https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #1 from Vital <vital.fadeev@gmail.com> ---
I look into the std.file... function "existsImpl()"...

...
    version (Windows)
    {
        // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/
        // fileio/base/getfileattributes.asp
        return GetFileAttributesW(namez) != 0xFFFFFFFF; //
INVALID_FILE_ATTRIBUTES
    }
...

existsImpl() functions return "false" on file "c:\\hiberfil.sys".
Because INVALID_FILE_ATTRIBUTES.
It not correct? because file exists.

I tried several ways: GetFileAttributesW(), GetFileAttributesExW(),
FindFirstFileW().


Working solution :

    WIN32_FIND_DATAW fd;
    auto hFind = FindFirstFile ( "c:\\hiberfil.sys", &fd );

    if ( hFind != INVALID_HANDLE_VALUE )
    {
        writeln( "[ OK ]" );
        FindClose( hFind );
    }

Of course solution above is a little slower than GetFileAttributes(), but work correct with .sys files.

I will suggest using "FindFirstFileW()" in the "std.file: existsImpl()"  there
is no better solution yet.

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https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #2 from Vital <vital.fadeev@gmail.com> ---
Created attachment 1806
  --> https://issues.dlang.org/attachment.cgi?id=1806&action=edit
std-file-dirEnrty-windows.patch

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https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #3 from Vital <vital.fadeev@gmail.com> ---
I fix bug. Check the patch. I will be happy when it will be committed in next version.

std-file-dirEnrty-windows.patch

( see attached .patch in ticket )

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https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #4 from Vital <vital.fadeev@gmail.com> ---
FindFirstFileW() can read attributes of system locked files.
I used it.

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https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #5 from Vital <vital.fadeev@gmail.com> ---
Created attachment 1807
  --> https://issues.dlang.org/attachment.cgi?id=1807&action=edit
fixed std.file.exists()

Using FindFirstFile() for check file existens under Windows.
Because correct work with system locked files: like a c:\hiberfil.sys

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https://issues.dlang.org/show_bug.cgi?id=21289

--- Comment #6 from Vital <vital.fadeev@gmail.com> ---
Created attachment 1808
  --> https://issues.dlang.org/attachment.cgi?id=1808&action=edit
fix std.file.exists and std.file.DirEntry Windows version for system locked
files and Windows root paths

Latest version patch. Includes all previous patches.

fix:
- std.file.exists
- std.file.DirEntry Windows version for system locked files
- Windows root paths attributes

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https://issues.dlang.org/show_bug.cgi?id=21289

Vital <vital.fadeev@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|dlang.org                   |phobos

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