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70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2009 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <pulsecore/memtrap.h>
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#include <pulsecore/core-util.h>
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int main(int argc, char *argv[]) {
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void *p;
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int fd;
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pa_memtrap *m;
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pa_log_set_level(PA_LOG_DEBUG);
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pa_memtrap_install();
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/* Create the memory map */
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pa_assert_se((fd = open("sigbus-test-map", O_RDWR|O_TRUNC|O_CREAT, 0660)) >= 0);
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pa_assert_se(unlink("sigbus-test-map") == 0);
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pa_assert_se(ftruncate(fd, PA_PAGE_SIZE) >= 0);
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pa_assert_se((p = mmap(NULL, PA_PAGE_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0)) != MAP_FAILED);
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/* Register memory map */
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m = pa_memtrap_add(p, PA_PAGE_SIZE);
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/* Use memory map */
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pa_snprintf(p, PA_PAGE_SIZE, "This is a test that should work fine.");
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/* Verify memory map */
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pa_log("Let's see if this worked: %s", (char*) p);
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pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m)));
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/* Invalidate mapping */
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pa_assert_se(ftruncate(fd, 0) >= 0);
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/* Use memory map */
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pa_snprintf(p, PA_PAGE_SIZE, "This is a test that should fail but get caught.");
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/* Verify memory map */
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pa_log("Let's see if this worked: %s", (char*) p);
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pa_log("And memtrap says it is good: %s", pa_yes_no(pa_memtrap_is_good(m)));
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pa_memtrap_remove(m);
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munmap(p, PA_PAGE_SIZE);
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return 0;
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}
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