diff mbox series

[RFC,v1,2/2] test/vsock: shutdowned socket test

Message ID 20230801141727.481156-3-AVKrasnov@sberdevices.ru
State New
Headers
Series vsock: handle writes to shutdowned socket |

Commit Message

Arseniy Krasnov Aug. 1, 2023, 2:17 p.m. UTC 
  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@sberdevices.ru>
---
 tools/testing/vsock/vsock_test.c | 138 +++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)

Comments

Stefano Garzarella Aug. 2, 2023, 8 a.m. UTC | #1 
On Tue, Aug 01, 2023 at 05:17:27PM +0300, Arseniy Krasnov wrote:
>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@sberdevices.ru>
>---
> 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..21d40a8d881c 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 bool have_sigpipe;
                  ^
We should define it as `volatile sig_atomic_t`:

the behavior is undefined if the signal handler refers to any object
[CX] [Option Start]  other than errno [Option End]  with static storage
duration other than by assigning a value to an object declared as
volatile sig_atomic_t

https://pubs.opengroup.org/onlinepubs/9699919799/functions/signal.html

The rest LGTM!

Thanks,
Stefano

>+
>+static void sigpipe(int signo)
>+{
>+	have_sigpipe = true;
>+}
>+
>+static void test_stream_check_sigpipe(int fd)
>+{
>+	ssize_t res;
>+
>+	have_sigpipe = false;
>+
>+	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 = false;
>+
>+	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
>
Arseniy Krasnov Aug. 4, 2023, 12:48 p.m. UTC | #2 
On 02.08.2023 11:00, Stefano Garzarella wrote:
> On Tue, Aug 01, 2023 at 05:17:27PM +0300, Arseniy Krasnov wrote:
>> 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@sberdevices.ru>
>> ---
>> 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..21d40a8d881c 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 bool have_sigpipe;
>                  ^
> We should define it as `volatile sig_atomic_t`:
> 
> the behavior is undefined if the signal handler refers to any object
> [CX] [Option Start]  other than errno [Option End]  with static storage
> duration other than by assigning a value to an object declared as
> volatile sig_atomic_t

Yes, exactly, I forgot about sig_atomic_t.

I'll fix it.

Thanks, Arseniy

> 
> https://pubs.opengroup.org/onlinepubs/9699919799/functions/signal.html
> 
> The rest LGTM!
> 
> Thanks,
> Stefano
> 
>> +
>> +static void sigpipe(int signo)
>> +{
>> +    have_sigpipe = true;
>> +}
>> +
>> +static void test_stream_check_sigpipe(int fd)
>> +{
>> +    ssize_t res;
>> +
>> +    have_sigpipe = false;
>> +
>> +    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 = false;
>> +
>> +    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
>>
>
diff mbox series

Patch

diff --git a/tools/testing/vsock/vsock_test.c b/tools/testing/vsock/vsock_test.c
index 90718c2fd4ea..21d40a8d881c 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 bool have_sigpipe;
+
+static void sigpipe(int signo)
+{
+	have_sigpipe = true;
+}
+
+static void test_stream_check_sigpipe(int fd)
+{
+	ssize_t res;
+
+	have_sigpipe = false;
+
+	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 = false;
+
+	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,
+	},
 	{},
 };