Merge post 2017-11-09 changes from 5.2-trunk.

[mingw/mingw-org-wsl.git] / mingwrt / mingwex / mingw-fseek.c

diff --git a/mingwrt/mingwex/mingw-fseek.c b/mingwrt/mingwex/mingw-fseek.c
deleted file mode 100644 (file)
index 27b08ee..0000000
--- a/mingwrt/mingwex/mingw-fseek.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * mingw-fseek.c
- *
- * Workaround for limitations on Win9x where extended file content
- * is not zeroed out if you seek past the end and then write.
- *
- * $Id$
- *
- * Written by Mumit Khan  <khan@xraylith.wisc.edu>
- * Copyright (C) 1999, 2002-2005, 2011, 2015, MinGW.org Project.
- *
- * Abstracted from MinGW local patch to binutils/bfd/libbfd.c
- *
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice, this permission notice, and the following
- * disclaimer shall be included in all copies or substantial portions of
- * the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OF OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- */
-#define WIN32_LEAN_AND_MEAN
-
-#include <windows.h>
-#include <stdio.h>
-#include <io.h>
-#include <stdlib.h>
-
-#define ZEROBLOCKSIZE 512
-static int __mingw_fseek_called;
-
-/* The fseek in Win9x runtime does not zero out the file if seeking past
- * the end; if you don't want random stuff from your disk included in your
- * output DLL/executable, use this version instead. On WinNT/Win2k, it
- * just calls runtime fseek().
- *
- * CHECK/FIXME: Does this work for both text and binary modes??
- */
-int
-__mingw_fseek (FILE *fp, long offset, int whence)
-{
-# undef fseek
-  __mingw_fseek_called = 1;
-  return fseek (fp, offset, whence);
-}
-
-int
-__mingw_fseeko64 (FILE *fp, __off64_t offset, int whence)
-{
-# undef fseeko64
-  __mingw_fseek_called = 1;
-  return fseeko64 (fp, offset, whence);
-}
-
-size_t
-__mingw_fwrite (const void *buffer, size_t size, size_t count, FILE *fp)
-{
-# undef fwrite
-  if ((_osver & 0x8000) &&  __mingw_fseek_called)
-  {
-    ULARGE_INTEGER actual_length;
-    LARGE_INTEGER current_position = {{0LL}};
-    __mingw_fseek_called = 0;
-    fflush (fp);
-    actual_length.u.LowPart = GetFileSize
-      ( (HANDLE) _get_osfhandle (fileno (fp)), &actual_length.u.HighPart
-      );
-    if (actual_length.u.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR )
-      return -1;
-    current_position.u.LowPart = SetFilePointer
-      ( (HANDLE) _get_osfhandle (fileno (fp)), current_position.u.LowPart,
-       &current_position.u.HighPart, FILE_CURRENT
-      );
-    if (current_position.u.LowPart == 0xFFFFFFFF && GetLastError() != NO_ERROR )
-      return -1;
-
-#   ifdef DEBUG
-      printf( "__mingw_fwrite: current %I64u, actual %I64u\n",
-         current_position.QuadPart, actual_length.QuadPart
-       );
-#   endif /* DEBUG */
-    if( current_position.QuadPart > actual_length.QuadPart )
-    {
-      static char __mingw_zeros[ZEROBLOCKSIZE];
-      long long numleft;
-
-      SetFilePointer( (HANDLE) _get_osfhandle (fileno (fp)), 0, 0, FILE_END );
-      numleft = current_position.QuadPart - actual_length.QuadPart;
-
-#     ifdef DEBUG
-       printf( "__mingw_fwrite: Seeking %I64d bytes past end\n", numleft );
-#     endif /* DEBUG */
-      while( numleft > 0LL )
-      {
-       DWORD nzeros = (numleft > ZEROBLOCKSIZE)
-         ? ZEROBLOCKSIZE
-         : numleft;
-       DWORD written;
-       if( ! WriteFile ((HANDLE) _get_osfhandle (fileno (fp)),
-             __mingw_zeros, nzeros, &written, NULL)
-         )
-         { /* Best we can hope for, or at least DJ says so.
-            */
-           SetFilePointer( (HANDLE) _get_osfhandle (fileno (fp)),
-               0, 0, FILE_BEGIN
-             );
-           return -1;
-         }
-       if( written < nzeros )
-       {
-         /* Likewise. */
-         SetFilePointer( (HANDLE) _get_osfhandle (fileno (fp)),
-             0, 0, FILE_BEGIN
-           );
-         return -1;
-       }
-       numleft -= written;
-      }
-      FlushFileBuffers ((HANDLE) _get_osfhandle (fileno (fp)));
-    }
-  }
-  return (fwrite)(buffer, size, count, fp);
-}
-
-/* $RCSfile$: end of file */