libglusterfs: replace default functions with generated versions

Replacing repetitive code like this with code generated from a more
compact "canonical" definition carries several advantages.

 * Ease the process of adding new fops (e.g. GF_FOP_IPC).

 * Ease the process of making global changes to existing fops (e.g.
   adding "xdata").

 * Ensure strict consistency between all of the pieces that must be
   compatible with each other, through both kinds of changes.

What we have right now is just a start.  The above benefits will only
truly be realized when we use the same definitions to generate stubs,
syncops, and perhaps even parts of gfapi or glupy.

This same infrastructure can also be used to reduce code duplication and
potential for error in many of our translators.  NSR already uses a
similar technique, using a few hundred lines of templates to generate a
few *thousand* lines of code.  The ability to make a global "aspect"
change (e.g. to quorum checking) in one place instead of seventy has
already been demonstrated there.

Other candidates for code generation include the AFR/EC transaction
infrastructure, or stub creation/resumption in io-threads.

Change-Id: If7d59de7a088848b557f5aea00741b4fe19017c1
BUG: 1271325
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/9411
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Shyamsundar Ranganathan <srangana@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

10 files changed, 1852 insertions, 3426 deletions

diff --git a/libglusterfs/src/Makefile.am b/libglusterfs/src/Makefile.am
index fd6d275e8fa..904da328bea 100644
--- a/libglusterfs/src/Makefile.am
+++ b/libglusterfs/src/Makefile.am
@@ -1,3 +1,5 @@
+noinst_PYTHON = generator.py gen-defaults.py
+
 libglusterfs_la_CFLAGS = $(GF_CFLAGS) $(GF_DARWIN_LIBGLUSTERFS_CFLAGS) \
 	-DDATADIR=\"$(localstatedir)\"
 
@@ -16,7 +18,7 @@ libgfchangelogdir = $(includedir)/glusterfs/gfchangelog
 CONTRIB_BUILDDIR = $(top_builddir)/contrib
 
 libglusterfs_la_SOURCES = dict.c xlator.c logging.c \
-	hashfn.c defaults.c common-utils.c timer.c inode.c call-stub.c \
+	hashfn.c common-utils.c timer.c inode.c call-stub.c \
 	compat.c fd.c compat-errno.c event.c mem-pool.c gf-dirent.c syscall.c \
 	iobuf.c globals.c statedump.c stack.c checksum.c daemon.c timespec.c \
 	$(CONTRIBDIR)/rbtree/rb.c rbthash.c store.c latency.c \
@@ -28,13 +30,14 @@ libglusterfs_la_SOURCES = dict.c xlator.c logging.c \
 	strfd.c parse-utils.c $(CONTRIBDIR)/mount/mntent.c \
 	$(CONTRIBDIR)/libexecinfo/execinfo.c quota-common-utils.c rot-buffs.c \
 	$(CONTRIBDIR)/timer-wheel/timer-wheel.c \
-	$(CONTRIBDIR)/timer-wheel/find_last_bit.c tw.c
+	$(CONTRIBDIR)/timer-wheel/find_last_bit.c tw.c default-args.c
 
-nodist_libglusterfs_la_SOURCES = y.tab.c graph.lex.c
+nodist_libglusterfs_la_SOURCES = y.tab.c graph.lex.c defaults.c
 
-BUILT_SOURCES = graph.lex.c
+BUILT_SOURCES = graph.lex.c defaults.c
 
-noinst_HEADERS = common-utils.h defaults.h dict.h glusterfs.h hashfn.h timespec.h \
+noinst_HEADERS = common-utils.h defaults.h default-args.h dict.h glusterfs.h \
+	hashfn.h timespec.h \
 	logging.h xlator.h stack.h timer.h list.h inode.h call-stub.h compat.h \
 	fd.h revision.h compat-errno.h event.h mem-pool.h byte-order.h \
 	gf-dirent.h locking.h syscall.h iobuf.h globals.h statedump.h \
@@ -63,7 +66,7 @@ endif
 
 libgfchangelog_HEADERS = changelog.h
 
-EXTRA_DIST = graph.l graph.y
+EXTRA_DIST = graph.l graph.y defaults-tmpl.c
 
 graph.lex.c: graph.l y.tab.h
 	$(LEX) -Pgraphyy -t $(srcdir)/graph.l > $@
@@ -72,7 +75,10 @@ y.tab.c: y.tab.h
 y.tab.h: graph.y
 	$(YACC) -p graphyy -d $(srcdir)/graph.y
 
-CLEANFILES = graph.lex.c y.tab.c y.tab.h
+defaults.c: defaults-tmpl.c generator.py gen-defaults.py
+	$(PYTHON) $(srcdir)/gen-defaults.py $(srcdir)/defaults-tmpl.c > $@
+
+CLEANFILES = graph.lex.c y.tab.c y.tab.h defaults.c
 
 if UNITTEST
 CLEANFILES += *.gcda *.gcno *_xunit.xml
diff --git a/libglusterfs/src/call-stub.h b/libglusterfs/src/call-stub.h
index af4a2f55aff..547fc87e5ba 100644
--- a/libglusterfs/src/call-stub.h
+++ b/libglusterfs/src/call-stub.h
@@ -13,6 +13,7 @@
 
 #include "xlator.h"
 #include "defaults.h"
+#include "default-args.h"
 #include "stack.h"
 #include "list.h"
 
diff --git a/libglusterfs/src/cluster-syncop.h b/libglusterfs/src/cluster-syncop.h
index 0348d5db840..7e17faae0e0 100644
--- a/libglusterfs/src/cluster-syncop.h
+++ b/libglusterfs/src/cluster-syncop.h
@@ -17,6 +17,7 @@
 #include <pthread.h>
 #include <ucontext.h>
 #include "defaults.h"
+#include "default-args.h"
 #include "syncop.h"
 
