New upstream version 4.19.2

New upstream version 4.19.0
New upstream version 4.18.0
2026-01-25 14:17:08 +01:00 · 2026-01-06 00:37:15 +01:00 · 2025-08-26 22:55:14 +02:00 · 2025-03-29 13:24:20 +01:00 · 2025-02-24 22:57:12 +01:00 · 2025-02-09 18:13:39 +01:00
11054 changed files with 43551 additions and 31907 deletions
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,5 @@
 ## Process this file with automake to produce Makefile.in
-
-EXTRA_DIST = NEWS README
+ACLOCAL_AMFLAGS = -I m4

 SUBDIRS = lib

@@ -8,11 +7,22 @@ if ENABLE_SUBIDS
 SUBDIRS += libsubid
 endif

-SUBDIRS += src po contrib doc etc tests/unit
+SUBDIRS += src po doc etc tests/unit

 if ENABLE_REGENERATE_MAN
 SUBDIRS += man
 endif

 CLEANFILES = man/8.out man/po/remove-potcdate.* man/*/login.defs.d man/*/*.mo
-EXTRA_DIST = tests/
+
+EXTRA_DIST = NEWS README tests/
+
+dist-hook:
+	chmod -R u+w $(distdir)/tests
+	chmod u+w $(distdir)
+	mv $(distdir)/tests/unit $(distdir)/realunittest
+	mv $(distdir)/tests/tests $(distdir)/realtests
+	rm -rf $(distdir)/tests
+	mv $(distdir)/realtests $(distdir)/tests
+	rm -rf $(distdir)/tests/unit $(distdir)/tests/Makefile*
+	mv $(distdir)/realunittest $(distdir)/tests/unit
--- a/Makefile.in
+++ b/Makefile.in
@@ -163,11 +163,19 @@ am__define_uniq_tagged_files = \
  unique=`for i in $$list; do \
    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
  done | $(am__uniquify_input)`
-DIST_SUBDIRS = lib libsubid src po contrib doc etc tests/unit man
+DIST_SUBDIRS = lib libsubid src po doc etc tests/unit man
 am__DIST_COMMON = $(srcdir)/Makefile.in $(srcdir)/config.h.in \
+	$(top_srcdir)/build-aux/compile \
+	$(top_srcdir)/build-aux/config.guess \
+	$(top_srcdir)/build-aux/config.rpath \
+	$(top_srcdir)/build-aux/config.sub \
+	$(top_srcdir)/build-aux/install-sh \
+	$(top_srcdir)/build-aux/ltmain.sh \
+	$(top_srcdir)/build-aux/missing \
 	$(top_srcdir)/man/po/Makefile.in ABOUT-NLS AUTHORS.md COPYING \
-	ChangeLog NEWS README compile config.guess config.rpath \
-	config.sub install-sh ltmain.sh missing
+	ChangeLog NEWS README build-aux/compile build-aux/config.guess \
+	build-aux/config.rpath build-aux/config.sub \
+	build-aux/install-sh build-aux/ltmain.sh build-aux/missing
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
@@ -215,6 +223,7 @@ distcleancheck_listfiles = find . -type f -print
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AM_DISTCHECK_CONFIGURE_FLAGS = @AM_DISTCHECK_CONFIGURE_FLAGS@
 AR = @AR@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
@@ -286,7 +295,6 @@ LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
-LIYESCRYPT = @LIYESCRYPT@
 LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
@@ -333,8 +341,6 @@ XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
 XMLCATALOG = @XMLCATALOG@
 XML_CATALOG_FILE = @XML_CATALOG_FILE@
 XSLTPROC = @XSLTPROC@
-YACC = @YACC@
-YFLAGS = @YFLAGS@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
@@ -389,10 +395,11 @@ target_alias = @target_alias@
 top_build_prefix = @top_build_prefix@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
-EXTRA_DIST = tests/
-SUBDIRS = lib $(am__append_1) src po contrib doc etc tests/unit \
+ACLOCAL_AMFLAGS = -I m4
+SUBDIRS = lib $(am__append_1) src po doc etc tests/unit \
 	$(am__append_2)
 CLEANFILES = man/8.out man/po/remove-potcdate.* man/*/login.defs.d man/*/*.mo
+EXTRA_DIST = NEWS README tests/
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive

@@ -622,6 +629,9 @@ distdir-am: $(DISTFILES)
 	      || exit 1; \
 	  fi; \
 	done
+	$(MAKE) $(AM_MAKEFLAGS) \
+	  top_distdir="$(top_distdir)" distdir="$(distdir)" \
+	  dist-hook
 	-test -n "$(am__skip_mode_fix)" \
 	|| find "$(distdir)" -type d ! -perm -755 \
 		-exec chmod u+rwx,go+rx {} \; -o \
@@ -869,8 +879,8 @@ uninstall-am:
 .PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am \
 	am--refresh check check-am clean clean-cscope clean-generic \
 	clean-libtool cscope cscopelist-am ctags ctags-am dist \
-	dist-all dist-bzip2 dist-gzip dist-lzip dist-shar dist-tarZ \
-	dist-xz dist-zip dist-zstd distcheck distclean \
+	dist-all dist-bzip2 dist-gzip dist-hook dist-lzip dist-shar \
+	dist-tarZ dist-xz dist-zip dist-zstd distcheck distclean \
 	distclean-generic distclean-hdr distclean-libtool \
 	distclean-tags distcleancheck distdir distuninstallcheck dvi \
 	dvi-am html html-am info info-am install install-am \
@@ -886,6 +896,16 @@ uninstall-am:
 .PRECIOUS: Makefile


+dist-hook:
+	chmod -R u+w $(distdir)/tests
+	chmod u+w $(distdir)
+	mv $(distdir)/tests/unit $(distdir)/realunittest
+	mv $(distdir)/tests/tests $(distdir)/realtests
+	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:
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -931,7 +931,7 @@ dnl aclocal-1.4 backwards compatibility:
 dnl AC_DEFUN([AC_LTDL_DLSYM_USCORE], [])

 # pkg.m4 - Macros to locate and utilise pkg-config.   -*- Autoconf -*-
-# serial 12 (pkg-config-0.29.2)
+# serial 11 (pkg-config-0.29.1)

 dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
 dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
@@ -973,7 +973,7 @@ dnl
 dnl See the "Since" comment for each macro you use to see what version
 dnl of the macros you require.
 m4_defun([PKG_PREREQ],
-[m4_define([PKG_MACROS_VERSION], [0.29.2])
+[m4_define([PKG_MACROS_VERSION], [0.29.1])
 m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
    [m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
 ])dnl PKG_PREREQ
@@ -1074,7 +1074,7 @@ AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl

 pkg_failed=no
-AC_MSG_CHECKING([for $2])
+AC_MSG_CHECKING([for $1])

 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
@@ -1084,11 +1084,11 @@ and $1[]_LIBS to avoid the need to call pkg-config.
 See the pkg-config man page for more details.])

 if test $pkg_failed = yes; then
-        AC_MSG_RESULT([no])
+   	AC_MSG_RESULT([no])
        _PKG_SHORT_ERRORS_SUPPORTED
        if test $_pkg_short_errors_supported = yes; then
 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
-        else
+        else 
 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
        fi
 	# Put the nasty error message in config.log where it belongs
@@ -1105,7 +1105,7 @@ installed software in a non-standard prefix.
 _PKG_TEXT])[]dnl
        ])
 elif test $pkg_failed = untried; then
-        AC_MSG_RESULT([no])
+     	AC_MSG_RESULT([no])
 	m4_default([$4], [AC_MSG_FAILURE(
 [The pkg-config script could not be found or is too old.  Make sure it
 is in your PATH or set the PKG_CONFIG environment variable to the full
@@ -1206,6 +1206,74 @@ AS_VAR_COPY([$1], [pkg_cv_][$1])
 AS_VAR_IF([$1], [""], [$5], [$4])dnl
 ])dnl PKG_CHECK_VAR

+dnl PKG_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl   [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND],
+dnl   [DESCRIPTION], [DEFAULT])
+dnl ------------------------------------------
+dnl
+dnl Prepare a "--with-" configure option using the lowercase
+dnl [VARIABLE-PREFIX] name, merging the behaviour of AC_ARG_WITH and
+dnl PKG_CHECK_MODULES in a single macro.
+AC_DEFUN([PKG_WITH_MODULES],
+[
+m4_pushdef([with_arg], m4_tolower([$1]))
+
+m4_pushdef([description],
+           [m4_default([$5], [build with ]with_arg[ support])])
+
+m4_pushdef([def_arg], [m4_default([$6], [auto])])
+m4_pushdef([def_action_if_found], [AS_TR_SH([with_]with_arg)=yes])
+m4_pushdef([def_action_if_not_found], [AS_TR_SH([with_]with_arg)=no])
+
+m4_case(def_arg,
+            [yes],[m4_pushdef([with_without], [--without-]with_arg)],
+            [m4_pushdef([with_without],[--with-]with_arg)])
+
+AC_ARG_WITH(with_arg,
+     AS_HELP_STRING(with_without, description[ @<:@default=]def_arg[@:>@]),,
+    [AS_TR_SH([with_]with_arg)=def_arg])
+
+AS_CASE([$AS_TR_SH([with_]with_arg)],
+            [yes],[PKG_CHECK_MODULES([$1],[$2],$3,$4)],
+            [auto],[PKG_CHECK_MODULES([$1],[$2],
+                                        [m4_n([def_action_if_found]) $3],
+                                        [m4_n([def_action_if_not_found]) $4])])
+
+m4_popdef([with_arg])
+m4_popdef([description])
+m4_popdef([def_arg])
+
+])dnl PKG_WITH_MODULES
+
+dnl PKG_HAVE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl   [DESCRIPTION], [DEFAULT])
+dnl -----------------------------------------------
+dnl
+dnl Convenience macro to trigger AM_CONDITIONAL after PKG_WITH_MODULES
+dnl check._[VARIABLE-PREFIX] is exported as make variable.
+AC_DEFUN([PKG_HAVE_WITH_MODULES],
+[
+PKG_WITH_MODULES([$1],[$2],,,[$3],[$4])
+
+AM_CONDITIONAL([HAVE_][$1],
+               [test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"])
+])dnl PKG_HAVE_WITH_MODULES
+
+dnl PKG_HAVE_DEFINE_WITH_MODULES(VARIABLE-PREFIX, MODULES,
+dnl   [DESCRIPTION], [DEFAULT])
+dnl ------------------------------------------------------
+dnl
+dnl Convenience macro to run AM_CONDITIONAL and AC_DEFINE after
+dnl PKG_WITH_MODULES check. HAVE_[VARIABLE-PREFIX] is exported as make
+dnl and preprocessor variable.
+AC_DEFUN([PKG_HAVE_DEFINE_WITH_MODULES],
+[
+PKG_HAVE_WITH_MODULES([$1],[$2],[$3],[$4])
+
+AS_IF([test "$AS_TR_SH([with_]m4_tolower([$1]))" = "yes"],
+        [AC_DEFINE([HAVE_][$1], 1, [Enable ]m4_tolower([$1])[ support])])
+])dnl PKG_HAVE_DEFINE_WITH_MODULES
+
 # Copyright (C) 2002-2021 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
--- a/build-aux/compile
+++ b/build-aux/compile
--- a/build-aux/config.guess
+++ b/build-aux/config.guess
--- a/build-aux/config.rpath
+++ b/build-aux/config.rpath
--- a/build-aux/config.sub
+++ b/build-aux/config.sub
--- a/build-aux/depcomp
+++ b/build-aux/depcomp
--- a/build-aux/install-sh
+++ b/build-aux/install-sh
--- a/build-aux/ltmain.sh
+++ b/build-aux/ltmain.sh
--- a/build-aux/missing
+++ b/build-aux/missing
--- a/build-aux/test-driver
+++ b/build-aux/test-driver
--- a/config.h.in
+++ b/config.h.in
@@ -20,10 +20,6 @@
 /* Path for faillog file. */
 #undef FAILLOG_FILE

-/* Define to the type of elements in the array set by `getgroups'. Usually
-   this is either `int' or `gid_t'. */
-#undef GETGROUPS_T
-
 /* max group name length */
 #undef GROUP_NAME_MAX_LENGTH

@@ -53,9 +49,6 @@
   the CoreFoundation framework. */
 #undef HAVE_CFPREFERENCESCOPYAPPVALUE

-/* Define to 1 if you have the <crypt.h> header file. */
-#undef HAVE_CRYPT_H
-
 /* Define if the GNU dcgettext() function is already present or preinstalled.
   */
 #undef HAVE_DCGETTEXT
@@ -98,45 +91,27 @@
 /* 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 to 1 if you have the <gshadow.h> header file. */
-#undef HAVE_GSHADOW_H
-
 /* Define if you have the iconv() function and it works. */
 #undef HAVE_ICONV

-/* Define to 1 if you have the `initgroups' function. */
-#undef HAVE_INITGROUPS
-
 /* 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 <lastlog.h> header file. */
-#undef HAVE_LASTLOG_H
-
 /* Define to 1 if you have the `lckpwdf' function. */
 #undef HAVE_LCKPWDF

@@ -164,9 +139,6 @@
 /* Define to 1 if you have the <minix/config.h> header file. */
 #undef HAVE_MINIX_CONFIG_H

-/* Define to 1 if you have the <paths.h> header file. */
-#undef HAVE_PATHS_H
-
 /* Define to 1 if you have the `putgrent' function. */
 #undef HAVE_PUTGRENT

@@ -179,9 +151,6 @@
 /* Define to 1 if you have the <readpassphrase.h> header file. */
 #undef HAVE_READPASSPHRASE_H

-/* Define to 1 if you have the <rpc/key_prot.h> header file. */
-#undef HAVE_RPC_KEY_PROT_H
-
 /* Define to 1 if you have the `rpmatch' function. */
 #undef HAVE_RPMATCH

@@ -197,9 +166,6 @@
 /* Define to 1 if you have the <semanage/semanage.h> header file. */
 #undef HAVE_SEMANAGE_SEMANAGE_H

-/* Define to 1 if you have the `setgroups' function. */
-#undef HAVE_SETGROUPS
-
 /* Define to 1 if you have the `sgetgrent' function. */
 #undef HAVE_SGETGRENT

@@ -209,12 +175,6 @@
 /* Define to 1 if you have the `sgetspent' function. */
 #undef HAVE_SGETSPENT

-/* Define to 1 if you have the <sgtty.h> header file. */
-#undef HAVE_SGTTY_H
-
-/* Have working shadow group support in libc */
-#undef HAVE_SHADOWGRP
-
 /* Define if you have the shl_load function. */
 #undef HAVE_SHL_LOAD

@@ -260,15 +220,6 @@
 /* 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/capability.h> header file. */
-#undef HAVE_SYS_CAPABILITY_H
-
-/* Define to 1 if you have the <sys/ioctl.h> header file. */
-#undef HAVE_SYS_IOCTL_H
-
-/* Define to 1 if you have the <sys/random.h> header file. */
-#undef HAVE_SYS_RANDOM_H
-
 /* Define to 1 if you have the <sys/statfs.h> header file. */
 #undef HAVE_SYS_STATFS_H

@@ -281,9 +232,6 @@
 /* Define to 1 if you have the <tcb.h> header file. */
 #undef HAVE_TCB_H

-/* Define to 1 if you have the <termio.h> header file. */
-#undef HAVE_TERMIO_H
-
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H

@@ -296,18 +244,12 @@
 /* Define to 1 if `utime(file, NULL)' sets file's timestamp to the present. */
 #undef HAVE_UTIME_NULL

-/* Define to 1 if you have the <utmp.h> header file. */
-#undef HAVE_UTMP_H
-
 /* 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

@@ -511,15 +453,3 @@

 /* Define for large files, on AIX-style hosts. */
 #undef _LARGE_FILES
-
-/* Path for utmp file. */
-#undef _UTMP_FILE
-
-/* Path for wtmp file. */
-#undef _WTMP_FILE
-
-/* Define to `int' if <sys/types.h> doesn't define. */
-#undef gid_t
-
-/* Define to `int' if <sys/types.h> doesn't define. */
-#undef uid_t
--- a/1059
+++ b/1059
--- a/configure.ac
+++ b/configure.ac
@@ -1,24 +1,29 @@
 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_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], [4.16.0], [pkg-shadow-devel@lists.alioth.debian.org], [],
+
+AC_INIT([shadow], [4.19.2], [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_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h])

+AM_INIT_AUTOMAKE([1.11 foreign dist-xz subdir-objects tar-pax])
+AM_SILENT_RULES([yes])
+
+AC_SUBST([AM_DISTCHECK_CONFIGURE_FLAGS], ["$ac_configure_args"])
+
 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=""
+test "x$prefix" = "xNONE" && prefix="/usr"
+test "X$prefix" = "X/usr" && exec_prefix=""

 AC_USE_SYSTEM_EXTENSIONS

@@ -30,29 +35,21 @@ 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 Checks for header files.
-AC_CHECK_HEADERS(crypt.h utmp.h \
-	termio.h sgtty.h sys/ioctl.h paths.h \
-	sys/capability.h sys/random.h \
-	gshadow.h lastlog.h rpc/key_prot.h acl/libacl.h \
-	attr/libattr.h attr/error_context.h)
-
 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_HEADER([shadow.h],[],[AC_MSG_ERROR([You need a libc with shadow.h])])

-AC_CHECK_FUNCS(arc4random_buf futimes \
-	getentropy getrandom getspnam getusershell \
-	initgroups lckpwdf lutimes \
-	setgroups updwtmpx innetgr \
+AC_CHECK_FUNCS([arc4random_buf \
+	getentropy getrandom \
+	lckpwdf lutimes \
+	updwtmpx innetgr \
 	getspnam_r \
 	rpmatch \
-	memset_explicit explicit_bzero stpecpy stpeprintf)
+	memset_explicit explicit_bzero stpecpy stpeprintf])
 AC_SYS_LARGEFILE

 dnl Checks for typedefs, structures, and compiler characteristics.
@@ -63,273 +60,230 @@ AC_CHECK_MEMBERS([struct utmpx.ut_name,
                  struct utmpx.ut_addr,
                  struct utmpx.ut_addr_v6,
                  struct utmpx.ut_time,
-                  struct utmpx.ut_xtime],,,[[#include <utmpx.h>]])
+                  struct utmpx.ut_xtime],[],[],[[#include <utmpx.h>]])

 dnl Checks for library functions.
-AC_TYPE_GETGROUPS
 AC_FUNC_UTIME_NULL
-AC_REPLACE_FUNCS(putgrent putpwent putspent)
-AC_REPLACE_FUNCS(sgetgrent sgetpwent sgetspent)
+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_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'])]
+)

-if test "$ac_cv_header_shadow_h" = "yes"; then
-	AC_CACHE_CHECK(for working shadow group support,
-		ac_cv_libc_shadowgrp,
-		AC_RUN_IFELSE([AC_LANG_SOURCE([
-				#include <shadow.h>
-				#ifdef HAVE_GSHADOW_H
-				#include <gshadow.h>
-				#endif
-				int
-				main()
-				{
-					struct sgrp *sg = sgetsgent("test:x::");
-					/* NYS libc on Red Hat 3.0.3 has broken shadow group support */
-					return !sg || !sg->sg_adm || !sg->sg_mem;
-				}]
-			)],
-			[ac_cv_libc_shadowgrp=yes],
-			[ac_cv_libc_shadowgrp=no],
-			[ac_cv_libc_shadowgrp=no]
-		)
-	)
-
-	if test "$ac_cv_libc_shadowgrp" = "yes"; then
-		AC_DEFINE(HAVE_SHADOWGRP, 1, [Have working shadow group support in libc])
-	fi
-fi
-
-AC_CACHE_CHECK([location of shared mail directory], shadow_cv_maildir,
+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",
+	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,
+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",
+	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 utmp], shadow_cv_utmpdir,
-[for shadow_cv_utmpdir in /var/run /var/adm /usr/adm /etc none; do
-	if test -f $shadow_cv_utmpdir/utmp; then
-		break
-	fi
-done])
-if test "$shadow_cv_utmpdir" = "none"; then
-	AC_MSG_WARN(utmp file not found)
-fi
-AC_DEFINE_UNQUOTED(_UTMP_FILE, "$shadow_cv_utmpdir/utmp",
-	[Path for utmp file.])
-
-AC_CACHE_CHECK([location of faillog/lastlog/wtmp], shadow_cv_logdir,
+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",
+AC_DEFINE_UNQUOTED([FAILLOG_FILE], ["$shadow_cv_logdir/faillog"],
 	[Path for faillog file.])

-AC_CACHE_CHECK([location of the passwd program], shadow_cv_passwd_dir,
-[if test -f /usr/bin/passwd; then
-	shadow_cv_passwd_dir=/usr/bin
-else
-	shadow_cv_passwd_dir=/bin
-fi])
-AC_DEFINE_UNQUOTED(PASSWD_PROGRAM, "$shadow_cv_passwd_dir/passwd",
+AC_DEFINE_UNQUOTED([PASSWD_PROGRAM], ["$exec_prefix/bin/passwd"],
 	[Path to passwd program.])

-AC_ARG_ENABLE(shadowgrp,
+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) ;;
+	   *) AC_MSG_ERROR([bad value ${enableval} for --enable-shadowgrp]) ;;
 	 esac],
 	[enable_shadowgrp="yes"]
 )

-AC_ARG_ENABLE(man,
+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,
+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)
+	   *) AC_MSG_ERROR([bad value ${enableval} for --enable-account-tools-setuid])
 	   ;;
 	 esac],
 	[enable_acct_tools_setuid="no"]
 )

-AC_ARG_ENABLE(subordinate-ids,
+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,
+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="${enableval}"],
+AC_ARG_ENABLE([logind],
+	[AS_HELP_STRING([--disable-logind],
+		[disable logind integration])],
+	[
+		AS_CASE([${enableval}],
+			[yes],[],
+			[no],[],
+			[AC_MSG_ERROR([bad parameter value for --enable-logind=${enableval}.  ]dnl
+[Supported values are: --enable-logind (or --enable-logind=yes) and --disable-logind (or --enable-logind=no).])]
+		)
+	],
 	[enable_logind="yes"]
 )

-AC_ARG_WITH(audit,
+AC_ARG_WITH([audit],
 	[AS_HELP_STRING([--with-audit], [use auditing support @<:@default=yes if found@:>@])],
 	[with_audit=$withval], [with_audit=maybe])
-AC_ARG_WITH(libpam,
+AC_ARG_WITH([libpam],
 	[AS_HELP_STRING([--with-libpam], [use libpam for PAM support @<:@default=yes if found@:>@])],
 	[with_libpam=$withval], [with_libpam=maybe])
-AC_ARG_WITH(btrfs,
+AC_ARG_WITH([btrfs],
 	[AS_HELP_STRING([--with-btrfs], [add BtrFS support @<:@default=yes if found@:>@])],
 	[with_btrfs=$withval], [with_btrfs=maybe])
-AC_ARG_WITH(selinux,
+AC_ARG_WITH([selinux],
 	[AS_HELP_STRING([--with-selinux], [use SELinux support @<:@default=yes if found@:>@])],
 	[with_selinux=$withval], [with_selinux=maybe])
-AC_ARG_WITH(acl,
+AC_ARG_WITH([acl],
 	[AS_HELP_STRING([--with-acl], [use ACL support @<:@default=yes if found@:>@])],
 	[with_acl=$withval], [with_acl=maybe])
-AC_ARG_WITH(attr,
+AC_ARG_WITH([attr],
 	[AS_HELP_STRING([--with-attr], [use Extended Attribute support @<:@default=yes if found@:>@])],
 	[with_attr=$withval], [with_attr=maybe])
-AC_ARG_WITH(skey,
+AC_ARG_WITH([skey],
 	[AS_HELP_STRING([--with-skey], [use S/Key support @<:@default=no@:>@])],
 	[with_skey=$withval], [with_skey=no])
-AC_ARG_WITH(tcb,
+AC_ARG_WITH([tcb],
 	[AS_HELP_STRING([--with-tcb], [use tcb support (incomplete) @<:@default=yes if found@:>@])],
 	[with_tcb=$withval], [with_tcb=maybe])
-AC_ARG_WITH(sha-crypt,
+AC_ARG_WITH([sha-crypt],
 	[AS_HELP_STRING([--with-sha-crypt], [allow the SHA256 and SHA512 password encryption algorithms @<:@default=yes@:>@])],
 	[with_sha_crypt=$withval], [with_sha_crypt=yes])
-AC_ARG_WITH(bcrypt,
+AC_ARG_WITH([bcrypt],
 	[AS_HELP_STRING([--with-bcrypt], [allow the bcrypt password encryption algorithm @<:@default=no@:>@])],
 	[with_bcrypt=$withval], [with_bcrypt=no])
-AC_ARG_WITH(yescrypt,
+AC_ARG_WITH([yescrypt],
 	[AS_HELP_STRING([--with-yescrypt], [allow the yescrypt password encryption algorithm @<:@default=no@:>@])],
 	[with_yescrypt=$withval], [with_yescrypt=no])
-AC_ARG_WITH(nscd,
+AC_ARG_WITH([nscd],
 	[AS_HELP_STRING([--with-nscd], [enable support for nscd @<:@default=yes@:>@])],
 	[with_nscd=$withval], [with_nscd=yes])
-AC_ARG_WITH(sssd,
+AC_ARG_WITH([sssd],
 	[AS_HELP_STRING([--with-sssd], [enable support for flushing sssd caches @<:@default=yes@:>@])],
 	[with_sssd=$withval], [with_sssd=yes])
-AC_ARG_WITH(group-name-max-length,
+AC_ARG_WITH([group-name-max-length],
 	[AS_HELP_STRING([--with-group-name-max-length], [set max group name length @<:@default=32@:>@])],
 	[with_group_name_max_length=$withval], [with_group_name_max_length=yes])
-AC_ARG_WITH(su,
+AC_ARG_WITH([su],
 	[AS_HELP_STRING([--with-su], [build and install su program and man page @<:@default=yes@:>@])],
 	[with_su=$withval], [with_su=yes])
-AC_ARG_WITH(libbsd,
+AC_ARG_WITH([libbsd],
 	[AS_HELP_STRING([--with-libbsd], [use libbsd support @<:@default=yes if found@:>@])],
 	[with_libbsd=$withval], [with_libbsd=yes])

