[Help] How to Replace File Operations in File System?
freeman
freeman.zhang1992 at gmail.com
Thu Feb 13 08:28:16 EST 2014
Hi Rishi,
Thanks for your reply!
I'm sorry that the description of the problem was not clear.
I am writing a module(not a filesystem) to replace some operation
pointers of Ext4.
Just now, I try to print the dentry->name as you said. It seems
that I'm modifying the right files.
I'm wonderring if my idea is bad:
I changed operations of a file both in ->create and ->lookup in
inode operations of direcotry. And test the module like this:
echo hello > hello (for dir_inode->create and f->write)
cat hello (for f->read)
Will the file operations be changed back?
Or what I modified is some copies of real objects because of the
complex caching mechanism?
Regards
Freeman Zhang
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