]>
Commit | Line | Data |
---|---|---|
04277e02 | 1 | /* Copyright (C) 2003-2019 Free Software Foundation, Inc. |
dfdd294a UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@redhat.com>, 2003. | |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
dfdd294a UD |
18 | |
19 | #include <dlfcn.h> | |
20 | #include <errno.h> | |
21 | #include <mcheck.h> | |
22 | #include <pthread.h> | |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/wait.h> | |
27 | ||
28 | ||
29 | /* Must be exported. */ | |
30 | int val; | |
31 | ||
32 | static void | |
33 | prepare (void) | |
34 | { | |
35 | val *= 2; | |
36 | } | |
37 | ||
38 | static void | |
39 | parent (void) | |
40 | { | |
41 | val += 4; | |
42 | } | |
43 | ||
44 | static void | |
45 | child (void) | |
46 | { | |
47 | val += 8; | |
48 | } | |
49 | ||
50 | ||
51 | static int | |
52 | do_test (void) | |
53 | { | |
54 | mtrace (); | |
55 | ||
56 | if (pthread_atfork (prepare, parent, child) != 0) | |
57 | { | |
58 | puts ("do_test: atfork failed"); | |
59 | exit (1); | |
60 | } | |
61 | ||
62 | void *h = dlopen ("tst-atfork2mod.so", RTLD_LAZY); | |
63 | if (h == NULL) | |
64 | { | |
65 | printf ("dlopen failed: %s\n", dlerror ()); | |
66 | exit (1); | |
67 | } | |
68 | ||
69 | /* First trial of fork. */ | |
70 | pid_t pid = fork (); | |
71 | if (pid == -1) | |
72 | { | |
73 | puts ("1st fork failed"); | |
74 | exit (1); | |
75 | } | |
76 | ||
77 | if (pid == 0) | |
78 | { | |
79 | /* Child. */ | |
80 | if (val != 80) | |
81 | { | |
82 | printf ("1st: expected val=%d, got %d\n", 80, val); | |
83 | exit (2); | |
84 | } | |
85 | ||
86 | exit (0); | |
87 | } | |
88 | ||
89 | /* Parent. */ | |
90 | if (val != 24) | |
91 | { | |
92 | printf ("1st: expected val=%d, got %d\n", 24, val); | |
93 | exit (1); | |
94 | } | |
95 | ||
96 | int status; | |
97 | if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) | |
98 | { | |
99 | puts ("1st waitpid failed"); | |
100 | exit (1); | |
101 | } | |
102 | ||
103 | if (status != 0) | |
104 | exit (status); | |
105 | ||
106 | puts ("unloading now"); | |
107 | ||
108 | /* Unload the module. */ | |
109 | if (dlclose (h) != 0) | |
110 | { | |
111 | puts ("dlclose failed"); | |
112 | exit (1); | |
113 | } | |
114 | ||
115 | puts ("2nd fork"); | |
116 | ||
117 | /* Second fork trial. */ | |
118 | val = 1; | |
119 | pid = fork (); | |
120 | if (pid == -1) | |
121 | { | |
122 | puts ("2nd fork failed"); | |
123 | exit (1); | |
124 | } | |
125 | ||
126 | if (pid == 0) | |
127 | { | |
128 | /* Child. */ | |
129 | if (val != 10) | |
130 | { | |
131 | printf ("2nd: expected val=%d, got %d\n", 10, val); | |
132 | exit (3); | |
133 | } | |
134 | ||
135 | exit (0); | |
136 | } | |
137 | ||
138 | /* Parent. */ | |
139 | if (val != 6) | |
140 | { | |
141 | printf ("2nd: expected val=%d, got %d\n", 6, val); | |
142 | exit (1); | |
143 | } | |
144 | ||
145 | if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) | |
146 | { | |
147 | puts ("2nd waitpid failed"); | |
148 | exit (1); | |
149 | } | |
150 | ||
151 | if (status != 0) | |
152 | exit (status); | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
157 | #define TEST_FUNCTION do_test () | |
158 | #include "../test-skeleton.c" |