about summary refs log tree commit diff
path: root/debug/getgroups_chk.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2008-10-31 14:27:36 +0000
committerUlrich Drepper <drepper@redhat.com>2008-10-31 14:27:36 +0000
commit4bed549a2277f911397ca59189ae71f79750f400 (patch)
tree0aac6faff2726fd62a37eb9c1844b930cc1c43b7 /debug/getgroups_chk.c
parent3cf449180c18bee7e1c8374a6583cb11d4a39ca7 (diff)
downloadglibc-4bed549a2277f911397ca59189ae71f79750f400.tar.gz
glibc-4bed549a2277f911397ca59189ae71f79750f400.tar.xz
glibc-4bed549a2277f911397ca59189ae71f79750f400.zip
[BZ #6980]
	* debug/getgroups_chk.c (__getgroups_chk): Return EINVAL error for
	negative sizees.
	* posix/bits/unistd.h (getgroups): Call __getgroups_chk for
	negative __size.
Diffstat (limited to 'debug/getgroups_chk.c')
-rw-r--r--debug/getgroups_chk.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/debug/getgroups_chk.c b/debug/getgroups_chk.c
index c877ddb9ca..8c3d99da7e 100644
--- a/debug/getgroups_chk.c
+++ b/debug/getgroups_chk.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2005, 2008 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
@@ -23,6 +23,12 @@
 int
 __getgroups_chk (int size, __gid_t list[], size_t listlen)
 {
+  if (__builtin_expect (size < 0, 0))
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
   if (__builtin_expect (size * sizeof (__gid_t) > listlen, 0))
     __chk_fail ();