Re: IRP Create

The I/O Manager knows from the very beginning what it is up to when it
issues the appropriate commands for a specific file operation.

What makes you believe so????

IO Manager issues requests to FS driver in response to native API calls
that are made by the client code, so that IRP_MJ_CREATE is the result
of ZwCreateFile() call, and IRP SET_INFORMATION is result of
ZwSetInformationFile()call. How is IO Manager supposed to know which
particular function the client code is about to call next while it
processes ZwCreateFile() call???


Now my question: Is there a way to find the kind of operation that is going
to be performed (eg read, write, rename) when an IRP Create operation is
issued?

Hopefully, by now you already understand that the question in itself is
just illogical

Anton Bassov

Beat Muller wrote:
About a month ago I asked how to correctly terminate an IRP Create
operation. Thank you very much for your replies, Don Burn and Maxim
Shatskih! So far they didn't help me a great deal, BUT please read on!

Your remark, Don Burn, that files can be renamed made me pondering a lot and
for quite a while in our app I didn't come across a situation where that
could happen until I found that download managers indeed do rename files
when downloading is finished. Renaming starts with an IRP Create operation
but so far I have to wait for an IRP SET_INFORMATION operation in order to
find out whether a rename op is taking place or not. My app works perfectly
that way but I'm not so happy with my code.

The I/O Manager knows from the very beginning what it is up to when it
issues the appropriate commands for a specific file operation.

Now my question: Is there a way to find the kind of operation that is going
to be performed (eg read, write, rename) when an IRP Create operation is
issued?

I didn't find a hint in Walter Oney's Driver book.

Any suggestions would be highly appreciated.

Michael Keller

.

Relevant Pages

  • Re: IRP Create
    ... a bunch of writes, then doing a rename operation, then do other operations. ... IO Manager issues requests to FS driver in response to native API calls ... that are made by the client code, so that IRP_MJ_CREATE is the result ... to be performed when an IRP Create operation is ...
    (microsoft.public.development.device.drivers)
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    (microsoft.public.development.device.drivers)
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    ... The project manager now supports moving a file outside of its parent directory in order to change the build order. ... Previously, you could change the build order only by moving files around within a directory, or by moving directories within the project. ... Rename Refactoring had known problems when trying to rename components that were managed by the VCL designer. ...
    (borland.public.delphi.non-technical)
  • Re: how to determine if given IRP is completed?
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