1/*
2 *
3 *   Copyright (c) International Business Machines  Corp., 2001
4 *
5 *   This program is free software;  you can redistribute it and/or modify
6 *   it under the terms of the GNU General Public License as published by
7 *   the Free Software Foundation; either version 2 of the License, or
8 *   (at your option) any later version.
9 *
10 *   This program 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
13 *   the GNU General Public License for more details.
14 *
15 *   You should have received a copy of the GNU General Public License
16 *   along with this program;  if not, write to the Free Software
17 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20/*
21 * DESCRIPTION
22 *	Testcase to check open(2) sets errno to ENXIO correctly.
23 *
24 * ALGORITHM
25 *	Create a named pipe using mknod(2).  Attempt to
26 *	open(2) the pipe for writing. The open(2) should
27 *	fail with ENXIO.
28 */
29#include <sys/types.h>
30#include <sys/stat.h>
31#include <fcntl.h>
32#include <errno.h>
33#include <unistd.h>
34#include "test.h"
35
36char *TCID = "open06";
37int TST_TOTAL = 1;
38
39static void setup(void);
40static void cleanup(void);
41
42static char fname[100] = "fifo";
43
44int main(int ac, char **av)
45{
46	int lc;
47
48	tst_parse_opts(ac, av, NULL, NULL);
49
50	setup();
51
52	for (lc = 0; TEST_LOOPING(lc); lc++) {
53		tst_count = 0;
54
55		TEST(open(fname, O_NONBLOCK | O_WRONLY));
56		if (TEST_RETURN != -1) {
57			tst_resm(TFAIL, "open(2) succeeded unexpectedly");
58			continue;
59		}
60
61		if (TEST_ERRNO != ENXIO)
62			tst_resm(TFAIL, "Expected ENXIO got %d", TEST_ERRNO);
63		else
64			tst_resm(TPASS, "call returned expected ENXIO error");
65	}
66
67	cleanup();
68	tst_exit();
69}
70
71static void setup(void)
72{
73	tst_sig(NOFORK, DEF_HANDLER, cleanup);
74
75	TEST_PAUSE;
76
77	tst_tmpdir();
78
79	sprintf(fname, "%s.%d", fname, getpid());
80
81	if (mknod(fname, S_IFIFO | 0644, 0) == -1)
82		tst_brkm(TBROK, cleanup, "mknod FAILED");
83}
84
85static void cleanup(void)
86{
87	unlink(fname);
88
89	tst_rmdir();
90}
91