close01.c revision cfb2c9599640d03969b2a14fabb185faef065834 
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
20/*
21 * NAME
22 * 	close01.c
23 *
24 * DESCRIPTION
25 * 	Test that closing a regular file and a pipe works correctly
26 *
27 * ALGORITHM
28 * 	Creat a file, and dup() a fildes
29 * 	Open a pipe
30 *	call close() using the TEST macro
31 *	if the call fails
32 *	   issue a FAIL message and continue
33 *	else if STD_FUNCTIONAL_TEST
34 *	   attempt to close the file/pipe again
35 *	   if there is an error
36 *	      issue a PASS message
37 *	   else
38 *	      issue a FAIL message
39 *	else
40 *	   issue a PASS message
41 *
42 *
43 * USAGE:  <for command-line>
44 *  close01 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
45 *     where,  -c n : Run n copies concurrently.
46 *             -f   : Turn off functionality Testing.
47 *             -i n : Execute test n times.
48 *             -I x : Execute test for x seconds.
49 *             -P x : Pause for x seconds between iterations.
50 *             -t   : Turn on syscall timing.
51 *
52 * HISTORY
53 *	07/2001 Ported by Wayne Boyer
54 *
55 * RESTRICTIONS
56 * 	None
57 */
58
59#include <stdio.h>
60#include <errno.h>
61#include <fcntl.h>
62#include <sys/stat.h>
63#include "test.h"
64#include "usctest.h"
65
66void cleanup(void);
67void setup(void);
68
69char *TCID = "close01";
70int TST_TOTAL = 2;
71extern int Tst_count;
72
73char fname[40] = "";
74
75int fild, newfd, pipefildes[2];
76
77struct test_case_t {
78        int *fd;
79	char *type;
80} TC[] = {
81	/* file descriptor for a regular file */
82        {&newfd, "file"},
83
84	/* file descriptor for a pipe */
85        {&pipefildes[0], "pipe"}
86};
87
88int
89main(int ac, char **av)
90{
91
92	int i;
93	int lc;				/* loop counter */
94	char *msg;			/* message returned from parse_opts */
95
96	/* parse standard options */
97	if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char *)NULL){
98		tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
99		/*NOTREACHED*/
100	}
101
102	setup();			/* global setup */
103
104	/* The following loop checks looping state if -i option given */
105	for (lc = 0; TEST_LOOPING(lc); lc++) {
106
107		/* reset Tst_count in case we are looping */
108		Tst_count = 0;
109
110		/* set up the file and pipe for the test */
111		if ((fild = creat(fname, 0777)) == -1) {
112			tst_brkm(TBROK, cleanup, "can't open file %s", fname);
113		}
114
115		if ((newfd = dup(fild)) == -1) {
116			tst_brkm(TBROK, cleanup, "can't dup the file des");
117		}
118
119		if (pipe(pipefildes) == -1) {
120			tst_brkm(TBROK, cleanup, "can't open pipe");
121		}
122
123		/* loop through the test cases */
124
125		for (i = 0; i < TST_TOTAL; i++) {
126
127			TEST(close(*TC[i].fd));
128
129                        if (TEST_RETURN == -1) {
130                                tst_resm(TFAIL, "call failed unexpectedly");
131                                continue;
132                        }
133
134			if (STD_FUNCTIONAL_TEST) {
135				/* attempt to close the fd again */
136				if (close(*TC[i].fd) == -1) {
137					tst_resm(TPASS, "%s appears closed",
138						 TC[i].type);
139				} else {
140					tst_resm(TFAIL, "%s close succeeded on"
141						 "second attempt", TC[i].type);
142				}
143			} else {
144				tst_resm(TPASS, "call succeeded");
145			}
146		}
147
148	}
149	cleanup();
150
151	return 0;
152	/*NOTREACHED*/
153}
154
155/*
156 * setup() - performs all ONE TIME setup for this test
157 */
158void
159setup(void)
160{
161	int mypid;
162
163	/* capture signals */
164	tst_sig(FORK, DEF_HANDLER, cleanup);
165
166	umask(0);
167
168	/* Pause if that option was specified */
169	TEST_PAUSE;
170
171	/* make a temp directory and cd to it */
172	tst_tmpdir();
173
174	mypid = getpid();
175	sprintf(fname, "fname.%d\n", mypid);
176}
177
178/*
179 * cleanup() - performs all the ONE TIME cleanup for this test at completion
180 * 	       or premature exit.
181 */
182void
183cleanup(void)
184{
185	/*
186	 * print timing status if that option was specified.
187	 * print errno log if that option was specified
188	 */
189    close(fild);
190
191	TEST_CLEANUP;
192
193	/* Remove tmp dir and all files in it */
194	tst_rmdir();
195
196	/* exit with return code appropriate for results */
197	tst_exit();
198}
199