" = "noyes" ; then
+			AC_MSG_ERROR([libtcb not found])
+		elif test "$tcb_lib" = "no" ; then
+			with_tcb="no"
+		else
+			AC_DEFINE(WITH_TCB, 1, [Build shadow with tcb support (incomplete)])
+			LIBTCB="-ltcb"
+			with_tcb="yes"
+		fi
+	else
+		with_tcb="no"
+	fi
+fi
+AM_CONDITIONAL(WITH_TCB, test x$with_tcb = xyes)
+
+AC_SUBST(LIBPAM)
+if test "$with_libpam" != "no"; then
+	AC_CHECK_LIB(pam, pam_start,
+	             [pam_lib="yes"], [pam_lib="no"])
+	if test "$pam_lib$with_libpam" = "noyes" ; then
+		AC_MSG_ERROR(libpam not found)
+	fi
+
+	LIBPAM="-lpam"
+	pam_conv_function="no"
+
+	AC_CHECK_LIB(pam, openpam_ttyconv,
+	             [pam_conv_function="openpam_ttyconv"],
+	             AC_CHECK_LIB(pam_misc, misc_conv,
+	                          [pam_conv_function="misc_conv"; LIBPAM="$LIBPAM -lpam_misc"])
+	            )
+
+	if test "$pam_conv_function$with_libpam" = "noyes" ; then
+		AC_MSG_ERROR(PAM conversation function not found)
+	fi
+
+	pam_headers_found=no
+	AC_CHECK_HEADERS( [security/openpam.h security/pam_misc.h],
+	                 [ pam_headers_found=yes ; break ], [],
+	                 [ #include <security/pam_appl.h> ] )
+	if test "$pam_headers_found$with_libpam" = "noyes" ; then
+	                AC_MSG_ERROR(PAM headers not found)
+	fi
+
+
+	if test "$pam_lib$pam_headers_found" = "yesyes" -a "$pam_conv_function" != "no" ; then
+		with_libpam="yes"
+	else
+		with_libpam="no"
+		unset LIBPAM
+	fi
+fi
+dnl Now with_libpam is either yes or no
+if test "$with_libpam" = "yes"; then
+	AC_CHECK_DECLS([PAM_ESTABLISH_CRED,
+	                PAM_DELETE_CRED,
+	                PAM_NEW_AUTHTOK_REQD,
+	                PAM_DATA_SILENT],
+	               [], [], [#include <security/pam_appl.h>])
+
+
+	save_libs=$LIBS
+	LIBS="$LIBS $LIBPAM"
+	# We do not use AC_CHECK_FUNCS to avoid duplicated definition with
+	# Linux PAM.
+	AC_CHECK_FUNC(pam_fail_delay, [AC_DEFINE(HAS_PAM_FAIL_DELAY, 1, [Define to 1 if you have the declaration of 'pam_fail_delay'])])
+	LIBS=$save_libs
+
+	AC_DEFINE(USE_PAM, 1, [Define to support Pluggable Authentication Modules])
+	AC_DEFINE_UNQUOTED(SHADOW_PAM_CONVERSATION, [$pam_conv_function],[PAM conversation to use])
+	AM_CONDITIONAL(USE_PAM, [true])
+
+	AC_MSG_CHECKING(use login and su access checking if PAM not used)
+	AC_MSG_RESULT(no)
+else
+	AC_DEFINE(SU_ACCESS, 1, [Define to support /etc/suauth su access control.])
+	AM_CONDITIONAL(USE_PAM, [false])
+	AC_MSG_CHECKING(use login and su access checking if PAM not used)
+	AC_MSG_RESULT(yes)
+fi
+
+if test "$enable_acct_tools_setuid" != "no"; then
+	if test "$with_libpam" != "yes"; then
+		if test "$enable_acct_tools_setuid" = "yes"; then
+			AC_MSG_ERROR(PAM support is required for --enable-account-tools-setuid)
+		else
+			enable_acct_tools_setuid="no"
+		fi
+	else
+		enable_acct_tools_setuid="yes"
+	fi
+	if test "$enable_acct_tools_setuid" = "yes"; then
+		AC_DEFINE(ACCT_TOOLS_SETUID,
+		          1,
+		          [Define if account management tools should be installed setuid and authenticate the callers])
+	fi
+fi
+AM_CONDITIONAL(ACCT_TOOLS_SETUID, test "x$enable_acct_tools_setuid" = "xyes")
+
+
+AC_ARG_WITH(fcaps,
+	[AS_HELP_STRING([--with-fcaps], [use file capabilities instead of suid binaries for newuidmap/newgidmap @<:@default=no@:>@])],
+	[with_fcaps=$withval], [with_fcaps=no])
+AM_CONDITIONAL(FCAPS, test "x$with_fcaps" = "xyes")
+
+if test "x$with_fcaps" = "xyes"; then
+	AC_CHECK_PROGS(capcmd, "setcap")
+	if test "x$capcmd" = "x" ; then
+		AC_MSG_ERROR([setcap command not available])
+	fi
+fi
+
+AC_SUBST(LIBSKEY)
+AC_SUBST(LIBMD)
+if test "$with_skey" = "yes"; then
+	AC_CHECK_LIB(md, MD5Init, [LIBMD=-lmd])
+	AC_CHECK_LIB(skey, skeychallenge, [LIBSKEY=-lskey],
+		[AC_MSG_ERROR([libskey missing. You can download S/Key source code from http://rsync1.it.gentoo.org/gentoo/distfiles/skey-1.1.5.tar.bz2])])
+	AC_DEFINE(SKEY, 1, [Define to support S/Key logins.])
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+		#include <stdio.h>
+		#include <skey.h>
+	]], [[
+		skeychallenge((void*)0, (void*)0, (void*)0, 0);
+	]])],[AC_DEFINE(SKEY_BSD_STYLE, 1, [Define to support newer BSD S/Key API])],[])
+fi
+
+AC_CHECK_FUNC(fgetpwent_r, [AC_DEFINE(HAVE_FGETPWENT_R, 1, [Defined to 1 if you have the declaration of 'fgetpwent_r'])])
+
+AC_DEFINE_UNQUOTED(SHELL, ["$SHELL"], [The default shell.])
+
+AM_GNU_GETTEXT_VERSION([0.19])
+AM_GNU_GETTEXT([external], [need-ngettext])
+AM_CONDITIONAL(USE_NLS, test "x$USE_NLS" = "xyes")
+
+AC_CONFIG_FILES([
+	Makefile
+	po/Makefile.in
+	doc/Makefile
+	man/Makefile
+	man/config.xml
+	man/po/Makefile
+	man/cs/Makefile
+	man/da/Makefile
+	man/de/Makefile
+	man/es/Makefile
+	man/fi/Makefile
+	man/fr/Makefile
+	man/hu/Makefile
+	man/id/Makefile
+	man/it/Makefile
+	man/ja/Makefile
+	man/ko/Makefile
+	man/pl/Makefile
+	man/pt_BR/Makefile
+	man/ru/Makefile
+	man/sv/Makefile
+	man/tr/Makefile
+	man/uk/Makefile
+	man/zh_CN/Makefile
+	man/zh_TW/Makefile
+	lib/Makefile
+	libsubid/Makefile
+	libsubid/subid.h
+	src/Makefile
+	contrib/Makefile
+	etc/Makefile
+	etc/pam.d/Makefile
+	etc/shadow-maint/Makefile
+	tests/unit/Makefile
+])
+AC_OUTPUT
+
+echo
+echo "shadow will be compiled with the following features:"
+echo
+echo "	auditing support:		$with_audit"
+echo "	PAM support:			$with_libpam"
+if test "$with_libpam" = "yes"; then
+echo "	suid account management tools:	$enable_acct_tools_setuid"
+fi
+echo "	SELinux support:		$with_selinux"
+echo "	BtrFS support:			$with_btrfs"
+echo "	ACL support:			$with_acl"
+echo "	Extended Attributes support:	$with_attr"
+echo "	tcb support (incomplete):	$with_tcb"
+echo "	shadow group support:		$enable_shadowgrp"
+echo "	S/Key support:			$with_skey"
+echo "	SHA passwords encryption:	$with_sha_crypt"
+echo "	bcrypt passwords encryption:	$with_bcrypt"
+echo "	yescrypt passwords encryption:	$with_yescrypt"
+echo "	nscd support:			$with_nscd"
+echo "	sssd support:			$with_sssd"
+echo "	subordinate IDs support:	$enable_subids"
+echo "	enable lastlog:			$enable_lastlog"
+echo "	enable logind:			$enable_logind"
+echo "	use file caps:			$with_fcaps"
+echo "	install su:			$with_su"
+echo "	enabled vendor dir:             $enable_vendordir"
+echo

contrib/Makefile.am

@@ -0,0 +1,4 @@
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+
+EXTRA_DIST = README adduser.c adduser.sh adduser2.sh

contrib/Makefile.in

@@ -0,0 +1,507 @@
+# Makefile.in generated by automake 1.16.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+VPATH = @srcdir@
+am__is_gnu_make = { \
+  if test -z '$(MAKELEVEL)'; then \
+    false; \
+  elif test -n '$(MAKE_HOST)'; then \
+    true; \
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+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
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+      ?) ;; \
+      *) echo "am__make_running_with_option: internal error: invalid" \
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+  else \
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+        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
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+  fi; \
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+      *=*|--*) continue;; \
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+      -[dEDm]) skip_next=yes;; \
+      -[JT]) skip_next=yes;; \
+    esac; \
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+.NOEXPORT:

contrib/README

@@ -0,0 +1,7 @@
+People keep sending various adduser programs and scripts...  They are
+all in this directory.  I haven't tested them, use at your own risk.
+Anyway, the best one I've seen so far is adduser-3.x from Debian.
+
+udbachk.tgz is a passwd/group/shadow file integrity checker.
+
+--marekm

