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glibc  2.9
oldiofgetpos64.c
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00001 /* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004
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    As a special exception, if you link the code in this file with
00021    files compiled with a GNU compiler to produce an executable,
00022    that does not cause the resulting executable to be covered by
00023    the GNU Lesser General Public License.  This exception does not
00024    however invalidate any other reasons why the executable file
00025    might be covered by the GNU Lesser General Public License.
00026    This exception applies to code released by its copyright holders
00027    in files containing the exception.  */
00028 
00029 #include "libioP.h"
00030 #include <errno.h>
00031 
00032 #include <shlib-compat.h>
00033 #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)
00034 
00035 int
00036 attribute_compat_text_section
00037 _IO_old_fgetpos64 (fp, posp)
00038      _IO_FILE *fp;
00039      _IO_fpos64_t *posp;
00040 {
00041 #ifdef _G_LSEEK64
00042   _IO_off64_t pos;
00043   CHECK_FILE (fp, EOF);
00044   _IO_acquire_lock (fp);
00045   pos = _IO_seekoff_unlocked (fp, 0, _IO_seek_cur, 0);
00046   if (_IO_in_backup (fp) && pos != _IO_pos_BAD)
00047     pos -= fp->_IO_save_end - fp->_IO_save_base;
00048   _IO_release_lock (fp);
00049   if (pos == _IO_pos_BAD)
00050     {
00051       /* ANSI explicitly requires setting errno to a positive value on
00052         failure.  */
00053 #ifdef EIO
00054       if (errno == 0)
00055        __set_errno (EIO);
00056 #endif
00057       return EOF;
00058     }
00059   posp->__pos = pos;
00060   return 0;
00061 #else
00062   __set_errno (ENOSYS);
00063   return EOF;
00064 #endif
00065 }
00066 
00067 #ifdef weak_alias
00068 compat_symbol (libc, _IO_old_fgetpos64, _IO_fgetpos64, GLIBC_2_1);
00069 strong_alias (_IO_old_fgetpos64, __old_fgetpos64)
00070 compat_symbol (libc, __old_fgetpos64, fgetpos64, GLIBC_2_1);
00071 #endif
00072 
00073 #endif