Function test_sync_file_range

test/fsync.c:146–188

#define FILE_SIZE 1024

static int test_sync_file_range(struct io_uring *ring)
{
	int ret, fd, save_errno;
	struct io_uring_sqe *sqe;
	struct io_uring_cqe *cqe;

	t_create_file(".sync_file_range", FILE_SIZE);

	fd = open(".sync_file_range", O_RDWR);
	save_errno = errno;
	unlink(".sync_file_range");
	errno = save_errno;
	if (fd < 0) {
		perror("file open");
		return 1;
	}

	sqe = io_uring_get_sqe(ring);
	if (!sqe) {
		fprintf(stderr, "sqe get failed\n");
		return 1;
	}
	io_uring_prep_sync_file_range(sqe, fd, 0, 0, 0);
	sqe->user_data = 1;

	ret = io_uring_submit(ring);
	if (ret != 1) {
		fprintf(stderr, "submit failed: %d\n", ret);
		return 1;
	}
	ret = io_uring_wait_cqe(ring, &cqe);
	if (ret) {
		fprintf(stderr, "wait_cqe failed: %d\n", ret);
		return 1;
	}
	if (cqe->res) {
		fprintf(stderr, "sfr failed: %d\n", cqe->res);
		return 1;
	}

	io_uring_cqe_seen(ring, cqe);
	return 0;
}

int main(int argc, char *argv[])
{