 typedef struct cluster_local_ {
diff --git a/libglusterfs/src/default-args.c b/libglusterfs/src/default-args.c
new file mode 100644
index 00000000000..216e2b6c9a3
--- /dev/null
+++ b/libglusterfs/src/default-args.c
@@ -0,0 +1,825 @@
+/*
+  Copyright (c) 2008-2015 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+#include "defaults.h"
+
+int
+args_lookup_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     inode_t *inode, struct iatt *buf,
+                     dict_t *xdata, struct iatt *postparent)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (inode)
+                args->inode = inode_ref (inode);
+        if (buf)
+                args->stat = *buf;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_stat_cbk_store (default_args_cbk_t *args,
+                   int32_t op_ret, int32_t op_errno,
+                   struct iatt *buf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret == 0)
+                args->stat = *buf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fstat_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno,
+                    struct iatt *buf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (buf)
+                args->stat = *buf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_truncate_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                       struct iatt *postbuf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (prebuf)
+                args->prestat = *prebuf;
+        if (postbuf)
+                args->poststat = *postbuf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_ftruncate_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                        struct iatt *postbuf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (prebuf)
+                args->prestat = *prebuf;
+        if (postbuf)
+                args->poststat = *postbuf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_access_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_readlink_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       const char *path, struct iatt *stbuf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (path)
+                args->buf = gf_strdup (path);
+        if (stbuf)
+                args->stat = *stbuf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_mknod_cbk_store (default_args_cbk_t *args, int op_ret,
+                    int32_t op_errno, inode_t *inode, struct iatt *buf,
+                    struct iatt *preparent, struct iatt *postparent,
+                    dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (inode)
+                args->inode = inode_ref (inode);
+        if (buf)
+                args->stat = *buf;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_mkdir_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno, inode_t *inode,
+                    struct iatt *buf, struct iatt *preparent,
+                    struct iatt *postparent, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (inode)
+                args->inode = inode_ref (inode);
+        if (buf)
+                args->stat = *buf;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_unlink_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *preparent, struct iatt *postparent,
+                     dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_rmdir_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno,
+                    struct iatt *preparent, struct iatt *postparent,
+                    dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_symlink_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      inode_t *inode, struct iatt *buf,
+                      struct iatt *preparent, struct iatt *postparent,
+                      dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (inode)
+                args->inode = inode_ref (inode);
+        if (buf)
+                args->stat = *buf;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_rename_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                     struct iatt *preoldparent, struct iatt *postoldparent,
+                     struct iatt *prenewparent, struct iatt *postnewparent,
+                     dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (buf)
+                args->stat = *buf;
+        if (preoldparent)
+                args->preparent = *preoldparent;
+        if (postoldparent)
+                args->postparent = *postoldparent;
+        if (prenewparent)
+                args->preparent2 = *prenewparent;
+        if (postnewparent)
+                args->postparent2 = *postnewparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_link_cbk_store (default_args_cbk_t *args,
+                   int32_t op_ret, int32_t op_errno,
+                   inode_t *inode, struct iatt *buf,
+                   struct iatt *preparent, struct iatt *postparent,
+                   dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (inode)
+                args->inode = inode_ref (inode);
+        if (buf)
+                args->stat = *buf;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_create_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     fd_t *fd, inode_t *inode, struct iatt *buf,
+                     struct iatt *preparent, struct iatt *postparent,
+                     dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (fd)
+                args->fd = fd_ref (fd);
+        if (inode)
+                args->inode = inode_ref (inode);
+        if (buf)
+                args->stat = *buf;
+        if (preparent)
+                args->preparent = *preparent;
+        if (postparent)
+                args->postparent = *postparent;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_open_cbk_store (default_args_cbk_t *args,
+                   int32_t op_ret, int32_t op_errno,
+                   fd_t *fd, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (fd)
+                args->fd = fd_ref (fd);
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_readv_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno, struct iovec *vector,
+                    int32_t count, struct iatt *stbuf,
+                    struct iobref *iobref, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret >= 0) {
+                args->vector = iov_dup (vector, count);
+                args->count = count;
+                args->stat = *stbuf;
+                args->iobref = iobref_ref (iobref);
+        }
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_writev_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret >= 0)
+                args->poststat = *postbuf;
+        if (prebuf)
+                args->prestat = *prebuf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_flush_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_fsync_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno,
+                    struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (prebuf)
+                args->prestat = *prebuf;
+        if (postbuf)
+                args->poststat = *postbuf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_opendir_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      fd_t *fd, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (fd)
+                args->fd = fd_ref (fd);
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fsyncdir_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_statfs_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct statvfs *buf, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret == 0)
+                args->statvfs = *buf;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_setxattr_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret,
+                       int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_getxattr_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       dict_t *dict, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (dict)
+                args->xattr = dict_ref (dict);
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fsetxattr_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fgetxattr_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno,
+                        dict_t *dict, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (dict)
+                args->xattr = dict_ref (dict);
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_removexattr_cbk_store (default_args_cbk_t *args,
+                          int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fremovexattr_cbk_store (default_args_cbk_t *args,
+                           int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_lk_cbk_store (default_args_cbk_t *args,
+                 int32_t op_ret, int32_t op_errno,
+                 struct gf_flock *lock, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret == 0)
+                args->lock = *lock;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_inodelk_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret   = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_finodelk_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret   = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_entrylk_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret   = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fentrylk_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret   = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_readdirp_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       gf_dirent_t *entries, dict_t *xdata)
+{
+        gf_dirent_t *stub_entry = NULL, *entry = NULL;
+
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret > 0) {
+                list_for_each_entry (entry, &entries->list, list) {
+                        stub_entry = gf_dirent_for_name (entry->d_name);
+                        if (!stub_entry)
+                                goto out;
+                        stub_entry->d_off = entry->d_off;
+                        stub_entry->d_ino = entry->d_ino;
+                        stub_entry->d_stat = entry->d_stat;
+                        stub_entry->d_type = entry->d_type;
+                        if (entry->inode)
+                                stub_entry->inode = inode_ref (entry->inode);
+                        if (entry->dict)
+                                stub_entry->dict = dict_ref (entry->dict);
+                        list_add_tail (&stub_entry->list,
+                                       &args->entries.list);
+                }
+        }
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+out:
+        return 0;
+}
+
+
+int
+args_readdir_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      gf_dirent_t *entries, dict_t *xdata)
+{
+        gf_dirent_t *stub_entry = NULL, *entry = NULL;
+
