Re: [Xen-devel] xen 4.4.0 unnecessary dependency on Perl

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [Xen-devel] xen 4.4.0 unnecessary dependency on 
Perl"):
> On Mon, 2014-07-28 at 21:25 +0100, Anthony Wright wrote:
> > To me it would seem wise to minimise the number of xen's dependencies
> > and so use Python instead or if speed is really important here, a custom
> > C program. We have a custom Linux distro that includes xen and to us the
> > size of the distro is very important. This single 8 line section of code
> > introduces a dependency on Perl and so adds another 10M to 20M.
> 
> Please send a patch.
> 
> Now that xend is gone Python is reasonably optional as well I think
> (it's needed for pygrub but not a lot else IIRC). In the absence of any
> other suitable facilities in a base system that might point to a custom
> C utility being the best approach, but you should probably wait for
> other feedback (from Ian Jackson, CCd, in particular) before picking an
> approach.

The perl fragment there is comparing inode numbers.  I think that can
be done with stat(1).  For the fd stdin, it can be done with `stat -L
/dev/stdin'.

Ian.

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