1 | /* Copyright (C) 2002-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <pthread.h> |
20 | #include <stdio.h> |
21 | #include <stdlib.h> |
22 | #include <unistd.h> |
23 | #include <sys/wait.h> |
24 | |
25 | |
26 | static int val; |
27 | |
28 | |
29 | static void |
30 | prepare1 (void) |
31 | { |
32 | val *= 2; |
33 | } |
34 | |
35 | static void |
36 | prepare2 (void) |
37 | { |
38 | ++val; |
39 | } |
40 | |
41 | static void |
42 | parent1 (void) |
43 | { |
44 | val += 4; |
45 | } |
46 | |
47 | static void |
48 | parent2 (void) |
49 | { |
50 | val *= 4; |
51 | } |
52 | |
53 | static void |
54 | child1 (void) |
55 | { |
56 | val += 8; |
57 | } |
58 | |
59 | static void |
60 | child2 (void) |
61 | { |
62 | val *= 8; |
63 | } |
64 | |
65 | |
66 | static int |
67 | do_test (void) |
68 | { |
69 | pid_t pid; |
70 | int status = 0; |
71 | |
72 | if (pthread_atfork (prepare: prepare1, parent: parent1, child: child1) != 0) |
73 | { |
74 | puts (s: "1st atfork failed" ); |
75 | exit (1); |
76 | } |
77 | if (pthread_atfork (prepare: prepare2, parent: parent2, child: child2) != 0) |
78 | { |
79 | puts (s: "2nd atfork failed" ); |
80 | exit (1); |
81 | } |
82 | |
83 | pid = fork (); |
84 | if (pid == -1) |
85 | { |
86 | puts (s: "fork failed" ); |
87 | exit (1); |
88 | } |
89 | |
90 | if (pid != 0) |
91 | { |
92 | /* Parent. */ |
93 | if (val != 24) |
94 | { |
95 | printf (format: "expected val=%d, got %d\n" , 24, val); |
96 | exit (1); |
97 | } |
98 | |
99 | if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid) |
100 | { |
101 | puts (s: "waitpid failed" ); |
102 | exit (1); |
103 | } |
104 | } |
105 | else |
106 | { |
107 | /* Child. */ |
108 | if (val != 80) |
109 | { |
110 | printf (format: "expected val=%d, got %d\n" , 80, val); |
111 | exit (2); |
112 | } |
113 | } |
114 | |
115 | return status; |
116 | } |
117 | |
118 | #define TEST_FUNCTION do_test () |
119 | #include "../test-skeleton.c" |
120 | |