Re: kernel access to device comm is kdevtmpfs

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On Wed, Aug 26, 2015 at 09:47:31AM -0400, Stephen Smalley wrote:

<snip>

> 
> Fedora has tried to work around this by defining name-based type
> transitions for the kernel domain on /dev to label the device nodes
> correctly on creation.  However, name-based type transitions aren't well
> suited to that purpose; they only support exact match (no prefix, glob,
> or regex matching), they only match the last component, and they were
> only intended to cover exceptional cases where regular type transitions
> weren't sufficiently granular and one couldn't modify the creating
> program to explicitly label the file based on file_contexts (so they
> aren't designed to scale well).  Maybe we could use genfs_contexts
> instead (i.e. add devtmpfs to the list of filesystems that have
> SE_SBGENFS set in sbsec->flags, then you can specify path prefixes
> relative to the root of devtmpfs and label them that way).

This sounds like a good idea to me.

- -- 
02DFF788
4D30 903A 1CF3 B756 FB48  1514 3148 83A2 02DF F788
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Dominick Grift
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