Update contrib/libs/liburing to 2.4

1 files changed, 277 insertions, 0 deletions

diff --git a/contrib/libs/liburing/test/poll-race-mshot.c b/contrib/libs/liburing/test/poll-race-mshot.c
new file mode 100644
index 00000000000..5b2755fab45
--- /dev/null
+++ b/contrib/libs/liburing/test/poll-race-mshot.c
@@ -0,0 +1,277 @@
+#include "../config-host.h"
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: check that racing wakeups don't re-issue a poll multishot,
+ *		this can leak ring provided buffers. also test if ring
+ *		provided buffers for regular receive can leak if we hit a
+ *		poll race.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <string.h>
+#include <sys/socket.h>
+
+#include "liburing.h"
+#include "helpers.h"
+
+#define NREQS		64
+#define BUF_SIZE	64
+
+static int no_buf_ring;
+
+struct data {
+	pthread_barrier_t barrier;
+	int fd;
+};
+
+static void *thread(void *data)
+{
+	struct data *d = data;
+	char buf[BUF_SIZE];
+	int ret, i, fd;
+
+	memset(buf, 0x5a, BUF_SIZE);
+	pthread_barrier_wait(&d->barrier);
+	fd = d->fd;
+	for (i = 0; i < NREQS; i++) {
+		ret = write(fd, buf, sizeof(buf));
+		if (ret != BUF_SIZE) {
+			if (ret < 0) {
+				perror("write");
+				printf("bad fd %d\n", fd);
+			} else
+				fprintf(stderr, "wrote short %d\n", ret);
+		}
+	}
+	return NULL;
+}
+
+static int test(struct io_uring *ring, struct data *d)
+{
+	struct io_uring_buf_ring *br;
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int fd[2], ret, i;
+	pthread_t t;
+	void *buf, *ptr;
+	void *ret2;
+
+	if (socketpair(PF_LOCAL, SOCK_STREAM, 0, fd) < 0) {
+		perror("socketpair");
+		return T_EXIT_FAIL;
+	}
+
+	d->fd = fd[1];
+
+	if (posix_memalign((void **) &buf, 16384, BUF_SIZE * NREQS))
+		return T_EXIT_FAIL;
+
+	br = io_uring_setup_buf_ring(ring, NREQS, 1, 0, &ret);
+	if (!br) {
+		if (ret == -EINVAL) {
+			no_buf_ring = 1;
+			return T_EXIT_SKIP;
+		}
+		fprintf(stderr, "buf ring reg %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	ptr = buf;
+	for (i = 0; i < NREQS; i++) {
+		io_uring_buf_ring_add(br, ptr, BUF_SIZE, i + 1,
+				io_uring_buf_ring_mask(NREQS), i);
+		ptr += BUF_SIZE;
+	}
+	io_uring_buf_ring_advance(br, NREQS);
+
+	pthread_create(&t, NULL, thread, d);
+
+	for (i = 0; i < NREQS; i++) {
+		sqe = io_uring_get_sqe(ring);
+		io_uring_prep_recv(sqe, fd[0], NULL, 0, 0);
+		sqe->flags |= IOSQE_BUFFER_SELECT;
+		sqe->buf_group = 1;
+	}
+
+	pthread_barrier_wait(&d->barrier);
+
+	ret = io_uring_submit(ring);
+	if (ret != NREQS) {
+		fprintf(stderr, "submit %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	i = 0;
+	do {
+		ret = io_uring_wait_cqe(ring, &cqe);
+		if (ret) {
+			fprintf(stderr, "cqe wait %d\n", ret);
+			return T_EXIT_FAIL;
+		}
+		i++;
+		if (cqe->res != BUF_SIZE) {
+			fprintf(stderr, "Bad cqe res %d\n", cqe->res);
+			break;
+		}
+		if (cqe->flags & IORING_CQE_F_BUFFER) {
+			int bid = cqe->flags >> 16;
+
+			if (bid > NREQS) {
+				fprintf(stderr, "Bad BID %d\n", bid);
+				return T_EXIT_FAIL;
+			}
+		} else {
+			fprintf(stderr, "No BID set!\n");
+			printf("ret=%d\n", cqe->res);
+			return T_EXIT_FAIL;
+		}
+		io_uring_cqe_seen(ring, cqe);
+		if (i > NREQS) {
