1 | /* Copyright (C) 2003-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <pthread.h> |
20 | #include <signal.h> |
21 | #include <stdio.h> |
22 | #include <stdlib.h> |
23 | #include <sys/wait.h> |
24 | #include <unistd.h> |
25 | |
26 | |
27 | static int fd[4]; |
28 | static pthread_barrier_t b; |
29 | volatile int in_sh_body; |
30 | unsigned long cleanups; |
31 | |
32 | static void |
33 | cl (void *arg) |
34 | { |
35 | cleanups = (cleanups << 4) | (long) arg; |
36 | } |
37 | |
38 | |
39 | static void __attribute__((noinline)) |
40 | sh_body (void) |
41 | { |
42 | char c; |
43 | |
44 | pthread_cleanup_push (cl, (void *) 1L); |
45 | |
46 | in_sh_body = 1; |
47 | if (read (fd[2], &c, 1) == 1) |
48 | { |
49 | puts (s: "read succeeded" ); |
50 | exit (1); |
51 | } |
52 | |
53 | pthread_cleanup_pop (0); |
54 | } |
55 | |
56 | |
57 | static void |
58 | sh (int sig) |
59 | { |
60 | pthread_cleanup_push (cl, (void *) 2L); |
61 | sh_body (); |
62 | in_sh_body = 0; |
63 | |
64 | pthread_cleanup_pop (0); |
65 | } |
66 | |
67 | |
68 | static void __attribute__((noinline)) |
69 | tf_body (void) |
70 | { |
71 | char c; |
72 | |
73 | pthread_cleanup_push (cl, (void *) 3L); |
74 | |
75 | int r = pthread_barrier_wait (barrier: &b); |
76 | if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) |
77 | { |
78 | puts (s: "child thread: barrier_wait failed" ); |
79 | exit (1); |
80 | } |
81 | |
82 | if (read (fd[0], &c, 1) == 1) |
83 | { |
84 | puts (s: "read succeeded" ); |
85 | exit (1); |
86 | } |
87 | |
88 | pthread_cleanup_pop (0); |
89 | } |
90 | |
91 | |
92 | static void * |
93 | tf (void *arg) |
94 | { |
95 | pthread_t th = (pthread_t) arg; |
96 | |
97 | int r = pthread_barrier_wait (barrier: &b); |
98 | if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD) |
99 | { |
100 | puts (s: "parent thread: barrier_wait failed" ); |
101 | exit (1); |
102 | } |
103 | |
104 | sleep (seconds: 1); |
105 | |
106 | r = pthread_kill (threadid: th, SIGHUP); |
107 | if (r) |
108 | { |
109 | errno = r; |
110 | printf (format: "pthread_kill failed %m\n" ); |
111 | exit (1); |
112 | } |
113 | |
114 | while (in_sh_body == 0) |
115 | sleep (seconds: 1); |
116 | |
117 | if (pthread_cancel (th: th) != 0) |
118 | { |
119 | puts (s: "cancel failed" ); |
120 | exit (1); |
121 | } |
122 | |
123 | void *ret; |
124 | if (pthread_join (th: th, thread_return: &ret) != 0) |
125 | { |
126 | puts (s: "join failed" ); |
127 | exit (1); |
128 | } |
129 | |
130 | if (ret != PTHREAD_CANCELED) |
131 | { |
132 | puts (s: "result is wrong" ); |
133 | exit (1); |
134 | } |
135 | |
136 | if (cleanups != 0x1234L) |
137 | { |
138 | printf (format: "called cleanups %lx\n" , cleanups); |
139 | exit (1); |
140 | } |
141 | |
142 | if (pthread_barrier_destroy (barrier: &b)) |
143 | { |
144 | puts (s: "barrier destroy failed" ); |
145 | exit (1); |
146 | } |
147 | |
148 | /* The pipe closing must be issued after the cancellation handling to avoid |
149 | a race condition where the cancellation runs after both pipe ends are |
150 | closed. In this case the read syscall returns EOF and the cancellation |
151 | must not act. */ |
152 | close (fd: fd[0]); |
153 | close (fd: fd[1]); |
154 | close (fd: fd[2]); |
155 | close (fd: fd[3]); |
156 | |
157 | exit (0); |
158 | } |
159 | |
160 | |
161 | static int |
