Add cross-link

1 files changed, 262 insertions, 0 deletions

diff --git a/contrib/libs/liburing/test/open-close.c b/contrib/libs/liburing/test/open-close.c
new file mode 100644
index 0000000000..6b236e463a
--- /dev/null
+++ b/contrib/libs/liburing/test/open-close.c
@@ -0,0 +1,262 @@
+#include "../config-host.h"
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: run various openat(2) tests
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <assert.h>
+
+#include "helpers.h"
+#include "liburing.h"
+
+static int submit_wait(struct io_uring *ring)
+{
+	struct io_uring_cqe *cqe;
+	int ret;
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		return 1;
+	}
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret < 0) {
+		fprintf(stderr, "wait completion %d\n", ret);
+		return 1;
+	}
+
+	ret = cqe->res;
+	io_uring_cqe_seen(ring, cqe);
+	return ret;
+}
+
+static inline int try_close(struct io_uring *ring, int fd, int slot)
+{
+	struct io_uring_sqe *sqe;
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_close(sqe, fd);
+	__io_uring_set_target_fixed_file(sqe, slot);
+	return submit_wait(ring);
+}
+
+static int test_close_fixed(void)
+{
+	struct io_uring ring;
+	struct io_uring_sqe *sqe;
+	int ret, fds[2];
+	char buf[1];
+
+	ret = io_uring_queue_init(8, &ring, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed\n");
+		return -1;
+	}
+	if (pipe(fds)) {
+		perror("pipe");
+		return -1;
+	}
+
+	ret = try_close(&ring, 0, 0);
+	if (ret == -EINVAL) {
+		fprintf(stderr, "close for fixed files is not supported\n");
+		return 0;
+	} else if (ret != -ENXIO) {
+		fprintf(stderr, "no table failed %i\n", ret);
+		return -1;
+	}
+
+	ret = try_close(&ring, 1, 0);
+	if (ret != -EINVAL) {
+		fprintf(stderr, "set fd failed %i\n", ret);
+		return -1;
+	}
+
+	ret = io_uring_register_files(&ring, fds, 2);
+	if (ret) {
+		fprintf(stderr, "file_register: %d\n", ret);
+		return ret;
+	}
+
+	ret = try_close(&ring, 0, 2);
+	if (ret != -EINVAL) {
+		fprintf(stderr, "out of table failed %i\n", ret);
+		return -1;
+	}
+
+	ret = try_close(&ring, 0, 0);
+	if (ret != 0) {
+		fprintf(stderr, "close failed %i\n", ret);
+		return -1;
+	}
+
+	sqe = io_uring_get_sqe(&ring);
+	io_uring_prep_read(sqe, 0, buf, sizeof(buf), 0);
+	sqe->flags |= IOSQE_FIXED_FILE;
+	ret = submit_wait(&ring);
+	if (ret != -EBADF) {
+		fprintf(stderr, "read failed %i\n", ret);
+		return -1;
+	}
+
+	ret = try_close(&ring, 0, 1);
+	if (ret != 0) {
+		fprintf(stderr, "close 2 failed %i\n", ret);
+		return -1;
+	}
+
+	ret = try_close(&ring, 0, 0);
+	if (ret != -EBADF) {
+		fprintf(stderr, "empty slot failed %i\n", ret);
+		return -1;
+	}
+
+	close(fds[0]);
+	close(fds[1]);
+	io_uring_queue_exit(&ring);
+	return 0;
+}
+
+static int test_close(struct io_uring *ring, int fd, int is_ring_fd)
+{
+	struct io_uring_cqe *cqe;
+	struct io_uring_sqe *sqe;
+	int ret;
+
+	sqe = io_uring_get_sqe(ring);
+	if (!sqe) {
+		fprintf(stderr, "get sqe failed\n");
+		goto err;
+	}
+	io_uring_prep_close(sqe, fd);
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		goto err;
+	}
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret < 0) {
+		if (!(is_ring_fd && ret == -EBADF)) {
+			fprintf(stderr, "wait completion %d\n", ret);
+			goto err;
+		}
+		return ret;
+	}
+	ret = cqe->res;
+	io_uring_cqe_seen(ring, cqe);
+	return ret;
+err:
+	return -1;
+}
+
+static int test_openat(struct io_uring *ring, const char *path, int dfd)
+{
+	struct io_uring_cqe *cqe;
+	struct io_uring_sqe *sqe;
+	int ret;
+
+	sqe = io_uring_get_sqe(ring);
+	if (!sqe) {
+		fprintf(stderr, "get sqe failed\n");
+		goto err;
+	}
+	io_uring_prep_openat(sqe, dfd, path, O_RDONLY, 0);
+
+	ret = io_uring_submit(ring);
+	if (ret <= 0) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		goto err;
+	}
+
+	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);
+	return ret;
+err:
+	return -1;
+}
+
+int main(int argc, char *argv[])
+{
+	struct io_uring ring;
+	const char *path, *path_rel;
+	int ret, do_unlink;
+
+	ret = io_uring_queue_init(8, &ring, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed\n");
+		return 1;
+	}
+
+	if (argc > 1) {
+		path = "/tmp/.open.close";
+		path_rel = argv[1];
+		do_unlink = 0;
+	} else {
+		path = "/tmp/.open.close";
+		path_rel = ".open.close";
+		do_unlink = 1;
+	}
+
+	t_create_file(path, 4096);
+
+	if (do_unlink)
+		t_create_file(path_rel, 4096);
+
+	ret = test_openat(&ring, path, -1);
+	if (ret < 0) {
+		if (ret == -EINVAL) {
+			fprintf(stdout, "Open not supported, skipping\n");
+			goto done;
+		}
+		fprintf(stderr, "test_openat absolute failed: %d\n", ret);
+		goto err;
+	}
+
+	ret = test_openat(&ring, path_rel, AT_FDCWD);
+	if (ret < 0) {
+		fprintf(stderr, "test_openat relative failed: %d\n", ret);
+		goto err;
+	}
+
+	ret = test_close(&ring, ret, 0);
+	if (ret) {
+		fprintf(stderr, "test_close normal failed\n");
+		goto err;
+	}
+
+	ret = test_close(&ring, ring.ring_fd, 1);
+	if (ret != -EBADF) {
+		fprintf(stderr, "test_close ring_fd failed\n");
+		goto err;
+	}
+
+	ret = test_close_fixed();
+	if (ret) {
+		fprintf(stderr, "test_close_fixed failed\n");
+		goto err;
+	}
+
+done:
+	unlink(path);
+	if (do_unlink)
+		unlink(path_rel);
+	return 0;
+err:
+	unlink(path);
+	if (do_unlink)
+		unlink(path_rel);
+	return 1;
+}