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Use non-cancelable interfaces in setup code

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This commit is contained in:
Ulrich Drepper
2011-05-15 09:40:30 -04:00
parent 10a52685af
commit 05f399e634
2 changed files with 8 additions and 4 deletions
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9
sysdeps/unix/sysv/linux/dl-osinfo.h
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@@ -1,5 +1,5 @@
/* Operating system specific code for generic dynamic loader functions. Linux.
Copyright (C) 2000-2002,2004-2008, 2009 Free Software Foundation, Inc.
Copyright (C) 2000-2002,2004-2009,2011 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
@@ -21,6 +21,7 @@
#include <dl-sysdep.h>
#include <fcntl.h>
#include <stdint.h>
#include <not-cancel.h>
#ifndef MIN
# define MIN(a,b) (((a)<(b))?(a):(b))
@@ -67,11 +68,11 @@ _dl_setup_stack_chk_guard (void *dl_random)
if (__builtin_expect (dl_random == NULL, 0))
{
# ifdef ENABLE_STACKGUARD_RANDOMIZE
int fd = __open ("/dev/urandom", O_RDONLY);
int fd = open_not_cancel_2 ("/dev/urandom", O_RDONLY);
if (fd >= 0)
{
ssize_t reslen = __read (fd, &ret, sizeof (ret));
__close (fd);
ssize_t reslen = read_not_cancel (fd, &ret, sizeof (ret));
close_not_cancel_no_status (fd);
if (reslen == (ssize_t) sizeof (ret))
return ret;
}