contrib/adduser.c

@@ -0,0 +1,503 @@
+/****
+** 04/21/96
+** hacked even more, replaced gets() with something slightly harder to buffer
+** overflow. Added support for setting a default quota on new account, with
+** edquota -p. Other cleanups for security, I let some users run adduser suid
+** root to add new accounts. (overflow checks, clobber environment, valid 
+** shell checks, restrictions on gid + home dir settings).
+
+** Added max. username length. Used syslog() a bit for important events. 
+** Support to immediately expire account with passwd -e.
+
+** Called it version 2.0! Because I felt like it!
+
+** -- Chris, chris@ferret.lmh.ox.ac.uk
+
+** 03/17/96
+** hacked a bit more, removed unused code, cleaned up for gcc -Wall.
+** --marekm
+**
+** 02/26/96
+** modified to call shadow utils (useradd,chage,passwd) on shadowed 
+** systems - Cristian Gafton, gafton@sorosis.ro
+**
+** 6/27/95
+** shadow-adduser 1.4:
+**
+** now it copies the /etc/skel dir into the person's dir, 
+** makes the mail folders, changed some defaults and made a 'make 
+** install' just for the hell of it.
+**
+** Greg Gallagher
+** CIN.Net
+**
+** 1/28/95
+** shadow-adduser 1.3:
+** 
+** Basically a bug-fix on my additions in 1.2.  Thanks to Terry Stewart 
+** (stew@texas.net) for pointing out one of the many idiotic bugs I introduced.
+** It was such a stupid bug that I would have never seen it myself.
+**
+**                                Brandon
+*****
+** 01/27/95
+** 
+** shadow-adduser 1.2:
+** I took the C source from adduser-shadow (credits are below) and made
+** it a little more worthwhile.  Many small changes... Here's
+** the ones I can remember:
+** 
+** Removed support for non-shadowed systems (if you don't have shadow,
+**     use the original adduser, don't get this shadow version!)
+** Added support for the correct /etc/shadow fields (Min days before
+**     password change, max days before password change, Warning days,
+**     and how many days from expiry date does the account go invalid)
+**     The previous version just left all of those fields blank.
+**     There is still one field left (expiry date for the account, period)
+**     which I have left blank because I do not use it and didn't want to
+**     spend any more time on this.  I'm sure someone will put it in and
+**     tack another plethora of credits on here. :)
+** Added in the password date field, which should always reflect the last
+**     date the password was changed, for expiry purposes.  "passwd" always
+**     updates this field, so the adduser program should set it up right
+**     initially (or a user could keep their initial password forever ;)
+**     The number is in days since Jan 1st, 1970.
+**
+**                       Have fun with it, and someone please make
+**                       a real version(this is still just a hack)
+**                       for us all to use (and Email it to me???)
+**
+**                               Brandon
+**                                  photon@usis.com
+**
+***** 
+** adduser 1.0: add a new user account (For systems not using shadow)
+** With a nice little interface and a will to do all the work for you.
+**
+** Craig Hagan
+** hagan@opine.cs.umass.edu
+**
+** Modified to really work, look clean, and find unused uid by Chris Cappuccio
+** chris@slinky.cs.umass.edu
+**
+*****
+**
+** 01/19/95
+**
+** FURTHER modifications to enable shadow passwd support (kludged, but
+** no more so than the original)  by Dan Crowson - dcrowson@mo.net
+**
+** Search on DAN for all changes...
+**
+*****
+**
+** cc -O -o adduser adduser.c
+** Use gcc if you have it... (political reasons beyond my control) (chris)
+**
+** I've gotten this program to work with success under Linux (without
+** shadow) and SunOS 4.1.3. I would assume it should work pretty well
+** on any system that uses no shadow. (chris)
+**
+** If you have no crypt() then try
+** cc -DNO_CRYPT -O -o adduser adduser.c xfdes.c
+** I'm not sure how login operates with no crypt()... I guess
+** the same way we're doing it here.
+*/
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <pwd.h>
+#include <grp.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/timeb.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <syslog.h>
+
+#include "string/strcmp/streq.h"
+
+
+#define IMMEDIATE_CHANGE	/* Expire newly created password, must be changed
+				 * immediately upon next login */
+#define HAVE_QUOTAS		/* Obvious */
+#define EXPIRE_VALS_SET		/* If defined, 'normal' users can't change 
+				 * password expiry values (if running suid root) */
+
+#define HAVE_GETUSERSHELL	/* FIXME: Isn't this defined in config.h too? */
+#define LOGGING			/* If we want to log various things to syslog */
+#define MAX_USRNAME  8		/* Longer usernames seem to work on my system....
+				 * But they're probably a poor idea */
+
+
+#define DEFAULT_SHELL	"/bin/bash"	/* because BASH is your friend */
+#define DEFAULT_HOME	"/home"
+#define USERADD_PATH	"/usr/sbin/useradd"
+#define CHAGE_PATH	"/usr/bin/chage"
+#define PASSWD_PATH	"/usr/bin/passwd"
+#define EDQUOTA_PATH	"/usr/sbin/edquota"
+#define QUOTA_DEFAULT	"defuser"
+#define DEFAULT_GROUP	100
+
+#define DEFAULT_MIN_PASS 0
+#define DEFAULT_MAX_PASS 100
+#define DEFAULT_WARN_PASS 14
+#define DEFAULT_USER_DIE 366
+
+void safeget (char *, int);
+
+void 
+main (void)
+{
+  char foo[32];
+  char usrname[32], person[32], dir[32], shell[32];
+  unsigned int group, min_pass, max_pass, warn_pass, user_die;
+  /* the group and uid of the new user */
+  int bad = 0, done = 0, correct = 0, olduid;
+  char cmd[255];
+  struct group *grp;
+
+  /* flags, in order:
+   * bad to see if the username is in /etc/passwd, or if strange stuff has
+   * been typed if the user might be put in group 0
+   * done allows the program to exit when a user has been added
+   * correct loops until a username is found that isn't in /etc/passwd
+   */
+
+  /* The real program starts HERE! */
+
+  if (geteuid () != 0)
+    {
+      printf ("It seems you don't have access to add a new user.  Try\n");
+      printf ("logging in as root or su root to gain superuser access.\n");
+      exit (1);
+    }
+
+  /* Sanity checks
+   */
+
+#ifdef LOGGING
+  openlog ("adduser", LOG_PID | LOG_CONS | LOG_NOWAIT, LOG_AUTH);
+  syslog (LOG_INFO, "invoked by user %s\n", getpwuid (getuid ())->pw_name);
+#endif
+
+  if (!(grp = getgrgid (DEFAULT_GROUP)))
+    {
+      printf ("Error: the default group %d does not exist on this system!\n",
+	      DEFAULT_GROUP);
+      printf ("adduser must be recompiled.\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: failed. no such default group\n");
+      closelog ();
+#endif
+      exit (1);
+    };
+
+  while (!correct)
+    {				/* loop until a "good" usrname is chosen */
+      while (!done)
+	{
+	  printf ("\nLogin to add (^C to quit): ");
+	  fflush (stdout);
+
+	  safeget (usrname, sizeof (usrname));
+
+	  if (!strlen (usrname))
+	    {
+	      printf ("Empty input.\n");
+	      done = 0;
+	      continue;
+	    };
+
+	  /* what I saw here before made me think maybe I was running DOS */
+	  /* might this be a solution? (chris) */
+	  if (strlen (usrname) > MAX_USRNAME)
+	    {
+	      printf ("That name is longer than the maximum of %d characters. Choose another.\n", MAX_USRNAME);
+	      done = 0;
+	    }
+	  else if (getpwnam (usrname) != NULL)
+	    {
+	      printf ("That name is in use, choose another.\n");
+	      done = 0;
+	    }
+	  else if (strchr (usrname, ' ') != NULL)
+	    {
+	      printf ("No spaces in username!!\n");
+	      done = 0;
+	    }
+	  else
+	    done = 1;
+	};			/* done, we have a valid new user name */
+
+      /* all set, get the rest of the stuff */
+      printf ("\nEditing information for new user [%s]\n", usrname);
+
+      printf ("\nFull Name [%s]: ", usrname);
+      fflush (stdout);
+      safeget (person, sizeof (person));
+      if (!strlen (person))
+	{
+	  bzero (person, sizeof (person));
+	  strcpy (person, usrname);
+	};
+
+      if (getuid () == 0)
+	{
+	  do
+	    {
+	      bad = 0;
+	      printf ("GID [%d]: ", DEFAULT_GROUP);
+	      fflush (stdout);
+	      safeget (foo, sizeof (foo));
+	      if (!strlen (foo))
+		group = DEFAULT_GROUP;
+	      else if (isdigit (*foo))
+		{
+		  group = atoi (foo);
+		  if (!(grp = getgrgid (group)))
+		    {
+		      printf ("unknown gid %s\n", foo);
+		      group = DEFAULT_GROUP;
+		      bad = 1;
+		    };
+		}
+	      else if ((grp = getgrnam (foo)))
+		group = grp->gr_gid;
+	      else
+		{
+		  printf ("unknown group %s\n", foo);
+		  group = DEFAULT_GROUP;
+		  bad = 1;
+		}
+	      if (group == 0)
+		{		/* You're not allowed to make root group users! */
+		  printf ("Creation of root group users not allowed (must be done by hand)\n");
+		  group = DEFAULT_GROUP;
+		  bad = 1;
+		};
+	    }
+	  while (bad);
+	}
+      else
+	{
+	  printf ("Group will be default of: %d\n", DEFAULT_GROUP);
+	  group = DEFAULT_GROUP;
+	}
+
+      if (getuid () == 0)
+	{
+	  printf ("\nIf home dir ends with a / then '%s' will be appended to it\n", usrname);
+	  printf ("Home Directory [%s/%s]: ", DEFAULT_HOME, usrname);
+	  fflush (stdout);
+	  safeget (dir, sizeof (dir));
+	  if (!strlen(dir))  /* hit return */
+	    sprintf(dir, "%s/%s", DEFAULT_HOME, usrname);
+	  else if (dir[strlen (dir) - 1] == '/')
+	    strcat(dir, usrname);
+	}
+      else
+	{
+	  printf ("\nHome directory will be %s/%s\n", DEFAULT_HOME, usrname);
+	  sprintf (dir, "%s/%s", DEFAULT_HOME, usrname);
+	}
+
+      printf ("\nShell [%s]: ", DEFAULT_SHELL);
+      fflush (stdout);
+      safeget (shell, sizeof (shell));
+      if (!strlen (shell))
+	strcpy(shell, DEFAULT_SHELL);
+      else
+	{
+	  char *sh;
+	  int ok = 0;
+#ifdef HAVE_GETUSERSHELL
+	  setusershell ();
+	  while ((sh = getusershell ()) != NULL)
+	    if (streq(shell, sh))
+	      ok = 1;
+	  endusershell ();
+#endif
+	  if (!ok)
+	    {
+	      if (getuid () == 0)
+		printf ("Warning: root allowed non standard shell\n");
+	      else
+		{
+		  printf ("Shell NOT in /etc/shells, DEFAULT used\n");
+		  strcpy(shell, DEFAULT_SHELL);
+		}
+	    }
+	}
+
+#ifdef EXPIRE_VALS_SET
+      if (getuid () == 0)
+	{
+#endif
+	  printf ("\nMin. Password Change Days [%d]: ", DEFAULT_MIN_PASS);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  if (strlen (foo) > 1)
+	    min_pass = DEFAULT_MIN_PASS;
+	  else
+	    min_pass = atoi (foo);
+
+	  printf ("Max. Password Change Days [%d]: ", DEFAULT_MAX_PASS);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  if (strlen (foo) > 1)
+	    max_pass = atoi (foo);
+	  else
+	    max_pass = DEFAULT_MAX_PASS;
+
+	  printf ("Password Warning Days [%d]: ", DEFAULT_WARN_PASS);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  warn_pass = atoi (foo);
+	  if (warn_pass == 0)
+
+	    warn_pass = DEFAULT_WARN_PASS;
+
+	  printf ("Days after Password Expiry for Account Locking [%d]: ", DEFAULT_USER_DIE);
+	  fflush (stdout);
+	  safeget (foo, sizeof (foo));
+	  user_die = atoi (foo);
+	  if (user_die == 0)
+	    user_die = DEFAULT_USER_DIE;
+
+#ifdef EXPIRE_VALS_SET
+	}
+      else
+	{
+	  printf ("\nSorry, account expiry values are set.\n");
+	  user_die = DEFAULT_USER_DIE;
+	  warn_pass = DEFAULT_WARN_PASS;
+	  max_pass = DEFAULT_MAX_PASS;
+	  min_pass = DEFAULT_MIN_PASS;
+	}
+#endif
+
+      printf ("\nInformation for new user [%s] [%s]:\n", usrname, person);
+      printf ("Home directory: [%s] Shell: [%s]\n", dir, shell);
+      printf ("GID: [%d]\n", group);
+      printf ("MinPass: [%d] MaxPass: [%d] WarnPass: [%d] UserExpire: [%d]\n",
+	      min_pass, max_pass, warn_pass, user_die);
+      printf ("\nIs this correct? [y/N]: ");
+      fflush (stdout);
+      safeget (foo, sizeof (foo));
+
+      done = bad = correct = (foo[0] == 'y' || foo[0] == 'Y');
+
+      if (bad != 1)
+	printf ("\nUser [%s] not added\n", usrname);
+    }
+
+  /* Clobber the environment, I run this suid root sometimes to let 
+   * non root privileged accounts add users --chris */
+
+  *environ = NULL;
+
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s -g %d -d %s -s %s -c \"%s\" -m -k /etc/skel %s",
+	   USERADD_PATH, group, dir, shell, person, usrname);
+  printf ("Calling useradd to add new user:\n%s\n", cmd);
+  if (system (cmd))
+    {
+      printf ("User add failed!\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "could not add new user\n");
+      closelog ();
+#endif
+      exit (errno);
+    };
+
+  olduid = getuid ();	/* chage, passwd, edquota etc. require ruid = root
+			 */
+  setuid (0);
+
+  bzero (cmd, sizeof (cmd));
+
+  /* Chage runs suid root. => we need ruid root to run it with
+   * anything other than chage -l
+   */
+
+  sprintf (cmd, "%s -m %d -M %d -W %d -I %d %s", CHAGE_PATH,
+	   min_pass, max_pass, warn_pass, user_die, usrname);
+  printf ("%s\n", cmd);
+  if (system (cmd))
+    {
+      printf ("There was an error setting password expire values\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "password expire values could not be set\n");
+#endif
+    };
+
+  /* I want to add a user completely with one easy command --chris */
+
+#ifdef HAVE_QUOTAS
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s -p %s -u %s", EDQUOTA_PATH, QUOTA_DEFAULT, usrname);
+  printf ("%s\n", cmd);
+  if (system (cmd))
+    {
+      printf ("\nWarning: error setting quota\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: account created but NO quotas set!\n");
+#endif /* LOGGING */
+    }
+  else
+    printf ("\nDefault quota set.\n");
+#endif /* HAVE_QUOTAS */
+
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s %s", PASSWD_PATH, usrname);
+  if (system (cmd))
+    {
+      printf ("\nWarning: error setting password\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: password set failed!\n");
+#endif
+    }
+#ifdef IMMEDIATE_CHANGE
+  bzero (cmd, sizeof (cmd));
+  sprintf (cmd, "%s -e %s", PASSWD_PATH, usrname);
+  if (system (cmd))
+    {
+      printf ("\nWarning: error expiring password\n");
+#ifdef LOGGING
+      syslog (LOG_ERR, "warning: password expire failed!\n");
+#endif /* LOGGING */
+    }
+#endif /* IMMEDIATE_CHANGE */
+
+  setuid (olduid);
+
+#ifdef LOGGING
+  closelog ();
+#endif
+
+  printf ("\nDone.\n");
+}
+
+void 
+safeget (char *buf, int maxlen)
+{
+  int c, i = 0, bad = 0;
+  char *bstart = buf;
+  while ((c = getc (stdin)) != EOF && (c != '\n') && (++i < maxlen))
+    {
+      bad = (!isalnum (c) && (c != '_') && (c != ' '));
+      *(buf++) = c;
+    }
+  stpcpy(buf, "");
+
+  if (bad)
+    {
+      printf ("\nString contained banned character. Please stick to alphanumerics.\n");
+      stpcpy(bstart, "");
+    }
+}
+

contrib/adduser.sh

@@ -0,0 +1,90 @@
+#!/bin/sh
+# adduser script for use with shadow passwords and useradd command.
+# by Hrvoje Dogan <hdogan@student.math.hr>, Dec 1995.
+
+echo -n "Login name for new user []:"
+read LOGIN
+if [ -z $LOGIN ]
+then echo "Come on, man, you can't leave the login field empty...";exit
+fi
+echo
+echo -n "User id for $LOGIN [ defaults to next available]:"
+read ID
+GUID="-u $ID"
+if [ -z $ID ] 
+then GUID=""
+fi
+
+echo
+echo -n "Initial group for $LOGIN [users]:"
+read GID
+GGID="-g $GID"
+if [ -z $GID ]
+then GGID=""
+fi
+
+echo
+echo -n "Additional groups for $LOGIN []:"
+read AGID
+GAGID="-G $AGID"
+if [ -z $AGID ]
+then GAGID=""
+fi
+
+echo
+echo -n "$LOGIN's home directory [/home/$LOGIN]:"
+read HME
+GHME="-d $HME"
+if [ -z $HME ]
+then GHME=""
+fi
+
+echo
+echo -n "$LOGIN's shell [/bin/bash]:"
+read SHL
+GSHL="-s $SHL"
+if [ -z $SHL ]
+then GSHL=""
+fi
+
+echo
+echo -n "$LOGIN's account expiry date (MM/DD/YY) []:"
+read EXP
+GEXP="-e $EXP"
+if [ -z $EXP ]
+then GEXP=""
+fi
+echo
+echo OK, I'm about to make a new account. Here's what you entered so far:
+echo New login name: $LOGIN
+if [ -z $GUID ] 
+then echo New UID: [Next available]
+else echo New UID: $UID
+fi
+if [ -z $GGID ]
+then echo Initial group: users
+else echo Initial group: $GID
+fi
+if [ -z $GAGID ]
+then echo Additional groups: [none]
+else echo Additional groups: $AGID
+fi
+if [ -z $GHME ]
+then echo Home directory: /home/$LOGIN
+else echo Home directory: $HME
+fi
+if [ -z $GSHL ]
+then echo Shell: /bin/bash
+else echo Shell: $SHL
+fi
+if [ -z $GEXP ]
+then echo Expiry date: [no expiration]
+else echo Expiry date: $EXP
+fi
+echo "This is it... if you want to bail out, you'd better do it now."
+read FOO
+echo Making new account...
+/usr/sbin/useradd $GHME -m $GEXP $GGID $GAGID $GSHL $GUID $LOGIN
+/usr/bin/chfn $LOGIN
+/usr/bin/passwd $LOGIN
+echo "Done..."

