diff options
author | Lennart Poettering <lennart@poettering.net> | 2009-04-21 21:33:32 +0200 |
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committer | Lennart Poettering <lennart@poettering.net> | 2009-04-21 21:33:32 +0200 |
commit | 6224fac9210bd95d79685d5421eb5dac2da8a29d (patch) | |
tree | 7ee1b3a09cbc0683354a62fbf7cc7915693e5ec8 /src/tests/sigbus-test.c | |
parent | fbbcfae769770ca1191e0610ad43722a5768aa40 (diff) |
memtrap: add new logic to trap and handle SIGBUS
Diffstat (limited to 'src/tests/sigbus-test.c')
-rw-r--r-- | src/tests/sigbus-test.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/src/tests/sigbus-test.c b/src/tests/sigbus-test.c new file mode 100644 index 00000000..dec4f0f2 --- /dev/null +++ b/src/tests/sigbus-test.c @@ -0,0 +1,69 @@ +/*** + This file is part of PulseAudio. + + Copyright 2009 Lennart Poettering + + PulseAudio 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. + + PulseAudio 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 + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <fcntl.h> +#include <sys/mman.h> + +#include <pulsecore/memtrap.h> +#include <pulsecore/core-util.h> + +int main(int argc, char *argv[]) { + void *p; + int fd; + pa_memtrap *m; + + pa_log_set_level(PA_LOG_DEBUG); + + /* Create the memory map */ + pa_assert_se((fd = open("sigbus-test-map", O_RDWR|O_TRUNC|O_CREAT, 0660)) >= 0); + pa_assert_se(unlink("sigbus-test-map") == 0); + pa_assert_se(ftruncate(fd, PA_PAGE_SIZE) >= 0); + pa_assert_se((p = mmap(NULL, PA_PAGE_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) != MAP_FAILED); + + /* Register memory map */ + m = pa_memtrap_add(p, PA_PAGE_SIZE); + + /* Use memory map */ + pa_snprintf(p, PA_PAGE_SIZE, "This is a test that should work fine."); + + /* Verify memory map */ + pa_log("Let's see if this worked: %s", (char*) p); + pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m))); + + /* Invalidate mapping */ + pa_assert_se(ftruncate(fd, 0) >= 0); + + /* Use memory map */ + pa_snprintf(p, PA_PAGE_SIZE, "This is a test that should fail but get caught."); + + /* Verify memory map */ + pa_log("Let's see if this worked: %s", (char*) p); + pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m))); + + pa_memtrap_remove(m); + munmap(p, PA_PAGE_SIZE); + + return 0; +} |