163     android::base::unique_fd fd(  in __has_memfd_support()  local
165     if (fd == -1) {  in __has_memfd_support()
170     if (fcntl(fd, F_ADD_SEALS, F_SEAL_FUTURE_WRITE) == -1) {  in __has_memfd_support()
211     int fd = TEMP_FAILURE_RETRY(open(ashmem_device_path.c_str(), O_RDWR | O_CLOEXEC));  in __ashmem_open_locked()  local
214     if (fd < 0) {  in __ashmem_open_locked()
215         fd = TEMP_FAILURE_RETRY(open("/dev/ashmem", O_RDWR | O_CLOEXEC));  in __ashmem_open_locked()
218     if (fd < 0) {  in __ashmem_open_locked()
219         return fd;  in __ashmem_open_locked()
223     int ret = TEMP_FAILURE_RETRY(fstat(fd, &st));  in __ashmem_open_locked()
226         close(fd);  in __ashmem_open_locked()
231         close(fd);  in __ashmem_open_locked()
237     return fd;  in __ashmem_open_locked()
242     int fd;  in __ashmem_open()  local
245     fd = __ashmem_open_locked();  in __ashmem_open()
248     return fd;  in __ashmem_open()
252 static int __ashmem_is_ashmem(int fd, int fatal)  in __ashmem_is_ashmem()  argument
257     if (fstat(fd, &st) < 0) {  in __ashmem_is_ashmem()
268             int fd = __ashmem_open_locked();  in __ashmem_is_ashmem()  local
269             if (fd < 0) {  in __ashmem_is_ashmem()
276             close(fd);  in __ashmem_is_ashmem()
287               fd, st.st_mode, major(st.st_rdev), minor(st.st_rdev),  in __ashmem_is_ashmem()
292               fd, st.st_mode, major(st.st_rdev), minor(st.st_rdev),  in __ashmem_is_ashmem()
302 static int __ashmem_check_failure(int fd, int result)  in __ashmem_check_failure()  argument
304     if (result == -1 && errno == ENOTTY) __ashmem_is_ashmem(fd, 1);  in __ashmem_check_failure()
308 static bool memfd_is_ashmem(int fd) {  in memfd_is_ashmem()  argument
311     if (__ashmem_is_ashmem(fd, 0) == 0) {  in memfd_is_ashmem()
323 int ashmem_valid(int fd)  in ashmem_valid()  argument
325     if (has_memfd_support() && !memfd_is_ashmem(fd)) {  in ashmem_valid()
329     return __ashmem_is_ashmem(fd, 0) >= 0;  in ashmem_valid()
333     android::base::unique_fd fd(syscall(__NR_memfd_create, name, MFD_ALLOW_SEALING));  in memfd_create_region()  local
335     if (fd == -1) {  in memfd_create_region()
340     if (ftruncate(fd, size) == -1) {  in memfd_create_region()
346         ALOGE("memfd_create(%s, %zd) success. fd=%d\n", name, size, fd.get());  in memfd_create_region()
348     return fd.release();  in memfd_create_region()
366     int fd = __ashmem_open();  in ashmem_create_region()  local
367     if (fd < 0) {  in ashmem_create_region()
368         return fd;  in ashmem_create_region()
375         ret = TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_SET_NAME, buf));  in ashmem_create_region()
381     ret = TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_SET_SIZE, size));  in ashmem_create_region()
386     return fd;  in ashmem_create_region()
390     close(fd);  in ashmem_create_region()
395 static int memfd_set_prot_region(int fd, int prot) {  in memfd_set_prot_region()  argument
401     if (fcntl(fd, F_ADD_SEALS, F_SEAL_FUTURE_WRITE) == -1) {  in memfd_set_prot_region()
402         ALOGE("memfd_set_prot_region(%d, %d): F_SEAL_FUTURE_WRITE seal failed: %s\n", fd, prot,  in memfd_set_prot_region()
410 int ashmem_set_prot_region(int fd, int prot)  in ashmem_set_prot_region()  argument
412     if (has_memfd_support() && !memfd_is_ashmem(fd)) {  in ashmem_set_prot_region()
413         return memfd_set_prot_region(fd, prot);  in ashmem_set_prot_region()
416     return __ashmem_check_failure(fd, TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_SET_PROT_MASK, prot)));  in ashmem_set_prot_region()
419 int ashmem_pin_region(int fd, size_t offset, size_t len)  in ashmem_pin_region()  argument
426     if (has_memfd_support() && !memfd_is_ashmem(fd)) {  in ashmem_pin_region()
432     return __ashmem_check_failure(fd, TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_PIN, &pin)));  in ashmem_pin_region()
435 int ashmem_unpin_region(int fd, size_t offset, size_t len)  in ashmem_unpin_region()  argument
442     if (has_memfd_support() && !memfd_is_ashmem(fd)) {  in ashmem_unpin_region()
448     return __ashmem_check_failure(fd, TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_UNPIN, &pin)));  in ashmem_unpin_region()
451 int ashmem_get_size_region(int fd)  in ashmem_get_size_region()  argument
453     if (has_memfd_support() && !memfd_is_ashmem(fd)) {  in ashmem_get_size_region()
456         if (fstat(fd, &sb) == -1) {  in ashmem_get_size_region()
457             ALOGE("ashmem_get_size_region(%d): fstat failed: %s\n", fd, strerror(errno));  in ashmem_get_size_region()
462             ALOGD("ashmem_get_size_region(%d): %d\n", fd, static_cast<int>(sb.st_size));  in ashmem_get_size_region()
468     return __ashmem_check_failure(fd, TEMP_FAILURE_RETRY(ioctl(fd, ASHMEM_GET_SIZE, NULL)));  in ashmem_get_size_region()