C++ (Cpp) setup_segv_handler Examples

Example #1

File: exc_validate.c Project: AlexShiLucky/linux

int test_copy_exception(void)
{
	int page_size;
	static char *p, *q;
	unsigned long src, dst, len;

	page_size = getpagesize();
	p = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE,
		MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);

	if (p == MAP_FAILED) {
		perror("mmap");
		exit(1);
	}

	memset(p, 0, page_size);

	setup_segv_handler();

	if (mprotect(p + page_size, page_size, PROT_NONE)) {
		perror("mprotect");
		exit(1);
	}

	q = p + page_size - MAX_LEN;

	for (src = 0; src < MAX_LEN; src++) {
		for (dst = 0; dst < MAX_LEN; dst++) {
			for (len = 0; len < MAX_LEN+1; len++) {
				// printf("from=%p to=%p len=%ld\n", q+dst, q+src, len);
				do_one_test(q+dst, q+src, len);
			}
		}
	}

	printf("Totals:\n");
	printf("  Pass: %d\n", total_passed);
	printf("  Fail: %d\n", total_failed);

	return 0;
}

Example #2

File: load_unaligned_zeropad.c Project: 19Dan01/linux

static int test_body(void)
{
	unsigned long i;

	page_size = getpagesize();
	mem_region = mmap(NULL, page_size * 2, PROT_READ|PROT_WRITE,
		MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);

	FAIL_IF(mem_region == MAP_FAILED);

	for (i = 0; i < page_size; i++)
		mem_region[i] = i;

	memset(mem_region+page_size, 0, page_size);

	setup_segv_handler();

	for (i = 0; i < page_size; i++)
		FAIL_IF(do_one_test(mem_region+i, i));

	FAIL_IF(segv_error);

	return 0;
}