nfs: use "/" as subdir for volume mounts

For cases where subdir mounting is checked, it makes it much easier to
return a subdir of "/" in case no subdir is passed. This reduces the
number of corner cases where permissions are checked for subdir mounts,
but not for volume mounts (or the other way around).

The problem was identified by WebNFS mounting a volume, which got denied
after commit e3f48fa2. Handling this would require an exception for
non-subdir mounts, or make non-subdir mounts equal to subdir mounts.
This change takes the 2nd approach.

Change-Id: I0d810ae90b267a2cc3eac8d55368a0f1b0787f6a
Fixes: e3f48fa2 ("nfs: add permission checking for mounting over WebNFS")
BUG: 1468291
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: https://review.gluster.org/17898
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: soumya k <skoduri@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>

0 files changed, 0 insertions, 0 deletions