1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * Test Name: nice02
22 *
23 * Test Description:
24 * Verify that any user can successfully increase the nice value of
25 * the process by passing a higher increment value (> max. applicable limits)
26 * to nice() system call.
27 *
28 * Expected Result:
29 * nice() should return value 0 on success and root user should succeed to
30 * increase the nice value of the test process.
31 *
32 * Algorithm:
33 * Setup:
34 * Setup signal handling.
35 * Pause for SIGUSR1 if option specified.
36 *
37 * Test:
38 * Loop if the proper options are given.
39 * Execute system call
40 * Check return code, if system call failed (return=-1)
41 * Log the errno and Issue a FAIL message.
42 * Otherwise,
43 * Verify the Functionality of system call
44 * if successful,
45 * Issue Functionality-Pass message.
46 * Otherwise,
47 * Issue Functionality-Fail message.
48 * Cleanup:
49 * Print errno log and/or timing stats if options given
50 *
51 * Usage: <for command-line>
52 * nice02 [-c n] [-f] [-i n] [-I x] [-P x] [-t]
53 * where, -c n : Run n copies concurrently.
54 * -f : Turn off functionality Testing.
55 * -i n : Execute test n times.
56 * -I x : Execute test for x seconds.
57 * -P x : Pause for x seconds between iterations.
58 * -t : Turn on syscall timing.
59 *
60 * HISTORY
61 * 07/2001 Ported by Wayne Boyer
62 *
63 * RESTRICTIONS:
64 * none
65 */
66 #include <unistd.h>
67 #include <errno.h>
68 #include <fcntl.h>
69 #include <sys/time.h>
70 #include <sys/resource.h>
71
72 #include "test.h"
73
74 char *TCID = "nice02";
75 int TST_TOTAL = 1;
76
77 #define NICEINC 50
78
79 void setup(); /* Main setup function of test */
80 void cleanup(); /* cleanup function for the test */
81
main(int ac,char ** av)82 int main(int ac, char **av)
83 {
84 int lc;
85 int New_nice; /* priority of process after nice() */
86 int max_val; /* Maximum nice value per OS. */
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 * Call nice(2) with an 'incr' parameter set
98 * to a higher +ve value.
99 */
100 TEST(nice(NICEINC));
101
102 /* check return code */
103 if (TEST_RETURN == -1) {
104 tst_resm(TFAIL, "nice(%d) Failed, errno=%d : %s",
105 NICEINC, TEST_ERRNO, strerror(TEST_ERRNO));
106 continue;
107 }
108
109 /*
110 * Get the current priority of the test process.
111 */
112 errno = 0;
113 New_nice = getpriority(PRIO_PROCESS, 0);
114 if (New_nice == -1 && errno != 0) {
115 tst_brkm(TFAIL, cleanup, "Fail to get priority "
116 "of process after nice()");
117 }
118
119 /*
120 * Validate functionality of the nice().
121 *
122 * Default priority is 0, Max is 20.
123 */
124 max_val = 20;
125
126 if (New_nice != (max_val - 1)) {
127 tst_resm(TFAIL, "Priority of process : %d "
128 "doesn't match the expected:%d",
129 New_nice, (max_val - 1));
130 } else {
131 tst_resm(TPASS, "Functionality of nice(%d)"
132 " successful", NICEINC);
133 }
134 }
135
136 cleanup();
137 tst_exit();
138 }
139
140 /*
141 * setup() - performs all ONE TIME setup for this test.
142 */
setup(void)143 void setup(void)
144 {
145
146 tst_sig(NOFORK, DEF_HANDLER, cleanup);
147
148 TEST_PAUSE;
149 }
150
151 /*
152 * cleanup() - performs all ONE TIME cleanup for this test at
153 * completion or premature exit.
154 * Remove the test directory and testfile created in the setup.
155 */
cleanup(void)156 void cleanup(void)
157 {
158
159 }
160