contrib/adduser2.sh

@@ -0,0 +1,743 @@
+#!/bin/bash
+#
+#  adduser			Interactive user adding program.
+#
+#  Copyright (C) 1996		Petri Mattila, Prihateam Networks
+#				petri@prihateam.fi
+#	
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2, or (at your option)
+#  any later version.
+#
+# Changes:
+#	220496	v0.01	Initial version
+#	230496	v0.02	More checks, embolden summary
+#	240496		Even more checks
+#	250496 		Help with ?
+#	040596	v0.03	Cleanups
+#	050596	v0.04	Bug fixes, expire date checks
+#	070596	v0.05	Iso-latin-1 names
+#
+
+## Defaults
+
+# default groups
+def_group="users"
+def_other_groups=""
+
+# default home directory
+def_home_dir=/home/users
+
+# default shell
+def_shell=/bin/tcsh
+
+# Default expiration date (mm/dd/yy)
+def_expire=""
+
+# default dates
+def_pwd_min=0
+def_pwd_max=90
+def_pwd_warn=14
+def_pwd_iact=14
+
+
+# possible UIDs
+uid_low=1000
+uid_high=64000
+
+# skel directory
+skel=/etc/skel
+
+# default mode for home directory
+def_mode=711
+
+# Regex, that the login name must meet, only ANSI characters
+login_regex='^[0-9a-zA-Z_-]*$'
+
+# Regex, that the user name must meet
+# ANSI version
+##name_regex='^[0-9a-zA-Z_-\ ]*$'
+# ISO-LATIN-1 version
+name_regex='^[0-9a-zA-ZÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöùúûüýþÿ_-\ ]*$'
+
+# set PATH
+export PATH="/bin:/sbin:/usr/bin:/usr/sbin"
+
+# Some special characters
+case "$TERM" in
+   vt*|ansi*|con*|xterm*|linux*)
+	S=''	# start embolden
+	E=''	# end embolden
+	;;
+   *)	
+	S=''
+	E=''
+	;;
+esac
+
+
+## Functions
+
+check_root() {
+	if test "$EUID" -ne 0
+	then
+		echo "You must be root to run this program."
+		exit 1
+	fi
+}
+
+check_user() {
+	local usr pwd uid gid name home sh
+
+	cat /etc/passwd | (
+		while IFS=":" read usr pwd uid gid name home sh
+		do
+			if test "$1" = "${usr}"
+			then
+				return 1
+			fi
+		done
+		return 0
+	)
+}
+
+check_group() {
+	local read grp pwd gid members
+
+	cat /etc/group | (
+		while IFS=":" read grp pwd gid members
+		do
+			if test "$1" = "${grp}"
+			then
+				return 1
+			fi
+		done
+		return 0
+	)
+}
+
+check_other_groups() {
+	local grp check IFS
+
+	check="$1"
+	IFS=","
+
+	set ${check}
+	for grp
+	do
+		if check_group "${grp}"
+		then
+			echo "Group ${grp} does not exist."
+			return 1
+		fi
+	done
+	return 0
+}		
+
+check_uid() {
+	local usr pwd uid gid name home sh
+	
+	cat /etc/passwd | (
+		while IFS=":" read usr pwd uid gid name home sh
+		do
+			if test "$1" = "${uid}"
+			then
+				return 1
+			fi
+		done
+		return 0
+	)
+}
+
+read_yn() {
+	local ans ynd
+	
+	ynd="$1"
+	
+	while :
+	do
+		read ans	
+		case "${ans}" in
+		      "") return ${ynd} ;;
+		    [nN]) return 1 ;;
+		    [yY]) return 0 ;;
+		       *) echo -n "Y or N, please ? " ;;
+		esac
+	done
+}
+
+read_login() {
+	echo
+	while :
+	do
+		echo -n "Login: ${def_login:+[${def_login}] }"
+		read login
+		
+		if test "${login}" = '?'
+		then
+			less /etc/passwd
+			echo
+			continue
+		fi
+
+		if test -z "${login}" -a -n "${def_login}"
+		then
+			login="${def_login}"
+			echo "Using ${login}"
+			return
+		fi
+		
+		if test "${#login}" -gt 8
+		then
+			echo "Login must be at most 8 characters long"
+			continue
+		fi
+		
+		if test "${#login}" -lt 2
+		then
+			echo "Login must be at least 2 characters long"
+			continue
+		fi
+		
+		if ! expr "${login}" : "${login_regex}" &> /dev/null
+		then
+			echo "Please use letters, numbers and special characters _-,."
+			continue
+		fi
+		
+		if ! check_user "${login}"
+		then
+			echo "Username ${login} is already in use"
+			continue
+		fi
+		
+		def_login="${login}"
+		return
+	done
+}
+
+read_name () {
+	echo
+	while :
+	do
+		echo -n "Real name: ${def_name:+[${def_name}] }"
+		read name
+		
+		if test "${name}" = '?'
+		then
+			less /etc/passwd
+			echo
+			continue
+		fi
+
+		if test -z "${name}" -a -n "${def_name}"
+		then
+			name="${def_name}"
+			echo "Using ${name}"
+		fi
+
+		if test "${#name}" -gt 32
+		then
+			echo "Name should be at most 32 characters long"
+			continue
+		fi
+
+		if ! expr "${name}" : "${name_regex}" &> /dev/null
+		then
+			echo "Please use letters, numbers, spaces and special characters ,._-"
+			continue
+		fi
+		
+		def_name="${name}"
+		return
+	done
+}
+
+read_home() {
+	local x
+	
+	echo
+	while :
+	do
+		echo -n "Home Directory: [${def_home_dir}/${login}] "
+		read home
+		
+		if test -z "${home}"
+		then
+			home="${def_home_dir}/${login}"
+			echo "Using ${home}"
+		fi
+		
+		if ! expr "${home}" : '^[0-9a-zA-Z,._-\/]*$' &> /dev/null
+		then
+			echo "Please use letters, numbers, spaces and special characters ,._-/"
+			continue
+		fi
+		
+		x="$(basename ${home})"
+		if test "${x}" != "${login}"
+		then
+			echo "Warning: you are about to use different login name and home directory."
+		fi
+		
+		x="$(dirname ${home})"
+		if ! test -d "${x}"
+		then
+			echo "Directory ${x} does not exist."
+			echo "If you still want to use it, please make it manually."
+			continue
+		fi
+		
+		def_home_dir="${x}"
+		return
+	done
+}
+
+read_shell () {
+	local x
+
+	echo
+	while :
+	do
+		echo -n "Shell: [${def_shell}] "
+		read shell
+		
+		if test -z "${shell}"
+		then
+			shell="${def_shell}"
+			echo "Using ${shell}"
+		fi
+		
+		for x in $(cat /etc/shells)
+		do
+			if test "${x}" = "${shell}"
+			then
+				def_shell="${shell}"
+				return
+			fi
+		done
+
+		echo "Possible shells are:"
+		cat /etc/shells
+	done
+}
+
+read_group () {
+	echo
+	while :
+	do
+		echo -n "Group: [${def_group}] "
+		read group
+		
+		if test -z "${group}"
+		then
+			group="${def_group}"
+			echo "Using ${group}"
+		fi
+		
+		if test "${group}" = '?'
+		then
+			less /etc/group
+			echo
+			continue
+		fi
+
+		if check_group "${group}"
+		then
+			echo "Group ${group} does not exist."
+			continue
+		fi
+		
+		def_group="${group}"
+		return
+	done
+}
+
+read_other_groups () {
+	echo
+	while :
+	do
+		echo -n "Other groups: [${def_og:-none}] "
+		read other_groups
+		
+		if test "${other_groups}" = '?'
+		then
+			less /etc/group
+			echo
+			continue
+		fi
+
+		if test -z "${other_groups}"
+		then
+			if test -n "${def_og}"
+			then
+				other_groups="${def_og}"
+				echo "Using ${other_groups}"
+			else	
+				echo "No other groups"
+				return
+			fi
+		fi
+		
+		
+		if ! check_other_groups "${other_groups}"
+		then
+			continue
+		fi
+		
+		def_og="${other_groups}"
+		return
+	done
+}
+
+read_uid () {
+	echo
+	while :
+	do
+		echo -n "uid: [first free] "
+		read uid
+			
+		if test -z "${uid}"
+		then
+			echo "Using first free UID."
+			return
+		fi
+		
+		if test "${uid}" = '?'
+		then
+			less /etc/passwd
+			echo
+			continue
+		fi
+
+		if ! expr "${uid}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${uid}" -lt "${uid_low}"
+		then
+			echo "UID must be greater than ${uid_low}"
+			continue
+		fi
+		if test "${uid}" -gt "${uid_high}"
+		then
+			echo "UID must be smaller than ${uid_high}"
+			continue
+		fi
+		if ! check_uid "${uid}"
+		then
+			echo "UID ${uid} is already in use"
+			continue
+		fi
+		
+		return
+	done
+}
+
+read_max_valid_days() {
+	echo
+	while :
+	do
+		echo -en "Maximum days between password changes: [${def_pwd_max}] "
+		read max_days
+		
+		if test -z "${max_days}"
+		then
+			max_days="${def_pwd_max}"
+			echo "Using ${max_days}"
+			return
+		fi
+		
+		if ! expr "${max_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${max_days}" -lt 7
+		then
+			echo "Warning: you are using a value shorter than a week."
+		fi
+		
+		def_pwd_max="${max_days}"
+		return	
+	done
+}
+
+read_min_valid_days() {
+	echo
+	while :
+	do
+		echo -en "Minimum days between password changes: [${def_pwd_min}] "
+		read min_days
+		
+		if test -z "${min_days}"
+		then
+			min_days="${def_pwd_min}"
+			echo "Using ${min_days}"
+			return
+		fi
+		
+		if ! expr "${min_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${min_days}" -gt 7
+		then
+			echo "Warning: you are using a value longer than a week."
+		fi
+		
+		def_pwd_min="${min_days}"
+		return	
+	done
+}
+
+read_warning_days() {
+	echo
+	while :
+	do
+		echo -en "Number of warning days before password expires: [${def_pwd_warn}] "
+		read warn_days
+		
+		if test -z "${warn_days}"
+		then
+			warn_days="${def_pwd_warn}"
+			echo "Using ${warn_days}"
+		fi
+
+		if ! expr "${warn_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${warn_days}" -gt 14
+		then
+			echo "Warning: you are using a value longer than two week."
+		fi
+		
+		def_pwd_warn="${warn_days}"
+		return	
+	done
+}
+
+
+read_inactive_days() {
+	echo
+	while :
+	do
+		echo -en "Number of usable days after expiration: [${def_pwd_iact}] "
+		read iact_days
+		
+		if test -z "${iact_days}"
+		then
+			iact_days="${def_pwd_iact}"
+			echo "Using ${iact_days}"
+			return
+		fi
+		if ! expr "${iact_days}" : '^[0-9]+$' &> /dev/null
+		then
+			echo "Please use numbers only."
+			continue
+		fi
+		if test "${iact_days}" -gt 14
+		then
+			echo "Warning: you are using a value that is more than two weeks."
+		fi
+		
+		def_pwd_iact="${iact_days}"
+		return	
+	done
+}
+
+read_expire_date() {
+	local ans
+	
+	echo
+	while :
+	do
+		echo -en "Expire date of this account (mm/dd/yy): [${def_expire:-never}] "
+		read ans
+		
+		if test -z "${ans}"
+		then
+			if test -z "${def_expire}"
+			then
+				ans="never"
+			else
+				ans="${def_expire}"
+				echo "Using ${def_expire}"
+			fi
+		fi
+		
+		if test "${ans}" = "never"
+		then
+			echo "Account will never expire."
+			def_expire=""
+			expire=""
+			return
+		fi
+
+		if ! expr "${ans}" : '^[0-9][0-9]/[0-9][0-9]/[0-9][0-9]$' &> /dev/null
+		then
+			echo "Please use format mm/dd/yy"
+			continue
+		fi
+		
+		if ! expire_date="$(date -d ${ans} '+%A, %B %d %Y')"
+		then
+			continue
+		fi
+		
+		def_expire="${expire}"
+		return	
+	done
+}
+
+read_passwd_yn() {
+	echo -en "\nDo you want to set password [Y/n] ? "
+	if read_yn 0
+	then
+		set_pwd="YES"
+	else
+		set_pwd=""
+	fi
+}
+
+
+print_values() {
+
+clear
+cat << EOM
+
+Login:        ${S}${login}${E}
+Group:        ${S}${group}${E}
+Other groups: ${S}${other_groups:-[none]}${E}
+
+Real Name:    ${S}${name}${E}
+
+uid:          ${S}${uid:-[first free]}${E}
+home:         ${S}${home}${E}
+shell:        ${S}${shell}${E}
+
+Account expiration date:                   ${S}${expire_date:-never}${E}
+Minimum days between password changes:     ${S}${min_days}${E}
+Maximum days between password changes:     ${S}${max_days}${E}
+Number of usable days after expiration:    ${S}${iact_days}${E}
+Number of warning days before expiration:  ${S}${warn_days}${E}
+
+${S}${set_pwd:+Set password for this account.}${E}
+
+EOM
+}
+
+set_user() {
+	if ! useradd \
+		-c "${name}" \
+		-d "${home}" \
+		-g "${group}" \
+		-s "${shell}" \
+		${expire:+-e ${expire}} \
+		${uid:+-u ${uid}} \
+		${other_groups:+-G ${other_groups}} \
+		${login}
+	then
+		echo "Error ($?) in useradd...exiting..."
+		exit 1
+	fi
+}
+
+set_aging() {
+	if ! passwd \
+		-x ${max_days} \
+		-n ${min_days} \
+		-w ${warn_days} \
+		-i ${iact_days} \
+		${login}
+	then
+		echo "Error ($?) in setting password aging...exiting..." 
+		exit 1
+	fi
+}
+
+set_password() {
+	if test -n "${set_pwd}"
+	then
+		echo
+		passwd ${login}
+		echo
+	fi
+}	
+
+set_system() {
+	if test -d "${home}"
+	then
+		echo "Directory ${home} already exists."
+		echo "Skeleton files not copied."
+		return
+	fi
+	
+	echo -n "Copying skeleton files..."
+	( 
+	  mkdir ${home}
+	  cd ${skel} && cp -af . ${home}
+	  chmod ${def_mode} ${home}
+	  chown -R ${login}:${group} ${home}
+	)
+	echo "done."
+
+	## Add your own stuff here:
+	echo -n "Setting up other files..."
+	(
+	  mailbox="/var/spool/mail/${login}"
+	  touch ${mailbox}
+	  chown "${login}:mail" ${mailbox}
+	  chmod 600 ${mailbox}
+	)
+	echo "done."
+}
+
+
+read_values() {
+	clear
+	echo -e "\nPlease answer the following questions about the new user to be added."
+	
+	while :
+	do
+		read_login
+		read_name
+		read_group
+		read_other_groups
+		read_home
+		read_shell
+		read_uid
+		read_expire_date
+		read_max_valid_days
+		read_min_valid_days
+		read_warning_days
+		read_inactive_days
+		read_passwd_yn
+
+		print_values
+		
+		echo -n "Is this correct [N/y] ? "
+		read_yn 1 && return
+	done
+}
+
+
+main() {
+	check_root
+	read_values
+	set_user
+	set_aging
+	set_system
+	set_password
+}
+
+
+## Run it 8-)
+main
+
+# End.