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret > 0) {
+                list_for_each_entry (entry, &entries->list, list) {
+                        stub_entry = gf_dirent_for_name (entry->d_name);
+                        if (!stub_entry)
+                                goto out;
+                        stub_entry->d_off = entry->d_off;
+                        stub_entry->d_ino = entry->d_ino;
+                        stub_entry->d_type = entry->d_type;
+                        list_add_tail (&stub_entry->list,
+                                       &args->entries.list);
+                }
+        }
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+out:
+        return 0;
+}
+
+
+int
+args_rchecksum_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno,
+                        uint32_t weak_checksum, uint8_t *strong_checksum,
+                        dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (op_ret >= 0) {
+                args->weak_checksum =
+                        weak_checksum;
+                args->strong_checksum =
+                        memdup (strong_checksum, MD5_DIGEST_LENGTH);
+        }
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_xattrop_cbk_store (default_args_cbk_t *args, int32_t op_ret,
+                        int32_t op_errno, dict_t *xattr, dict_t *xdata)
+{
+        args->op_ret   = op_ret;
+        args->op_errno = op_errno;
+        if (xattr)
+                args->xattr = dict_ref (xattr);
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_fxattrop_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       dict_t *xattr, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xattr)
+                args->xattr = dict_ref (xattr);
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_setattr_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      struct iatt *statpre, struct iatt *statpost,
+                      dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (statpre)
+                args->prestat = *statpre;
+        if (statpost)
+                args->poststat = *statpost;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+
+int
+args_fsetattr_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       struct iatt *statpre, struct iatt *statpost,
+                       dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (statpre)
+                args->prestat = *statpre;
+        if (statpost)
+                args->poststat = *statpost;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_fallocate_cbk_store(default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       struct iatt *statpre, struct iatt *statpost,
+                       dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (statpre)
+                args->prestat = *statpre;
+        if (statpost)
+                args->poststat = *statpost;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_discard_cbk_store(default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *statpre, struct iatt *statpost,
+                     dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (statpre)
+                args->prestat = *statpre;
+        if (statpost)
+                args->poststat = *statpost;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_zerofill_cbk_store(default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *statpre, struct iatt *statpost,
+                     dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (statpre)
+                args->prestat = *statpre;
+        if (statpost)
+                args->poststat = *statpost;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+int
+args_ipc_cbk_store (default_args_cbk_t *args,
+                  int32_t op_ret, int32_t op_errno, dict_t *xdata)
+{
+        args->op_ret = op_ret;
+        args->op_errno = op_errno;
+        if (xdata)
+                args->xdata = dict_ref (xdata);
+
+        return 0;
+}
+
+void
+args_cbk_wipe (default_args_cbk_t *args_cbk)
+{
+        if (!args_cbk)
+                return;
+        if (args_cbk->inode)
+                inode_unref (args_cbk->inode);
+
+        GF_FREE ((char *)args_cbk->buf);
+
+        GF_FREE (args_cbk->vector);
+
+        if (args_cbk->iobref)
+                iobref_unref (args_cbk->iobref);
+
+        if (args_cbk->fd)
+                fd_unref (args_cbk->fd);
+
+        if (args_cbk->xattr)
+                dict_unref (args_cbk->xattr);
+
+        GF_FREE (args_cbk->strong_checksum);
+
+        if (args_cbk->xdata)
+                dict_unref (args_cbk->xdata);
+
+        if (!list_empty (&args_cbk->entries.list))
+                gf_dirent_free (&args_cbk->entries);
+}
diff --git a/libglusterfs/src/default-args.h b/libglusterfs/src/default-args.h
new file mode 100644
index 00000000000..9524e9b0677
--- /dev/null
+++ b/libglusterfs/src/default-args.h
@@ -0,0 +1,270 @@
+/*
+  Copyright (c) 2008-2015 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+/* libglusterfs/src/defaults.h:
+       This file contains definition of default fops and mops functions.
+*/
+
+#ifndef _DEFAULT_ARGS_H
+#define _DEFAULT_ARGS_H
+
+#include "xlator.h"
+
+int
+args_lookup_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     inode_t *inode, struct iatt *buf,
+                     dict_t *xdata, struct iatt *postparent);
+
+
+int
+args_stat_cbk_store (default_args_cbk_t *args,
+                   int32_t op_ret, int32_t op_errno,
+                   struct iatt *buf, dict_t *xdata);
+
+int
+args_fstat_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno,
+                    struct iatt *buf, dict_t *xdata);
+
+int
+args_truncate_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                       struct iatt *postbuf, dict_t *xdata);
+
+
+int
+args_ftruncate_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
+                        struct iatt *postbuf, dict_t *xdata);
+
+
+int
+args_access_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+
+int
+args_readlink_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       const char *path, struct iatt *stbuf, dict_t *xdata);
+
+int
+args_mknod_cbk_store (default_args_cbk_t *args, int32_t op_ret,
+                    int32_t op_errno, inode_t *inode, struct iatt *buf,
+                    struct iatt *preparent, struct iatt *postparent,
+                    dict_t *xdata);
+
+int
+args_mkdir_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno, inode_t *inode,
+                    struct iatt *buf, struct iatt *preparent,
+                    struct iatt *postparent, dict_t *xdata);
+
+int
+args_unlink_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *preparent, struct iatt *postparent,
+                     dict_t *xdata);
+
+int
+args_rmdir_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno,
+                    struct iatt *preparent, struct iatt *postparent,
+                    dict_t *xdata);
+
+int
+args_symlink_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      inode_t *inode, struct iatt *buf,
+                      struct iatt *preparent, struct iatt *postparent,
+                      dict_t *xdata);
+
+
+int
+args_rename_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno, struct iatt *buf,
+                     struct iatt *preoldparent, struct iatt *postoldparent,
+                     struct iatt *prenewparent, struct iatt *postnewparent,
+                     dict_t *xdata);
+
+int
+args_link_cbk_store (default_args_cbk_t *args,
+                   int32_t op_ret, int32_t op_errno,
+                   inode_t *inode, struct iatt *buf,
+                   struct iatt *preparent, struct iatt *postparent,
+                   dict_t *xdata);
+
+int
+args_create_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     fd_t *fd, inode_t *inode, struct iatt *buf,
+                     struct iatt *preparent, struct iatt *postparent,
+                     dict_t *xdata);
+
+int
+args_open_cbk_store (default_args_cbk_t *args,
+                   int32_t op_ret, int32_t op_errno,
+                   fd_t *fd, dict_t *xdata);
+
+int
+args_readv_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno, struct iovec *vector,
+                    int32_t count, struct iatt *stbuf,
+                    struct iobref *iobref, dict_t *xdata);
+
+int
+args_writev_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata);
+
+
+int
+args_flush_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+
+int
+args_fsync_cbk_store (default_args_cbk_t *args,
+                    int32_t op_ret, int32_t op_errno,
+                    struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata);
+
+int
+args_opendir_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      fd_t *fd, dict_t *xdata);
+
+int
+args_fsyncdir_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_statfs_cbk_store (default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct statvfs *buf, dict_t *xdata);
+
+int
+args_setxattr_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret,
+                       int32_t op_errno, dict_t *xdata);
+
+int
+args_getxattr_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       dict_t *dict, dict_t *xdata);
+
+int
+args_fsetxattr_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_fgetxattr_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno,
+                        dict_t *dict, dict_t *xdata);
+
+int
+args_removexattr_cbk_store (default_args_cbk_t *args,
+                          int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_fremovexattr_cbk_store (default_args_cbk_t *args,
+                           int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_lk_cbk_store (default_args_cbk_t *args,
+                 int32_t op_ret, int32_t op_errno,
+                 struct gf_flock *lock, dict_t *xdata);
+
+
+int
+args_inodelk_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_finodelk_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_entrylk_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+int
+args_fentrylk_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+
+int
+args_readdirp_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       gf_dirent_t *entries, dict_t *xdata);
+
+
+int
+args_readdir_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      gf_dirent_t *entries, dict_t *xdata);
+
+
+int
+args_rchecksum_cbk_store (default_args_cbk_t *args,
+                        int32_t op_ret, int32_t op_errno,
+                        uint32_t weak_checksum, uint8_t *strong_checksum,
+                        dict_t *xdata);
+
+
+int
+args_xattrop_cbk_store (default_args_cbk_t *args, int32_t op_ret,
+                        int32_t op_errno, dict_t *xattr, dict_t *xdata);
+
+
+int
