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glibc  2.9
mq_notify.c
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00001 /* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <errno.h>
00020 #include <mqueue.h>
00021 #include <stddef.h>
00022 #include <sysdep.h>
00023 
00024 #ifdef __NR_mq_notify
00025 
00026 /* Register notification upon message arrival to an empty message queue
00027    MQDES.  */
00028 int
00029 mq_notify (mqd_t mqdes, const struct sigevent *notification)
00030 {
00031   /* mq_notify which handles SIGEV_THREAD is included in the thread
00032      add-on.  */
00033   if (notification != NULL
00034       && notification->sigev_notify == SIGEV_THREAD)
00035     {
00036       __set_errno (ENOSYS);
00037       return -1;
00038     }
00039   return INLINE_SYSCALL (mq_notify, 2, mqdes, notification);
00040 }
00041 
00042 #else
00043 # include <rt/mq_notify.c>
00044 #endif