geo-rep: Mask xtime and stime xattrs

Allow access to xtime and stime xattrs only
to gsyncd client and mask them for the rest.

This is to prevent afr from performing self
healing on marker xtime and geo-rep stime
xattr which is not expected as each of which
gets updated them from backend brick and
should not be healed.

Change-Id: I24c30f3cfac636a55fd55be989f8db9f8ca10856
BUG: 1296496
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/13242
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Vijaikumar Mallikarjuna <vmallika@redhat.com>
Smoke: Gluster Build System <jenkins@build.gluster.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index 314585ac41b..6e6d9893936 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -4097,6 +4097,14 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
         op_ret = -1;
         priv = this->private;
 
+        /* Allow access to stime xattr only to geo-rep worker */
+        if (frame->root->pid != GF_CLIENT_PID_GSYNCD && name &&
+            fnmatch ("*.glusterfs.*.stime", name, FNM_PERIOD) == 0) {
+                op_ret = -1;
+                op_errno = ENOATTR;
+                goto out;
+        }
+
         if (loc->inode && IA_ISDIR(loc->inode->ia_type) && name &&
             ZR_FILE_CONTENT_REQUEST(name)) {
                 ret = posix_get_file_contents (this, loc->gfid, &name[15],
@@ -4406,6 +4414,10 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
         list_offset = 0;
         while (remaining_size > 0) {
                 strcpy (keybuffer, list + list_offset);
+                if (frame->root->pid != GF_CLIENT_PID_GSYNCD &&
+                    fnmatch ("*.glusterfs.*.stime", keybuffer, FNM_PERIOD) == 0)
+                        goto ignore;
+
                 size = sys_lgetxattr (real_path, keybuffer, NULL, 0);
                 if (size == -1) {
                         op_ret = -1;
@@ -4453,6 +4465,7 @@ posix_getxattr (call_frame_t *frame, xlator_t *this,
                         goto out;
                 }
 
+ignore:
                 remaining_size -= strlen (keybuffer) + 1;
                 list_offset += strlen (keybuffer) + 1;