+args_fxattrop_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       dict_t *xattr, dict_t *xdata);
+
+int
+args_setattr_cbk_store (default_args_cbk_t *args,
+                      int32_t op_ret, int32_t op_errno,
+                      struct iatt *statpre, struct iatt *statpost,
+                      dict_t *xdata);
+
+
+int
+args_fsetattr_cbk_store (default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       struct iatt *statpre, struct iatt *statpost,
+                       dict_t *xdata);
+
+int
+args_fallocate_cbk_store(default_args_cbk_t *args,
+                       int32_t op_ret, int32_t op_errno,
+                       struct iatt *statpre, struct iatt *statpost,
+                       dict_t *xdata);
+
+int
+args_discard_cbk_store(default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *statpre, struct iatt *statpost,
+                     dict_t *xdata);
+
+int
+args_zerofill_cbk_store(default_args_cbk_t *args,
+                     int32_t op_ret, int32_t op_errno,
+                     struct iatt *statpre, struct iatt *statpost,
+                     dict_t *xdata);
+
+int
+args_ipc_cbk_store (default_args_cbk_t *args,
+                  int32_t op_ret, int32_t op_errno, dict_t *xdata);
+
+void
+args_cbk_wipe (default_args_cbk_t *args_cbk);
+
+#endif /* _DEFAULT_ARGS_H */
diff --git a/libglusterfs/src/defaults-tmpl.c b/libglusterfs/src/defaults-tmpl.c
new file mode 100644
index 00000000000..4d83368cc32
--- /dev/null
+++ b/libglusterfs/src/defaults-tmpl.c
@@ -0,0 +1,185 @@
+/*
+  Copyright (c) 2008-2015 Red Hat, Inc. <http://www.redhat.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+/* libglusterfs/src/defaults.c:
+   This file contains functions, which are used to fill the 'fops', 'cbk'
+   structures in the xlator structures, if they are not written. Here, all the
+   function calls are plainly forwared to the first child of the xlator, and
+   all the *_cbk function does plain STACK_UNWIND of the frame, and returns.
+
+   This function also implements *_resume () functions, which does same
+   operation as a fop().
+
+   All the functions are plain enough to understand.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+#include "defaults.h"
+
+#pragma generate
+
+struct xlator_fops _default_fops = {
+        .create = default_create,
+        .open = default_open,
+        .stat = default_stat,
+        .readlink = default_readlink,
+        .mknod = default_mknod,
+        .mkdir = default_mkdir,
+        .unlink = default_unlink,
+        .rmdir = default_rmdir,
+        .symlink = default_symlink,
+        .rename = default_rename,
+        .link = default_link,
+        .truncate = default_truncate,
+        .readv = default_readv,
+        .writev = default_writev,
+        .statfs = default_statfs,
+        .flush = default_flush,
+        .fsync = default_fsync,
+        .setxattr = default_setxattr,
+        .getxattr = default_getxattr,
+        .fsetxattr = default_fsetxattr,
+        .fgetxattr = default_fgetxattr,
+        .removexattr = default_removexattr,
+        .fremovexattr = default_fremovexattr,
+        .opendir = default_opendir,
+        .readdir = default_readdir,
+        .readdirp = default_readdirp,
+        .fsyncdir = default_fsyncdir,
+        .access = default_access,
+        .ftruncate = default_ftruncate,
+        .fstat = default_fstat,
+        .lk = default_lk,
+        .inodelk = default_inodelk,
+        .finodelk = default_finodelk,
+        .entrylk = default_entrylk,
+        .fentrylk = default_fentrylk,
+        .lookup = default_lookup,
+        .rchecksum = default_rchecksum,
+        .xattrop = default_xattrop,
+        .fxattrop = default_fxattrop,
+        .setattr = default_setattr,
+        .fsetattr = default_fsetattr,
+	.fallocate = default_fallocate,
+	.discard = default_discard,
+        .zerofill = default_zerofill,
+        .ipc = default_ipc,
+
+        .getspec = default_getspec,
+};
+struct xlator_fops *default_fops = &_default_fops;
+
+
+/*
+ * Remaining functions don't follow the fop calling conventions, so they're
+ * not generated.
+ */
+
+int32_t
+default_forget (xlator_t *this, inode_t *inode)
+{
+        gf_log_callingfn (this->name, GF_LOG_WARNING, "xlator does not "
+                          "implement forget_cbk");
+        return 0;
+}
+
+
+int32_t
+default_releasedir (xlator_t *this, fd_t *fd)
+{
+        gf_log_callingfn (this->name, GF_LOG_WARNING, "xlator does not "
+                          "implement releasedir_cbk");
+        return 0;
+}
+
+int32_t
+default_release (xlator_t *this, fd_t *fd)
+{
+        gf_log_callingfn (this->name, GF_LOG_WARNING, "xlator does not "
+                          "implement release_cbk");
+        return 0;
+}
+
+/* notify */
+int
+default_notify (xlator_t *this, int32_t event, void *data, ...)
+{
+        switch (event) {
+        case GF_EVENT_PARENT_UP:
+        case GF_EVENT_PARENT_DOWN:
+        {
+                xlator_list_t *list = this->children;
+
+                while (list) {
+                        xlator_notify (list->xlator, event, this);
+                        list = list->next;
+                }
+        }
+        break;
+        case GF_EVENT_CHILD_CONNECTING:
+        case GF_EVENT_CHILD_MODIFIED:
+        case GF_EVENT_CHILD_DOWN:
+        case GF_EVENT_CHILD_UP:
+        case GF_EVENT_AUTH_FAILED:
+        {
+                xlator_list_t *parent = this->parents;
+
+                /*
+                 * Handle case of CHILD_* & AUTH_FAILED event specially, send
+                 * it to fuse.
+                 */
+                if (!parent && this->ctx && this->ctx->master) {
+                        xlator_notify (this->ctx->master, event, this->graph,
+                                       NULL);
+                }
+
+                while (parent) {
+                        if (parent->xlator->init_succeeded)
+                                xlator_notify (parent->xlator, event,
+                                               this, NULL);
+                        parent = parent->next;
+                }
+        }
+        break;
+        default:
+        {
+                xlator_list_t *parent = this->parents;
+
+                while (parent) {
+                        if (parent->xlator->init_succeeded)
+                                xlator_notify (parent->xlator, event,
+                                               this, NULL);
+                        parent = parent->next;
+                }
+        }
+        /*
+         * Apparently our picky-about-everything else coding standard allows
+         * adjacent same-indendation-level close braces.  Clearly it has
+         * nothing to do with readability.
+         */
+        }
+
+        return 0;
+}
+
+int32_t
+default_mem_acct_init (xlator_t *this)
+{
+        int     ret = -1;
+
+        ret = xlator_mem_acct_init (this, gf_common_mt_end);
+
+        return ret;
+}
diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
deleted file mode 100644
index 2a4b20cebd8..00000000000
--- a/libglusterfs/src/defaults.c
+++ /dev/null
@@ -1,3167 +0,0 @@
-/*
-  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
-  This file is part of GlusterFS.
-
-  This file is licensed to you under your choice of the GNU Lesser
-  General Public License, version 3 or any later version (LGPLv3 or
-  later), or the GNU General Public License, version 2 (GPLv2), in all
-  cases as published by the Free Software Foundation.
-*/
-
-/* libglusterfs/src/defaults.c:
-   This file contains functions, which are used to fill the 'fops', 'cbk'
-   structures in the xlator structures, if they are not written. Here, all the
-   function calls are plainly forwared to the first child of the xlator, and
-   all the *_cbk function does plain STACK_UNWIND of the frame, and returns.
-
-   This function also implements *_resume () functions, which does same
-   operation as a fop().
-
-   All the functions are plain enough to understand.
-*/
-
-#include "xlator.h"
-#include "defaults.h"
-#include "libglusterfs-messages.h"
-
-/* FAILURE_CBK function section */
-
-int32_t
-default_lookup_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (lookup, frame, -1, op_errno, NULL, NULL,
-                             NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_stat_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (stat, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_truncate_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (truncate, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_ftruncate_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (ftruncate, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_access_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (access, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-int32_t
-default_readlink_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (readlink, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_mknod_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (mknod, frame, -1, op_errno, NULL, NULL, NULL,
-                             NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_mkdir_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
-                             NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_unlink_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (unlink, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_rmdir_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (rmdir, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_symlink_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (symlink, frame, -1, op_errno, NULL, NULL, NULL,
-                             NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_rename_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (rename, frame, -1, op_errno, NULL, NULL, NULL,
-                             NULL, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_link_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (link, frame, -1, op_errno, NULL, NULL, NULL,
-                             NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_create_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (create, frame, -1, op_errno, NULL, NULL, NULL,
-                             NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_open_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (open, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_readv_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (readv, frame, -1, op_errno, NULL, -1, NULL,
-                             NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_writev_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (writev, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_flush_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (flush, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-
