1 | /* |
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2 | * NOTE: The structure of the routines is identical to that of POSIX |
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3 | * Message_queues to leave the option of having unnamed message |
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4 | * queues at a future date. They are currently not part of the |
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5 | * POSIX standard but unnamed message_queues are. This is also |
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6 | * the reason for the apparently unnecessary tracking of |
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7 | * the process_shared attribute. [In addition to the fact that |
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8 | * it would be trivial to add pshared to the mq_attr structure |
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9 | * and have process private message queues.] |
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10 | * |
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11 | * This code ignores the O_RDONLY/O_WRONLY/O_RDWR flag at open |
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12 | * time. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <stdarg.h> |
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22 | |
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23 | #include <pthread.h> |
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24 | #include <limits.h> |
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25 | #include <errno.h> |
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26 | #include <fcntl.h> |
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27 | #include <mqueue.h> |
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28 | |
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29 | #include <rtems/system.h> |
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30 | #include <rtems/score/watchdog.h> |
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31 | #include <rtems/seterr.h> |
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32 | #include <rtems/posix/mqueue.h> |
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33 | #include <rtems/posix/time.h> |
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34 | |
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35 | /*PAGE |
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36 | * |
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37 | * 15.2.2 Remove a Message Queue, P1003.1b-1993, p. 276 |
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38 | */ |
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39 | |
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40 | int mq_unlink( |
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41 | const char *name |
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42 | ) |
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43 | { |
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44 | int status; |
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45 | register POSIX_Message_queue_Control *the_mq; |
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46 | Objects_Id the_mq_id; |
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47 | |
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48 | _Thread_Disable_dispatch(); |
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49 | |
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50 | status = _POSIX_Message_queue_Name_to_id( name, &the_mq_id ); |
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51 | if ( status != 0 ) { |
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52 | _Thread_Enable_dispatch(); |
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53 | rtems_set_errno_and_return_minus_one( status ); |
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54 | } |
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55 | |
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56 | /* |
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57 | * Don't support unlinking a remote message queue. |
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58 | */ |
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59 | |
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60 | if ( !_Objects_Is_local_id(the_mq_id) ) { |
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61 | _Thread_Enable_dispatch(); |
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62 | rtems_set_errno_and_return_minus_one( ENOSYS ); |
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63 | } |
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64 | |
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65 | the_mq = (POSIX_Message_queue_Control *) _Objects_Get_local_object( |
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66 | &_POSIX_Message_queue_Information, |
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67 | _Objects_Get_index( the_mq_id ) |
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68 | ); |
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69 | |
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70 | #if 0 && defined(RTEMS_MULTIPROCESSING) |
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71 | if ( the_mq->process_shared == PTHREAD_PROCESS_SHARED ) { |
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72 | _Objects_MP_Close( &_POSIX_Message_queue_Information, the_mq_id ); |
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73 | } |
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74 | #endif |
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75 | |
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76 | |
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77 | the_mq->linked = FALSE; |
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78 | _POSIX_Message_queue_Namespace_remove( the_mq ); |
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79 | _POSIX_Message_queue_Delete( the_mq ); |
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80 | |
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81 | _Thread_Enable_dispatch(); |
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82 | return 0; |
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83 | } |
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84 | |
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