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 : iopl01
20 *
21 * EXECUTED BY : superuser
22 *
23 * TEST TITLE : Basic test for iopl(2)
24 *
25 * TEST CASE TOTAL : 4
26 *
27 * AUTHOR : Subhab Biswas <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 * This is a Phase I test for the iopl(2) system call.
35 * It is intended to provide a limited exposure of the system call.
36 *
37 * Setup:
38 * Setup signal handling.
39 * Test caller is superuser
40 * Pause for SIGUSR1 if option specified.
41 *
42 * Test:
43 * Loop if the proper options are given.
44 * Execute system call
45 * Check return code, if system call failed (return=-1)
46 * Issue FAIL message with errno.
47 * Otherwise, Issue PASS message.
48 *
49 * Cleanup:
50 * Print errno log and/or timing stats if options given
51 *
52 * USAGE: <for command-line>
53 * iopl01 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
54 * where, -c n : Run n copies concurrently.
55 * -e : Turn on errno logging.
56 * -h : Show help screen
57 * -f : Turn off functional testing
58 * -i n : Execute test n times.
59 * -I x : Execute test for x seconds.
60 * -p : Pause for SIGUSR1 before starting
61 * -P x : Pause for x seconds between iterations.
62 * -t : Turn on syscall timing.
63 *
64 ****************************************************************/
65
66 char *TCID = "iopl01";
67
68 #if defined __i386__ || defined(__x86_64__)
69
70 #include <errno.h>
71 #include <unistd.h>
72 #include <sys/io.h>
73
74 #include "test.h"
75
76 static void setup();
77 static void cleanup();
78
79 int TST_TOTAL = 4;
80
81 int level; /* I/O privilege level of the process */
82
main(int ac,char ** av)83 int main(int ac, char **av)
84 {
85
86 int lc;
87
88 tst_parse_opts(ac, av, NULL, NULL);
89
90 setup();
91
92 for (lc = 0; TEST_LOOPING(lc); lc++) {
93
94 tst_count = 0;
95
96 /*
97 * Test the system call for possible privelege levels.
98 * As the privelge level for a normal process is 0,
99 * start by setting/changing the level to 0.
100 */
101 for (level = 0; level < TST_TOTAL; ++level) {
102
103 TEST(iopl(level));
104
105 if (TEST_RETURN == -1) {
106 tst_resm(TFAIL, "iopl() failed for level %d, "
107 "errno=%d : %s", level,
108 TEST_ERRNO, strerror(TEST_ERRNO));
109 } else {
110 tst_resm(TPASS, "iopl() passed for level %d, "
111 "returned %ld", level, TEST_RETURN);
112 }
113 }
114 }
115
116 /* cleanup and exit */
117 cleanup();
118 tst_exit();
119
120 }
121
122 /* setup() - performs all ONE TIME setup for this test */
setup(void)123 void setup(void)
124 {
125 tst_require_root();
126
127 tst_sig(NOFORK, DEF_HANDLER, cleanup);
128
129 TEST_PAUSE;
130
131 }
132
133 /*
134 *cleanup() - performs all ONE TIME cleanup for this test at
135 * completion or premature exit.
136 */
cleanup(void)137 void cleanup(void)
138 {
139
140 /*
141 * back to I/O privilege for normal process.
142 */
143 if (iopl(0) == -1) {
144 tst_resm(TWARN, "iopl() cleanup failed");
145 }
146
147 }
148
149 #else /* __i386__ */
150
151 #include "test.h"
152
153 int TST_TOTAL = 0;
154
main(void)155 int main(void)
156 {
157 tst_resm(TPASS,
158 "LSB v1.3 does not specify iopl() for this architecture.");
159 tst_exit();
160 }
161
162 #endif /* __i386__ */
163