-if test "$with_group_name_max_length" = "no" ; then
+if test "X$with_group_name_max_length" = "Xno" ; then
 	with_group_name_max_length=0
-elif test "$with_group_name_max_length" = "yes" ; then
+elif test "X$with_group_name_max_length" = "Xyes" ; then
 	with_group_name_max_length=32
 fi
-AC_DEFINE_UNQUOTED(GROUP_NAME_MAX_LENGTH, $with_group_name_max_length, [max group name length])
-AC_SUBST(GROUP_NAME_MAX_LENGTH)
+AC_DEFINE_UNQUOTED([GROUP_NAME_MAX_LENGTH], [$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])
+AM_CONDITIONAL([USE_SHA_CRYPT], [test "x$with_sha_crypt" = "xyes"])
+if test "X$with_sha_crypt" = "Xyes"; 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])
+AM_CONDITIONAL([USE_BCRYPT], [test "x$with_bcrypt" = "xyes"])
+if test "X$with_bcrypt" = "Xyes"; 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])
+AM_CONDITIONAL([USE_YESCRYPT], [test "x$with_yescrypt" = "xyes"])
+if test "X$with_yescrypt" = "Xyes"; then
+	AC_DEFINE([USE_YESCRYPT], [1], [Define to allow the yescrypt password encryption algorithm])
 fi

-if test "$with_nscd" = "yes"; then
-	AC_CHECK_FUNC(posix_spawn,
-	              [AC_DEFINE(USE_NSCD, 1, [Define to support flushing of nscd caches])],
+if test "X$with_nscd" = "Xyes"; 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 "$with_sssd" = "yes"; then
-	AC_CHECK_FUNC(posix_spawn,
-	              [AC_DEFINE(USE_SSSD, 1, [Define to support flushing of sssd caches])],
+if test "X$with_sssd" = "Xyes"; 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 "$with_su" != "no"], AC_DEFINE(WITH_SU, 1, [Build with su]))
+AS_IF([test "$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)
+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_ARG_ENABLE([vendordir],
+    [AS_HELP_STRING([--enable-vendordir=DIR], [Directory for distribution provided configuration files])],[],[])
 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([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.])
+	AC_DEFINE([HAVE_VENDORDIR], [1], [Define to support vendor settings.])
 fi
 AM_CONDITIONAL([HAVE_VENDORDIR], [test "x$enable_vendordir" != x])

-if test "$enable_shadowgrp" = "yes"; then
-	AC_DEFINE(SHADOWGRP, 1, [Define to support the shadow group file.])
+if test "X$enable_shadowgrp" = "Xyes"; then
+	AC_DEFINE([SHADOWGRP], [1], [Define to support the shadow group file.])
 fi
-AM_CONDITIONAL(SHADOWGRP, test "x$enable_shadowgrp" = "xyes")
+AM_CONDITIONAL([SHADOWGRP], [test "x$enable_shadowgrp" = "xyes"])

-if test "$enable_man" = "yes"; then
+if test "X$enable_man" = "Xyes"; then
 	dnl
 	dnl Check for xsltproc
 	dnl
@@ -341,21 +295,21 @@ if test "$enable_man" = "yes"; then

 	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)
+		[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)
+		[DocBook XSL Stylesheets >= 1.70.1], [], [enable_man=no])
 fi
-AM_CONDITIONAL(ENABLE_REGENERATE_MAN, test "x$enable_man" != "xno")
+AM_CONDITIONAL([ENABLE_REGENERATE_MAN], [test "x$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"])
+	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.])
+		AC_DEFINE([ENABLE_SUBIDS], [1], [Define to support the subordinate IDs.])
 		enable_subids="yes"
 	else
 		if test "x$enable_subids" = "xyes"; then
@@ -364,55 +318,54 @@ if test "$enable_subids" != "no"; then
 		enable_subids="no"
 	fi
 fi
-AM_CONDITIONAL(ENABLE_SUBIDS, test "x$enable_subids" != "xno")
+AM_CONDITIONAL([ENABLE_SUBIDS], [test "x$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;]
-				)],
+if test "X$enable_lastlog" = "Xyes" && test "X$ac_cv_header_lastlog_h" = "Xyes"; 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]
-		)
+			[ac_cv_struct_lastlog_ll_host=no])
+		]
 	)

-	if test "$ac_cv_struct_lastlog_ll_host" = "yes"; then
-		AC_DEFINE(HAVE_LL_HOST, 1,
+	if test "X$ac_cv_struct_lastlog_ll_host" = "Xyes"; then
+		AC_DEFINE([HAVE_LL_HOST], [1],
 			[Define if struct lastlog has ll_host])
-		AC_DEFINE(ENABLE_LASTLOG, 1, [Define to support lastlog.])
+		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"
+		enable_lastlog="no"
 	fi
 fi
-AM_CONDITIONAL(ENABLE_LASTLOG, test "x$enable_lastlog" != "xno")
+AM_CONDITIONAL([ENABLE_LASTLOG], [test "x$enable_lastlog" != "xno"])

-AC_SUBST(LIBSYSTEMD)
-if test "$enable_logind" = "yes"; then
-	AC_CHECK_LIB(systemd, sd_session_get_remote_host,
-		[enable_logind="yes"; [LIBSYSTEMD=-lsystemd];
-		AC_DEFINE(ENABLE_LOGIND, 1,
-			[Define to manage session support with logind.])],
-		[enable_logind="no"])
+AC_SUBST([LIBSYSTEMD])
+if test "X$enable_logind" = "Xyes"; then
+	AC_CHECK_LIB([systemd], [sd_session_get_remote_host],
+		[
+			LIBSYSTEMD=-lsystemd
+			AC_DEFINE([ENABLE_LOGIND], [1], [Define to manage session support with logind.])
+		],[
+			AC_MSG_ERROR([libsystemd not found.  If logind integration is not required, disable it using the --disable-logind option. ]dnl
+[ If logind integration is required, consider installing systemd or another package that provides libsystemd.])
+		]
+	)
 fi
-AM_CONDITIONAL(ENABLE_LOGIND, test "x$enable_logind" != "xno")
+AM_CONDITIONAL([ENABLE_LOGIND], [test "X$enable_logind" = "Xyes"])

-AC_SUBST(LIBCRYPT)
-AC_CHECK_LIB(crypt, crypt, [LIBCRYPT=-lcrypt],
+AC_CHECK_LIB([crypt], [crypt], [LIBCRYPT=-lcrypt],
 	[AC_MSG_ERROR([crypt() not found])])
+AC_SUBST([LIBCRYPT])

-AC_SUBST(LIYESCRYPT)
-AC_CHECK_LIB(crypt, crypt, [LIYESCRYPT=-lcrypt],
-	[AC_MSG_ERROR([crypt() not found])])
-
-AC_SUBST(LIBBSD)
+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"], [
+	AS_IF([test "X$ac_cv_search_readpassphrase" = "X-lbsd"], [
 		PKG_CHECK_MODULES([LIBBSD], [libbsd-overlay])
 	])
 	dnl Make sure either the libc or libbsd provide the header.
@@ -423,29 +376,29 @@ if test "$with_libbsd" != "no"; then
 		AC_MSG_ERROR([readpassphrase.h is missing])
 	])
 	CFLAGS="$save_CFLAGS"
-	AC_DEFINE(WITH_LIBBSD, 1, [Build shadow with libbsd support])
+	AC_DEFINE([WITH_LIBBSD], [1], [Build shadow with libbsd support])
 else
-	AC_DEFINE(WITH_LIBBSD, 0, [Build shadow without libbsd support])
+	AC_DEFINE([WITH_LIBBSD], [0], [Build shadow without libbsd support])
 fi
-AM_CONDITIONAL(WITH_LIBBSD, test x$with_libbsd = xyes)
+AM_CONDITIONAL([WITH_LIBBSD], [test x$with_libbsd = xyes])

-AC_SUBST(LIBACL)
+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$with_acl" = "noyes" ; then
+	AC_CHECK_HEADERS([acl/libacl.h attr/error_context.h], [acl_header="yes"], [acl_header="no"])
+	if test "X$acl_header$with_acl" = "Xnoyes" ; then
 		AC_MSG_ERROR([acl/libacl.h or attr/error_context.h is missing])
-	elif test "$acl_header" = "yes" ; then
-		AC_CHECK_LIB(acl, perm_copy_file,
-		             [AC_CHECK_LIB(acl, perm_copy_fd,
+	elif test "X$acl_header" = "Xyes" ; then
+		AC_CHECK_LIB([acl], [perm_copy_file],
+		             [AC_CHECK_LIB([acl], [perm_copy_fd],
 		                           [acl_lib="yes"],
 		                           [acl_lib="no"])],
 		             [acl_lib="no"])
-		if test "$acl_lib$with_acl" = "noyes" ; then
+		if test "X$acl_lib$with_acl" = "Xnoyes" ; then
 			AC_MSG_ERROR([libacl not found])
-		elif test "$acl_lib" = "no" ; then
+		elif test "X$acl_lib" = "Xno" ; then
 			with_acl="no"
 		else
-			AC_DEFINE(WITH_ACL, 1,
+			AC_DEFINE([WITH_ACL], [1],
 			          [Build shadow with ACL support])
 			LIBACL="-lacl"
 			with_acl="yes"
@@ -455,23 +408,23 @@ if test "$with_acl" != "no"; then
 	fi
 fi

-AC_SUBST(LIBATTR)
+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$with_attr" = "noyes" ; then
+	AC_CHECK_HEADERS([attr/libattr.h attr/error_context.h], [attr_header="yes"], [attr_header="no"])
+	if test "X$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,
+	elif test "X$attr_header" = "Xyes" ; then
+		AC_CHECK_LIB([attr], [attr_copy_file],
+		             [AC_CHECK_LIB([attr], [attr_copy_fd],
 		                           [attr_lib="yes"],
 		                           [attr_lib="no"])],
 		             [attr_lib="no"])
-		if test "$attr_lib$with_attr" = "noyes" ; then
+		if test "X$attr_lib$with_attr" = "Xnoyes" ; then
 			AC_MSG_ERROR([libattr not found])
-		elif test "$attr_lib" = "no" ; then
+		elif test "X$attr_lib" = "Xno" ; then
 			with_attr="no"
 		else
-			AC_DEFINE(WITH_ATTR, 1,
+			AC_DEFINE([WITH_ATTR], [1],
 			          [Build shadow with Extended Attributes support])
 			LIBATTR="-lattr"
 			with_attr="yes"
@@ -481,29 +434,29 @@ if test "$with_attr" != "no"; then
 	fi
 fi

-AC_SUBST(LIBAUDIT)
+AC_SUBST([LIBAUDIT])
 if test "$with_audit" != "no"; then
-	AC_CHECK_HEADER(libaudit.h, [audit_header="yes"], [audit_header="no"])
-	if test "$audit_header$with_audit" = "noyes" ; then
+	AC_CHECK_HEADER([libaudit.h], [audit_header="yes"], [audit_header="no"])
+	if test "X$audit_header$with_audit" = "Xnoyes" ; then
 		AC_MSG_ERROR([libaudit.h is missing])
-	elif test "$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
+	elif test "X$audit_header" = "Xyes"; then
+		AC_CHECK_DECL([AUDIT_ADD_USER],[],[audit_header="no"],[[#include <libaudit.h>]])
+		AC_CHECK_DECL([AUDIT_DEL_USER],[],[audit_header="no"],[[#include <libaudit.h>]])
+		AC_CHECK_DECL([AUDIT_ADD_GROUP],[],[audit_header="no"],[[#include <libaudit.h>]])
+		AC_CHECK_DECL([AUDIT_DEL_GROUP],[],[audit_header="no"],[[#include <libaudit.h>]])
+		if test "X$audit_header$with_audit" = "Xnoyes" ; then
 			AC_MSG_ERROR([AUDIT_ADD_USER AUDIT_DEL_USER AUDIT_ADD_GROUP or AUDIT_DEL_GROUP missing from libaudit.h])
 		fi
 	fi
-	if test "$audit_header" = "yes"; then
-		AC_CHECK_LIB(audit, audit_log_acct_message,
+	if test "X$audit_header" = "Xyes"; then
+		AC_CHECK_LIB([audit], [audit_log_acct_message],
 		             [audit_lib="yes"], [audit_lib="no"])
-		if test "$audit_lib$with_audit" = "noyes" ; then
+		if test "X$audit_lib$with_audit" = "Xnoyes" ; then
 			AC_MSG_ERROR([libaudit not found])
-		elif test "$audit_lib" = "no" ; then
+		elif test "X$audit_lib" = "Xno" ; then
 			with_audit="no"
 		else
-			AC_DEFINE(WITH_AUDIT, 1,
+			AC_DEFINE([WITH_AUDIT], [1],
 			          [Define if you want to enable Audit messages])
 			LIBAUDIT="-laudit"
 			with_audit="yes"
@@ -516,43 +469,43 @@ fi
 if test "$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
+	if test "X$btrfs_headers$with_btrfs" = "Xnoyes" ; then
 		AC_MSG_ERROR([One of sys/statfs.h linux/magic.h linux/btrfs_tree.h is missing])
 	fi

-	if test "$btrfs_headers" = "yes" ; then
-		AC_DEFINE(WITH_BTRFS, 1, [Build shadow with BtrFS support])
+	if test "X$btrfs_headers" = "Xyes" ; then
+		AC_DEFINE([WITH_BTRFS], [1], [Build shadow with BtrFS support])
 		with_btrfs="yes"
 	fi
 fi
-AM_CONDITIONAL(WITH_BTRFS, test x$with_btrfs = xyes)
+AM_CONDITIONAL([WITH_BTRFS], [test x$with_btrfs = xyes])

-AC_SUBST(LIBSELINUX)
-AC_SUBST(LIBSEMANAGE)
+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$with_selinux" = "noyes" ; then
+	AC_CHECK_HEADERS([selinux/selinux.h], [selinux_header="yes"], [selinux_header="no"])
+	if test "X$selinux_header$with_selinux" = "Xnoyes" ; 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_CHECK_HEADERS([semanage/semanage.h], [semanage_header="yes"], [semanage_header="no"])
+	if test "X$semanage_header$with_selinux" = "Xnoyes" ; 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
+	if test "X$selinux_header$semanage_header" = "Xyesyes" ; then
+		AC_CHECK_LIB([selinux], [is_selinux_enabled], [selinux_lib="yes"], [selinux_lib="no"])
+		if test "X$selinux_lib$with_selinux" = "Xnoyes" ; 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_CHECK_LIB([semanage], [semanage_connect], [semanage_lib="yes"], [semanage_lib="no"])
+		if test "X$semanage_lib$with_selinux" = "Xnoyes" ; then
 			AC_MSG_ERROR([libsemanage not found])
 		fi

-		if test "$selinux_lib$semanage_lib" = "yesyes" ; then
-			AC_DEFINE(WITH_SELINUX, 1,
+		if test "X$selinux_lib$semanage_lib" = "Xyesyes" ; then
+			AC_DEFINE([WITH_SELINUX], [1],
 			          [Build shadow with SELinux support])
 			LIBSELINUX="-lselinux"
 			LIBSEMANAGE="-lsemanage"
@@ -565,19 +518,19 @@ if test "$with_selinux" != "no"; then
 	fi
 fi

-AC_SUBST(LIBTCB)
+AC_SUBST([LIBTCB])
 if test "$with_tcb" != "no"; then
-	AC_CHECK_HEADERS(tcb.h, [tcb_header="yes"], [tcb_header="no"])
-	if test "$tcb_header$with_tcb" = "noyes" ; then
+	AC_CHECK_HEADERS([tcb.h], [tcb_header="yes"], [tcb_header="no"])
+	if test "X$tcb_header$with_tcb" = "Xnoyes" ; then
 		AC_MSG_ERROR([tcb.h is missing])
-	elif test "$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
+	elif test "X$tcb_header" = "Xyes" ; then
+		AC_CHECK_LIB([tcb], [tcb_is_suspect], [tcb_lib="yes"], [tcb_lib="no"])
+		if test "X$tcb_lib$with_tcb" = "Xnoyes" ; then
 			AC_MSG_ERROR([libtcb not found])
-		elif test "$tcb_lib" = "no" ; then
+		elif test "X$tcb_lib" = "Xno" ; then
 			with_tcb="no"
 		else
-			AC_DEFINE(WITH_TCB, 1, [Build shadow with tcb support (incomplete)])
+			AC_DEFINE([WITH_TCB], [1], [Build shadow with tcb support (incomplete)])
 			LIBTCB="-ltcb"
 			with_tcb="yes"
 		fi
@@ -585,39 +538,39 @@ if test "$with_tcb" != "no"; then
 		with_tcb="no"
 	fi
 fi
-AM_CONDITIONAL(WITH_TCB, test x$with_tcb = xyes)
+AM_CONDITIONAL([WITH_TCB], [test x$with_tcb = xyes])

-AC_SUBST(LIBPAM)
+AC_SUBST([LIBPAM])
 if test "$with_libpam" != "no"; then
-	AC_CHECK_LIB(pam, pam_start,
+	AC_CHECK_LIB([pam], [pam_start],
 	             [pam_lib="yes"], [pam_lib="no"])
-	if test "$pam_lib$with_libpam" = "noyes" ; then
-		AC_MSG_ERROR(libpam not found)
+	if test "X$pam_lib$with_libpam" = "Xnoyes" ; then
+		AC_MSG_ERROR([libpam not found])
 	fi

 	LIBPAM="-lpam"
 	pam_conv_function="no"

-	AC_CHECK_LIB(pam, openpam_ttyconv,
+	AC_CHECK_LIB([pam], [openpam_ttyconv],
 	             [pam_conv_function="openpam_ttyconv"],
-	             AC_CHECK_LIB(pam_misc, misc_conv,
-	                          [pam_conv_function="misc_conv"; LIBPAM="$LIBPAM -lpam_misc"])
+	             [AC_CHECK_LIB([pam_misc], [misc_conv],
+	                           [pam_conv_function="misc_conv"; LIBPAM="$LIBPAM -lpam_misc"])]
 	            )

-	if test "$pam_conv_function$with_libpam" = "noyes" ; then
-		AC_MSG_ERROR(PAM conversation function not found)
+	if test "X$pam_conv_function$with_libpam" = "Xnoyes" ; 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)
+	                 [[#include <security/pam_appl.h>]] )
+	if test "X$pam_headers_found$with_libpam" = "Xnoyes" ; then
+	                AC_MSG_ERROR([PAM headers not found])
 	fi


-	if test "$pam_lib$pam_headers_found" = "yesyes" -a "$pam_conv_function" != "no" ; then
+	if test "X$pam_lib$pam_headers_found" = "Xyesyes" && test "$pam_conv_function" != "no" ; then
 		with_libpam="yes"
 	else
 		with_libpam="no"
@@ -625,87 +578,86 @@ if test "$with_libpam" != "no"; then
 	fi
 fi
 dnl Now with_libpam is either yes or no
-if test "$with_libpam" = "yes"; then
+if test "X$with_libpam" = "Xyes"; then
 	AC_CHECK_DECLS([PAM_ESTABLISH_CRED,
 	                PAM_DELETE_CRED,
 	                PAM_NEW_AUTHTOK_REQD,
 	                PAM_DATA_SILENT],
-	               [], [], [#include <security/pam_appl.h>])
+	               [], [], [[#include <security/pam_appl.h>]])


 	save_libs=$LIBS
 	LIBS="$LIBS $LIBPAM"
 	# We do not use AC_CHECK_FUNCS to avoid duplicated definition with
 	# Linux PAM.
-	AC_CHECK_FUNC(pam_fail_delay, [AC_DEFINE(HAS_PAM_FAIL_DELAY, 1, [Define to 1 if you have the declaration of 'pam_fail_delay'])])
+	AC_CHECK_FUNC([pam_fail_delay], [AC_DEFINE([HAS_PAM_FAIL_DELAY], [1], [Define to 1 if you have the declaration of 'pam_fail_delay'])])
 	LIBS=$save_libs

-	AC_DEFINE(USE_PAM, 1, [Define to support Pluggable Authentication Modules])
-	AC_DEFINE_UNQUOTED(SHADOW_PAM_CONVERSATION, [$pam_conv_function],[PAM conversation to use])
-	AM_CONDITIONAL(USE_PAM, [true])
+	AC_DEFINE([USE_PAM], [1], [Define to support Pluggable Authentication Modules])
+	AC_DEFINE_UNQUOTED([SHADOW_PAM_CONVERSATION], [$pam_conv_function],[PAM conversation to use])

-	AC_MSG_CHECKING(use login and su access checking if PAM not used)
-	AC_MSG_RESULT(no)
+	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)
+	AC_DEFINE([SU_ACCESS], [1], [Define to support /etc/suauth su access control.])
+	AC_MSG_CHECKING([use login and su access checking if PAM not used])
+	AC_MSG_RESULT([yes])
 fi
+AM_CONDITIONAL([USE_PAM], [test "X$with_libpam" = "Xyes"])

 if test "$enable_acct_tools_setuid" != "no"; then
 	if test "$with_libpam" != "yes"; then
-		if test "$enable_acct_tools_setuid" = "yes"; then
-			AC_MSG_ERROR(PAM support is required for --enable-account-tools-setuid)
+		if test "X$enable_acct_tools_setuid" = "Xyes"; 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 "$enable_acct_tools_setuid" = "yes"; then
-		AC_DEFINE(ACCT_TOOLS_SETUID,
-		          1,
+	if test "X$enable_acct_tools_setuid" = "Xyes"; 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$enable_acct_tools_setuid" = "xyes")
+AM_CONDITIONAL([ACCT_TOOLS_SETUID], [test "x$enable_acct_tools_setuid" = "xyes"])


-AC_ARG_WITH(fcaps,
+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")
+AM_CONDITIONAL([FCAPS], [test "x$with_fcaps" = "xyes"])

 if test "x$with_fcaps" = "xyes"; then
-	AC_CHECK_PROGS(capcmd, "setcap")
+	AC_CHECK_PROGS([capcmd], ["setcap"])
 	if test "x$capcmd" = "x" ; then
 		AC_MSG_ERROR([setcap command not available])
 	fi
 fi

-AC_SUBST(LIBSKEY)
-AC_SUBST(LIBMD)
-if test "$with_skey" = "yes"; then
-	AC_CHECK_LIB(md, MD5Init, [LIBMD=-lmd])
-	AC_CHECK_LIB(skey, skeychallenge, [LIBSKEY=-lskey],
-		[AC_MSG_ERROR([liskey missing. You can download S/Key source code from http://rsync1.it.gentoo.org/gentoo/distfiles/skey-1.1.5.tar.bz2])])
-	AC_DEFINE(SKEY, 1, [Define to support S/Key logins.])
+AC_SUBST([LIBSKEY])
+AC_SUBST([LIBMD])
+if test "X$with_skey" = "Xyes"; 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])],[])
+	]])],[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_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, ["$SHELL"], [The default shell.])
+AC_DEFINE_UNQUOTED([SHELL], ["$SHELL"], [The default shell.])

