Re: [PATCH 12/14] xfs_scrub: disable private /tmp for scrub service

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On 3/20/18 10:40 PM, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> Don't make /tmp private when invoking xfs_scrub as a service, because
> /tmp might contain or itself be an xfs filesystem mountpoint.

Could you please add a comment to this so that future security analysts
don't change it back?  :)

# xfs_scrub doesn't even use /tmp but <this is why we do this here>

> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
>  scrub/xfs_scrub@xxxxxxxxxxx |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> 
> diff --git a/scrub/xfs_scrub@xxxxxxxxxxx b/scrub/xfs_scrub@xxxxxxxxxxx
> index c14f813..9e6206a 100644
> --- a/scrub/xfs_scrub@xxxxxxxxxxx
> +++ b/scrub/xfs_scrub@xxxxxxxxxxx
> @@ -9,7 +9,7 @@ WorkingDirectory=%I
>  PrivateNetwork=true
>  ProtectSystem=full
>  ProtectHome=read-only
> -PrivateTmp=yes
> +PrivateTmp=no
>  AmbientCapabilities=CAP_SYS_ADMIN CAP_FOWNER CAP_DAC_OVERRIDE CAP_DAC_READ_SEARCH CAP_SYS_RAWIO
>  NoNewPrivileges=yes
>  User=nobody
> 
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