-
-int32_t
-default_fsync_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fsync, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_fstat_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fstat, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_opendir_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (opendir, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_fsyncdir_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fsyncdir, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-int32_t
-default_statfs_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (statfs, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_setxattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (setxattr, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-
-int32_t
-default_fsetxattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fsetxattr, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-
-
-int32_t
-default_fgetxattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fgetxattr, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_getxattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (getxattr, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_xattrop_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (xattrop, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_fxattrop_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fxattrop, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_removexattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (removexattr, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-
-int32_t
-default_fremovexattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fremovexattr, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-int32_t
-default_lk_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (lk, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_inodelk_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (inodelk, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-
-int32_t
-default_finodelk_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (finodelk, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-int32_t
-default_entrylk_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (entrylk, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-int32_t
-default_fentrylk_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fentrylk, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-
-int32_t
-default_rchecksum_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (rchecksum, frame, -1, op_errno, -1, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_readdir_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (readdir, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_readdirp_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (readdirp, frame, -1, op_errno, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_setattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (setattr, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_fsetattr_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (fsetattr, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_fallocate_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT(fallocate, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_discard_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT(discard, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-int32_t
-default_zerofill_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT(zerofill, frame, -1, op_errno, NULL, NULL, NULL);
-        return 0;
-}
-
-
-int32_t
-default_getspec_failure_cbk (call_frame_t *frame, int32_t op_errno)
-{
-        STACK_UNWIND_STRICT (getspec, frame, -1, op_errno, NULL);
-        return 0;
-}
-
-/* _cbk_resume section */
-
-int32_t
-default_lookup_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno, inode_t *inode,
-                           struct iatt *buf, dict_t *xdata,
-                           struct iatt *postparent)
-{
-        STACK_UNWIND_STRICT (lookup, frame, op_ret, op_errno, inode, buf,
-                             xdata, postparent);
-        return 0;
-}
-
-int32_t
-default_stat_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                         dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (stat, frame, op_ret, op_errno, buf, xdata);
-        return 0;
-}
-
-
-int32_t
-default_truncate_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno,
-                             struct iatt *prebuf, struct iatt *postbuf,
-                             dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (truncate, frame, op_ret, op_errno, prebuf,
-                             postbuf, xdata);
-        return 0;
-}
-
-int32_t
-default_ftruncate_cbk_resume (call_frame_t *frame, void *cookie,
-                              xlator_t *this, int32_t op_ret, int32_t op_errno,
-                              struct iatt *prebuf, struct iatt *postbuf,
-                              dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (ftruncate, frame, op_ret, op_errno, prebuf,
-                             postbuf, xdata);
-        return 0;
-}
-
-int32_t
-default_access_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (access, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_readlink_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno,
-                             const char *path, struct iatt *buf, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readlink, frame, op_ret, op_errno, path, buf,
-                             xdata);
-        return 0;
-}
-
-
-int32_t
-default_mknod_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, inode_t *inode,
-                          struct iatt *buf, struct iatt *preparent,
-                          struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (mknod, frame, op_ret, op_errno, inode,
-                             buf, preparent, postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_mkdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, inode_t *inode,
-                          struct iatt *buf, struct iatt *preparent,
-                          struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (mkdir, frame, op_ret, op_errno, inode,
-                             buf, preparent, postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_unlink_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno,
-                           struct iatt *preparent, struct iatt *postparent,
-                           dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (unlink, frame, op_ret, op_errno, preparent,
-                             postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_rmdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, struct iatt *preparent,
-                          struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (rmdir, frame, op_ret, op_errno, preparent,
-                             postparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_symlink_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, inode_t *inode,
-                            struct iatt *buf, struct iatt *preparent,
-                            struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (symlink, frame, op_ret, op_errno, inode, buf,
-                             preparent, postparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_rename_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                           struct iatt *preoldparent,
-                           struct iatt *postoldparent,
-                           struct iatt *prenewparent,
-                           struct iatt *postnewparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (rename, frame, op_ret, op_errno, buf, preoldparent,
-                             postoldparent, prenewparent, postnewparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_link_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno, inode_t *inode,
-                         struct iatt *buf, struct iatt *preparent,
-                         struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (link, frame, op_ret, op_errno, inode, buf,
-                             preparent, postparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_create_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno, fd_t *fd,
-                           inode_t *inode, struct iatt *buf,
-                           struct iatt *preparent, struct iatt *postparent,
-                           dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
-                             preparent, postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_open_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno, fd_t *fd,
-                         dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_readv_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno,
-                          struct iovec *vector, int32_t count,
-                          struct iatt *stbuf, struct iobref *iobref,
-                          dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
-                             stbuf, iobref, xdata);
-        return 0;
-}
-
-
-int32_t
-default_writev_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno,
-                           struct iatt *prebuf, struct iatt *postbuf,
-                           dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf, xdata);
-        return 0;
-}
-
-
-int32_t
-default_flush_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (flush, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-
-int32_t
-default_fsync_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                          struct iatt *postbuf, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsync, frame, op_ret, op_errno, prebuf, postbuf,
-                             xdata);
-        return 0;
-}
-
-int32_t
-default_fstat_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                          dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fstat, frame, op_ret, op_errno, buf, xdata);
-        return 0;
-}
-
-int32_t
-default_opendir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, fd_t *fd,
-                            dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (opendir, frame, op_ret, op_errno, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_fsyncdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsyncdir, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_statfs_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno,
-                           struct statvfs *buf, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (statfs, frame, op_ret, op_errno, buf, xdata);
-        return 0;
-}
-
-
-int32_t
