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Re: [Xen-devel] [PATCH 1/2] Make xencommons a bit more idiomatic

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 1/2] Make xencommons a bit more idiomatic
From: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Date: Tue, 30 Aug 2011 17:41:19 +0100
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Jeremy Fitzhardinge writes ("[Xen-devel] [PATCH 1/2] Make xencommons a bit more 
idiomatic"):
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
...
> -if test "x$1" = xstart && \
> -     test -d /proc/xen && \
> -   ! test -f /proc/xen/capabilities && \
> -   ! grep '^xenfs ' /proc/mounts >/dev/null;
> -then
> +if [ "x$1" = xstart -a -d /proc/xen -a \
> +    ! -f /proc/xen/capabilities ] && \
> +    ! grep -qw '^xenfs' /proc/mounts; then
>       mount -t xenfs xenfs /proc/xen

I'm afraid I'm reluctant to accept this purely stylistic change.  I
might if it seemed to me to be a clear improvement, but I don't think
that's the case.

If anything we should be moving towards the use of && rather than -a,
as that is harmless and will make the script depend less on /bin/bash.

Ian.

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