2 * This file is part of attach-f-p strace test.
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 #include <sys/syscall.h>
53 static const char text_parent[] = "attach-f-p.test parent";
54 static const char *child[N] = {
55 "attach-f-p.test child 0",
56 "attach-f-p.test child 1",
57 "attach-f-p.test child 2"
59 static const int sigs[N] = { SIGALRM, SIGUSR1, SIGUSR2 };
60 static const struct itimerspec its[N] = {
61 { .it_value.tv_sec = 1 },
62 { .it_value.tv_sec = 2 },
63 { .it_value.tv_sec = 3 }
65 static thread_arg_t args[N] = {
74 thread_arg_t *arg = a;
76 errno = sigwait(&arg->set, &signo);
78 perror_msg_and_fail("sigwait");
79 assert(chdir(child[arg->no]) == -1);
80 retval_t retval = { .pid = syscall(__NR_gettid) };
90 for (i = 0; i < N; ++i) {
91 sigemptyset(&args[i].set);
92 sigaddset(&args[i].set, sigs[i]);
94 errno = pthread_sigmask(SIG_BLOCK, &args[i].set, NULL);
96 perror_msg_and_fail("pthread_sigmask");
99 for (i = 0; i < N; ++i) {
100 struct sigevent sev = {
101 .sigev_notify = SIGEV_SIGNAL,
102 .sigev_signo = sigs[i]
105 if (timer_create(CLOCK_MONOTONIC, &sev, &timerid))
106 perror_msg_and_skip("timer_create");
108 if (timer_settime(timerid, 0, &its[i], NULL))
109 perror_msg_and_fail("timer_settime");
111 errno = pthread_create(&t[i], NULL, thread, (void *) &args[i]);
113 perror_msg_and_fail("pthread_create");
116 if (write(3, "\n", 1) != 1)
117 perror_msg_and_fail("write");
119 for (i = 0; i < N; ++i) {
121 errno = pthread_join(t[i], &retval.ptr);
123 perror_msg_and_fail("pthread_join");
125 printf("%-5d chdir(\"%s\") = -1 ENOENT (%m)\n"
126 "%-5d +++ exited with 0 +++\n",
127 retval.pid, child[i], retval.pid);
130 pid_t pid = getpid();
131 assert(chdir(text_parent) == -1);
133 printf("%-5d chdir(\"%s\") = -1 ENOENT (%m)\n"
134 "%-5d +++ exited with 0 +++\n", pid, text_parent, pid);