Re: [fuse-devel] Using low level operations

[Fareha S. <fa...@ee...>]

Hi,

I didn't get a response to my previous two emails :(
I have another question. I noticed that any file operation is preceded 
by a lookup of the given path and if the lookup fails, the final 
operation is never invoked and hence never reaches the user-level code. 
For example, say a mkdir was issued on /a/b/c and directory b does not 
exist. The lookup will fail and the mkdir will never be called. Is there 
any way to get to the userlevel code for mkdir despite this error? I'm 
trying to make a copy-on-write filesystem. So if the file does not exist 
on the fuse mounted file system, but does exist in the main system (on 
which it was mounted) I want to access that file and copy over to the 
fuse file system. Please any suggestions would help me very much.

I hope I get a response this time.
Thanks.
Fareha

Fareha Shafique wrote:

>Hi,
>In writing a filesystem that uses the fuse lowlevel operation for 
>lookup, is it necessary for all the operations to use the low-level API 
>now or can only the lookup and getattr be written using the low-level 
>API and all other operations using the high-level API?
>
>A quick reponse would be appreciated.
>
>Thanks.
>Fareha
>
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