1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2001-2023 Linux Test Project
4 * Copyright (c) International Business Machines Corp., 2001
5 * Copyright (c) 2008 Renaud Lottiaux <Renaud.Lottiaux@kerlabs.com>
6 * Ported to LTP: Wayne Boyer
7 */
8
9 /*\
10 * [Description]
11 *
12 * This tests the functionality of the execve(2) system call by spawning
13 * a few children, each of which would execute "execve_child" simultaneously,
14 * and finally the parent ensures that they terminated correctly.
15 */
16
17 #define _GNU_SOURCE
18
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <errno.h>
22 #include <unistd.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <sys/wait.h>
26 #include <pwd.h>
27
28 #include "tst_test.h"
29
30 #define TEST_APP "execve_child"
31
32 static int nchild = 8;
33
34 static char *opt_nchild;
35
do_child(void)36 static void do_child(void)
37 {
38 char *argv[3] = {TEST_APP, "canary", NULL};
39
40 TST_CHECKPOINT_WAIT(0);
41
42 TEST(execve(TEST_APP, argv, environ));
43 tst_res(TFAIL | TTERRNO, "execve() returned unexpected errno");
44 }
45
verify_execve(void)46 static void verify_execve(void)
47 {
48 int i;
49
50 for (i = 0; i < nchild; i++) {
51 if (SAFE_FORK() == 0)
52 do_child();
53 }
54
55 TST_CHECKPOINT_WAKE2(0, nchild);
56 }
57
setup(void)58 static void setup(void)
59 {
60 if (opt_nchild)
61 nchild = SAFE_STRTOL(opt_nchild, 1, INT_MAX);
62 }
63
64 static struct tst_test test = {
65 .timeout = 3,
66 .test_all = verify_execve,
67 .options = (struct tst_option[]) {
68 {"n:", &opt_nchild, "Numbers of children"},
69 {}
70 },
71 .forks_child = 1,
72 .child_needs_reinit = 1,
73 .needs_checkpoints = 1,
74 .resource_files = (const char *const []) {
75 TEST_APP,
76 NULL
77 },
78 .setup = setup,
79 };
80