nfs,nfs3,mnt3: Transition fh resolution to gfid

Signed-off-by: Shehjar Tikoo <shehjart@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>

BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971

1 files changed, 56 insertions, 5 deletions

diff --git a/xlators/nfs/server/src/nfs-fops.c b/xlators/nfs/server/src/nfs-fops.c
index 544f6c9e..3f342710 100644
--- a/xlators/nfs/server/src/nfs-fops.c
+++ b/xlators/nfs/server/src/nfs-fops.c
@@ -71,6 +71,9 @@ nfs_fop_local_wipe (xlator_t *nfsx, struct nfs_fop_local *l)
         if (l->newparent)
                 inode_unref (l->newparent);
 
+        if (l->dictgfid)
+                dict_unref (l->dictgfid);
+
         mem_put (nfs->foppool, l);
 
         return;
@@ -222,6 +225,49 @@ err:
                 }                                                              \
         } while (0)                                                            \
 
+dict_t *
+nfs_gfid_dict ()
+{
+        uuid_t  newgfid = {0, };
+        char    *dyngfid = NULL;
+        dict_t  *dictgfid = NULL;
+        int     ret = -1;
+
+        dyngfid = GF_CALLOC (1, sizeof (uuid_t), gf_common_mt_char);
+        uuid_generate (newgfid);
+        memcpy (dyngfid, newgfid, sizeof (uuid_t));
+
+        dictgfid = dict_new ();
+        if (!dictgfid) {
+                gf_log (GF_NFS, GF_LOG_ERROR, "Failed to create gfid dict");
+                goto out;
+        }
+
+        ret = dict_set_bin (dictgfid, "gfid-req", dyngfid, sizeof (uuid_t));
+        if (ret < 0) {
+                dict_unref (dictgfid);
+                dictgfid = NULL;
+        }
+
+out:
+        return dictgfid;
+}
+
+#define nfs_fop_gfid_setup(nflcl, retval, erlbl)                        \
+        do {                                                            \
+                if (nflcl) {                                            \
+                        (nflcl)->dictgfid = nfs_gfid_dict ();           \
+                                                                        \
+                        if (!((nflcl)->dictgfid)) {                     \
+                                retval = -EFAULT;                       \
+                                goto erlbl;                             \
+                        }                                               \
+                }                                                       \
+        } while (0)                                                     \
+
+
+
+
 /* Fops Layer Explained
  * The fops layer has three types of functions. They can all be identified by
  * their names. Here are the three patterns:
@@ -281,9 +327,10 @@ nfs_fop_lookup (xlator_t *nfsx, xlator_t *xl, nfs_user_t *nfu, loc_t *loc,
         nfs_fop_handle_frame_create (frame, nfsx, nfu, ret, err);
         nfs_fop_handle_local_init (frame, nfsx, nfl, cbk, local, ret, err);
         nfs_fop_save_root_ino (nfl, loc);
+        nfs_fop_gfid_setup (nfl, ret, err);
 
         STACK_WIND_COOKIE (frame, nfs_fop_lookup_cbk, xl, xl,
-                           xl->fops->lookup, loc, NULL);
+                           xl->fops->lookup, loc, nfl->dictgfid);
 
         ret = 0;
 err:
@@ -603,9 +650,10 @@ nfs_fop_create (xlator_t *nfsx, xlator_t *xl, nfs_user_t *nfu, loc_t *pathloc,
         nfs_fop_handle_frame_create (frame, nfsx, nfu, ret, err);
         nfs_fop_handle_local_init (frame, nfsx, nfl, cbk, local, ret, err);
         nfs_fop_save_root_ino (nfl, pathloc);
+        nfs_fop_gfid_setup (nfl, ret, err);
 
         STACK_WIND_COOKIE (frame, nfs_fop_create_cbk, xl, xl, xl->fops->create,
-                           pathloc, flags, mode, fd, NULL);
+                           pathloc, flags, mode, fd, nfl->dictgfid);
 
         ret = 0;
 err:
@@ -700,9 +748,10 @@ nfs_fop_mkdir (xlator_t *nfsx, xlator_t *xl, nfs_user_t *nfu, loc_t *pathloc,
         nfs_fop_handle_frame_create (frame, nfsx, nfu, ret, err);
         nfs_fop_handle_local_init (frame, nfsx, nfl, cbk, local, ret, err);
         nfs_fop_save_root_ino (nfl, pathloc);
+        nfs_fop_gfid_setup (nfl, ret, err);
 
         STACK_WIND_COOKIE  (frame, nfs_fop_mkdir_cbk, xl, xl, xl->fops->mkdir,
-                            pathloc, mode, NULL);
+                            pathloc, mode, nfl->dictgfid);
         ret = 0;
 err:
         if (ret < 0) {
@@ -747,9 +796,10 @@ nfs_fop_symlink (xlator_t *nfsx, xlator_t *xl, nfs_user_t *nfu, char *target,
         nfs_fop_handle_frame_create (frame, nfsx, nfu, ret, err);
         nfs_fop_handle_local_init (frame, nfsx, nfl, cbk, local, ret, err);
         nfs_fop_save_root_ino (nfl, pathloc);
+        nfs_fop_gfid_setup (nfl, ret, err);
 
         STACK_WIND_COOKIE  (frame, nfs_fop_symlink_cbk, xl, xl,
-                            xl->fops->symlink, target, pathloc, NULL);
+                            xl->fops->symlink, target, pathloc, nfl->dictgfid);
         ret = 0;
 err:
         if (ret < 0) {
@@ -841,9 +891,10 @@ nfs_fop_mknod (xlator_t *nfsx, xlator_t *xl, nfs_user_t *nfu, loc_t *pathloc,
         nfs_fop_handle_frame_create (frame, nfsx, nfu, ret, err);
         nfs_fop_handle_local_init (frame, nfsx, nfl, cbk, local, ret, err);
         nfs_fop_save_root_ino (nfl, pathloc);
+        nfs_fop_gfid_setup (nfl, ret, err);
 
         STACK_WIND_COOKIE  (frame, nfs_fop_mknod_cbk, xl, xl, xl->fops->mknod,
-                            pathloc, mode, dev, NULL);
+                            pathloc, mode, dev, nfl->dictgfid);
         ret = 0;
 err:
         if (ret < 0) {