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glibc  2.9
flock.c
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00001 /* Copyright (C) 1992, 1994, 1995, 1997 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 <sys/file.h>
00021 #include <hurd/fd.h>
00022 #include <hurd/fs.h>
00023 
00024 /* Apply or remove an advisory lock, according to OPERATION,
00025    on the file FD refers to.  */
00026 int
00027 __flock (fd, operation)
00028      int fd;
00029      int operation;
00030 {
00031   error_t err;
00032 
00033   if (err = HURD_DPORT_USE (fd, __file_lock (port, operation)))
00034     return __hurd_dfail (fd, err);
00035 
00036   return 0;
00037 }
00038 
00039 weak_alias (__flock, flock)