1 | /* Check sendmmsg cancellation. |
2 | |
3 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
4 | This file is part of the GNU C Library. |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either |
9 | version 2.1 of the License, or (at your option) any later version. |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <https://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <stdio.h> |
21 | #include <stddef.h> |
22 | #include <stdlib.h> |
23 | #include <string.h> |
24 | #include <sys/types.h> |
25 | #include <sys/socket.h> |
26 | #include <sys/un.h> |
27 | #include <sys/ipc.h> |
28 | #include <sys/msg.h> |
29 | #include <unistd.h> |
30 | #include <errno.h> |
31 | #include <pthread.h> |
32 | |
33 | #include "tst-cancel4-common.h" |
34 | |
35 | static void * |
36 | tf_sendmmsg (void *arg) |
37 | { |
38 | if (arg == NULL) |
39 | // XXX If somebody can provide a portable test case in which sendmmsg() |
40 | // blocks we can enable this test to run in both rounds. |
41 | abort (); |
42 | |
43 | struct sockaddr_un sun; |
44 | |
45 | tempfd = socket (AF_UNIX, SOCK_DGRAM, protocol: 0); |
46 | if (tempfd == -1) |
47 | FAIL_EXIT1 ("socket (AF_UNIX, SOCK_DGRAM, 0): %m" ); |
48 | |
49 | int tries = 0; |
50 | do |
51 | { |
52 | if (++tries > 10) |
53 | FAIL_EXIT1 ("too many unsuccessful bind calls" ); |
54 | |
55 | strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-7-XXXXXX" ); |
56 | if (mktemp (template: sun.sun_path) == NULL) |
57 | FAIL_EXIT1 ("cannot generate temp file name" ); |
58 | |
59 | sun.sun_family = AF_UNIX; |
60 | } |
61 | while (bind (fd: tempfd, addr: (struct sockaddr *) &sun, |
62 | offsetof (struct sockaddr_un, sun_path) |
63 | + strlen (sun.sun_path) + 1) != 0); |
64 | tempfname = strdup (s: sun.sun_path); |
65 | |
66 | tempfd2 = socket (AF_UNIX, SOCK_DGRAM, protocol: 0); |
67 | if (tempfd2 == -1) |
68 | FAIL_EXIT1 ("socket (AF_UNIX, SOCK_DGRAM, 0): %m" ); |
69 | |
70 | int r = pthread_barrier_wait (barrier: &b2); |
71 | if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) |
72 | FAIL_EXIT1 ("pthread_barrier_wait" ); |
73 | |
74 | r = pthread_barrier_wait (barrier: &b2); |
75 | if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) |
76 | FAIL_EXIT1 ("pthread_barrier_wait" ); |
77 | |
78 | pthread_cleanup_push (cl, NULL); |
79 | |
80 | char mem[1]; |
81 | struct iovec iov[1]; |
82 | iov[0].iov_base = mem; |
83 | iov[0].iov_len = 1; |
84 | |
85 | struct mmsghdr mm; |
86 | mm.msg_hdr.msg_name = &sun; |
87 | mm.msg_hdr.msg_namelen = (offsetof (struct sockaddr_un, sun_path) |
88 | + strlen (sun.sun_path) + 1); |
89 | mm.msg_hdr.msg_iov = iov; |
90 | mm.msg_hdr.msg_iovlen = 1; |
91 | mm.msg_hdr.msg_control = NULL; |
92 | mm.msg_hdr.msg_controllen = 0; |
93 | |
94 | ssize_t ret = sendmmsg (fd: tempfd2, vmessages: &mm, vlen: 1, flags: 0); |
95 | if (ret == -1 && errno == ENOSYS) |
96 | exit (77); |
97 | |
98 | pthread_cleanup_pop (0); |
99 | |
100 | FAIL_EXIT1 ("sendmmsg returned" ); |
101 | } |
102 | |
103 | struct cancel_tests tests[] = |
104 | { |
105 | ADD_TEST (sendmmsg, 2, 1), |
106 | }; |
107 | #define ntest_tf (sizeof (tests) / sizeof (tests[0])) |
108 | |
109 | #include "tst-cancel4-common.c" |
110 | |