mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-14 17:11:06 +00:00
72e4a717bd
I (and maybe one or two others) added a (C) to the copyright notice regardless of the contribution checklist[1] not mentioning it. Fix all these instances so that the notice reads as "Copyright The GNU Toolchain Authors" across the source code. [1] https://sourceware.org/glibc/wiki/Contribution%20checklist Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
/* Bug 28213: test for NULL pointer dereference in mq_notify.
|
|
Copyright The GNU Toolchain Authors.
|
|
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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <mqueue.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <support/check.h>
|
|
|
|
static mqd_t m = -1;
|
|
static const char msg[] = "hello";
|
|
|
|
static void
|
|
check_bz28213_cb (union sigval sv)
|
|
{
|
|
char buf[sizeof (msg)];
|
|
|
|
(void) sv;
|
|
|
|
TEST_VERIFY_EXIT ((size_t) mq_receive (m, buf, sizeof (buf), NULL)
|
|
== sizeof (buf));
|
|
TEST_VERIFY_EXIT (memcmp (buf, msg, sizeof (buf)) == 0);
|
|
|
|
exit (0);
|
|
}
|
|
|
|
static void
|
|
check_bz28213 (void)
|
|
{
|
|
struct sigevent sev;
|
|
|
|
memset (&sev, '\0', sizeof (sev));
|
|
sev.sigev_notify = SIGEV_THREAD;
|
|
sev.sigev_notify_function = check_bz28213_cb;
|
|
|
|
/* Step 1: Register & unregister notifier.
|
|
Helper thread should receive NOTIFY_REMOVED notification.
|
|
In a vulnerable version of glibc, NULL pointer dereference follows. */
|
|
TEST_VERIFY_EXIT (mq_notify (m, &sev) == 0);
|
|
TEST_VERIFY_EXIT (mq_notify (m, NULL) == 0);
|
|
|
|
/* Step 2: Once again, register notification.
|
|
Try to send one message.
|
|
Test is considered successful, if the callback does exit (0). */
|
|
TEST_VERIFY_EXIT (mq_notify (m, &sev) == 0);
|
|
TEST_VERIFY_EXIT (mq_send (m, msg, sizeof (msg), 1) == 0);
|
|
|
|
/* Wait... */
|
|
pause ();
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
static const char m_name[] = "/bz28213_queue";
|
|
struct mq_attr m_attr;
|
|
|
|
memset (&m_attr, '\0', sizeof (m_attr));
|
|
m_attr.mq_maxmsg = 1;
|
|
m_attr.mq_msgsize = sizeof (msg);
|
|
|
|
m = mq_open (m_name,
|
|
O_RDWR | O_CREAT | O_EXCL,
|
|
0600,
|
|
&m_attr);
|
|
|
|
if (m < 0)
|
|
{
|
|
if (errno == ENOSYS)
|
|
FAIL_UNSUPPORTED ("POSIX message queues are not implemented\n");
|
|
FAIL_EXIT1 ("Failed to create POSIX message queue: %m\n");
|
|
}
|
|
|
|
TEST_VERIFY_EXIT (mq_unlink (m_name) == 0);
|
|
|
|
check_bz28213 ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|