Re: kernel32: Also report empty drives as available in GetLogicalDrives

[Alexandre Julliard]

Alexandre Goujon  writes:
> dlls/kernel32/volume.c |   13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
>
> diff --git a/dlls/kernel32/volume.c b/dlls/kernel32/volume.c
> index 8377e41..67e2eb1 100644
> --- a/dlls/kernel32/volume.c
> +++ b/dlls/kernel32/volume.c
> @@ -1441,19 +1441,26 @@ DWORD WINAPI GetLogicalDrives(void)
>      DWORD ret = 0;
>      int i;
> - if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a:") )))
> - if (!(buffer = HeapAlloc( GetProcessHeap(), 0, strlen(config_dir) + sizeof("/dosdevices/a::") )))
> {
>     SetLastError( ERROR_NOT_ENOUGH_MEMORY );
>     return 0;
> }
> strcpy( buffer, config_dir );
> - strcat( buffer, "/dosdevices/a:" );
> - dev = buffer + strlen(buffer) - 2;
> -
>
> strcat( buffer, "/dosdevices/a::" );
> -
>
> dev = buffer + strlen(buffer) - 3;
>
> for (i = 0; i < 26; i++)
> {
>     *dev = 'a' + i;
> -
>    dev[2] = 0;
>    if (!stat( buffer, &st )) ret |= (1 << i);
> -
>    /* Windows also report empty drives as available */
> -
>    else
> -
>    {
> -
>        dev[2] = ':';
> -
>        if (!stat( buffer, &st )) ret |= (1 << i);
> -
>    }

You can't do that, the device symlinks don't reflect the availability of
the drive. It would have to go through the mountmgr.