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glibc  2.9
mq_unlink.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 <sysdep.h>
00022 
00023 #ifdef __NR_mq_unlink
00024 
00025 /* Remove message queue named NAME.  */
00026 int
00027 mq_unlink (const char *name)
00028 {
00029   if (name[0] != '/')
00030     {
00031       __set_errno (EINVAL);
00032       return -1;
00033     }
00034 
00035   INTERNAL_SYSCALL_DECL (err);
00036   int ret = INTERNAL_SYSCALL (mq_unlink, err, 1, name + 1);
00037 
00038   /* While unlink can return either EPERM or EACCES, mq_unlink should
00039      return just EACCES.  */
00040   if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (ret, err), 0))
00041     {
00042       ret = INTERNAL_SYSCALL_ERRNO (ret, err);
00043       if (ret == EPERM)
00044        ret = EACCES;
00045       __set_errno (ret);
00046       ret = -1;
00047     }
00048 
00049   return ret;
00050 }
00051 
00052 #else
00053 # include <rt/mq_unlink.c>
00054 #endif