depcomp

@@ -0,0 +1,791 @@
+#! /bin/sh
+# depcomp - compile a program generating dependencies as side-effects
+
+scriptversion=2018-03-07.03; # UTC
+
+# Copyright (C) 1999-2021 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
+
+case $1 in
+  '')
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: depcomp [--help] [--version] PROGRAM [ARGS]
+
+Run PROGRAMS ARGS to compile a file, generating dependencies
+as side-effects.
+
+Environment variables:
+  depmode     Dependency tracking mode.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
+  DEPDIR      directory where to store dependencies.
+  depfile     Dependency file to output.
+  tmpdepfile  Temporary file to use when outputting dependencies.
+  libtool     Whether libtool is used (yes/no).
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "depcomp $scriptversion"
+    exit $?
+    ;;
+esac
+
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
+if test -z "$depmode" || test -z "$source" || test -z "$object"; then
+  echo "depcomp: Variables source, object and depmode must be set" 1>&2
+  exit 1
+fi
+
+# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
+depfile=${depfile-`echo "$object" |
+  sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
+tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
+
+rm -f "$tmpdepfile"
+
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
+# Some modes work just like other modes, but use different flags.  We
+# parameterize here, but still list the modes in the big case below,
+# to make depend.m4 easier to write.  Note that we *cannot* use a case
+# here, because this file can only contain one case statement.
+if test "$depmode" = hp; then
+  # HP compiler uses -M and no extra arg.
+  gccflag=-M
+  depmode=gcc
+fi
+
+if test "$depmode" = dashXmstdout; then
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
+fi
+
+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$depmode" = msvc7msys; then
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc
+fi
+
+case "$depmode" in
+gcc3)
+## gcc 3 implements dependency tracking that does exactly what
+## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
+## it if -MD -MP comes after the -MF stuff.  Hmm.
+## Unfortunately, FreeBSD c89 acceptance of flags depends upon
+## the command line argument order; so add the flags where they
+## appear in depend2.am.  Note that the slowdown incurred here
+## affects only configure: in makefiles, %FASTDEP% shortcuts this.
+  for arg
+  do
+    case $arg in
+    -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
+    *)  set fnord "$@" "$arg" ;;
+    esac
+    shift # fnord
+    shift # $arg
+  done
+  "$@"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  mv "$tmpdepfile" "$depfile"
+  ;;
+
+gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
+## There are various ways to get dependency output from gcc.  Here's
+## why we pick this rather obscure method:
+## - Don't want to use -MD because we'd like the dependencies to end
+##   up in a subdir.  Having to rename by hand is ugly.
+##   (We might end up doing this anyway to support other compilers.)
+## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
+## - Using -M directly means running the compiler twice (even worse
+##   than renaming).
+  if test -z "$gccflag"; then
+    gccflag=-MD,
+  fi
+  "$@" -Wp,"$gccflag$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The second -e expression handles DOS-style file names with drive
+  # letters.
+  sed -e 's/^[^:]*: / /' \
+      -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
+## This next piece of magic avoids the "deleted header file" problem.
+## The problem is that when a header file which appears in a .P file
+## is deleted, the dependency causes make to die (because there is
+## typically no way to rebuild the header).  We avoid this by adding
+## dummy dependencies for each header file.  Too bad gcc doesn't do
+## this for us directly.
+## Some versions of gcc put a space before the ':'.  On the theory
+## that the space means something, we add a space to the output as
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
+## Some versions of the HPUX 10.20 sed can't process this invocation
+## correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+sgi)
+  if test "$libtool" = yes; then
+    "$@" "-Wp,-MDupdate,$tmpdepfile"
+  else
+    "$@" -MDupdate "$tmpdepfile"
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+
+  if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
+    echo "$object : \\" > "$depfile"
+    # Clip off the initial element (the dependent).  Don't try to be
+    # clever and replace this with sed code, as IRIX sed won't handle
+    # lines with more than a fixed number of characters (4096 in
+    # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
+    # the IRIX cc adds comments like '#:fec' to the end of the
+    # dependency line.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
+    echo >> "$depfile"
+    # The second pass generates a dummy entry for each header file.
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile"
+  ;;
+
+xlc)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
+aix)
+  # The C for AIX Compiler uses -M and outputs the dependencies
+  # in a .u file.  In older versions, this file always lives in the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
+  # start of each line; $object doesn't have directory information.
+  # Version 6 uses the directory in both cases.
+  set_dir_from "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$base.u
+    tmpdepfile3=$dir.libs/$base.u
+    "$@" -Wc,-M
+  else
+    tmpdepfile1=$dir$base.u
+    tmpdepfile2=$dir$base.u
+    tmpdepfile3=$dir$base.u
+    "$@" -M
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  # Each line is of the form `foo.o: dependent.h',
+  # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # `$object: dependent.h' and one to simply `dependent.h:'.
+  sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
+  # Some versions of the HPUX 10.20 sed can't process this invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+hp2)
+  # The "hp" stanza above does not work with aCC (C++) and HP's ia64
+  # compilers, which have integrated preprocessors.  The correct option
+  # to use with these is +Maked; it writes dependencies to a file named
+  # 'foo.d', which lands next to the object file, wherever that
+  # happens to be.
+  # Much of this is similar to the tru64 case; see comments there.
+  set_dir_from  "$object"
+  set_base_from "$object"
+  if test "$libtool" = yes; then
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir.libs/$base.d
+    "$@" -Wc,+Maked
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    "$@" +Maked
+  fi
+  stat=$?
+  if test $stat -ne 0; then
+     rm -f "$tmpdepfile1" "$tmpdepfile2"
+     exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  if test -f "$tmpdepfile"; then
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
+    sed -ne '2,${
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
+  else
+    make_dummy_depfile
+  fi
+  rm -f "$tmpdepfile" "$tmpdepfile2"
+  ;;
+
+tru64)
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
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+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
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+    tmpdepfile2=$dir$base.d
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+  stat=$?
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+    exit $stat
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+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
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+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
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+  grep -v '^Note: including file: ' "$tmpdepfile"
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+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
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+  # Some versions of the HPUX 10.20 sed can't process the last invocation
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+  "$@" || exit $?
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+  # Remove the call to Libtool.
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+  # Remove '-o $object'.
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+  for arg
+  do
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+      ;;
+    $object)
+      shift
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+      set fnord "$@" "$arg"
+      shift # fnord
+      shift # $arg
+      ;;
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+  "$@" -E \
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+  rm -f "$tmpdepfile"
+  ;;
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+msvisualcpp)
+  # Important note: in order to support this mode, a compiler *must*
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+  # Remove the call to Libtool.
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+none)
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+  ;;
+
+*)
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+  ;;
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+
+exit 0
+
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+# eval: (add-hook 'before-save-hook 'time-stamp)
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+# time-stamp-format: "%:y-%02m-%02d.%02H"
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doc/README.limits

@@ -0,0 +1,65 @@
+
+ABOUT shadow-login limits:
+
+This code is merged into shadow login program from the original LShell 2.01
+written by Joel Katz. The port and some additional features have been added
+by Cristian Gafton (gafton@sorosis.ro).
+
+
+Changes:
+	- 96/04/16
+		- {spaces,tabs} allowed within limits string
+		- Warn via syslog multiple default limits
+		- added few paragraphs to the login man page
+	- 96/04/14
+		- code merged into lmain.c --cristiang
+
+TODO:	- support groups in the limits file
+	  (only usernames are supported at this moment :-( )
+
+Setting user limits for shadow login program
+
+First, make a root-only-readable file (/etc/limits by default or LIMITS_FILE
+defined config.h) that describes the resource limits you wish to impose. By
+default no quotas are imposed on 'root'. In fact, there is no way to impose
+limits via this procedure to root-equiv accounts (accounts with UID 0).
+
+Each line describes a limit for a user in the form:
+
+	user LIMITS_STRING
+
+The LIMITS_STRING is a string of a concatenated list of resource limits.
+Each limit consists of a letter identifier followed by a numerical limit.
+The valid identifiers are:
+
+	A: max address space (KB)
+	C: max core file size (KB)
+	D: max data size (KB)
+	F: maximum filesize (KB)
+	M: max locked-in-memory address space (KB)
+	N: max number of open files
+	R: max resident set size (KB)
+	S: max stack size (KB)
+	T: max CPU time (MIN)
+	U: max number of processes
+	L: max number of logins for this user
+
+For example, L2D2048N5 is a valid LIMITS_STRING. For reading convenience,
+the following entries are equivalent:
+
+username L2D2048N5
+username L2 D2048 N5
+
+Be aware that after <username> the rest of the line is considered a limit
+string, thus comments are not allowed. A invalid limits string will be
+rejected (not considered) by the login program.
+
+The default entry is denoted by username '*'. If you have multiple 'default'
+entries in your LIMITS_FILE, then the last one will be used as the default
+entry.
+
+To completely disable limits for a user, a single dash (-) will do.
+
+Also, please note that all limit settings are set PER LOGIN.  They are
+not global, nor are they permanent.  Perhaps global limits will come, but
+for now this will have to do ;)

etc/Makefile.am

@@ -0,0 +1,23 @@
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+
+sysconf_DATA = login.defs
+
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+default_DATA =
+
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+	limits \
+	login.access
+
+if !USE_PAM
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+endif
+
+EXTRA_DIST = \
+	$(nonpam_files) \
+	$(sysconf_DATA) \
+	$(default_DATA)
+
+SUBDIRS = pam.d shadow-maint

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+	done
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+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
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+	while read files; do \
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+	done
+
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+	  if test -f "$$i"; then \
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+
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+
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+	  dist_files=`for file in $$list; do echo $$file; done | \
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+			   sort -u` ;; \
+	esac; \
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+	  if test -d $$d/$$file; then \
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+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+	fi
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+
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+	@echo "it deletes files that may require special tools to rebuild."
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+
+
+# 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:

etc/limits

@@ -0,0 +1,30 @@
+# /etc/limits contains user resource limits.
+# See limits(5).
+#
+# Format:
+# <username> <limits-string>
+#
+# default entry is '*' for username
+#
+# Valid flags are:
+# A: max address space (KB)
+# C: max core file size (KB)
+# D: max data size (KB)
+# F: maximum filesize (KB)
+# M: max locked-in-memory address space (KB) [only for root on Linux 2.0.x]
+# N: max number of open files
+# R: max resident set size (KB) [no effect on Linux 2.0.x]
+# S: max stack size (KB)
+# T: max CPU time (MIN)
+# U: max number of processes
+# L: max number of logins for this user
+# I: max nice value (0..39 translates to 20..-19)
+# O: max real time priority (0..MAX_RT_PRIO)
+#
+# Examples:
+# the default entry
+#* L2 D6144 R2048 S2048 U32 N32 F16384 T5 C0 I20 O0
+# another way of suspending a user login
+#guest   L0
+# this account has no limits
+#sysadm  -

etc/login.access

@@ -0,0 +1,54 @@
+# $Id$
+#
+# Login access control table.
+#
+# When someone logs in, the table is scanned for the first entry that
+# matches the (user, host) combination, or, in case of non-networked
+# logins, the first entry that matches the (user, tty) combination.  The
+# permissions field of that table entry determines whether the login will
+# be accepted or refused.
+#
+# Format of the login access control table is three fields separated by a
+# ":" character:
+#
+# 	permission : users : origins
+#
+# The first field should be a "+" (access granted) or "-" (access denied)
+# character.
+#
+# The second field should be a list of one or more login names, group
+# names, or ALL (always matches). A pattern of the form user@host is
+# matched when the login name matches the "user" part, and when the
+# "host" part matches the local machine name.
+#
+# The third field should be a list of one or more tty names (for
+# non-networked logins), host names, domain names (begin with "."), host
+# addresses, internet network numbers (end with "."), ALL (always
+# matches) or LOCAL (matches any string that does not contain a "."
+# character).
+#
+# If you run NIS you can use @netgroupname in host or user patterns; this
+# even works for @usergroup@@hostgroup patterns. Weird.
+#
+# The EXCEPT operator makes it possible to write very compact rules.
+#
+# The group file is searched only when a name does not match that of the
+# logged-in user. Only groups are matched in which users are explicitly
+# listed: the program does not look at a user's primary group id value.
+#
+##############################################################################
+#
+# Disallow console logins to all but a few accounts.
+#
+#-:ALL EXCEPT wheel shutdown sync:console
+#
+# Disallow non-local logins to privileged accounts (group wheel).
+#
+#-:wheel:ALL EXCEPT LOCAL .win.tue.nl
+#
+# Some accounts are not allowed to login from anywhere:
+#
+#-:wsbscaro wsbsecr wsbspac wsbsym wscosor wstaiwde:ALL
+#
+# All other accounts are allowed to login from anywhere.
+#

