Re: [RFC] cleaner FD_TYPE_XXX implementation

[Mike McCormack]

Hi Martin,

looks good to me. The only complication i can see is if overlapped
operations are possible on consoles.

Mike

Original message from: Martin Wilck
> The FD_TYPE_XXX macros are used in the ReadFile() and WriteFile()
> routines to invoke special read/write procedures for file descriptors

of
> certain types. I feel that for future improvements of Wine IO, it
> might be important to distinguish between FD type (regular file,

serial
> port, pipe, ...) and FD attributes (can do overlapped IO, uses

timeout,
> ....).
>
> That is the rationale for the following small patch.
> Please comment.
>
> Martin

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[RFC] cleaner FD_TYPE_XXX implementation

[Martin Wilck]

On Fri, 4 Jan 2002, Mike McCormack wrote:
> looks good to me. The only complication i can see is if overlapped
> operations are possible on consoles.

Yes, but the OVERLAPPED flag must be set explicitly by the get_file_info()
method of the corresponding server object.
console_get_file_info() will simply leave this flag unset if overlapped
operations are impossible on consoles.

The idea is that get_file_info() has a more flexible way to communicate
the capabilities of a file descriptor; this doesn't imply all fields are
completely independent of each other.

Martin