Change setgroups to affect all the threads in the process.

2 files changed, 45 insertions, 4 deletions

diff --git a/sysdeps/unix/sysv/linux/i386/setgroups.c b/sysdeps/unix/sysv/linux/i386/setgroups.c
index 10f5b7c91b..42f7702530 100644
--- a/sysdeps/unix/sysv/linux/i386/setgroups.c
+++ b/sysdeps/unix/sysv/linux/i386/setgroups.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1997,1998,2000,2002,2004,2006 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,2000,2002,2004,2006,2011
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -25,6 +26,7 @@
 #include <sys/syscall.h>
 #include <bp-checks.h>
 
+#include <setxid.h>
 #include <linux/posix_types.h>
 #include <kernel-features.h>
 
@@ -44,7 +46,7 @@ int
 setgroups (size_t n, const gid_t *groups)
 {
 #if __ASSUME_32BITUIDS > 0
-  return INLINE_SYSCALL (setgroups32, 2, n, CHECK_N (groups, n));
+  return INLINE_SETXID_SYSCALL (setgroups32, 2, n, CHECK_N (groups, n));
 #else
   if (n > (size_t) __sysconf (_SC_NGROUPS_MAX))
     {
@@ -62,7 +64,8 @@ setgroups (size_t n, const gid_t *groups)
 	  int result;
 	  int saved_errno = errno;
 
-	  result = INLINE_SYSCALL (setgroups32, 2, n, CHECK_N (groups, n));
+	  result = INLINE_SETXID_SYSCALL (setgroups32, 2, n,
+					  CHECK_N (groups, n));
 	  if (result == 0 || errno != ENOSYS)
 	    return result;
 
@@ -80,7 +83,8 @@ setgroups (size_t n, const gid_t *groups)
 	    }
 	}
 
-      return INLINE_SYSCALL (setgroups, 2, n, CHECK_N (kernel_groups, n));
+      return INLINE_SETXID_SYSCALL (setgroups, 2, n,
+				    CHECK_N (kernel_groups, n));
     }
 #endif
 }
diff --git a/sysdeps/unix/sysv/linux/setgroups.c b/sysdeps/unix/sysv/linux/setgroups.c
new file mode 100644
index 0000000000..9649974699
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/setgroups.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1997,1998,2000,2002,2004,2006,2011
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <grp.h>
+#include <setxid.h>
+#include <sysdep.h>
+
+
+/* Set the group set for the current user to GROUPS (N of them).  For
+   Linux we must convert the array of groups into the format that the
+   kernel expects.  */
+int
+setgroups (size_t n, const gid_t *groups)
+{
+#ifdef __NR_setgroups32
+# error "wrong setgroups.c file used"
+#endif
+  return INLINE_SETXID_SYSCALL (setgroups, 2, n, groups);
+}
+libc_hidden_def (setgroups)