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glibc  2.9
open64.c
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00001 /* Copyright (C) 1991,1995-1997,1999,2000,2002 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 <fcntl.h>
00020 #include <stdarg.h>
00021 #include <bp-sym.h>
00022 #include <sysdep-cancel.h>
00023 
00024 /* Open FILE with access OFLAG.  If OFLAG includes O_CREAT,
00025    a third argument is the file protection.  */
00026 int
00027 __libc_open64 (const char *file, int oflag, ...)
00028 {
00029   int mode = 0;
00030 
00031   if (oflag & O_CREAT)
00032     {
00033       va_list arg;
00034       va_start (arg, oflag);
00035       mode = va_arg (arg, int);
00036       va_end (arg);
00037     }
00038 
00039   if (SINGLE_THREAD_P)
00040     return __libc_open (file, oflag | O_LARGEFILE, mode);
00041 
00042   int oldtype = LIBC_CANCEL_ASYNC ();
00043 
00044   int result = __libc_open (file, oflag | O_LARGEFILE, mode);
00045 
00046   LIBC_CANCEL_RESET (oldtype);
00047 
00048   return result;
00049 }
00050 weak_alias (__libc_open64, BP_SYM (__open64))
00051 libc_hidden_weak (BP_SYM (__open64))
00052 weak_alias (__libc_open64, BP_SYM (open64))