From 76727c324d60d74861c87af9db646922c524022f Mon Sep 17 00:00:00 2001
From: Alejandro Colomar <alx@kernel.org>
Date: Sat, 16 Nov 2024 14:02:08 +0100
Subject: [PATCH] configure.ac, lib/: Assume initgroups(3) exists

It's available in every system I checked: glibc,musl,{Free,Net,Open}BSD.

Signed-off-by: Alejandro Colomar <alx@kernel.org>
---
 configure.ac     |  2 +-
 lib/age.c        |  2 +-
 lib/prototypes.h |  2 +-
 lib/setugid.c    | 10 +++++-----
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/configure.ac b/configure.ac
index c6cdf8f23..4e31d5712 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,7 +48,7 @@ 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 \
+	lckpwdf lutimes \
 	updwtmpx innetgr \
 	getspnam_r \
 	rpmatch \
diff --git a/lib/age.c b/lib/age.c
index 72a13eab5..ff2aebe2b 100644
--- a/lib/age.c
+++ b/lib/age.c
@@ -106,7 +106,7 @@ 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)
diff --git a/lib/prototypes.h b/lib/prototypes.h
index 71bea819c..f85c14663 100644
--- a/lib/prototypes.h
+++ b/lib/prototypes.h
@@ -384,7 +384,7 @@ extern int del_seuser(const char *login_name);
 /* setugid.c */
 extern int setup_groups (const struct passwd *info);
 extern int change_uid (const struct passwd *info);
-#if (defined HAVE_INITGROUPS) && (! defined USE_PAM)
+#if !defined(USE_PAM)
 extern int setup_uid_gid (const struct passwd *info, bool is_console);
 #else
 extern int setup_uid_gid (const struct passwd *info);
diff --git a/lib/setugid.c b/lib/setugid.c
index 6dbe38ee1..cfe63e005 100644
--- a/lib/setugid.c
+++ b/lib/setugid.c
@@ -47,7 +47,7 @@ int setup_groups (const struct passwd *info)
 		closelog ();
 		return -1;
 	}
-#ifdef HAVE_INITGROUPS
+
 	/*
 	 * For systems which support multiple concurrent groups, go get
 	 * the group set from the /etc/group file.
@@ -60,7 +60,7 @@ int setup_groups (const struct passwd *info)
 		closelog ();
 		return -1;
 	}
-#endif
+
 	return 0;
 }
 
@@ -96,7 +96,7 @@ int change_uid (const struct passwd *info)
  *	Returns 0 on success, or -1 on failure.
  */
 
-#if defined (HAVE_INITGROUPS) && ! (defined USE_PAM)
+#if !defined(USE_PAM)
 int setup_uid_gid (const struct passwd *info, bool is_console)
 #else
 int setup_uid_gid (const struct passwd *info)
@@ -106,7 +106,7 @@ int setup_uid_gid (const struct passwd *info)
 		return -1;
 	}
 
-#if defined (HAVE_INITGROUPS) && ! defined (USE_PAM)
+#if !defined(USE_PAM)
 	if (is_console) {
 		const char *cp = getdef_str ("CONSOLE_GROUPS");
 
@@ -114,7 +114,7 @@ int setup_uid_gid (const struct passwd *info)
 			perror ("Warning: add_groups");
 		}
 	}
-#endif				/* HAVE_INITGROUPS && !USE_PAM*/
+#endif  // !USE_PAM
 
 	if (change_uid (info) < 0) {
 		return -1;