1 /* Verify that the clone child stack is properly aligned.
2 Copyright (C) 2021-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C 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; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C 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 the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <sched.h>
20 #include <stdbool.h>
21 #include <stdint.h>
22 #include <stdio.h>
23 #include <string.h>
24 #include <sys/wait.h>
25 #include <unistd.h>
26 #include <tst-stack-align.h>
27 #include <clone_internal.h>
28 #include <support/xunistd.h>
29 #include <support/check.h>
30
31 static int
f(void * arg)32 f (void *arg)
33 {
34 puts ("in f");
35
36 return TEST_STACK_ALIGN () ? 1 : 0;
37 }
38
39 static int
do_test(void)40 do_test (void)
41 {
42 puts ("in main");
43
44 if (TEST_STACK_ALIGN ())
45 FAIL_EXIT1 ("stack alignment failed");
46
47 #ifdef __ia64__
48 # define STACK_SIZE 256 * 1024
49 #else
50 # define STACK_SIZE 128 * 1024
51 #endif
52 char st[STACK_SIZE] __attribute__ ((aligned));
53 struct clone_args clone_args =
54 {
55 .stack = (uintptr_t) st,
56 .stack_size = sizeof (st),
57 };
58 pid_t p = __clone_internal (&clone_args, f, 0);
59 TEST_VERIFY (p != -1);
60
61 int e;
62 xwaitpid (p, &e, __WCLONE);
63 TEST_VERIFY (WIFEXITED (e));
64 TEST_COMPARE (WEXITSTATUS (e), 0);
65 return 0;
66 }
67
68 #include <support/test-driver.c>
69