--- coreutils-5.92/m4/jm-macros.m4.getgrouplist	2005-09-25 06:57:46.000000000 +0100

+++ coreutils-5.92/m4/jm-macros.m4	2005-10-25 14:28:45.000000000 +0100

@@ -105,6 +105,7 @@

     fchmod \

     fchown \

     ftruncate \

+    getgrouplist \

     hasmntopt \

     isascii \

     iswspace \

--- coreutils-5.92/lib/getugroups.c.getgrouplist	2005-09-22 07:47:18.000000000 +0100

+++ coreutils-5.92/lib/getugroups.c	2005-10-25 14:28:02.000000000 +0100

@@ -23,6 +23,9 @@

 # include <config.h>

 #endif

+/* We do not need this code if getgrouplist(3) is available.  */

+#ifndef HAVE_GETGROUPLIST

+

 #include <sys/types.h>

 #include <stdio.h> /* grp.h on alpha OSF1 V2.0 uses "FILE *". */

 #include <grp.h>

@@ -105,3 +108,4 @@

   return count;

 }

+#endif	/* have getgrouplist */

--- coreutils-5.92/src/id.c.getgrouplist	2005-08-11 22:02:57.000000000 +0100

+++ coreutils-5.92/src/id.c	2005-10-25 14:30:41.000000000 +0100

@@ -253,7 +253,14 @@

   if (!username)

     max_n_groups = getgroups (0, NULL);

   else

-    max_n_groups = getugroups (0, NULL, username, gid);

+    {

+#ifdef HAVE_GETGROUPLIST

+      max_n_groups = 0;

+      getgrouplist (username, gid, NULL, &max_n_groups);

+#else

+      max_n_groups = getugroups (0, NULL, username, gid);

+#endif

+    }

   if (max_n_groups < 0)

     ng = -1;

@@ -263,7 +270,22 @@

       if (!username)

 	ng = getgroups (max_n_groups, g);

       else

-	ng = getugroups (max_n_groups, g, username, gid);

+	{

+#ifdef HAVE_GETGROUPLIST

+	  int e;

+	  ng = max_n_groups;

+	  while ((e = getgrouplist (username, gid, g, &ng)) == -1

+		 && ng > max_n_groups)

+	    {

+	      max_n_groups = ng;

+	      g = xrealloc (g, max_n_groups * sizeof (GETGROUPS_T));

+	    }

+	  if (e == -1)

+	    ng = -1;

+#else

+	  ng = getugroups (max_n_groups, g, username, gid);

+#endif

+	}

     }

   if (ng < 0)