1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2018 Linux Test Project
4 * Copyright (c) International Business Machines Corp., 2001
5 *
6 * Ported to LTP: Wayne Boyer
7 * 21/04/2008 Renaud Lottiaux (Renaud.Lottiaux@kerlabs.com)
8 */
9
10 /*
11 * NAME
12 * execve05.c
13 *
14 * DESCRIPTION
15 * This testcase tests the basic functionality of the execve(2) system
16 * call.
17 *
18 * ALGORITHM
19 * This tests the functionality of the execve(2) system call by spawning
20 * a few children, each of which would execute "execve_child" simultaneously,
21 * and finally the parent ensures that they terminated correctly.
22 *
23 * USAGE
24 * execve05 -i 5 -n 20
25 */
26
27 #ifndef _GNU_SOURCE
28 #define _GNU_SOURCE
29 #endif
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <errno.h>
33 #include <unistd.h>
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <sys/wait.h>
37 #include <pwd.h>
38
39 #include "tst_test.h"
40
41 #define TEST_APP "execve_child"
42
43 static int nchild = 8;
44
45 static char *opt_nchild;
46
do_child(void)47 static void do_child(void)
48 {
49 char *argv[3] = {TEST_APP, "canary", NULL};
50
51 TST_CHECKPOINT_WAIT(0);
52
53 TEST(execve(TEST_APP, argv, environ));
54 tst_res(TFAIL | TTERRNO, "execve() returned unexpected errno");
55 }
56
verify_execve(void)57 static void verify_execve(void)
58 {
59 int i;
60
61 for (i = 0; i < nchild; i++) {
62 if (SAFE_FORK() == 0)
63 do_child();
64 }
65
66 TST_CHECKPOINT_WAKE2(0, nchild);
67 }
68
setup(void)69 static void setup(void)
70 {
71 if (opt_nchild)
72 nchild = SAFE_STRTOL(opt_nchild, 1, INT_MAX);
73 }
74
75 static struct tst_test test = {
76 .test_all = verify_execve,
77 .options = (struct tst_option[]) {
78 {"n:", &opt_nchild, "Numbers of children"},
79 {}
80 },
81 .forks_child = 1,
82 .child_needs_reinit = 1,
83 .needs_checkpoints = 1,
84 .resource_files = (const char *const []) {
85 TEST_APP,
86 NULL
87 },
88 .setup = setup,
89 };
90