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 policy and scheduling parameters remain unchanged when
12 * the sched_ss_max_repl is not within the inclusive range [1,SS_REPL_MAX]
13 *
14 * Test with a sched_ss_max_repl value of 0.
15 * Steps:
16 *   1. Get the old policy and priority.
17 *   2. Call sched_setscheduler with invalid args.
18 *   3. Check that the policy and priority have not changed.
19 *
20 * @pt:SS
21 */
22#include <sched.h>
23#include <stdio.h>
24#include <errno.h>
25#include <unistd.h>
26#include "posixtest.h"
27
28
29#if defined(_POSIX_SPORADIC_SERVER)&&(_POSIX_SPORADIC_SERVER != -1)
30
31int main(){
32	int max_priority, old_priority, old_policy, new_policy;
33	struct sched_param param;
34
35	if(sched_getparam(getpid(), &param) == -1) {
36		perror("An error occurs when calling sched_getparam()");
37		return PTS_UNRESOLVED;
38	}
39	old_priority = param.sched_priority;
40
41	old_policy = sched_getscheduler(getpid());
42	if(old_policy == -1) {
43		perror("An error occurs when calling sched_getscheduler()");
44		return PTS_UNRESOLVED;
45	}
46
47	/* Make sure that param.sched_priority != old_priority */
48	max_priority = sched_get_priority_max(SCHED_SPORADIC);
49	param.sched_priority = (old_priority == max_priority) ?
50		sched_get_priority_min(SCHED_SPORADIC) :
51		max_priority;
52
53	param.sched_ss_max_repl = 0;
54
55	sched_setscheduler(0, SCHED_SPORADIC, &param);
56
57	if(sched_getparam(getpid(), &param) != 0) {
58		perror("An error occurs when calling sched_getparam()");
59		return PTS_UNRESOLVED;
60	}
61
62	new_policy = sched_getscheduler(getpid());
63	if(new_policy == -1) {
64		perror("An error occurs when calling sched_getscheduler()");
65		return PTS_UNRESOLVED;
66	}
67
68	if(old_policy == new_policy &&
69	   old_priority == param.sched_priority) {
70		printf("Test PASSED\n");
71		return PTS_PASS;
72	}
73
74	if(param.sched_priority != old_priority) {
75		printf("The param has changed\n");
76		return PTS_FAIL;
77	}
78	if(new_policy != old_policy) {
79		printf("The policy has changed\n");
80		return PTS_FAIL;
81	}
82
83}
84#else
85int main()
86{
87	printf("Does not support SS (SPORADIC SERVER)\n");
88	return PTS_UNSUPPORTED;
89}
90#endif
91