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 priority remain unchanged when the sched_ss_low_priority
12 * member is not within the inclusive priority range for the sporadic server
13 * policy.
14 *
15 * @pt:SS
16 */
17
18#include <sched.h>
19#include <stdio.h>
20#include <unistd.h>
21#include "posixtest.h"
22
23#if defined(_POSIX_SPORADIC_SERVER) && (_POSIX_SPORADIC_SERVER != -1)
24
25int main(void)
26{
27	int policy, invalid_priority, old_priority;
28	struct sched_param param;
29
30	if (sched_getparam(0, &param) != 0) {
31		perror("An error occurs when calling sched_getparam()");
32		return PTS_UNRESOLVED;
33	}
34	old_priority = param.sched_priority;
35
36	policy = sched_getscheduler(0);
37	if (policy == -1) {
38		perror("An error occurs when calling sched_getscheduler()");
39		return PTS_UNRESOLVED;
40	} else if (policy != SCHED_SPORADIC) {
41		if (sched_setscheduler(0, SCHED_SPORADIC, &param) == -1) {
42			perror("An error occurs when calling sched_getparam()");
43			return PTS_UNRESOLVED;
44		}
45	}
46
47	invalid_priority = sched_get_priority_max(SCHED_SPORADIC);
48	if (invalid_priority == -1) {
49		perror("An error occurs when calling sched_get_priority_max()");
50		return PTS_UNRESOLVED;
51	}
52
53	/* set an invalid priority */
54	invalid_priority++;
55	param.sched_ss_low_priority = invalid_priority;
56	param.sched_priority++;
57	sched_setparam(0, &param);
58
59	if (sched_getparam(0, &param) != 0) {
60		perror("An error occurs when calling sched_getparam()");
61		return PTS_UNRESOLVED;
62	}
63
64	if (param.sched_priority == old_priority) {
65		printf("Test PASSED\n");
66		return PTS_PASS;
67	} else {
68		printf("The priority have changed.\n");
69		return PTS_FAIL;
70	}
71}
72
73#else
74int main(void)
75{
76	printf("Does not support SS (SPORADIC SERVER)\n");
77	return PTS_UNSUPPORTED;
78}
79
80#endif
81