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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [posix/] [src/] [mqueueclose.c] - Rev 773
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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: mqueueclose.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> /* * * 15.2.2 Close a Message Queue, P1003.1b-1993, p. 275 */ int mq_close( mqd_t mqdes ) { register POSIX_Message_queue_Control *the_mq; Objects_Locations location; the_mq = _POSIX_Message_queue_Get( mqdes, &location ); switch ( location ) { case OBJECTS_ERROR: set_errno_and_return_minus_one( EBADF ); case OBJECTS_REMOTE: _Thread_Dispatch(); return POSIX_MP_NOT_IMPLEMENTED(); set_errno_and_return_minus_one( EINVAL ); case OBJECTS_LOCAL: the_mq->open_count -= 1; _POSIX_Message_queue_Delete( the_mq ); _Thread_Enable_dispatch(); return 0; } return POSIX_BOTTOM_REACHED(); }
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