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
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17 /*******************************************************************
18 *
19 * TEST IDENTIFIER : sched_getparam03
20 *
21 * EXECUTED BY : anyone
22 *
23 * TEST TITLE : testing error conditions for sched_getparam(2)
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_getparam(2) returns -1 and sets errno to ESRCH if the
36 * process with specified pid could not be found
37 * 2) sched_getparam(2) returns -1 and sets errno to EINVAL if
38 * the parameter pid is an invalid value (-1)
39 * 3) sched_getparam(2) returns -1 and sets errno to EINVAL if the
40 * parameter p is an invalid address
41 *
42 * ALGORITHM
43 * Setup:
44 * Setup signal handling.
45 * Pause for SIGUSR1 if option specified.
46 *
47 * Test:
48 * Loop if the proper options are given.
49 * Execute system call
50 * Check return code, if (system call failed (return=-1)) &
51 * (errno set == expected errno)
52 * Issue sys call fails with expected return value and errno.
53 * Otherwise,
54 * Issue sys call returns unexpected value.
55 *
56 * Cleanup:
57 * Print errno log and/or timing stats if options given
58 *
59 * USAGE: <for command-line>
60 * sched_getparam03 [-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 "test.h"
74
75 #include <errno.h>
76 #include <sched.h>
77
78 #define LARGE_PID 999999
79
80 static void cleanup(void);
81 static void setup(void);
82
83 static struct sched_param param;
84
85 char *TCID = "sched_getparam03";
86
87 static pid_t unused_pid;
88 static pid_t zero_pid;
89 static pid_t inval_pid = -1;
90
91 static struct test_case_t {
92 char *desc;
93 pid_t *pid;
94 struct sched_param *p;
95 int exp_errno;
96 char err_desc[10];
97 } test_cases[] = {
98 {
99 "test with non-existing pid", &unused_pid, ¶m, ESRCH, "ESRCH"}, {
100 "test invalid pid value", &inval_pid, ¶m, EINVAL, "EINVAL"}, {
101 "test with invalid address for p", &zero_pid, NULL, EINVAL, "EINVAL"},};
102
103 int TST_TOTAL = sizeof(test_cases) / sizeof(test_cases[0]);
104
main(int ac,char ** av)105 int main(int ac, char **av)
106 {
107 int lc, ind;
108
109 tst_parse_opts(ac, av, NULL, NULL);
110
111 setup(); /* global setup */
112
113 /* The following loop checks looping state if -i option given */
114 for (lc = 0; TEST_LOOPING(lc); lc++) {
115 /* reset tst_count in case we are looping */
116 tst_count = 0;
117
118 for (ind = 0; ind < TST_TOTAL; ind++) {
119
120 /* Call sched_getparam(2) to test different test
121 * conditions. verify that it fails with -1 return
122 * value and sets appropriate errno.
123 */
124 TEST(sched_getparam(*(test_cases[ind].pid),
125 test_cases[ind].p));
126
127 if ((TEST_RETURN == -1) &&
128 (TEST_ERRNO == test_cases[ind].exp_errno)) {
129 tst_resm(TPASS, "expected failure; Got %s",
130 test_cases[ind].err_desc);
131 } else {
132 tst_resm(TFAIL, "Call failed to produce "
133 "expected error; Expected errno: %d "
134 "Got : %d, %s",
135 test_cases[ind].exp_errno,
136 TEST_ERRNO, strerror(TEST_ERRNO));
137 }
138 }
139 }
140
141 cleanup();
142 tst_exit();
143
144 }
145
146 /*
147 * setup() - performs all the ONE TIME setup for this test.
148 */
setup(void)149 void setup(void)
150 {
151 unused_pid = tst_get_unused_pid(cleanup);
152
153 tst_sig(NOFORK, DEF_HANDLER, cleanup);
154
155 TEST_PAUSE;
156
157 }
158
159 /*
160 * cleanup() - performs all the ONE TIME cleanup for this test at completion
161 * or premature exit.
162 */
cleanup(void)163 void cleanup(void)
164 {
165 }
166