libio/oldiofopen.c

   1 /* Copyright (C) 1993-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.
  17
  18    As a special exception, if you link the code in this file with
  19    files compiled with a GNU compiler to produce an executable,
  20    that does not cause the resulting executable to be covered by
  21    the GNU Lesser General Public License.  This exception does not
  22    however invalidate any other reasons why the executable file
  23    might be covered by the GNU Lesser General Public License.
  24    This exception applies to code released by its copyright holders
  25    in files containing the exception.  */
  26
  27 #include <shlib-compat.h>
  28 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
  29
  30 #define _IO_USE_OLD_IO_FILE
  31 #include "libioP.h"
  32 #include <stdlib.h>
  33
  34
  35 _IO_FILE *
  36 attribute_compat_text_section
  37 _IO_old_fopen (filename, mode)
  38      const char *filename;
  39      const char *mode;
  40 {
  41   struct locked_FILE
  42   {
  43     struct _IO_FILE_complete_plus fp;
  44 #ifdef _IO_MTSAFE_IO
  45     _IO_lock_t lock;
  46 #endif
  47   } *new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
  48
  49   if (new_f == NULL)
  50     return NULL;
  51 #ifdef _IO_MTSAFE_IO
  52   new_f->fp.file._file._lock = &new_f->lock;
  53 #endif
  54   _IO_old_init (&new_f->fp.file._file, 0);
  55   _IO_JUMPS ((struct _IO_FILE_plus *) &new_f->fp) = &_IO_old_file_jumps;
  56   _IO_old_file_init ((struct _IO_FILE_plus *) &new_f->fp);
  57 #if  !_IO_UNIFIED_JUMPTABLES
  58   new_f->fp.vtable = NULL;
  59 #endif
  60   if (_IO_old_file_fopen ((_IO_FILE *) &new_f->fp, filename, mode) != NULL)
  61     return (_IO_FILE *) &new_f->fp;
  62   _IO_un_link ((struct _IO_FILE_plus *) &new_f->fp);
  63   free (new_f);
  64   return NULL;
  65 }
  66
  67 strong_alias (_IO_old_fopen, __old_fopen)
  68 compat_symbol (libc, _IO_old_fopen, _IO_fopen, GLIBC_2_0);
  69 compat_symbol (libc, __old_fopen, fopen, GLIBC_2_0);
  70 #endif