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tests: add a test causing SIGBUS to the compositor

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This tests the wl_shm buffer access wrappers, that are supposed to catch
the invalid accesses to a memory-mapped file beyond EOF.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Pekka Paalanen 2013-11-21 16:47:02 +02:00 committed by Kristian Høgsberg
parent bb835b419e
commit f812477fc0
2 changed files with 81 additions and 0 deletions
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4
tests/Makefile.am
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@ -11,6 +11,7 @@ module_tests = \
weston_test = weston-test.la
weston_tests = \
bad_buffer.weston \
keyboard.weston \
event.weston \
button.weston \
@ -97,6 +98,9 @@ weston_test_client_libs = \
../shared/libshared.la \
libshared-test.la
bad_buffer_weston_SOURCES = bad-buffer-test.c $(weston_test_client_src)
bad_buffer_weston_LDADD = $(weston_test_client_libs)
keyboard_weston_SOURCES = keyboard-test.c $(weston_test_client_src)
keyboard_weston_LDADD = $(weston_test_client_libs)

77
tests/bad-buffer-test.c Normal file
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@ -0,0 +1,77 @@
/*
* Copyright © 2012 Intel Corporation
* Copyright © 2013 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <unistd.h>
#include <sys/types.h>
#include "../shared/os-compatibility.h"
#include "weston-test-client-helper.h"
/* tests, that attempt to crash the compositor on purpose */
static struct wl_buffer *
create_bad_shm_buffer(struct client *client, int width, int height)
{
struct wl_shm *shm = client->wl_shm;
int stride = width * 4;
int size = stride * height;
struct wl_shm_pool *pool;
struct wl_buffer *buffer;
int fd;
fd = os_create_anonymous_file(size);
assert(fd >= 0);
pool = wl_shm_create_pool(shm, fd, size);
buffer = wl_shm_pool_create_buffer(pool, 0, width, height, stride,
WL_SHM_FORMAT_ARGB8888);
wl_shm_pool_destroy(pool);
/* Truncate the file to a small size, so that the compositor
* will access it out-of-bounds, and hit SIGBUS.
*/
assert(ftruncate(fd, 12) == 0);
close(fd);
return buffer;
}
FAIL_TEST(test_truncated_shm_file)
{
struct client *client;
struct wl_buffer *bad_buffer;
struct wl_surface *surface;
int frame;
client = client_create(46, 76, 111, 134);
assert(client);
surface = client->surface->wl_surface;
bad_buffer = create_bad_shm_buffer(client, 200, 200);
wl_surface_attach(surface, bad_buffer, 0, 0);
wl_surface_damage(surface, 0, 0, 200, 200);
frame_callback_set(surface, &frame);
wl_surface_commit(surface);
frame_callback_wait(client, &frame);
}