-default_setxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_fsetxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                              int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsetxattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-
-int32_t
-default_fgetxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                              int32_t op_ret, int32_t op_errno, dict_t *dict,
-                              dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-
-int32_t
-default_getxattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno, dict_t *dict,
-                             dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-int32_t
-default_xattrop_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, dict_t *dict,
-                            dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (xattrop, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-int32_t
-default_fxattrop_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, dict_t *dict,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fxattrop, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-
-int32_t
-default_removexattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno,
-                         dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (removexattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_fremovexattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                                 int32_t op_ret, int32_t op_errno,
-                                 dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fremovexattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_lk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno, struct gf_flock *lock,
-                       dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (lk, frame, op_ret, op_errno, lock, xdata);
-        return 0;
-}
-
-int32_t
-default_inodelk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (inodelk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_finodelk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (finodelk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_entrylk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (entrylk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_fentrylk_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fentrylk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_rchecksum_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                              int32_t op_ret, int32_t op_errno,
-                              uint32_t weak_checksum, uint8_t *strong_checksum,
-                              dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (rchecksum, frame, op_ret, op_errno, weak_checksum,
-                             strong_checksum, xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdir_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno,
-                            gf_dirent_t *entries, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readdir, frame, op_ret, op_errno, entries, xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdirp_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno,
-                             gf_dirent_t *entries, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readdirp, frame, op_ret, op_errno, entries, xdata);
-        return 0;
-}
-
-int32_t
-default_setattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno,
-                            struct iatt *statpre, struct iatt *statpost,
-                            dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (setattr, frame, op_ret, op_errno, statpre,
-                             statpost, xdata);
-        return 0;
-}
-
-int32_t
-default_fsetattr_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno,
-                             struct iatt *statpre, struct iatt *statpost,
-                             dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsetattr, frame, op_ret, op_errno, statpre,
-                             statpost, xdata);
-        return 0;
-}
-
-int32_t
-default_fallocate_cbk_resume(call_frame_t *frame, void *cookie, xlator_t *this,
-                             int32_t op_ret, int32_t op_errno,
-                             struct iatt *pre, struct iatt *post,
-                             dict_t *xdata)
-{
-        STACK_UNWIND_STRICT(fallocate, frame, op_ret, op_errno,
-                            pre, post, xdata);
-        return 0;
-}
-
-int32_t
-default_discard_cbk_resume(call_frame_t *frame, void *cookie, xlator_t *this,
-                           int32_t op_ret, int32_t op_errno, struct iatt *pre,
-                           struct iatt *post, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT(discard, frame, op_ret, op_errno, pre, post, xdata);
-        return 0;
-}
-
-int32_t
-default_zerofill_cbk_resume(call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, struct iatt *pre,
-                            struct iatt *post, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT(zerofill, frame, op_ret, op_errno, pre,
-                           post, xdata);
-        return 0;
-}
-
-
-int32_t
-default_getspec_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
-                            int32_t op_ret, int32_t op_errno, char *spec_data)
-{
-        STACK_UNWIND_STRICT (getspec, frame, op_ret, op_errno, spec_data);
-        return 0;
-}
-
-/* _CBK function section */
-
-int32_t
-default_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, inode_t *inode,
-                    struct iatt *buf, dict_t *xdata, struct iatt *postparent)
-{
-        STACK_UNWIND_STRICT (lookup, frame, op_ret, op_errno, inode, buf,
-                             xdata, postparent);
-        return 0;
-}
-
-int32_t
-default_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                  int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                  dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (stat, frame, op_ret, op_errno, buf, xdata);
-        return 0;
-}
-
-
-int32_t
-default_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                      struct iatt *postbuf,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (truncate, frame, op_ret, op_errno, prebuf,
-                             postbuf, xdata);
-        return 0;
-}
-
-int32_t
-default_ftruncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                       struct iatt *postbuf,
-                       dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (ftruncate, frame, op_ret, op_errno, prebuf,
-                             postbuf, xdata);
-        return 0;
-}
-
-int32_t
-default_access_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno,
-                    dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (access, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_readlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, const char *path,
-                      struct iatt *buf, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readlink, frame, op_ret, op_errno, path, buf,
-                             xdata);
-        return 0;
-}
-
-
-int32_t
-default_mknod_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, inode_t *inode,
-                   struct iatt *buf, struct iatt *preparent,
-                   struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (mknod, frame, op_ret, op_errno, inode,
-                             buf, preparent, postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, inode_t *inode,
-                   struct iatt *buf, struct iatt *preparent,
-                   struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (mkdir, frame, op_ret, op_errno, inode,
-                             buf, preparent, postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, struct iatt *preparent,
-                    struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (unlink, frame, op_ret, op_errno, preparent,
-                             postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct iatt *preparent,
-                   struct iatt *postparent,
-                   dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (rmdir, frame, op_ret, op_errno, preparent,
-                             postparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_symlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, inode_t *inode,
-                     struct iatt *buf, struct iatt *preparent,
-                     struct iatt *postparent, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (symlink, frame, op_ret, op_errno, inode, buf,
-                             preparent, postparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                    struct iatt *preoldparent, struct iatt *postoldparent,
-                    struct iatt *prenewparent, struct iatt *postnewparent,
-                    dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (rename, frame, op_ret, op_errno, buf, preoldparent,
-                             postoldparent, prenewparent, postnewparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                  int32_t op_ret, int32_t op_errno, inode_t *inode,
-                  struct iatt *buf, struct iatt *preparent,
-                  struct iatt *postparent,
-                  dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (link, frame, op_ret, op_errno, inode, buf,
-                             preparent, postparent, xdata);
-        return 0;
-}
-
-
-int32_t
-default_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, fd_t *fd, inode_t *inode,
-                    struct iatt *buf, struct iatt *preparent,
-                    struct iatt *postparent,
-                    dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
-                             preparent, postparent, xdata);
-        return 0;
-}
-
-int32_t
-default_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                  int32_t op_ret, int32_t op_errno, fd_t *fd,
-                  dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct iovec *vector,
-                   int32_t count, struct iatt *stbuf, struct iobref *iobref,
-                   dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readv, frame, op_ret, op_errno, vector, count,
-                             stbuf, iobref, xdata);
-        return 0;
-}
-
-
-int32_t
-default_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                    struct iatt *postbuf,
-                    dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (writev, frame, op_ret, op_errno, prebuf, postbuf, xdata);
-        return 0;
-}
-
-
-int32_t
-default_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno,
