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#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include "tests.h"
#include "litmus.h"
TESTCASE(lock_pcp, P_FP,
"PCP acquisition and release")
{
int fd, od, cpu = 0;
SYSCALL( fd = open(".pcp_locks", O_RDONLY | O_CREAT) );
SYSCALL( sporadic_partitioned(10, 100, cpu) );
SYSCALL( task_mode(LITMUS_RT_TASK) );
SYSCALL( od = open_pcp_sem(fd, 0, cpu) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
/* tasks may not unlock resources they don't own */
SYSCALL_FAILS(EINVAL, litmus_unlock(od) );
SYSCALL( od_close(od) );
SYSCALL( close(fd) );
SYSCALL( remove(".pcp_locks") );
}
TESTCASE(lock_dpcp, P_FP,
"DPCP acquisition and release")
{
int fd, od, cpu = 1;
SYSCALL( fd = open(".pcp_locks", O_RDONLY | O_CREAT) );
SYSCALL( sporadic_partitioned(10, 100, 0) );
SYSCALL( task_mode(LITMUS_RT_TASK) );
SYSCALL( od = open_dpcp_sem(fd, 0, cpu) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
/* tasks may not unlock resources they don't own */
SYSCALL_FAILS(EINVAL, litmus_unlock(od) );
SYSCALL( od_close(od) );
SYSCALL( close(fd) );
SYSCALL( remove(".pcp_locks") );
}
TESTCASE(not_lock_pcp_be, P_FP,
"don't let best-effort tasks lock (D|M-)PCP semaphores")
{
int fd, od;
SYSCALL( fd = open(".pcp_locks", O_RDONLY | O_CREAT) );
/* BE tasks are not even allowed to open a PCP semaphore */
SYSCALL_FAILS(EPERM, od = open_pcp_sem(fd, 0, 1) );
/* BE tasks are not allowed to open a D-PCP semaphore */
SYSCALL_FAILS(EPERM, od = open_dpcp_sem(fd, 0, 1) );
/* BE tasks are not allowed to open an M-PCP semaphore */
SYSCALL_FAILS(EPERM, od = open_mpcp_sem(fd, 0) );
SYSCALL( close(fd) );
SYSCALL( remove(".pcp_locks") );
}
TESTCASE(lock_mpcp, P_FP,
"MPCP acquisition and release")
{
int fd, od;
SYSCALL( fd = open(".pcp_locks", O_RDONLY | O_CREAT) );
SYSCALL( sporadic_partitioned(10, 100, 0) );
SYSCALL( task_mode(LITMUS_RT_TASK) );
SYSCALL( od = open_mpcp_sem(fd, 0) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
SYSCALL( litmus_lock(od) );
SYSCALL( litmus_unlock(od) );
/* tasks may not unlock resources they don't own */
SYSCALL_FAILS(EINVAL, litmus_unlock(od) );
SYSCALL( od_close(od) );
SYSCALL( close(fd) );
SYSCALL( remove(".pcp_locks") );
}
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