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Date: Sat, 26 Aug 2023 20:59:00 +0300
From: Arseniy Krasnov <avkrasnov@...utedevices.com>
To: Stefan Hajnoczi <stefanha@...hat.com>,
Stefano Garzarella <sgarzare@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
"Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
Bobby Eshleman <bobby.eshleman@...edance.com>
CC: <kvm@...r.kernel.org>, <virtualization@...ts.linux-foundation.org>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<kernel@...rdevices.ru>, <oxffffaa@...il.com>,
<avkrasnov@...utedevices.com>
Subject: [RFC PATCH v2 2/2] test/vsock: shutdowned socket test
This adds two tests for 'shutdown()' call. It checks that SIGPIPE is
sent when MSG_NOSIGNAL is not set and vice versa. Both flags SHUT_WR
and SHUT_RD are tested.
Signed-off-by: Arseniy Krasnov <avkrasnov@...utedevices.com>
---
tools/testing/vsock/vsock_test.c | 138 +++++++++++++++++++++++++++++++
1 file changed, 138 insertions(+)
diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 90718c2fd4ea..148fc9c47c50 100644
--- a/tools/testing/vsock/vsock_test.c
+++ b/tools/testing/vsock/vsock_test.c
@@ -19,6 +19,7 @@
#include <time.h>
#include <sys/mman.h>
#include <poll.h>
+#include <signal.h>
#include "timeout.h"
#include "control.h"
@@ -1170,6 +1171,133 @@ static void test_seqpacket_msg_peek_server(const struct test_opts *opts)
return test_msg_peek_server(opts, true);
}
+static sig_atomic_t have_sigpipe;
+
+static void sigpipe(int signo)
+{
+ have_sigpipe = 1;
+}
+
+static void test_stream_check_sigpipe(int fd)
+{
+ ssize_t res;
+
+ have_sigpipe = 0;
+
+ res = send(fd, "A", 1, 0);
+ if (res != -1) {
+ fprintf(stderr, "expected send(2) failure, got %zi\n", res);
+ exit(EXIT_FAILURE);
+ }
+
+ if (!have_sigpipe) {
+ fprintf(stderr, "SIGPIPE expected\n");
+ exit(EXIT_FAILURE);
+ }
+
+ have_sigpipe = 0;
+
+ res = send(fd, "A", 1, MSG_NOSIGNAL);
+ if (res != -1) {
+ fprintf(stderr, "expected send(2) failure, got %zi\n", res);
+ exit(EXIT_FAILURE);
+ }
+
+ if (have_sigpipe) {
+ fprintf(stderr, "SIGPIPE not expected\n");
+ exit(EXIT_FAILURE);
+ }
+}
+
+static void test_stream_shutwr_client(const struct test_opts *opts)
+{
+ int fd;
+
+ struct sigaction act = {
+ .sa_handler = sigpipe,
+ };
+
+ sigaction(SIGPIPE, &act, NULL);
+
+ fd = vsock_stream_connect(opts->peer_cid, 1234);
+ if (fd < 0) {
+ perror("connect");
+ exit(EXIT_FAILURE);
+ }
+
+ if (shutdown(fd, SHUT_WR)) {
+ perror("shutdown");
+ exit(EXIT_FAILURE);
+ }
+
+ test_stream_check_sigpipe(fd);
+
+ control_writeln("CLIENTDONE");
+
+ close(fd);
+}
+
+static void test_stream_shutwr_server(const struct test_opts *opts)
+{
+ int fd;
+
+ fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+ if (fd < 0) {
+ perror("accept");
+ exit(EXIT_FAILURE);
+ }
+
+ control_expectln("CLIENTDONE");
+
+ close(fd);
+}
+
+static void test_stream_shutrd_client(const struct test_opts *opts)
+{
+ int fd;
+
+ struct sigaction act = {
+ .sa_handler = sigpipe,
+ };
+
+ sigaction(SIGPIPE, &act, NULL);
+
+ fd = vsock_stream_connect(opts->peer_cid, 1234);
+ if (fd < 0) {
+ perror("connect");
+ exit(EXIT_FAILURE);
+ }
+
+ control_expectln("SHUTRDDONE");
+
+ test_stream_check_sigpipe(fd);
+
+ control_writeln("CLIENTDONE");
+
+ close(fd);
+}
+
+static void test_stream_shutrd_server(const struct test_opts *opts)
+{
+ int fd;
+
+ fd = vsock_stream_accept(VMADDR_CID_ANY, 1234, NULL);
+ if (fd < 0) {
+ perror("accept");
+ exit(EXIT_FAILURE);
+ }
+
+ if (shutdown(fd, SHUT_RD)) {
+ perror("shutdown");
+ exit(EXIT_FAILURE);
+ }
+
+ control_writeln("SHUTRDDONE");
+ control_expectln("CLIENTDONE");
+
+ close(fd);
+}
+
static struct test_case test_cases[] = {
{
.name = "SOCK_STREAM connection reset",
@@ -1250,6 +1378,16 @@ static struct test_case test_cases[] = {
.run_client = test_seqpacket_msg_peek_client,
.run_server = test_seqpacket_msg_peek_server,
},
+ {
+ .name = "SOCK_STREAM SHUT_WR",
+ .run_client = test_stream_shutwr_client,
+ .run_server = test_stream_shutwr_server,
+ },
+ {
+ .name = "SOCK_STREAM SHUT_RD",
+ .run_client = test_stream_shutrd_client,
+ .run_server = test_stream_shutrd_server,
+ },
{},
};
--
2.25.1
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