-                   dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (flush, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-
-int32_t
-default_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                   struct iatt *postbuf,
-                   dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsync, frame, op_ret, op_errno, prebuf, postbuf,
-                             xdata);
-        return 0;
-}
-
-int32_t
-default_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                   int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                   dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fstat, frame, op_ret, op_errno, buf, xdata);
-        return 0;
-}
-
-int32_t
-default_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, fd_t *fd,
-                     dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (opendir, frame, op_ret, op_errno, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_fsyncdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsyncdir, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, struct statvfs *buf,
-                    dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (statfs, frame, op_ret, op_errno, buf, xdata);
-        return 0;
-}
-
-
-int32_t
-default_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (setxattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_fsetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno,
-                       dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsetxattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-
-int32_t
-default_fgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno, dict_t *dict,
-                       dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fgetxattr, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-
-int32_t
-default_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, dict_t *dict,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-int32_t
-default_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, dict_t *dict,
-                     dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (xattrop, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-int32_t
-default_fxattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, dict_t *dict,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fxattrop, frame, op_ret, op_errno, dict, xdata);
-        return 0;
-}
-
-
-int32_t
-default_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                         int32_t op_ret, int32_t op_errno,
-                         dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (removexattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_fremovexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                          int32_t op_ret, int32_t op_errno,
-                          dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fremovexattr, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                int32_t op_ret, int32_t op_errno, struct gf_flock *lock,
-                dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (lk, frame, op_ret, op_errno, lock, xdata);
-        return 0;
-}
-
-int32_t
-default_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno,
-                     dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (inodelk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_finodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (finodelk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno,
-                     dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (entrylk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-int32_t
-default_fentrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fentrylk, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-int32_t
-default_rchecksum_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                       int32_t op_ret, int32_t op_errno, uint32_t weak_checksum,
-                       uint8_t *strong_checksum,
-                       dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (rchecksum, frame, op_ret, op_errno, weak_checksum,
-                             strong_checksum, xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, gf_dirent_t *entries,
-                     dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readdir, frame, op_ret, op_errno, entries, xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, gf_dirent_t *entries,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (readdirp, frame, op_ret, op_errno, entries, xdata);
-        return 0;
-}
-
-int32_t
-default_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, struct iatt *statpre,
-                     struct iatt *statpost,
-                     dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (setattr, frame, op_ret, op_errno, statpre,
-                             statpost, xdata);
-        return 0;
-}
-
-int32_t
-default_fsetattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, struct iatt *statpre,
-                      struct iatt *statpost,
-                      dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (fsetattr, frame, op_ret, op_errno, statpre,
-                             statpost, xdata);
-        return 0;
-}
-
-int32_t
-default_fallocate_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
-                      int32_t op_ret, int32_t op_errno, struct iatt *pre,
-                      struct iatt *post, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT(fallocate, frame, op_ret, op_errno, pre, post, xdata);
-        return 0;
-}
-
-int32_t
-default_discard_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, struct iatt *pre,
-                    struct iatt *post, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT(discard, frame, op_ret, op_errno, pre, post, xdata);
-        return 0;
-}
-
-int32_t
-default_zerofill_cbk(call_frame_t *frame, void *cookie, xlator_t *this,
-                    int32_t op_ret, int32_t op_errno, struct iatt *pre,
-                    struct iatt *post, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT(zerofill, frame, op_ret, op_errno, pre,
-                           post, xdata);
-        return 0;
-}
-
-
-int32_t
-default_getspec_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                     int32_t op_ret, int32_t op_errno, char *spec_data)
-{
-        STACK_UNWIND_STRICT (getspec, frame, op_ret, op_errno, spec_data);
-        return 0;
-}
-
-
-int32_t
-default_ipc_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
-                 int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        STACK_UNWIND_STRICT (ipc, frame, op_ret, op_errno, xdata);
-        return 0;
-}
-
-
-/* RESUME */
-
-int32_t
-default_fgetxattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                          const char *name, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fgetxattr_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fgetxattr, fd, name, xdata);
-        return 0;
-}
-
-int32_t
-default_fsetxattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                          dict_t *dict, int32_t flags, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fsetxattr_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_setxattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                         dict_t *dict, int32_t flags, dict_t *xdata)
-{
-        STACK_WIND (frame, default_setxattr_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->setxattr, loc, dict, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_statfs_resume (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
-{
-        STACK_WIND (frame, default_statfs_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->statfs, loc, xdata);
-        return 0;
-}
-
-int32_t
-default_fsyncdir_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                         int32_t flags, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fsyncdir_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fsyncdir, fd, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_opendir_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                        fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND (frame, default_opendir_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->opendir, loc, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_fstat_resume (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fstat_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fstat, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_fsync_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                      int32_t flags, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fsync_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fsync, fd, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_flush_resume (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND (frame, default_flush_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->flush, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_writev_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                       struct iovec *vector, int32_t count, off_t off,
-                       uint32_t flags, struct iobref *iobref, dict_t *xdata)
-{
-        STACK_WIND (frame, default_writev_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->writev, fd, vector, count, off,
-                    flags, iobref, xdata);
-        return 0;
-}
-
-int32_t
-default_readv_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                      size_t size, off_t offset, uint32_t flags, dict_t *xdata)
-{
-        STACK_WIND (frame, default_readv_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->readv, fd, size, offset, flags, xdata);
-        return 0;
-}
-
-
-int32_t
-default_open_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                     int32_t flags, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND (frame, default_open_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->open, loc, flags, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_create_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                       int32_t flags, mode_t mode, mode_t umask, fd_t *fd,
-                       dict_t *xdata)
-{
-        STACK_WIND (frame, default_create_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->create, loc, flags, mode, umask,
-                    fd, xdata);
-        return 0;
-}
-
-int32_t
-default_link_resume (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
-                     loc_t *newloc, dict_t *xdata)
-{
-        STACK_WIND (frame, default_link_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->link, oldloc, newloc, xdata);
-        return 0;
-}
-
-int32_t