 AM_GNU_GETTEXT_VERSION([0.19])
 AM_GNU_GETTEXT([external], [need-ngettext])
-AM_CONDITIONAL(USE_NLS, test "x$USE_NLS" = "xyes")
+AM_CONDITIONAL([USE_NLS], [test "x$USE_NLS" = "xyes"])

 AC_CONFIG_FILES([
 	Makefile
@@ -737,7 +689,6 @@ AC_CONFIG_FILES([
 	libsubid/Makefile
 	libsubid/subid.h
 	src/Makefile
-	contrib/Makefile
 	etc/Makefile
 	etc/pam.d/Makefile
 	etc/shadow-maint/Makefile
@@ -745,30 +696,28 @@ AC_CONFIG_FILES([
 ])
 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
+AC_MSG_NOTICE([shadow ${PACKAGE_VERSION} has been configured with the following features:
+
+	auditing support:		$with_audit
+	PAM support:			$with_libpam
+	suid account management tools:	$enable_acct_tools_setuid
+	SELinux support:		$with_selinux
+	BtrFS support:			$with_btrfs
+	ACL support:			$with_acl
+	Extended Attributes support:	$with_attr
+	tcb support (incomplete):	$with_tcb
+	shadow group support:		$enable_shadowgrp
+	S/Key support:			$with_skey
+	SHA passwords encryption:	$with_sha_crypt
+	bcrypt passwords encryption:	$with_bcrypt
+	yescrypt passwords encryption:	$with_yescrypt
+	nscd support:			$with_nscd
+	sssd support:			$with_sssd
+	subordinate IDs support:	$enable_subids
+	enable lastlog:			$enable_lastlog
+	enable logind:			$enable_logind
+	use file caps:			$with_fcaps
+	install su:			$with_su
+	enabled vendor dir:             $enable_vendordir
+
+])
--- a/contrib/Makefile.am
+++ b/contrib/Makefile.am
@@ -1,4 +0,0 @@
-# This is a dummy Makefile.am to get automake work flawlessly,
-# and also cooperate to make a distribution for `make dist'
-
-EXTRA_DIST = README adduser.c adduser.sh adduser2.sh
--- a/contrib/Makefile.in
+++ b/contrib/Makefile.in
@@ -1,507 +0,0 @@
-# Makefile.in generated by automake 1.16.5 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2021 Free Software Foundation, Inc.
-
-# This Makefile.in is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
-# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-# PARTICULAR PURPOSE.
-
-@SET_MAKE@
-
-# This is a dummy Makefile.am to get automake work flawlessly,
-# and also cooperate to make a distribution for `make dist'
-VPATH = @srcdir@
-am__is_gnu_make = { \
-  if test -z '$(MAKELEVEL)'; then \
-    false; \
-  elif test -n '$(MAKE_HOST)'; then \
-    true; \
-  elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
-    true; \
-  else \
-    false; \
-  fi; \
-}
-am__make_running_with_option = \
-  case $${target_option-} in \
-      ?) ;; \
-      *) echo "am__make_running_with_option: internal error: invalid" \
-              "target option '$${target_option-}' specified" >&2; \
-         exit 1;; \
-  esac; \
-  has_opt=no; \
-  sane_makeflags=$$MAKEFLAGS; \
-  if $(am__is_gnu_make); then \
-    sane_makeflags=$$MFLAGS; \
-  else \
-    case $$MAKEFLAGS in \
-      *\\[\ \	]*) \
-        bs=\\; \
-        sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
-          | sed "s/$$bs$$bs[$$bs $$bs	]*//g"`;; \
-    esac; \
-  fi; \
-  skip_next=no; \
-  strip_trailopt () \
-  { \
-    flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
-  }; \
-  for flg in $$sane_makeflags; do \
-    test $$skip_next = yes && { skip_next=no; continue; }; \
-    case $$flg in \
-      *=*|--*) continue;; \
-        -*I) strip_trailopt 'I'; skip_next=yes;; \
-      -*I?*) strip_trailopt 'I';; \
-        -*O) strip_trailopt 'O'; skip_next=yes;; \
-      -*O?*) strip_trailopt 'O';; \
-        -*l) strip_trailopt 'l'; skip_next=yes;; \
-      -*l?*) strip_trailopt 'l';; \
-      -[dEDm]) skip_next=yes;; \
-      -[JT]) skip_next=yes;; \
-    esac; \
-    case $$flg in \
-      *$$target_option*) has_opt=yes; break;; \
-    esac; \
-  done; \
-  test $$has_opt = yes
-am__make_dryrun = (target_option=n; $(am__make_running_with_option))
-am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
-pkgdatadir = $(datadir)/@PACKAGE@
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-.NOEXPORT:
--- a/contrib/README
+++ b/contrib/README
@@ -1,7 +0,0 @@
-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
--- a/contrib/adduser.c
+++ b/contrib/adduser.c
@@ -1,502 +0,0 @@
-/****
-** 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>
-
-#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] == '/')
-	    sprintf (dir+strlen(dir), "%s", 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))
-	sprintf (shell, "%s", DEFAULT_SHELL);
-      else
-	{
-	  char *sh;
-	  int ok = 0;
-#ifdef HAVE_GETUSERSHELL
-	  setusershell ();
-	  while ((sh = getusershell ()) != NULL)
-	    if (!strcmp (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");
-		  sprintf (shell, "%s", 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;
-    }
-  *buf = '\0';
-
-  if (bad)
-    {
-      printf ("\nString contained banned character. Please stick to alphanumerics.\n");
-      *bstart = '\0';
-    }
-}
-
--- a/contrib/adduser.sh
+++ b/contrib/adduser.sh
@@ -1,90 +0,0 @@
-#!/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 $LOGIN
-echo "Done..."
--- a/contrib/adduser2.sh
+++ b/contrib/adduser2.sh
@@ -1,743 +0,0 @@
-#!/bin/bash
-#
-#  adduser			Interactive user adding program.
-#
-#  Copyright (C) 1996		Petri Mattila, Prihateam Networks
-#				petri@prihateam.fi
-#	
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; either version 2, or (at your option)
-#  any later version.
-#
-# Changes:
-#	220496	v0.01	Initial version
-#	230496	v0.02	More checks, embolden summary
-#	240496		Even more checks
-#	250496 		Help with ?
-#	040596	v0.03	Cleanups
-#	050596	v0.04	Bug fixes, expire date checks
-#	070596	v0.05	Iso-latin-1 names
-#
-
-## Defaults
-
-# default groups
-def_group="users"
-def_other_groups=""
-
-# default home directory
-def_home_dir=/home/users
-
-# default shell
-def_shell=/bin/tcsh
-
-# Default expiration date (mm/dd/yy)
-def_expire=""
-
-# default dates
-def_pwd_min=0
-def_pwd_max=90
-def_pwd_warn=14
-def_pwd_iact=14
-
-
-# possible UIDs
-uid_low=1000
-uid_high=64000
-
-# skel directory
-skel=/etc/skel
-
-# default mode for home directory
-def_mode=711
-
-# Regex, that the login name must meet, only ANSI characters
-login_regex='^[0-9a-zA-Z_-]*$'
-
-# 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 "$TERM" in
-   vt*|ansi*|con*|xterm*|linux*)
-	S='[1m'	# start embolden
-	E='[m'	# end embolden
-	;;
-   *)	
-	S=''
-	E=''
-	;;
-esac
-
-
-## Functions
-
-check_root() {
-	if test "$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.
--- a/doc/HOWTO
+++ b/doc/HOWTO
@@ -346,7 +346,7 @@
  return value points to static data whose content is overwritten by
  each call.

-  Warning: The key space consists of 2**56 equal 7.2e16 possible values.
+  Warning: the key space consists of 2**56 equal 7.2e16 possible values.
  Exhaustive searches of this key space are possible using massively
  parallel computers.  Software, such as crack(1), is available which
  will search the portion of this key space that is generally used by
@@ -471,12 +471,12 @@

  The Shadow Suite contains replacement programs for:

-  su, login, passwd, newgrp, chfn, chsh, and id
+  su, login, passwd, newgrp, chfn, chsh

  The package also contains the new programs:

  chage, newusers, dpasswd, gpasswd, useradd, userdel, usermod,
-  groupadd, groupdel, groupmod, groups, pwck, grpck, lastlog, pwconv,
+  groupadd, groupdel, groupmod, pwck, grpck, lastlog, pwconv,
  and pwunconv

  Additionally, the library: libshadow.a is included for writing and/or
@@ -586,8 +586,6 @@

  ·  /usr/bin/chsh

-  ·  /usr/bin/id
-
  The BETA package has a save target in the Makefile, but it's commented
  out because different distributions place the programs in different
  places.
@@ -637,8 +635,6 @@

  ·  /usr/man/man1/chsh.1.gz

-  ·  /usr/man/man1/id.1.gz
-
  ·  /usr/man/man1/login.1.gz

  ·  /usr/man/man1/passwd.1.gz
@@ -1000,7 +996,7 @@
  sudo for the shadow suite, is available as at:
  <ftp://sunsite.unc.edu/pub/Linux/system/Admin/sudo-1.2-shadow.tgz>

-  Warning: When you install sudo your /etc/sudoers file will be replaced
+  Warning: when you install sudo your /etc/sudoers file will be replaced
  with a default one, so you need to make a backup of it if you have
  added anything to the default one.  (you could also edit the Makefile
  and remove the line that copies the default file to /etc).
@@ -1377,7 +1373,7 @@
  users or changing the group password, the /etc/gshadow file will be
  changed.

-  The programs groups, groupadd, groupmod, and groupdel are provided as
+  The programs groupadd, groupmod, and groupdel are provided as
  part of the Shadow Suite to modify groups.

  The format of the /etc/group file is as follows:
@@ -1755,7 +1751,7 @@
      }
  #ifdef HAS_SHADOW
      if ((pw->pw_passwd && pw->pw_passwd[0] == '@'
-           && pw_auth (pw->pw_passwd+1, pw->pw_name, PW_LOGIN, NULL))
+           && pw_auth(pw->pw_passwd+1, pw->pw_name))
          || !valid (passwd, pw)) {
          return (UPAP_AUTHNAK);
      }
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -133,6 +133,7 @@ DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AM_DISTCHECK_CONFIGURE_FLAGS = @AM_DISTCHECK_CONFIGURE_FLAGS@
 AR = @AR@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
@@ -204,7 +205,6 @@ LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
-LIYESCRYPT = @LIYESCRYPT@
 LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
@@ -251,8 +251,6 @@ XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
 XMLCATALOG = @XMLCATALOG@
 XML_CATALOG_FILE = @XML_CATALOG_FILE@
 XSLTPROC = @XSLTPROC@
-YACC = @YACC@
-YFLAGS = @YFLAGS@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
--- a/etc/Makefile.in
+++ b/etc/Makefile.in
@@ -222,6 +222,7 @@ am__relativize = \
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AM_DISTCHECK_CONFIGURE_FLAGS = @AM_DISTCHECK_CONFIGURE_FLAGS@
 AR = @AR@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
@@ -293,7 +294,6 @@ LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
-LIYESCRYPT = @LIYESCRYPT@
 LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
@@ -340,8 +340,6 @@ XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
 XMLCATALOG = @XMLCATALOG@
 XML_CATALOG_FILE = @XML_CATALOG_FILE@
 XSLTPROC = @XSLTPROC@
-YACC = @YACC@
-YFLAGS = @YFLAGS@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
--- a/etc/login.defs
+++ b/etc/login.defs
@@ -6,7 +6,7 @@

 #
 # 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.
+# Note: when PAM is used, some modules may enforce a minimum delay (e.g.
 #       pam_unix(8) enforces a 2s delay)
 #
 FAIL_DELAY		3
@@ -276,7 +276,7 @@ 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".
+# Only used for DES encryption algorithm.
 #
 #PASS_MAX_LEN		8

@@ -308,7 +308,7 @@ CHFN_RESTRICT		rwh
 # 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
+# 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.
@@ -326,7 +326,7 @@ CHFN_RESTRICT		rwh
 # 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
+# Note: if you use PAM, it is recommended to use a value consistent with
 # the PAM modules configuration.
 #
 #ENCRYPT_METHOD DES
@@ -467,7 +467,7 @@ PREVENT_NO_AUTH superuser
 # 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
+# Note: it is recommended to check hmac(3) to see the possible algorithms
 # that are available in your system.
 #
 #HMAC_CRYPTO_ALGO SHA512
--- a/etc/pam.d/Makefile.am
+++ b/etc/pam.d/Makefile.am
@@ -11,7 +11,6 @@ pamd_files = \
 	passwd

 pamd_acct_tools_files = \
-	chage \
 	chgpasswd \
 	groupadd \
 	groupdel \
--- a/etc/pam.d/Makefile.in
+++ b/etc/pam.d/Makefile.in
@@ -165,6 +165,7 @@ DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AM_DISTCHECK_CONFIGURE_FLAGS = @AM_DISTCHECK_CONFIGURE_FLAGS@
 AR = @AR@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
@@ -236,7 +237,6 @@ LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
-LIYESCRYPT = @LIYESCRYPT@
 LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
@@ -283,8 +283,6 @@ XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
 XMLCATALOG = @XMLCATALOG@
 XML_CATALOG_FILE = @XML_CATALOG_FILE@
 XSLTPROC = @XSLTPROC@
-YACC = @YACC@
-YFLAGS = @YFLAGS@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
@@ -342,7 +340,6 @@ top_srcdir = @top_srcdir@
 pamd_files = chpasswd chfn chsh groupmems login newusers passwd \
 	$(am__append_2)
 pamd_acct_tools_files = \
-	chage \
 	chgpasswd \
 	groupadd \
 	groupdel \
--- a/etc/pam.d/chage
+++ b/etc/pam.d/chage
@@ -1,4 +0,0 @@
-#%PAM-1.0
-auth		sufficient	pam_rootok.so
-account		required	pam_permit.so
-password	include		system-auth
--- a/etc/shadow-maint/Makefile.in
+++ b/etc/shadow-maint/Makefile.in
@@ -130,6 +130,7 @@ DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
 AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+AM_DISTCHECK_CONFIGURE_FLAGS = @AM_DISTCHECK_CONFIGURE_FLAGS@
 AR = @AR@
 AUTOCONF = @AUTOCONF@
 AUTOHEADER = @AUTOHEADER@
@@ -201,7 +202,6 @@ LIBSYSTEMD = @LIBSYSTEMD@
 LIBTCB = @LIBTCB@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
-LIYESCRYPT = @LIYESCRYPT@
 LN_S = @LN_S@
 LTLIBICONV = @LTLIBICONV@
 LTLIBINTL = @LTLIBINTL@
@@ -248,8 +248,6 @@ XGETTEXT_EXTRA_OPTIONS = @XGETTEXT_EXTRA_OPTIONS@
 XMLCATALOG = @XMLCATALOG@
 XML_CATALOG_FILE = @XML_CATALOG_FILE@
 XSLTPROC = @XSLTPROC@
-YACC = @YACC@
-YFLAGS = @YFLAGS@
 abs_builddir = @abs_builddir@
 abs_srcdir = @abs_srcdir@
 abs_top_builddir = @abs_top_builddir@
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -29,16 +29,24 @@ libshadow_la_SOURCES = \
 	age.c \
 	agetpass.c \
 	agetpass.h \
-	alloc.c \
-	alloc.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 \
 	atoi/a2i.c \
 	atoi/a2i.h \
-	atoi/str2i.c \
-	atoi/str2i.h \
-	atoi/strtoi.c \
-	atoi/strtoi.h \
-	atoi/strtou_noneg.c \
-	atoi/strtou_noneg.h \
+	atoi/getnum.c \
+	atoi/getnum.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 \
@@ -47,6 +55,8 @@ libshadow_la_SOURCES = \
 	cast.h \
 	chkname.c \
 	chkname.h \
+	chkhash.c \
+	chkhash.h \
 	chowndir.c \
 	chowntty.c \
 	cleanup.c \
@@ -60,22 +70,28 @@ libshadow_la_SOURCES = \
 	defines.h \
 	encrypt.c \
 	env.c \
+	exit_if_null.c \
+	exit_if_null.h \
 	exitcodes.h \
 	faillog.h \
 	failure.c \
 	failure.h \
 	fd.c \
 	fields.c \
+	fields.h \
 	find_new_gid.c \
 	find_new_uid.c \
 	find_new_sub_gids.c \
 	find_new_sub_uids.c \
-	fputsx.c \
-	get_gid.c \
+	fs/mkstemp/fmkomstemp.c \
+	fs/mkstemp/fmkomstemp.h \
+	fs/mkstemp/mkomstemp.c \
+	fs/mkstemp/mkomstemp.h \
+	fs/readlink/areadlink.c \
+	fs/readlink/areadlink.h \
+	fs/readlink/readlinknul.c \
+	fs/readlink/readlinknul.h \
 	get_pid.c \
-	get_uid.c \
-	getdate.h \
-	getdate.y \
 	getdef.c \
 	getdef.h \
 	getgr_nam_gid.c \
@@ -84,7 +100,6 @@ libshadow_la_SOURCES = \
 	groupio.c \
 	groupmem.c \
 	groupio.h \
-	gshadow.c \
 	hushed.c \
 	idmapping.h \
 	idmapping.c \
@@ -94,10 +109,7 @@ libshadow_la_SOURCES = \
 	lockpw.c \
 	loginprompt.c \
 	mail.c \
-	memzero.c \
-	memzero.h \
 	motd.c \
-	must_be.h \
 	myname.c \
 	nss.c \
 	nscd.c \
@@ -123,16 +135,46 @@ libshadow_la_SOURCES = \
 	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 \
+	sgroupio.h \
+	shadow/group/sgetgrent.c \
+	shadow/group/sgetgrent.h \
+	shadow/grp/agetgroups.c \
+	shadow/grp/agetgroups.h \
+	shadow/gshadow/endsgent.c \
+	shadow/gshadow/endsgent.h \
+	shadow/gshadow/fgetsgent.c \
+	shadow/gshadow/fgetsgent.h \
+	shadow/gshadow/getsgent.c \
+	shadow/gshadow/getsgent.h \
+	shadow/gshadow/getsgnam.c \
+	shadow/gshadow/getsgnam.h \
+	shadow/gshadow/gshadow.c \
+	shadow/gshadow/gshadow.h \
+	shadow/gshadow/putsgent.c \
+	shadow/gshadow/putsgent.h \
+	shadow/gshadow/setsgent.c \
+	shadow/gshadow/setsgent.h \
+	shadow/gshadow/sgetsgent.c \
+	shadow/gshadow/sgetsgent.h \
+	shadow/gshadow/sgrp.c \
+	shadow/gshadow/sgrp.h \
+	shadow/passwd/sgetpwent.c \
+	shadow/passwd/sgetpwent.h \
+	shadow/shadow/sgetspent.c \
+	shadow/shadow/sgetspent.h \
 	shadowio.c \
 	shadowio.h \
 	shadowlog.c \
@@ -144,18 +186,74 @@ libshadow_la_SOURCES = \
 	spawn.c \
 	sssd.c \
 	sssd.h \
-	string/sprintf.c \
-	string/sprintf.h \
-	string/stpecpy.c \
-	string/stpecpy.h \
-	string/stpeprintf.c \
-	string/stpeprintf.h \
+	string/ctype/strchrisascii/strchriscntrl.c \
+	string/ctype/strchrisascii/strchriscntrl.h \
+	string/ctype/strisascii/strisdigit.c \
+	string/ctype/strisascii/strisdigit.h \
+	string/ctype/strisascii/strisprint.c \
+	string/ctype/strisascii/strisprint.h \
+	string/ctype/strtoascii/strtolower.c \
+	string/ctype/strtoascii/strtolower.h \
+	string/memset/memzero.c \
+	string/memset/memzero.h \
+	string/sprintf/aprintf.c \
+	string/sprintf/aprintf.h \
+	string/sprintf/snprintf.c \
+	string/sprintf/snprintf.h \
+	string/sprintf/stpeprintf.c \
+	string/sprintf/stpeprintf.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/strcaseprefix.c \
+	string/strcmp/strcaseprefix.h \
+	string/strcmp/streq.c \
+	string/strcmp/streq.h \
+	string/strcmp/strneq.c \
+	string/strcmp/strneq.h \
+	string/strcmp/strprefix.c \
+	string/strcmp/strprefix.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/strdup.c \
+	string/strdup/strdup.h \
+	string/strdup/strndupa.c \
+	string/strdup/strndupa.h \
+	string/strdup/strndup.c \
+	string/strdup/strndup.h \
+	string/strerrno.c \
+	string/strerrno.h \
 	string/strftime.c \
 	string/strftime.h \
-	string/strncpy.h \
-	string/strtcpy.c \
-	string/strtcpy.h \
-	string/zustr2stp.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 \
+	string/strtok/astrsep2ls.c \
+	string/strtok/astrsep2ls.h \
+	string/strtok/strsep2arr.c \
+	string/strtok/strsep2arr.h \
+	string/strtok/strsep2ls.c \
+	string/strtok/strsep2ls.h \
 	strtoday.c \
 	sub.c \
 	subordinateio.h \
@@ -164,6 +262,7 @@ libshadow_la_SOURCES = \
 	time/day_to_str.c \
 	time/day_to_str.h \
 	ttytype.c \
+	typetraits.h \
 	tz.c \
 	ulimit.c \
 	user_busy.c \
@@ -210,5 +309,4 @@ endif

 EXTRA_DIST = \
 	.indent.pro \
-	gshadow_.h \
 	xgetXXbyYY.c
--- a/lib/Makefile.in
+++ b/lib/Makefile.in
--- a/lib/addgrps.c
+++ b/lib/addgrps.c
@@ -1,114 +1,88 @@
-/*
- * 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-License-Identifier: BSD-3-Clause
- */
+// 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 (HAVE_SETGROUPS) && ! defined (USE_PAM)
+#include "config.h"
+
+#if !defined(USE_PAM)

 #include "prototypes.h"
 #include "defines.h"

-#include <stdio.h>
-#include <grp.h>
 #include <errno.h>
+#include <grp.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>

-#include "alloc.h"
+#include "alloc/reallocf.h"
+#include "search/l/lsearch.h"
+#include "shadow/grp/agetgroups.h"
 #include "shadowlog.h"
+#include "string/strchr/strchrscnt.h"
+#include "string/strcmp/streq.h"
+#include "string/strerrno.h"

-#ident "$Id$"

-#define SEP ",:"
 /*
 * Add groups with names from LIST (separated by commas or colons)
 * to the supplementary group set.  Silently ignore groups which are
- * already there.  Warning: uses strtok().
+ * already there.
 */
-int add_groups (const char *list)
+int
+add_groups(const char *list)
 {
-	GETGROUPS_T *grouplist;
-	size_t i;
-	int ngroups;
-	bool added;
-	char *token;
-	char buf[1024];
-	int ret;
+	char    *dup;
 	FILE *shadow_logfd = log_get_logfd();
+	gid_t   *gids;
+	size_t  n;

-	if (strlen (list) >= sizeof (buf)) {
-		errno = EINVAL;
+	gids = agetgroups(&n);
+	if (gids == NULL)
 		return -1;
-	}
-	strcpy (buf, list);

-	i = 16;
-	for (;;) {
-		grouplist = MALLOC(i, GETGROUPS_T);
-		if (NULL == grouplist) {
-			return -1;
-		}
-		ngroups = getgroups (i, grouplist);
-		if (   (   (-1 == ngroups)
-		        && (EINVAL != errno))
-		    || (i > (size_t)ngroups)) {
-			/* Unexpected failure of getgroups or successful
-			 * reception of the groups */
-			break;
-		}
-		/* not enough room, so try allocating a larger buffer */
-		free (grouplist);
-		i *= 2;
-	}
-	if (ngroups < 0) {
-		free (grouplist);
+	gids = reallocf_T(gids, n + strchrscnt(list, ",:") + 1, gid_t);
+	if (gids == NULL)
 		return -1;
+
+	dup = strdup(list);
+	if (dup == NULL)
+		goto free_gids;
+
+	if (!streq(dup, "")) {
+		char  *g, *p;
+
+		p = dup;
+		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(gid_t, &grp->gr_gid, gids, &n);
+		}
+	}
+	free(dup);
+
+	if (setgroups(n, gids) == -1) {
+		fprintf(shadow_logfd, "setgroups: %s\n", strerrno());
+		goto free_gids;
 	}

-	added = false;
-	for (token = strtok (buf, SEP); NULL != token; token = strtok (NULL, SEP)) {
-		struct group *grp;
-
-		grp = getgrnam (token); /* local, no need for xgetgrnam */
-		if (NULL == grp) {
-			fprintf (shadow_logfd, _("Warning: unknown group %s\n"),
-				 token);
-			continue;
-		}
-
-		for (i = 0; i < (size_t)ngroups && grouplist[i] != grp->gr_gid; i++);
-
-		if (i < (size_t)ngroups) {
-			continue;
-		}
-
-		if (ngroups >= sysconf (_SC_NGROUPS_MAX)) {
-			fputs (_("Warning: too many groups\n"), shadow_logfd);
-			break;
-		}
-		grouplist = REALLOCF(grouplist, (size_t) ngroups + 1, GETGROUPS_T);
-		if (grouplist == NULL) {
-			return -1;
-		}
-		grouplist[ngroups] = grp->gr_gid;
-		ngroups++;
-		added = true;
-	}
-
-	if (added) {
-		ret = setgroups (ngroups, grouplist);
-		free (grouplist);
-		return ret;
-	}
-
-	free (grouplist);
+	free(gids);
 	return 0;
-}
-#else				/* HAVE_SETGROUPS && !USE_PAM */
-extern int ISO_C_forbids_an_empty_translation_unit;
-#endif				/* HAVE_SETGROUPS && !USE_PAM */

+free_gids:
+	free(gids);
+	return -1;
+}
+#else				/* !USE_PAM */
+extern int ISO_C_forbids_an_empty_translation_unit;
+#endif				/* !USE_PAM */
--- a/lib/adds.c
+++ b/lib/adds.c
@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSD-3-Clause


-#include <config.h>
+#include "config.h"

 #include "adds.h"

@@ -11,5 +11,3 @@

 extern inline long addsl2(long a, long b);
 extern inline long addslN(size_t n, long addend[n]);
-
-extern inline int cmpl(const void *p1, const void *p2);
--- a/lib/adds.h
+++ b/lib/adds.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
 // SPDX-License-Identifier: BSD-3-Clause


@@ -6,13 +6,13 @@
 #define SHADOW_INCLUDE_LIB_ADDS_H_


-#include <config.h>
+#include "config.h"

 #include <errno.h>
 #include <limits.h>
 #include <stddef.h>
-#include <stdlib.h>

+#include "search/sort/qsort.h"
 #include "sizeof.h"


@@ -20,15 +20,13 @@
 ({                                                                            \
 	long  addend_[] = {a, b, __VA_ARGS__};                                \
                                                                              \
-	addslN(NITEMS(addend_), addend_);                                     \
+	addslN(countof(addend_), addend_);                                    \
 })


 inline long addsl2(long a, long b);
 inline long addslN(size_t n, long addend[n]);

-inline int cmpl(const void *p1, const void *p2);
-

 inline long
 addsl2(long a, long b)
@@ -57,7 +55,7 @@ addslN(size_t n, long addend[n])

 	e = errno;
 	while (n > 1) {
-		qsort(addend, n, sizeof(addend[0]), cmpl);
+		QSORT(long, addend, n);

 		errno = 0;
 		addend[0] = addsl2(addend[0], addend[--n]);
@@ -69,18 +67,4 @@ addslN(size_t n, long addend[n])
 }


-inline int
-cmpl(const void *p1, const void *p2)
-{
-	const long  *l1 = p1;
-	const long  *l2 = p2;
-
-	if (*l1 < *l2)
-		return -1;
-	if (*l1 > *l2)
-		return +1;
-	return 0;
-}
-
-
 #endif  // include guard
--- a/lib/age.c
+++ b/lib/age.c
@@ -7,7 +7,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #include <sys/types.h>
 #include <stdio.h>
@@ -20,6 +20,7 @@
 #include "defines.h"
 #include "exitcodes.h"
 #include "prototypes.h"
+#include "shadow/gshadow/endsgent.h"


 #ident "$Id$"
@@ -106,7 +107,7 @@ int expire (const struct passwd *pw, /*@null@*/const struct spwd *sp)
 		 * passwd to work just like it would had they executed
 		 * it from the command line while logged in.
 		 */
-#if defined(HAVE_INITGROUPS) && ! defined(USE_PAM)
+#if !defined(USE_PAM)
 		if (setup_uid_gid (pw, false) != 0)
 #else
 		if (setup_uid_gid (pw) != 0)
--- a/lib/agetpass.c
+++ b/lib/agetpass.c
@@ -5,7 +5,7 @@
 */


-#include <config.h>
+#include "config.h"

 #include "agetpass.h"

@@ -16,7 +16,7 @@

 #ident "$Id$"

