Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: security module question | From | Eric Paris <> | Date | Thu, 06 Aug 2009 14:38:08 -0400 |
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On Wed, 2009-08-05 at 12:02 +1000, James Morris wrote: > On Tue, 4 Aug 2009, Justin Banks wrote: > > > Hello - I'm trying to implement a security module that will allow or > > disallow writes on files by byte ranges. Is there a way to use > > inode_permission() to do this, or is there an alternative route I should > > take? It doesn't look like inode_permission() will give me the data I > > need (offset + length of write).
There is nothing that can do that. Neither fanotify nor the LSM. Biggest problem is mmap.....
I think there was past kernel module which did this, but I don't remember what they were called. Nothing which tracks this and could be used was ever reasonable for the mainline kernel.
-Eric
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