1 /*
2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31
32 #include <assert.h>
33 #include <signal.h>
34 #include <unistd.h>
35 #include <sys/wait.h>
36 #include <sys/resource.h>
37
38 int
main(void)39 main(void)
40 {
41 int fds[2];
42 int s;
43 pid_t pid;
44 struct rusage rusage = {};
45 siginfo_t info = {};
46
47 (void) close(0);
48 (void) close(1);
49 assert(!pipe(fds) && fds[0] == 0 && fds[1] == 1);
50
51 pid = fork();
52 assert(pid >= 0);
53 if (!pid) {
54 char c;
55 (void) close(1);
56 assert(read(0, &c, sizeof(c)) == 1);
57 return 42;
58 }
59
60 (void) close(0);
61 assert(wait4(pid, &s, WNOHANG | __WALL, NULL) == 0);
62 assert(waitid(P_PID, pid, &info, WNOHANG | WEXITED) == 0);
63
64 assert(write(1, "", 1) == 1);
65 (void) close(1);
66 assert(wait4(pid, &s, 0, &rusage) == pid);
67 assert(WIFEXITED(s) && WEXITSTATUS(s) == 42);
68
69 pid = fork();
70 assert(pid >= 0);
71 if (!pid) {
72 (void) raise(SIGUSR1);
73 return 77;
74 }
75 assert(wait4(pid, &s, __WALL, NULL) == pid);
76 assert(WIFSIGNALED(s) && WTERMSIG(s) == SIGUSR1);
77
78 pid = fork();
79 assert(pid >= 0);
80 if (!pid) {
81 raise(SIGSTOP);
82 return 0;
83 }
84 assert(wait4(pid, &s, WUNTRACED, NULL) == pid);
85 assert(WIFSTOPPED(s) && WSTOPSIG(s) == SIGSTOP);
86
87 assert(kill(pid, SIGCONT) == 0);
88 assert(waitid(P_PID, pid, &info, WEXITED | WSTOPPED) == 0);
89 assert(info.si_code == CLD_EXITED && info.si_status == 0);
90
91 assert(wait4(-1, &s, WNOHANG | WUNTRACED | __WALL, &rusage) == -1);
92
93 return 0;
94 }
95