162 | do_one_test (void) |
163 | { |
164 | in_sh_body = 0; |
165 | |
166 | pid_t pid = fork (); |
167 | |
168 | if (pid == -1) |
169 | { |
170 | printf (format: "fork failed: %m\n" ); |
171 | return 1; |
172 | } |
173 | |
174 | if (pid) |
175 | { |
176 | int status; |
177 | if (waitpid (pid: pid, stat_loc: &status, options: 0) < 0) |
178 | { |
179 | printf (format: "waitpid failed %m\n" ); |
180 | return 1; |
181 | } |
182 | |
183 | return !WIFEXITED (status) || WEXITSTATUS (status); |
184 | } |
185 | |
186 | if (pthread_barrier_init (barrier: &b, NULL, count: 2) != 0) |
187 | { |
188 | puts (s: "barrier_init failed" ); |
189 | exit (1); |
190 | } |
191 | |
192 | cleanups = 0; |
193 | if (pipe (pipedes: fd) != 0 || pipe (pipedes: fd + 2) != 0) |
194 | { |
195 | puts (s: "pipe failed" ); |
196 | exit (1); |
197 | } |
198 | |
199 | pthread_t th; |
200 | if (pthread_create (newthread: &th, NULL, start_routine: tf, arg: (void *) pthread_self ()) != 0) |
201 | { |
202 | puts (s: "create failed" ); |
203 | exit (1); |
204 | } |
205 | |
206 | pthread_cleanup_push (cl, (void *) 4L); |
207 | tf_body (); |
208 | pthread_cleanup_pop (0); |
209 | exit (1); |
210 | } |
211 | |
212 | |
213 | static int |
214 | do_test (void) |
215 | { |
216 | stack_t ss; |
217 | ss.ss_sp = malloc (size: 2 * SIGSTKSZ); |
218 | if (ss.ss_sp == NULL) |
219 | { |
220 | puts (s: "failed to allocate alternate stack" ); |
221 | return 1; |
222 | } |
223 | ss.ss_flags = 0; |
224 | ss.ss_size = 2 * SIGSTKSZ; |
225 | if (sigaltstack (ss: &ss, NULL) < 0) |
226 | { |
227 | printf (format: "sigaltstack failed %m\n" ); |
228 | return 1; |
229 | } |
230 | |
231 | struct sigaction sa; |
232 | sa.sa_handler = sh; |
233 | sigemptyset (&sa.sa_mask); |
234 | sa.sa_flags = 0; |
235 | |
236 | if (sigaction (SIGHUP, act: &sa, NULL) != 0) |
237 | { |
238 | puts (s: "sigaction failed" ); |
239 | return 1; |
240 | } |
241 | |
242 | puts (s: "sa_flags = 0 test" ); |
243 | if (do_one_test ()) |
244 | return 1; |
245 | |
246 | sa.sa_handler = sh; |
247 | sigemptyset (&sa.sa_mask); |
248 | sa.sa_flags = SA_ONSTACK; |
249 | |
250 | if (sigaction (SIGHUP, act: &sa, NULL) != 0) |
251 | { |
252 | puts (s: "sigaction failed" ); |
253 | return 1; |
254 | } |
255 | |
256 | puts (s: "sa_flags = SA_ONSTACK test" ); |
257 | if (do_one_test ()) |
258 | return 1; |
259 | |
260 | #ifdef SA_SIGINFO |
261 | sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh; |
262 | sigemptyset (&sa.sa_mask); |
263 | sa.sa_flags = SA_SIGINFO; |
264 | |
265 | if (sigaction (SIGHUP, act: &sa, NULL) != 0) |
266 | { |
267 | puts (s: "sigaction failed" ); |
268 | return 1; |
269 | } |
270 | |
271 | puts (s: "sa_flags = SA_SIGINFO test" ); |
272 | if (do_one_test ()) |
273 | return 1; |
274 | |
275 | sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh; |
276 | sigemptyset (&sa.sa_mask); |
277 | sa.sa_flags = SA_SIGINFO | SA_ONSTACK; |
278 | |
279 | if (sigaction (SIGHUP, act: &sa, NULL) != 0) |
280 | { |
281 | puts (s: "sigaction failed" ); |
282 | return 1; |
283 | } |
284 | |
285 | puts (s: "sa_flags = SA_SIGINFO|SA_ONSTACK test" ); |
286 | if (do_one_test ()) |
287 | return 1; |
288 | #endif |
289 | |
290 | return 0; |
291 | } |
292 | |
293 | #define TIMEOUT 40 |
294 | #define TEST_FUNCTION do_test () |
295 | #include "../test-skeleton.c" |
296 | |