posix/gfid2path: Block access to gfid2path xattr via mount

gfid2path xattr is an internal xattr and should not be
allowed to modify by other applications via gluster
mount. This patch blocks the same.

Updates: #139
Change-Id: Id2cb29797ee1bd77e0e0d2203a47469fd7203355
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: https://review.gluster.org/17744
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Prashanth Pai <ppai@redhat.com>
Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-by: Aravinda VK <avishwan@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/xlators/storage/posix/src/posix-helpers.c b/xlators/storage/posix/src/posix-helpers.c
index 1047c2d6247..e4cd5d6050b 100644
--- a/xlators/storage/posix/src/posix-helpers.c
+++ b/xlators/storage/posix/src/posix-helpers.c
@@ -50,6 +50,7 @@
 #include "glusterfs3-xdr.h"
 #include "hashfn.h"
 #include "glusterfs-acl.h"
+#include "posix-gfid-path.h"
 #include "events.h"
 #include "glusterfsd.h"
 #include <sys/types.h>
@@ -756,6 +757,9 @@ _handle_list_xattr (dict_t *xattr_req, const char *real_path, int fdnum,
                 if (posix_handle_georep_xattrs (NULL, key, NULL, _gf_false))
                         goto next;
 
+                if (posix_is_gfid2path_xattr (key))
+                        goto next;
+
                 if (dict_get (filler->xattr, key))
                         goto next;
 
@@ -1139,6 +1143,9 @@ posix_handle_pair (xlator_t *this, const char *real_path,
         if (XATTR_IS_PATHINFO (key)) {
                 ret = -EACCES;
                 goto out;
+        } else if (posix_is_gfid2path_xattr (key)) {
+                ret = -ENOTSUP;
+                goto out;
         } else if (ZR_FILE_CONTENT_REQUEST(key)) {
                 ret = posix_set_file_contents (this, real_path, key, value,
                                                flags);
@@ -1198,6 +1205,9 @@ posix_fhandle_pair (xlator_t *this, int fd,
         if (XATTR_IS_PATHINFO (key)) {
                 ret = -EACCES;
                 goto out;
+        } else if (posix_is_gfid2path_xattr (key)) {
+                ret = -ENOTSUP;
+                goto out;
         } else if (!strncmp(key, POSIX_ACL_ACCESS_XATTR, strlen(key))
                    && stbuf && IS_DHT_LINKFILE_MODE (stbuf)) {
                 goto out;