code.delx.au - pulseaudio/blob - src/tests/sigbus-test.c

   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, write to the Free Software
  18   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <fcntl.h>
  27 #include <sys/mman.h>
  28
  29 #include <check.h>
  30
  31 #include <pulsecore/memtrap.h>
  32 #include <pulsecore/core-util.h>
  33
  34 START_TEST (sigbus_test) {
  35     void *p;
  36     int fd;
  37     pa_memtrap *m;
  38
  39     pa_log_set_level(PA_LOG_DEBUG);
  40     pa_memtrap_install();
  41
  42     /* Create the memory map */
  43     fail_unless((fd = open("sigbus-test-map", O_RDWR|O_TRUNC|O_CREAT, 0660)) >= 0);
  44     fail_unless(unlink("sigbus-test-map") == 0);
  45     fail_unless(ftruncate(fd, PA_PAGE_SIZE) >= 0);
  46     fail_unless((p = mmap(NULL, PA_PAGE_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) != MAP_FAILED);
  47
  48     /* Register memory map */
  49     m = pa_memtrap_add(p, PA_PAGE_SIZE);
  50
  51     /* Use memory map */
  52     pa_snprintf(p, PA_PAGE_SIZE, "This is a test that should work fine.");
  53
  54     /* Verify memory map */
  55     pa_log("Let's see if this worked: %s", (char*) p);
  56     pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m)));
  57
  58     /* Invalidate mapping */
  59     fail_unless(ftruncate(fd, 0) >= 0);
  60
  61     /* Use memory map */
  62     pa_snprintf(p, PA_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
  68     pa_memtrap_remove(m);
  69     munmap(p, PA_PAGE_SIZE);
  70     close(fd);
  71 }
  72 END_TEST
  73
  74 int main(int argc, char *argv[]) {
  75     int failed = 0;
  76     Suite *s;
  77     TCase *tc;
  78     SRunner *sr;
  79
  80     s = suite_create("Sig Bus");
  81     tc = tcase_create("sigbus");
  82     tcase_add_test(tc, sigbus_test);
  83     suite_add_tcase(s, tc);
  84
  85     sr = srunner_create(s);
  86     srunner_run_all(sr, CK_NORMAL);
  87     failed = srunner_ntests_failed(sr);
  88     srunner_free(sr);
  89
  90     return (failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
  91 }