The branch main has been updated by glebius: URL: https://cgit.FreeBSD.org/src/commit/?id=8d3d9ca8bd3db284f6ae671f1e816ba2822f0988
commit 8d3d9ca8bd3db284f6ae671f1e816ba2822f0988 Author: Gleb Smirnoff <[email protected]> AuthorDate: 2024-03-23 05:44:16 +0000 Commit: Gleb Smirnoff <[email protected]> CommitDate: 2024-03-23 05:44:16 +0000 tests/netinet: add UDP socket I/O tests Start a file that would collect tests for I/O functionality of a UDP socket, targeted on how a socket interacts with userland rather than with wire side of the protocol. First version tests that MSG_TRUNC and MSG_PEEK are working correctly. --- tests/sys/netinet/Makefile | 3 +- tests/sys/netinet/udp_io.c | 139 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 141 insertions(+), 1 deletion(-) diff --git a/tests/sys/netinet/Makefile b/tests/sys/netinet/Makefile index b86457c2d723..fb3281028aff 100644 --- a/tests/sys/netinet/Makefile +++ b/tests/sys/netinet/Makefile @@ -12,7 +12,8 @@ ATF_TESTS_C= ip_reass_test \ socket_afinet \ tcp_connect_port_test \ tcp_implied_connect \ - tcp_md5_getsockopt + tcp_md5_getsockopt \ + udp_io ATF_TESTS_SH= arp \ carp \ diff --git a/tests/sys/netinet/udp_io.c b/tests/sys/netinet/udp_io.c new file mode 100644 index 000000000000..6e0c4d9fe6d0 --- /dev/null +++ b/tests/sys/netinet/udp_io.c @@ -0,0 +1,139 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024 Gleb Smirnoff <[email protected]> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/socket.h> +#include <netinet/in.h> +#include <errno.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <atf-c.h> + +/* + * Create a pair of UDP sockets. The first one is bound to a local + * address and the second one is connected to it. + */ +static void +udp_socketpair(int *s) +{ + struct sockaddr_in sin = { + .sin_family = AF_INET, + .sin_len = sizeof(sin), + }; + socklen_t slen = sizeof(sin); + int b, c; + + ATF_REQUIRE((b = socket(PF_INET, SOCK_DGRAM, 0)) > 0); + ATF_REQUIRE((c = socket(PF_INET, SOCK_DGRAM, 0)) > 0); + ATF_REQUIRE(bind(b, (struct sockaddr *)&sin, sizeof(sin)) == 0); + ATF_REQUIRE(getsockname(b, (struct sockaddr *)&sin, &slen) == 0); + ATF_REQUIRE(connect(c, (struct sockaddr *)&sin, sizeof(sin)) == 0); + + s[0] = b; + s[1] = c; +} + +/* + * Check MSG_TRUNC. + */ +ATF_TC_WITHOUT_HEAD(trunc); +ATF_TC_BODY(trunc, tc) +{ + char sbuf[] = "Hello, peer!", rbuf[sizeof(sbuf)]; + struct iovec iov = { + .iov_base = sbuf, + .iov_len = sizeof(sbuf), + }; + struct msghdr msg = { + .msg_iov = &iov, + .msg_iovlen = 1, + }; + int s[2]; + u_int n; + + udp_socketpair(s); + + ATF_REQUIRE(sendmsg(s[1], &msg, 0) == sizeof(sbuf)); + n = (arc4random() % (sizeof(sbuf) - 1)) + 1; + iov.iov_base = rbuf; + iov.iov_len = n; + ATF_REQUIRE(recvmsg(s[0], &msg, 0) == n); + ATF_REQUIRE(msg.msg_flags == MSG_TRUNC); + ATF_REQUIRE(strncmp(sbuf, rbuf, n) == 0); + iov.iov_len = sizeof(rbuf); + ATF_REQUIRE(recvmsg(s[0], &msg, MSG_DONTWAIT) == -1); + ATF_REQUIRE(errno == EAGAIN); + + close(s[0]); + close(s[1]); +} + +/* + * Check MSG_PEEK. + */ +ATF_TC_WITHOUT_HEAD(peek); +ATF_TC_BODY(peek, tc) +{ + char sbuf[] = "Hello, peer!", rbuf[sizeof(sbuf)]; + struct iovec iov = { + .iov_base = sbuf, + .iov_len = sizeof(sbuf), + }; + struct msghdr msg = { + .msg_iov = &iov, + .msg_iovlen = 1, + }; + int s[2]; + u_int n; + + udp_socketpair(s); + + ATF_REQUIRE(sendmsg(s[1], &msg, 0) == sizeof(sbuf)); + iov.iov_base = rbuf; + for (int i = 0; i < 10; i++) { + n = (arc4random() % sizeof(sbuf)) + 1; + iov.iov_len = n; + ATF_REQUIRE(recvmsg(s[0], &msg, MSG_PEEK) == n); + if (n < sizeof(sbuf)) + ATF_REQUIRE(msg.msg_flags == (MSG_PEEK | MSG_TRUNC)); + else + ATF_REQUIRE(msg.msg_flags == MSG_PEEK); + ATF_REQUIRE(strncmp(sbuf, rbuf, n) == 0); + } + + close(s[0]); + close(s[1]); +} + +ATF_TP_ADD_TCS(tp) +{ + ATF_TP_ADD_TC(tp, trunc); + ATF_TP_ADD_TC(tp, peek); + + return (atf_no_error()); +}
