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glibc  2.9
open64.c
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00001 /* Copyright (C) 1991,1995-1997,1999,2000,2002,2007
00002    Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <errno.h>
00021 #include <fcntl.h>
00022 #include <stdarg.h>
00023 #include <stdio.h>
00024 #include <sysdep-cancel.h>
00025 
00026 /* Open FILE with access OFLAG.  If OFLAG includes O_CREAT,
00027    a third argument is the file protection.  */
00028 int
00029 __libc_open64 (const char *file, int oflag, ...)
00030 {
00031   int mode = 0;
00032 
00033   if (oflag & O_CREAT)
00034     {
00035       va_list arg;
00036       va_start (arg, oflag);
00037       mode = va_arg (arg, int);
00038       va_end (arg);
00039     }
00040 
00041   if (SINGLE_THREAD_P)
00042     return INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode);
00043 
00044   int oldtype = LIBC_CANCEL_ASYNC ();
00045 
00046   int result = INLINE_SYSCALL (open, 3, file, oflag | O_LARGEFILE, mode);
00047 
00048   LIBC_CANCEL_RESET (oldtype);
00049 
00050   return result;
00051 }
00052 weak_alias (__libc_open64, __open64)
00053 libc_hidden_weak (__open64)
00054 weak_alias (__libc_open64, open64)