+			fprintf(stderr, "Got too many requests?\n");
+			return T_EXIT_FAIL;
+		}
+	} while (i < NREQS);
+
+	pthread_join(t, &ret2);
+	free(buf);
+	io_uring_free_buf_ring(ring, br, NREQS, 1);
+	close(fd[0]);
+	close(fd[1]);
+	return T_EXIT_PASS;
+}
+
+static int test_mshot(struct io_uring *ring, struct data *d)
+{
+	struct io_uring_buf_ring *br;
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int fd[2], ret, i;
+	pthread_t t;
+	void *buf, *ptr;
+	void *ret2;
+
+	if (socketpair(PF_LOCAL, SOCK_STREAM, 0, fd) < 0) {
+		perror("socketpair");
+		return T_EXIT_FAIL;
+	}
+
+	d->fd = fd[1];
+
+	if (posix_memalign((void *) &buf, 16384, BUF_SIZE * NREQS))
+		return T_EXIT_FAIL;
+
+	br = io_uring_setup_buf_ring(ring, NREQS, 1, 0, &ret);
+	if (!br) {
+		fprintf(stderr, "buf ring reg %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	ptr = buf;
+	for (i = 0; i < NREQS; i++) {
+		io_uring_buf_ring_add(br, ptr, BUF_SIZE, i + 1,
+				io_uring_buf_ring_mask(NREQS), i);
+		ptr += BUF_SIZE;
+	}
+	io_uring_buf_ring_advance(br, NREQS);
+
+	pthread_create(&t, NULL, thread, d);
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_recv_multishot(sqe, fd[0], NULL, 0, 0);
+	sqe->flags |= IOSQE_BUFFER_SELECT;
+	sqe->buf_group = 1;
+
+	pthread_barrier_wait(&d->barrier);
+
+	ret = io_uring_submit(ring);
+	if (ret != 1) {
+		fprintf(stderr, "submit %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	i = 0;
+	do {
+		ret = io_uring_wait_cqe(ring, &cqe);
+		if (ret) {
+			fprintf(stderr, "cqe wait %d\n", ret);
+			return T_EXIT_FAIL;
+		}
+		i++;
+		if (!(cqe->flags & IORING_CQE_F_MORE))
+			break;
+		if (cqe->res != BUF_SIZE) {
+			fprintf(stderr, "Bad cqe res %d\n", cqe->res);
+			break;
+		}
+		if (cqe->flags & IORING_CQE_F_BUFFER) {
+			int bid = cqe->flags >> 16;
+
+			if (bid > NREQS) {
+				fprintf(stderr, "Bad BID %d\n", bid);
+				return T_EXIT_FAIL;
+			}
+		} else {
+			fprintf(stderr, "No BID set!\n");
+			printf("ret=%d\n", cqe->res);
+			return T_EXIT_FAIL;
+		}
+		io_uring_cqe_seen(ring, cqe);
+		if (i > NREQS) {
+			fprintf(stderr, "Got too many requests?\n");
+			return T_EXIT_FAIL;
+		}
+	} while (1);
+
+	if (i != NREQS + 1) {
+		fprintf(stderr, "Only got %d requests\n", i);
+		return T_EXIT_FAIL;
+	}
+
+	pthread_join(t, &ret2);
+	io_uring_free_buf_ring(ring, br, NREQS, 1);
+	free(buf);
+	close(fd[0]);
+	close(fd[1]);
+	return T_EXIT_PASS;
+}
+
+int main(int argc, char *argv[])
+{
+	struct io_uring ring;
+	struct data d;
+	int i, ret;
+
+	if (argc > 1)
+		return T_EXIT_SKIP;
+
+	pthread_barrier_init(&d.barrier, NULL, 2);
+
+	for (i = 0; i < 1000; i++) {
+		io_uring_queue_init(NREQS, &ring, 0);
+		ret = test(&ring, &d);
+		if (ret != T_EXIT_PASS) {
+			if (no_buf_ring)
+				break;
+			fprintf(stderr, "Test failed loop %d\n", i);
+			return T_EXIT_FAIL;
+		}
+		io_uring_queue_exit(&ring);
+	}
+
+	if (no_buf_ring)
+		return T_EXIT_SKIP;
+
+	for (i = 0; i < 1000; i++) {
+		io_uring_queue_init(NREQS, &ring, 0);
+		ret = test_mshot(&ring, &d);
+		if (ret != T_EXIT_PASS) {
+			fprintf(stderr, "Test mshot failed loop %d\n", i);
+			return T_EXIT_FAIL;
+		}
+		io_uring_queue_exit(&ring);
+	}
+
+	return T_EXIT_PASS;
+}