-#include "alloc.h"
+#include "alloc/malloc.h"

 #if WITH_LIBBSD == 0
 #include "freezero.h"
@@ -106,7 +106,7 @@ agetpass_internal(const char *prompt, int flags)
 	 * 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);
+	pass = malloc_T(PASS_MAX + 2, char);
 	if (pass == NULL)
 		return NULL;

@@ -135,7 +135,7 @@ agetpass(const char *prompt)
 char *
 agetpass_stdin()
 {
-	return agetpass_internal(NULL, RPP_STDIN);
+	return agetpass_internal("", RPP_STDIN);
 }

 void
--- a/lib/agetpass.h
+++ b/lib/agetpass.h
@@ -8,7 +8,7 @@
 #define SHADOW_INCLUDE_LIB_AGETPASS_H_


-#include <config.h>
+#include "config.h"

 #include "attr.h"
 #include "defines.h"
--- a/lib/alloc.c
+++ b/lib/alloc.c
@@ -1,73 +0,0 @@
-/*
- * 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       , Alejandro Colomar <alx@kernel.org>
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-/* Replacements for malloc and strdup with error checking.  Too trivial
-   to be worth copyrighting :-).  I did that because a lot of code used
-   malloc and strdup without checking for NULL pointer, and I like some
-   message better than a core dump...  --marekm
-
-   Yeh, but.  Remember that bailing out might leave the system in some
-   bizarre state.  You really want to put in error checking, then add
-   some back-out failure recovery code. -- jfh */
-
-#include <config.h>
-
-#ident "$Id$"
-
-#include "alloc.h"
-
-#include <errno.h>
-#include <stddef.h>
-#include <stdio.h>
-
-#include "defines.h"
-#include "prototypes.h"
-#include "shadowlog.h"
-
-
-extern inline void *xmalloc(size_t size);
-extern inline void *xmallocarray(size_t nmemb, size_t size);
-extern inline void *mallocarray(size_t nmemb, size_t size);
-extern inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
-extern inline char *xstrdup(const char *str);
-
-
-void *
-xcalloc(size_t nmemb, size_t size)
-{
-	void  *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);
-}
-
-
-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);
-}
--- a/lib/alloc.h
+++ b/lib/alloc.h
@@ -1,101 +0,0 @@
-// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
-// SPDX-License-Identifier: BSD-3-Clause
-
-
-#ifndef SHADOW_INCLUDE_LIB_MALLOC_H_
-#define SHADOW_INCLUDE_LIB_MALLOC_H_
-
-
-#include <config.h>
-
-#include <assert.h>
-#include <errno.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-
-#include "attr.h"
-#include "defines.h"
-
-
-#define CALLOC(n, type)   ((type *) calloc(n, sizeof(type)))
-#define XCALLOC(n, type)  ((type *) xcalloc(n, sizeof(type)))
-#define MALLOC(n, type)   ((type *) mallocarray(n, sizeof(type)))
-#define XMALLOC(n, type)  ((type *) xmallocarray(n, sizeof(type)))
-
-#define REALLOC(ptr, n, type)                                                 \
-(                                                                             \
-	_Generic(ptr, type *:  (type *) reallocarray(ptr, n, sizeof(type)))   \
-)
-
-#define REALLOCF(ptr, n, type)                                                \
-(                                                                             \
-	_Generic(ptr, type *:  (type *) reallocarrayf(ptr, n, sizeof(type)))  \
-)
-
-#define XREALLOC(ptr, n, type)                                                \
-(                                                                             \
-	_Generic(ptr, type *:  (type *) xreallocarray(ptr, n, sizeof(type)))  \
-)
-
-
-ATTR_MALLOC(free)
-inline void *xmalloc(size_t size);
-ATTR_MALLOC(free)
-inline void *xmallocarray(size_t nmemb, size_t size);
-ATTR_MALLOC(free)
-inline void *mallocarray(size_t nmemb, size_t size);
-ATTR_MALLOC(free)
-inline void *reallocarrayf(void *p, size_t nmemb, size_t size);
-ATTR_MALLOC(free)
-inline char *xstrdup(const char *str);
-
-ATTR_MALLOC(free)
-void *xcalloc(size_t nmemb, size_t size);
-ATTR_MALLOC(free)
-void *xreallocarray(void *p, size_t nmemb, size_t size);
-
-
-inline void *
-xmalloc(size_t size)
-{
-	return xmallocarray(1, size);
-}
-
-
-inline void *
-xmallocarray(size_t nmemb, size_t size)
-{
-	return xreallocarray(NULL, nmemb, size);
-}
-
-
-inline void *
-mallocarray(size_t nmemb, size_t size)
-{
-	return reallocarray(NULL, nmemb, size);
-}
-
-
-inline void *
-reallocarrayf(void *p, size_t nmemb, size_t size)
-{
-	void  *q;
-
-	q = reallocarray(p, nmemb, size);
-
-	/* realloc(p, 0) is equivalent to free(p);  avoid double free.  */
-	if (q == NULL && nmemb != 0 && size != 0)
-		free(p);
-	return q;
-}
-
-
-inline char *
-xstrdup(const char *str)
-{
-	return strcpy(XMALLOC(strlen(str) + 1, char), str);
-}
-
-
-#endif  // include guard
--- a/lib/alloc/calloc.c
+++ b/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"
--- a/lib/alloc/calloc.h
+++ b/lib/alloc/calloc.h
@@ -0,0 +1,29 @@
+// SPDX-FileCopyrightText: 2023-2025, 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>
+
+#include "exit_if_null.h"
+#include "sizeof.h"
+
+
+// calloc_T - calloc type-safe
+#define calloc_T(n, T)   calloc_T_(n, typeas(T))
+#define calloc_T_(n, T)                                               \
+({                                                                    \
+	(T *){calloc(n, sizeof(T))};                                  \
+})
+
+
+// xcalloc_T - exit-on-error calloc type-safe
+#define xcalloc_T(n, T)  exit_if_null(calloc_T(n, T))
+
+
+#endif  // include guard
--- a/lib/alloc/malloc.c
+++ b/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);
--- a/lib/alloc/malloc.h
+++ b/lib/alloc/malloc.h
@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2023-2025, 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"
+#include "exit_if_null.h"
+#include "sizeof.h"
+
+
+// malloc_T - malloc type-safe
+#define malloc_T(n, T)   malloc_T_(n, typeas(T))
+#define malloc_T_(n, T)                                               \
+({                                                                    \
+	(T *){mallocarray(n, sizeof(T))};                             \
+})
+
+
+// xmalloc_T - exit-on-error malloc type-safe
+#define xmalloc_T(n, T)  exit_if_null(malloc_T(n, T))
+
+
+// mallocarray - malloc array
+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
--- a/lib/alloc/realloc.c
+++ b/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"
--- a/lib/alloc/realloc.h
+++ b/lib/alloc/realloc.h
@@ -0,0 +1,32 @@
+// SPDX-FileCopyrightText: 2023-2025, 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>
+
+#include "exit_if_null.h"
+#include "sizeof.h"
+
+
+// realloc_T - realloc type-safe
+#define realloc_T(p, n, T)   realloc_T_(p, n, typeas(T))
+#define realloc_T_(p, n, T)                                           \
+({                                                                    \
+	_Generic(p, T *: (void)0);                                    \
+	(T *){reallocarray_(p, n, sizeof(T))};                        \
+})
+
+#define reallocarray_(p, n, size)  reallocarray(p, (n) ?: 1, (size) ?: 1)
+
+
+// xrealloc_T - exit-on-error realloc type-safe
+#define xrealloc_T(p, n, T)  exit_if_null(realloc_T(p, n, T))
+
+
+#endif  // include guard
--- a/lib/alloc/reallocf.c
+++ b/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);
--- a/lib/alloc/reallocf.h
+++ b/lib/alloc/reallocf.h
@@ -0,0 +1,48 @@
+// SPDX-FileCopyrightText: 2023-2025, 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"
+#include "sizeof.h"
+
+
+// reallocf_T - realloc free-on-error type-safe
+#define reallocf_T(p, n, T)   reallocf_T_(p, n, typeas(T))
+#define reallocf_T_(p, n, T)                                          \
+({                                                                    \
+	_Generic(p, T *: (void)0);                                    \
+	(T *){reallocarrayf_(p, n, sizeof(T))};                       \
+})
+
+#define reallocarrayf_(p, n, size)  reallocarrayf(p, (n) ?: 1, (size) ?: 1)
+
+
+// reallocarrayf - realloc array free-on-error
+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
--- a/lib/atoi/a2i.c
+++ b/lib/atoi/a2i.c
@@ -1,46 +1,7 @@
-// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2023-2025, Alejandro Colomar <alx@kernel.org>
 // SPDX-License-Identifier: BSD-3-Clause


-#include <config.h>
+#include "config.h"

 #include "atoi/a2i.h"
-
-
-extern inline int a2sh_c(short *restrict n, const char *s,
-    const char **restrict endp, int base, short min, short max);
-extern inline int a2si_c(int *restrict n, const char *s,
-    const char **restrict endp, int base, int min, int max);
-extern inline int a2sl_c(long *restrict n, const char *s,
-    const char **restrict endp, int base, long min, long max);
-extern inline int a2sll_c(long long *restrict n, const char *s,
-    const char **restrict endp, int base, long long min, long long max);
-extern inline int a2uh_c(unsigned short *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned short min,
-    unsigned short max);
-extern inline int a2ui_c(unsigned int *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned int min, unsigned int max);
-extern inline int a2ul_c(unsigned long *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned long min, unsigned long max);
-extern inline int a2ull_c(unsigned long long *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned long long min,
-    unsigned long long max);
-
-
-extern inline int a2sh_nc(short *restrict n, char *s,
-    char **restrict endp, int base, short min, short max);
-extern inline int a2si_nc(int *restrict n, char *s,
-    char **restrict endp, int base, int min, int max);
-extern inline int a2sl_nc(long *restrict n, char *s,
-    char **restrict endp, int base, long min, long max);
-extern inline int a2sll_nc(long long *restrict n, char *s,
-    char **restrict endp, int base, long long min, long long max);
-extern inline int a2uh_nc(unsigned short *restrict n, char *s,
-    char **restrict endp, int base, unsigned short min, unsigned short max);
-extern inline int a2ui_nc(unsigned int *restrict n, char *s,
-    char **restrict endp, int base, unsigned int min, unsigned int max);
-extern inline int a2ul_nc(unsigned long *restrict n, char *s,
-    char **restrict endp, int base, unsigned long min, unsigned long max);
-extern inline int a2ull_nc(unsigned long long *restrict n, char *s,
-    char **restrict endp, int base, unsigned long long min,
-    unsigned long long max);
--- a/lib/atoi/a2i.h
+++ b/lib/atoi/a2i.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2023-2025, Alejandro Colomar <alx@kernel.org>
 // SPDX-License-Identifier: BSD-3-Clause


@@ -6,381 +6,64 @@
 #define SHADOW_INCLUDE_LIB_ATOI_A2I_H_


-#include <config.h>
+#include "config.h"

 #include <errno.h>
+#include <stddef.h>

-#include "atoi/strtoi.h"
-#include "atoi/strtou_noneg.h"
-#include "attr.h"
+#include "atoi/strtoi/strtoi.h"
+#include "atoi/strtoi/strtou_noneg.h"
+#include "typetraits.h"


-/*
- * See the manual of these macros in liba2i's documentation:
- * <http://www.alejandro-colomar.es/share/dist/liba2i/git/HEAD/liba2i-HEAD.pdf>
- */
+// a2i - alpha to integer
+#define a2i(T, n, s, endp, base, min, max)                            \
+({                                                                    \
+	T            *n_ = n;                                         \
+	QChar_of(s)  **endp_ = endp;                                  \
+	T            min_ = min;                                      \
+	T            max_ = max;                                      \
+	                                                              \
+	int  status;                                                  \
+	                                                              \
+	*n_ = _Generic((T){0},                                        \
+		short:              strtoi_,                          \
+		int:                strtoi_,                          \
+		long:               strtoi_,                          \
+		long long:          strtoi_,                          \
+		unsigned short:     strtou_noneg,                     \
+		unsigned int:       strtou_noneg,                     \
+		unsigned long:      strtou_noneg,                     \
+		unsigned long long: strtou_noneg                      \
+	)(s, (char **) endp_, base, min_, max_, &status);             \
+	                                                              \
+	if (status != 0)                                              \
+		errno = status;                                       \
+	-!!status;                                                    \
+})


-#define a2i(TYPE, n, s, ...)                                                  \
-(                                                                             \
-	_Generic((void (*)(TYPE, typeof(s))) 0,                               \
-		void (*)(short,              const char *):  a2sh_c,          \
-		void (*)(short,              const void *):  a2sh_c,          \
-		void (*)(short,              char *):        a2sh_nc,         \
-		void (*)(short,              void *):        a2sh_nc,         \
-		void (*)(int,                const char *):  a2si_c,          \
-		void (*)(int,                const void *):  a2si_c,          \
-		void (*)(int,                char *):        a2si_nc,         \
-		void (*)(int,                void *):        a2si_nc,         \
-		void (*)(long,               const char *):  a2sl_c,          \
-		void (*)(long,               const void *):  a2sl_c,          \
-		void (*)(long,               char *):        a2sl_nc,         \
-		void (*)(long,               void *):        a2sl_nc,         \
-		void (*)(long long,          const char *):  a2sll_c,         \
-		void (*)(long long,          const void *):  a2sll_c,         \
-		void (*)(long long,          char *):        a2sll_nc,        \
-		void (*)(long long,          void *):        a2sll_nc,        \
-		void (*)(unsigned short,     const char *):  a2uh_c,          \
-		void (*)(unsigned short,     const void *):  a2uh_c,          \
-		void (*)(unsigned short,     char *):        a2uh_nc,         \
-		void (*)(unsigned short,     void *):        a2uh_nc,         \
-		void (*)(unsigned int,       const char *):  a2ui_c,          \
-		void (*)(unsigned int,       const void *):  a2ui_c,          \
-		void (*)(unsigned int,       char *):        a2ui_nc,         \
-		void (*)(unsigned int,       void *):        a2ui_nc,         \
-		void (*)(unsigned long,      const char *):  a2ul_c,          \
-		void (*)(unsigned long,      const void *):  a2ul_c,          \
-		void (*)(unsigned long,      char *):        a2ul_nc,         \
-		void (*)(unsigned long,      void *):        a2ul_nc,         \
-		void (*)(unsigned long long, const char *):  a2ull_c,         \
-		void (*)(unsigned long long, const void *):  a2ull_c,         \
-		void (*)(unsigned long long, char *):        a2ull_nc,        \
-		void (*)(unsigned long long, void *):        a2ull_nc         \
-	)(n, s, __VA_ARGS__)                                                  \
-)
+#define a2sh(...)   a2i(short, __VA_ARGS__)
+#define a2si(...)   a2i(int, __VA_ARGS__)
+#define a2sl(...)   a2i(long, __VA_ARGS__)
+#define a2sll(...)  a2i(long long, __VA_ARGS__)

+#define a2uh(...)   a2i(unsigned short, __VA_ARGS__)
+#define a2ui(...)   a2i(unsigned int, __VA_ARGS__)
+#define a2ul(...)   a2i(unsigned long, __VA_ARGS__)
+#define a2ull(...)  a2i(unsigned long long, __VA_ARGS__)

-#define a2sh(n, s, ...)                                                       \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2sh_c,                                        \
-		const void *:  a2sh_c,                                        \
-		char *:        a2sh_nc,                                       \
-		void *:        a2sh_nc                                        \
-	)(n, s, __VA_ARGS__)                                                  \
-)
+#define str2i(T, ...)  a2i(T, __VA_ARGS__, NULL, 0, type_min(T), type_max(T))

-#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 str2sh(...)    str2i(short, __VA_ARGS__)
+#define str2si(...)    str2i(int, __VA_ARGS__)
+#define str2sl(...)    str2i(long, __VA_ARGS__)
+#define str2sll(...)   str2i(long long, __VA_ARGS__)

-#define a2sl(n, s, ...)                                                       \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2sl_c,                                        \
-		const void *:  a2sl_c,                                        \
-		char *:        a2sl_nc,                                       \
-		void *:        a2sl_nc                                        \
-	)(n, s, __VA_ARGS__)                                                  \
-)
-
-#define a2sll(n, s, ...)                                                      \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2sll_c,                                       \
-		const void *:  a2sll_c,                                       \
-		char *:        a2sll_nc,                                      \
-		void *:        a2sll_nc                                       \
-	)(n, s, __VA_ARGS__)                                                  \
-)
-
-#define a2uh(n, s, ...)                                                       \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2uh_c,                                        \
-		const void *:  a2uh_c,                                        \
-		char *:        a2uh_nc,                                       \
-		void *:        a2uh_nc                                        \
-	)(n, s, __VA_ARGS__)                                                  \
-)
-
-#define a2ui(n, s, ...)                                                       \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2ui_c,                                        \
-		const void *:  a2ui_c,                                        \
-		char *:        a2ui_nc,                                       \
-		void *:        a2ui_nc                                        \
-	)(n, s, __VA_ARGS__)                                                  \
-)
-
-#define a2ul(n, s, ...)                                                       \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2ul_c,                                        \
-		const void *:  a2ul_c,                                        \
-		char *:        a2ul_nc,                                       \
-		void *:        a2ul_nc                                        \
-	)(n, s, __VA_ARGS__)                                                  \
-)
-
-#define a2ull(n, s, ...)                                                      \
-(                                                                             \
-	_Generic(s,                                                           \
-		const char *:  a2ull_c,                                       \
-		const void *:  a2ull_c,                                       \
-		char *:        a2ull_nc,                                      \
-		void *:        a2ull_nc                                       \
-	)(n, s, __VA_ARGS__)                                                  \
-)
-
-
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2sh_c(short *restrict n, const char *s,
-    const char **restrict endp, int base, short min, short max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2si_c(int *restrict n, const char *s,
-    const char **restrict endp, int base, int min, int max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2sl_c(long *restrict n, const char *s,
-    const char **restrict endp, int base, long min, long max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2sll_c(long long *restrict n, const char *s,
-    const char **restrict endp, int base, long long min, long long max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2uh_c(unsigned short *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned short min,
-    unsigned short max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2ui_c(unsigned int *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned int min, unsigned int max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2ul_c(unsigned long *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned long min, unsigned long max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2ull_c(unsigned long long *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned long long min,
-    unsigned long long max);
-
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2sh_nc(short *restrict n, char *s,
-    char **restrict endp, int base, short min, short max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2si_nc(int *restrict n, char *s,
-    char **restrict endp, int base, int min, int max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2sl_nc(long *restrict n, char *s,
-    char **restrict endp, int base, long min, long max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2sll_nc(long long *restrict n, char *s,
-    char **restrict endp, int base, long long min, long long max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2uh_nc(unsigned short *restrict n, char *s,
-    char **restrict endp, int base, unsigned short min, unsigned short max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2ui_nc(unsigned int *restrict n, char *s,
-    char **restrict endp, int base, unsigned int min, unsigned int max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2ul_nc(unsigned long *restrict n, char *s,
-    char **restrict endp, int base, unsigned long min, unsigned long max);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1) ATTR_ACCESS(write_only, 3)
-inline int a2ull_nc(unsigned long long *restrict n, char *s,
-    char **restrict endp, int base, unsigned long long min,
-    unsigned long long max);
-
-
-inline int
-a2sh_c(short *restrict n, const char *s,
-    const char **restrict endp, int base, short min, short max)
-{
-	return a2sh(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2si_c(int *restrict n, const char *s,
-    const char **restrict endp, int base, int min, int max)
-{
-	return a2si(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2sl_c(long *restrict n, const char *s,
-    const char **restrict endp, int base, long min, long max)
-{
-	return a2sl(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2sll_c(long long *restrict n, const char *s,
-    const char **restrict endp, int base, long long min, long long max)
-{
-	return a2sll(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2uh_c(unsigned short *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned short min,
-    unsigned short max)
-{
-	return a2uh(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2ui_c(unsigned int *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned int min, unsigned int max)
-{
-	return a2ui(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2ul_c(unsigned long *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned long min, unsigned long max)
-{
-	return a2ul(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2ull_c(unsigned long long *restrict n, const char *s,
-    const char **restrict endp, int base, unsigned long long min,
-    unsigned long long max)
-{
-	return a2ull(n, (char *) s, (char **) endp, base, min, max);
-}
-
-
-inline int
-a2sh_nc(short *restrict n, char *s,
-    char **restrict endp, int base, short min, short max)
-{
-	int  status;
-
-	*n = strtoi_(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2si_nc(int *restrict n, char *s,
-    char **restrict endp, int base, int min, int max)
-{
-	int  status;
-
-	*n = strtoi_(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2sl_nc(long *restrict n, char *s,
-    char **restrict endp, int base, long min, long max)
-{
-	int  status;
-
-	*n = strtoi_(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2sll_nc(long long *restrict n, char *s,
-    char **restrict endp, int base, long long min, long long max)
-{
-	int  status;
-
-	*n = strtoi_(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2uh_nc(unsigned short *restrict n, char *s,
-    char **restrict endp, int base, unsigned short min,
-    unsigned short max)
-{
-	int  status;
-
-	*n = strtou_noneg(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2ui_nc(unsigned int *restrict n, char *s,
-    char **restrict endp, int base, unsigned int min, unsigned int max)
-{
-	int  status;
-
-	*n = strtou_noneg(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2ul_nc(unsigned long *restrict n, char *s,
-    char **restrict endp, int base, unsigned long min, unsigned long max)
-{
-	int  status;
-
-	*n = strtou_noneg(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
-
-
-inline int
-a2ull_nc(unsigned long long *restrict n, char *s,
-    char **restrict endp, int base, unsigned long long min,
-    unsigned long long max)
-{
-	int  status;
-
-	*n = strtou_noneg(s, endp, base, min, max, &status);
-	if (status != 0) {
-		errno = status;
-		return -1;
-	}
-	return 0;
-}
+#define str2uh(...)    str2i(unsigned short, __VA_ARGS__)
+#define str2ui(...)    str2i(unsigned int, __VA_ARGS__)
+#define str2ul(...)    str2i(unsigned long, __VA_ARGS__)
+#define str2ull(...)   str2i(unsigned long long, __VA_ARGS__)


