1 /* Copyright (C) 1998-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <dirent.h>
19 #include <errno.h>
20 #include <fcntl.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <unistd.h>
25 #include <sys/stat.h>
26
27 /* Name of the FIFO. */
28 char tmpname[] = "fifoXXXXXX";
29
30
31 /* Do the real work. */
32 static int
real_test(void)33 real_test (void)
34 {
35 DIR *dirp;
36
37 /* This should not block for an FIFO. */
38 dirp = opendir (tmpname);
39
40 /* Successful. */
41 if (dirp != NULL)
42 {
43 /* Oh, oh, how can this work? */
44 fputs ("`opendir' succeeded on a FIFO???\n", stdout);
45 closedir (dirp);
46 return 1;
47 }
48
49 if (errno != ENOTDIR)
50 {
51 fprintf (stdout, "`opendir' return error `%s' instead of `%s'\n",
52 strerror (errno), strerror (ENOTDIR));
53 return 1;
54 }
55
56 return 0;
57 }
58
59
60 static int
do_test(void)61 do_test (void)
62 {
63 int retval;
64
65 if (mktemp (tmpname) == NULL)
66 {
67 perror ("mktemp");
68 return 1;
69 }
70
71 /* Try to generate a FIFO. */
72 if (mknod (tmpname, 0600 | S_IFIFO, 0) < 0)
73 {
74 perror ("mknod");
75 /* We cannot make this an error. */
76 return 0;
77 }
78
79 retval = real_test ();
80
81 remove (tmpname);
82
83 return retval;
84 }
85
86
87 static void
do_cleanup(void)88 do_cleanup (void)
89 {
90 remove (tmpname);
91 }
92 #define CLEANUP_HANDLER do_cleanup
93
94 #include <support/test-driver.c>
95