On Tue, Aug 09, 2016 at 07:16:20PM +0800, Eryu Guan wrote:
> Introduce a new _overlay_mount_dirs() helper to do the actual
> overlay mount operation and factor _overlay_scratch_mount and
> _overlay_mount code to use a single implemention of
> _overlay_mount_dirs(). Also convert all bare mount of overlay in
> tests to use it.
>
> Suggested-by: Dave Chinner <dchinner@xxxxxxxxxx>
> Signed-off-by: Eryu Guan <eguan@xxxxxxxxxx>
> ---
> common/rc | 21 +++++++++++++++------
> tests/overlay/005 | 6 ++----
> tests/overlay/010 | 5 ++---
> 3 files changed, 19 insertions(+), 13 deletions(-)
>
> diff --git a/common/rc b/common/rc
> index b19b698..6c1c3ff 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -266,6 +266,18 @@ _scratch_mount_options()
> $SCRATCH_DEV $SCRATCH_MNT
> }
>
> +# helper function to do the actual overlayfs mount operation
> +_overlay_mount_dirs()
> +{
> + local lowerdir=$1
> + local upperdir=$2
> + local workdir=$3
> + shift 3
> +
> + $MOUNT_PROG -t overlay -o lowerdir=$lowerdir -o upperdir=$upperdir \
> + -o workdir=$workdir $*
> +}
> +
> # Given a dir, set up 3 subdirectories and mount on the given mnt.
> # The dir is used as the mount device so it can be seen from df or mount
> _overlay_mount()
> @@ -293,12 +305,9 @@ _overlay_mount()
> mkdir -p $dir/$OVERLAY_LOWER_DIR
> mkdir -p $dir/$OVERLAY_WORK_DIR
>
> - $MOUNT_PROG -t overlay $SELINUX_MOUNT_OPTIONS \
> - -o lowerdir=$dir/$OVERLAY_LOWER_DIR \
> - -o upperdir=$dir/$OVERLAY_UPPER_DIR \
> - -o workdir=$dir/$OVERLAY_WORK_DIR \
> - $OVERLAY_MOUNT_OPTIONS $* \
> - $dir $mnt
> + _overlay_mount_dirs $dir/$OVERLAY_LOWER_DIR $dir/$OVERLAY_UPPER_DIR \
> + $dir/$OVERLAY_WORK_DIR $OVERLAY_MOUNT_OPTIONS $* \
> + $dir $mnt
This drops SELINUX_MOUNT_OPTIONS from the mount options. I'd suggest
this option should be moved inside _overlay_mount_dirs() so they are
always applied to overlayfs mounts if set.
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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