1 #include <signal.h> 2 #include <stdio.h> 3 #include "posixtest.h" 4 5 /* 6 7 * Copyright (c) 2002, Intel Corporation. All rights reserved. 8 * Created by: rolla.n.selbak REMOVE-THIS AT intel DOT com 9 * This file is licensed under the GPL license. For the full content 10 * of this license, see the COPYING file at the top level of this 11 * source tree. 12 13 * Test that the sigwait() function. 14 * If prior to the call to sigwait() there are multiple pending instances of 15 * a single signal number (and it is implementation-defined that the signal 16 * number DOES NOT support queued signals), then there should be no remaining 17 * pending signals for that signal number. 18 * Steps are: 19 * 1) Block a signal that doesn't support queueing from delivery. 20 * 2) Raise that signal 4 times. 21 * 3) Call sigwait() 22 * 4) Verify it cleared the signal from the pending signals and there 23 * are no signals left in the pending list. 24 * 25 */ 26 27 int main(void) 28 { 29 sigset_t newmask, pendingset; 30 int sig; 31 32 /* Empty set of blocked signals */ 33 if ((sigemptyset(&newmask) == -1) || (sigemptyset(&pendingset) == -1)) { 34 printf("Error in sigemptyset()\n"); 35 return PTS_UNRESOLVED; 36 } 37 38 /* Add SIGUSR2 to the set of blocked signals */ 39 if (sigaddset(&newmask, SIGUSR2) == -1) { 40 perror("Error in sigaddset()\n"); 41 return PTS_UNRESOLVED; 42 } 43 44 /* Block SIGUSR2 */ 45 if (sigprocmask(SIG_SETMASK, &newmask, NULL) == -1) { 46 printf("Error in sigprocmask()\n"); 47 return PTS_UNRESOLVED; 48 } 49 50 /* Send SIGUSR2 signal 4 times to this process. Since it is blocked, 51 * it should be pending. */ 52 if (raise(SIGUSR2) != 0) { 53 printf("Could not raise SIGUSR2\n"); 54 return PTS_UNRESOLVED; 55 } 56 if (raise(SIGUSR2) != 0) { 57 printf("Could not raise SIGUSR2\n"); 58 return PTS_UNRESOLVED; 59 } 60 if (raise(SIGUSR2) != 0) { 61 printf("Could not raise SIGUSR2\n"); 62 return PTS_UNRESOLVED; 63 } 64 if (raise(SIGUSR2) != 0) { 65 printf("Could not raise SIGUSR2\n"); 66 return PTS_UNRESOLVED; 67 } 68 69 /* Obtain a set of pending signals */ 70 if (sigpending(&pendingset) == -1) { 71 printf("Error calling sigpending()\n"); 72 return PTS_UNRESOLVED; 73 } 74 75 /* Make sure SIGUSR2 is pending */ 76 if (sigismember(&pendingset, SIGUSR2) == 0) { 77 printf("Error: signal SIGUSR2 not pending\n"); 78 return PTS_UNRESOLVED; 79 } 80 81 /* Call sigwait */ 82 if (sigwait(&newmask, &sig) != 0) { 83 printf("Error in sigwait\n"); 84 return PTS_UNRESOLVED; 85 } 86 87 /* Make sure SIGUSR2 is not in the pending list anymore */ 88 if (sigpending(&pendingset) == -1) { 89 printf("Error calling sigpending()\n"); 90 return PTS_UNRESOLVED; 91 } 92 93 if (sigismember(&pendingset, SIGUSR2) == 1) { 94 printf("Test FAILED\n"); 95 return PTS_FAIL; 96 } 97 98 printf("Test PASSED\n"); 99 return PTS_PASS; 100 101 } 102
