[PATCH v3] winmm: Use _lopen instead of OpenFile.

[Andrew Eikum]

On Wed, Apr 01, 2020 at 06:41:27PM +1100, Alistair Leslie-Hughes wrote:
> OpenFile has a filpath limit of 128.
> Use _lopen which calls through to CreateFile which doesn't have this limit.
> 
> Alt patch without any copied code.
> 
> Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=48832
> Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=27324
> 
> Signed-off-by: Alistair Leslie-Hughes <leslie_alistair at hotmail.com>
> ---
>  dlls/winmm/mmio.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/dlls/winmm/mmio.c b/dlls/winmm/mmio.c
> index 6f14301975..4f9c5ad77a 100644
> --- a/dlls/winmm/mmio.c
> +++ b/dlls/winmm/mmio.c
> @@ -76,8 +76,10 @@ static LRESULT CALLBACK mmioDosIOProc(LPMMIOINFO lpmmioinfo, UINT uMessage,
>  
>  	    /* if filename NULL, assume open file handle in adwInfo[0] */
>  	    if (szFileName) {
> -                OFSTRUCT    ofs;
> -                lpmmioinfo->adwInfo[0] = OpenFile(szFileName, &ofs, lpmmioinfo->dwFlags & 0xFFFF);
> +                if (lpmmioinfo->dwFlags & OF_CREATE)
> +                    lpmmioinfo->adwInfo[0] = _lcreat(szFileName, 0);

The trouble with this approach is it's ignoring the SHARE bits, which
OpenFile would pass through to CreateFile. Is that intended?

Andrew