Re: [PATCH 1/1] sstate.bbclass: update the timestamps after install

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Thu, 2014-09-04 at 00:05 -0700, Robert Yang wrote:
> Update the sstate file's timestamps after it is installed, it will be
> very useful for removing the old sstate file, especially, it's not easy
> to remove when use the shared SSTATE_DIR, we can easily remove them with
> this change, for example:
> 
> $ find state-cache -type f -ctime +10 -exec rm -f {} \;
> 
> Will remove the sstate file which isn't used by recent 10 days.
> 
> We can use the -atime, but it is not always available, for example,
> when mounted with "-o noatime".
> 
> The touch is a very light weight action, and the
> scripts/sstate-cache-management.sh also requires this.
> 
> Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
> ---
>  meta/classes/sstate.bbclass |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
> index ead829e..885912d 100644
> --- a/meta/classes/sstate.bbclass
> +++ b/meta/classes/sstate.bbclass
> @@ -618,6 +618,7 @@ sstate_unpack_package () {
>  	mkdir -p ${SSTATE_INSTDIR}
>  	cd ${SSTATE_INSTDIR}
>  	tar -xmvzf ${SSTATE_PKG}
> +	touch --no-dereference ${SSTATE_PKG}
>  }
>  
>  BB_HASHCHECK_FUNCTION = "sstate_checkhashes"

At the very least we need to consider read only files here...

Cheers,

Richard