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 #include "safe_macros.h"
81
82 #define NUM_BYTES 3
83 #define TURN_ON 1
84 #define TURN_OFF 0
85 #define EXP_RET_VAL -1
86 #ifndef IO_BITMAP_BITS
87 #define IO_BITMAP_BITS 1024 /* set to default value since some H/W may not support 0x10000 even with a 2.6.8 kernel */
88 #define IO_BITMAP_BITS_16 65536
89 #endif
90
91 static void setup();
92 static int setup1(void);
93 static void cleanup1();
94 static void cleanup();
95
96 static char nobody_uid[] = "nobody";
97 struct passwd *ltpuser;
98
99 struct test_cases_t {
100 long from; /* starting port address */
101 long num; /* no. of bytes from starting address */
102 int turn_on;
103 char *desc; /* test case description */
104 int exp_errno; /* expected error number */
105 };
106
107 int TST_TOTAL = 2;
108 struct test_cases_t *test_cases;
109
main(int ac,char ** av)110 int main(int ac, char **av)
111 {
112 int lc, i;
113
114 tst_parse_opts(ac, av, NULL, NULL);
115
116 setup();
117
118 for (lc = 0; TEST_LOOPING(lc); lc++) {
119
120 tst_count = 0;
121
122 for (i = 0; i < TST_TOTAL; ++i) {
123
124 if (i == 1) {
125 /* setup Non super-user for second test */
126 if (setup1()) {
127 /* setup1() failed, skip this test */
128 continue;
129 }
130 }
131
132 /* Test the system call */
133
134 TEST(ioperm(test_cases[i].from,
135 test_cases[i].num, test_cases[i].turn_on));
136
137 if ((TEST_RETURN == EXP_RET_VAL) &&
138 (TEST_ERRNO == test_cases[i].exp_errno)) {
139 tst_resm(TPASS, "Expected failure for %s, "
140 "errno: %d", test_cases[i].desc,
141 TEST_ERRNO);
142 } else {
143 tst_resm(TFAIL, "Unexpected results for %s ; "
144 "returned %ld (expected %d), errno %d "
145 "(expected errno %d)",
146 test_cases[i].desc,
147 TEST_RETURN, EXP_RET_VAL,
148 TEST_ERRNO, test_cases[i].exp_errno);
149 }
150
151 if (i == 1) {
152 /* revert back to super user */
153 cleanup1();
154 } else {
155 }
156 }
157
158 }
159
160 /* cleanup and exit */
161 cleanup();
162
163 tst_exit();
164
165 }
166
167 /* setup1() - set up non-super user for second test case */
setup1(void)168 int setup1(void)
169 {
170 /* switch to "nobody" user */
171 if (seteuid(ltpuser->pw_uid) == -1) {
172 tst_resm(TWARN, "Failed to set effective"
173 "uid to %d", ltpuser->pw_uid);
174 return 1;
175 }
176 return 0;
177 }
178
179 /* cleanup1() - reset to super user for second test case */
cleanup1(void)180 void cleanup1(void)
181 {
182 /* reset user as root */
183 SAFE_SETEUID(NULL, 0);
184 }
185
186 /* setup() - performs all ONE TIME setup for this test */
setup(void)187 void setup(void)
188 {
189 tst_require_root();
190
191 tst_sig(NOFORK, DEF_HANDLER, cleanup);
192
193 /* Check if "nobody" user id exists */
194 if ((ltpuser = getpwnam(nobody_uid)) == NULL) {
195 tst_brkm(TBROK, NULL, "\"nobody\" user id doesn't exist");
196 }
197
198 /*
199 * The value of IO_BITMAP_BITS (include/asm-i386/processor.h) changed
200 * from kernel 2.6.8 to permit 16-bits (65536) ioperm
201 *
202 * Ricky Ng-Adam, rngadam@yahoo.com
203 * */
204 test_cases = malloc(sizeof(struct test_cases_t) * 2);
205 test_cases[0].num = NUM_BYTES;
206 test_cases[0].turn_on = TURN_ON;
207 test_cases[0].desc = "Invalid I/O address";
208 test_cases[0].exp_errno = EINVAL;
209 test_cases[1].num = NUM_BYTES;
210 test_cases[1].turn_on = TURN_ON;
211 test_cases[1].desc = "Non super-user";
212 test_cases[1].exp_errno = EPERM;
213 if ((tst_kvercmp(2, 6, 8) < 0) || (tst_kvercmp(2, 6, 9) == 0)) {
214 /*try invalid ioperm on 1022, 1023, 1024 */
215 test_cases[0].from = (IO_BITMAP_BITS - NUM_BYTES) + 1;
216
217 /*try get valid ioperm on 1021, 1022, 1023 */
218 test_cases[1].from = IO_BITMAP_BITS - NUM_BYTES;
219 } else {
220 /*try invalid ioperm on 65534, 65535, 65536 */
221 test_cases[0].from = (IO_BITMAP_BITS_16 - NUM_BYTES) + 1;
222
223 /*try valid ioperm on 65533, 65534, 65535 */
224 test_cases[1].from = IO_BITMAP_BITS_16 - NUM_BYTES;
225 }
226
227 TEST_PAUSE;
228
229 }
230
cleanup(void)231 void cleanup(void)
232 {
233
234 }
235
236 #else /* __i386__ */
237
238 #include "test.h"
239 #include "safe_macros.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