1 /* Check for failure paths handling for cancellation points.
2 Copyright (C) 2015-2022 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 <errno.h>
20 #include <pthread.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <unistd.h>
25
26 /* Check that the cancel syscall points handles both the errno and return code
27 correctly for invalid arguments. */
28 static void *
tf(void * arg)29 tf (void *arg)
30 {
31 #ifdef SET_CANCEL_DISABLE
32 pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, NULL);
33 #endif
34
35 /* This is a cancellation point, but we should not be cancelled. */
36 int r = write (-1, 0, 0);
37
38 if (r != -1 || errno != EBADF)
39 {
40 printf ("error: write returned %d, errno %d\n", r, errno);
41 exit (1);
42 }
43
44 return NULL;
45 }
46
47 static int
do_test(void)48 do_test (void)
49 {
50 pthread_t th;
51
52 if (pthread_create (&th, NULL, tf, NULL) != 0)
53 {
54 puts ("error: pthread_create failed");
55 exit (1);
56 }
57
58 if (pthread_join (th, NULL) != 0)
59 {
60 puts ("error: pthread_join failed");
61 exit (1);
62 }
63
64 return 0;
65 }
66
67 #define TEST_FUNCTION do_test ()
68 #include "../test-skeleton.c"
69