1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
4 * Copyright (c) 2012 Wanlong Gao <[email protected]>
5 */
6
7 /*\
8 * [Description]
9 *
10 * Test to verify inheritance of environment variables by child.
11 */
12
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <sched.h>
16 #include "tst_test.h"
17 #include "clone_platform.h"
18
19 #define MAX_LINE_LENGTH 256
20 #define ENV_VAL "LTP test variable value"
21 #define ENV_ID "LTP_CLONE_TEST"
22
23 static void *child_stack;
24
child_environ(void * arg LTP_ATTRIBUTE_UNUSED)25 static int child_environ(void *arg LTP_ATTRIBUTE_UNUSED)
26 {
27 const char *env_val = getenv(ENV_ID);
28 if (!env_val) {
29 tst_res(TFAIL, "Variable " ENV_ID " not defined in child");
30 exit(0);
31 }
32
33 if (strcmp(env_val, ENV_VAL)) {
34 tst_res(TFAIL, "Variable value is different");
35 exit(0);
36 }
37
38 tst_res(TPASS, "The environment variables of the child and the parent are the same ");
39
40 exit(0);
41 }
42
verify_clone(void)43 static void verify_clone(void)
44 {
45 TST_EXP_PID_SILENT(ltp_clone(SIGCHLD, child_environ, NULL, CHILD_STACK_SIZE,
46 child_stack));
47
48 if (!TST_PASS)
49 return;
50
51 tst_reap_children();
52 }
53
setup(void)54 static void setup(void)
55 {
56 SAFE_SETENV(ENV_ID, ENV_VAL, 0);
57 }
58
59 static struct tst_test test = {
60 .setup = setup,
61 .test_all = verify_clone,
62 .bufs = (struct tst_buffers []) {
63 {&child_stack, .size = CHILD_STACK_SIZE},
64 {},
65 },
66 };
67