Update contrib/libs/liburing to 2.6

3b51a9fb14de805208d11f1c077c78bb5d487e0f

1 files changed, 501 insertions, 0 deletions

diff --git a/contrib/libs/liburing/test/fd-install.c b/contrib/libs/liburing/test/fd-install.c
new file mode 100644
index 0000000000..222eb1de03
--- /dev/null
+++ b/contrib/libs/liburing/test/fd-install.c
@@ -0,0 +1,501 @@
+#include "../config-host.h"
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: test installing a direct descriptor into the regular
+ *		file table
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+
+#include "liburing.h"
+#include "helpers.h"
+
+static int no_fd_install;
+
+/* test that O_CLOEXEC is accepted, and others are not */
+static int test_flags(struct io_uring *ring, int async)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret, fds[2], fd;
+
+	if (pipe(fds) < 0) {
+		perror("pipe");
+		return T_EXIT_FAIL;
+	}
+
+	ret = io_uring_register_files(ring, &fds[0], 1);
+	if (ret) {
+		fprintf(stderr, "failed register files %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	/* check that setting an invalid flag fails */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, 0, 1U << 17);
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res != -EINVAL) {
+		fprintf(stderr, "unexpected cqe res %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	io_uring_cqe_seen(ring, cqe);
+
+	/* check that IORING_FIXED_FD_NO_CLOEXEC is accepted */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, 0, IORING_FIXED_FD_NO_CLOEXEC);
+	if (async)
+		sqe->flags |= IOSQE_ASYNC;
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res < 0) {
+		fprintf(stderr, "unexpected cqe res %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	fd = cqe->res;
+	io_uring_cqe_seen(ring, cqe);
+
+	close(fds[0]);
+	close(fds[1]);
+	close(fd);
+	io_uring_unregister_files(ring);
+	
+	return T_EXIT_PASS;
+}
+
+static int test_linked(struct io_uring *ring)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret, fds[2], fd, i;
+
+	if (pipe(fds) < 0) {
+		perror("pipe");
+		return T_EXIT_FAIL;
+	}
+
+	ret = io_uring_register_files(ring, &fds[0], 1);
+	if (ret) {
+		fprintf(stderr, "failed register files %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_nop(sqe);
+	sqe->flags |= IOSQE_IO_LINK;
+	sqe->user_data = 1;
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, 0, 0);
+	sqe->user_data = 2;
+
+	ret = io_uring_submit(ring);
+	if (ret != 2) {
+		fprintf(stderr, "submit: %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	fd = -1;
+	for (i = 0; i < 2; i++) {
+		ret = io_uring_wait_cqe(ring, &cqe);
+		if (ret) {
+			fprintf(stderr, "wait cqe %d\n", ret);
+			return T_EXIT_FAIL;
+		}
+		if (cqe->res < 0) {
+			fprintf(stderr, "unexpected cqe res %d\n", cqe->res);
+			return T_EXIT_FAIL;
+		}
+		if (cqe->user_data == 2)
+			fd = cqe->res;
+		io_uring_cqe_seen(ring, cqe);
+	}
+
+	close(fds[0]);
+	close(fds[1]);
+	if (fd != -1)
+		close(fd);
+	io_uring_unregister_files(ring);
+	return T_EXIT_PASS;
+}
+
+/* test not setting IOSQE_FIXED_FILE */
+static int test_not_fixed(struct io_uring *ring)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret, fds[2];
+
+	if (pipe(fds) < 0) {
+		perror("pipe");
+		return T_EXIT_FAIL;
+	}
+
+	ret = io_uring_register_files(ring, &fds[0], 1);
+	if (ret) {
+		fprintf(stderr, "failed register files %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, 0, 0);
+	sqe->flags &= ~IOSQE_FIXED_FILE;
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res != -EBADF) {
+		fprintf(stderr, "unexpected cqe res %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+
+	io_uring_cqe_seen(ring, cqe);
+
+	close(fds[0]);
+	close(fds[1]);
+	io_uring_unregister_files(ring);
+	
+	return T_EXIT_PASS;
+}
+
+/* test invalid direct descriptor indexes */
+static int test_bad_fd(struct io_uring *ring, int some_fd)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret;
+
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, some_fd, 0);
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res != -EBADF) {
+		fprintf(stderr, "unexpected cqe res %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+
+	io_uring_cqe_seen(ring, cqe);
+	return T_EXIT_PASS;
+}
+
+/* test basic functionality of shifting a direct descriptor to a normal file */
+static int test_working(struct io_uring *ring)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int ret, fds[2];
+	char buf[32];
+
+	if (pipe(fds) < 0) {
+		perror("pipe");
+		return T_EXIT_FAIL;
+	}
+
+	/* register read side */
+	ret = io_uring_register_files(ring, &fds[0], 1);
+	if (ret) {
+		fprintf(stderr, "failed register files %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	/* close normal descriptor */
+	close(fds[0]);
+
+	/* normal read should fail */
+	ret = read(fds[0], buf, 1);
+	if (ret != -1) {
+		fprintf(stderr, "unexpected read ret %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (errno != EBADF) {
+		fprintf(stderr, "unexpected read failure %d\n", errno);
+		return T_EXIT_FAIL;
+	}
+
+	/* verify we can read the data */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_read(sqe, 0, buf, sizeof(buf), 0);
+	sqe->flags |= IOSQE_FIXED_FILE;
+	io_uring_submit(ring);
+
+	/* put some data in the pipe */
+	ret = write(fds[1], "Hello", 5);