 #endif  // include guard
--- a/lib/atoi/getnum.c
+++ b/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);
--- a/lib/atoi/getnum.h
+++ b/lib/atoi/getnum.h
@@ -0,0 +1,59 @@
+// 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.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
--- a/lib/atoi/str2i.c
+++ b/lib/atoi/str2i.c
@@ -1,18 +0,0 @@
-// SPDX-FileCopyrightText: 2007-2009, Nicolas François
-// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
-// SPDX-License-Identifier: BSD-3-Clause
-
-
-#include <config.h>
-
-#include "atoi/str2i.h"
-
-
-extern inline int str2sh(short *restrict n, const char *restrict s);
-extern inline int str2si(int *restrict n, const char *restrict s);
-extern inline int str2sl(long *restrict n, const char *restrict s);
-extern inline int str2sll(long long *restrict n, const char *restrict s);
-extern inline int str2uh(unsigned short *restrict n, const char *restrict s);
-extern inline int str2ui(unsigned int *restrict n, const char *restrict s);
-extern inline int str2ul(unsigned long *restrict n, const char *restrict s);
-extern inline int str2ull(unsigned long long *restrict n, const char *restrict s);
--- a/lib/atoi/str2i.h
+++ b/lib/atoi/str2i.h
@@ -1,108 +0,0 @@
-// SPDX-FileCopyrightText: 2007-2009, Nicolas François
-// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
-// SPDX-License-Identifier: BSD-3-Clause
-
-
-#ifndef SHADOW_INCLUDE_LIB_ATOI_STR2I_H_
-#define SHADOW_INCLUDE_LIB_ATOI_STR2I_H_
-
-
-#include <config.h>
-
-#include <limits.h>
-#include <stddef.h>
-
-#include "atoi/a2i.h"
-#include "attr.h"
-
-
-#define str2i(TYPE, ...)                                                      \
-(                                                                             \
-	_Generic((TYPE) 0,                                                    \
-		short:              str2sh,                                   \
-		int:                str2si,                                   \
-		long:               str2sl,                                   \
-		long long:          str2sll,                                  \
-		unsigned short:     str2uh,                                   \
-		unsigned int:       str2ui,                                   \
-		unsigned long:      str2ul,                                   \
-		unsigned long long: str2ull                                   \
-	)(__VA_ARGS__)                                                        \
-)
-
-
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2sh(short *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2si(int *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2sl(long *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2sll(long long *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2uh(unsigned short *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2ui(unsigned int *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2ul(unsigned long *restrict n, const char *restrict s);
-ATTR_STRING(2) ATTR_ACCESS(write_only, 1)
-inline int str2ull(unsigned long long *restrict n, const char *restrict s);
-
-
-inline int
-str2sh(short *restrict n, const char *restrict s)
-{
-	return a2sh(n, s, NULL, 0, SHRT_MIN, SHRT_MAX);
-}
-
-
-inline int
-str2si(int *restrict n, const char *restrict s)
-{
-	return a2si(n, s, NULL, 0, INT_MIN, INT_MAX);
-}
-
-
-inline int
-str2sl(long *restrict n, const char *restrict s)
-{
-	return a2sl(n, s, NULL, 0, LONG_MIN, LONG_MAX);
-}
-
-
-inline int
-str2sll(long long *restrict n, const char *restrict s)
-{
-	return a2sll(n, s, NULL, 0, LLONG_MIN, LLONG_MAX);
-}
-
-
-inline int
-str2uh(unsigned short *restrict n, const char *restrict s)
-{
-	return a2uh(n, s, NULL, 0, 0, USHRT_MAX);
-}
-
-
-inline int
-str2ui(unsigned int *restrict n, const char *restrict s)
-{
-	return a2ui(n, s, NULL, 0, 0, UINT_MAX);
-}
-
-
-inline int
-str2ul(unsigned long *restrict n, const char *restrict s)
-{
-	return a2ul(n, s, NULL, 0, 0, ULONG_MAX);
-}
-
-
-inline int
-str2ull(unsigned long long *restrict n, const char *restrict s)
-{
-	return a2ull(n, s, NULL, 0, 0, ULLONG_MAX);
-}
-
-
-#endif  // include guard
--- a/lib/atoi/strtoi.c
+++ b/lib/atoi/strtoi.c
@@ -1,15 +0,0 @@
-// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
-// SPDX-License-Identifier: BSD-3-Clause
-
-
-#include <config.h>
-
-#include "atoi/strtoi.h"
-
-#include <stdint.h>
-
-
-extern inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
-    intmax_t min, intmax_t max, int *restrict status);
-extern inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
-    uintmax_t min, uintmax_t max, int *restrict status);
--- a/lib/atoi/strtoi.h
+++ b/lib/atoi/strtoi.h
@@ -1,96 +0,0 @@
-// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
-// SPDX-License-Identifier: BSD-3-Clause
-
-
-#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOI_H_
-#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_H_
-
-
-#include <config.h>
-
-#include <errno.h>
-#include <inttypes.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <sys/param.h>
-
-#include "attr.h"
-
-
-#define strtoNmax(TYPE, ...)                                                  \
-(                                                                             \
-	_Generic((TYPE) 0,                                                    \
-		intmax_t:  strtoimax,                                         \
-		uintmax_t: strtoumax                                          \
-	)(__VA_ARGS__)                                                        \
-)
-
-
-#define strtoN(s, endp, base, min, max, status, TYPE)                         \
-({                                                                            \
-	const char  *s_ = s;                                                  \
-	char        **endp_ = endp;                                           \
-	int         base_ = base;                                             \
-	TYPE        min_ = min;                                               \
-	TYPE        max_ = max;                                               \
-	int         *status_ = status;                                        \
-                                                                              \
-	int         e_, st_;                                                  \
-	char        *end_;                                                    \
-	TYPE        n_;                                                       \
-                                                                              \
-	if (endp_ == NULL)                                                    \
-		endp_ = &end_;                                                \
-	if (status_ == NULL)                                                  \
-		status_ = &st_;                                               \
-                                                                              \
-	if (base_ != 0 && (base_ < 0 || base_ > 36)) {                        \
-		*status_ = EINVAL;                                            \
-		n_ = 0;                                                       \
-                                                                              \
-	} else {                                                              \
-		e_ = errno;                                                   \
-		errno = 0;                                                    \
-		n_ = strtoNmax(TYPE, s_, endp_, base_);                       \
-                                                                              \
-		if (*endp_ == s_)                                             \
-			*status_ = ECANCELED;                                 \
-		else if (errno == ERANGE || n_ < min_ || n_ > max_)           \
-			*status_ = ERANGE;                                    \
-		else if (**endp_ != '\0')                                     \
-			*status_ = ENOTSUP;                                   \
-		else                                                          \
-			*status_ = 0;                                         \
-                                                                              \
-		errno = e_;                                                   \
-	}                                                                     \
-	MAX(min_, MIN(max_, n_));                                             \
-})
-
-
-ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
-inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
-    intmax_t min, intmax_t max, int *restrict status);
-ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
-inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
-    uintmax_t min, uintmax_t max, int *restrict status);
-
-
-inline intmax_t
-strtoi_(const char *s, char **restrict endp, int base,
-    intmax_t min, intmax_t max, int *restrict status)
-{
-	return strtoN(s, endp, base, min, max, status, intmax_t);
-}
-
-
-inline uintmax_t
-strtou_(const char *s, char **restrict endp, int base,
-    uintmax_t min, uintmax_t max, int *restrict status)
-{
-	return strtoN(s, endp, base, min, max, status, uintmax_t);
-}
-
-
-#endif  // include guard
--- a/lib/atoi/strtoi/strtoi.c
+++ b/lib/atoi/strtoi/strtoi.c
@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include "config.h"
+
+#include "atoi/strtoi/strtoi.h"
+
+#include <stdint.h>
+
+
+extern inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
+    intmax_t min, intmax_t max, int *restrict status);
--- a/lib/atoi/strtoi/strtoi.h
+++ b/lib/atoi/strtoi/strtoi.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_STRTOI_STRTOI_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_STRTOI_H_
+
+
+#include "config.h"
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/param.h>
+
+#include "attr.h"
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline intmax_t strtoi_(const char *s, char **restrict endp, int base,
+    intmax_t min, intmax_t max, int *restrict status);
+
+
+inline intmax_t
+strtoi_(const char *s, char **restrict endp, int base,
+    intmax_t min, intmax_t max, int *restrict status)
+{
+	int        e, st;
+	char       *end;
+	intmax_t   n;
+
+	if (endp == NULL)
+		endp = &end;
+	if (status == NULL)
+		status = &st;
+
+	if (base != 0 && (base < 2 || base > 36)) {
+		*status = EINVAL;
+		return MAX(min, MIN(max, 0));
+	}
+
+	e = errno;
+	errno = 0;
+
+	n = strtoimax(s, endp, base);
+
+	if (*endp == s)
+		*status = ECANCELED;
+	else if (errno == ERANGE || n < min || n > max)
+		*status = ERANGE;
+	else if (**endp != '\0')
+		*status = ENOTSUP;
+	else
+		*status = 0;
+
+	errno = e;
+
+	return MAX(min, MIN(max, n));
+}
+
+
+#endif  // include guard
--- a/lib/atoi/strtoi/strtou.c
+++ b/lib/atoi/strtoi/strtou.c
@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include "config.h"
+
+#include "atoi/strtoi/strtou.h"
+
+#include <stdint.h>
+
+
+extern inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status);
--- a/lib/atoi/strtoi/strtou.h
+++ b/lib/atoi/strtoi/strtou.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_STRTOI_STRTOU_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_STRTOU_H_
+
+
+#include "config.h"
+
+#include <errno.h>
+#include <inttypes.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/param.h>
+
+#include "attr.h"
+
+
+ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
+inline uintmax_t strtou_(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status);
+
+
+inline uintmax_t
+strtou_(const char *s, char **restrict endp, int base,
+    uintmax_t min, uintmax_t max, int *restrict status)
+{
+	int        e, st;
+	char       *end;
+	uintmax_t  n;
+
+	if (endp == NULL)
+		endp = &end;
+	if (status == NULL)
+		status = &st;
+
+	if (base != 0 && (base < 2 || base > 36)) {
+		*status = EINVAL;
+		return MAX(min, 0);
+	}
+
+	e = errno;
+	errno = 0;
+
+	n = strtoumax(s, endp, base);
+
+	if (*endp == s)
+		*status = ECANCELED;
+	else if (errno == ERANGE || n < min || n > max)
+		*status = ERANGE;
+	else if (**endp != '\0')
+		*status = ENOTSUP;
+	else
+		*status = 0;
+
+	errno = e;
+
+	return MAX(min, MIN(max, n));
+}
+
+
+#endif  // include guard
--- a/lib/atoi/strtoi/strtou_noneg.c
+++ b/lib/atoi/strtoi/strtou_noneg.c
@@ -1,10 +1,10 @@
-// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
 // SPDX-License-Identifier: BSD-3-Clause


-#include <config.h>
+#include "config.h"

-#include "atoi/strtou_noneg.h"
+#include "atoi/strtoi/strtou_noneg.h"

 #include <stdint.h>

--- a/lib/atoi/strtoi/strtou_noneg.h
+++ b/lib/atoi/strtoi/strtou_noneg.h
@@ -1,18 +1,19 @@
-// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
 // SPDX-License-Identifier: BSD-3-Clause


-#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
-#define SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
+#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOI_STRTOU_NONEG_H_
+#define SHADOW_INCLUDE_LIB_ATOI_STRTOI_STRTOU_NONEG_H_


-#include <config.h>
+#include "config.h"

 #include <errno.h>
 #include <stddef.h>
 #include <stdint.h>

-#include "atoi/strtoi.h"
+#include "atoi/strtoi/strtoi.h"
+#include "atoi/strtoi/strtou.h"
 #include "attr.h"


--- a/lib/attr.h
+++ b/lib/attr.h
@@ -5,28 +5,57 @@
 #include "config.h"


-#if defined(__GNUC__)
-# define MAYBE_UNUSED                __attribute__((unused))
-# define NORETURN                    __attribute__((__noreturn__))
-# define format_attr(type, fmt, va)  __attribute__((format(type, fmt, va)))
-# define ATTR_ACCESS(...)            __attribute__((access(__VA_ARGS__)))
+#if !defined(__has_c_attribute)
+# define __has_c_attribute(x)  0
+#endif
+
+
+#if __has_c_attribute(maybe_unused)
+# define MAYBE_UNUSED                [[maybe_unused]]
 #else
 # define MAYBE_UNUSED
+#endif
+
+#if __has_c_attribute(noreturn)
+# define NORETURN                    [[noreturn]]
+#else
 # define NORETURN
+#endif
+
+#if __has_c_attribute(gnu::format)
+# define format_attr(type, fmt, va)  [[gnu::format(type, fmt, va)]]
+#else
 # define format_attr(type, fmt, va)
+#endif
+
+#if __has_c_attribute(gnu::access)
+# define ATTR_ACCESS(...)            [[gnu::access(__VA_ARGS__)]]
+#else
 # define ATTR_ACCESS(...)
 #endif

+#if __has_c_attribute(gnu::alloc_size)
+# define ATTR_ALLOC_SIZE(...)        [[gnu::alloc_size(__VA_ARGS__)]]
+#else
+# define ATTR_ALLOC_SIZE(...)
+#endif
+
 #if (__GNUC__ >= 11) && !defined(__clang__)
 # define ATTR_MALLOC(deallocator)    [[gnu::malloc(deallocator)]]
 #else
 # define ATTR_MALLOC(deallocator)
 #endif

-#if (__GNUC__ >= 14)
-# define ATTR_STRING(...)       [[gnu::null_terminated_string_arg(__VA_ARGS__)]]
+#if __has_c_attribute(gnu::null_terminated_string_arg)
+# define ATTR_STRING(i)              [[gnu::null_terminated_string_arg(i)]]
 #else
-# define ATTR_STRING(...)
+# define ATTR_STRING(i)
+#endif
+
+#if __has_c_attribute(gnu::nonstring)
+# define ATTR_NONSTRING              [[gnu::nonstring]]
+#else
+# define ATTR_NONSTRING
 #endif


--- a/lib/audit_help.c
+++ b/lib/audit_help.c
@@ -11,7 +11,7 @@
 *
 */

-#include <config.h>
+#include "config.h"

 #ifdef WITH_AUDIT

@@ -25,6 +25,8 @@
 #include "attr.h"
 #include "prototypes.h"
 #include "shadowlog.h"
+#include "string/sprintf/snprintf.h"
+
 int audit_fd;

 void audit_help_open (void)
@@ -46,17 +48,20 @@ void audit_help_open (void)

 /*
 * This function will log a message to the audit system using a predefined
- * message format. Parameter usage is as follows:
+ * message format. For additional information on the user account lifecycle
+ * events check
+ * <https://github.com/linux-audit/audit-documentation/wiki/SPEC-User-Account-Lifecycle-Events>
 *
- * type - type of message: AUDIT_USER_CHAUTHTOK for changing any account
- *	  attributes.
- * pgname - program's name
+ * Parameter usage is as follows:
+ *
+ * type - type of message. A list of possible values is available in
+ *        "audit-records.h" file.
 * op  -  operation. "adding user", "changing finger info", "deleting group"
 * name - user's account or group name. If not available use NULL.
 * id  -  uid or gid that the operation is being performed on. This is used
 *	  only when user is NULL.
 */
-void audit_logger (int type, MAYBE_UNUSED const char *pgname, const char *op,
+void audit_logger (int type, const char *op,
                   const char *name, unsigned int id,
                   shadow_audit_result result)
 {
@@ -68,6 +73,47 @@ void audit_logger (int type, MAYBE_UNUSED const char *pgname, const char *op,
 	}
 }

+/*
+ * This function will log a message to the audit system using a predefined
+ * message format. For additional information on the group account lifecycle
+ * events check
+ * <https://github.com/linux-audit/audit-documentation/wiki/SPEC-User-Account-Lifecycle-Events>
+ *
+ * Parameter usage is as follows:
+ *
+ * type - type of message. A list of possible values is available in
+ *        "audit-records.h" file.
+ * op  -  operation. "adding-user", "modify-group", "deleting-user-from-group"
+ * name - user's account or group name. If not available use NULL.
+ * id  -  uid or gid that the operation is being performed on. This is used
+ *	  only when user is NULL.
+ * grp_type - type of group: "grp" or "new_group"
+ * grp - group name associated with event
+ */
+void
+audit_logger_with_group(int type, const char *op, const char *name,
+    id_t id, const char *grp_type, const char *grp,
+    shadow_audit_result result)
+{
+	int len;
+	char enc_group[GROUP_NAME_MAX_LENGTH * 2 + 1];
+	char buf[countof(enc_group) + 100];
+
+	if (audit_fd < 0)
+		return;
+
+	len = strnlen(grp, sizeof(enc_group)/2);
+	if (audit_value_needs_encoding(grp, len)) {
+		stprintf_a(buf, "%s %s=%s", op, grp_type,
+			audit_encode_value(enc_group, grp, len));
+	} else {
+		stprintf_a(buf, "%s %s=\"%s\"", op, grp_type, grp);
+	}
+
+	audit_log_acct_message(audit_fd, type, NULL, buf, name, id,
+		               NULL, NULL, NULL, result);
+}
+
 void audit_logger_message (const char *message, shadow_audit_result result)
 {
 	if (audit_fd < 0) {
--- a/lib/basename.c
+++ b/lib/basename.c
@@ -1,10 +1,8 @@
-/*
- * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 1997, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
+// SPDX-FileCopyrightText: 1990-1994, Julianne Frances Haugh
+// SPDX-FileCopyrightText: 1996-1997, Marek Michałkiewicz
+// SPDX-FileCopyrightText: 2003-2005, Tomasz Kłoczko
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause

 /*
 * basename.c - not worth copyrighting :-).  Some versions of Linux libc
@@ -13,19 +11,21 @@
 * --marekm
 */

-#include <config.h>
+#include "config.h"

-#ident "$Id$"
+#include <stddef.h>
+#include <stdlib.h>

-#include "defines.h"
 #include "prototypes.h"
-/*@observer@*/const char *Basename (const char *str)
+#include "string/strspn/stprcspn.h"
+
+
+/*@observer@*/const char *
+Basename(const char *str)
 {
 	if (str == NULL) {
 		abort ();
 	}

-	char *cp = strrchr (str, '/');
-
-	return (NULL != cp) ? cp + 1 : str;
+	return stprcspn(str, "/");
 }
--- a/lib/bit.c
+++ b/lib/bit.c
@@ -5,7 +5,7 @@
 */


-#include <config.h>
+#include "config.h"

 #ident "$Id$"

--- a/lib/bit.h
+++ b/lib/bit.h
@@ -9,7 +9,7 @@
 #define SHADOW_INCLUDE_LIB_BIT_H_


-#include <config.h>
+#include "config.h"

 #include <limits.h>

--- a/lib/cast.h
+++ b/lib/cast.h
@@ -6,7 +6,7 @@
 #define SHADOW_INCLUDE_LIB_CAST_H_


-#include <config.h>
+#include "config.h"


 #define const_cast(T, p)  _Generic(p, const T:  (T) (p))
--- a/lib/chkhash.c
+++ b/lib/chkhash.c
@@ -0,0 +1,82 @@
+#include "config.h"
+
+#include "chkhash.h"
+
+#include <regex.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <string.h>
+
+#include "string/strcmp/streq.h"
+#include "string/strcmp/strprefix.h"
+
+
+/*
+ * match_regex - return true if match, false if not
+ */
+bool 
+match_regex(const char *pattern, const char *string) 
+{
+	regex_t regex;
+	int result;
+
+	if (regcomp(&regex, pattern, REG_EXTENDED) != 0)
+		return false;
+
+	result = regexec(&regex, string, 0, NULL, 0);
+	regfree(&regex);
+
+	return result == 0;
+}
+
+
+/*
+ * is_valid_hash - check if the given string is a valid password hash
+ *
+ * Returns true if the string appears to be a valid hash, false otherwise.
+ *
+ * regex from: https://man.archlinux.org/man/crypt.5.en
+ */
+bool 
+is_valid_hash(const char *hash) 
+{
+	hash = strprefix(hash, "!") ?: hash;
+
+	// Passwordless account; discouraged
+	if (streq(hash, ""))
+		return true;
+
+	if (streq(hash, "*"))
+		return true;
+
+	// Minimum hash length
+	if (strlen(hash) < 13)
+		return false;
+
+	// Yescrypt: $y$ + algorithm parameters + $ + salt + $ + 43-char (minimum) hash
+	if (match_regex("^\\$y\\$[./A-Za-z0-9]+\\$[./A-Za-z0-9]{1,86}\\$[./A-Za-z0-9]{43}$", hash))
+		return true;
+
+	// Bcrypt: $2[abxy]$ + 2-digit cost + $ + 53-char hash
+	if (match_regex("^\\$2[abxy]\\$[0-9]{2}\\$[./A-Za-z0-9]{53}$", hash))
+		return true;
+
+	// SHA-512: $6$ + salt + $ + 86-char hash
+	if (match_regex("^\\$6\\$(rounds=[1-9][0-9]{3,8}\\$)?[^$:\\n]{1,16}\\$[./A-Za-z0-9]{86}$", hash))
+		return true;
+
+	// SHA-256: $5$ + salt + $ + 43-char hash
+	if (match_regex("^\\$5\\$(rounds=[1-9][0-9]{3,8}\\$)?[^$:\\n]{1,16}\\$[./A-Za-z0-9]{43}$", hash))
+		return true;
+
+	// MD5: $1$ + salt + $ + 22-char hash
+	if (match_regex("^\\$1\\$[^$:\\n]{1,8}\\$[./A-Za-z0-9]{22}$", hash))
+		return true;
+
+	// DES: exactly 13 characters from [A-Za-z0-9./]
+	if (match_regex("^[./A-Za-z0-9]{13}$", hash))
+		return true;
+
+	// Not a valid hash
+	return false;
+}
--- a/lib/chkhash.h
+++ b/lib/chkhash.h
@@ -0,0 +1,13 @@
+#ifndef SHADOW_INCLUDE_CHKHASH_H
+#define SHADOW_INCLUDE_CHKHASH_H
+
+
+#include "config.h"
+
+#include <stdbool.h>
+
+
+bool is_valid_hash(const char *hash);
+
+
+#endif
--- a/lib/chkname.c
+++ b/lib/chkname.c
@@ -2,7 +2,7 @@
 // SPDX-FileCopyrightText: 1996-2000, Marek Michałkiewicz
 // SPDX-FileCopyrightText: 2001-2005, Tomasz Kłoczko
 // SPDX-FileCopyrightText: 2005-2008, Nicolas François
-// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-FileCopyrightText: 2023-2025, Alejandro Colomar <alx@kernel.org>
 // SPDX-License-Identifier: BSD-3-Clause


@@ -12,10 +12,14 @@
 * return values:
 *   true  - OK
 *   false - bad name
+ * errors:
+ *   EINVAL	Invalid name
+ *   EILSEQ	Invalid name character sequence (acceptable with --badname)
+ *   EOVERFLOW	Name longer than maximum size
 */


-#include <config.h>
+#include "config.h"

 #ident "$Id$"

@@ -24,10 +28,20 @@
 #include <limits.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <string.h>
 #include <unistd.h>

 #include "defines.h"
 #include "chkname.h"
+#include "string/ctype/strchrisascii/strchriscntrl.h"
+#include "string/ctype/strisascii/strisdigit.h"
+#include "string/strcmp/streq.h"
+#include "string/strcmp/strcaseeq.h"
+
+
+#ifndef  LOGIN_NAME_MAX
+# define LOGIN_NAME_MAX  256
+#endif


 int allow_bad_names = false;
@@ -38,81 +52,93 @@ login_name_max_size(void)
 {
 	long  conf;

-	errno = 0;
 	conf = sysconf(_SC_LOGIN_NAME_MAX);
-	if (conf == -1 && errno != 0)
+	if (conf == -1)
 		return LOGIN_NAME_MAX;

 	return conf;
 }


-static bool is_valid_name (const char *name)
+static bool
+is_valid_name(const char *name)
 {
+	if (streq(name, "")
+	 || streq(name, ".")
+	 || streq(name, "..")
+	 || strspn(name, "-")
+	 || strpbrk(name, " \"#',/:;")
+	 || strchriscntrl(name)
+	 || strisdigit(name))
+	{
+		errno = EINVAL;
+		return false;
+	}
+
 	if (allow_bad_names) {
 		return true;
 	}

 	/*
-         * User/group names must match BRE regex:
-         *    [a-zA-Z0-9_.][a-zA-Z0-9_.-]*$\?
-         *
-         * as a non-POSIX, extension, allow "$" as the last char for
-         * sake of Samba 3.x "add machine script"
-         *
-         * Also do not allow fully numeric names or just "." or "..".
-         */
-	int numeric;
+	 * User/group names must match BRE regex:
+	 *    [a-zA-Z0-9_.][a-zA-Z0-9_.-]*$\?
+	 *
+	 * as a non-POSIX, extension, allow "$" as the last char for
+	 * sake of Samba 3.x "add machine script"
+	 */

-	if ('\0' == *name ||
-	    ('.' == *name && (('.' == name[1] && '\0' == name[2]) ||
-			      '\0' == name[1])) ||
-	    !((*name >= 'a' && *name <= 'z') ||
+	if (!((*name >= 'a' && *name <= 'z') ||
 	      (*name >= 'A' && *name <= 'Z') ||
 	      (*name >= '0' && *name <= '9') ||
 	      *name == '_' ||
-	      *name == '.')) {
+	      *name == '.'))
+	{
+		errno = EILSEQ;
 		return false;
 	}

-	numeric = isdigit(*name);
-
-	while ('\0' != *++name) {
+	while (!streq(++name, "")) {
 		if (!((*name >= 'a' && *name <= 'z') ||
 		      (*name >= 'A' && *name <= 'Z') ||
 		      (*name >= '0' && *name <= '9') ||
 		      *name == '_' ||
 		      *name == '.' ||
 		      *name == '-' ||
-		      (*name == '$' && name[1] == '\0')
-		     )) {
+		      streq(name, "$")
+		     ))
+		{
+			errno = EILSEQ;
 			return false;
 		}
-		numeric &= isdigit(*name);
 	}

-	return !numeric;
+	return true;
 }


 bool
 is_valid_user_name(const char *name)
 {
-	if (strlen(name) >= login_name_max_size())
+	if (strlen(name) >= login_name_max_size()) {
+		errno = EOVERFLOW;
 		return false;
+	}

 	return is_valid_name(name);
 }


-bool is_valid_group_name (const char *name)
+bool
+is_valid_group_name(const char *name)
 {
 	/*
 	 * Arbitrary limit for group names.
 	 * HP-UX 10 limits to 16 characters
 	 */
 	if (   (GROUP_NAME_MAX_LENGTH > 0)
-	    && (strlen (name) > GROUP_NAME_MAX_LENGTH)) {
+	    && (strlen (name) > GROUP_NAME_MAX_LENGTH))
+	{
+		errno = EOVERFLOW;
 		return false;
 	}

--- a/lib/chkname.h
+++ b/lib/chkname.h
@@ -21,7 +21,7 @@
 */


-#include <config.h>
+#include "config.h"

 #include <stdbool.h>
 #include <stddef.h>
--- a/lib/chowndir.c
+++ b/lib/chowndir.c
@@ -7,18 +7,21 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

 #include <sys/types.h>
 #include <sys/stat.h>
-#include "prototypes.h"
-#include "defines.h"
 #include <fcntl.h>
 #include <stdio.h>
 #include <unistd.h>

+#include "defines.h"
+#include "prototypes.h"
+#include "string/strcmp/streq.h"
+
+
 static int chown_tree_at (int at_fd,
                const char *path,
                uid_t old_uid,
@@ -56,8 +59,8 @@ static int chown_tree_at (int at_fd,
 		/*
 		 * Skip the "." and ".." entries
 		 */
-		if (   (strcmp (ent->d_name, ".") == 0)
-		    || (strcmp (ent->d_name, "..") == 0)) {
+		if (   streq(ent->d_name, ".")
+		    || streq(ent->d_name, "..")) {
 			continue;
 		}

--- a/lib/chowntty.c
+++ b/lib/chowntty.c
@@ -7,7 +7,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

--- a/lib/cleanup.c
+++ b/lib/cleanup.c
@@ -4,7 +4,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #include <assert.h>
 #include <stdio.h>
@@ -44,7 +44,7 @@ void do_cleanups (void)
 {
 	unsigned int i;

-	/* Make sure there were no overflow */
+	/* Make sure there were no overflows */
 	assert (NULL == cleanup_functions[CLEANUP_FUNCTIONS-1]);

 	if (getpid () != cleanup_pid) {
--- a/lib/cleanup_group.c
+++ b/lib/cleanup_group.c
@@ -4,7 +4,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #include <assert.h>
 #include <stdio.h>
@@ -27,7 +27,7 @@ void cleanup_report_add_group (void *group_name)

 	SYSLOG ((LOG_ERR, "failed to add group %s", name));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_GROUP, log_get_progname(),
+	audit_logger (AUDIT_ADD_GROUP,
 	              "",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
@@ -45,7 +45,7 @@ void cleanup_report_del_group (void *group_name)

 	SYSLOG ((LOG_ERR, "failed to remove group %s", name));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_DEL_GROUP, log_get_progname(),
+	audit_logger (AUDIT_DEL_GROUP,
 	              "",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
@@ -62,7 +62,7 @@ void cleanup_report_mod_group (void *cleanup_info)
 	         gr_dbname (),
 	         info->action));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_USER_ACCT, log_get_progname(),
+	audit_logger (AUDIT_GRP_MGMT,
 	              info->audit_msg,
 	              info->name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
@@ -80,7 +80,7 @@ void cleanup_report_mod_gshadow (void *cleanup_info)
 	         sgr_dbname (),
 	         info->action));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_USER_ACCT, log_get_progname(),
+	audit_logger (AUDIT_GRP_MGMT,
 	              info->audit_msg,
 	              info->name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
@@ -100,8 +100,8 @@ void cleanup_report_add_group_group (void *group_name)

 	SYSLOG ((LOG_ERR, "failed to add group %s to %s", name, gr_dbname ()));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_GROUP, log_get_progname(),
-	              "adding group to /etc/group",
+	audit_logger (AUDIT_ADD_GROUP,
+	              "adding-group",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
 #endif
@@ -120,8 +120,8 @@ void cleanup_report_add_group_gshadow (void *group_name)

 	SYSLOG ((LOG_ERR, "failed to add group %s to %s", name, sgr_dbname ()));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_GROUP, log_get_progname(),
-	              "adding group to /etc/gshadow",
+	audit_logger (AUDIT_GRP_MGMT,
+	              "adding-shadow-group",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
 #endif
@@ -143,8 +143,8 @@ void cleanup_report_del_group_group (void *group_name)
 	         "failed to remove group %s from %s",
 	         name, gr_dbname ()));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_GROUP, log_get_progname(),
-	              "removing group from /etc/group",
+	audit_logger (AUDIT_DEL_GROUP,
+	              "removing-group",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
 #endif
@@ -166,8 +166,8 @@ void cleanup_report_del_group_gshadow (void *group_name)
 	         "failed to remove group %s from %s",
 	         name, sgr_dbname ()));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_GROUP, log_get_progname(),
-	              "removing group from /etc/gshadow",
+	audit_logger (AUDIT_GRP_MGMT,
+	              "removing-shadow-group",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
 #endif
@@ -179,15 +179,17 @@ void cleanup_report_del_group_gshadow (void *group_name)
 *
 * It should be registered after the group file is successfully locked.
 */
-void cleanup_unlock_group (MAYBE_UNUSED void *arg)
+void cleanup_unlock_group (void *process_selinux)
 {
-	if (gr_unlock () == 0) {
+	bool process = *((bool *) process_selinux);
+
+	if (gr_unlock (process) == 0) {
 		fprintf (log_get_logfd(),
 		         _("%s: failed to unlock %s\n"),
 		         log_get_progname(), gr_dbname ());
 		SYSLOG ((LOG_ERR, "failed to unlock %s", gr_dbname ()));
 #ifdef WITH_AUDIT
-		audit_logger_message ("unlocking group file",
+		audit_logger_message ("unlocking-group",
 		                      SHADOW_AUDIT_FAILURE);
 #endif
 	}
@@ -199,15 +201,17 @@ void cleanup_unlock_group (MAYBE_UNUSED void *arg)
 *
 * It should be registered after the gshadow file is successfully locked.
 */
-void cleanup_unlock_gshadow (MAYBE_UNUSED void *arg)
+void cleanup_unlock_gshadow (void *process_selinux)
 {
-	if (sgr_unlock () == 0) {
+	bool process = *((bool *) process_selinux);
+
+	if (sgr_unlock (process) == 0) {
 		fprintf (log_get_logfd(),
 		         _("%s: failed to unlock %s\n"),
 		         log_get_progname(), sgr_dbname ());
 		SYSLOG ((LOG_ERR, "failed to unlock %s", sgr_dbname ()));
 #ifdef WITH_AUDIT
-		audit_logger_message ("unlocking gshadow file",
+		audit_logger_message ("unlocking-gshadow",
 		                      SHADOW_AUDIT_FAILURE);
 #endif
 	}
--- a/lib/cleanup_user.c
+++ b/lib/cleanup_user.c
@@ -4,12 +4,11 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #include <assert.h>
 #include <stdio.h>

-#include "attr.h"
 #include "defines.h"
 #include "pwio.h"
 #include "shadowio.h"
@@ -27,7 +26,7 @@ void cleanup_report_add_user (void *user_name)

 	SYSLOG ((LOG_ERR, "failed to add user %s", name));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_USER, log_get_progname(),
+	audit_logger (AUDIT_ADD_USER,
 	              "",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
@@ -44,7 +43,7 @@ void cleanup_report_mod_passwd (void *cleanup_info)
 	         pw_dbname (),
 	         info->action));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_USER_ACCT, log_get_progname(),
+	audit_logger (AUDIT_USER_MGMT,
 	              info->audit_msg,
 	              info->name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
@@ -64,8 +63,8 @@ void cleanup_report_add_user_passwd (void *user_name)

 	SYSLOG ((LOG_ERR, "failed to add user %s to %s", name, pw_dbname ()));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_USER, log_get_progname(),
-	              "adding user to /etc/passwd",
+	audit_logger (AUDIT_ADD_USER,
+	              "adding-user",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
 #endif
@@ -84,8 +83,8 @@ void cleanup_report_add_user_shadow (void *user_name)

 	SYSLOG ((LOG_ERR, "failed to add user %s to %s", name, spw_dbname ()));
 #ifdef WITH_AUDIT
-	audit_logger (AUDIT_ADD_USER, log_get_progname(),
-	              "adding user to /etc/shadow",
+	audit_logger (AUDIT_USER_MGMT,
+	              "adding-shadow-user",
 	              name, AUDIT_NO_ID,
 	              SHADOW_AUDIT_FAILURE);
 #endif
@@ -96,15 +95,17 @@ void cleanup_report_add_user_shadow (void *user_name)
 *
 * It should be registered after the passwd database is successfully locked.
 */
-void cleanup_unlock_passwd (MAYBE_UNUSED void *arg)
+void cleanup_unlock_passwd (void *process_selinux)
 {
-	if (pw_unlock () == 0) {
+	bool process = *((bool *) process_selinux);
+
+	if (pw_unlock (process) == 0) {
 		fprintf (log_get_logfd(),
 		         _("%s: failed to unlock %s\n"),
 		         log_get_progname(), pw_dbname ());
 		SYSLOG ((LOG_ERR, "failed to unlock %s", pw_dbname ()));
 #ifdef WITH_AUDIT
-		audit_logger_message ("unlocking passwd file",
+		audit_logger_message ("unlocking-passwd",
 		                      SHADOW_AUDIT_FAILURE);
 #endif
 	}
@@ -115,15 +116,17 @@ void cleanup_unlock_passwd (MAYBE_UNUSED void *arg)
 *
 * It should be registered after the shadow database is successfully locked.
 */
-void cleanup_unlock_shadow (MAYBE_UNUSED void *arg)
+void cleanup_unlock_shadow (void *process_selinux)
 {
-	if (spw_unlock () == 0) {
+	bool process = *((bool *) process_selinux);
+
+	if (spw_unlock (process) == 0) {
 		fprintf (log_get_logfd(),
 		         _("%s: failed to unlock %s\n"),
 		         log_get_progname(), spw_dbname ());
 		SYSLOG ((LOG_ERR, "failed to unlock %s", spw_dbname ()));
 #ifdef WITH_AUDIT
-		audit_logger_message ("unlocking shadow file",
+		audit_logger_message ("unlocking-shadow",
 		                      SHADOW_AUDIT_FAILURE);
 #endif
 	}
--- a/lib/commonio.c
+++ b/lib/commonio.c
@@ -7,32 +7,40 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

-#include "defines.h"
 #include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
 #include <sys/stat.h>
 #include <stdlib.h>
-#include <limits.h>
 #include <utime.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <stdio.h>
-#include <signal.h>

-#include "alloc.h"
-#include "memzero.h"
+#include "alloc/malloc.h"
+#include "atoi/getnum.h"
+#include "commonio.h"
+#include "defines.h"
 #include "nscd.h"
-#include "sssd.h"
 #ifdef WITH_TCB
 #include <tcb.h>
 #endif				/* WITH_TCB */
 #include "prototypes.h"
-#include "commonio.h"
 #include "shadowlog_internal.h"
-#include "string/sprintf.h"
+#include "sssd.h"
+#include "string/memset/memzero.h"
+#include "string/sprintf/aprintf.h"
+#include "string/sprintf/snprintf.h"
+#include "string/strcmp/streq.h"
+#include "string/strcmp/strprefix.h"
+#include "string/strerrno.h"
+#include "string/strtok/stpsep.h"


 /* local function prototypes */
@@ -69,17 +77,10 @@ int lrename (const char *old, const char *new)
 {
 	int res;
 	char *r = NULL;
-
-#ifndef __GLIBC__
-	char resolved_path[PATH_MAX];
-#endif				/* !__GLIBC__ */
 	struct stat sb;
+
 	if (lstat (new, &sb) == 0 && S_ISLNK (sb.st_mode)) {
-#ifdef __GLIBC__ /* now a POSIX.1-2008 feature */
 		r = realpath (new, NULL);
-#else				/* !__GLIBC__ */
-		r = realpath (new, resolved_path);
-#endif				/* !__GLIBC__ */
 		if (NULL == r) {
 			perror ("realpath in lrename()");
 		} else {
@@ -89,9 +90,7 @@ int lrename (const char *old, const char *new)

 	res = rename (old, new);

-#ifdef __GLIBC__
 	free (r);
-#endif				/* __GLIBC__ */

 	return res;
 }
@@ -104,7 +103,7 @@ static int check_link_count (const char *file, bool log)
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: %s file stat error: %s\n",
-			                shadow_progname, file, strerror (errno));
+			                shadow_progname, file, strerrno());
 		}
 		return 0;
 	}
@@ -135,19 +134,19 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: %s: %s\n",
-			                shadow_progname, file, strerror (errno));
+			                shadow_progname, file, strerrno());
 		}
 		return 0;
 	}

 	pid = getpid ();
-	SNPRINTF(buf, "%lu", (unsigned long) pid);
+	stprintf_a(buf, "%lu", (unsigned long) pid);
 	len = (ssize_t) strlen (buf) + 1;
 	if (write_full(fd, buf, len) == -1) {
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: %s file write error: %s\n",
-			                shadow_progname, file, strerror (errno));
+			                shadow_progname, file, strerrno());
 		}
 		(void) close (fd);
 		unlink (file);
@@ -157,7 +156,7 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: %s file sync error: %s\n",
-			                shadow_progname, file, strerror (errno));
+			                shadow_progname, file, strerrno());
 		}
 		(void) close (fd);
 		unlink (file);
@@ -176,13 +175,13 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: %s: %s\n",
-			                shadow_progname, lock, strerror (errno));
+			                shadow_progname, lock, strerrno());
 		}
 		unlink (file);
 		errno = EINVAL;
 		return 0;
 	}
-	len = read (fd, buf, sizeof (buf) - 1);
+	len = read(fd, buf, sizeof(buf) - 1);
 	close (fd);
 	if (len <= 0) {
 		if (log) {
@@ -194,7 +193,7 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		errno = EINVAL;
 		return 0;
 	}
-	buf[len] = '\0';
+	stpcpy(&buf[len], "");
 	if (get_pid(buf, &pid) == -1) {
 		if (log) {
 			(void) fprintf (shadow_logfd,
@@ -219,7 +218,7 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: cannot get lock %s: %s\n",
-			                shadow_progname, lock, strerror (errno));
+			                shadow_progname, lock, strerrno());
 		}
 		unlink (file);
 		return 0;
@@ -232,7 +231,7 @@ static int do_lock_file (const char *file, const char *lock, bool log)
 		if (log) {
 			(void) fprintf (shadow_logfd,
 			                "%s: cannot get lock %s: %s\n",
-			                shadow_progname, lock, strerror (errno));
+			                shadow_progname, lock, strerrno());
 		}
 	}

@@ -330,9 +329,8 @@ static void free_linked_list (struct commonio_db *db)

 		free (p->line);

-		if (NULL != p->eptr) {
-			db->ops->free (p->eptr);
-		}
+		if (NULL != p->eptr)
+			db->ops->cio_free(p->eptr);

 		free (p);
 	}
@@ -342,7 +340,7 @@ static void free_linked_list (struct commonio_db *db)

 int commonio_setname (struct commonio_db *db, const char *name)
 {
-	SNPRINTF(db->filename, "%s", name);
+	stprintf_a(db->filename, "%s", name);
 	db->setname = true;
 	return 1;
 }
@@ -364,9 +362,12 @@ int commonio_lock_nowait (struct commonio_db *db, bool log)
 		return 1;
 	}

-	if (asprintf(&file, "%s.%ju", db->filename, (uintmax_t) getpid()) == -1)
+	file = aprintf("%s.%ju", db->filename, (uintmax_t) getpid());
+	if (file == NULL)
 		goto cleanup_ENOMEM;
-	if (asprintf(&lock, "%s.lock", db->filename) == -1)
+
+	lock = aprintf("%s.lock", db->filename);
+	if (lock == NULL)
 		goto cleanup_ENOMEM;

 	if (do_lock_file (file, lock, log) != 0) {
@@ -466,13 +467,13 @@ static void dec_lock_count (void)
 }


-int commonio_unlock (struct commonio_db *db)
+int commonio_unlock (struct commonio_db *db, bool process_selinux)
 {
 	char  lock[1029];

 	if (db->isopen) {
 		db->readonly = true;
-		if (commonio_close (db) == 0) {
+		if (commonio_close (db, process_selinux) == 0) {
 			if (db->locked) {
 				dec_lock_count ();
 			}
@@ -485,7 +486,7 @@ int commonio_unlock (struct commonio_db *db)
 		 * then call ulckpwdf() (if used) on last unlock.
 		 */
 		db->locked = false;
-		SNPRINTF(lock, "%s.lock", db->filename);
+		stprintf_a(lock, "%s.lock", db->filename);
 		unlink (lock);
 		dec_lock_count ();
 		return 1;
@@ -519,7 +520,7 @@ static void add_one_entry (struct commonio_db *db,

 static bool name_is_nis (const char *name)
 {
-	return (('+' == name[0]) || ('-' == name[0]));
+	return strprefix(name, "+") || strprefix(name, "-");
 }


@@ -547,7 +548,7 @@ static void add_one_entry_nis (struct commonio_db *db,
 	struct commonio_entry *p;

 	for (p = db->head; NULL != p; p = p->next) {
-		if (name_is_nis (p->eptr ? db->ops->getname (p->eptr)
+		if (name_is_nis (p->eptr ? db->ops->cio_getname(p->eptr)
 		                         : p->line)) {
 			/*@-mustfreeonly@*/
 			newp->next = p;
@@ -566,16 +567,12 @@ static void add_one_entry_nis (struct commonio_db *db,
 }
 #endif				/* KEEP_NIS_AT_END */

-/* Initial buffer size, as well as increment if not sufficient
-   (for reading very long lines in group files).  */
-#define BUFLEN 4096

-int commonio_open (struct commonio_db *db, int mode)
+int
+commonio_open(struct commonio_db *db, int mode)
 {
 	char *buf;
-	char *cp;
 	char *line;
-	struct commonio_entry *p;
 	void *eptr = NULL;
 	int flags = mode;
 	size_t buflen;
@@ -634,34 +631,12 @@ int commonio_open (struct commonio_db *db, int mode)
 		return 0;
 	}

-	buflen = BUFLEN;
-	buf = MALLOC(buflen, char);
-	if (NULL == buf) {
-		goto cleanup_ENOMEM;
-	}
+	buf = NULL;
+	while (getline(&buf, &buflen, db->fp) != -1) {
+		struct commonio_entry  *p;

-	while (db->ops->fgets (buf, buflen, db->fp) == buf) {
-		while (   (strrchr (buf, '\n') == NULL)
-		       && (feof (db->fp) == 0)) {
-			size_t len;
-
-			buflen += BUFLEN;
-			cp = REALLOC(buf, buflen, char);
-			if (NULL == cp) {
-				goto cleanup_buf;
-			}
-			buf = cp;
-			len = strlen (buf);
-			if (db->ops->fgets (buf + len,
-			                    (int) (buflen - len),
-			                    db->fp) == NULL) {
-				goto cleanup_buf;
-			}
-		}
-		cp = strrchr (buf, '\n');
-		if (NULL != cp) {
-			*cp = '\0';
-		}
+		if (stpsep(buf, "\n") == NULL)
+			goto cleanup_buf;

 		line = strdup (buf);
 		if (NULL == line) {
@@ -671,16 +646,16 @@ int commonio_open (struct commonio_db *db, int mode)
 		if (name_is_nis (line)) {
 			eptr = NULL;
 		} else {
-			eptr = db->ops->parse (line);
+			eptr = db->ops->cio_parse(line);
 			if (NULL != eptr) {
-				eptr = db->ops->dup (eptr);
+				eptr = db->ops->cio_dup(eptr);
 				if (NULL == eptr) {
 					goto cleanup_line;
 				}
 			}
 		}

-		p = MALLOC(1, struct commonio_entry);
+		p = malloc_T(1, struct commonio_entry);
 		if (NULL == p) {
 			goto cleanup_entry;
 		}
@@ -698,7 +673,7 @@ int commonio_open (struct commonio_db *db, int mode)
 		goto cleanup_errno;
 	}

-	if ((NULL != db->ops->open_hook) && (db->ops->open_hook () == 0)) {
+	if ((NULL != db->ops->cio_open_hook) && (db->ops->cio_open_hook() == 0)) {
 		goto cleanup_errno;
 	}

@@ -706,14 +681,12 @@ int commonio_open (struct commonio_db *db, int mode)
 	return 1;

      cleanup_entry:
-	if (NULL != eptr) {
-		db->ops->free (eptr);
-	}
+	if (NULL != eptr)
+		db->ops->cio_free(eptr);
      cleanup_line:
 	free (line);
      cleanup_buf:
 	free (buf);
-      cleanup_ENOMEM:
 	errno = ENOMEM;
      cleanup_errno:
 	saved_errno = errno;
@@ -724,6 +697,7 @@ int commonio_open (struct commonio_db *db, int mode)
 	return 0;
 }

+
 /*
 * Sort given db according to cmp function (usually compares uids)
 */
@@ -757,7 +731,7 @@ commonio_sort (struct commonio_db *db, int (*cmp) (const void *, const void *))
 		return 0;
 	}

-	entries = MALLOC(n, struct commonio_entry *);
+	entries = malloc_T(n, struct commonio_entry *);
 	if (entries == NULL) {
 		return -1;
 	}
@@ -776,7 +750,7 @@ commonio_sort (struct commonio_db *db, int (*cmp) (const void *, const void *))
 		entries[n] = ptr;
 		n++;
 	}
-	qsort (entries, n, sizeof (struct commonio_entry *), cmp);
+	qsort(entries, n, sizeof(struct commonio_entry *), cmp);

 	/* Take care of the head and tail separately */
 	db->head = entries[0];
@@ -825,17 +799,15 @@ int commonio_sort_wrt (struct commonio_db *shadow,
 		if (NULL == pw_ptr->eptr) {
 			continue;
 		}
-		name = passwd->ops->getname (pw_ptr->eptr);
+		name = passwd->ops->cio_getname(pw_ptr->eptr);
 		for (spw_ptr = shadow->head;
 		     NULL != spw_ptr;
 		     spw_ptr = spw_ptr->next) {
 			if (NULL == spw_ptr->eptr) {
 				continue;
 			}
-			if (strcmp (name, shadow->ops->getname (spw_ptr->eptr))
-			    == 0) {
+			if (streq(name, shadow->ops->cio_getname(spw_ptr->eptr)))
 				break;
-			}
 		}
 		if (NULL == spw_ptr) {
 			continue;
@@ -876,13 +848,13 @@ static int write_all (const struct commonio_db *db)
 		if (p->changed) {
 			eptr = p->eptr;
 			assert (NULL != eptr);
-			if (db->ops->put (eptr, db->fp) != 0) {
+			if (db->ops->cio_put(eptr, db->fp) != 0) {
 				return -1;
 			}
 		} else if (NULL != p->line) {
-			if (db->ops->fputs (p->line, db->fp) == EOF) {
+			if (fputs(p->line, db->fp) == EOF)
 				return -1;
-			}
+
 			if (putc ('\n', db->fp) == EOF) {
 				return -1;
 			}
@@ -892,9 +864,10 @@ static int write_all (const struct commonio_db *db)
 }


-int commonio_close (struct commonio_db *db)
+int
+commonio_close(struct commonio_db *db, MAYBE_UNUSED bool process_selinux)
 {
-	int          errors = 0;
+	bool         errors = false;
 	char         buf[1024];
 	struct stat  sb;

@@ -912,11 +885,11 @@ int commonio_close (struct commonio_db *db)
 		goto success;
 	}

-	if ((NULL != db->ops->close_hook) && (db->ops->close_hook () == 0)) {
+	if ((NULL != db->ops->cio_close_hook) && (db->ops->cio_close_hook() == 0)) {
 		goto fail;
 	}

-	memzero (&sb, sizeof sb);
+	memzero(&sb, sizeof(sb));
 	if (NULL != db->fp) {
 		if (fstat (fileno (db->fp), &sb) != 0) {
 			(void) fclose (db->fp);
@@ -927,33 +900,35 @@ int commonio_close (struct commonio_db *db)
 		/*
 		 * Create backup file.
 		 */
-		if (SNPRINTF(buf, "%s-", db->filename) == -1) {
+		if (stprintf_a(buf, "%s-", db->filename) == -1) {
 			(void) fclose (db->fp);
 			db->fp = NULL;
 			goto fail;
 		}

 #ifdef WITH_SELINUX
-		if (set_selinux_file_context (db->filename, S_IFREG) != 0) {
-			errors++;
+		if (process_selinux
+		    && set_selinux_file_context (db->filename, S_IFREG) != 0) {
+			errors = true;
 		}
 #endif
 		if (create_backup (buf, db->fp) != 0) {
-			errors++;
+			errors = true;
 		}

 		if (fclose (db->fp) != 0) {
-			errors++;
+			errors = true;
 		}

 		db->fp = NULL;

 #ifdef WITH_SELINUX
-		if (reset_selinux_file_context () != 0) {
-			errors++;
+		if (process_selinux
+		    && reset_selinux_file_context () != 0) {
+			errors = true;
 		}
 #endif
-		if (errors != 0)
+		if (errors)
 			goto fail;
 	} else {
 		/*
@@ -964,12 +939,13 @@ int commonio_close (struct commonio_db *db)
 		sb.st_gid = db->st_gid;
 	}

-	if (SNPRINTF(buf, "%s+", db->filename) == -1)
+	if (stprintf_a(buf, "%s+", db->filename) == -1)
 		goto fail;

 #ifdef WITH_SELINUX
-	if (set_selinux_file_context (db->filename, S_IFREG) != 0) {
-		errors++;
+	if (process_selinux
+	    && set_selinux_file_context (db->filename, S_IFREG) != 0) {
+		errors = true;
 	}
 #endif

@@ -979,24 +955,24 @@ int commonio_close (struct commonio_db *db)
 	}

 	if (write_all (db) != 0) {
-		errors++;
+		errors = true;
 	}

 	if (fflush (db->fp) != 0) {
-		errors++;
+		errors = true;
 	}

 	if (fsync (fileno (db->fp)) != 0) {
-		errors++;
+		errors = true;
 	}

 	if (fclose (db->fp) != 0) {
-		errors++;
+		errors = true;
 	}

 	db->fp = NULL;

-	if (errors != 0) {
+	if (errors) {
 		unlink (buf);
 		goto fail;
 	}
@@ -1006,7 +982,8 @@ int commonio_close (struct commonio_db *db)
 	}

 #ifdef WITH_SELINUX
-	if (reset_selinux_file_context () != 0) {
+	if (process_selinux
+	    && reset_selinux_file_context () != 0) {
 		goto fail;
 	}
 #endif
@@ -1014,11 +991,11 @@ int commonio_close (struct commonio_db *db)
 	nscd_need_reload = true;
 	goto success;
      fail:
-	errors++;
+	errors = true;
      success:

 	free_linked_list (db);
-	return errors == 0;
+	return !errors;
 }

 static /*@dependent@*/ /*@null@*/struct commonio_entry *next_entry_by_name (
@@ -1036,7 +1013,7 @@ static /*@dependent@*/ /*@null@*/struct commonio_entry *next_entry_by_name (
 	for (p = pos; NULL != p; p = p->next) {
 		ep = p->eptr;
 		if (   (NULL != ep)
-		    && (strcmp (db->ops->getname (ep), name) == 0)) {
+		    && streq(db->ops->cio_getname(ep), name)) {
 			break;
 		}
 	}
@@ -1060,19 +1037,19 @@ int commonio_update (struct commonio_db *db, const void *eptr)
 		errno = EINVAL;
 		return 0;
 	}
-	nentry = db->ops->dup (eptr);
+	nentry = db->ops->cio_dup(eptr);
 	if (NULL == nentry) {
 		errno = ENOMEM;
 		return 0;
 	}
-	p = find_entry_by_name (db, db->ops->getname (eptr));
+	p = find_entry_by_name(db, db->ops->cio_getname(eptr));
 	if (NULL != p) {
-		if (next_entry_by_name (db, p->next, db->ops->getname (eptr)) != NULL) {
-			fprintf (shadow_logfd, _("Multiple entries named '%s' in %s. Please fix this with pwck or grpck.\n"), db->ops->getname (eptr), db->filename);
-			db->ops->free (nentry);
+		if (next_entry_by_name(db, p->next, db->ops->cio_getname(eptr)) != NULL) {
+			fprintf(shadow_logfd, _("Multiple entries named '%s' in %s. Please fix this with pwck or grpck.\n"), db->ops->cio_getname(eptr), db->filename);
+			db->ops->cio_free(nentry);
 			return 0;
 		}
-		db->ops->free (p->eptr);
+		db->ops->cio_free(p->eptr);
 		p->eptr = nentry;
 		p->changed = true;
 		db->cursor = p;
@@ -1081,9 +1058,9 @@ int commonio_update (struct commonio_db *db, const void *eptr)
 		return 1;
 	}
 	/* not found, new entry */
-	p = MALLOC(1, struct commonio_entry);
+	p = malloc_T(1, struct commonio_entry);
 	if (NULL == p) {
-		db->ops->free (nentry);
+		db->ops->cio_free(nentry);
 		errno = ENOMEM;
 		return 0;
 	}
@@ -1112,15 +1089,15 @@ int commonio_append (struct commonio_db *db, const void *eptr)
 		errno = EINVAL;
 		return 0;
 	}
-	nentry = db->ops->dup (eptr);
+	nentry = db->ops->cio_dup(eptr);
 	if (NULL == nentry) {
 		errno = ENOMEM;
 		return 0;
 	}
 	/* new entry */
-	p = MALLOC(1, struct commonio_entry);
+	p = malloc_T(1, struct commonio_entry);
 	if (NULL == p) {
-		db->ops->free (nentry);
+		db->ops->cio_free(nentry);
 		errno = ENOMEM;
 		return 0;
 	}
@@ -1181,9 +1158,8 @@ int commonio_remove (struct commonio_db *db, const char *name)

 	free (p->line);

