4.104.114.95
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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 | * _POSIX_Message_queue_Name_to_id |
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38 | * |
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39 | * Look up the specified name and attempt to locate the id |
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40 | * for the associated message queue. |
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41 | */ |
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42 | |
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43 | int _POSIX_Message_queue_Name_to_id( |
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44 | const char *name, |
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45 | Objects_Id *id |
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46 | ) |
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47 | { |
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48 | Objects_Name_or_id_lookup_errors status; |
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49 | |
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50 | if ( !name ) |
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51 | return EINVAL; |
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52 | |
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53 | if ( !name[0] ) |
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54 | return EINVAL; |
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55 | |
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56 | if( strlen(name) > PATH_MAX ) |
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57 | return ENAMETOOLONG; |
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58 | |
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59 | status = _Objects_Name_to_id( |
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60 | &_POSIX_Message_queue_Information, (char *)name, 0, id ); |
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61 | |
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62 | if ( status == OBJECTS_NAME_OR_ID_LOOKUP_SUCCESSFUL ) |
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63 | return 0; |
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64 | |
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65 | return ENOENT; |
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66 | } |
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