vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 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 |
Wanlong Gao | fed9641 | 2012-10-24 10:10:29 +0800 | [diff] [blame] | 13 | * with this program; if not, write the Free Software Foundation, Inc., |
| 14 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 15 | * |
| 16 | */ |
| 17 | /********************************************************** |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 18 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 19 | * TEST IDENTIFIER : sched_setparam03 |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 20 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 21 | * EXECUTED BY : root / superuser |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 22 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 23 | * TEST TITLE : Checks functionality for sched_setparam(2) for pid!=0 |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 24 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 25 | * TEST CASE TOTAL : 1 |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 26 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 27 | * AUTHOR : Saji Kumar.V.R <saji.kumar@wipro.com> |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 28 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 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 test forks a child & changes its parent's scheduling priority |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 35 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 36 | * Setup: |
| 37 | * Setup signal handling. |
| 38 | * Pause for SIGUSR1 if option specified. |
| 39 | * Change scheduling policy to SCHED_FIFO |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 40 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 41 | * Test: |
| 42 | * Loop if the proper options are given. |
| 43 | * Fork a child |
| 44 | * |
| 45 | * CHILD: |
| 46 | * Changes scheduling priority for parent |
| 47 | * |
| 48 | * PARENT: |
| 49 | * If scheduling priority is set properly, |
| 50 | * TEST passed |
| 51 | * else |
| 52 | * TEST failed |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 53 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 54 | * Cleanup: |
| 55 | * Print errno log and/or timing stats if options given |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 56 | * |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 57 | * USAGE: <for command-line> |
| 58 | * sched_setparam03 [-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 | |
Garrett Cooper | e57b3f7 | 2010-12-19 08:46:29 -0800 | [diff] [blame] | 71 | #include <err.h> |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 72 | #include <errno.h> |
| 73 | #include <sched.h> |
| 74 | #include <sys/wait.h> |
| 75 | #include "test.h" |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 76 | |
| 77 | #define NEW_PRIORITY 5 |
| 78 | |
| 79 | static void setup(); |
| 80 | static void cleanup(); |
| 81 | static int verify_priority(); |
| 82 | |
Cyril Hrubis | fdce7d5 | 2013-04-04 18:35:48 +0200 | [diff] [blame] | 83 | char *TCID = "sched_setparam03"; |
| 84 | int TST_TOTAL = 1; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 85 | |
| 86 | static struct sched_param param = { NEW_PRIORITY }; |
| 87 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 88 | int main(int ac, char **av) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 89 | { |
| 90 | |
Cyril Hrubis | 89af32a | 2012-10-24 16:39:11 +0200 | [diff] [blame] | 91 | int lc; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 92 | const char *msg; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 93 | int status; |
| 94 | pid_t child_pid; |
| 95 | |
Garrett Cooper | 5374050 | 2010-12-16 00:04:01 -0800 | [diff] [blame] | 96 | if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
Garrett Cooper | 60fa801 | 2010-11-22 13:50:58 -0800 | [diff] [blame] | 97 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 98 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 99 | setup(); |
| 100 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 101 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 102 | |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 103 | tst_count = 0; |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 104 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 105 | switch (child_pid = FORK_OR_VFORK()) { |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 106 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 107 | case -1: |
| 108 | /* fork() failed */ |
| 109 | tst_resm(TFAIL, "fork() failed"); |
| 110 | continue; |
subrata_modak | 4bb656a | 2009-02-26 12:02:09 +0000 | [diff] [blame] | 111 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 112 | case 0: |
| 113 | /* Child */ |
| 114 | |
| 115 | /* |
| 116 | * Call sched_setparam(2) with pid = getppid() so that |
| 117 | * it will set the scheduling parameters for parent |
| 118 | * process |
| 119 | */ |
| 120 | TEST(sched_setparam(getppid(), ¶m)); |
| 121 | |
| 122 | if (TEST_RETURN == -1) { |
Garrett Cooper | e57b3f7 | 2010-12-19 08:46:29 -0800 | [diff] [blame] | 123 | err(0, "sched_setparam returned %ld", |
| 124 | TEST_RETURN); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 125 | } |
| 126 | exit(1); |
| 127 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 128 | default: |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 129 | /* Parent */ |
| 130 | if ((waitpid(child_pid, &status, 0)) < 0) { |
| 131 | tst_resm(TFAIL, "wait() failed"); |
| 132 | continue; |
| 133 | } |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 134 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 135 | /* |
| 136 | * Verify that parent's scheduling priority has |
| 137 | * changed. |
| 138 | */ |
| 139 | if ((WIFEXITED(status)) && (WEXITSTATUS(status)) && |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 140 | (verify_priority())) { |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 141 | tst_resm(TPASS, "Test Passed"); |
| 142 | } else { |
| 143 | tst_resm(TFAIL, "Test Failed"); |
| 144 | } |
| 145 | } |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 146 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 147 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 148 | cleanup(); |
Garrett Cooper | e57b3f7 | 2010-12-19 08:46:29 -0800 | [diff] [blame] | 149 | tst_exit(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 150 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 151 | |
| 152 | /* setup() - performs all ONE TIME setup for this test */ |
Mike Frysinger | c57fba5 | 2014-04-09 18:56:30 -0400 | [diff] [blame] | 153 | void setup(void) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 154 | { |
| 155 | struct sched_param p = { 1 }; |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 156 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 157 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 158 | |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 159 | TEST_PAUSE; |
| 160 | |
| 161 | /* Change scheduling policy to SCHED_FIFO */ |
| 162 | if ((sched_setscheduler(0, SCHED_FIFO, &p)) == -1) { |
| 163 | tst_brkm(TBROK, cleanup, "sched_setscheduler() failed"); |
| 164 | } |
| 165 | |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 166 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 167 | |
| 168 | /* |
| 169 | *cleanup() - performs all ONE TIME cleanup for this test at |
| 170 | * completion or premature exit. |
| 171 | */ |
Mike Frysinger | c57fba5 | 2014-04-09 18:56:30 -0400 | [diff] [blame] | 172 | void cleanup(void) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 173 | { |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 174 | } |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 175 | |
| 176 | /* |
| 177 | * verify_priority() - This function checks whether the priority is |
| 178 | * set correctly |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 179 | */ |
Mike Frysinger | c57fba5 | 2014-04-09 18:56:30 -0400 | [diff] [blame] | 180 | int verify_priority(void) |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 181 | { |
| 182 | struct sched_param p; |
| 183 | |
| 184 | if ((sched_getparam(0, &p)) == 0) { |
| 185 | if (p.sched_priority == NEW_PRIORITY) { |
| 186 | return 1; |
| 187 | } else { |
| 188 | tst_resm(TWARN, "sched_getparam() returned priority" |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 189 | " value as %d", p.sched_priority); |
vapier | d13d74b | 2006-02-11 07:24:00 +0000 | [diff] [blame] | 190 | return 0; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | tst_resm(TWARN, "sched_getparam() failed"); |
| 195 | return 0; |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 196 | } |