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37bd6c8e JG |
1 | /* |
2 | * Copyright (C) 2009 Pierre-Marc Fournier | |
3 | * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | |
4 | * | |
5 | * This 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; version 2.1 of | |
8 | * the License. | |
9 | * | |
10 | * This 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 | |
16 | * License along with this library; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
18 | */ | |
19 | ||
20 | #include <stdio.h> | |
21 | #include <unistd.h> | |
22 | #include <sys/types.h> | |
b871e4b3 | 23 | #include <sys/wait.h> |
37bd6c8e JG |
24 | #include <stdlib.h> |
25 | ||
26 | #define TRACEPOINT_DEFINE | |
27 | #define TRACEPOINT_CREATE_PROBES | |
28 | #include "ust_tests_fork.h" | |
29 | ||
30 | int main(int argc, char **argv, char *env[]) | |
31 | { | |
32 | int result; | |
33 | ||
34 | if (argc < 2) { | |
35 | fprintf(stderr, "usage: fork PROG_TO_EXEC\n"); | |
36 | exit(1); | |
37 | } | |
38 | ||
39 | printf("parent_pid %d\n", getpid()); | |
40 | tracepoint(ust_tests_fork, before_fork, getpid()); | |
41 | ||
42 | result = fork(); | |
43 | if (result == -1) { | |
44 | perror("fork"); | |
45 | return 1; | |
46 | } | |
47 | if (result == 0) { | |
48 | char *args[] = { "fork2", NULL }; | |
49 | ||
50 | tracepoint(ust_tests_fork, after_fork_child, getpid()); | |
51 | ||
52 | result = execve(argv[1], args, env); | |
53 | if (result == -1) { | |
54 | perror("execve"); | |
b871e4b3 JG |
55 | result = 1; |
56 | goto end; | |
37bd6c8e JG |
57 | } |
58 | } else { | |
59 | printf("child_pid %d\n", result); | |
60 | tracepoint(ust_tests_fork, after_fork_parent, getpid()); | |
b871e4b3 JG |
61 | if (waitpid(result, NULL, 0) < 0) { |
62 | perror("waitpid"); | |
63 | result = 1; | |
64 | goto end; | |
65 | } | |
37bd6c8e | 66 | } |
b871e4b3 JG |
67 | result = 0; |
68 | end: | |
69 | return result; | |
37bd6c8e | 70 | } |