setrlimit02.c revision d6d11d08678aac1ed2c370ea8e42e5f45aea07be 
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 * NAME
22 *	setrlimit02.c
23 *
24 * DESCRIPTION
25 *	Testcase to test the different errnos set by setrlimit(2) system call.
26 *
27 * USAGE:  <for command-line>
28 *  setrlimit02 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
29 *     where,  -c n : Run n copies concurrently.
30 *             -e   : Turn on errno logging.
31 *             -i n : Execute test n times.
32 *             -I x : Execute test for x seconds.
33 *             -P x : Pause for x seconds between iterations.
34 *             -t   : Turn on syscall timing.
35 *
36 * HISTORY
37 *	07/2001 Ported by Wayne Boyer
38 *
39 * RESTRICTIONS
40 *	NONE
41 */
42#include <sys/time.h>
43#include <sys/resource.h>
44#include <unistd.h>
45#include <errno.h>
46#include <pwd.h>
47#include "test.h"
48
49char *TCID = "setrlimit02";
50
51char nobody_uid[] = "nobody";
52struct passwd *ltpuser;
53
54struct rlimit rlim;
55
56void setup();
57void cleanup();
58
59struct test_case_t {
60	int resource;
61	struct rlimit *rlim;
62	int error;
63} TC[] = {
64#if !defined(UCLINUX)
65	/* rlim points outside the process address space - EFAULT */
66	{
67	RLIMIT_NOFILE, (void *)-1, EFAULT},
68#endif
69	    /* the resource is invalid - EINVAL */
70	{
71	-1, &rlim, EINVAL},
72	    /* a non-root user attemps to increase the rlim_max value - EPERM */
73	{
74	RLIMIT_NOFILE, &rlim, EPERM}
75};
76
77int TST_TOTAL = ARRAY_SIZE(TC);
78
79int main(int ac, char **av)
80{
81	int lc;
82	int i;
83
84	tst_parse_opts(ac, av, NULL, NULL);
85
86	setup();
87
88	for (lc = 0; TEST_LOOPING(lc); lc++) {
89
90		tst_count = 0;
91
92		/* loop through the test cases */
93		for (i = 0; i < TST_TOTAL; i++) {
94
95			TEST(setrlimit(TC[i].resource, TC[i].rlim));
96
97			if (TEST_RETURN != -1) {
98				tst_resm(TFAIL, "call succeeded unexpectedly");
99				continue;
100			}
101
102			if (TEST_ERRNO == TC[i].error) {
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), TC[i].error);
110			}
111		}
112	}
113	cleanup();
114
115	tst_exit();
116
117}
118
119/*
120 * setup() - performs all ONE TIME setup for this test.
121 */
122void setup(void)
123{
124	tst_require_root(NULL);
125
126	tst_sig(NOFORK, DEF_HANDLER, cleanup);
127
128	TEST_PAUSE;
129
130	/* Switch to nobody user for correct error code collection */
131	ltpuser = getpwnam(nobody_uid);
132	if (setuid(ltpuser->pw_uid) == -1) {
133		tst_resm(TINFO, "setuid failed to "
134			 "to set the effective uid to %d", ltpuser->pw_uid);
135		perror("setuid");
136	}
137
138	/* set an illegal value for a non-root user - test #3 - EPERM */
139	getrlimit(RLIMIT_NOFILE, &rlim);
140	rlim.rlim_max++;
141}
142
143/*
144 * cleanup() - performs all ONE TIME cleanup for this test at
145 *	       completion or premature exit.
146 */
147void cleanup(void)
148{
149
150}
151