statfs03.c revision d59a659cd639ca2780b00049d102acd2a783d585 
1/*
2 *
3 *   Copyright (C) Bull S.A. 2001
4 *   Copyright (c) International Business Machines  Corp., 2001
5 *
6 *   This program is free software;  you can redistribute it and/or modify
7 *   it under the terms of the GNU General Public License as published by
8 *   the Free Software Foundation; either version 2 of the License, or
9 *   (at your option) any later version.
10 *
11 *   This program is distributed in the hope that it will be useful,
12 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
13 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
14 *   the GNU General Public License for more details.
15 *
16 *   You should have received a copy of the GNU General Public License
17 *   along with this program;  if not, write to the Free Software
18 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21/*
22 * NAME
23 *	statfs03.c
24 *
25 * DESCRIPTION
26 *	Testcase to check that statfs(2) sets errno to EACCES when
27 *	search permission is denied for a component of the path prefix of path.
28 *
29 * ALGORITHM
30 *	 Use a component of the pathname, where search permission
31 *	 is denied for a component of the path prefix of path.
32 *
33 * USAGE:  <for command-line>
34 *  statfs03 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
35 *     where,  -c n : Run n copies concurrently.
36 *             -e   : Turn on errno logging.
37 *             -i n : Execute test n times.
38 *             -I x : Execute test for x seconds.
39 *             -P x : Pause for x seconds between iterations.
40 *             -t   : Turn on syscall timing.
41 *
42 * HISTORY
43 *	05/2002 Ported by Jacky Malcles
44 *
45 * RESTRICTIONS
46 *	NONE
47 *
48 */
49#include <sys/types.h>
50#include <sys/statfs.h>
51#include <sys/stat.h>
52#include <sys/vfs.h>
53#include <fcntl.h>
54#include <errno.h>
55#include <stdio.h>
56#include "test.h"
57#include "usctest.h"
58#include <pwd.h>
59
60char *TCID = "statfs03";
61int TST_TOTAL = 1;
62int fileHandle = 0;
63
64int exp_enos[] = { EACCES, 0 };
65
66char nobody_uid[] = "nobody";
67struct passwd *ltpuser;
68
69char fname[30] = "testfile";
70char path[50];
71struct statfs buf;
72
73void setup(void);
74void cleanup(void);
75
76int main(int ac, char **av)
77{
78	int lc;
79	char *msg;
80
81	if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
82		tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
83
84	setup();
85
86	/* set up the expected errnos */
87	TEST_EXP_ENOS(exp_enos);
88
89	for (lc = 0; TEST_LOOPING(lc); lc++) {
90
91		tst_count = 0;
92
93		TEST(statfs(path, &buf));
94
95		if (TEST_RETURN != -1) {
96			tst_resm(TFAIL, "call succeeded unexpectedly");
97
98		} else {
99
100			TEST_ERROR_LOG(TEST_ERRNO);
101
102			if (TEST_ERRNO == EACCES) {
103				tst_resm(TPASS, "expected failure - "
104					 "errno = %d : %s", TEST_ERRNO,
105					 strerror(TEST_ERRNO));
106			} else {
107				tst_resm(TFAIL, "unexpected error - %d : %s - "
108					 "expected %d", TEST_ERRNO,
109					 strerror(TEST_ERRNO), exp_enos[0]);
110			}
111		}
112	}
113
114	cleanup();
115	tst_exit();
116}
117
118/*
119 * setup() - performs all ONE TIME setup for this test.
120 */
121void setup()
122{
123
124	tst_require_root(NULL);
125
126	tst_sig(NOFORK, DEF_HANDLER, cleanup);
127
128	TEST_PAUSE;
129
130	/* make a temporary directory and cd to it */
131	tst_tmpdir();
132	if (chmod(get_tst_tmpdir(), S_IRWXU) == -1)
133		tst_brkm(TBROK | TERRNO, cleanup, "chmod(%s, 700) failed",
134			 get_tst_tmpdir());
135
136	/* create a test file */
137	sprintf(fname, "%s.%d", fname, getpid());
138	if (mkdir(fname, 0444) == -1) {
139		tst_resm(TFAIL, "creat(2) FAILED to creat temp file");
140	} else {
141		sprintf(path, "%s/%s", fname, fname);
142		if ((fileHandle = creat(path, 0444)) == -1)
143			tst_brkm(TFAIL | TERRNO, cleanup, "creat failed");
144	}
145
146	ltpuser = getpwnam(nobody_uid);
147	if (ltpuser == NULL)
148		tst_brkm(TBROK | TERRNO, cleanup, "getpwnam failed");
149	if (seteuid(ltpuser->pw_uid) == -1) {
150		tst_resm(TINFO | TERRNO, "seteuid failed to "
151			 "to set the effective uid to %d", ltpuser->pw_uid);
152	}
153
154}
155
156/*
157 * cleanup() - performs all ONE TIME cleanup for this test at
158 *	       completion or premature exit.
159 */
160void cleanup()
161{
162	/* reset the process ID to the saved ID (root) */
163	if (setuid(0) == -1) {
164		tst_resm(TINFO, "setuid(0) failed");
165	}
166
167	/*
168	 * print timing stats if that option was specified.
169	 * print errno log if that option was specified.
170	 */
171	close(fileHandle);
172
173	TEST_CLEANUP;
174
175	/* delete the test directory created in setup() */
176	tst_rmdir();
177
178}
179