etc/login.defs

@@ -0,0 +1,473 @@
+#
+# /etc/login.defs - Configuration control definitions for the shadow package.
+#
+#	$Id$
+#
+
+#
+# Delay in seconds before being allowed another attempt after a login failure
+# Note: When PAM is used, some modules may enforce a minimum delay (e.g.
+#       pam_unix(8) enforces a 2s delay)
+#
+FAIL_DELAY		3
+
+#
+# Enable logging and display of /var/log/faillog login(1) failure info.
+#
+FAILLOG_ENAB		yes
+
+#
+# Enable display of unknown usernames when login(1) failures are recorded.
+#
+LOG_UNKFAIL_ENAB	no
+
+#
+# Enable logging of successful logins
+#
+LOG_OK_LOGINS		no
+
+#
+# Enable logging and display of /var/log/lastlog login(1) time info.
+#
+LASTLOG_ENAB		yes
+
+#
+# Limit the highest user ID number for which the lastlog entries should
+# be updated.
+#
+# No LASTLOG_UID_MAX means that there is no user ID limit for writing
+# lastlog entries.
+#
+#LASTLOG_UID_MAX
+
+#
+# Enable checking and display of mailbox status upon login.
+#
+# Disable if the shell startup files already check for mail
+# ("mailx -e" or equivalent).
+#
+MAIL_CHECK_ENAB		yes
+
+#
+# Enable additional checks upon password changes.
+#
+OBSCURE_CHECKS_ENAB	yes
+
+#
+# Enable checking of time restrictions specified in /etc/porttime.
+#
+PORTTIME_CHECKS_ENAB	yes
+
+#
+# Enable setting of ulimit, umask, and niceness from passwd(5) gecos field.
+#
+QUOTAS_ENAB		yes
+
+#
+# Enable "syslog" logging of su(1) activity - in addition to sulog file logging.
+# SYSLOG_SG_ENAB does the same for newgrp(1) and sg(1).
+#
+SYSLOG_SU_ENAB		yes
+SYSLOG_SG_ENAB		yes
+
+#
+# If defined, either full pathname of a file containing device names or
+# a ":" delimited list of device names.  Root logins will be allowed only
+# from these devices.
+#
+CONSOLE		/etc/securetty
+#CONSOLE	console:tty01:tty02:tty03:tty04
+
+#
+# If defined, all su(1) activity is logged to this file.
+#
+#SULOG_FILE	/var/log/sulog
+
+#
+# If defined, ":" delimited list of "message of the day" files to
+# be displayed upon login.
+#
+MOTD_FILE	/etc/motd
+#MOTD_FILE	/etc/motd:/usr/lib/news/news-motd
+
+#
+# If defined, this file will be output before each login(1) prompt.
+#
+#ISSUE_FILE	/etc/issue
+
+#
+# If defined, file which maps tty line to TERM environment parameter.
+# Each line of the file is in a format similar to "vt100  tty01".
+#
+#TTYTYPE_FILE	/etc/ttytype
+
+#
+# If defined, login(1) failures will be logged here in a utmp format.
+# last(1), when invoked as lastb(1), will read /var/log/btmp, so...
+#
+FTMP_FILE	/var/log/btmp
+
+#
+# If defined, name of file whose presence will inhibit non-root
+# logins.  The content of this file should be a message indicating
+# why logins are inhibited.
+#
+NOLOGINS_FILE	/etc/nologin
+
+#
+# If defined, the command name to display when running "su -".  For
+# example, if this is defined as "su" then ps(1) will display the
+# command as "-su".  If not defined, then ps(1) will display the
+# name of the shell actually being run, e.g. something like "-sh".
+#
+SU_NAME		su
+
+#
+# *REQUIRED*
+#   Directory where mailboxes reside, _or_ name of file, relative to the
+#   home directory.  If you _do_ define both, MAIL_DIR takes precedence.
+#
+MAIL_DIR	/var/spool/mail
+#MAIL_FILE	.mail
+
+#
+# If defined, file which inhibits all the usual chatter during the login
+# sequence.  If a full pathname, then hushed mode will be enabled if the
+# user's name or shell are found in the file.  If not a full pathname, then
+# hushed mode will be enabled if the file exists in the user's home directory.
+#
+HUSHLOGIN_FILE	.hushlogin
+#HUSHLOGIN_FILE	/etc/hushlogins
+
+#
+# If defined, either a TZ environment parameter spec or the
+# fully-rooted pathname of a file containing such a spec.
+#
+#ENV_TZ		TZ=CST6CDT
+#ENV_TZ		/etc/tzname
+
+#
+# If defined, an HZ environment parameter spec.
+#
+# for Linux/x86
+ENV_HZ		HZ=100
+# For Linux/Alpha...
+#ENV_HZ		HZ=1024
+
+#
+# *REQUIRED*  The default PATH settings, for superuser and normal users.
+#
+# (they are minimal, add the rest in the shell startup files)
+ENV_SUPATH	PATH=/sbin:/bin:/usr/sbin:/usr/bin
+ENV_PATH	PATH=/bin:/usr/bin
+
+#
+# Terminal permissions
+#
+#	TTYGROUP	Login tty will be assigned this group ownership.
+#	TTYPERM		Login tty will be set to this permission.
+#
+# If you have a write(1) program which is "setgid" to a special group
+# which owns the terminals, define TTYGROUP as the number of such group
+# and TTYPERM as 0620.  Otherwise leave TTYGROUP commented out and
+# set TTYPERM to either 622 or 600.
+#
+TTYGROUP	tty
+TTYPERM		0600
+
+#
+# Login configuration initializations:
+#
+#	ERASECHAR	Terminal ERASE character ('\010' = backspace).
+#	KILLCHAR	Terminal KILL character ('\025' = CTRL/U).
+#	ULIMIT		Default "ulimit" value.
+#
+# The ERASECHAR and KILLCHAR are used only on System V machines.
+# The ULIMIT is used only if the system supports it.
+# (now it works with setrlimit too; ulimit is in 512-byte units)
+#
+# Prefix these values with "0" to get octal, "0x" to get hexadecimal.
+#
+ERASECHAR	0177
+KILLCHAR	025
+#ULIMIT		2097152
+
+# Default initial "umask" value used by login(1) on non-PAM enabled systems.
+# Default "umask" value for pam_umask(8) on PAM enabled systems.
+# UMASK is also used by useradd(8) and newusers(8) to set the mode for new
+# home directories if HOME_MODE is not set.
+# 022 is the default value, but 027, or even 077, could be considered
+# for increased privacy. There is no One True Answer here: each sysadmin
+# must make up their mind.
+UMASK		022
+
+# HOME_MODE is used by useradd(8) and newusers(8) to set the mode for new
+# home directories.
+# If HOME_MODE is not set, the value of UMASK is used to create the mode.
+#HOME_MODE	0700
+
+#
+# Password aging controls:
+#
+#	PASS_MAX_DAYS	Maximum number of days a password may be used.
+#	PASS_MIN_DAYS	Minimum number of days allowed between password changes.
+#	PASS_MIN_LEN	Minimum acceptable password length.
+#	PASS_WARN_AGE	Number of days warning given before a password expires.
+#
+PASS_MAX_DAYS	99999
+PASS_MIN_DAYS	0
+PASS_MIN_LEN	5
+PASS_WARN_AGE	7
+
+#
+# If "yes", the user must be listed as a member of the first gid 0 group
+# in /etc/group (called "root" on most Linux systems) to be able to "su"
+# to uid 0 accounts.  If the group doesn't exist or is empty, no one
+# will be able to "su" to uid 0.
+#
+SU_WHEEL_ONLY	no
+
+#
+# Min/max values for automatic uid selection in useradd(8)
+#
+UID_MIN			 1000
+UID_MAX			60000
+# System accounts
+SYS_UID_MIN		  101
+SYS_UID_MAX		  999
+# Extra per user uids
+SUB_UID_MIN		   100000
+SUB_UID_MAX		600100000
+SUB_UID_COUNT		    65536
+
+#
+# Min/max values for automatic gid selection in groupadd(8)
+#
+GID_MIN			 1000
+GID_MAX			60000
+# System accounts
+SYS_GID_MIN		  101
+SYS_GID_MAX		  999
+# Extra per user group ids
+SUB_GID_MIN		   100000
+SUB_GID_MAX		600100000
+SUB_GID_COUNT		    65536
+
+#
+# Max number of login(1) retries if password is bad
+#
+LOGIN_RETRIES		5
+
+#
+# Max time in seconds for login(1)
+#
+LOGIN_TIMEOUT		60
+
+#
+# Maximum number of attempts to change password if rejected (too easy)
+#
+PASS_CHANGE_TRIES	5
+
+#
+# Warn about weak passwords (but still allow them) if you are root.
+#
+PASS_ALWAYS_WARN	yes
+
+#
+# Number of significant characters in the password for crypt().
+# Default is 8, don't change unless your crypt() is better.
+# Ignored if MD5_CRYPT_ENAB set to "yes".
+#
+#PASS_MAX_LEN		8
+
+#
+# Require password before chfn(1)/chsh(1) can make any changes.
+#
+CHFN_AUTH		yes
+
+#
+# Which fields may be changed by regular users using chfn(1) - use
+# any combination of letters "frwh" (full name, room number, work
+# phone, home phone).  If not defined, no changes are allowed.
+# For backward compatibility, "yes" = "rwh" and "no" = "frwh".
+#
+CHFN_RESTRICT		rwh
+
+#
+# Password prompt (%s will be replaced by user name).
+#
+# XXX - it doesn't work correctly yet, for now leave it commented out
+# to use the default which is just "Password: ".
+#LOGIN_STRING		"%s's Password: "
+
+#
+# Only works if compiled with MD5_CRYPT defined:
+# If set to "yes", new passwords will be encrypted using the MD5-based
+# algorithm compatible with the one used by recent releases of FreeBSD.
+# It supports passwords of unlimited length and longer salt strings.
+# Set to "no" if you need to copy encrypted passwords to other systems
+# which don't understand the new algorithm.  Default is "no".
+#
+# Note: If you use PAM, it is recommended to use a value consistent with
+# the PAM modules configuration.
+#
+# This variable is deprecated. You should use ENCRYPT_METHOD instead.
+#
+#MD5_CRYPT_ENAB	no
+
+#
+# Only works if compiled with ENCRYPTMETHOD_SELECT defined:
+# If set to MD5, MD5-based algorithm will be used for encrypting password
+# If set to SHA256, SHA256-based algorithm will be used for encrypting password
+# If set to SHA512, SHA512-based algorithm will be used for encrypting password
+# If set to BCRYPT, BCRYPT-based algorithm will be used for encrypting password
+# If set to YESCRYPT, YESCRYPT-based algorithm will be used for encrypting password
+# If set to DES, DES-based algorithm will be used for encrypting password (default)
+# MD5 and DES should not be used for new hashes, see crypt(5) for recommendations.
+# Overrides the MD5_CRYPT_ENAB option
+#
+# Note: If you use PAM, it is recommended to use a value consistent with
+# the PAM modules configuration.
+#
+#ENCRYPT_METHOD DES
+
+#
+# Only works if ENCRYPT_METHOD is set to SHA256 or SHA512.
+#
+# Define the number of SHA rounds.
+# With a lot of rounds, it is more difficult to brute-force the password.
+# However, more CPU resources will be needed to authenticate users if
+# this value is increased.
+#
+# If not specified, the libc will choose the default number of rounds (5000),
+# which is orders of magnitude too low for modern hardware.
+# The values must be within the 1000-999999999 range.
+# If only one of the MIN or MAX values is set, then this value will be used.
+# If MIN > MAX, the highest value will be used.
+#
+#SHA_CRYPT_MIN_ROUNDS 5000
+#SHA_CRYPT_MAX_ROUNDS 5000
+
+#
+# Only works if ENCRYPT_METHOD is set to BCRYPT.
+#
+# Define the number of BCRYPT rounds.
+# With a lot of rounds, it is more difficult to brute-force the password.
+# However, more CPU resources will be needed to authenticate users if
+# this value is increased.
+#
+# If not specified, 13 rounds will be attempted.
+# If only one of the MIN or MAX values is set, then this value will be used.
+# If MIN > MAX, the highest value will be used.
+#
+#BCRYPT_MIN_ROUNDS 13
+#BCRYPT_MAX_ROUNDS 13
+
+#
+# Only works if ENCRYPT_METHOD is set to YESCRYPT.
+#
+# Define the YESCRYPT cost factor.
+# With a higher cost factor, it is more difficult to brute-force the password.
+# However, more CPU time and more memory will be needed to authenticate users
+# if this value is increased.
+#
+# If not specified, a cost factor of 5 will be used.
+# The value must be within the 1-11 range.
+#
+#YESCRYPT_COST_FACTOR 5
+
+#
+# List of groups to add to the user's supplementary group set
+# when logging in from the console (as determined by the CONSOLE
+# setting).  Default is none.
+#
+# Use with caution - it is possible for users to gain permanent
+# access to these groups, even when not logged in from the console.
+# How to do it is left as an exercise for the reader...
+#
+#CONSOLE_GROUPS		floppy:audio:cdrom
+
+#
+# Should login be allowed if we can't cd to the home directory?
+# Default is no.
+#
+DEFAULT_HOME	yes
+
+#
+# The pwck(8) utility emits a warning for any system account with a home
+# directory that does not exist.  Some system accounts intentionally do
+# not have a home directory.  Such accounts may have this string as
+# their home directory in /etc/passwd to avoid a spurious warning.
+#
+NONEXISTENT	/nonexistent
+
+#
+# If this file exists and is readable, login environment will be
+# read from it.  Every line should be in the form name=value.
+#
+ENVIRON_FILE	/etc/environment
+
+#
+# If defined, this command is run when removing a user.
+# It should remove any at/cron/print jobs etc. owned by
+# the user to be removed (passed as the first argument).
+#
+#USERDEL_CMD	/usr/sbin/userdel_local
+
+#
+# Enable setting of the umask group bits to be the same as owner bits
+# (examples: 022 -> 002, 077 -> 007) for non-root users, if the uid is
+# the same as gid, and username is the same as the primary group name.
+#
+# This also enables userdel(8) to remove user groups if no members exist.
+#
+USERGROUPS_ENAB yes
+
+#
+# If set to a non-zero number, the shadow utilities will make sure that
+# groups never have more than this number of users on one line.
+# This permits to support split groups (groups split into multiple lines,
+# with the same group ID, to avoid limitation of the line length in the
+# group file).
+#
+# 0 is the default value and disables this feature.
+#
+#MAX_MEMBERS_PER_GROUP	0
+
+#
+# If useradd(8) should create home directories for users by default (non
+# system users only).
+# This option is overridden with the -M or -m flags on the useradd(8)
+# command-line.
+#
+#CREATE_HOME     yes
+
+#
+# Force use shadow, even if shadow passwd & shadow group files are
+# missing.
+#
+#FORCE_SHADOW    yes
+
+#
+# Allow newuidmap and newgidmap when running under an alternative
+# primary group.
+#
+#GRANT_AUX_GROUP_SUBIDS yes
+
+#
+# Prevents an empty password field to be interpreted as "no authentication
+# required".
+# Set to "yes" to prevent for all accounts
+# Set to "superuser" to prevent for UID 0 / root (default)
+# Set to "no" to not prevent for any account (dangerous, historical default)
+PREVENT_NO_AUTH superuser
+
+#
+# Select the HMAC cryptography algorithm.
+# Used in pam_timestamp module to calculate the keyed-hash message
+# authentication code.
+#
+# Note: It is recommended to check hmac(3) to see the possible algorithms
+# that are available in your system.
+#
+#HMAC_CRYPTO_ALGO SHA512

etc/pam.d/Makefile.am

@@ -0,0 +1,34 @@
+# This is a dummy Makefile.am to get automake work flawlessly,
+# and also cooperate to make a distribution for `make dist'
+
+pamd_files = \
+	chpasswd \
+	chfn \
+	chsh \
+	groupmems \
+	login \
+	newusers \
+	passwd
+
+pamd_acct_tools_files = \
+	chgpasswd \
+	groupadd \
+	groupdel \
+	groupmod \
+	useradd \
+	userdel \
+	usermod
+
+if USE_PAM
+pamddir = $(sysconfdir)/pam.d
+pamd_DATA = $(pamd_files)
+if ACCT_TOOLS_SETUID
+pamd_DATA += $(pamd_acct_tools_files)
+endif
+endif
+
+if WITH_SU
+pamd_files += su
+endif
+
+EXTRA_DIST = $(pamd_files) $(pamd_acct_tools_files)

etc/pam.d/Makefile.in

@@ -0,0 +1,576 @@
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+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
+    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
+am__installdirs = "$(DESTDIR)$(pamddir)"
+DATA = $(pamd_DATA)
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+LIBCRYPT = @LIBCRYPT@
+LIBECONF = @LIBECONF@
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+LIBINTL = @LIBINTL@
+LIBMD = @LIBMD@
+LIBOBJS = @LIBOBJS@
+LIBPAM = @LIBPAM@
+LIBS = @LIBS@
+LIBSELINUX = @LIBSELINUX@
+LIBSEMANAGE = @LIBSEMANAGE@
+LIBSKEY = @LIBSKEY@
+LIBSUBID_ABI = @LIBSUBID_ABI@
+LIBSUBID_ABI_MAJOR = @LIBSUBID_ABI_MAJOR@
+LIBSUBID_ABI_MICRO = @LIBSUBID_ABI_MICRO@
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+pamd_files = chpasswd chfn chsh groupmems login newusers passwd \
+	$(am__append_2)
+pamd_acct_tools_files = \
+	chgpasswd \
+	groupadd \
+	groupdel \
+	groupmod \
+	useradd \
+	userdel \
+	usermod
+
+@USE_PAM_TRUE@pamddir = $(sysconfdir)/pam.d
+@USE_PAM_TRUE@pamd_DATA = $(pamd_files) $(am__append_1)
+EXTRA_DIST = $(pamd_files) $(pamd_acct_tools_files)
+all: all-am
+
+.SUFFIXES:
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+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign etc/pam.d/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign etc/pam.d/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+install-pamdDATA: $(pamd_DATA)
+	@$(NORMAL_INSTALL)
+	@list='$(pamd_DATA)'; test -n "$(pamddir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pamddir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pamddir)" || exit 1; \
+	fi; \
+	for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  echo "$$d$$p"; \
+	done | $(am__base_list) | \
+	while read files; do \
+	  echo " $(INSTALL_DATA) $$files '$(DESTDIR)$(pamddir)'"; \
+	  $(INSTALL_DATA) $$files "$(DESTDIR)$(pamddir)" || exit $$?; \
+	done
+
+uninstall-pamdDATA:
+	@$(NORMAL_UNINSTALL)
+	@list='$(pamd_DATA)'; test -n "$(pamddir)" || list=; \
+	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
+	dir='$(DESTDIR)$(pamddir)'; $(am__uninstall_files_from_dir)
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$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)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pamddir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
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+	  $(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)
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+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
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+install-data-am: install-pamdDATA
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+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
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+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
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+pdf: pdf-am
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+pdf-am:
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+ps: ps-am
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+ps-am:
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+uninstall-am: uninstall-pamdDATA
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+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic clean-libtool \
+	cscopelist-am ctags-am distclean distclean-generic \
+	distclean-libtool 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-pamdDATA install-pdf install-pdf-am install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic mostlyclean-libtool pdf pdf-am \
+	ps ps-am tags-am uninstall uninstall-am uninstall-pamdDATA
+
+.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:

etc/pam.d/chfn

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/chgpasswd

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/chpasswd

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/chsh

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/groupadd

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/groupdel

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/groupmems

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/groupmod

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/login

@@ -0,0 +1,11 @@
+#%PAM-1.0
+auth		required	pam_securetty.so
+auth		include		system-auth
+account		required	pam_nologin.so
+account		include		system-auth
+password	include		system-auth
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
+session		include		system-auth
+session		required	pam_loginuid.so
+session		optional	pam_console.so
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open

etc/pam.d/newusers

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/passwd

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		include		system-auth
+account		include		system-auth
+password	include		system-auth

etc/pam.d/su

@@ -0,0 +1,13 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+# Uncomment the following line to implicitly trust users in the "wheel" group.
+#auth		sufficient	pam_wheel.so trust use_uid
+# Uncomment the following line to require a user to be in the "wheel" group.
+auth		required	pam_wheel.so use_uid
+auth		include		system-auth
+account		include		system-auth
+password	include		system-auth
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so close
+session		include		system-auth
+session [success=ok ignore=ignore module_unknown=ignore default=bad] pam_selinux.so open
+session		optional	pam_xauth.so

etc/pam.d/useradd

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/userdel

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/pam.d/usermod

@@ -0,0 +1,4 @@
+#%PAM-1.0
+auth		sufficient	pam_rootok.so
+account		required	pam_permit.so
+password	include		system-auth

etc/shadow-maint/Makefile.am

@@ -0,0 +1,5 @@
+shadowmaint_files = \
+	groupdel-pre.d/01-kill_group_procs.sh \
+	userdel-pre.d/01-kill_user_procs.sh
+
+EXTRA_DIST = $(shadowmaint_files)

etc/shadow-maint/Makefile.in

@@ -0,0 +1,508 @@
+# Makefile.in generated by automake 1.16.5 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2021 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
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+}
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+top_srcdir = @top_srcdir@
+shadowmaint_files = \
+	groupdel-pre.d/01-kill_group_procs.sh \
+	userdel-pre.d/01-kill_user_procs.sh
+
+EXTRA_DIST = $(shadowmaint_files)
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+
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+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign etc/shadow-maint/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign etc/shadow-maint/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+tags TAGS:
+
+ctags CTAGS:
+
+cscope cscopelist:
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
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+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$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
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+	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:
+
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+
+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)
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+# 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:

etc/shadow-maint/groupdel-pre.d/01-kill_group_procs.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+GROUPID=`awk -F: '$1 == "'"${SUBJECT}"'" { print $3 }' /etc/group`
+
+if [ "${GROUPID}" = "" ]; then
+    exit 0
+fi
+
+for status in /proc/*/status; do
+    # either this isn't a process or its already dead since expanding the list
+    [ -f "$status" ] || continue
+
+    tbuf=${status%/status}
+    pid=${tbuf#/proc/}
+    case "$pid" in
+        "$$") continue;;
+        [0-9]*) :;;
+        *) continue
+    esac
+    
+    grep -q '^Groups:.*\b'"${GROUPID}"'\b.*' "/proc/$pid/status" || continue
+
+    kill -9 "$pid" || echo "cannot kill $pid" 1>&2
+done
+

etc/shadow-maint/userdel-pre.d/01-kill_user_procs.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+
+# Check user exists, and if so, send sigkill to processes that the user owns
+
+ps -eo user >/dev/null 2>&1
+if [ $? -eq 0 ]; then
+    RUNNING=`ps -eo user | grep -Fx "$SUBJECT" | wc -l`
+    # if the user does not exist, RUNNING will be 0
+    if [ "${RUNNING}x" = "0x" ]; then
+        exit 0
+    fi
+fi
+
+# If there is no ps -eo, traverse the process directly.
+
+ls -1 /proc | while IFS= read -r PROC; do
+  echo "$PROC" | grep -E '^[0-9]+$' >/dev/null
+  if [ $? -ne 0 ]; then
+    continue
+  fi
+  if [ -d "/proc/${PROC}" ]; then
+    USR=`stat -c "%U" /proc/${PROC}`
+    if [ "${USR}" = "${SUBJECT}" ]; then
+      echo "Killing ${SUBJECT} owned ${PROC}"
+      kill -9 "${PROC}"
+    fi
+  fi
+done
+

install-sh

@@ -0,0 +1,541 @@
+#!/bin/sh
+# install - install a program, script, or datafile
+
+scriptversion=2020-11-14.01; # UTC
+
+# This originates from X11R5 (mit/util/scripts/install.sh), which was
+# later released in X11R6 (xc/config/util/install.sh) with the
+# following copyright and license.
+#
+# Copyright (C) 1994 X Consortium
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to
+# deal in the Software without restriction, including without limitation the
+# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+# sell copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
+# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+# Except as contained in this notice, the name of the X Consortium shall not
+# be used in advertising or otherwise to promote the sale, use or other deal-
+# ings in this Software without prior written authorization from the X Consor-
+# tium.
+#
+#
+# FSF changes to this file are in the public domain.
+#
+# Calling this script install-sh is preferred over install.sh, to prevent
+# 'make' implicit rules from creating a file called install from it
+# when there is no Makefile.
+#
+# This script is compatible with the BSD install script, but was written
+# from scratch.
+
+tab='	'
+nl='
+'
+IFS=" $tab$nl"
+
+# Set DOITPROG to "echo" to test this script.
+
+doit=${DOITPROG-}
+doit_exec=${doit:-exec}
+
+# Put in absolute file names if you don't have them in your path;
+# or use environment vars.
+
+chgrpprog=${CHGRPPROG-chgrp}
+chmodprog=${CHMODPROG-chmod}
+chownprog=${CHOWNPROG-chown}
+cmpprog=${CMPPROG-cmp}
+cpprog=${CPPROG-cp}
+mkdirprog=${MKDIRPROG-mkdir}
+mvprog=${MVPROG-mv}
+rmprog=${RMPROG-rm}
+stripprog=${STRIPPROG-strip}
+
+posix_mkdir=
+
+# Desired mode of installed file.
+mode=0755
+
+# Create dirs (including intermediate dirs) using mode 755.
+# This is like GNU 'install' as of coreutils 8.32 (2020).
+mkdir_umask=22
+
+backupsuffix=
+chgrpcmd=
+chmodcmd=$chmodprog
+chowncmd=
+mvcmd=$mvprog
+rmcmd="$rmprog -f"
+stripcmd=
+
+src=
+dst=
+dir_arg=
+dst_arg=
+
+copy_on_change=false
+is_target_a_directory=possibly
+
+usage="\
+Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
+   or: $0 [OPTION]... SRCFILES... DIRECTORY
+   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
+   or: $0 [OPTION]... -d DIRECTORIES...
+
+In the 1st form, copy SRCFILE to DSTFILE.
+In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
+In the 4th, create DIRECTORIES.
+
+Options:
+     --help     display this help and exit.
+     --version  display version info and exit.
+
+  -c            (ignored)
+  -C            install only if different (preserve data modification time)
+  -d            create directories instead of installing files.
+  -g GROUP      $chgrpprog installed files to GROUP.
+  -m MODE       $chmodprog installed files to MODE.
+  -o USER       $chownprog installed files to USER.
+  -p            pass -p to $cpprog.
+  -s            $stripprog installed files.
+  -S SUFFIX     attempt to back up existing files, with suffix SUFFIX.
+  -t DIRECTORY  install into DIRECTORY.
+  -T            report an error if DSTFILE is a directory.
+
+Environment variables override the default commands:
+  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
+  RMPROG STRIPPROG
+
+By default, rm is invoked with -f; when overridden with RMPROG,
+it's up to you to specify -f if you want it.
+
+If -S is not specified, no backups are attempted.
+
+Email bug reports to bug-automake@gnu.org.
+Automake home page: https://www.gnu.org/software/automake/
+"
+
+while test $# -ne 0; do
+  case $1 in
+    -c) ;;
+
+    -C) copy_on_change=true;;
+
+    -d) dir_arg=true;;
+
+    -g) chgrpcmd="$chgrpprog $2"
+        shift;;
+
+    --help) echo "$usage"; exit $?;;
+
+    -m) mode=$2
+        case $mode in
+          *' '* | *"$tab"* | *"$nl"* | *'*'* | *'?'* | *'['*)
+            echo "$0: invalid mode: $mode" >&2
+            exit 1;;
+        esac
+        shift;;
+
+    -o) chowncmd="$chownprog $2"
+        shift;;
+
+    -p) cpprog="$cpprog -p";;
+
+    -s) stripcmd=$stripprog;;
+
+    -S) backupsuffix="$2"
+        shift;;
+
+    -t)
+        is_target_a_directory=always
+        dst_arg=$2
+        # Protect names problematic for 'test' and other utilities.
+        case $dst_arg in
+          -* | [=\(\)!]) dst_arg=./$dst_arg;;
+        esac
+        shift;;
+
+    -T) is_target_a_directory=never;;
+
+    --version) echo "$0 $scriptversion"; exit $?;;
+
+    --) shift
+        break;;
+
+    -*) echo "$0: invalid option: $1" >&2
+        exit 1;;
+
+    *)  break;;
+  esac
+  shift
+done
+
+# We allow the use of options -d and -T together, by making -d
+# take the precedence; this is for compatibility with GNU install.
+
+if test -n "$dir_arg"; then
+  if test -n "$dst_arg"; then
+    echo "$0: target directory not allowed when installing a directory." >&2
+    exit 1
+  fi
+fi
+
+if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
+  # When -d is used, all remaining arguments are directories to create.
+  # When -t is used, the destination is already specified.
+  # Otherwise, the last argument is the destination.  Remove it from $@.
+  for arg
+  do
+    if test -n "$dst_arg"; then
+      # $@ is not empty: it contains at least $arg.
+      set fnord "$@" "$dst_arg"
+      shift # fnord
+    fi
+    shift # arg
+    dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
+  done
+fi
+
+if test $# -eq 0; then
+  if test -z "$dir_arg"; then
+    echo "$0: no input file specified." >&2
+    exit 1
+  fi
+  # It's OK to call 'install-sh -d' without argument.
+  # This can happen when creating conditional directories.
+  exit 0
+fi
+
+if test -z "$dir_arg"; then
+  if test $# -gt 1 || test "$is_target_a_directory" = always; then
+    if test ! -d "$dst_arg"; then
+      echo "$0: $dst_arg: Is not a directory." >&2
+      exit 1
+    fi
+  fi
+fi
+
+if test -z "$dir_arg"; then
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
+
+  # Set umask so as not to create temps with too-generous modes.
+  # However, 'strip' requires both read and write access to temps.
+  case $mode in
+    # Optimize common cases.
+    *644) cp_umask=133;;
+    *755) cp_umask=22;;
+
+    *[0-7])
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw='% 200'
+      fi
+      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
+    *)
+      if test -z "$stripcmd"; then
+        u_plus_rw=
+      else
+        u_plus_rw=,u+rw
+      fi
+      cp_umask=$mode$u_plus_rw;;
+  esac
+fi
+
+for src
+do
+  # Protect names problematic for 'test' and other utilities.
+  case $src in
+    -* | [=\(\)!]) src=./$src;;
+  esac
+
+  if test -n "$dir_arg"; then
+    dst=$src
+    dstdir=$dst
+    test -d "$dstdir"
+    dstdir_status=$?
+    # Don't chown directories that already exist.
+    if test $dstdir_status = 0; then
+      chowncmd=""
+    fi
+  else
+
+    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
+    # might cause directories to be created, which would be especially bad
+    # if $src (and thus $dsttmp) contains '*'.
+    if test ! -f "$src" && test ! -d "$src"; then
+      echo "$0: $src does not exist." >&2
+      exit 1
+    fi
+
+    if test -z "$dst_arg"; then
+      echo "$0: no destination specified." >&2
+      exit 1
+    fi
+    dst=$dst_arg
+
+    # If destination is a directory, append the input filename.
+    if test -d "$dst"; then
+      if test "$is_target_a_directory" = never; then
+        echo "$0: $dst_arg: Is a directory" >&2
+        exit 1
+      fi
+      dstdir=$dst
+      dstbase=`basename "$src"`
+      case $dst in
+	*/) dst=$dst$dstbase;;
+	*)  dst=$dst/$dstbase;;
+      esac
+      dstdir_status=0
+    else
+      dstdir=`dirname "$dst"`
+      test -d "$dstdir"
+      dstdir_status=$?
+    fi
+  fi
+
+  case $dstdir in
+    */) dstdirslash=$dstdir;;
+    *)  dstdirslash=$dstdir/;;
+  esac
+
+  obsolete_mkdir_used=false
+
+  if test $dstdir_status != 0; then
+    case $posix_mkdir in
+      '')
+        # With -d, create the new directory with the user-specified mode.
+        # Otherwise, rely on $mkdir_umask.
+        if test -n "$dir_arg"; then
+          mkdir_mode=-m$mode
+        else
+          mkdir_mode=
+        fi
+
+        posix_mkdir=false
+	# The $RANDOM variable is not portable (e.g., dash).  Use it
+	# here however when possible just to lower collision chance.
+	tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
+
+	trap '
+	  ret=$?
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir" 2>/dev/null
+	  exit $ret
+	' 0
+
+	# Because "mkdir -p" follows existing symlinks and we likely work
+	# directly in world-writeable /tmp, make sure that the '$tmpdir'
+	# directory is successfully created first before we actually test
+	# 'mkdir -p'.
+	if (umask $mkdir_umask &&
+	    $mkdirprog $mkdir_mode "$tmpdir" &&
+	    exec $mkdirprog $mkdir_mode -p -- "$tmpdir/a/b") >/dev/null 2>&1
+	then
+	  if test -z "$dir_arg" || {
+	       # Check for POSIX incompatibilities with -m.
+	       # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
+	       # other-writable bit of parent directory when it shouldn't.
+	       # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
+	       test_tmpdir="$tmpdir/a"
+	       ls_ld_tmpdir=`ls -ld "$test_tmpdir"`
+	       case $ls_ld_tmpdir in
+		 d????-?r-*) different_mode=700;;
+		 d????-?--*) different_mode=755;;
+		 *) false;;
+	       esac &&
+	       $mkdirprog -m$different_mode -p -- "$test_tmpdir" && {
+		 ls_ld_tmpdir_1=`ls -ld "$test_tmpdir"`
+		 test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
+	       }
+	     }
+	  then posix_mkdir=:
+	  fi
+	  rmdir "$tmpdir/a/b" "$tmpdir/a" "$tmpdir"
+	else
+	  # Remove any dirs left behind by ancient mkdir implementations.
+	  rmdir ./$mkdir_mode ./-p ./-- "$tmpdir" 2>/dev/null
+	fi
+	trap '' 0;;
+    esac
+
+    if
+      $posix_mkdir && (
+        umask $mkdir_umask &&
+        $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
+      )
+    then :
+    else
+
+      # mkdir does not conform to POSIX,
+      # or it failed possibly due to a race condition.  Create the
+      # directory the slow way, step by step, checking for races as we go.
+
+      case $dstdir in
+        /*) prefix='/';;
+        [-=\(\)!]*) prefix='./';;
+        *)  prefix='';;
+      esac
+
+      oIFS=$IFS
+      IFS=/
+      set -f
+      set fnord $dstdir
+      shift
+      set +f
+      IFS=$oIFS
+
+      prefixes=
+
+      for d
+      do
+        test X"$d" = X && continue
+
+        prefix=$prefix$d
+        if test -d "$prefix"; then
+          prefixes=
+        else
+          if $posix_mkdir; then
+            (umask $mkdir_umask &&
+             $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
+            # Don't fail if two instances are running concurrently.
+            test -d "$prefix" || exit 1
+          else
+            case $prefix in
+              *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
+              *) qprefix=$prefix;;
+            esac
+            prefixes="$prefixes '$qprefix'"
+          fi
+        fi
+        prefix=$prefix/
+      done
+
+      if test -n "$prefixes"; then
+        # Don't fail if two instances are running concurrently.
+        (umask $mkdir_umask &&
+         eval "\$doit_exec \$mkdirprog $prefixes") ||
+          test -d "$dstdir" || exit 1
+        obsolete_mkdir_used=true
+      fi
+    fi
+  fi
+
+  if test -n "$dir_arg"; then
+    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
+    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
+      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
+  else
+
+    # Make a couple of temp file names in the proper directory.
+    dsttmp=${dstdirslash}_inst.$$_
+    rmtmp=${dstdirslash}_rm.$$_
+
+    # Trap to clean up those temp files at exit.
+    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
+
+    # Copy the file name to the temp name.
+    (umask $cp_umask &&
+     { test -z "$stripcmd" || {
+	 # Create $dsttmp read-write so that cp doesn't create it read-only,
+	 # which would cause strip to fail.
+	 if test -z "$doit"; then
+	   : >"$dsttmp" # No need to fork-exec 'touch'.
+	 else
+	   $doit touch "$dsttmp"
+	 fi
+       }
+     } &&
+     $doit_exec $cpprog "$src" "$dsttmp") &&
+
+    # and set any options; do chmod last to preserve setuid bits.
+    #
+    # If any of these fail, we abort the whole thing.  If we want to
+    # ignore errors from any of these, just make sure not to ignore
+    # errors from the above "$doit $cpprog $src $dsttmp" command.
+    #
+    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
+    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
+    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
+    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
+
+    # If -C, don't bother to copy if it wouldn't change the file.
+    if $copy_on_change &&
+       old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
+       new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
+       set -f &&
+       set X $old && old=:$2:$4:$5:$6 &&
+       set X $new && new=:$2:$4:$5:$6 &&
+       set +f &&
+       test "$old" = "$new" &&
+       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
+    then
+      rm -f "$dsttmp"
+    else
+      # If $backupsuffix is set, and the file being installed
+      # already exists, attempt a backup.  Don't worry if it fails,
+      # e.g., if mv doesn't support -f.
+      if test -n "$backupsuffix" && test -f "$dst"; then
+        $doit $mvcmd -f "$dst" "$dst$backupsuffix" 2>/dev/null
+      fi
+
+      # Rename the file to the real destination.
+      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
+
+      # The rename failed, perhaps because mv can't rename something else
+      # to itself, or perhaps because mv is so ancient that it does not
+      # support -f.
+      {
+        # Now remove or move aside any old file at destination location.
+        # We try this two ways since rm can't unlink itself on some
+        # systems and the destination file might be busy for other
+        # reasons.  In this case, the final cleanup might fail but the new
+        # file should still install successfully.
+        {
+          test ! -f "$dst" ||
+          $doit $rmcmd "$dst" 2>/dev/null ||
+          { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
+            { $doit $rmcmd "$rmtmp" 2>/dev/null; :; }
+          } ||
+          { echo "$0: cannot unlink or rename $dst" >&2
+            (exit 1); exit 1
+          }
+        } &&
+
+        # Now rename the file to the real destination.
+        $doit $mvcmd "$dsttmp" "$dst"
+      }
+    fi || exit 1
+
+    trap '' 0
+  fi
+done
+
+# Local variables:
+# eval: (add-hook 'before-save-hook 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC0"
+# time-stamp-end: "; # UTC"
+# End:

lib/.indent.pro

@@ -0,0 +1,5 @@
+-kr
+-i8
+-bad
+-pcs
+-l80

lib/Makefile.am

@@ -0,0 +1,293 @@
+
+AUTOMAKE_OPTIONS = 1.0 foreign
+
+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/calloc.c \
+	alloc/calloc.h \
+	alloc/malloc.c \
+	alloc/malloc.h \
+	alloc/realloc.c \
+	alloc/realloc.h \
+	alloc/reallocf.c \
+	alloc/reallocf.h \
+	alloc/x/xcalloc.c \
+	alloc/x/xcalloc.h \
+	alloc/x/xmalloc.c \
+	alloc/x/xmalloc.h \
+	alloc/x/xrealloc.c \
+	alloc/x/xrealloc.h \
+	atoi/a2i/a2i.c \
+	atoi/a2i/a2i.h \
+	atoi/a2i/a2s.c \
+	atoi/a2i/a2s.h \
+	atoi/a2i/a2s_c.c \
+	atoi/a2i/a2s_c.h \
+	atoi/a2i/a2s_nc.c \
+	atoi/a2i/a2s_nc.h \
+	atoi/a2i/a2u.c \
+	atoi/a2i/a2u.h \
+	atoi/a2i/a2u_c.c \
+	atoi/a2i/a2u_c.h \
+	atoi/a2i/a2u_nc.c \
+	atoi/a2i/a2u_nc.h \
+	atoi/getnum.c \
+	atoi/getnum.h \
+	atoi/str2i/str2i.c \
+	atoi/str2i/str2i.h \
+	atoi/str2i/str2s.c \
+	atoi/str2i/str2s.h \
+	atoi/str2i/str2u.c \
+	atoi/str2i/str2u.h \
+	atoi/strtoi/strtoi.c \
+	atoi/strtoi/strtoi.h \
+	atoi/strtoi/strtou.c \
+	atoi/strtoi/strtou.h \
+	atoi/strtoi/strtou_noneg.c \
+	atoi/strtoi/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 \
+	fs/readlink/areadlink.c \
+	fs/readlink/areadlink.h \
+	fs/readlink/readlinknul.c \
+	fs/readlink/readlinknul.h \
+	get_pid.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 \
+	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 \
+	root_flag.c \
+	run_part.h \
+	run_part.c \
+	salt.c \
+	search/cmp/cmp.c \
+	search/cmp/cmp.h \
+	search/l/lfind.c \
+	search/l/lfind.h \
+	search/l/lsearch.c \
+	search/l/lsearch.h \
+	search/sort/qsort.c \
+	search/sort/qsort.h \
+	selinux.c \
+	semanage.c \
+	setugid.c \
+	setupenv.c \
+	sgetgrent.c \
+	sgetpwent.c \
+	sgetspent.c \
+	sgroupio.c \
+	sgroupio.h\
+	shadow.c \
+	shadow/grp/agetgroups.c \
+	shadow/grp/agetgroups.h \
+	shadowio.c \
+	shadowio.h \
+	shadowlog.c \
+	shadowlog.h \
+	shadowlog_internal.h \
+	shadowmem.c \
+	shell.c \
+	sizeof.h \
+	spawn.c \
+	sssd.c \
+	sssd.h \
+	string/ctype/strisascii/strisdigit.c \
+	string/ctype/strisascii/strisdigit.h \
+	string/memset/memzero.c \
+	string/memset/memzero.h \
+	string/sprintf/snprintf.c \
+	string/sprintf/snprintf.h \
+	string/sprintf/stpeprintf.c \
+	string/sprintf/stpeprintf.h \
+	string/sprintf/xasprintf.c \
+	string/sprintf/xasprintf.h \
+	string/strchr/strchrcnt.c \
+	string/strchr/strchrcnt.h \
+	string/strchr/strchrscnt.c \
+	string/strchr/strchrscnt.h \
+	string/strchr/strnul.c \
+	string/strchr/strnul.h \
+	string/strcmp/strcaseeq.c \
+	string/strcmp/strcaseeq.h \
+	string/strcmp/streq.c \
+	string/strcmp/streq.h \
+	string/strcpy/stpecpy.c \
+	string/strcpy/stpecpy.h \
+	string/strcpy/strncat.c \
+	string/strcpy/strncat.h \
+	string/strcpy/strncpy.c \
+	string/strcpy/strncpy.h \
+	string/strcpy/strtcpy.c \
+	string/strcpy/strtcpy.h \
+	string/strdup/strndupa.c \
+	string/strdup/strndupa.h \
+	string/strdup/xstrdup.c \
+	string/strdup/xstrdup.h \
+	string/strdup/xstrndup.c \
+	string/strdup/xstrndup.h \
+	string/strftime.c \
+	string/strftime.h \
+	string/strspn/stpspn.c \
+	string/strspn/stpspn.h \
+	string/strspn/stprcspn.c \
+	string/strspn/stprcspn.h \
+	string/strspn/stprspn.c \
+	string/strspn/stprspn.h \
+	string/strspn/strrcspn.c \
+	string/strspn/strrcspn.h \
+	string/strspn/strrspn.c \
+	string/strspn/strrspn.h \
+	string/strtok/stpsep.c \
+	string/strtok/stpsep.h \
+	strtoday.c \
+	sub.c \
+	subordinateio.h \
+	subordinateio.c \
+	sulog.c \
+	time/day_to_str.c \
+	time/day_to_str.h \
+	ttytype.c \
+	typetraits.h \
+	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:
+#
+# sources for dbm support (not yet used)
+
+EXTRA_DIST = \
+	.indent.pro \
+	gshadow_.h \
+	xgetXXbyYY.c

lib/addgrps.c

@@ -0,0 +1,81 @@
+// SPDX-FileCopyrightText: 1989-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2001-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2007-2009, Nicolas François
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#if !defined(USE_PAM)
+
+#include "prototypes.h"
+#include "defines.h"
+
+#include <errno.h>
+#include <grp.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+
+#include "alloc/reallocf.h"
+#include "search/l/lsearch.h"
+#include "shadow/grp/agetgroups.h"
+#include "shadowlog.h"
+#include "string/strchr/strchrscnt.h"
+
+
+/*
+ * Add groups with names from LIST (separated by commas or colons)
+ * to the supplementary group set.  Silently ignore groups which are
+ * already there.
+ */
+int
+add_groups(const char *list)
+{
+	char    *g, *p, *dup;
+	FILE *shadow_logfd = log_get_logfd();
+	gid_t   *gids;
+	size_t  n;
+
+	gids = agetgroups(&n);
+	if (gids == NULL)
+		return -1;
+
+	gids = REALLOCF(gids, n + strchrscnt(list, ",:") + 1, gid_t);
+	if (gids == NULL)
+		return -1;
+
+	p = dup = strdup(list);
+	if (dup == NULL)
+		goto free_gids;
+
+	while (NULL != (g = strsep(&p, ",:"))) {
+		struct group  *grp;
+
+		grp = getgrnam(g); /* local, no need for xgetgrnam */
+		if (NULL == grp) {
+			fprintf(shadow_logfd, _("Warning: unknown group %s\n"), g);
+			continue;
+		}
+
+		LSEARCH(&grp->gr_gid, gids, &n);
+	}
+	free(dup);
+
+	if (setgroups(n, gids) == -1) {
+		fprintf(shadow_logfd, "setgroups: %s\n", strerror(errno));
+		goto free_gids;
+	}
+
+	free(gids);
+	return 0;
+
+free_gids:
+	free(gids);
+	return -1;
+}
+#else				/* !USE_PAM */
+extern int ISO_C_forbids_an_empty_translation_unit;
+#endif				/* !USE_PAM */

lib/adds.c

@@ -0,0 +1,13 @@
+// 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]);

lib/adds.h

@@ -0,0 +1,70 @@
+// SPDX-FileCopyrightText: 2023-2024, 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 "search/sort/qsort.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 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);
+
+		errno = 0;
+		addend[0] = addsl2(addend[0], addend[--n]);
+		if (errno == EOVERFLOW)
+			return addend[0];
+	}
+	errno = e;
+	return addend[0];
+}
+
+
+#endif  // include guard