+	if (ret < 0) {
+		perror("write");
+		return T_EXIT_FAIL;
+	} else if (ret != 5) {
+		fprintf(stderr, "short write %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res != 5) {
+		fprintf(stderr, "weird pipe read ret %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	io_uring_cqe_seen(ring, cqe);
+
+	/* fixed pipe read worked, now re-install as a regular fd */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, 0, 0);
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res == -EINVAL) {
+		no_fd_install = 1;
+		return T_EXIT_SKIP;
+	}
+	if (cqe->res < 0) {
+		fprintf(stderr, "failed install fd: %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	/* stash new pipe read side fd in old spot */
+	fds[0] = cqe->res;
+	io_uring_cqe_seen(ring, cqe);
+
+	ret = write(fds[1], "Hello", 5);
+	if (ret < 0) {
+		perror("write");
+		return T_EXIT_FAIL;
+	} else if (ret != 5) {
+		fprintf(stderr, "short write %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	/* normal pipe read should now work with new fd */
+	ret = read(fds[0], buf, sizeof(buf));
+	if (ret != 5) {
+		fprintf(stderr, "unexpected read ret %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	/* close fixed file */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_close_direct(sqe, 0);
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res) {
+		fprintf(stderr, "close fixed fd %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	io_uring_cqe_seen(ring, cqe);
+
+	ret = write(fds[1], "Hello", 5);
+	if (ret < 0) {
+		perror("write");
+		return T_EXIT_FAIL;
+	} else if (ret != 5) {
+		fprintf(stderr, "short write %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	/* normal pipe read should still work with new fd */
+	ret = read(fds[0], buf, sizeof(buf));
+	if (ret != 5) {
+		fprintf(stderr, "unexpected read ret %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	/* fixed fd pipe read should now fail */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_read(sqe, 0, buf, sizeof(buf), 0);
+	sqe->flags = IOSQE_FIXED_FILE;
+	io_uring_submit(ring);
+
+	/* put some data in the pipe */
+	ret = write(fds[1], "Hello", 5);
+	if (ret < 0) {
+		perror("write");
+		return T_EXIT_FAIL;
+	} else if (ret != 5) {
+		fprintf(stderr, "short write %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res != -EBADF) {
+		fprintf(stderr, "weird pipe read ret %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	io_uring_cqe_seen(ring, cqe);
+
+	close(fds[0]);
+	close(fds[1]);
+	io_uring_unregister_files(ring);
+	return T_EXIT_PASS;
+}
+
+static int test_creds(struct io_uring *ring, int async)
+{
+	struct io_uring_sqe *sqe;
+	struct io_uring_cqe *cqe;
+	int cred_id, ret, fds[2];
+
+	if (pipe(fds) < 0) {
+		perror("pipe");
+		return T_EXIT_FAIL;
+	}
+
+	ret = io_uring_register_files(ring, &fds[0], 1);
+	if (ret) {
+		fprintf(stderr, "failed register files %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	cred_id = io_uring_register_personality(ring);
+	if (cred_id < 0) {
+		fprintf(stderr, "Failed registering creds: %d\n", cred_id);
+		return T_EXIT_FAIL;
+	}
+
+	/* check that asking for creds fails */
+	sqe = io_uring_get_sqe(ring);
+	io_uring_prep_fixed_fd_install(sqe, 0, 0);
+	if (async)
+		sqe->flags |= IOSQE_ASYNC;
+	sqe->personality = cred_id;
+	io_uring_submit(ring);
+
+	ret = io_uring_wait_cqe(ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res > 0) {
+		fprintf(stderr, "install succeeded with creds\n");
+		return T_EXIT_FAIL;
+	}
+	if (cqe->res != -EPERM) {
+		fprintf(stderr, "unexpected cqe res %d\n", cqe->res);
+		return T_EXIT_FAIL;
+	}
+	io_uring_cqe_seen(ring, cqe);
+
+	close(fds[0]);
+	close(fds[1]);
+	io_uring_unregister_files(ring);
+	io_uring_unregister_personality(ring, cred_id);
+	return T_EXIT_PASS;
+}
+
+int main(int argc, char *argv[])
+{
+	struct io_uring ring;
+	int ret;
+
+	if (argc > 1)
+		return T_EXIT_SKIP;
+
+	ret = io_uring_queue_init(4, &ring, 0);
+	if (ret) {
+		fprintf(stderr, "ring setup failed: %d\n", ret);
+		return T_EXIT_FAIL;
+	}
+
+	ret = test_working(&ring);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_working failed\n");
+		return ret;
+	}
+	if (no_fd_install)
+		return T_EXIT_SKIP;
+
+	ret = test_bad_fd(&ring, 0);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_bad_fd 0 failed\n");
+		return ret;
+	}
+
+	ret = test_bad_fd(&ring, 500);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_bad_fd 500 failed\n");
+		return ret;
+	}
+	
+	ret = test_not_fixed(&ring);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_not_fixed failed\n");
+		return ret;
+	}
+
+	ret = test_flags(&ring, 0);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_flags 0 failed\n");
+		return ret;
+	}
+
+	ret = test_flags(&ring, 1);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_flags 1 failed\n");
+		return ret;
+	}
+
+	ret = test_creds(&ring, 0);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_creds 0 failed\n");
+		return ret;
+	}
+
+	ret = test_creds(&ring, 1);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_creds 1 failed\n");
+		return ret;
+	}
+
+	ret = test_linked(&ring);
+	if (ret != T_EXIT_PASS) {
+		if (ret == T_EXIT_FAIL)
+			fprintf(stderr, "test_linked failed\n");
+		return ret;
+	}
+	
+	return T_EXIT_PASS;
+}