4 files changed, 27 insertions, 5 deletions
diff --git a/lib/dpkg/Makefile.am b/lib/dpkg/Makefile.am
index 862562c..dcf3d46 100644
--- a/lib/dpkg/Makefile.am
+++ b/lib/dpkg/Makefile.am
@@ -48,6 +48,7 @@ EXTRA_libdpkg_la_DEPENDENCIES += \
 endif
 
 libdpkg_la_LIBADD = \
+	$(PS_LIBS) \
 	$(Z_LIBS) \
 	$(LZMA_LIBS) \
 	$(ZSTD_LIBS) \
diff --git a/lib/dpkg/Makefile.in b/lib/dpkg/Makefile.in
index 3c92b54..48a72d1 100644
--- a/lib/dpkg/Makefile.in
+++ b/lib/dpkg/Makefile.in
@@ -191,7 +191,7 @@ am__DEPENDENCIES_1 =
 libdpkg_la_DEPENDENCIES = $(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
-	../compat/libcompat.la
+	$(am__DEPENDENCIES_1) ../compat/libcompat.la
 am_libdpkg_la_OBJECTS = ar.lo arch.lo atomic-file.lo buffer.lo \
 	c-ctype.lo cleanup.lo color.lo command.lo compress.lo dbdir.lo \
 	dbmodify.lo db-ctrl-access.lo db-ctrl-format.lo \
@@ -793,6 +793,7 @@ devlib_LTLIBRARIES = libdpkg.la
 EXTRA_libdpkg_la_DEPENDENCIES = libdpkg.map $(am__append_3)
 libdpkg_la_LDFLAGS = -no-undefined $(am__append_1) $(am__append_2)
 libdpkg_la_LIBADD = \
+	$(PS_LIBS) \
 	$(Z_LIBS) \
 	$(LZMA_LIBS) \
 	$(ZSTD_LIBS) \
diff --git a/lib/dpkg/execname.c b/lib/dpkg/execname.c
index 6529fcf..b43ab99 100644
--- a/lib/dpkg/execname.c
+++ b/lib/dpkg/execname.c
@@ -37,12 +37,19 @@
 #include <stdio.h>
 #include <unistd.h>
 
+#if defined(__GNU__)
+#include <hurd.h>
+#include <ps.h>
+#endif
+
 #if defined(__APPLE__) && defined(__MACH__)
 #include <libproc.h>
 #endif
 
 #include <dpkg/dpkg.h>
+#if defined(__sun)
 #include <dpkg/file.h>
+#endif
 #include <dpkg/execname.h>
 
 #if defined(_AIX) && defined(HAVE_STRUCT_PSINFO)
@@ -96,15 +103,26 @@ dpkg_get_pid_execname(pid_t pid)
 	lcontents[nread] = '\0';
 	execname = lcontents;
 #elif defined(__GNU__)
+	struct ps_context *pc;
 	struct proc_stat *ps;
+	error_t err;
+
+	if (pid < 0)
+		return NULL;
+
+	err = ps_context_create(getproc(), &pc);
+	if (err)
+		return NULL;
 
-	ps = get_proc_stat(pid, PSTAT_ARGS);
-	if (ps == NULL)
+	err = ps_context_find_proc_stat(pc, pid, &ps);
+	if (err)
 		return NULL;
 
 	/* On old Hurd systems we have to use the argv[0] value, because
 	 * there is nothing better. */
-	execname = proc_stat_args(ps);
+	if (proc_stat_set_flags(ps, PSTAT_ARGS) == 0 &&
+	    (proc_stat_flags(ps) & PSTAT_ARGS))
+		execname = proc_stat_args(ps);
 
 #ifdef PSTAT_EXE
 	/* On new Hurd systems we can use the correct value, as long
@@ -116,6 +134,8 @@ dpkg_get_pid_execname(pid_t pid)
 	    proc_stat_exe(ps)[0] != '\0')
 		execname = proc_stat_exe(ps);
 #endif
+
+	ps_context_free(pc);
 #elif defined(__sun)
 	char filename[64];
 	struct varbuf vb = VARBUF_INIT;
diff --git a/lib/dpkg/libdpkg.pc.in b/lib/dpkg/libdpkg.pc.in
index 1a91594..b658d59 100644
--- a/lib/dpkg/libdpkg.pc.in
+++ b/lib/dpkg/libdpkg.pc.in
@@ -7,5 +7,5 @@ Name: libdpkg
 Description: Debian package management system library
 Version: @VERSION@
 Libs: -L${libdir} -ldpkg
-Libs.private: @MD_LIBS@ @Z_LIBS@ @LZMA_LIBS@ @ZSTD_LIBS@ @BZ2_LIBS@
+Libs.private: @PS_LIBS@ @MD_LIBS@ @Z_LIBS@ @LZMA_LIBS@ @ZSTD_LIBS@ @BZ2_LIBS@
 Cflags: -I${includedir}