1// SPDX-License-Identifier: GPL-2.0
2#include <stdio.h>
3#include <errno.h>
4#include <unistd.h>
5#include <string.h>
6#include <sys/types.h>
7#include <sys/socket.h>
8#include <netinet/in.h>
9
10#include "../kselftest.h"
11
12struct socket_testcase {
13 int domain;
14 int type;
15 int protocol;
16
17 /* 0 = valid file descriptor
18 * -foo = error foo
19 */
20 int expect;
21
22 /* If non-zero, accept EAFNOSUPPORT to handle the case
23 * of the protocol not being configured into the kernel.
24 */
25 int nosupport_ok;
26};
27
28static struct socket_testcase tests[] = {
29 { AF_MAX, 0, 0, -EAFNOSUPPORT, 0 },
30 { AF_INET, SOCK_STREAM, IPPROTO_TCP, 0, 1 },
31 { AF_INET, SOCK_DGRAM, IPPROTO_TCP, -EPROTONOSUPPORT, 1 },
32 { AF_INET, SOCK_DGRAM, IPPROTO_UDP, 0, 1 },
33 { AF_INET, SOCK_STREAM, IPPROTO_UDP, -EPROTONOSUPPORT, 1 },
34};
35
36#define ERR_STRING_SZ 64
37
38static int run_tests(void)
39{
40 char err_string1[ERR_STRING_SZ];
41 char err_string2[ERR_STRING_SZ];
42 int i, err;
43
44 err = 0;
45 for (i = 0; i < ARRAY_SIZE(tests); i++) {
46 struct socket_testcase *s = &tests[i];
47 int fd;
48
49 fd = socket(s->domain, s->type, s->protocol);
50 if (fd < 0) {
51 if (s->nosupport_ok &&
52 errno == EAFNOSUPPORT)
53 continue;
54
55 if (s->expect < 0 &&
56 errno == -s->expect)
57 continue;
58
59 strerror_r(-s->expect, err_string1, ERR_STRING_SZ);
60 strerror_r(errno, err_string2, ERR_STRING_SZ);
61
62 fprintf(stderr, "socket(%d, %d, %d) expected "
63 "err (%s) got (%s)\n",
64 s->domain, s->type, s->protocol,
65 err_string1, err_string2);
66
67 err = -1;
68 break;
69 } else {
70 close(fd);
71
72 if (s->expect < 0) {
73 strerror_r(errno, err_string1, ERR_STRING_SZ);
74
75 fprintf(stderr, "socket(%d, %d, %d) expected "
76 "success got err (%s)\n",
77 s->domain, s->type, s->protocol,
78 err_string1);
79
80 err = -1;
81 break;
82 }
83 }
84 }
85
86 return err;
87}
88
89int main(void)
90{
91 int err = run_tests();
92
93 return err;
94}
95

source code of linux/tools/testing/selftests/net/socket.c