int sem_unlink(
const char *name
)
{
int status;
register POSIX_Semaphore_Control *the_semaphore;
Objects_Id the_semaphore_id;
size_t name_len;
_Thread_Disable_dispatch();
status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id, &name_len );
if ( status != 0 ) {
_Thread_Enable_dispatch();
rtems_set_errno_and_return_minus_one( status );
}
the_semaphore = (POSIX_Semaphore_Control *) _Objects_Get_local_object(
&_POSIX_Semaphore_Information,
_Objects_Get_index( the_semaphore_id )
);
the_semaphore->linked = false;
_POSIX_Semaphore_Namespace_remove( the_semaphore );
_POSIX_Semaphore_Delete( the_semaphore );
_Thread_Enable_dispatch();
return 0;
}
int sem_unlink(
const char *name
)
{
int status;
register POSIX_Semaphore_Control *the_semaphore;
sem_t the_semaphore_id;
_Thread_Disable_dispatch();
status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id );
if ( status != 0 ) {
_Thread_Enable_dispatch();
rtems_set_errno_and_return_minus_one( status );
}
/*
* Don't support unlinking a remote semaphore.
*/
#if defined(RTEMS_MULTIPROCESSING)
if ( !_Objects_Is_local_id((Objects_Id)the_semaphore_id) ) {
_Thread_Enable_dispatch();
rtems_set_errno_and_return_minus_one( ENOSYS );
}
#endif
the_semaphore = (POSIX_Semaphore_Control *) _Objects_Get_local_object(
&_POSIX_Semaphore_Information,
_Objects_Get_index( the_semaphore_id )
);
#if defined(RTEMS_MULTIPROCESSING)
if ( the_semaphore->process_shared == PTHREAD_PROCESS_SHARED ) {
_Objects_MP_Close( &_POSIX_Semaphore_Information, the_semaphore_id );
}
#endif
the_semaphore->linked = FALSE;
_POSIX_Semaphore_Namespace_remove( the_semaphore );
_POSIX_Semaphore_Delete( the_semaphore );
_Thread_Enable_dispatch();
return 0;
}
int status;
Objects_Id the_semaphore_id;
POSIX_Semaphore_Control *the_semaphore;
Objects_Locations location;
size_t name_len;
_Thread_Disable_dispatch();
if ( oflag & O_CREAT ) {
va_start(arg, oflag);
mode = va_arg( arg, mode_t );
value = va_arg( arg, unsigned int );
va_end(arg);
}
status = _POSIX_Semaphore_Name_to_id( name, &the_semaphore_id, &name_len );
/*
* If the name to id translation worked, then the semaphore exists
* and we can just return a pointer to the id. Otherwise we may
* need to check to see if this is a "semaphore does not exist"
* or some other miscellaneous error on the name.
*/
if ( status ) {
/*
* Unless provided a valid name that did not already exist
* and we are willing to create then it is an error.
*/
