[OE-core] [PATCH] runqemu: Ensure ROOTFS path is absolute

[Paul Eggleton]

On Friday 21 February 2014 21:57:37 Khem Raj wrote:
> On Feb 20, 2014, at 12:57 PM, Saul Wold <sgw at linux.intel.com> wrote:
> > There is a problem if a relative path is passed to the kernel for NFS
> > usage
> > that it will not correctly find it, so ensure that the ROOTFS path is
> > absolute.
> > 
> > [YOCTO #2807]
> > 
> > Signed-off-by: Saul Wold <sgw at linux.intel.com>
> > ---
> > scripts/runqemu | 4 +++-
> > 1 file changed, 3 insertions(+), 1 deletion(-)
> > 
> > diff --git a/scripts/runqemu b/scripts/runqemu
> > index 0db7ad6..57c5de4 100755
> > --- a/scripts/runqemu
> > +++ b/scripts/runqemu
> > @@ -462,7 +462,9 @@ if [ -z "$ROOTFS" -a "x$FSTYPE" != "xvmdk" ]; then
> > 
> >         error "Unable to determine default rootfs for MACHINE [$MACHINE]"
> >     
> >     fi
> > 
> > fi
> > -# ROOTFS is now set for all cases
> > +# ROOTFS is now set for all cases, now expand it to be an absolute path,
> > it should exist at this point +
> > +ROOTFS=`realpath $ROOTFS`
> 
> I think this change also means we need to add dependency on realpath package
> as prerequisite for build host.

realpath is part of coreutils. Another alternative would be readlink -f (but 
that also appears to be part of coreutils.)

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre