1 /*
2 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * You should have received a copy of the GNU General Public License along
13 * with this program; if not, write the Free Software Foundation, Inc.,
14 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
15 *
16 */
17 /**********************************************************
18 *
19 * TEST IDENTIFIER : ioperm02
20 *
21 * EXECUTED BY : superuser
22 *
23 * TEST TITLE : Tests for error conditions
24 *
25 * TEST CASE TOTAL : 2
26 *
27 * AUTHOR : Subhab Biwas <subhabrata.biswas@wipro.com>
28 *
29 * SIGNALS
30 * Uses SIGUSR1 to pause before test if option set.
31 * (See the parse_opts(3) man page).
32 *
33 * DESCRIPTION
34 * Verify that
35 * 1) ioperm(2) returns -1 and sets errno to EINVAL for I/O port
36 * address greater than 0x3ff.
37 * 2) ioperm(2) returns -1 and sets errno to EPERM if the current
38 * user is not the super-user.
39 *
40 * Setup:
41 * Setup signal handling.
42 * Set expected errnos for logging
43 * Pause for SIGUSR1 if option specified.
44 *
45 * Test:
46 * Loop if the proper options are given.
47 * Execute system call
48 * Check return code and error number, if matching,
49 * Issue PASS message
50 * Otherwise,
51 * Issue FAIL message
52 * Perform testcase specific cleanup (if needed)
53 *
54 * Cleanup:
55 * Print errno log and/or timing stats if options given
56 *
57 * USAGE: <for command-line>
58 * ioperm02 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
59 * where, -c n : Run n copies concurrently.
60 * -e : Turn on errno logging.
61 * -h : Show help screen
62 * -f : Turn off functional testing
63 * -i n : Execute test n times.
64 * -I x : Execute test for x seconds.
65 * -p : Pause for SIGUSR1 before starting
66 * -P x : Pause for x seconds between iterations.
67 * -t : Turn on syscall timing.
68 *
69 ****************************************************************/
70
71 char *TCID = "ioperm02";
72
73 #if defined __i386__ || defined(__x86_64__)
74
75 #include <errno.h>
76 #include <unistd.h>
77 #include <sys/io.h>
78 #include <pwd.h>
79 #include "test.h"
80
81 #define NUM_BYTES 3
82 #define TURN_ON 1
83 #define TURN_OFF 0
84 #define EXP_RET_VAL -1
85 #ifndef IO_BITMAP_BITS
86 #define IO_BITMAP_BITS 1024 /* set to default value since some H/W may not support 0x10000 even with a 2.6.8 kernel */
87 #define IO_BITMAP_BITS_16 65536
88 #endif
89
90 static void setup();
91 static int setup1(void);
92 static void cleanup1();
93 static void cleanup();
94
95 static char nobody_uid[] = "nobody";
96 struct passwd *ltpuser;
97
98 struct test_cases_t {
99 long from; /* starting port address */
100 long num; /* no. of bytes from starting address */
101 int turn_on;
102 char *desc; /* test case description */
103 int exp_errno; /* expected error number */
104 };
105
106 int TST_TOTAL = 2;
107 struct test_cases_t *test_cases;
108
main(int ac,char ** av)109 int main(int ac, char **av)
110 {
111 int lc, i;
112
113 tst_parse_opts(ac, av, NULL, NULL);
114
115 setup();
116
117 for (lc = 0; TEST_LOOPING(lc); lc++) {
118
119 tst_count = 0;
120
121 for (i = 0; i < TST_TOTAL; ++i) {
122
123 if (i == 1) {
124 /* setup Non super-user for second test */
125 if (setup1()) {
126 /* setup1() failed, skip this test */
127 continue;
128 }
129 }
130
131 /* Test the system call */
132
133 TEST(ioperm(test_cases[i].from,
134 test_cases[i].num, test_cases[i].turn_on));
135
136 if ((TEST_RETURN == EXP_RET_VAL) &&
137 (TEST_ERRNO == test_cases[i].exp_errno)) {
138 tst_resm(TPASS, "Expected failure for %s, "
139 "errno: %d", test_cases[i].desc,
140 TEST_ERRNO);
141 } else {
142 tst_resm(TFAIL, "Unexpected results for %s ; "
143 "returned %ld (expected %d), errno %d "
144 "(expected errno %d)",
145 test_cases[i].desc,
146 TEST_RETURN, EXP_RET_VAL,
147 TEST_ERRNO, test_cases[i].exp_errno);
148 }
149
150 if (i == 1) {
151 /* revert back to super user */
152 cleanup1();
153 } else {
154 }
155 }
156
157 }
158
159 /* cleanup and exit */
160 cleanup();
161
162 tst_exit();
163
164 }
165
166 /* setup1() - set up non-super user for second test case */
setup1(void)167 int setup1(void)
168 {
169 /* switch to "nobody" user */
170 if (seteuid(ltpuser->pw_uid) == -1) {
171 tst_resm(TWARN, "Failed to set effective"
172 "uid to %d", ltpuser->pw_uid);
173 return 1;
174 }
175 return 0;
176 }
177
178 /* cleanup1() - reset to super user for second test case */
cleanup1(void)179 void cleanup1(void)
180 {
181 /* reset user as root */
182 if (seteuid(0) == -1) {
183 tst_brkm(TBROK, NULL, "Failed to set uid as root");
184 }
185 }
186
187 /* setup() - performs all ONE TIME setup for this test */
setup(void)188 void setup(void)
189 {
190 tst_require_root();
191
192 tst_sig(NOFORK, DEF_HANDLER, cleanup);
193
194 /* Check if "nobody" user id exists */
195 if ((ltpuser = getpwnam(nobody_uid)) == NULL) {
196 tst_brkm(TBROK, NULL, "\"nobody\" user id doesn't exist");
197 }
198
199 /*
200 * The value of IO_BITMAP_BITS (include/asm-i386/processor.h) changed
201 * from kernel 2.6.8 to permit 16-bits (65536) ioperm
202 *
203 * Ricky Ng-Adam, rngadam@yahoo.com
204 * */
205 test_cases = malloc(sizeof(struct test_cases_t) * 2);
206 test_cases[0].num = NUM_BYTES;
207 test_cases[0].turn_on = TURN_ON;
208 test_cases[0].desc = "Invalid I/O address";
209 test_cases[0].exp_errno = EINVAL;
210 test_cases[1].num = NUM_BYTES;
211 test_cases[1].turn_on = TURN_ON;
212 test_cases[1].desc = "Non super-user";
213 test_cases[1].exp_errno = EPERM;
214 if ((tst_kvercmp(2, 6, 8) < 0) || (tst_kvercmp(2, 6, 9) == 0)) {
215 /*try invalid ioperm on 1022, 1023, 1024 */
216 test_cases[0].from = (IO_BITMAP_BITS - NUM_BYTES) + 1;
217
218 /*try get valid ioperm on 1021, 1022, 1023 */
219 test_cases[1].from = IO_BITMAP_BITS - NUM_BYTES;
220 } else {
221 /*try invalid ioperm on 65534, 65535, 65536 */
222 test_cases[0].from = (IO_BITMAP_BITS_16 - NUM_BYTES) + 1;
223
224 /*try valid ioperm on 65533, 65534, 65535 */
225 test_cases[1].from = IO_BITMAP_BITS_16 - NUM_BYTES;
226 }
227
228 TEST_PAUSE;
229
230 }
231
cleanup(void)232 void cleanup(void)
233 {
234
235 }
236
237 #else /* __i386__ */
238
239 #include "test.h"
240
241 int TST_TOTAL = 0;
242
main(void)243 int main(void)
244 {
245 tst_resm(TPASS,
246 "LSB v1.3 does not specify ioperm() for this architecture.");
247 tst_exit();
248 }
249
250 #endif /* __i386__ */
251