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 sched_getparam() returns -1 on failure. 12 * 13 * The test create a child process which exit immediately and call 14 * sched_getparam with the pid of defunct child. 15 */ 16 #include <stdio.h> 17 #include <sched.h> 18 #include <errno.h> 19 #include <unistd.h> 20 #include <stdlib.h> 21 #include <sys/wait.h> 22 #include "posixtest.h" 23 24 int main(void) 25 { 26 27 struct sched_param param; 28 int result = -1, child_pid; 29 int stat_loc; 30 31 /* Create a child process which exit immediately */ 32 child_pid = fork(); 33 if (child_pid == -1) { 34 perror("fork failed"); 35 return PTS_UNRESOLVED; 36 } else if (child_pid == 0) { 37 exit(0); 38 } 39 40 /* Wait for the child process to exit */ 41 if (wait(&stat_loc) == -1) { 42 perror("wait failed"); 43 return PTS_UNRESOLVED; 44 } 45 46 /* Assume the pid is not yet reatributed to an other process */ 47 result = sched_getparam(child_pid, ¶m); 48 49 if (result == -1 && errno == ESRCH) { 50 printf("Test PASSED\n"); 51 return PTS_PASS; 52 } 53 if (result != -1) { 54 printf("returned code is not -1.\n"); 55 return PTS_FAIL; 56 } 57 if (errno != ESRCH) { 58 perror("errno is not ESRCH"); 59 return PTS_FAIL; 60 } else { 61 perror("Unresolved test error"); 62 return PTS_UNRESOLVED; 63 } 64 65 } 66
