1 files changed, 98 insertions, 0 deletions
diff --git a/test/orc.c b/test/orc.c
new file mode 100644
index 0000000..eda5b7a
--- /dev/null
+++ b/test/orc.c
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: open+read+close link sequence with fd passing
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "liburing.h"
+
+#ifndef O_SPECIFIC_FD
+#define O_SPECIFIC_FD	01000000000
+#endif
+
+#define USE_FD	89
+
+static int test_orc(struct io_uring *ring, const char *fname)
+{
+	struct io_uring_cqe *cqe;
+	struct io_uring_sqe *sqe;
+	struct open_how how;
+	char buf[32];
+	int ret, i;
+	int nr = 0;
+
+	how.flags = O_RDONLY | O_SPECIFIC_FD;
+	how.mode = 0;
+	how.resolve = 0;
+	how.fd = USE_FD;
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_openat2(sqe, AT_FDCWD, fname, &how);
+	sqe->flags |= IOSQE_IO_LINK;
+	sqe->user_data = IORING_OP_OPENAT2;
+	nr++;
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_read(sqe, USE_FD, buf, sizeof(buf), 0);
+	sqe->flags |= IOSQE_IO_LINK;
+	sqe->user_data = IORING_OP_READ;
+	nr++;
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_close(sqe, USE_FD);
+	sqe->user_data = IORING_OP_CLOSE;
+	nr++;
+
+	ret = io_uring_submit(ring);
+	if (ret != nr) {
+		fprintf(stderr, "sqe submit failed: %d\n", ret);
+		goto err;
+	}
+
+	for (i = 0; i < nr; i++) {
+		ret = io_uring_wait_cqe(ring, &cqe);
+		if (ret < 0) {
+			fprintf(stderr, "wait completion %d\n", ret);
+			goto err;
+		}
+
+		printf("%d: op=%u, res=%d\n", i, (unsigned) cqe->user_data, cqe->res);
+		if (cqe->user_data == IORING_OP_OPENAT2 && cqe->res != USE_FD)
+			printf("openat2 got fd %d, wanted %d\n", cqe->res, USE_FD);
+		io_uring_cqe_seen(ring, cqe);
+	}
+
+	return 0;
+err:
+	return 1;
+}
+
+int main(int argc, char *argv[])
+{
+	struct io_uring ring;
+	int ret;
+
+	if (argc < 2) {
+		fprintf(stderr, "%s: <file>\n", argv[0]);
+		return 1;
+	}
+
+	ret = io_uring_queue_init(8, &ring, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed: %d\n", ret);
+		return 1;
+	}
+
+	ret = test_orc(&ring, argv[1]);
+	if (ret) {
+		fprintf(stderr, "test_orc failed\n");
+		return ret;
+	}
+
+	return 0;
+}