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 the
12 * sched_ss_repl_period is not greater than or equal to the
13 * sched_ss_init_budget member.
14 *
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#if defined(_POSIX_SPORADIC_SERVER)&&(_POSIX_SPORADIC_SERVER != -1)
29
30int main(){
31	int policy, result;
32	int old_priority, old_policy, new_policy;
33	struct sched_param param;
34
35	if(sched_getparam(getpid(), &param) != 0) {
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	/* set a sched_ss_repl_period lower than the sched_ss_init_budget */
48	param.sched_ss_repl_period.tv_sec = 1;
49	param.sched_ss_repl_period.tv_nsec = 0;
50
51	param.sched_ss_init_budget.tv_sec = 2;
52	param.sched_ss_init_budget.tv_nsec = 0;
53
54	param.sched_priority = sched_get_priority_max(SCHED_SPORADIC);
55
56	result = sched_setscheduler(0, SCHED_SPORADIC, &param);
57
58	if(sched_getparam(getpid(), &param) != 0) {
59		perror("An error occurs when calling sched_getparam()");
60		return PTS_UNRESOLVED;
61	}
62
63	new_policy = sched_getscheduler(getpid());
64	if(new_policy == -1) {
65		perror("An error occurs when calling sched_getscheduler()");
66		return PTS_UNRESOLVED;
67	}
68
69
70	if(old_policy == new_policy &&
71	   old_priority == param.sched_priority) {
72		printf("Test PASSED\n");
73		return PTS_PASS;
74	}
75
76	if(param.sched_priority != old_priority) {
77		printf("The param has changed\n");
78	}
79	if(new_policy != old_policy) {
80		printf("The policy has changed\n");
81	}
82	return PTS_FAIL;
83
84
85}
86#else
87int main()
88{
89	printf("Does not support SS (SPORADIC SERVER)\n");
90	return PTS_UNSUPPORTED;
91}
92#endif
93