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1/* Thread with running thread calls exec.
2 Copyright (C) 2002-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <http://www.gnu.org/licenses/>. */
19
20#include <errno.h>
21#include <paths.h>
22#include <pthread.h>
23#include <signal.h>
24#include <spawn.h>
25#include <stdbool.h>
26#include <stdio.h>
27#include <stdlib.h>
28#include <unistd.h>
29#include <sys/wait.h>
30
31
32static void *
33tf (void *arg)
34{
35 pthread_t th = (pthread_t) arg;
36
37 if (pthread_join (th, NULL) == 0)
38 {
39 puts ("thread in parent joined!?");
40 exit (1);
41 }
42
43 puts ("join in thread in parent returned!?");
44 exit (1);
45}
46
47
48static int
49do_test (void)
50{
51 int fd[2];
52 if (pipe (fd) != 0)
53 {
54 puts ("pipe failed");
55 exit (1);
56 }
57
58 /* Not interested in knowing when the pipe is closed. */
59 if (sigignore (SIGPIPE) != 0)
60 {
61 puts ("sigignore failed");
62 exit (1);
63 }
64
65 pid_t pid = fork ();
66 if (pid == -1)
67 {
68 puts ("fork failed");
69 exit (1);
70 }
71
72 if (pid == 0)
73 {
74 /* Use the fd for stdout. This is kind of ugly because it
75 substitutes the fd of stdout but we know what we are doing
76 here... */
77 if (dup2 (fd[1], STDOUT_FILENO) != STDOUT_FILENO)
78 {
79 puts ("dup2 failed");
80 exit (1);
81 }
82
83 close (fd[0]);
84
85 pthread_t th;
86 if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
87 {
88 puts ("create failed");
89 exit (1);
90 }
91
92 execl (_PATH_BSHELL, _PATH_BSHELL, "-c", "echo $$", NULL);
93
94 puts ("execl failed");
95 exit (1);
96 }
97
98 close (fd[1]);
99
100 char buf[200];
101 ssize_t n;
102 bool seen_pid = false;
103 while (TEMP_FAILURE_RETRY ((n = read (fd[0], buf, sizeof (buf)))) > 0)
104 {
105 /* We only expect to read the PID. */
106 char *endp;
107 long int rpid = strtol (buf, &endp, 10);
108
109 if (*endp != '\n')
110 {
111 printf ("didn't parse whole line: \"%s\"\n", buf);
112 exit (1);
113 }
114 if (endp == buf)
115 {
116 puts ("read empty line");
117 exit (1);
118 }
119
120 if (rpid != pid)
121 {
122 printf ("found \"%s\", expected PID %ld\n", buf, (long int) pid);
123 exit (1);
124 }
125
126 if (seen_pid)
127 {
128 puts ("found more than one PID line");
129 exit (1);
130 }
131 seen_pid = true;
132 }
133
134 close (fd[0]);
135
136 int status;
137 int err = waitpid (pid, &status, 0);
138 if (err != pid)
139 {
140 puts ("waitpid failed");
141 exit (1);
142 }
143
144 if (!seen_pid)
145 {
146 puts ("didn't get PID");
147 exit (1);
148 }
149
150 return 0;
151}
152
153#define TEST_FUNCTION do_test ()
154#include "../test-skeleton.c"
155

Warning: That file was not part of the compilation database. It may have many parsing errors.