-	if (NULL != p->eptr) {
-		db->ops->free (p->eptr);
-	}
+	if (NULL != p->eptr)
+		db->ops->cio_free(p->eptr);

 	free(p);

@@ -1242,7 +1218,7 @@ int commonio_rewind (struct commonio_db *db)

 	if (!db->isopen) {
 		errno = EINVAL;
-		return 0;
+		return NULL;
 	}
 	if (NULL == db->cursor) {
 		db->cursor = db->head;
--- a/lib/commonio.h
+++ b/lib/commonio.h
@@ -35,39 +35,30 @@ struct commonio_ops {
 	 * Make a copy of the object (for example, struct passwd)
 	 * and all strings pointed by it, in malloced memory.
 	 */
-	/*@null@*/ /*@only@*/void *(*dup) (const void *);
+	/*@null@*/ /*@only@*/void *(*cio_dup)(const void *);

 	/*
 	 * free() the object including any strings pointed by it.
 	 */
-	void (*free)(/*@only@*/void *);
+	void (*cio_free)(/*@only@*/void *);

 	/*
 	 * Return the name of the object (for example, pw_name
 	 * for struct passwd).
 	 */
-	const char *(*getname) (const void *);
+	const char *(*cio_getname)(const void *);

 	/*
 	 * Parse a string, return object (in static area -
 	 * should be copied using the dup operation above).
 	 */
-	void *(*parse) (const char *);
+	void *(*cio_parse)(const char *);

 	/*
 	 * Write the object to the file (this calls putpwent()
 	 * for struct passwd, for example).
 	 */
-	int (*put) (const void *, FILE *);
-
-	/*
-	 * fgets and fputs (can be replaced by versions that
-	 * understand line continuation conventions).
-	 */
-	ATTR_ACCESS(write_only, 1, 2)
-	/*@null@*/char *(*fgets)(/*@returned@*/char *restrict s, int n,
-	                         FILE *restrict stream);
-	int (*fputs) (const char *, FILE *);
+	int (*cio_put)(const void *, FILE *);

 	/*
 	 * open_hook and close_hook.
@@ -75,8 +66,8 @@ struct commonio_ops {
 	 * is open or before it is closed.
 	 * They return 0 on failure and 1 on success.
 	 */
-	/*@null@*/int (*open_hook) (void);
-	/*@null@*/int (*close_hook) (void);
+	/*@null@*/int (*cio_open_hook)(void);
+	/*@null@*/int (*cio_close_hook)(void);
 };

 /*
@@ -103,7 +94,7 @@ struct commonio_db {
 #endif
 	/*
 	 * Default permissions and owner for newly created data file.
-         */
+	 */
 	mode_t st_mode;
 	uid_t st_uid;
 	gid_t st_gid;
@@ -138,8 +129,8 @@ extern int commonio_append (struct commonio_db *, const void *);
 extern int commonio_remove (struct commonio_db *, const char *);
 extern int commonio_rewind (struct commonio_db *);
 extern /*@observer@*/ /*@null@*/const void *commonio_next (struct commonio_db *);
-extern int commonio_close (struct commonio_db *);
-extern int commonio_unlock (struct commonio_db *);
+extern int commonio_close (struct commonio_db *, bool);
+extern int commonio_unlock (struct commonio_db *, bool);
 extern void commonio_del_entry (struct commonio_db *,
                                const struct commonio_entry *);
 extern int commonio_sort_wrt (struct commonio_db *shadow,
--- a/lib/console.c
+++ b/lib/console.c
@@ -8,21 +8,27 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
-#include "defines.h"
+#include "config.h"
+
 #include <stdio.h>
+#include <string.h>
+
+#include "defines.h"
 #include "getdef.h"
 #include "prototypes.h"
-#include "string/strtcpy.h"
+#include "string/strcmp/streq.h"
+#include "string/strcmp/strprefix.h"
+#include "string/strcpy/strtcpy.h"
+#include "string/strtok/stpsep.h"

-#ident "$Id$"

 /*
 * This is now rather generic function which decides if "tty" is listed
 * under "cfgin" in config (directly or indirectly). Fallback to default if
 * something is bad.
 */
-static bool is_listed (const char *cfgin, const char *tty, bool def)
+static bool
+is_listed(const char *cfgin, const char *tty, bool def)
 {
 	FILE *fp;
 	char buf[1024], *s;
@@ -45,14 +51,13 @@ static bool is_listed (const char *cfgin, const char *tty, bool def)

 	if (*cons != '/') {
 		char *pbuf;
-		STRTCPY(buf, cons);
-		pbuf = &buf[0];
-		while ((s = strtok (pbuf, ":")) != NULL) {
-			if (strcmp (s, tty) == 0) {
+
+		strtcpy_a(buf, cons);
+		pbuf = buf;
+		while (NULL != (s = strsep(&pbuf, ":"))) {
+			if (streq(s, tty)) {
 				return true;
 			}
-
-			pbuf = NULL;
 		}
 		return false;
 	}
@@ -71,10 +76,9 @@ static bool is_listed (const char *cfgin, const char *tty, bool def)
 	 * See if this tty is listed in the console file.
 	 */

-	while (fgets (buf, sizeof (buf), fp) != NULL) {
-		/* Remove optional trailing '\n'. */
-		buf[strcspn (buf, "\n")] = '\0';
-		if (strcmp (buf, tty) == 0) {
+	while (fgets(buf, sizeof(buf), fp) != NULL) {
+		stpsep(buf, "\n");
+		if (streq(buf, tty)) {
 			(void) fclose (fp);
 			return true;
 		}
@@ -100,9 +104,7 @@ static bool is_listed (const char *cfgin, const char *tty, bool def)

 bool console (const char *tty)
 {
-	if (strncmp (tty, "/dev/", 5) == 0) {
-		tty += 5;
-	}
+	tty = strprefix(tty, "/dev/") ?: tty;

 	return is_listed ("CONSOLE", tty, true);
 }
--- a/lib/copydir.c
+++ b/lib/copydir.c
@@ -7,7 +7,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

@@ -17,9 +17,11 @@
 #include <sys/time.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <string.h>

-#include "alloc.h"
+#include "alloc/malloc.h"
 #include "attr.h"
+#include "fs/readlink/areadlink.h"
 #include "prototypes.h"
 #include "defines.h"
 #ifdef WITH_SELINUX
@@ -36,7 +38,10 @@
 #include <attr/libattr.h>
 #endif				/* WITH_ATTR */
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/aprintf.h"
+#include "string/strcmp/streq.h"
+#include "string/strcmp/strprefix.h"
+#include "string/strerrno.h"


 static /*@null@*/const char *src_orig;
@@ -66,14 +71,11 @@ static int copy_dir (const struct path_info *src, const struct path_info *dst,
                     const struct stat *statp, const struct timespec mt[],
                     uid_t old_uid, uid_t new_uid,
                     gid_t old_gid, gid_t new_gid);
-static /*@null@*/char *readlink_malloc (const char *filename);
 static int copy_symlink (const struct path_info *src, const struct path_info *dst,
-                         MAYBE_UNUSED bool reset_selinux,
                         const struct stat *statp, const struct timespec mt[],
                         uid_t old_uid, uid_t new_uid,
                         gid_t old_gid, gid_t new_gid);
 static int copy_hardlink (const struct path_info *dst,
-                          MAYBE_UNUSED bool reset_selinux,
                          struct link_name *lp);
 static int copy_special (const struct path_info *src, const struct path_info *dst,
                         bool reset_selinux,
@@ -97,7 +99,8 @@ static int fchown_if_needed (int fdst, const struct stat *statp,
 * error_acl - format the error messages for the ACL and EQ libraries.
 */
 format_attr(printf, 2, 3)
-static void error_acl (MAYBE_UNUSED struct error_context *ctx, const char *fmt, ...)
+static void
+error_acl(struct error_context *, const char *fmt, ...)
 {
 	va_list ap;
 	FILE *shadow_logfd = log_get_logfd();
@@ -114,7 +117,7 @@ static void error_acl (MAYBE_UNUSED struct error_context *ctx, const char *fmt,
 	if (vfprintf (shadow_logfd, fmt, ap) != 0) {
 		(void) fputs (_(": "), shadow_logfd);
 	}
-	(void) fprintf (shadow_logfd, "%s\n", strerror (errno));
+	(void) fprintf(shadow_logfd, "%s\n", strerrno());
 	va_end (ap);
 }

@@ -226,11 +229,11 @@ static /*@exposed@*/ /*@null@*/struct link_name *check_link (const char *name, c
 		return NULL;
 	}

-	lp = XMALLOC(1, struct link_name);
+	lp = xmalloc_T(1, struct link_name);
 	lp->ln_dev = sb->st_dev;
 	lp->ln_ino = sb->st_ino;
 	lp->ln_count = sb->st_nlink;
-	xasprintf(&lp->ln_name, "%s%s", dst_orig, name + strlen(src_orig));
+	lp->ln_name = xaprintf("%s%s", dst_orig, name + strlen(src_orig));
 	lp->ln_next = links;
 	links = lp;

@@ -306,26 +309,26 @@ static int copy_tree_impl (const struct path_info *src, const struct path_info *
 		dst_orig = dst->full_path;
 		set_orig = true;
 	}
-	while ((0 == err) && (ent = readdir (dir)) != NULL) {
+	while (0 == err && NULL != (ent = readdir(dir))) {
 		char              *src_name = NULL;
 		char              *dst_name;
 		struct path_info  src_entry, dst_entry;
 		/*
 		 * Skip the "." and ".." entries
 		 */
-		if (strcmp(ent->d_name, ".") == 0 ||
-		    strcmp(ent->d_name, "..") == 0)
+		if (streq(ent->d_name, ".") ||
+		    streq(ent->d_name, ".."))
 		{
 			continue;
 		}

-		if (asprintf(&src_name, "%s/%s", src->full_path, ent->d_name) == -1)
-		{
+		src_name = aprintf("%s/%s", src->full_path, ent->d_name);
+		if (src_name == NULL) {
 			err = -1;
 			continue;
 		}
-		if (asprintf(&dst_name, "%s/%s", dst->full_path, ent->d_name) == -1)
-		{
+		dst_name = aprintf("%s/%s", dst->full_path, ent->d_name);
+		if (dst_name == NULL) {
 			err = -1;
 			goto skip;
 		}
@@ -433,7 +436,7 @@ static int copy_entry (const struct path_info *src, const struct path_info *dst,
 	*/

 	else if (S_ISLNK (sb.st_mode)) {
-		err = copy_symlink (src, dst, reset_selinux, &sb, mt,
+		err = copy_symlink (src, dst, &sb, mt,
 				    old_uid, new_uid, old_gid, new_gid);
 	}

@@ -442,7 +445,7 @@ static int copy_entry (const struct path_info *src, const struct path_info *dst,
 	*/

 	else if ((lp = check_link (src->full_path, &sb)) != NULL) {
-		err = copy_hardlink (dst, reset_selinux, lp);
+		err = copy_hardlink (dst, lp);
 	}

 	/*
@@ -498,14 +501,14 @@ static int copy_dir (const struct path_info *src, const struct path_info *dst,
 		return -1;
 	}
 #endif				/* WITH_SELINUX */
-        /*
-         * If the destination is already a directory, don't change it
-         * but copy into it (recursively).
-        */
-        if (fstatat(dst->dirfd, dst->name, &dst_sb, AT_SYMLINK_NOFOLLOW) == 0 && S_ISDIR(dst_sb.st_mode)) {
-            return (copy_tree_impl (src, dst, false, reset_selinux,
-                           old_uid, new_uid, old_gid, new_gid) != 0);
-        }
+	/*
+	 * If the destination is already a directory, don't change it
+	 * but copy into it (recursively).
+	 */
+	if (fstatat(dst->dirfd, dst->name, &dst_sb, AT_SYMLINK_NOFOLLOW) == 0 && S_ISDIR(dst_sb.st_mode)) {
+		return (copy_tree_impl (src, dst, false, reset_selinux,
+		               old_uid, new_uid, old_gid, new_gid) != 0);
+	}

 	if (   (mkdirat (dst->dirfd, dst->name, 0700) != 0)
 	    || (chownat_if_needed (dst, statp,
@@ -536,42 +539,6 @@ static int copy_dir (const struct path_info *src, const struct path_info *dst,
 	return err;
 }

-/*
- * readlink_malloc - wrapper for readlink
- *
- * return NULL on error.
- * The return string shall be freed by the caller.
- */
-static /*@null@*/char *readlink_malloc (const char *filename)
-{
-	size_t size = 1024;
-
-	while (true) {
-		ssize_t nchars;
-		char *buffer = MALLOC(size, char);
-		if (NULL == buffer) {
-			return NULL;
-		}
-
-		nchars = readlink (filename, buffer, size);
-
-		if (nchars < 0) {
-			free(buffer);
-			return NULL;
-		}
-
-		if ((size_t) nchars < size) { /* The buffer was large enough */
-			/* readlink does not nul-terminate */
-			buffer[nchars] = '\0';
-			return buffer;
-		}
-
-		/* Try again with a bigger buffer */
-		free (buffer);
-		size *= 2;
-	}
-}
-
 /*
 * copy_symlink - copy a symlink
 *
@@ -583,7 +550,6 @@ static /*@null@*/char *readlink_malloc (const char *filename)
 *	Return 0 on success, -1 on error.
 */
 static int copy_symlink (const struct path_info *src, const struct path_info *dst,
-                         MAYBE_UNUSED bool reset_selinux,
                         const struct stat *statp, const struct timespec mt[],
                         uid_t old_uid, uid_t new_uid,
                         gid_t old_gid, gid_t new_gid)
@@ -602,19 +568,18 @@ static int copy_symlink (const struct path_info *src, const struct path_info *ds
 	 * destination directory name.
 	 */

-	oldlink = readlink_malloc (src->full_path);
-	if (NULL == oldlink) {
+	oldlink = areadlink(src->full_path);
+	if (NULL == oldlink)
 		return -1;
-	}

 	/* If src was a link to an entry of the src_orig directory itself,
 	 * create a link to the corresponding entry in the dst_orig
 	 * directory.
 	 */
-	if (strncmp(oldlink, src_orig, strlen(src_orig)) == 0) {
+	if (strprefix(oldlink, src_orig)) {
 		char  *dummy;

-		xasprintf(&dummy, "%s%s", dst_orig, oldlink + strlen(src_orig));
+		dummy = xaprintf("%s%s", dst_orig, oldlink + strlen(src_orig));
 		free(oldlink);
 		oldlink = dummy;
 	}
@@ -655,7 +620,6 @@ static int copy_symlink (const struct path_info *src, const struct path_info *ds
 *	Return 0 on success, -1 on error.
 */
 static int copy_hardlink (const struct path_info *dst,
-                          MAYBE_UNUSED bool reset_selinux,
                          struct link_name *lp)
 {
 	/* FIXME: selinux, ACL, Extended Attributes needed? */
@@ -686,8 +650,8 @@ static int copy_hardlink (const struct path_info *dst,
 *	Return 0 on success, -1 on error.
 */
 static int
-copy_special(const struct path_info *src, const struct path_info *dst,
-             bool reset_selinux,
+copy_special(MAYBE_UNUSED const struct path_info *src, const struct path_info *dst,
+             MAYBE_UNUSED bool reset_selinux,
             const struct stat *statp, const struct timespec mt[],
             uid_t old_uid, uid_t new_uid,
             gid_t old_gid, gid_t new_gid)
@@ -742,7 +706,7 @@ copy_special(const struct path_info *src, const struct path_info *dst,
 *	Return 0 on success, -1 on error.
 */
 static int copy_file (const struct path_info *src, const struct path_info *dst,
-                      bool reset_selinux,
+                      MAYBE_UNUSED bool reset_selinux,
                      const struct stat *statp, const struct timespec mt[],
                      uid_t old_uid, uid_t new_uid,
                      gid_t old_gid, gid_t new_gid)
@@ -794,7 +758,7 @@ static int copy_file (const struct path_info *src, const struct path_info *dst,
 		char buf[8192];
 		ssize_t cnt;

-		cnt = read (ifd, buf, sizeof buf);
+		cnt = read(ifd, buf, sizeof(buf));
 		if (cnt < 0) {
 			if (errno == EINTR) {
 				continue;
@@ -834,7 +798,7 @@ static int chown_function ## _if_needed (type_dst dst,                 \
 {                                                                      \
 	uid_t tmpuid = (uid_t) -1;                                     \
 	gid_t tmpgid = (gid_t) -1;                                     \
-                                                                       \
+	                                                               \
 	/* Use new_uid if old_uid is set to -1 or if the file was      \
 	 * owned by the user. */                                       \
 	if (((uid_t) -1 == old_uid) || (statp->st_uid == old_uid)) {   \
@@ -845,14 +809,14 @@ static int chown_function ## _if_needed (type_dst dst,                 \
 	if ((uid_t) -1 == tmpuid) {                                    \
 		tmpuid = statp->st_uid;                                \
 	}                                                              \
-                                                                       \
+	                                                               \
 	if (((gid_t) -1 == old_gid) || (statp->st_gid == old_gid)) {   \
 		tmpgid = new_gid;                                      \
 	}                                                              \
 	if ((gid_t) -1 == tmpgid) {                                    \
 		tmpgid = statp->st_gid;                                \
 	}                                                              \
-                                                                       \
+	                                                               \
 	return chown_function (dst, tmpuid, tmpgid);                   \
 }

--- a/lib/csrand.c
+++ b/lib/csrand.c
@@ -1,21 +1,19 @@
-/*
- * SPDX-FileCopyrightText:  Alejandro Colomar <alx@kernel.org>
- *
- * SPDX-License-Identifier:  BSD-3-Clause
- */
+// SPDX-FileCopyrightText: 2022-2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

+#include <fcntl.h>
 #include <limits.h>
 #include <stdint.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#if HAVE_SYS_RANDOM_H
-#include <sys/random.h>
+#if __has_include(<sys/random.h>)
+# include <sys/random.h>
 #endif
+
 #include "bit.h"
 #include "defines.h"
 #include "prototypes.h"
@@ -23,6 +21,7 @@
 #include "sizeof.h"


+static uint32_t csrand32(void);
 static uint32_t csrand_uniform32(uint32_t n);
 static unsigned long csrand_uniform_slow(unsigned long n);

@@ -33,7 +32,7 @@ static unsigned long csrand_uniform_slow(unsigned long n);
 unsigned long
 csrand(void)
 {
-	FILE           *fp;
+	int            fd;
 	unsigned long  r;

 #ifdef HAVE_GETENTROPY
@@ -55,17 +54,16 @@ csrand(void)
 #endif

 	/* Use /dev/urandom as a last resort.  */
-	fp = fopen("/dev/urandom", "r");
-	if (NULL == fp) {
+	fd = open("/dev/urandom", O_RDONLY);
+	if (fd == -1)
+		goto fail;
+
+	if (read(fd, &r, sizeof(r)) != sizeof(r)) {
+		close(fd);
 		goto fail;
 	}

-	if (fread(&r, sizeof(r), 1, fp) != 1) {
-		fclose(fp);
-		goto fail;
-	}
-
-	fclose(fp);
+	close(fd);
 	return r;

 fail:
@@ -97,6 +95,13 @@ csrand_interval(unsigned long min, unsigned long max)
 }


+static uint32_t
+csrand32(void)
+{
+	return csrand();
+}
+
+
 /*
 * Fast Random Integer Generation in an Interval
 * ACM Transactions on Modeling and Computer Simulation 29 (1), 2019
@@ -109,12 +114,12 @@ csrand_uniform32(uint32_t n)
 	uint64_t  r, mult;

 	if (n == 0)
-		return csrand();
+		return csrand32();

 	bound = -n % n;  // analogous to `2^32 % n`, since `x % y == (x-y) % y`

 	do {
-		r = csrand();
+		r = csrand32();
 		mult = r * n;
 		rem = mult;  // analogous to `mult % 2^32`
 	} while (rem < bound);  // p = (2^32 % n) / 2^32;  W.C.: n=2^31+1, p=0.5
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -41,7 +41,7 @@
 * crypt(3), crypt_gensalt(3), and their
 * feature test macros may be defined in here.
 */
-#if HAVE_CRYPT_H
+#if __has_include(<crypt.h>)
 # include <crypt.h>
 #endif

@@ -50,24 +50,16 @@

 #include <dirent.h>

-/*
- * Possible cases:
- * - /usr/include/shadow.h exists and includes the shadow group stuff.
- * - /usr/include/shadow.h exists, but we use our own gshadow.h.
- */
 #include <shadow.h>
-#if defined(SHADOWGRP) && !defined(GSHADOW)
-#include "gshadow_.h"
-#endif

 #include <limits.h>

-#ifndef	NGROUPS_MAX
-#ifdef	NGROUPS
-#define	NGROUPS_MAX	NGROUPS
-#else
-#define	NGROUPS_MAX	64
+#ifndef PATH_MAX
+#define PATH_MAX 4096
 #endif
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
 #endif

 #include <syslog.h>
@@ -76,11 +68,6 @@
 #define LOG_WARN LOG_WARNING
 #endif

-/* LOG_NOWAIT is deprecated */
-#ifndef LOG_NOWAIT
-#define LOG_NOWAIT 0
-#endif
-
 /* LOG_AUTH is deprecated, use LOG_AUTHPRIV instead */
 #ifndef LOG_AUTHPRIV
 #define LOG_AUTHPRIV LOG_AUTH
@@ -94,7 +81,7 @@
   syslogd should log the current system time for each event, and not
   trust the formatted time received from the unix domain (or worse,
   UDP) socket.  -MM */
-/* Avoid translated PAM error messages: Set LC_ALL to "C".
+/* Avoid translated PAM error messages: set LC_ALL to "C".
 * --Nekral */
 #define SYSLOG(x)							\
 	do {								\
@@ -120,7 +107,7 @@
   in just one place.  */

 #ifndef SYSLOG_OPTIONS
-/* #define SYSLOG_OPTIONS (LOG_PID | LOG_CONS | LOG_NOWAIT) */
+/* #define SYSLOG_OPTIONS (LOG_PID | LOG_CONS) */
 #define SYSLOG_OPTIONS (LOG_PID)
 #endif

@@ -157,10 +144,6 @@
 #define GROUP_FILE "/etc/group"
 #endif

-#ifndef SHADOW_FILE
-#define SHADOW_FILE "/etc/shadow"
-#endif
-
 #ifndef SUBUID_FILE
 #define SUBUID_FILE "/etc/subuid"
 #endif
@@ -169,12 +152,6 @@
 #define SUBGID_FILE "/etc/subgid"
 #endif

-#ifdef SHADOWGRP
-#ifndef SGROUP_FILE
-#define SGROUP_FILE "/etc/gshadow"
-#endif
-#endif
-
 /*
 * string to use for the pw_passwd field in /etc/passwd when using
 * shadow passwords - most systems use "x" but there are a few
--- a/lib/encrypt.c
+++ b/lib/encrypt.c
@@ -7,7 +7,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

@@ -17,6 +17,8 @@
 #include "prototypes.h"
 #include "defines.h"
 #include "shadowlog_internal.h"
+#include "string/strcmp/strprefix.h"
+

 /*@exposed@*//*@null@*/char *pw_encrypt (const char *clear, const char *salt)
 {
@@ -35,7 +37,7 @@

 	/* Some crypt() do not return NULL if the algorithm is not
 	 * supported, and return a DES encrypted password. */
-	if ((NULL != salt) && (salt[0] == '$') && (strlen (cp) <= 13))
+	if ((NULL != salt) && strprefix(salt, "$") && (strlen (cp) <= 13))
 	{
 		/*@observer@*/const char *method;
 		switch (salt[1])
@@ -65,7 +67,8 @@
 		(void) fprintf (shadow_logfd,
 		                _("crypt method not supported by libcrypt? (%s)\n"),
 		                method);
-		exit (EXIT_FAILURE);
+		errno = EINVAL;
+		return NULL;
 	}

 	if (strlen (cp) != 13) {
--- a/lib/env.c
+++ b/lib/env.c
@@ -7,7 +7,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

@@ -16,11 +16,16 @@
 #include <stdlib.h>
 #include <string.h>

-#include "alloc.h"
+#include "alloc/malloc.h"
+#include "alloc/realloc.h"
 #include "prototypes.h"
 #include "defines.h"
 #include "shadowlog.h"
-#include "string/sprintf.h"
+#include "string/sprintf/aprintf.h"
+#include "string/sprintf/snprintf.h"
+#include "string/sprintf/aprintf.h"
+#include "string/strcmp/strprefix.h"
+#include "string/strdup/strdup.h"


 /*
@@ -63,7 +68,7 @@ static const char *const noslash[] = {
 */
 void initenv (void)
 {
-	newenvp = XMALLOC(NEWENVP_STEP, char *);
+	newenvp = xmalloc_T(NEWENVP_STEP, char *);
 	*newenvp = NULL;
 }

@@ -74,7 +79,7 @@ void addenv (const char *string, /*@null@*/const char *value)
 	size_t  i, n;

 	if (NULL != value) {
-		xasprintf(&newstring, "%s=%s", string, value);
+		newstring = xaprintf("%s=%s", string, value);
 	} else {
 		newstring = xstrdup (string);
 	}
@@ -130,7 +135,7 @@ void addenv (const char *string, /*@null@*/const char *value)

 		update_environ = (environ == newenvp);

