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[glibc/history.git] / nptl / tst-exec1.c
blob0448a059d11b5fab5737c6cc6ed6379648ba6631
1 /* Simple exec test, only a thread in the parent.
2 Copyright (C) 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
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.
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.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #include <errno.h>
22 #include <paths.h>
23 #include <pthread.h>
24 #include <signal.h>
25 #include <spawn.h>
26 #include <stdbool.h>
27 #include <stdio.h>
28 #include <stdlib.h>
29 #include <unistd.h>
30 #include <sys/wait.h>
33 static void *
34 tf (void *arg)
36 pthread_t th = (pthread_t) arg;
38 if (pthread_join (th, NULL) == 0)
40 puts ("thread in parent joined!?");
41 exit (1);
44 puts ("join in thread in parent returned!?");
45 exit (1);
49 static int
50 do_test (void)
52 int fd[2];
53 if (pipe (fd) != 0)
55 puts ("pipe failed");
56 exit (1);
59 /* Not interested in knowing when the pipe is closed. */
60 if (sigignore (SIGPIPE) != 0)
62 puts ("sigignore failed");
63 exit (1);
66 posix_spawn_file_actions_t a;
67 if (posix_spawn_file_actions_init (&a) != 0)
69 puts ("spawn_file_actions_init failed");
70 exit (1);
73 if (posix_spawn_file_actions_adddup2 (&a, fd[1], STDOUT_FILENO) != 0)
75 puts ("spawn_file_actions_adddup2 failed");
76 exit (1);
79 if (posix_spawn_file_actions_addclose (&a, fd[0]) != 0)
81 puts ("spawn_file_actions_addclose");
82 exit (1);
85 pthread_t th;
86 if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
88 puts ("create failed");
89 exit (1);
92 pid_t pid;
93 char *argv[] = { (char *) _PATH_BSHELL, (char *) "-c", (char *) "echo $$",
94 NULL };
95 if (posix_spawn (&pid, _PATH_BSHELL, &a, NULL, argv, NULL) != 0)
97 puts ("spawn failed");
98 exit (1);
101 close (fd[1]);
103 char buf[200];
104 ssize_t n;
105 bool seen_pid = false;
106 while (TEMP_FAILURE_RETRY ((n = read (fd[0], buf, sizeof (buf)))) > 0)
108 /* We only expect to read the PID. */
109 char *endp;
110 long int rpid = strtol (buf, &endp, 10);
112 if (*endp != '\n')
114 printf ("didn't parse whole line: \"%s\"\n", buf);
115 exit (1);
117 if (endp == buf)
119 puts ("read empty line");
120 exit (1);
123 if (rpid != pid)
125 printf ("found \"%s\", expected PID %ld\n", buf, (long int) pid);
126 exit (1);
129 if (seen_pid)
131 puts ("found more than one PID line");
132 exit (1);
135 seen_pid = true;
138 close (fd[0]);
140 int status;
141 int err = waitpid (pid, &status, 0);
142 if (err != pid)
144 puts ("waitpid failed");
145 exit (1);
148 if (!seen_pid)
150 puts ("didn't get PID");
151 exit (1);
154 puts ("read correct PID");
156 return 0;
159 #define TEST_FUNCTION do_test ()
160 #include "../test-skeleton.c"