1 files changed, 93 insertions, 0 deletions
diff --git a/test/drop-submit.c b/test/drop-submit.c
new file mode 100644
index 0000000..7b15f26
--- /dev/null
+++ b/test/drop-submit.c
@@ -0,0 +1,93 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: test IORING_SETUP_SUBMIT_ALL
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include "liburing.h"
+
+static int test(struct io_uring *ring, int expect_drops)
+{
+	struct io_uring_sqe *sqe;
+	char buf[32];
+	int ret, i;
+
+	for (i = 0; i < 4; i++) {
+		sqe = io_uring_get_sqe(ring);
+		if (!sqe) {
+			fprintf(stderr, "get sqe failed\n");
+			goto err;
+		}
+
+		io_uring_prep_nop(sqe);
+	}
+
+	/* prep two invalid reads, these will fail */
+	for (i = 0; i < 2; i++) {
+		sqe = io_uring_get_sqe(ring);
+		if (!sqe) {
+			fprintf(stderr, "get sqe failed\n");
+			goto err;
+		}
+
+		io_uring_prep_read(sqe, 128, buf, sizeof(buf), 0);
+		sqe->ioprio = (short) -1;
+	}
+
+
+	ret = io_uring_submit(ring);
+	if (expect_drops) {
+		if (ret != 5) {
+			fprintf(stderr, "drops submit failed: %d\n", ret);
+			goto err;
+		}
+	} else {
+		if (ret != 6) {
+			fprintf(stderr, "no drops submit failed: %d\n", ret);
+			goto err;
+		}
+	}
+
+	return 0;
+err:
+	return 1;
+}
+
+int main(int argc, char *argv[])
+{
+	struct io_uring ring;
+	int ret;
+
+	if (argc > 1)
+		return 0;
+
+	ret = io_uring_queue_init(8, &ring, IORING_SETUP_SUBMIT_ALL);
+	if (ret)
+		return 0;
+
+	ret = test(&ring, 0);
+	if (ret) {
+		fprintf(stderr, "test no drops failed\n");
+		return ret;
+	}
+
+	io_uring_queue_exit(&ring);
+
+	ret = io_uring_queue_init(8, &ring, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed\n");
+		return 0;
+	}
+
+	ret = test(&ring, 1);
+	if (ret) {
+		fprintf(stderr, "test drops failed\n");
+		return ret;
+	}
+
+	return 0;
+}