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f7a9f785 | 1 | /* Copyright (C) 2002-2016 Free Software Foundation, Inc. |
76a50749 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://www.gnu.org/licenses/>. */ | |
76a50749 UD |
18 | |
19 | #include <errno.h> | |
20 | #include <pthread.h> | |
21 | #include <signal.h> | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/mman.h> | |
27 | #include <sys/wait.h> | |
28 | ||
29 | ||
30 | static sigset_t ss; | |
31 | static pthread_barrier_t *b; | |
32 | ||
33 | ||
34 | static void * | |
35 | tf (void *arg) | |
36 | { | |
37 | sigdelset (&ss, SIGINT); | |
38 | ||
39 | if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0) | |
40 | { | |
41 | puts ("2nd pthread_sigmask failed"); | |
42 | exit (1); | |
43 | } | |
44 | ||
45 | pthread_barrier_wait (b); | |
46 | ||
47 | int sig; | |
48 | int res = sigwait (&ss, &sig); | |
49 | if (res == 0) | |
50 | { | |
51 | printf ("sigwait returned successfully with signal %d\n", sig); | |
52 | exit (1); | |
53 | } | |
54 | ||
55 | printf ("sigwait returned with %s (%d)\n", strerror (res), res); | |
56 | ||
57 | return NULL; | |
58 | } | |
59 | ||
60 | ||
61 | static void | |
62 | receiver (void) | |
63 | { | |
64 | pthread_t th; | |
65 | ||
66 | /* Make sure the process doesn't run forever. */ | |
67 | alarm (10); | |
68 | ||
69 | sigfillset (&ss); | |
70 | ||
71 | if (pthread_sigmask (SIG_SETMASK, &ss, NULL) != 0) | |
72 | { | |
73 | puts ("1st pthread_sigmask failed"); | |
74 | exit (1); | |
75 | } | |
76 | ||
77 | if (pthread_create (&th, NULL, tf, NULL) != 0) | |
78 | { | |
79 | puts ("pthread_create failed"); | |
80 | exit (1); | |
81 | } | |
82 | ||
83 | if (pthread_join (th, NULL) == 0) | |
84 | { | |
85 | puts ("thread joined?!"); | |
86 | exit (1); | |
87 | } | |
88 | ||
89 | _exit (0); | |
90 | } | |
91 | ||
92 | ||
93 | static int | |
94 | do_test (void) | |
95 | { | |
96 | char tmp[] = "/tmp/tst-signal1-XXXXXX"; | |
97 | ||
98 | int fd = mkstemp (tmp); | |
99 | if (fd == -1) | |
100 | { | |
101 | puts ("mkstemp failed"); | |
102 | exit (1); | |
103 | } | |
104 | ||
105 | unlink (tmp); | |
106 | ||
107 | int i; | |
108 | for (i = 0; i < 20; ++i) | |
109 | write (fd, "foobar xyzzy", 12); | |
110 | ||
111 | b = mmap (NULL, sizeof (pthread_barrier_t), PROT_READ | PROT_WRITE, | |
112 | MAP_SHARED, fd, 0); | |
113 | if (b == MAP_FAILED) | |
114 | { | |
115 | puts ("mmap failed"); | |
116 | exit (1); | |
117 | } | |
118 | ||
119 | pthread_barrierattr_t ba; | |
120 | if (pthread_barrierattr_init (&ba) != 0) | |
121 | { | |
122 | puts ("barrierattr_init failed"); | |
123 | exit (1); | |
124 | } | |
125 | ||
126 | if (pthread_barrierattr_setpshared (&ba, PTHREAD_PROCESS_SHARED) != 0) | |
127 | { | |
128 | puts ("barrierattr_setpshared failed"); | |
129 | exit (1); | |
130 | } | |
131 | ||
132 | if (pthread_barrier_init (b, &ba, 2) != 0) | |
133 | { | |
134 | puts ("barrier_init failed"); | |
135 | exit (1); | |
136 | } | |
137 | ||
138 | if (pthread_barrierattr_destroy (&ba) != 0) | |
139 | { | |
140 | puts ("barrierattr_destroy failed"); | |
141 | exit (1); | |
142 | } | |
143 | ||
144 | pid_t pid = fork (); | |
145 | if (pid == -1) | |
146 | { | |
147 | puts ("fork failed"); | |
148 | exit (1); | |
149 | } | |
150 | ||
151 | if (pid == 0) | |
152 | receiver (); | |
153 | ||
154 | pthread_barrier_wait (b); | |
155 | ||
156 | /* Wait a bit more. */ | |
157 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 10000000 }; | |
158 | nanosleep (&ts, NULL); | |
159 | ||
160 | /* Send the signal. */ | |
161 | puts ("sending the signal now"); | |
162 | kill (pid, SIGINT); | |
163 | ||
164 | /* Wait for the process to terminate. */ | |
165 | int status; | |
166 | if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) | |
167 | { | |
168 | puts ("wrong child reported terminated"); | |
169 | exit (1); | |
170 | } | |
171 | ||
172 | if (!WIFSIGNALED (status)) | |
173 | { | |
174 | puts ("child wasn't signalled"); | |
175 | exit (1); | |
176 | } | |
177 | ||
178 | if (WTERMSIG (status) != SIGINT) | |
179 | { | |
180 | puts ("child not terminated with SIGINT"); | |
181 | exit (1); | |
182 | } | |
183 | ||
184 | return 0; | |
185 | } | |
186 | ||
187 | #define TEST_FUNCTION do_test () | |
188 | #include "../test-skeleton.c" |