1 /*
2 * Copyright (c) 2002, Intel Corporation. All rights reserved.
3 * Created by: julie.n.fleischer REMOVE-THIS AT intel DOT com
4 * This file is licensed under the GPL license. For the full content
5 * of this license, see the COPYING file at the top level of this
6 * source tree.
7 *
8 * Regression test motivated by an LKML discussion. Test that nanosleep()
9 * can be interrupted and then continue.
10 */
11 #include <stdio.h>
12 #include <time.h>
13 #include <signal.h>
14 #include <unistd.h>
15 #include <sys/wait.h>
16 #include <stdlib.h>
17 #include "posixtest.h"
18
19 #define SLEEPSEC 5
20
21 #define CHILDPASS 0 //if interrupted, child will return 0
22 #define CHILDFAIL 1
23
main(void)24 int main(void)
25 {
26 int pid, slepts;
27 struct timespec tsbefore, tsafter;
28
29 if (clock_gettime(CLOCK_REALTIME, &tsbefore) != 0) {
30 perror("clock_gettime() did not return success\n");
31 return PTS_UNRESOLVED;
32 }
33
34 if ((pid = fork()) == 0) {
35 /* child here */
36 struct timespec tssleep;
37
38 tssleep.tv_sec = SLEEPSEC;
39 tssleep.tv_nsec = 0;
40 if (nanosleep(&tssleep, NULL) == 0) {
41 printf("nanosleep() returned success\n");
42 return CHILDPASS;
43 } else {
44 printf("nanosleep() did not return success\n");
45 return CHILDFAIL;
46 }
47 return CHILDFAIL;
48 } else {
49 /* parent here */
50 int i;
51
52 sleep(1);
53
54 if (kill(pid, SIGSTOP) != 0) {
55 printf("Could not raise SIGSTOP\n");
56 return PTS_UNRESOLVED;
57 }
58
59 if (kill(pid, SIGCONT) != 0) {
60 printf("Could not raise SIGCONT\n");
61 return PTS_UNRESOLVED;
62 }
63
64 if (wait(&i) == -1) {
65 perror("Error waiting for child to exit\n");
66 return PTS_UNRESOLVED;
67 }
68
69 if (!WIFEXITED(i)) {
70 printf("nanosleep() did not return 0\n");
71 return PTS_FAIL;
72 }
73
74 if (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) {
75 perror("Error in clock_gettime()\n");
76 return PTS_UNRESOLVED;
77 }
78
79 slepts = tsafter.tv_sec - tsbefore.tv_sec;
80
81 printf("Start %d sec; End %d sec\n", (int)tsbefore.tv_sec,
82 (int)tsafter.tv_sec);
83 if (slepts >= SLEEPSEC) {
84 printf("Test PASSED\n");
85 return PTS_PASS;
86 } else {
87 printf("nanosleep() did not sleep long enough\n");
88 return PTS_FAIL;
89 }
90
91 } //end fork
92
93 return PTS_UNRESOLVED;
94 }
95