Add cross-link

1 files changed, 91 insertions, 0 deletions

diff --git a/contrib/libs/liburing/test/fixed-link.c b/contrib/libs/liburing/test/fixed-link.c
new file mode 100644
index 0000000000..3e9eb8c4f1
--- /dev/null
+++ b/contrib/libs/liburing/test/fixed-link.c
@@ -0,0 +1,91 @@
+#include "../config-host.h"
+/* SPDX-License-Identifier: MIT */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/types.h>
+
+#include "helpers.h"
+#include "liburing.h"
+
+#define IOVECS_LEN 2
+
+int main(int argc, char *argv[])
+{
+	struct iovec iovecs[IOVECS_LEN];
+	struct io_uring ring;
+	int i, fd, ret;
+
+	if (argc > 1)
+		return T_EXIT_SKIP;
+
+	fd = open("/dev/zero", O_RDONLY);
+	if (fd < 0) {
+		fprintf(stderr, "Failed to open /dev/zero\n");
+		return T_EXIT_FAIL;
+	}
+
+	if (io_uring_queue_init(32, &ring, 0) < 0) {
+		fprintf(stderr, "Failed to init io_uring\n");
+		close(fd);
+		return T_EXIT_FAIL;
+	}
+
+	for (i = 0; i < IOVECS_LEN; ++i) {
+		iovecs[i].iov_base = t_malloc(64);
+		iovecs[i].iov_len = 64;
+	};
+
+	ret = io_uring_register_buffers(&ring, iovecs, IOVECS_LEN);
+	if (ret) {
+		fprintf(stderr, "Failed to register buffers\n");
+		return T_EXIT_FAIL;
+	}
+
+	for (i = 0; i < IOVECS_LEN; ++i) {
+		struct io_uring_sqe *sqe = io_uring_get_sqe(&ring);
+		const char *str = "#include <errno.h>";
+
+		iovecs[i].iov_len = strlen(str);
+		io_uring_prep_read_fixed(sqe, fd, iovecs[i].iov_base, strlen(str), 0, i);
+		if (i == 0)
+			io_uring_sqe_set_flags(sqe, IOSQE_IO_LINK);
+		io_uring_sqe_set_data(sqe, (void *)str);
+	}
+
+	ret = io_uring_submit_and_wait(&ring, IOVECS_LEN);
+	if (ret < 0) {
+		fprintf(stderr, "Failed to submit IO\n");
+		return T_EXIT_FAIL;
+	} else if (ret < 2) {
+		fprintf(stderr, "Submitted %d, wanted %d\n", ret, IOVECS_LEN);
+		return T_EXIT_FAIL;
+	}
+
+	for (i = 0; i < IOVECS_LEN; i++) {
+		struct io_uring_cqe *cqe;
+
+		ret = io_uring_wait_cqe(&ring, &cqe);
+		if (ret) {
+			fprintf(stderr, "wait_cqe=%d\n", ret);
+			return T_EXIT_FAIL;
+		}
+		if (cqe->res != iovecs[i].iov_len) {
+			fprintf(stderr, "read: wanted %ld, got %d\n",
+					(long) iovecs[i].iov_len, cqe->res);
+			return T_EXIT_FAIL;
+		}
+		io_uring_cqe_seen(&ring, cqe);
+	}
+
+	close(fd);
+	io_uring_queue_exit(&ring);
+
+	for (i = 0; i < IOVECS_LEN; ++i)
+		free(iovecs[i].iov_base);
+
+	return T_EXIT_PASS;
+}