1 /*
2 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
3 * Copyright (c) 2012 Wanlong Gao <gaowanlong@cn.fujitsu.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12 *
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 */
18
19 /*
20 * This is a test for the clone(2) system call.
21 * It is intended to provide a limited exposure of the system call.
22 */
23
24 #if defined UCLINUX && !__THROW
25 /* workaround for libc bug */
26 #define __THROW
27 #endif
28
29 #include <errno.h>
30 #include <sched.h>
31 #include <sys/wait.h>
32 #include "test.h"
33 #include "safe_macros.h"
34 #include "clone_platform.h"
35
36 static void setup(void);
37 static void cleanup(void);
38 static int do_child();
39
40 char *TCID = "clone01";
41 int TST_TOTAL = 1;
42
main(int ac,char ** av)43 int main(int ac, char **av)
44 {
45 void *child_stack;
46 int status, child_pid;
47
48 tst_parse_opts(ac, av, NULL, NULL);
49
50 setup();
51
52 child_stack = malloc(CHILD_STACK_SIZE);
53 if (child_stack == NULL)
54 tst_brkm(TBROK, cleanup, "Cannot allocate stack for child");
55
56 tst_count = 0;
57
58 TEST(ltp_clone(SIGCHLD, do_child, NULL, CHILD_STACK_SIZE, child_stack));
59 if (TEST_RETURN == -1)
60 tst_resm(TFAIL | TTERRNO, "clone failed");
61
62 child_pid = SAFE_WAIT(cleanup, &status);
63
64 if (TEST_RETURN == child_pid)
65 tst_resm(TPASS, "clone returned %ld", TEST_RETURN);
66 else
67 tst_resm(TFAIL, "clone returned %ld, wait returned %d",
68 TEST_RETURN, child_pid);
69
70 free(child_stack);
71
72 cleanup();
73
74 tst_exit();
75 }
76
setup(void)77 static void setup(void)
78 {
79 tst_sig(FORK, DEF_HANDLER, cleanup);
80 TEST_PAUSE;
81 }
82
cleanup(void)83 static void cleanup(void)
84 {
85 }
86
do_child(void)87 static int do_child(void)
88 {
89 exit(0);
90 }
91