RFC: ntdll: Implement CDROM_GetInterfaceInfo() on Mac OS (try 2)

[Alexandre Julliard]

Charles Davis <cdavis at mymail.mines.edu> writes:

> Now I just need to figure out how to do that. I read the headers and
> source, and figured out a QUERY_UNIX_DRIVE won't work because it needs a
> drive letter, and NTDLL isn't supposed to know about drive letters.
> Maybe we can use the device name by doing something similar to
> get_parent_device(). But that only works on Mac OS. If we do this for
> Linux, too, we'll have to figure something else out. Maybe if we fstat()
> the FD and get its device number, we can use it to find the file system
> corresponding to it. Something like that could work on Mac OS, too, and
> there's similar code elsewhere in Wine (in ntdll itself, if I'm not
> mistaken). Maybe I could even hijack that code for this purpose instead
> of reinventing the wheel.

The way it needs to work is basically that opening the device would open
an NT-style device instead of directly the Unix device. Then you have a
handle that you can use with mountmgr, and mountmgr can give you an
appropriate unix fd for calls that are performed on the client side.

-- 
Alexandre Julliard
julliard at winehq.org