1/***
2  This file is part of PulseAudio.
3
4  Copyright 2009 Lennart Poettering
5
6  PulseAudio is free software; you can redistribute it and/or modify
7  it under the terms of the GNU Lesser General Public License as
8  published by the Free Software Foundation; either version 2.1 of the
9  License, or (at your option) any later version.
10
11  PulseAudio is distributed in the hope that it will be useful, but
12  WITHOUT ANY WARRANTY; without even the implied warranty of
13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  General Public License for more details.
15
16  You should have received a copy of the GNU Lesser General Public
17  License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18***/
19
20#ifdef HAVE_CONFIG_H
21#include <config.h>
22#endif
23
24#include <fcntl.h>
25#include <sys/mman.h>
26
27#include <check.h>
28
29#include <pulsecore/memtrap.h>
30#include <pulsecore/core-util.h>
31
32START_TEST (sigbus_test) {
33    void *p;
34    int fd;
35    pa_memtrap *m;
36    const size_t page_size = pa_page_size();
37
38    pa_log_set_level(PA_LOG_DEBUG);
39    pa_memtrap_install();
40
41    /* Create the memory map */
42    fail_unless((fd = open("sigbus-test-map", O_RDWR|O_TRUNC|O_CREAT, 0660)) >= 0);
43    fail_unless(unlink("sigbus-test-map") == 0);
44    fail_unless(ftruncate(fd, page_size) >= 0);
45    fail_unless((p = mmap(NULL, page_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) != MAP_FAILED);
46
47    /* Register memory map */
48    m = pa_memtrap_add(p, page_size);
49
50    /* Use memory map */
51    pa_snprintf(p, page_size, "This is a test that should work fine.");
52
53    /* Verify memory map */
54    pa_log("Let's see if this worked: %s", (char*) p);
55    pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m)));
56    fail_unless(pa_memtrap_is_good(m) == true);
57
58    /* Invalidate mapping */
59    fail_unless(ftruncate(fd, 0) >= 0);
60
61    /* Use memory map */
62    pa_snprintf(p, page_size, "This is a test that should fail but get caught.");
63
64    /* Verify memory map */
65    pa_log("Let's see if this worked: %s", (char*) p);
66    pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m)));
67    fail_unless(pa_memtrap_is_good(m) == false);
68
69    pa_memtrap_remove(m);
70    munmap(p, page_size);
71    close(fd);
72}
73END_TEST
74
75int main(int argc, char *argv[]) {
76    int failed = 0;
77    Suite *s;
78    TCase *tc;
79    SRunner *sr;
80
81    s = suite_create("Sig Bus");
82    tc = tcase_create("sigbus");
83    tcase_add_test(tc, sigbus_test);
84    suite_add_tcase(s, tc);
85
86    sr = srunner_create(s);
87    srunner_run_all(sr, CK_NORMAL);
88    failed = srunner_ntests_failed(sr);
89    srunner_free(sr);
90
91    return (failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
92}
93