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Re: [PATCH] install.sh: Preserve directory symlinks
- To: Thierry Escande <thierry.escande@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 19 Mar 2026 14:48:07 +0100
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- Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 19 Mar 2026 13:48:09 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 19.03.2026 14:26, Thierry Escande wrote:
>
>
> On 3/19/26 10:31, Jan Beulich wrote:
>> On 13.03.2026 18:25, Thierry Escande wrote:
>>> In various distros (i.e. Debian) some folders like /lib or /var/run are
>>> symlinks. Using the tar option --keep-directory-symlink preserves these
>>> symlinks.
>>>
>>> Signed-off-by: Thierry Escande <thierry.escande@xxxxxxxxxx>
>>> ---
>>> install.sh | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/install.sh b/install.sh
>>> index 3e11c4d46f..5d0b7a4933 100644
>>> --- a/install.sh
>>> +++ b/install.sh
>>> @@ -27,7 +27,7 @@ tmp="`mktemp -d`"
>>> echo "Installing Xen from '$src' to '$dst'..."
>>> (cd $src; tar -cf - * ) | tar -C "$tmp" -xf -
>>>
>>> -(cd $tmp; tar -cf - *) | tar --no-same-owner -C "$dst" -xf -
>>> +(cd $tmp; tar -cf - *) | tar --no-same-owner -C "$dst"
>>> --keep-directory-symlink -xf -
>>
>> How compatible (between flavors of tar as well as between versions of GNU
>> tar) is use of this option?
>
> It's supported by GNU tar since version 1.27 (from ~12 years ago) but it
> seems to be the only implementation that supports it. BSD and busybox
> don't support it. I didn't check for other implementations.
>
> I can add a flavor/version check if that makes sense.
Possibly. One question then is what the behavior was prior to that option
having been introduced.
Jan
|
