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#include <sys/wait.h> /* for waitpid() */
#include <unistd.h>
#include <stdio.h>
#include "tests.h"
#include "litmus.h"
TESTCASE(set_rt_task_param_invalid_pointer, ALL,
"reject invalid rt_task pointers")
{
SYSCALL_FAILS( EINVAL, set_rt_task_param(gettid(), NULL));
SYSCALL_FAILS( EFAULT, set_rt_task_param(gettid(), (void*) 0x123 ));
}
TESTCASE(set_rt_task_param_invalid_params, ALL,
"reject invalid rt_task values")
{
struct rt_task params;
params.cpu = 0;
params.period = 100;
params.relative_deadline = params.period;
params.phase = 0;
params.priority = LITMUS_LOWEST_PRIORITY;
params.cls = RT_CLASS_HARD;
params.budget_policy = NO_ENFORCEMENT;
/* over utilize */
params.exec_cost = 110;
SYSCALL_FAILS( EINVAL, set_rt_task_param(gettid(), ¶ms) );
/* bad CPU */
params.exec_cost = 90;
params.cpu = -1;
SYSCALL_FAILS( EINVAL, set_rt_task_param(gettid(), ¶ms) );
/* infeasible density */
params.cpu = 0;
params.relative_deadline = 30;
SYSCALL_FAILS( EINVAL, set_rt_task_param(gettid(), ¶ms) );
/* bad task */
params.relative_deadline = params.period;
SYSCALL_FAILS( EINVAL, set_rt_task_param(-1, ¶ms) );
/* now try correct params */
SYSCALL( set_rt_task_param(gettid(), ¶ms) );
}
TESTCASE(reject_bad_priorities, P_FP,
"reject invalid priorities")
{
struct rt_task params;
params.cpu = 0;
params.exec_cost = 10;
params.period = 100;
params.relative_deadline = params.period;
params.phase = 0;
params.cls = RT_CLASS_HARD;
params.budget_policy = NO_ENFORCEMENT;
SYSCALL( be_migrate_to(params.cpu) );
/* too high */
params.priority = 0;
SYSCALL( set_rt_task_param(gettid(), ¶ms) );
SYSCALL_FAILS( EINVAL, task_mode(LITMUS_RT_TASK) );
/* too low */
params.priority = LITMUS_MAX_PRIORITY;
SYSCALL( set_rt_task_param(gettid(), ¶ms) );
SYSCALL_FAILS( EINVAL, task_mode(LITMUS_RT_TASK) );
}
TESTCASE(accept_valid_priorities, P_FP,
"accept lowest and highest valid priorities")
{
struct rt_task params;
params.cpu = 0;
params.exec_cost = 10;
params.period = 100;
params.relative_deadline = params.period;
params.phase = 0;
params.cls = RT_CLASS_HARD;
params.budget_policy = NO_ENFORCEMENT;
SYSCALL( be_migrate_to(params.cpu) );
/* acceptable */
params.priority = LITMUS_LOWEST_PRIORITY;
SYSCALL( set_rt_task_param(gettid(), ¶ms) );
SYSCALL( task_mode(LITMUS_RT_TASK) );
SYSCALL( task_mode(BACKGROUND_TASK) );
params.priority = LITMUS_HIGHEST_PRIORITY;
SYSCALL( set_rt_task_param(gettid(), ¶ms) );
SYSCALL( task_mode(LITMUS_RT_TASK) );
SYSCALL( task_mode(BACKGROUND_TASK) );
}
TESTCASE(job_control_non_rt, ALL,
"reject job control for non-rt tasks")
{
unsigned int job_no;
SYSCALL_FAILS( EINVAL, sleep_next_period() );
SYSCALL_FAILS( EINVAL, wait_for_job_release(0) );
SYSCALL_FAILS( EPERM, get_job_no(&job_no) );
}
TESTCASE(rt_fork_non_rt, LITMUS,
"children of RT tasks are not automatically RT tasks")
{
unsigned int pid, job_no;
int status;
SYSCALL( sporadic_partitioned(10, 100, 0) );
SYSCALL( task_mode(LITMUS_RT_TASK) );
pid = fork();
ASSERT( pid != -1 );
if (pid == 0) {
/* child */
SYSCALL_FAILS( EINVAL, sleep_next_period() );
SYSCALL_FAILS( EINVAL, wait_for_job_release(0) );
SYSCALL_FAILS( EPERM, get_job_no(&job_no) );
exit(0);
} else {
/* parent */
SYSCALL( sleep_next_period() );
SYSCALL( wait_for_job_release(20) );
SYSCALL( get_job_no(&job_no) );
SYSCALL( task_mode(BACKGROUND_TASK) );
SYSCALL( waitpid(pid, &status, 0) );
ASSERT(WEXITSTATUS(status) == 0);
}
}
TESTCASE(ctrl_page_writable, ALL,
"tasks have write access to /dev/litmus/ctrl mappings")
{
volatile int *ctrl_page = (volatile int*) get_ctrl_page();
/* init_litmus() should have mapped the page already */
ASSERT(ctrl_page != NULL);
/* These should work without page faults. */
enter_np();
exit_np();
/* Try poking the memory directly. */
ctrl_page[32] = 0x12345678;
}
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