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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [mqueueunlink.c] - Rev 593
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/* * NOTE: The structure of the routines is identical to that of POSIX * Message_queues to leave the option of having unnamed message * queues at a future date. They are currently not part of the * POSIX standard but unnamed message_queues are. This is also * the reason for the apparently unnecessary tracking of * the process_shared attribute. [In addition to the fact that * it would be trivial to add pshared to the mq_attr structure * and have process private message queues.] * * This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open * time. * * $Id: mqueueunlink.c,v 1.2 2001-09-27 11:59:17 chris Exp $ */ #include <stdarg.h> #include <pthread.h> #include <limits.h> #include <errno.h> #include <fcntl.h> #include <mqueue.h> #include <rtems/system.h> #include <rtems/score/watchdog.h> #include <rtems/posix/seterr.h> #include <rtems/posix/mqueue.h> #include <rtems/posix/time.h> /*PAGE * * 15.2.2 Remove a Message Queue, P1003.1b-1993, p. 276 */ int mq_unlink( const char *name ) { int status; register POSIX_Message_queue_Control *the_mq; Objects_Id the_mq_id; _Thread_Disable_dispatch(); status = _POSIX_Message_queue_Name_to_id( name, &the_mq_id ); if ( status != 0 ) { _Thread_Enable_dispatch(); set_errno_and_return_minus_one( status ); } /* * Don't support unlinking a remote message queue. */ if ( !_Objects_Is_local_id(the_mq_id) ) { _Thread_Enable_dispatch(); set_errno_and_return_minus_one( ENOSYS ); } the_mq = (POSIX_Message_queue_Control *) _Objects_Get_local_object( &_POSIX_Message_queue_Information, _Objects_Get_index( the_mq_id ) ); #if 0 && defined(RTEMS_MULTIPROCESSING) if ( the_mq->process_shared == PTHREAD_PROCESS_SHARED ) { _Objects_MP_Close( &_POSIX_Message_queue_Information, the_mq_id ); } #endif the_mq->linked = FALSE; _POSIX_Message_queue_Namespace_remove( the_mq ); _POSIX_Message_queue_Delete( the_mq ); _Thread_Enable_dispatch(); return 0; }
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