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@salutedevices.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 90718c2fd4ea953563d14afb46fd2294cc277aa5..148fc9c47c50fd8b6052c62d9bd4e5bbc03f9f45 100644 (file)
--- 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,
+       },
        {},
 };