close01.c revision aabb8340f63ed31afe995fd97795e542dc68b93c 
1/*
2 * Copyright (c) International Business Machines  Corp., 2001
3 *  07/2001 Ported by Wayne Boyer
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 Foundation,
17 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20/*
21 * DESCRIPTION
22 *	Test that closing a regular file and a pipe works correctly
23 */
24
25#include <stdio.h>
26#include <errno.h>
27#include <fcntl.h>
28#include <sys/stat.h>
29#include "test.h"
30
31void cleanup(void);
32void setup(void);
33
34char *TCID = "close01";
35int TST_TOTAL = 2;
36
37char fname[40] = "";
38
39int fild, newfd, pipefildes[2];
40
41struct test_case_t {
42	int *fd;
43	char *type;
44} TC[] = {
45	/* file descriptor for a regular file */
46	{
47	&newfd, "file"},
48	    /* file descriptor for a pipe */
49	{
50	&pipefildes[0], "pipe"}
51};
52
53int main(int ac, char **av)
54{
55
56	int i;
57	int lc;
58	const char *msg;
59
60	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
61		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
62
63	setup();
64
65	for (lc = 0; TEST_LOOPING(lc); lc++) {
66
67		tst_count = 0;
68
69		if ((fild = creat(fname, 0777)) == -1)
70			tst_brkm(TBROK | TERRNO, cleanup, "can't open file %s",
71				 fname);
72
73		if ((newfd = dup(fild)) == -1)
74			tst_brkm(TBROK | TERRNO, cleanup,
75				 "can't dup the file des");
76
77		if (pipe(pipefildes) == -1) {
78			tst_brkm(TBROK | TERRNO, cleanup, "can't open pipe");
79		}
80
81		for (i = 0; i < TST_TOTAL; i++) {
82
83			TEST(close(*TC[i].fd));
84
85			if (TEST_RETURN == -1) {
86				tst_resm(TFAIL, "call failed unexpectedly");
87				continue;
88			}
89
90			if (close(*TC[i].fd) == -1) {
91				tst_resm(TPASS, "%s appears closed",
92					 TC[i].type);
93			} else {
94				tst_resm(TFAIL, "%s close succeeded on"
95					 "second attempt", TC[i].type);
96			}
97		}
98
99	}
100
101	cleanup();
102	tst_exit();
103}
104
105void setup(void)
106{
107	int mypid;
108
109	tst_sig(FORK, DEF_HANDLER, cleanup);
110
111	umask(0);
112
113	TEST_PAUSE;
114
115	tst_tmpdir();
116
117	mypid = getpid();
118	sprintf(fname, "fname.%d", mypid);
119}
120
121void cleanup(void)
122{
123	close(fild);
124
125	tst_rmdir();
126
127}
128