[libvirt] [PATCH] storage: Sanitize pool target paths

Cole Robinson crobinso at redhat.com
Thu May 20 16:30:40 UTC 2010


On 05/20/2010 12:19 PM, Daniel P. Berrange wrote:
> On Thu, May 20, 2010 at 12:04:05PM -0400, Cole Robinson wrote:
>> Spurious / in a pool target path makes life difficult for apps using the
>> GetVolByPath, and doing other path based comparisons with pools. This
>> has caused a few issues for virt-manager users:
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=494005
>> https://bugzilla.redhat.com/show_bug.cgi?id=593565
>>
>> Add a new util API which removes spurious /, virFileSanitizePath. Sanitize
>> target paths when parsing pool XML, and for paths passed to GetVolByPath.
> 
> If we're going todo this shouldn't we resolve symlinks, and
> canonicalize any '..' or '.' components in the path. IIRC
> gnulib had something for this ?
> 
> Daniel

Certainly '..' and '.', but maybe only resolve symlinks on path lookup?
I don't think users would want their symlinks resolved away in the pool
XML, they could use a symlink named /media to point to a horribly long
complicated /mnt path.

- Cole




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