-		newenvp = XREALLOC(newenvp, newenvc + NEWENVP_STEP, char *);
+		newenvp = xrealloc_T(newenvp, newenvc + NEWENVP_STEP, char *);

 		/*
 		 * If this is our current environment, update
@@ -159,20 +164,20 @@ void set_env (int argc, char *const *argv)
 	char  *cp;

 	for (; argc > 0; argc--, argv++) {
-		if (strlen (*argv) >= sizeof variable) {
+		if (strlen(*argv) >= sizeof(variable)) {
 			continue;	/* ignore long entries */
 		}

 		cp = strchr (*argv, '=');
 		if (NULL == cp) {
-			assert(SNPRINTF(variable, "L%d", noname) != -1);
+			assert(stprintf_a(variable, "L%d", noname) != -1);
 			noname++;
 			addenv (variable, *argv);
 		} else {
 			const char *const *p;

 			for (p = forbid; NULL != *p; p++) {
-				if (strncmp (*argv, *p, strlen (*p)) == 0) {
+				if (strprefix(*argv, *p)) {
 					break;
 				}
 			}
@@ -207,7 +212,7 @@ void sanitize_env (void)

 	for (cur = envp; NULL != *cur; cur++) {
 		for (bad = forbid; NULL != *bad; bad++) {
-			if (strncmp (*cur, *bad, strlen (*bad)) == 0) {
+			if (strprefix(*cur, *bad)) {
 				for (move = cur; NULL != *move; move++) {
 					*move = *(move + 1);
 				}
@@ -219,12 +224,12 @@ void sanitize_env (void)

 	for (cur = envp; NULL != *cur; cur++) {
 		for (bad = noslash; NULL != *bad; bad++) {
-			if (strncmp (*cur, *bad, strlen (*bad)) != 0) {
+			if (!strprefix(*cur, *bad)) {
 				continue;
 			}
-			if (strchr (*cur, '/') == NULL) {
+			if (!strchr(*cur, '/'))
 				continue;	/* OK */
-			}
+
 			for (move = cur; NULL != *move; move++) {
 				*move = *(move + 1);
 			}
--- a/lib/exit_if_null.c
+++ b/lib/exit_if_null.c
@@ -0,0 +1,10 @@
+// SPDX-FileCopyrightText: 2023-2025, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include "config.h"
+
+#include "exit_if_null.h"
+
+
+extern inline void exit_if_null_(void *p);
--- a/lib/exit_if_null.h
+++ b/lib/exit_if_null.h
@@ -0,0 +1,48 @@
+// SPDX-FileCopyrightText: 2023-2025, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_EXIT_IF_NULL_H_
+#define SHADOW_INCLUDE_LIB_EXIT_IF_NULL_H_
+
+
+#include "config.h"
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "shadowlog.h"
+#include "string/strerrno.h"
+
+
+/*
+ * This macro is used for implementing x*() variants of functions that
+ * allocate memory, such as xstrdup() for wrapping strdup(3).  The macro
+ * returns the input pointer transparently, with the same type, but
+ * calls exit(3) if the input is a null pointer (thus, if the allocation
+ * failed).
+ */
+#define exit_if_null(p)                                               \
+({                                                                    \
+	__auto_type  p_ = p;                                          \
+	                                                              \
+	exit_if_null_(p_);                                            \
+	p_;                                                           \
+})
+
+
+inline void exit_if_null_(void *p);
+
+
+inline void
+exit_if_null_(void *p)
+{
+	if (p == NULL) {
+		fprintf(log_get_logfd(), "%s: %s\n", log_get_progname(), strerrno());
+		exit(13);
+	}
+}
+
+
+#endif  // include guard
--- a/lib/failure.c
+++ b/lib/failure.c
@@ -7,7 +7,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ident "$Id$"

@@ -18,10 +18,10 @@
 #include "defines.h"
 #include "faillog.h"
 #include "failure.h"
-#include "memzero.h"
 #include "prototypes.h"
+#include "string/memset/memzero.h"
 #include "string/strftime.h"
-#include "string/strtcpy.h"
+#include "string/strcpy/strtcpy.h"


 #define	YEAR	(365L*DAY)
@@ -34,7 +34,7 @@
 void failure (uid_t uid, const char *tty, struct faillog *fl)
 {
 	int fd;
-	off_t offset_uid = (off_t) (sizeof *fl) * uid;
+	off_t offset_uid = (off_t) sizeof(*fl) * uid;

 	/*
 	 * Don't do anything if failure logging isn't set up.
@@ -59,7 +59,7 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 	 */

 	if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-	    || (read (fd, fl, sizeof *fl) != (ssize_t) sizeof *fl)) {
+	    || (read(fd, fl, sizeof(*fl)) != (ssize_t) sizeof(*fl))) {
 		/* This is not necessarily a failure. The file is
 		 * initially zero length.
 		 *
@@ -67,7 +67,7 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 		 * might reset the counter. But the new failure will be
 		 * logged.
 		 */
-		memzero (fl, sizeof *fl);
+		memzero(fl, sizeof(*fl));
 	}

 	/*
@@ -81,8 +81,8 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 		fl->fail_cnt++;
 	}

-	STRTCPY(fl->fail_line, tty);
-	(void) time (&fl->fail_time);
+	strtcpy_a(fl->fail_line, tty);
+	fl->fail_time = time(NULL);

 	/*
 	 * Seek back to the correct position in the file and write the
@@ -92,7 +92,7 @@ void failure (uid_t uid, const char *tty, struct faillog *fl)
 	 */

 	if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-	    || (write_full(fd, fl, sizeof *fl) == -1)) {
+	    || (write_full(fd, fl, sizeof(*fl)) == -1)) {
 		goto err_write;
 	}

@@ -126,7 +126,7 @@ static bool too_many_failures (const struct faillog *fl)
 		return true;	/* locked until reset manually */
 	}

-	(void) time (&now);
+	now = time(NULL);
 	if ((fl->fail_time + fl->fail_locktime) < now) {
 		return false;	/* enough time since last failure */
 	}
@@ -150,7 +150,7 @@ int failcheck (uid_t uid, struct faillog *fl, bool failed)
 {
 	int fd;
 	struct faillog fail;
-	off_t offset_uid = (off_t) (sizeof *fl) * uid;
+	off_t offset_uid = (off_t) sizeof(*fl) * uid;

 	/*
 	 * Suppress the check if the log file isn't there.
@@ -182,7 +182,7 @@ int failcheck (uid_t uid, struct faillog *fl, bool failed)
 	 */

 	if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-	    || (read (fd, fl, sizeof *fl) != (ssize_t) sizeof *fl)) {
+	    || (read(fd, fl, sizeof(*fl)) != (ssize_t) sizeof(*fl))) {
 		(void) close (fd);
 		return 1;
 	}
@@ -204,7 +204,7 @@ int failcheck (uid_t uid, struct faillog *fl, bool failed)
 		fail.fail_cnt = 0;

 		if (   (lseek (fd, offset_uid, SEEK_SET) != offset_uid)
-		    || (write_full(fd, &fail, sizeof fail) == -1)) {
+		    || (write_full(fd, &fail, sizeof(fail)) == -1)) {
 			    goto err_write;
 		}

@@ -242,19 +242,17 @@ void failprint (const struct faillog *fail)
 	struct tm *tp;
 	char lasttimeb[256];
 	char *lasttime = lasttimeb;
-	time_t NOW;

 	if (0 == fail->fail_cnt) {
 		return;
 	}

 	tp = localtime (&(fail->fail_time));
-	(void) time (&NOW);

 	/*
 	 * Print all information we have.
 	 */
-	STRFTIME(lasttimeb, "%c", tp);
+	strftime_a(lasttimeb, "%c", tp);

 	/*@-formatconst@*/
 	(void) printf (ngettext ("%d failure since last login.\n"
--- a/lib/fields.c
+++ b/lib/fields.c
@@ -7,53 +7,48 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

-#ident "$Id$"
+#include "fields.h"

 #include <ctype.h>
-#include <string.h>
+#include <stddef.h>
 #include <stdio.h>
+#include <string.h>
+
 #include "prototypes.h"
+#include "string/ctype/strisascii/strisprint.h"
+#include "string/ctype/strchrisascii/strchriscntrl.h"
+#include "string/strcmp/streq.h"
+#include "string/strspn/stpspn.h"
+#include "string/strspn/stprspn.h"
+#include "string/strtok/stpsep.h"
+

 /*
 * valid_field - insure that a field contains all legal characters
 *
- * The supplied field is scanned for non-printable and other illegal
- * characters.
- *  + -1 is returned if an illegal or control character is present.
- *  +  1 is returned if no illegal or control characters are present,
- *       but the field contains a non-printable character.
- *  +  0 is returned otherwise.
+ * Return:
+ *	-1	Illegal or control characters are present.
+ *	1	Non-ASCII characters are present.
+ *	0	All chatacters are legal and ASCII.
 */
-int valid_field (const char *field, const char *illegal)
+int
+valid_field_(const char *field, const char *illegal)
 {
-	const char *cp;
-	int err = 0;
-
-	if (NULL == field) {
+	if (NULL == field)
 		return -1;
-	}

-	/* For each character of field, search if it appears in the list
-	 * of illegal characters. */
-	if (illegal && NULL != strpbrk (field, illegal)) {
+	if (strpbrk(field, illegal))
 		return -1;
-	}
+	if (strchriscntrl(field))
+		return -1;
+	if (strisprint(field))
+		return 0;
+	if (streq(field, ""))
+		return 0;

-	/* Search if there are non-printable or control characters */
-	for (cp = field; '\0' != *cp; cp++) {
-		unsigned char c = *cp;
-		if (!isprint (c)) {
-			err = 1;
-		}
-		if (iscntrl (c)) {
-			err = -1;
-			break;
-		}
-	}
-
-	return err;
+	return 1;  // !ASCII
 }

 /*
@@ -62,44 +57,32 @@ int valid_field (const char *field, const char *illegal)
 * prompt the user with the name of the field being changed and the
 * current value.
 */
-void change_field (char *buf, size_t maxsize, const char *prompt)
+void
+change_field(char *buf, size_t maxsize, const char *prompt)
 {
 	char newf[200];
 	char *cp;

-	if (maxsize > sizeof (newf)) {
-		maxsize = sizeof (newf);
+	if (maxsize > sizeof(newf)) {
+		maxsize = sizeof(newf);
 	}

 	printf ("\t%s [%s]: ", prompt, buf);
 	(void) fflush (stdout);
-	if (fgets (newf, maxsize, stdin) != newf) {
+	if (fgets(newf, maxsize, stdin) == NULL)
 		return;
-	}

-	cp = strchr (newf, '\n');
-	if (NULL == cp) {
+	if (stpsep(newf, "\n") == NULL)
 		return;
-	}
-	*cp = '\0';

-	if ('\0' != newf[0]) {
+	if (!streq(newf, "")) {
 		/*
 		 * Remove leading and trailing whitespace.  This also
 		 * makes it possible to change the field to empty, by
 		 * entering a space.  --marekm
 		 */
-
-		while (newf < cp && isspace (cp[-1])) {
-			cp--;
-		}
-		*cp = '\0';
-
-		cp = newf;
-		while (isspace (*cp)) {
-			cp++;
-		}
-
+		stpcpy(stprspn(newf, " \t"), "");
+		cp = stpspn(newf, " \t");
 		strcpy (buf, cp);
 	}
 }
--- a/lib/fields.h
+++ b/lib/fields.h
@@ -0,0 +1,20 @@
+// SPDX-FileCopyrightText: 2025, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+#ifndef _SHADOW_INCLUDE_LIB_FIELDS_H_
+#define _SHADOW_INCLUDE_LIB_FIELDS_H_
+
+
+#include "config.h"
+
+#include <stddef.h>
+
+
+#define valid_field(field, illegal)  valid_field_(field, "" illegal "")
+
+
+int valid_field_(const char *field, const char *illegal);
+void change_field(char *buf, size_t maxsize, const char *prompt);
+
+
+#endif  // include guard
--- a/lib/find_new_gid.c
+++ b/lib/find_new_gid.c
@@ -6,27 +6,30 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #include <assert.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <errno.h>

-#include "alloc.h"
+#include "alloc/calloc.h"
 #include "prototypes.h"
 #include "groupio.h"
 #include "getdef.h"
 #include "shadowlog.h"
+#include "string/strerrno.h"
+

 /*
 * get_ranges - Get the minimum and maximum ID ranges for the search
 *
 * This function will return the minimum and maximum ranges for IDs
 *
- * 0: The function completed successfully
- * EINVAL: The provided ranges are impossible (such as maximum < minimum)
+ * 0: the function completed successfully
+ * EINVAL: the provided ranges are impossible (such as maximum < minimum)
 *
- * preferred_min: The special-case minimum value for a specifically-
+ * preferred_min: the special-case minimum value for a specifically-
 * requested ID, which may be lower than the standard min_id
 */
 static int get_ranges (bool sys_group, gid_t *min_id, gid_t *max_id,
@@ -53,11 +56,11 @@ static int get_ranges (bool sys_group, gid_t *min_id, gid_t *max_id,
 		/* Check that the ranges make sense */
 		if (*max_id < *min_id) {
 			(void) fprintf (log_get_logfd(),
-                            _("%s: Invalid configuration: SYS_GID_MIN (%lu), "
-                              "GID_MIN (%lu), SYS_GID_MAX (%lu)\n"),
-                            log_get_progname(), (unsigned long) *min_id,
-                            getdef_ulong ("GID_MIN", 1000UL),
-                            (unsigned long) *max_id);
+			    _("%s: Invalid configuration: SYS_GID_MIN (%lu), "
+			      "GID_MIN (%lu), SYS_GID_MAX (%lu)\n"),
+			    log_get_progname(), (unsigned long) *min_id,
+			    getdef_ulong ("GID_MIN", 1000UL),
+			    (unsigned long) *max_id);
 			return EINVAL;
 		}
 		/*
@@ -232,11 +235,11 @@ int find_new_gid (bool sys_group,
 	 */

 	/* Create an array to hold all of the discovered GIDs */
-	used_gids = CALLOC (gid_max + 1, bool);
+	used_gids = calloc_T(gid_max + 1, bool);
 	if (NULL == used_gids) {
 		fprintf (log_get_logfd(),
 			 _("%s: failed to allocate memory: %s\n"),
-			 log_get_progname(), strerror (errno));
+			 log_get_progname(), strerrno());
 		return -1;
 	}

@@ -244,7 +247,7 @@ int find_new_gid (bool sys_group,
 	(void) gr_rewind ();
 	highest_found = gid_min;
 	lowest_found = gid_max;
-	while ((grp = gr_next ()) != NULL) {
+	while (NULL != (grp = gr_next())) {
 		/*
 		 * Does this entry have a lower GID than the lowest we've found
 		 * so far?
--- a/lib/find_new_sub_gids.c
+++ b/lib/find_new_sub_gids.c
@@ -4,7 +4,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ifdef ENABLE_SUBIDS

--- a/lib/find_new_sub_uids.c
+++ b/lib/find_new_sub_uids.c
@@ -4,7 +4,7 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #ifdef ENABLE_SUBIDS

--- a/lib/find_new_uid.c
+++ b/lib/find_new_uid.c
@@ -6,27 +6,29 @@
 * SPDX-License-Identifier: BSD-3-Clause
 */

-#include <config.h>
+#include "config.h"

 #include <assert.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <errno.h>

-#include "alloc.h"
+#include "alloc/calloc.h"
 #include "prototypes.h"
 #include "pwio.h"
 #include "getdef.h"
 #include "shadowlog.h"
+#include "string/strerrno.h"

 /*
 * get_ranges - Get the minimum and maximum ID ranges for the search
 *
 * This function will return the minimum and maximum ranges for IDs
 *
- * 0: The function completed successfully
- * EINVAL: The provided ranges are impossible (such as maximum < minimum)
+ * 0: the function completed successfully
+ * EINVAL: the provided ranges are impossible (such as maximum < minimum)
 *
- * preferred_min: The special-case minimum value for a specifically-
+ * preferred_min: the special-case minimum value for a specifically-
 * requested ID, which may be lower than the standard min_id
 */
 static int get_ranges (bool sys_user, uid_t *min_id, uid_t *max_id,
@@ -53,11 +55,11 @@ static int get_ranges (bool sys_user, uid_t *min_id, uid_t *max_id,
 		/* Check that the ranges make sense */
 		if (*max_id < *min_id) {
 			(void) fprintf (log_get_logfd(),
-                            _("%s: Invalid configuration: SYS_UID_MIN (%lu), "
-                              "UID_MIN (%lu), SYS_UID_MAX (%lu)\n"),
-                            log_get_progname(), (unsigned long) *min_id,
-                            getdef_ulong ("UID_MIN", 1000UL),
-                            (unsigned long) *max_id);
+			    _("%s: Invalid configuration: SYS_UID_MIN (%lu), "
+			      "UID_MIN (%lu), SYS_UID_MAX (%lu)\n"),
+			    log_get_progname(), (unsigned long) *min_id,
+			    getdef_ulong ("UID_MIN", 1000UL),
+			    (unsigned long) *max_id);
 			return EINVAL;
 		}
 		/*
@@ -232,11 +234,11 @@ int find_new_uid(bool sys_user,
 	 */

 	/* Create an array to hold all of the discovered UIDs */
-	used_uids = CALLOC(uid_max + 1, bool);
+	used_uids = calloc_T(uid_max + 1, bool);
 	if (NULL == used_uids) {
 		fprintf (log_get_logfd(),
 			 _("%s: failed to allocate memory: %s\n"),
-			 log_get_progname(), strerror (errno));
+			 log_get_progname(), strerrno());
 		return -1;
 	}

@@ -244,7 +246,7 @@ int find_new_uid(bool sys_user,
 	(void) pw_rewind ();
 	highest_found = uid_min;
 	lowest_found = uid_max;
-	while ((pwd = pw_next ()) != NULL) {
+	while (NULL != (pwd = pw_next())) {
 		/*
 		 * Does this entry have a lower UID than the lowest we've found
 		 * so far?
@@ -304,7 +306,7 @@ int find_new_uid(bool sys_user,
 				return 0;
 			} else if (result == EEXIST || result == EINVAL) {
 				/*
-				 * This GID is in use or unusable, we'll
+				 * This UID is in use or unusable, we'll
 				 * continue to the next.
 				 */
 			} else {
@@ -350,7 +352,7 @@ int find_new_uid(bool sys_user,
 					return 0;
 				} else if (result == EEXIST || result == EINVAL) {
 					/*
-					 * This GID is in use or unusable, we'll
+					 * This UID is in use or unusable, we'll
 					 * continue to the next.
 					 */
 				} else {
@@ -413,7 +415,7 @@ int find_new_uid(bool sys_user,
 				return 0;
 			} else if (result == EEXIST || result == EINVAL) {
 				/*
-				 * This GID is in use or unusable, we'll
+				 * This UID is in use or unusable, we'll
 				 * continue to the next.
 				 */
 			} else {
@@ -459,7 +461,7 @@ int find_new_uid(bool sys_user,
 					return 0;
 				} else if (result == EEXIST || result == EINVAL) {
 					/*
-					 * This GID is in use or unusable, we'll
+					 * This UID is in use or unusable, we'll
 					 * continue to the next.
 					 */
 				} else {
--- a/lib/fputsx.c
+++ b/lib/fputsx.c
@@ -1,68 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
- * SPDX-FileCopyrightText: 1996 - 1999, Marek Michałkiewicz
- * SPDX-FileCopyrightText: 2005       , Tomasz Kłoczko
- * SPDX-FileCopyrightText: 2008       , Nicolas François
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
-#include <config.h>
-
-#include <stdio.h>
-#include "defines.h"
-#include "prototypes.h"
-
-#ident "$Id$"
-
-
-/*@null@*/char *
-fgetsx(/*@returned@*/char *restrict buf, int cnt, FILE *restrict f)
-{
-	char *cp = buf;
-	char *ep;
-
-	while (cnt > 0) {
-		if (fgets (cp, cnt, f) != cp) {
-			if (cp == buf) {
-				return 0;
-			} else {
-				break;
-			}
-		}
-		ep = strrchr (cp, '\\');
-		if ((NULL != ep) && (*(ep + 1) == '\n')) {
-			cnt -= ep - cp;
-			if (cnt > 0) {
-				cp = ep;
-				*cp = '\0';
-			}
-		} else {
-			break;
-		}
-	}
-	return buf;
-}
-
-int fputsx (const char *s, FILE * stream)
-{
-	int i;
-
-	for (i = 0; '\0' != *s; i++, s++) {
-		if (putc (*s, stream) == EOF) {
-			return EOF;
-		}
-
-#if 0				/* The standard getgr*() can't handle that.  --marekm */
-		if (i > (BUFSIZ / 2)) {
-			if (putc ('\\', stream) == EOF ||
-			    putc ('\n', stream) == EOF)
-				return EOF;
-
-			i = 0;
-		}
-#endif
-	}
-	return 0;
-}
-
--- a/lib/fs/mkstemp/fmkomstemp.c
+++ b/lib/fs/mkstemp/fmkomstemp.c
@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include "config.h"
+
+#include "fs/mkstemp/fmkomstemp.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+
+
+extern inline FILE *fmkomstemp(char *template, unsigned int flags, mode_t m);
--- a/lib/fs/mkstemp/fmkomstemp.h
+++ b/lib/fs/mkstemp/fmkomstemp.h
@@ -0,0 +1,44 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_FS_MKSTEMP_FMKOMSTEMP_H_
+#define SHADOW_INCLUDE_LIB_FS_MKSTEMP_FMKOMSTEMP_H_
+
+
+#include "config.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "fs/mkstemp/mkomstemp.h"
+
+
+inline FILE *fmkomstemp(char *template, unsigned int flags, mode_t m);
+
+
+// FILE make with-open(2)-flags with-mode secure temporary
+inline FILE *
+fmkomstemp(char *template, unsigned int flags, mode_t m)
+{
+	int   fd;
+	FILE  *fp;
+
+	fd = mkomstemp(template, flags, m);
+	if (fd == -1)
+		return NULL;
+
+	fp = fdopen(fd, "w");
+	if (fp == NULL)
+		goto fail;
+
+	return fp;
+fail:
+	close(fd);
+	unlink(template);
+	return NULL;
+}
+
+
+#endif  // include guard
--- a/lib/fs/mkstemp/mkomstemp.c
+++ b/lib/fs/mkstemp/mkomstemp.c
@@ -0,0 +1,12 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include "config.h"
+
+#include "fs/mkstemp/mkomstemp.h"
+
+#include <sys/types.h>
+
+
+extern inline int mkomstemp(char *template, unsigned int flags, mode_t m);
--- a/lib/fs/mkstemp/mkomstemp.h
+++ b/lib/fs/mkstemp/mkomstemp.h
@@ -0,0 +1,41 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_FS_MKSTEMP_MKOMSTEMP_H_
+#define SHADOW_INCLUDE_LIB_FS_MKSTEMP_MKOMSTEMP_H_
+
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+
+inline int mkomstemp(char *template, unsigned int flags, mode_t m);
+
+
+// make with-open(2)-like-flags with-mode secure temporary
+inline int
+mkomstemp(char *template, unsigned int flags, mode_t m)
+{
+	int  fd;
+
+	fd = mkostemp(template, flags);
+	if (fd == -1)
+		return -1;
+
+	if (fchmod(fd, m) == -1)
+		goto fail;
+
+	return fd;
+fail:
+	close(fd);
+	unlink(template);
+	return -1;
+}
+
+
+#endif  // include guard
--- a/lib/fs/readlink/areadlink.c
+++ b/lib/fs/readlink/areadlink.c
@@ -0,0 +1,10 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include "config.h"
+
+#include "fs/readlink/areadlink.h"
+
+
+extern inline char *areadlink(const char *link);
--- a/lib/fs/readlink/areadlink.h
+++ b/lib/fs/readlink/areadlink.h
@@ -0,0 +1,53 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <alx@kernel.org>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_FS_READLINK_AREADLINK_H_
+#define SHADOW_INCLUDE_LIB_FS_READLINK_AREADLINK_H_
+
+
+#include "config.h"
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "defines.h"
+#include "alloc/malloc.h"
+#include "attr.h"
+#include "fs/readlink/readlinknul.h"
+
+
+ATTR_STRING(1)
+inline char *areadlink(const char *link);
+
+
+// Similar to readlink(2), but allocate and terminate the string.
+inline char *
+areadlink(const char *link)
+{
+	size_t  size = PATH_MAX;
+
+	while (true) {
+		int   len;
+		char  *buf;
+
+		buf = malloc_T(size, char);
+		if (NULL == buf)
+			return NULL;
+
+		len = readlinknul(link, buf, size);
+		if (len != -1)
+			return buf;
+
+		free(buf);
+		if (errno != E2BIG)
+			return NULL;
+
+		size *= 2;
+	}
+}
+
+
+#endif  // include guard
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Chris Hofstaedtler	c5f795a54a	New upstream version 4.19.2	2026-01-25 14:17:08 +01:00
Chris Hofstaedtler	428fe43d86	New upstream version 4.19.0	2026-01-06 00:37:15 +01:00
Chris Hofstaedtler	9d5ab87d61	New upstream version 4.18.0	2025-08-26 22:55:14 +02:00
Chris Hofstaedtler	a9c3448878	New upstream version 4.17.4	2025-03-29 13:24:20 +01:00
Chris Hofstaedtler	a475f464e0	New upstream version 4.17.3	2025-02-24 22:57:12 +01:00
Chris Hofstaedtler	65261e28f4	New upstream version 4.17.2	2025-02-09 18:13:39 +01:00
Chris Hofstaedtler	bd724b34e0	New upstream version 4.17.1	2025-01-04 12:41:43 +01:00
Chris Hofstaedtler	c2a3ebed18	New upstream version 4.17.0	2024-12-28 13:12:23 +01:00
Chris Hofstaedtler	f78a468368	New upstream version 4.17.0~rc1	2024-12-06 19:17:25 +01:00
Chris Hofstaedtler	9f68246a01	New upstream version 4.15.3	2024-07-06 16:53:58 +02:00