lib/age.c

@@ -0,0 +1,181 @@
+/*
+ * SPDX-FileCopyrightText: 1989 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 1998, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001 - 2006, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2008 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <time.h>
+#include <errno.h>
+#include <pwd.h>
+#include <grp.h>
+
+#include "adds.h"
+#include "defines.h"
+#include "exitcodes.h"
+#include "prototypes.h"
+
+
+#ident "$Id$"
+
+#ifndef PASSWD_PROGRAM
+#define PASSWD_PROGRAM "/bin/passwd"
+#endif
+/*
+ * expire - force password change if password expired
+ *
+ *	expire() calls /bin/passwd to change the user's password
+ *	if it has expired.
+ */
+int expire (const struct passwd *pw, /*@null@*/const struct spwd *sp)
+{
+	int status;
+	pid_t child;
+	pid_t pid;
+
+	if (NULL == sp) {
+		return 0;
+	}
+
+	/*
+	 * See if the user's password has expired, and if so
+	 * force them to change their password.
+	 */
+
+	status = isexpired (pw, sp);
+	switch (status) {
+	case 0:
+		return 0;
+	case 1:
+		(void) fputs (_("Your password has expired."), stdout);
+		break;
+	case 2:
+		(void) fputs (_("Your password is inactive."), stdout);
+		break;
+	case 3:
+		(void) fputs (_("Your login has expired."), stdout);
+		break;
+	}
+
+	/*
+	 * Setting the maximum valid period to less than the minimum
+	 * valid period means that the minimum period will never
+	 * occur while the password is valid, so the user can never
+	 * change that password.
+	 */
+
+	if ((status > 1) || (sp->sp_max < sp->sp_min)) {
+		(void) puts (_("  Contact the system administrator."));
+		exit (EXIT_FAILURE);
+	}
+	(void) puts (_("  Choose a new password."));
+	(void) fflush (stdout);
+
+	/*
+	 * Close all the files so that unauthorized access won't
+	 * occur.  This needs to be done anyway because those files
+	 * might become stale after "passwd" is executed.
+	 */
+
+	endspent ();
+	endpwent ();
+#ifdef SHADOWGRP
+	endsgent ();
+#endif
+	endgrent ();
+
+	/*
+	 * Execute the /bin/passwd command.  The exit status will be
+	 * examined to see what the result is.  If there are any
+	 * errors the routine will exit.  This forces the user to
+	 * change their password before being able to use the account.
+	 */
+
+	pid = fork ();
+	if (0 == pid) {
+		int err;
+
+		/*
+		 * Set the UID to be that of the user.  This causes
+		 * passwd to work just like it would had they executed
+		 * it from the command line while logged in.
+		 */
+#if !defined(USE_PAM)
+		if (setup_uid_gid (pw, false) != 0)
+#else
+		if (setup_uid_gid (pw) != 0)
+#endif
+		{
+			_exit (126);
+		}
+
+		(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);
+	} else if ((pid_t) -1 == pid) {
+		perror ("fork");
+		exit (EXIT_FAILURE);
+	}
+
+	while (((child = wait (&status)) != pid) && (child != (pid_t)-1));
+
+	if ((child == pid) && (0 == status)) {
+		return 1;
+	}
+
+	exit (EXIT_FAILURE);
+ /*@notreached@*/}
+
+/*
+ * agecheck - see if warning is needed for password expiration
+ *
+ *	agecheck sees how many days until the user's password is going
+ *	to expire and warns the user of the pending password expiration.
+ */
+
+void agecheck (/*@null@*/const struct spwd *sp)
+{
+	long now = time(NULL) / DAY;
+	long remain;
+
+	if (NULL == sp) {
+		return;
+	}
+
+	/*
+	 * The last, max, and warn fields must be supported or the
+	 * warning period cannot be calculated.
+	 */
+
+	if (   (-1 == sp->sp_lstchg)
+	    || (-1 == sp->sp_max)
+	    || (-1 == sp->sp_warn)) {
+		return;
+	}
+
+	if (0 == sp->sp_lstchg) {
+		(void) puts (_("You must change your password."));
+		return;
+	}
+
+	remain = addsl(sp->sp_lstchg, sp->sp_max, -now);
+
+	if (remain <= sp->sp_warn) {
+		if (remain > 1) {
+			(void) printf (_("Your password will expire in %ld days.\n"),
+			               remain);
+		} else if (1 == remain) {
+			(void) puts (_("Your password will expire tomorrow."));
+		} else if (remain == 0) {
+			(void) puts (_("Your password will expire today."));
+		}
+	}
+}
+

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/malloc.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);
+}

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

lib/alloc/calloc.c

@@ -0,0 +1,11 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/calloc.h"

lib/alloc/calloc.h

@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ALLOC_CALLOC_H_
+#define SHADOW_INCLUDE_LIB_ALLOC_CALLOC_H_
+
+
+#include <config.h>
+
+#include <stdlib.h>
+
+
+#define CALLOC(n, type)                                                       \
+(                                                                             \
+	(type *) calloc(n, sizeof(type))                                      \
+)
+
+
+#endif  // include guard

lib/alloc/malloc.c

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/malloc.h"
+
+#include <stddef.h>
+
+
+extern inline void *mallocarray(size_t nmemb, size_t size);

lib/alloc/malloc.h

@@ -0,0 +1,34 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ALLOC_MALLOC_H_
+#define SHADOW_INCLUDE_LIB_ALLOC_MALLOC_H_
+
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "attr.h"
+
+
+#define MALLOC(n, type)                                                       \
+(                                                                             \
+	(type *) mallocarray(n, sizeof(type))                                 \
+)
+
+
+ATTR_ALLOC_SIZE(1, 2)
+ATTR_MALLOC(free)
+inline void *mallocarray(size_t nmemb, size_t size);
+
+
+inline void *
+mallocarray(size_t nmemb, size_t size)
+{
+	return reallocarray(NULL, nmemb, size);
+}
+
+
+#endif  // include guard

lib/alloc/realloc.c

@@ -0,0 +1,11 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/realloc.h"

lib/alloc/realloc.h

@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ALLOC_REALLOC_H_
+#define SHADOW_INCLUDE_LIB_ALLOC_REALLOC_H_
+
+
+#include <config.h>
+
+#include <stdlib.h>
+
+
+#define REALLOC(p, n, type)                                                   \
+(                                                                             \
+	_Generic(p, type *: (type *) reallocarray(p, (n) ?: 1, sizeof(type))) \
+)
+
+
+#endif  // include guard

lib/alloc/reallocf.c

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/reallocf.h"
+
+#include <stddef.h>
+
+
+extern inline void *reallocarrayf(void *p, size_t nmemb, size_t size);

lib/alloc/reallocf.h

@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ALLOC_REALLOCF_H_
+#define SHADOW_INCLUDE_LIB_ALLOC_REALLOCF_H_
+
+
+#include <config.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "attr.h"
+
+
+#define REALLOCF(p, n, type)                                                  \
+(                                                                             \
+	_Generic(p, type *: (type *) reallocarrayf(p, (n) ?: 1, sizeof(type)))\
+)
+
+
+ATTR_ALLOC_SIZE(2, 3)
+ATTR_MALLOC(free)
+inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
+
+
+inline void *
+reallocarrayf(void *p, size_t nmemb, size_t size)
+{
+	void  *q;
+
+	q = reallocarray(p, nmemb ?: 1, size ?: 1);
+
+	if (q == NULL)
+		free(p);
+	return q;
+}
+
+
+#endif  // include guard

lib/alloc/x/xcalloc.c

@@ -0,0 +1,36 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/x/xcalloc.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "defines.h"
+#include "shadowlog.h"
+
+
+void *
+xcalloc(size_t nmemb, size_t size)
+{
+	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);
+}

lib/alloc/x/xcalloc.h

@@ -0,0 +1,28 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ALLOC_X_XCALLOC_H_
+#define SHADOW_INCLUDE_LIB_ALLOC_X_XCALLOC_H_
+
+
+#include <config.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "attr.h"
+
+
+#define XCALLOC(n, type)                                                      \
+(                                                                             \
+	(type *) xcalloc(n, sizeof(type))                                     \
+)
+
+
+ATTR_ALLOC_SIZE(1, 2)
+ATTR_MALLOC(free)
+void *xcalloc(size_t nmemb, size_t size);
+
+
+#endif  // include guard

lib/alloc/x/xmalloc.c

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/x/xmalloc.h"
+
+#include <stddef.h>
+
+
+extern inline void *xmallocarray(size_t nmemb, size_t size);

lib/alloc/x/xmalloc.h

@@ -0,0 +1,35 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ALLOC_X_XMALLOC_H_
+#define SHADOW_INCLUDE_LIB_ALLOC_X_XMALLOC_H_
+
+
+#include <config.h>
+
+#include <stddef.h>
+
+#include "alloc/x/xrealloc.h"
+#include "attr.h"
+
+
+#define XMALLOC(n, type)                                                      \
+(                                                                             \
+	(type *) xmallocarray(n, sizeof(type))                                \
+)
+
+
+ATTR_ALLOC_SIZE(1, 2)
+ATTR_MALLOC(free)
+inline void *xmallocarray(size_t nmemb, size_t size);
+
+
+inline void *
+xmallocarray(size_t nmemb, size_t size)
+{
+	return xreallocarray(NULL, nmemb, size);
+}
+
+
+#endif  // include guard

lib/alloc/x/xrealloc.c

@@ -0,0 +1,35 @@
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1998, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2006, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2008     , Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "alloc/x/xrealloc.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "alloc/reallocf.h"
+#include "defines.h"
+#include "shadowlog.h"
+
+
+void *
+xreallocarray(void *p, size_t nmemb, size_t size)
+{
+	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);
+}

lib/alloc/x/xrealloc.h

@@ -0,0 +1,31 @@
+// 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"
+
+
+#define XREALLOC(ptr, n, type)                                                \
+(                                                                             \
+	_Generic(ptr, type *:  (type *) xreallocarray(ptr, n, sizeof(type)))  \
+)
+
+
+ATTR_ALLOC_SIZE(2, 3)
+ATTR_MALLOC(free)
+void *xreallocarray(void *p, size_t nmemb, size_t size);
+
+
+#endif  // include guard

lib/atoi/a2i/a2i.c

@@ -0,0 +1,7 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2i.h"

lib/atoi/a2i/a2i.h

@@ -0,0 +1,62 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2I_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2I_H_
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2s_c.h"
+#include "atoi/a2i/a2s_nc.h"
+#include "atoi/a2i/a2u_c.h"
+#include "atoi/a2i/a2u_nc.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__)                                                  \
+)
+
+
+#endif  // include guard

lib/atoi/a2i/a2s.c

@@ -0,0 +1,7 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2s.h"

lib/atoi/a2i/a2s.h

@@ -0,0 +1,56 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2S_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2S_H_
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2s_c.h"
+#include "atoi/a2i/a2s_nc.h"
+
+
+#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__)                                                  \
+)
+
+
+#endif  // include guard

lib/atoi/a2i/a2s_c.c

@@ -0,0 +1,17 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2s_c.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);

lib/atoi/a2i/a2s_c.h

@@ -0,0 +1,64 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2S_C_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2S_C_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+#include <inttypes.h>
+
+#include "atoi/a2i/a2s_nc.h"
+#include "attr.h"
+
+
+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);
+
+
+inline int
+a2sh_c(short *restrict n, const char *s,
+    const char **restrict endp, int base, short min, short max)
+{
+	return a2sh_nc(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_nc(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_nc(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_nc(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+#endif  // include guard

lib/atoi/a2i/a2s_nc.c

@@ -0,0 +1,17 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2s_nc.h"
+
+
+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);

lib/atoi/a2i/a2s_nc.h

@@ -0,0 +1,91 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2S_NC_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2S_NC_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+
+#include "atoi/strtoi/strtoi.h"
+#include "attr.h"
+
+
+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);
+
+
+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;
+}
+
+
+#endif  // include guard

lib/atoi/a2i/a2u.c

@@ -0,0 +1,7 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2u.h"

lib/atoi/a2i/a2u.h

@@ -0,0 +1,56 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2U_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2U_H_
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2u_c.h"
+#include "atoi/a2i/a2u_nc.h"
+
+
+#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__)                                                  \
+)
+
+
+#endif  // include guard

lib/atoi/a2i/a2u_c.c

@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2u_c.h"
+
+
+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);

lib/atoi/a2i/a2u_c.h

@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2U_C_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2U_C_H_
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2u_nc.h"
+#include "attr.h"
+
+
+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);
+
+
+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_nc(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_nc(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_nc(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_nc(n, (char *) s, (char **) endp, base, min, max);
+}
+
+
+#endif  // include guard

lib/atoi/a2i/a2u_nc.c

@@ -0,0 +1,18 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include "atoi/a2i/a2u_nc.h"
+
+
+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);

lib/atoi/a2i/a2u_nc.h

@@ -0,0 +1,94 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_A2I_A2U_NC_H_
+#define SHADOW_INCLUDE_LIB_ATOI_A2I_A2U_NC_H_
+
+
+#include <config.h>
+
+#include <errno.h>
+
+#include "atoi/strtoi/strtou_noneg.h"
+#include "attr.h"
+
+
+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
+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

lib/atoi/getnum.c

@@ -0,0 +1,16 @@
+// SPDX-FileCopyrightText: 2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#include "atoi/getnum.h"
+
+
+extern inline int get_fd(const char *restrict fdstr, int *restrict fd);
+extern inline int get_gid(const char *restrict gidstr, gid_t *restrict gid);
+extern inline int get_pid(const char *restrict pidstr, pid_t *restrict pid);
+extern inline int get_uid(const char *restrict uidstr, uid_t *restrict uid);

lib/atoi/getnum.h

@@ -0,0 +1,60 @@
+// SPDX-FileCopyrightText: 2009, Nicolas François
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_ATOI_GETNUM_H_
+#define SHADOW_INCLUDE_LIB_ATOI_GETNUM_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+#include "atoi/a2i/a2i.h"
+#include "atoi/a2i/a2s.h"
+#include "attr.h"
+#include "typetraits.h"
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
+inline int get_fd(const char *restrict fdstr, int *restrict fd);
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
+inline int get_gid(const char *restrict gidstr, gid_t *restrict gid);
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
+inline int get_pid(const char *restrict pidstr, pid_t *restrict pid);
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
+inline int get_uid(const char *restrict uidstr, uid_t *restrict uid);
+
+
+inline int
+get_fd(const char *restrict fdstr, int *restrict fd)
+{
+	return a2si(fd, fdstr, NULL, 10, 0, INT_MAX);
+}
+
+
+inline int
+get_gid(const char *restrict gidstr, gid_t *restrict gid)
+{
+	return a2i(gid_t, gid, gidstr, NULL, 10, type_min(gid_t), type_max(gid_t));
+}
+
+
+inline int
+get_pid(const char *restrict pidstr, pid_t *restrict pid)
+{
+	return a2i(pid_t, pid, pidstr, NULL, 10, 1, type_max(pid_t));
+}
+
+
+inline int
+get_uid(const char *restrict uidstr, uid_t *restrict uid)
+{
+	return a2i(uid_t, uid, uidstr, NULL, 10, type_min(uid_t), type_max(uid_t));
+}
+
+
+#endif  // include guard

lib/atoi/str2i/str2i.c

@@ -0,0 +1,8 @@
+// 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/str2i.h"

lib/atoi/str2i/str2i.h

@@ -0,0 +1,31 @@
+// 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_STR2I_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STR2I_STR2I_H_
+
+
+#include <config.h>
+
+#include "atoi/str2i/str2s.h"
+#include "atoi/str2i/str2u.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__)                                                        \
+)
+
+
+#endif  // include guard

lib/atoi/str2i/str2s.c

@@ -0,0 +1,14 @@
+// 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/str2s.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);

lib/atoi/str2i/str2s.h

@@ -0,0 +1,57 @@
+// 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_STR2S_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STR2I_STR2S_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+#include <stddef.h>
+
+#include "atoi/a2i/a2s.h"
+#include "attr.h"
+
+
+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);
+
+
+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);
+}
+
+
+#endif  // include guard

lib/atoi/str2i/str2u.c

@@ -0,0 +1,14 @@
+// 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/str2u.h"
+
+
+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);

lib/atoi/str2i/str2u.h

@@ -0,0 +1,57 @@
+// 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_STR2U_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STR2I_STR2U_H_
+
+
+#include <config.h>
+
+#include <limits.h>
+#include <stddef.h>
+
+#include "atoi/a2i/a2u.h"
+#include "attr.h"
+
+
+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
+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