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 * sysctl04.c
23 *
24 * DESCRIPTION
25 * Testcase to check that sysctl(2) sets errno to ENOTDIR
26 *
27 * ALGORITHM
28 * 1. Call sysctl(2) with sc_nlen set to 0, and expect ENOTDIR to be set.
29 * 2. Call sysctl(2) with sc_nlen greater than CTL_MAXNAME, and expect
30 * ENOTDIR to be set in the errno.
31 *
32 * USAGE: <for command-line>
33 * sysctl04 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
34 * where, -c n : Run n copies concurrently.
35 * -e : Turn on errno logging.
36 * -i n : Execute test n times.
37 * -I x : Execute test for x seconds.
38 * -P x : Pause for x seconds between iterations.
39 * -t : Turn on syscall timing.
40 *
41 * HISTORY
42 * 07/2001 Ported by Wayne Boyer
43 *
44 * RESTRICTIONS
45 * None
46 */
47
48 #include "test.h"
49 #include <stdio.h>
50 #include <errno.h>
51 #include <unistd.h>
52 #include <linux/unistd.h>
53 #include <linux/sysctl.h>
54
55 char *TCID = "sysctl04";
56
57 /* This is an older/deprecated syscall that newer arches are omitting */
58 #ifdef __NR_sysctl
59
60 int TST_TOTAL = 2;
61
sysctl(int * name,int nlen,void * oldval,size_t * oldlenp,void * newval,size_t newlen)62 int sysctl(int *name, int nlen, void *oldval, size_t * oldlenp,
63 void *newval, size_t newlen)
64 {
65 struct __sysctl_args args =
66 { name, nlen, oldval, oldlenp, newval, newlen };
67 return syscall(__NR__sysctl, &args);
68 }
69
70 #define OSNAMESZ 100
71
72 void setup(void);
73 void cleanup(void);
74
75 struct test_case_t {
76 int size;
77 int error;
78 } TC[] = {
79 /* comment goes here */
80 {
81 0, ENOTDIR},
82 /* comment goes here */
83 {
84 CTL_MAXNAME + 1, ENOTDIR}
85 };
86
main(int ac,char ** av)87 int main(int ac, char **av)
88 {
89 int lc;
90
91 char osname[OSNAMESZ];
92 int i;
93 size_t osnamelth;
94 int name[] = { CTL_KERN, KERN_OSREV };
95
96 tst_parse_opts(ac, av, NULL, NULL);
97
98 setup();
99
100 osnamelth = sizeof(osname);
101
102 for (lc = 0; TEST_LOOPING(lc); lc++) {
103
104 /* reset tst_count in case we are looping */
105 tst_count = 0;
106
107 /* loop through the test cases */
108 for (i = 0; i < TST_TOTAL; i++) {
109
110 TEST(sysctl(name, 0, osname, &osnamelth, 0, 0));
111
112 if (TEST_RETURN != -1) {
113 tst_resm(TFAIL, "call succeeded unexpectedly");
114 continue;
115 }
116
117 if (TEST_ERRNO == TC[i].error) {
118 tst_resm(TPASS, "expected failure - "
119 "errno = %d : %s", TEST_ERRNO,
120 strerror(TEST_ERRNO));
121 } else if (TEST_ERRNO == ENOSYS) {
122 tst_resm(TCONF,
123 "You may need to make CONFIG_SYSCTL_SYSCALL=y"
124 " to your kernel config.");
125 } else {
126 tst_resm(TFAIL, "unexpected error - %d : %s - "
127 "expected %d", TEST_ERRNO,
128 strerror(TEST_ERRNO), TC[i].error);
129 }
130 }
131 }
132 cleanup();
133
134 tst_exit();
135 }
136
137 /*
138 * setup() - performs all ONE TIME setup for this test.
139 */
setup(void)140 void setup(void)
141 {
142
143 tst_sig(NOFORK, DEF_HANDLER, cleanup);
144
145 TEST_PAUSE;
146 }
147
148 /*
149 * cleanup() - performs all ONE TIME cleanup for this test at
150 * completion or premature exit.
151 */
cleanup(void)152 void cleanup(void)
153 {
154
155 }
156
157 #else
158 int TST_TOTAL = 0;
159
main(void)160 int main(void)
161 {
162
163 tst_brkm(TCONF, NULL,
164 "This test needs a kernel that has sysctl syscall.");
165 }
166 #endif
167