glusterfsd: allow subdir mount

Changes:

1. Take subdir mount option in client (mount.gluster / glusterfsd)
2. Pass the subdir mount to server-handshake (from client-handshake)
3. Handle subdir-mount dir's lookup in server-first-lookup and handle
   all fops resolution accordingly with proper gfid of subdir
4. Change the auth/addr module to handle the multiple subdir entries
   in option, and valid parsing.

How to use the feature:

`# mount -t glusterfs $hostname:/$volname/$subdir /$mount_point`
Or
`# mount -t glusterfs $hostname:/$volname -osubdir_mount=$subdir /$mount_point`

Option can be set like:

`# gluster volume set <volname> auth.allow "/subdir1(192.168.1.*),/(192.168.10.*),/subdir2(192.168.8.*)"`

Updates #175

Change-Id: I7ea57f76ddbe6c3862cfe02e13f89e8a39719e11
Signed-off-by: Amar Tumballi <amarts@redhat.com>
Reviewed-on: https://review.gluster.org/17141
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

1 files changed, 99 insertions, 0 deletions

diff --git a/tests/features/subdir-mount.t b/tests/features/subdir-mount.t
new file mode 100644
index 00000000000..2fb0be48bd3
--- /dev/null
+++ b/tests/features/subdir-mount.t
@@ -0,0 +1,99 @@
+#!/bin/bash
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../nfs.rc
+
+cleanup;
+
+## Start and create a volume
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume info;
+
+TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}{1,2,3,4};
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+
+## Mount FUSE with caching disabled (read-write)
+TEST $GFS -s $H0 --volfile-id $V0 --volume-name ${V0}-dht $M0;
+
+TEST ! stat $M0/subdir1;
+TEST mkdir $M0/subdir1;
+TEST ! stat $M0/subdir2;
+TEST mkdir $M0/subdir2;
+TEST ! stat $M0/subdir1/subdir1.1;
+TEST mkdir $M0/subdir1/subdir1.1;
+TEST ! stat $M0/subdir1/subdir1.1/subdir1.2;
+TEST mkdir $M0/subdir1/subdir1.1/subdir1.2;
+
+# mount volume/subdir1
+TEST $GFS --subdir-mount /subdir1 -s $H0 --volfile-id $V0 --volume-name ${V0}-dht $M1;
+
+TEST touch $M0/topfile;
+TEST ! stat $M1/topfile;
+
+TEST touch $M1/subdir1_file;
+TEST ! stat $M0/subdir1_file;
+TEST stat $M0/subdir1/subdir1_file;
+
+# mount volume/subdir2
+TEST $GFS --subdir-mount /subdir2 -s $H0 --volfile-id $V0 $M2;
+
+TEST ! stat $M2/topfile;
+
+TEST touch $M2/subdir2_file;
+TEST ! stat $M0/subdir2_file;
+TEST ! stat $M1/subdir2_file;
+TEST stat $M0/subdir2/subdir2_file;
+
+# umount $M1 / $M2
+TEST umount $M1
+TEST umount $M2
+
+# mount non-existing subdir ; this works with mount.glusterfs,
+# but with glusterfs, the script doesn't returns error.
+#TEST ! $GFS --subdir-mount subdir_not_there -s $H0 --volfile-id $V0 $M1;
+
+# mount subdir with depth
+TEST $GFS --subdir-mount /subdir1/subdir1.1/subdir1.2 -s $H0 --volfile-id $V0 $M2;
+TEST ! stat $M2/topfile;
+TEST touch $M2/subdir1.2_file;
+TEST ! stat $M0/subdir1.2_file;
+TEST stat $M0/subdir1/subdir1.1/subdir1.2/subdir1.2_file;
+
+TEST umount $M2
+
+# Lets validate the options # Not having '*' in here as there was some
+# problem with option validation with this
+TEST $CLI volume set $V0 auth.allow 192.168.1.1
+
+TEST $CLI volume set $V0 auth.allow "192.168.1.1,10.10.\*.\*,::1"
+
+TEST $CLI volume set $V0 auth.allow "/subdir1\(1.2.3.4\),/\(192.168.10.2\|192.168.11.1\),/subdir2\(1.2.3.4\)"
+
+# directories should be absolute
+TEST ! $CLI volume set $V0 auth.allow "subdir2\(1.2.3.4\)"
+
+# support subdir inside subdir
+TEST $CLI volume set $V0 auth.allow '/subdir1/subdir1.1/subdir1.2/\(1.2.3.4\|::1\),/\(192.168.10.1\|192.168.11.1\),/subdir2\(1.2.3.4\)'
+
+# /subdir2 has not allowed IP
+TEST $GFS --subdir-mount /subdir2 -s $H0 --volfile-id $V0 $M1
+TEST stat $M1
+
+TEST $GFS --subdir-mount /subdir1/subdir1.1/subdir1.2 -s $H0 --volfile-id $V0 $M2
+TEST stat $M2
+
+# umount $M1 / $M2
+TEST umount $M0
+TEST umount $M1
+TEST umount $M2
+
+
+TEST $CLI volume stop $V0;
+TEST $CLI volume delete $V0;
+TEST ! $CLI volume info $V0;
+
+## This should clean the mountpoints
+cleanup;