1 /* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License version 2. 4 * 5 * This program is distributed in the hope that it will be useful, 6 * but WITHOUT ANY WARRANTY; without even the implied warranty of 7 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 8 * GNU General Public License for more details. 9 * 10 * 11 * Test that the policy and scheduling parameters remain unchanged when 12 * the sched_ss_max_repl is not within the inclusive range [1,SS_REPL_MAX] 13 * 14 * Test with a sched_ss_max_repl value of 0. 15 * Steps: 16 * 1. Get the old policy and priority. 17 * 2. Call sched_setscheduler with invalid args. 18 * 3. Check that the policy and priority have not changed. 19 * 20 * @pt:SS 21 */ 22 23 #include <errno.h> 24 #include <sched.h> 25 #include <stdio.h> 26 #include <unistd.h> 27 #include "posixtest.h" 28 29 #if defined(_POSIX_SPORADIC_SERVER)&&(_POSIX_SPORADIC_SERVER != -1) 30 31 int main(void) 32 { 33 int max_priority, old_priority, old_policy, new_policy; 34 struct sched_param param; 35 36 if (sched_getparam(getpid(), ¶m) == -1) { 37 perror("An error occurs when calling sched_getparam()"); 38 return PTS_UNRESOLVED; 39 } 40 old_priority = param.sched_priority; 41 42 old_policy = sched_getscheduler(getpid()); 43 if (old_policy == -1) { 44 perror("An error occurs when calling sched_getscheduler()"); 45 return PTS_UNRESOLVED; 46 } 47 48 /* Make sure that param.sched_priority != old_priority */ 49 max_priority = sched_get_priority_max(SCHED_SPORADIC); 50 param.sched_priority = (old_priority == max_priority) ? 51 sched_get_priority_min(SCHED_SPORADIC) : max_priority; 52 53 param.sched_ss_max_repl = 0; 54 55 sched_setscheduler(0, SCHED_SPORADIC, ¶m); 56 57 if (sched_getparam(getpid(), ¶m) != 0) { 58 perror("An error occurs when calling sched_getparam()"); 59 return PTS_UNRESOLVED; 60 } 61 62 new_policy = sched_getscheduler(getpid()); 63 if (new_policy == -1) { 64 perror("An error occurs when calling sched_getscheduler()"); 65 return PTS_UNRESOLVED; 66 } 67 68 if (old_policy == new_policy && old_priority == param.sched_priority) { 69 printf("Test PASSED\n"); 70 return PTS_PASS; 71 } 72 73 if (param.sched_priority != old_priority) { 74 printf("The param has changed\n"); 75 return PTS_FAIL; 76 } 77 if (new_policy != old_policy) { 78 printf("The policy has changed\n"); 79 return PTS_FAIL; 80 } 81 82 } 83 #else 84 int main(void) 85 { 86 printf("Does not support SS (SPORADIC SERVER)\n"); 87 return PTS_UNSUPPORTED; 88 } 89 #endif 90
