diff options
Diffstat (limited to 'c/src/exec/posix/src/mqueueclose.c')
-rw-r--r-- | c/src/exec/posix/src/mqueueclose.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/c/src/exec/posix/src/mqueueclose.c b/c/src/exec/posix/src/mqueueclose.c new file mode 100644 index 0000000000..da9dd482c7 --- /dev/null +++ b/c/src/exec/posix/src/mqueueclose.c @@ -0,0 +1,58 @@ +/* + * 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. + * + * $Id$ + */ + +#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( EINVAL ); + 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(); +} |