Maybe it helps:
http://stackoverflow.com/questions/8347553/how-do-i-open-a-directory-at-kernel-level-using-the-file-descriptor-for-that-dir

2015-03-06 12:08 GMT-03:00 noyb noybee <[email protected]>:

> I am building a LKM in which I need to check whether a file is inside
> a particular directory(directly or inside sub-directories). Is there a
> function for this? Do I need to use the lookup function in
> inode_operations for this or is there a better method?
>
> Regards,
> winged_elite
>
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-- 
Gabriel Duarte
Linux User #471185
Rio de Janeiro / RJ
http://genericdev.wordpress.com/
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