[PATCH v1] liburing: add test for stable statx api

[Stefan Roesch <shr@fb.com>]

This adds a test for the statx api to verify that io-uring statx api is
stable.

Signed-off-by: Stefan Roesch <shr@fb.com>
---
 test/statx.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)

diff --git a/test/statx.c b/test/statx.c
index c0f9e9c..61268d4 100644
--- a/test/statx.c
+++ b/test/statx.c
@@ -77,6 +77,61 @@ err:
 	return -1;
 }
 
+static int test_statx_stable(struct io_uring *ring, const char *path)
+{
+	struct io_uring_cqe *cqe;
+	struct io_uring_sqe *sqe;
+	struct statx x1, x2;
+	char path1[PATH_MAX];
+	char path2[PATH_MAX];
+	int ret = -1;
+
+	strcpy(path2, path);
+	strcpy(path1, path);
+
+	sqe = io_uring_get_sqe(ring);
+	if (!sqe) {
+		fprintf(stderr, "get sqe failed\n");
+		goto err;
+	}
+
+	io_uring_prep_statx(sqe, -1, path1, 0, STATX_ALL, &x1);
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		goto err;
+	}
+	memset(path1, 0, sizeof(path1));
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret < 0) {
+		fprintf(stderr, "wait completion %d\n", ret);
+		goto err;
+	}
+
+	ret = cqe->res;
+	io_uring_cqe_seen(ring, cqe);
+	if (ret) {
+		fprintf(stderr, "statx res = %d\n", ret);
+		goto err;
+	}
+
+	ret = do_statx(-1, path2, 0, STATX_ALL, &x2);
+	if (ret < 0)
+		return statx_syscall_supported();
+
+	if (memcmp(&x1, &x2, sizeof(x1))) {
+		fprintf(stderr, "Miscompare between io_uring and statx\n");
+		goto err;
+	}
+
+	ret = 0;
+
+err:
+	return ret;
+}
+
 static int test_statx_fd(struct io_uring *ring, const char *path)
 {
 	struct io_uring_cqe *cqe;
@@ -156,6 +211,16 @@ int main(int argc, char *argv[])
 		goto err;
 	}
 
+	ret = test_statx_stable(&ring, fname);
+	if (ret) {
+		if (ret == -EINVAL) {
+			fprintf(stdout, "statx not supported, skipping\n");
+			goto done;
+		}
+		fprintf(stderr, "test_statx_loop failed: %d\n", ret);
+		goto err;
+	}
+
 	ret = test_statx_fd(&ring, fname);
 	if (ret) {
 		fprintf(stderr, "test_statx_fd failed: %d\n", ret);

base-commit: d9b0a424471f5c584f1d3f370e1746925733c01a
-- 
2.30.2