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/* Test the accept4 function with differing flags arguments.
Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <arpa/inet.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <support/check.h>
#include <support/xsocket.h>
#include <support/xunistd.h>
#include <sys/socket.h>
static bool
is_nonblocking (int fd)
{
int status = fcntl (fd, F_GETFL);
if (status < 0)
FAIL_EXIT1 ("fcntl (F_GETFL): %m");
return status & O_NONBLOCK;
}
static bool
is_cloexec (int fd)
{
int status = fcntl (fd, F_GETFD);
if (status < 0)
FAIL_EXIT1 ("fcntl (F_GETFD): %m");
return status & FD_CLOEXEC;
}
struct client
{
int socket;
struct sockaddr_in address;
};
/* Perform a non-blocking connect to *SERVER_ADDRESS. */
static struct client
client_connect (const struct sockaddr_in *server_address)
{
struct client result;
result.socket = xsocket (AF_INET,
SOCK_STREAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
TEST_VERIFY (is_nonblocking (result.socket));
TEST_VERIFY (is_cloexec (result.socket));
int ret = connect (result.socket, (const struct sockaddr *) server_address,
sizeof (*server_address));
if (ret < 0 && errno != EINPROGRESS)
FAIL_EXIT1 ("client connect: %m");
socklen_t sa_len = sizeof (result.address);
xgetsockname (result.socket, (struct sockaddr *) &result.address,
&sa_len);
TEST_VERIFY (sa_len == sizeof (result.address));
return result;
}
static void
check_same_address (const struct sockaddr_in *left,
const struct sockaddr_in *right)
{
TEST_VERIFY (left->sin_family == AF_INET);
TEST_VERIFY (right->sin_family == AF_INET);
TEST_VERIFY (left->sin_addr.s_addr == right->sin_addr.s_addr);
TEST_VERIFY (left->sin_port == right->sin_port);
}
static int
do_test (void)
{
/* Create server socket. */
int server_socket = xsocket (AF_INET, SOCK_STREAM, 0);
TEST_VERIFY (!is_nonblocking (server_socket));
TEST_VERIFY (!is_cloexec (server_socket));
struct sockaddr_in server_address =
{
.sin_family = AF_INET,
.sin_addr = {.s_addr = htonl (INADDR_LOOPBACK) },
};
xbind (server_socket,
(struct sockaddr *) &server_address, sizeof (server_address));
{
socklen_t sa_len = sizeof (server_address);
xgetsockname (server_socket, (struct sockaddr *) &server_address,
&sa_len);
TEST_VERIFY (sa_len == sizeof (server_address));
}
xlisten (server_socket, 5);
for (int do_nonblock = 0; do_nonblock < 2; ++do_nonblock)
for (int do_cloexec = 0; do_cloexec < 2; ++do_cloexec)
{
int sockflags = 0;
if (do_nonblock)
sockflags |= SOCK_NONBLOCK;
if (do_cloexec)
sockflags |= SOCK_CLOEXEC;
struct client client = client_connect (&server_address);
struct sockaddr_in client_address;
socklen_t sa_len = sizeof (client_address);
int client_socket = xaccept4 (server_socket,
(struct sockaddr *) &client_address,
&sa_len, sockflags);
TEST_VERIFY (sa_len == sizeof (client_address));
TEST_VERIFY (is_nonblocking (client_socket) == do_nonblock);
TEST_VERIFY (is_cloexec (client_socket) == do_cloexec);
check_same_address (&client.address, &client_address);
xclose (client_socket);
xclose (client.socket);
}
xclose (server_socket);
return 0;
}
#include <support/test-driver.c>
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