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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright 2014 Lennart Poettering
***/
#include <sys/mman.h>
#include "fd-util.h"
#include "sigbus.h"
#include "util.h"
#if HAVE_VALGRIND_VALGRIND_H
#include <valgrind/valgrind.h>
#endif
int main(int argc, char *argv[]) {
_cleanup_close_ int fd = -1;
char template[] = "/tmp/sigbus-test-XXXXXX";
void *addr = NULL;
uint8_t *p;
#if HAVE_VALGRIND_VALGRIND_H
if (RUNNING_ON_VALGRIND)
return EXIT_TEST_SKIP;
#endif
#ifdef __SANITIZE_ADDRESS__
return EXIT_TEST_SKIP;
#endif
sigbus_install();
assert_se(sigbus_pop(&addr) == 0);
assert_se((fd = mkostemp(template, O_RDWR|O_CREAT|O_EXCL)) >= 0);
assert_se(unlink(template) >= 0);
assert_se(posix_fallocate(fd, 0, page_size() * 8) >= 0);
p = mmap(NULL, page_size() * 16, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
assert_se(p != MAP_FAILED);
assert_se(sigbus_pop(&addr) == 0);
p[0] = 0xFF;
assert_se(sigbus_pop(&addr) == 0);
p[page_size()] = 0xFF;
assert_se(sigbus_pop(&addr) == 0);
p[page_size()*8] = 0xFF;
p[page_size()*8+1] = 0xFF;
p[page_size()*10] = 0xFF;
assert_se(sigbus_pop(&addr) > 0);
assert_se(addr == p + page_size() * 8);
assert_se(sigbus_pop(&addr) > 0);
assert_se(addr == p + page_size() * 10);
assert_se(sigbus_pop(&addr) == 0);
sigbus_reset();
}
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