Index: sysdeps/unix/sysv/linux/sysconf.c
===================================================================
RCS file: /cvs/glibc/libc/sysdeps/unix/sysv/linux/sysconf.c,v
retrieving revision 1.9
diff -u -u -r1.9 sysconf.c
--- sysdeps/unix/sysv/linux/sysconf.c	27 Mar 2003 17:55:08 -0000	1.9
+++ sysdeps/unix/sysv/linux/sysconf.c	24 Feb 2004 00:11:08 -0000
@@ -20,6 +20,7 @@
 #include <sysdep.h>
 #include <time.h>
 #include <unistd.h>
+#include <sys/sysctl.h>
 
 static long int posix_sysconf (int name);
 
@@ -43,6 +44,20 @@
 	int r;
 	r = INTERNAL_SYSCALL (clock_getres, err, 2, CLOCK_MONOTONIC, &ts);
 	return INTERNAL_SYSCALL_ERROR_P (r, err) ? -1 : 1;
+      }
+#endif
+
+#ifdef KERN_NGROUPS_MAX
+    case _SC_NGROUPS_MAX:
+      {
+        int name[] = { CTL_KERN, KERN_NGROUPS_MAX };
+        int ngroups_max;
+        int ngroups_max_len = sizeof (ngroups_max);
+
+        if (__sysctl (name, sizeof (name) / sizeof (*name),
+                      &ngroups_max, &ngroups_max_len, 0, 0) < 0)
+            return -1;
+        return ngroups_max;
       }
 #endif