getdents02.c revision ec19461cecdac81c48bbbe4783624167754349a2 
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 *	getdents02.c
23 *
24 * DESCRIPTION
25 *	getdents02 - check that we get a failure with a bad file descriptor
26 *
27 * ALGORITHM
28 *	loop if that option was specified
29 *	issue the system call using a bad file descriptor
30 *	check the errno value
31 *	  issue a PASS message if we get EBADF - errno 9
32 *	otherwise, the tests fails
33 *	  issue a FAIL message
34 *	  break any remaining tests
35 *	  call cleanup
36 *
37 * USAGE:  <for command-line>
38 *  getdents02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
39 *     where,  -c n : Run n copies concurrently.
40 *             -e   : Turn on errno logging.
41 *	       -i n : Execute test n times.
42 *	       -I x : Execute test for x seconds.
43 *	       -P x : Pause for x seconds between iterations.
44 *	       -t   : Turn on syscall timing.
45 *
46 * HISTORY
47 *	03/2001 - Written by Wayne Boyer
48 *
49 * RESTRICTIONS
50 *	none
51 */
52
53#include "getdents.h"
54#include "test.h"
55#include "usctest.h"
56
57#include <errno.h>
58#include <fcntl.h>
59#include <linux/types.h>
60#include <dirent.h>
61#include <linux/unistd.h>
62#include <unistd.h>
63
64void cleanup(void);
65void setup(void);
66
67char *TCID = "getdents02";
68int TST_TOTAL = 1;
69
70int exp_enos[] = { EBADF, 0 };	/* 0 terminated list of expected errnos */
71
72int main(int ac, char **av)
73{
74	int lc;
75	char *msg;
76	int rval, fd;
77	int count;
78	size_t size = 0;
79	char *dir_name = NULL;
80	struct dirent *dirp;
81
82	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
83		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
84
85	setup();
86
87	for (lc = 0; TEST_LOOPING(lc); lc++) {
88		Tst_count = 0;
89
90		if ((dir_name = getcwd(dir_name, size)) == NULL)
91			tst_brkm(TBROK, cleanup, "Can not get current "
92				 "directory name");
93
94		if ((dirp = malloc(sizeof(struct dirent))) == NULL)
95			tst_brkm(TBROK, cleanup, "malloc failed");
96
97		count = (int)sizeof(struct dirent);
98
99		/* set up a bad file descriptor */
100
101		fd = -5;
102
103		rval = getdents(fd, dirp, count);
104
105		/*
106		 * Hopefully we get an error due to the bad file descriptor.
107		 */
108		if (rval < 0) {
109			TEST_ERROR_LOG(errno);
110
111			switch (errno) {
112			case EBADF:
113				tst_resm(TPASS,
114				    "failed as expected with EBADF");
115				break;
116			default:
117				tst_resm(TFAIL|TERRNO,
118				    "getdents failed unexpectedly");
119				break;
120			}
121		} else
122			tst_resm(TFAIL, "call succeeded unexpectedly");
123
124		free(dir_name);
125		dir_name = NULL;
126
127		free(dirp);
128	}
129
130	cleanup();
131
132	tst_exit();
133}
134
135void setup(void)
136{
137
138	tst_sig(NOFORK, DEF_HANDLER, cleanup);
139
140	tst_tmpdir();
141
142	TEST_EXP_ENOS(exp_enos);
143
144	TEST_PAUSE;
145}
146
147void cleanup(void)
148{
149
150	TEST_CLEANUP;
151
152	tst_rmdir();
153}
154