Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 const char *msg1, *msg2;
43 int i, err;
44
45 err = 0;
46 for (i = 0; i < ARRAY_SIZE(tests); i++) {
47 struct socket_testcase *s = &tests[i];
48 int fd;
49
50 fd = socket(s->domain, s->type, s->protocol);
51 if (fd < 0) {
52 if (s->nosupport_ok &&
53 errno == EAFNOSUPPORT)
54 continue;
55
56 if (s->expect < 0 &&
57 errno == -s->expect)
58 continue;
59
60 msg1 = strerror_r(-s->expect, err_string1, ERR_STRING_SZ);
61 msg2 = strerror_r(errno, err_string2, ERR_STRING_SZ);
62
63 fprintf(stderr, "socket(%d, %d, %d) expected "
64 "err (%s) got (%s)\n",
65 s->domain, s->type, s->protocol,
66 msg1, msg2);
67
68 err = -1;
69 break;
70 } else {
71 close(fd);
72
73 if (s->expect < 0) {
74 msg1 = strerror_r(errno, err_string1, ERR_STRING_SZ);
75
76 fprintf(stderr, "socket(%d, %d, %d) expected "
77 "success got err (%s)\n",
78 s->domain, s->type, s->protocol,
79 msg1);
80
81 err = -1;
82 break;
83 }
84 }
85 }
86
87 return err;
88}
89
90int main(void)
91{
92 int err = run_tests();
93
94 return err;
95}