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 : sched_rr_get_interval03
20 *
21 * EXECUTED BY : root / superuser
22 *
23 * TEST TITLE : Tests for error conditions
24 *
25 * TEST CASE TOTAL : 3
26 *
27 * AUTHOR : Saji Kumar.V.R <saji.kumar@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) sched_rr_get_interval() fails with errno set to EINVAL for an
36 * invalid pid
37 * 2) sched_rr_get_interval() fails with errno set to ESRCH if the
38 * process with specified pid does not exists
39 * 2) sched_rr_get_interval() fails with errno set to EFAULT if the
40 * address specified as &tp is invalid
41 *
42 * Setup:
43 * Setup signal handling.
44 * Set expected errors for logging.
45 * Pause for SIGUSR1 if option specified.
46 * Change scheduling policy to SCHED_RR
47 *
48 * Test:
49 * Loop if the proper options are given.
50 * Execute system call
51 * if call fails with expected errno,
52 * Test passed.
53 * Otherwise
54 * Test failed
55 *
56 * Cleanup:
57 * Print errno log and/or timing stats if options given
58 *
59 * USAGE: <for command-line>
60 * sched_rr_get_interval03 [-c n] [-e] [-i n] [-I x] [-P x] [-t] [-h] [-f] [-p]
61 * where, -c n : Run n copies concurrently.
62 * -e : Turn on errno logging.
63 * -h : Show help screen
64 * -f : Turn off functional testing
65 * -i n : Execute test n times.
66 * -I x : Execute test for x seconds.
67 * -p : Pause for SIGUSR1 before starting
68 * -P x : Pause for x seconds between iterations.
69 * -t : Turn on syscall timing.
70 *
71 ****************************************************************/
72
73 #include <errno.h>
74 #include <sched.h>
75 #include "test.h"
76
77 static void setup();
78 static void cleanup();
79
80 char *TCID = "sched_rr_get_interval03";
81 struct timespec tp;
82
83 static pid_t unused_pid;
84 static pid_t inval_pid = -1;
85 static pid_t zero_pid;
86
87 struct test_cases_t {
88 pid_t *pid;
89 struct timespec *tp;
90 int exp_errno;
91 } test_cases[] = {
92 {
93 &inval_pid, &tp, EINVAL}, {
94 &unused_pid, &tp, ESRCH},
95 #ifndef UCLINUX
96 /* Skip since uClinux does not implement memory protection */
97 {
98 &zero_pid, (struct timespec *)-1, EFAULT}
99 #endif
100 };
101
102 int TST_TOTAL = sizeof(test_cases) / sizeof(test_cases[0]);
103
main(int ac,char ** av)104 int main(int ac, char **av)
105 {
106
107 int lc, i;
108
109 tst_parse_opts(ac, av, NULL, NULL);
110
111 setup();
112
113 for (lc = 0; TEST_LOOPING(lc); lc++) {
114
115 tst_count = 0;
116
117 for (i = 0; i < TST_TOTAL; ++i) {
118 /*
119 * Call sched_rr_get_interval(2)
120 */
121 TEST(sched_rr_get_interval(*(test_cases[i].pid),
122 test_cases[i].tp));
123
124 if ((TEST_RETURN == -1) &&
125 (TEST_ERRNO == test_cases[i].exp_errno)) {
126 tst_resm(TPASS, "Test Passed");
127 } else {
128 tst_resm(TFAIL | TTERRNO, "Test Failed,"
129 " sched_rr_get_interval() returned %ld",
130 TEST_RETURN);
131 }
132 }
133 }
134
135 /* cleanup and exit */
136 cleanup();
137
138 tst_exit();
139
140 }
141
142 /* setup() - performs all ONE TIME setup for this test */
setup(void)143 void setup(void)
144 {
145 tst_require_root();
146 /*
147 * Initialize scheduling parameter structure to use with
148 * sched_setscheduler()
149 */
150 struct sched_param p = { 1 };
151
152 tst_sig(NOFORK, DEF_HANDLER, cleanup);
153
154 TEST_PAUSE;
155
156 /* Change scheduling policy to SCHED_RR */
157 if ((sched_setscheduler(0, SCHED_RR, &p)) == -1) {
158 tst_brkm(TBROK, cleanup, "sched_setscheduler() failed");
159 }
160
161 unused_pid = tst_get_unused_pid(cleanup);
162 }
163
164 /*
165 *cleanup() - performs all ONE TIME cleanup for this test at
166 * completion or premature exit.
167 */
cleanup(void)168 void cleanup(void)
169 {
170
171 }
172