bpf/prog_tests/mmap.c

24 	void *bss_mmaped = NULL, *map_mmaped = NULL, *tmp0, *tmp1, *tmp2;
55 	tmp1 = mmap(NULL, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rdmap_fd, 0);
56 	if (CHECK(tmp1 != MAP_FAILED, "rdonly_write_mmap", "unexpected success\n")) {
57 		munmap(tmp1, page_size);
61 	tmp1 = mmap(NULL, page_size, PROT_READ, MAP_SHARED, rdmap_fd, 0);
62 	if (CHECK(tmp1 == MAP_FAILED, "rdonly_read_mmap", "failed: %d\n", errno))
180 	tmp1 = mmap(NULL, map_sz, PROT_READ | PROT_WRITE, MAP_SHARED,
182 	if (CHECK(tmp1 != MAP_FAILED, "data_mmap", "mmap succeeded\n")) {
183 		munmap(tmp1, map_sz);
206 	tmp1 = mmap(tmp0, 3 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED,
208 	if (CHECK(tmp0 != tmp1, "adv_mmap1", "tmp0: %p, tmp1: %p\n", tmp0, tmp1)) {
214 	err = munmap(tmp1 + page_size, page_size);
216 		munmap(tmp1, 4 * page_size);
221 	tmp2 = mmap(tmp1 + page_size, page_size, PROT_READ,
224 		munmap(tmp1, page_size);
225 		munmap(tmp1 + 2*page_size, 2 * page_size);
228 	CHECK(tmp1 + page_size != tmp2, "adv_mmap4",
229 	      "tmp1: %p, tmp2: %p\n", tmp1, tmp2);
232 	tmp2 = mmap(tmp1, 4 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED,
235 		munmap(tmp1, 4 * page_size); /* unmap page 1 */
238 	CHECK(tmp1 != tmp2, "adv_mmap6", "tmp1: %p, tmp2: %p\n", tmp1, tmp2);
253 	tmp1 = mmap(NULL, 4 * page_size, PROT_READ, MAP_SHARED | MAP_FIXED,
255 	if (CHECK(tmp1 != MAP_FAILED, "adv_mmap7", "unexpected success")) {
256 		munmap(tmp1, 4 * page_size);
260 	tmp1 = mmap(NULL, map_sz, PROT_READ, MAP_SHARED, data_map_fd, 0);
261 	if (CHECK(tmp1 == MAP_FAILED, "last_mmap", "failed %d\n", errno))
274 		munmap(tmp1, map_sz);
280 	munmap(tmp1, map_sz);