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/*
* Check decoding of sched_getscheduler and sched_setscheduler syscalls.
*
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include "pidns.h"
#include <sched.h>
#include <stdio.h>
#include <unistd.h>
int
main(void)
{
PIDNS_TEST_INIT;
TAIL_ALLOC_OBJECT_CONST_PTR(struct sched_param, param);
const int pid = getpid();
const char *pid_str = pidns_pid2str(PT_TGID);
long rc = syscall(__NR_sched_getscheduler, pid);
const char *scheduler;
switch (rc) {
case SCHED_FIFO:
scheduler = "SCHED_FIFO";
break;
case SCHED_RR:
scheduler = "SCHED_RR";
break;
#ifdef SCHED_BATCH
case SCHED_BATCH:
scheduler = "SCHED_BATCH";
break;
#endif
#ifdef SCHED_IDLE
case SCHED_IDLE:
scheduler = "SCHED_IDLE";
break;
#endif
#ifdef SCHED_ISO
case SCHED_ISO:
scheduler = "SCHED_ISO";
break;
#endif
#ifdef SCHED_DEADLINE
case SCHED_DEADLINE:
scheduler = "SCHED_DEADLINE";
break;
#endif
default:
scheduler = "SCHED_OTHER";
}
pidns_print_leader();
printf("sched_getscheduler(%d%s) = %ld (%s)\n",
pid, pid_str, rc, scheduler);
rc = syscall(__NR_sched_getscheduler, -1);
pidns_print_leader();
printf("sched_getscheduler(-1) = %s\n", sprintrc(rc));
param->sched_priority = -1;
rc = syscall(__NR_sched_setscheduler, pid, SCHED_FIFO, NULL);
pidns_print_leader();
printf("sched_setscheduler(%d%s, SCHED_FIFO, NULL) = %s\n",
pid, pid_str, sprintrc(rc));
rc = syscall(__NR_sched_setscheduler, pid, SCHED_FIFO, param + 1);
pidns_print_leader();
printf("sched_setscheduler(%d%s, SCHED_FIFO, %p) = %s\n",
pid, pid_str, param + 1, sprintrc(rc));
rc = syscall(__NR_sched_setscheduler, pid, 0xfaceda7a, param);
pidns_print_leader();
printf("sched_setscheduler(%d%s, %#x /* SCHED_??? */, [%d]) = %s\n",
pid, pid_str, 0xfaceda7a,
param->sched_priority, sprintrc(rc));
rc = syscall(__NR_sched_setscheduler, -1, SCHED_FIFO, param);
pidns_print_leader();
printf("sched_setscheduler(-1, SCHED_FIFO, [%d]) = %s\n",
param->sched_priority, sprintrc(rc));
rc = syscall(__NR_sched_setscheduler, pid, SCHED_FIFO, param);
pidns_print_leader();
printf("sched_setscheduler(%d%s, SCHED_FIFO, [%d]) = %s\n",
pid, pid_str, param->sched_priority, sprintrc(rc));
pidns_print_leader();
puts("+++ exited with 0 +++");
return 0;
}
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