1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright(c) 2016 Fujitsu Ltd.
4 * Author: Xiao Yang <yangx.jy@cn.fujitsu.com>
5 * Copyright (c) Linux Test Project, 2017-2019
6 */
7
8 /*\
9 * [Description]
10 *
11 * When SCTP protocol created wih socket(2) and buffer is invalid,
12 * sendto(2) should fail and set errno to EFAULT, but it sets errno
13 * to ENOMEM.
14 *
15 * This is a regression test fixed by kernel 3.7
16 * 6e51fe757259 (sctp: fix -ENOMEM result with invalid user space pointer in sendto() syscall)
17 */
18
19 #include <errno.h>
20 #include <string.h>
21 #include <unistd.h>
22 #include <sys/types.h>
23 #include <sys/socket.h>
24 #include <netinet/in.h>
25
26 #include "tst_test.h"
27
28 #ifndef IPPROTO_SCTP
29 # define IPPROTO_SCTP 132
30 #endif
31
32 static int sockfd;
33 static struct sockaddr_in sa;
34
setup(void)35 static void setup(void)
36 {
37 sockfd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
38 if (sockfd == -1) {
39 if (errno == EPROTONOSUPPORT)
40 tst_brk(TCONF, "sctp protocol was not supported");
41 else
42 tst_brk(TBROK | TERRNO, "socket() failed with sctp");
43 }
44
45 memset(&sa, 0, sizeof(sa));
46 sa.sin_family = AF_INET;
47 sa.sin_addr.s_addr = inet_addr("127.0.0.1");
48 sa.sin_port = htons(11111);
49 }
50
cleanup(void)51 static void cleanup(void)
52 {
53 if (sockfd > 0)
54 SAFE_CLOSE(sockfd);
55 }
56
verify_sendto(void)57 static void verify_sendto(void)
58 {
59 TEST(sendto(sockfd, NULL, 1, 0, (struct sockaddr *) &sa, sizeof(sa)));
60 if (TST_RET != -1) {
61 tst_res(TFAIL, "sendto(fd, NULL, ...) succeeded unexpectedly");
62 return;
63 }
64
65 if (TST_ERR == EFAULT) {
66 tst_res(TPASS | TTERRNO,
67 "sendto(fd, NULL, ...) failed expectedly");
68 return;
69 }
70
71 tst_res(TFAIL | TTERRNO,
72 "sendto(fd, NULL, ...) failed unexpectedly, expected EFAULT");
73 }
74
75 static struct tst_test test = {
76 .setup = setup,
77 .cleanup = cleanup,
78 .test_all = verify_sendto,
79 .tags = (const struct tst_tag[]) {
80 {"linux-git", "6e51fe757259"},
81 {}
82 }
83 };
84