support for nano second resolution for mtime,ctime,atime attributes.

Change-Id: Id5078f270d0fec280b53d4aa7b16bbaf42a2df05
BUG: 784095
Signed-off-by: krishna <ksriniva@redhat.com>
Reviewed-on: http://review.gluster.com/2730
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>

2 files changed, 23 insertions, 22 deletions

diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c
index 65c03b62ffd..80de4d73802 100644
--- a/xlators/cluster/dht/src/dht-helper.c
+++ b/xlators/cluster/dht/src/dht-helper.c
@@ -466,6 +466,15 @@ out:
                         (a) = (b);              \
         } while (0)
 
+
+#define set_if_greater_time(a, an, b, bn) do {                          \
+                if (((a) < (b)) || (((a) == (b)) && ((an) < (bn)))){    \
+                        (a) = (b);                                      \
+                        (an) = (bn);                                    \
+                }                                                       \
+        } while (0)                                                     \
+
+
 int
 dht_iatt_merge (xlator_t *this, struct iatt *to,
                 struct iatt *from, xlator_t *subvol)
@@ -489,9 +498,12 @@ dht_iatt_merge (xlator_t *this, struct iatt *to,
         set_if_greater (to->ia_uid, from->ia_uid);
         set_if_greater (to->ia_gid, from->ia_gid);
 
-        set_if_greater (to->ia_atime, from->ia_atime);
-        set_if_greater (to->ia_mtime, from->ia_mtime);
-        set_if_greater (to->ia_ctime, from->ia_ctime);
+        set_if_greater_time(to->ia_atime, to->ia_atime_nsec,
+                            from->ia_atime, from->ia_atime_nsec);
+        set_if_greater_time (to->ia_mtime, to->ia_mtime_nsec,
+                             from->ia_mtime, from->ia_mtime_nsec);
+        set_if_greater_time (to->ia_ctime, to->ia_ctime_nsec,
+                             from->ia_ctime, from->ia_ctime_nsec);
 
         return 0;
 }
diff --git a/xlators/nfs/server/src/nfs3-helpers.c b/xlators/nfs/server/src/nfs3-helpers.c
index 5b0daed8253..7075b3e6cde 100644
--- a/xlators/nfs/server/src/nfs3-helpers.c
+++ b/xlators/nfs/server/src/nfs3-helpers.c
@@ -346,25 +346,15 @@ nfs3_stat_to_fattr3 (struct iatt *buf)
 
         fa.fsid = buf->ia_dev;
         fa.fileid = nfs3_iatt_gfid_to_ino (buf);
-        /* FIXME: Handle time resolutions for sub-second granularity */
-        if (buf->ia_atime == 9669) {
-                fa.mtime.seconds = 0;
-                fa.mtime.nseconds = 0;
-                fa.atime.seconds = 0;
-                fa.atime.nseconds = 0;
-        } else {
-                fa.mtime.seconds = buf->ia_mtime;
-                fa.mtime.nseconds = 0;
-                fa.atime.seconds = buf->ia_atime;
-                fa.atime.seconds = 0;
-                fa.atime.nseconds = 0;
-        }
 
         fa.atime.seconds = buf->ia_atime;
-        fa.atime.nseconds = 0;
+        fa.atime.nseconds = buf->ia_atime_nsec;
 
         fa.ctime.seconds = buf->ia_ctime;
-        fa.ctime.nseconds = 0;
+        fa.ctime.nseconds = buf->ia_ctime_nsec;
+
+        fa.mtime.seconds = buf->ia_mtime;
+        fa.mtime.nseconds = buf->ia_mtime_nsec;
 
         return fa;
 }
@@ -408,11 +398,10 @@ nfs3_stat_to_pre_op_attr (struct iatt *pre)
 
         poa.attributes_follow = TRUE;
         poa.pre_op_attr_u.attributes.size = pre->ia_size;
-        if (pre->ia_atime == 9669)
-                poa.pre_op_attr_u.attributes.mtime.seconds = 0;
-        else
-                poa.pre_op_attr_u.attributes.mtime.seconds = pre->ia_mtime;
+        poa.pre_op_attr_u.attributes.mtime.seconds = pre->ia_mtime;
+        poa.pre_op_attr_u.attributes.mtime.nseconds = pre->ia_mtime_nsec;
         poa.pre_op_attr_u.attributes.ctime.seconds = pre->ia_ctime;
+        poa.pre_op_attr_u.attributes.ctime.nseconds = pre->ia_ctime_nsec;
 
 out:
         return poa;