[OE-core] [PATCH 1/1] image_types.bbclass: add --numeric-owner option to tar command
Richard Purdie
richard.purdie at linuxfoundation.org
Fri Oct 18 14:57:16 UTC 2013
On Fri, 2013-10-18 at 15:47 +0800, Qi.Chen at windriver.com wrote:
> From: Chen Qi <qi.chen at windriver.com>
>
> If the same username exists on both target and the build host, but
> the uids differ, and we start target via NFS, then the uid for the
> user will be incorrect on target.
>
> For example, if postfix's uid on host is 119 and on target is 1024,
> then if we start target via NFS, the uid for postfix will be 119.
>
> The root cause is that when we use runqemu-extract-sdk to generate
> the NFS rootfs for later use, the tar command will respect the username
> instead of uid. So if PSEUDO_PASSWD environment is not set correctly,
> the host /etc/passwd will be used, resulting in wrong uids.
>
> The situation for gid is completely analogous to that of uid.
>
> It's almost impossible for the runqemu-extract-sdk to guess the correct
> location of the needed password file merely based on the target tarball
> name.
>
> This patch solves this problem by adding the '--numeric-owner' option
> to the tar command so that the username/groupname is not recorded in
> the tarball. In this situation, we'll always get the correct uid/gid
> after extracting the tarball.
>
> [YOCTO #5364]
>
> Signed-off-by: Chen Qi <Qi.Chen at windriver.com>
> ---
> meta/classes/image_types.bbclass | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Er, isn't the right fix to fix runqemu-extract-sdk to use numeric IDs
then rather than butcher all the tarballs we create?
Cheers,
Richard
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