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 * Test that clock_getres() sets errno=EINVAL if clock_id does not
9 * refer to a known clock.
10 */
11#include <errno.h>
12#include <stdio.h>
13#include <stdlib.h>
14#include <string.h>
15#include <time.h>
16#include <unistd.h>
17#include <sys/wait.h>
18#include "posixtest.h"
19
20static clockid_t get_invalid_clock_id()
21{
22#if _POSIX_CPUTIME == -1
23	printf("clock_getcpuclockid() not supported\n");
24	exit(PTS_UNTESTED);
25#else
26	clockid_t clockID;
27	int error;
28
29	if (sysconf(_SC_CPUTIME) == -1) {
30		printf("clock_getcpuclockid() not supported\n");
31		exit(PTS_UNTESTED);
32	}
33
34	int pid = fork();
35	if (pid < 0) {
36		perror("fork() failed");
37		exit(PTS_UNRESOLVED);
38	}
39
40	if (pid == 0) {
41		// child -- just wait a second
42		sleep(1);
43		exit(0);
44	}
45
46	// parent -- get the child's CPU clock ID
47	error = clock_getcpuclockid(pid, &clockID);
48	if (error != 0) {
49		printf("clock_getcpuclockid() failed: %s\n", strerror(error));
50		exit(PTS_UNRESOLVED);
51	}
52
53	// wait for the child
54	if (wait(NULL) != pid) {
55		perror("wait() failed");
56		exit(PTS_UNRESOLVED);
57	}
58
59	return clockID;
60#endif
61}
62
63int main(int argc, char *argv[])
64{
65	struct timespec res;
66	clockid_t invalidClockID;
67
68	invalidClockID = get_invalid_clock_id();
69
70	if (clock_getres(invalidClockID, &res) == -1) {
71		if (EINVAL == errno) {
72			printf("Test PASSED\n");
73			return PTS_PASS;
74		} else {
75			printf("errno != EINVAL\n");
76			return PTS_FAIL;
77		}
78	} else {
79		printf("clock_getres() did not return -1\n");
80		return PTS_UNRESOLVED;
81	}
82
83	return PTS_UNRESOLVED;
84}
85