fuse: Add a new mount option capability

Originally all security.* xattrs were forbidden if selinux is disabled,
which was causing Samba's acl_xattr module to not work, as it would
store the NTACL in security.NTACL. To fix this http://review.gluster.org/#/c/12826/
was sent, which forbid only security.selinux. This opened up a getxattr
call on security.capability before every write fop and others.

Capabilities can be used without selinux, hence if selinux is disabled,
security.capability cannot be forbidden. Hence adding a new mount
option called capability.

Only when "--capability" or "--selinux" mount option is used,
security.capability is sent to the brick, else it is forbidden.

Change-Id: I77f60e0fb541deaa416159e45c78dd2ae653105e
BUG: 1309462
Signed-off-by: Poornima G <pgurusid@redhat.com>
Reviewed-on: http://review.gluster.org/13540
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/tests/bugs/fuse/bug-1309462.t b/tests/bugs/fuse/bug-1309462.t
new file mode 100644
index 00000000000..f3b74bd2935
--- /dev/null
+++ b/tests/bugs/fuse/bug-1309462.t
@@ -0,0 +1,49 @@
+#!/bin/bash
+#
+# https://bugzilla.redhat.com/show_bug.cgi?id=1309462
+# Test the new fuse mount option --capability.
+# Set/get xattr on security.capability should be sent
+# down from fuse, only if --selinux or --capability option
+# is used for mounting.
+
+. $(dirname $0)/../../include.rc
+
+cleanup;
+
+#Basic checks
+TEST glusterd
+TEST pidof glusterd
+
+#Create a distributed volume
+TEST $CLI volume create $V0 $H0:$B0/${V0}{1..2};
+TEST $CLI volume start $V0
+
+# Mount FUSE without selinux:
+TEST glusterfs -s $H0 --volfile-id $V0 $M0
+
+TESTFILE="$M0/testfile"
+TEST touch ${TESTFILE}
+
+TEST ! setfattr -n security.capability -v value ${TESTFILE}
+TEST ! getfattr -n security.capability ${TESTFILE}
+
+TEST umount $M0
+
+# Mount FUSE with selinux:
+TEST glusterfs -s $H0 --volfile-id $V0 --selinux $M0
+
+TEST setfattr -n security.capability -v value ${TESTFILE}
+TEST getfattr -n security.capability ${TESTFILE}
+TEST setfattr -x security.capability ${TESTFILE}
+
+TEST umount $M0
+
+# Mount FUSE with capability:
+TEST glusterfs -s $H0 --volfile-id $V0 --capability $M0
+
+TEST setfattr -n security.capability -v value ${TESTFILE}
+TEST getfattr -n security.capability ${TESTFILE}
+TEST setfattr -x security.capability ${TESTFILE}
+
+TEST umount $M0
+