selftests/mm/mremap_dontunmap.c

30 #define BUG_ON(condition, description)						\
48 	BUG_ON(source_mapping == MAP_FAILED, "mmap");
58 		BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,
62 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,
71 	BUG_ON(size & (page_size - 1),
73 	BUG_ON((unsigned long)addr & (page_size - 1),
102 	BUG_ON(source_mapping == MAP_FAILED, "mmap");
110 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
114 	BUG_ON(check_region_contains_byte
117 	BUG_ON(check_region_contains_byte
121 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,
123 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,
134 	BUG_ON(mem_fd < 0, "memfd_create");
136 	BUG_ON(ftruncate(mem_fd, num_pages * page_size) < 0,
142 	BUG_ON(source_mapping == MAP_FAILED, "mmap");
144 	BUG_ON(close(mem_fd) < 0, "close");
154 		BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,
159 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
163 	BUG_ON(check_region_contains_byte
169 	BUG_ON(check_region_contains_byte
173 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,
175 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,
192 	BUG_ON(dest_mapping == MAP_FAILED, "mmap");
198 	BUG_ON(source_mapping == MAP_FAILED, "mmap");
205 	BUG_ON(remapped_mapping == MAP_FAILED, "mremap");
206 	BUG_ON(remapped_mapping != dest_mapping,
211 	BUG_ON(check_region_contains_byte
216 	BUG_ON(check_region_contains_byte
220 	BUG_ON(munmap(dest_mapping, num_pages * page_size) == -1,
222 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,
249 	BUG_ON(source_mapping == MAP_FAILED, "mmap");
257 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
261 	BUG_ON(check_region_contains_byte(source_mapping, 5 * page_size, 'a') !=
263 	BUG_ON(check_region_contains_byte
268 	BUG_ON(check_region_contains_byte(dest_mapping, 5 * page_size, 'a') !=
271 	BUG_ON(munmap(dest_mapping, 5 * page_size) == -1,
273 	BUG_ON(munmap(source_mapping, num_pages * page_size) == -1,
302 	BUG_ON(source_mapping == MAP_FAILED, "mmap");
308 	BUG_ON(dest_mapping == MAP_FAILED, "mmap");
316 	BUG_ON(dest_mapping == MAP_FAILED, "mremap");
317 	BUG_ON(dest_mapping != remapped_mapping, "expected to remap to dest_mapping");
319 	BUG_ON(check_region_contains_byte(source_mapping, 5 * page_size, 0) !=
323 	BUG_ON(check_region_contains_byte(dest_mapping, 5 * page_size, 'a') != 0,
327 	BUG_ON(check_region_contains_byte(dest_mapping + (5 * page_size),
331 	BUG_ON(munmap(dest_mapping, 10 * page_size) == -1,
333 	BUG_ON(munmap(source_mapping, 5 * page_size) == -1,
357 	BUG_ON(page_buffer == MAP_FAILED, "unable to mmap a page.");
365 	BUG_ON(munmap(page_buffer, page_size) == -1,