1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* Test the accept4 function with differing flags arguments.
Copyright (C) 2017-2021 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>
|
