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76a50749 | 1 | /* Thread with running thread calls exec. |
bfff8b1b | 2 | Copyright (C) 2002-2017 Free Software Foundation, Inc. |
76a50749 UD |
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 | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
76a50749 UD |
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 | ||
32 | static void * | |
33 | tf (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 | ||
48 | static int | |
49 | do_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" |