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[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.
This commit is contained in:
Ulrich Drepper 2008-10-31 14:27:36 +00:00
parent 3cf449180c
commit 4bed549a22
3 changed files with 15 additions and 3 deletions
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6
ChangeLog
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@ -1,5 +1,11 @@
2008-10-31 Ulrich Drepper <drepper@redhat.com>
[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.
[BZ #6995]
* sysdeps/powerpc/powerpc32/dl-machine.c: Fix typo in message.

8
debug/getgroups_chk.c
View File

@ -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 ();

4
posix/bits/unistd.h
View File

@ -1,5 +1,5 @@
/* Checking macros for unistd functions.
Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
Copyright (C) 2005, 2006, 2007, 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
@ -267,7 +267,7 @@ __NTH (getgroups (int __size, __gid_t __list[]))
{
if (__bos (__list) != (size_t) -1)
{
if (!__builtin_constant_p (__size))
if (!__builtin_constant_p (__size) || __size < 0)
return __getgroups_chk (__size, __list, __bos (__list));
if (__size * sizeof (__gid_t) > __bos (__list))