-default_rename_resume (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
-                       loc_t *newloc, dict_t *xdata)
-{
-        STACK_WIND (frame, default_rename_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->rename, oldloc, newloc, xdata);
-        return 0;
-}
-
-
-int
-default_symlink_resume (call_frame_t *frame, xlator_t *this,
-                        const char *linkpath, loc_t *loc, mode_t umask,
-                        dict_t *xdata)
-{
-        STACK_WIND (frame, default_symlink_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->symlink, linkpath, loc, umask,
-                    xdata);
-        return 0;
-}
-
-int32_t
-default_rmdir_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                      int flags, dict_t *xdata)
-{
-        STACK_WIND (frame, default_rmdir_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->rmdir, loc, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_unlink_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                       int xflag, dict_t *xdata)
-{
-        STACK_WIND (frame, default_unlink_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->unlink, loc, xflag, xdata);
-        return 0;
-}
-
-int
-default_mkdir_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                      mode_t mode, mode_t umask, dict_t *xdata)
-{
-        STACK_WIND (frame, default_mkdir_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->mkdir, loc, mode, umask, xdata);
-        return 0;
-}
-
-
-int
-default_mknod_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                      mode_t mode, dev_t rdev, mode_t umask, dict_t *xdata)
-{
-        STACK_WIND (frame, default_mknod_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->mknod, loc, mode, rdev, umask,
-                    xdata);
-        return 0;
-}
-
-int32_t
-default_readlink_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                         size_t size, dict_t *xdata)
-{
-        STACK_WIND (frame, default_readlink_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->readlink, loc, size, xdata);
-        return 0;
-}
-
-
-int32_t
-default_access_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                       int32_t mask, dict_t *xdata)
-{
-        STACK_WIND (frame, default_access_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->access, loc, mask, xdata);
-        return 0;
-}
-
-int32_t
-default_ftruncate_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                          off_t offset, dict_t *xdata)
-{
-        STACK_WIND (frame, default_ftruncate_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->ftruncate, fd, offset, xdata);
-        return 0;
-}
-
-int32_t
-default_getxattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                         const char *name, dict_t *xdata)
-{
-        STACK_WIND (frame, default_getxattr_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->getxattr, loc, name, xdata);
-        return 0;
-}
-
-
-int32_t
-default_xattrop_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                        gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata)
-{
-        STACK_WIND (frame, default_xattrop_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->xattrop, loc, flags, dict, xdata);
-        return 0;
-}
-
-int32_t
-default_fxattrop_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                         gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fxattrop_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fxattrop, fd, flags, dict, xdata);
-        return 0;
-}
-
-int32_t
-default_removexattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                            const char *name, dict_t *xdata)
-{
-        STACK_WIND (frame, default_removexattr_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->removexattr, loc, name, xdata);
-        return 0;
-}
-
-int32_t
-default_fremovexattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                             const char *name, dict_t *xdata)
-{
-        STACK_WIND (frame, default_fremovexattr_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fremovexattr, fd, name, xdata);
-        return 0;
-}
-
-int32_t
-default_lk_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                   int32_t cmd, struct gf_flock *lock, dict_t *xdata)
-{
-        STACK_WIND (frame, default_lk_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->lk, fd, cmd, lock, xdata);
-        return 0;
-}
-
-
-int32_t
-default_inodelk_resume (call_frame_t *frame, xlator_t *this,
-                        const char *volume, loc_t *loc, int32_t cmd,
-                        struct gf_flock *lock,
-                        dict_t *xdata)
-{
-        STACK_WIND (frame, default_inodelk_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->inodelk,
-                    volume, loc, cmd, lock, xdata);
-        return 0;
-}
-
-int32_t
-default_finodelk_resume (call_frame_t *frame, xlator_t *this,
-                         const char *volume, fd_t *fd, int32_t cmd,
-                         struct gf_flock *lock,
-                         dict_t *xdata)
-{
-        STACK_WIND (frame, default_finodelk_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->finodelk,
-                    volume, fd, cmd, lock, xdata);
-        return 0;
-}
-
-int32_t
-default_entrylk_resume (call_frame_t *frame, xlator_t *this,
-                        const char *volume, loc_t *loc, const char *basename,
-                        entrylk_cmd cmd, entrylk_type type,
-                        dict_t *xdata)
-{
-        STACK_WIND (frame, default_entrylk_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->entrylk,
-                    volume, loc, basename, cmd, type, xdata);
-        return 0;
-}
-
-int32_t
-default_fentrylk_resume (call_frame_t *frame, xlator_t *this,
-                         const char *volume, fd_t *fd, const char *basename,
-                         entrylk_cmd cmd, entrylk_type type,
-                         dict_t *xdata)
-{
-        STACK_WIND (frame, default_fentrylk_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->fentrylk,
-                    volume, fd, basename, cmd, type, xdata);
-        return 0;
-}
-
-int32_t
-default_rchecksum_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                          off_t offset, int32_t len,
-                          dict_t *xdata)
-{
-        STACK_WIND (frame, default_rchecksum_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->rchecksum, fd, offset, len, xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdir_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                        size_t size, off_t off,
-                        dict_t *xdata)
-{
-        STACK_WIND (frame, default_readdir_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->readdir, fd, size, off, xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdirp_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                         size_t size, off_t off, dict_t *xdata)
-{
-        STACK_WIND (frame, default_readdirp_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->readdirp, fd, size, off, xdata);
-        return 0;
-}
-
-int32_t
-default_setattr_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                        struct iatt *stbuf, int32_t valid,
-                        dict_t *xdata)
-{
-        STACK_WIND (frame, default_setattr_cbk, FIRST_CHILD (this),
-                    FIRST_CHILD (this)->fops->setattr, loc, stbuf, valid, xdata);
-        return 0;
-}
-
-int32_t
-default_truncate_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                         off_t offset,
-                         dict_t *xdata)
-{
-        STACK_WIND (frame, default_truncate_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->truncate, loc, offset, xdata);
-        return 0;
-}
-
-int32_t
-default_stat_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                     dict_t *xdata)
-{
-        STACK_WIND (frame, default_stat_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->stat, loc, xdata);
-        return 0;
-}
-
-int32_t
-default_lookup_resume (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                       dict_t *xdata)
-{
-        STACK_WIND (frame, default_lookup_cbk, FIRST_CHILD(this),
-                    FIRST_CHILD(this)->fops->lookup, loc, xdata);
-        return 0;
-}
-
-int32_t
-default_fsetattr_resume (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                         struct iatt *stbuf, int32_t valid,
-                         dict_t *xdata)
-{
-        STACK_WIND (frame, default_fsetattr_cbk, FIRST_CHILD (this),
-                    FIRST_CHILD (this)->fops->fsetattr, fd, stbuf, valid, xdata);
-        return 0;
-}
-
-int32_t
-default_fallocate_resume(call_frame_t *frame, xlator_t *this, fd_t *fd,
-                         int32_t keep_size, off_t offset, size_t len, dict_t *xdata)
-{
-        STACK_WIND(frame, default_fallocate_cbk, FIRST_CHILD(this),
-                   FIRST_CHILD(this)->fops->fallocate, fd, keep_size, offset, len,
-                   xdata);
-        return 0;
-}
-
-int32_t
-default_discard_resume(call_frame_t *frame, xlator_t *this, fd_t *fd,
-                       off_t offset, size_t len, dict_t *xdata)
-{
-        STACK_WIND(frame, default_discard_cbk, FIRST_CHILD(this),
-                   FIRST_CHILD(this)->fops->discard, fd, offset, len,
-                   xdata);
-        return 0;
-}
-
-int32_t
-default_zerofill_resume(call_frame_t *frame, xlator_t *this, fd_t *fd,
-                       off_t offset, off_t len, dict_t *xdata)
-{
-        STACK_WIND(frame, default_zerofill_cbk, FIRST_CHILD(this),
-                   FIRST_CHILD(this)->fops->zerofill, fd, offset, len,
-                   xdata);
-        return 0;
-}
-
-
-int32_t
-default_ipc_resume (call_frame_t *frame, xlator_t *this, int32_t op,
-                    dict_t *xdata)
-{
-        STACK_WIND (frame, default_ipc_cbk,
-                    FIRST_CHILD(this), FIRST_CHILD(this)->fops->ipc,
-                    op, xdata);
-        return 0;
-}
-
-
-/* FOPS */
-
-int32_t
-default_fgetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                   const char *name, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fgetxattr, fd, name, xdata);
-        return 0;
-}
-
-int32_t
-default_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict,
-                   int32_t flags, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *dict,
-                  int32_t flags, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->setxattr, loc, dict, flags,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->statfs, loc, xdata);
-        return 0;
-}
-
-int32_t
-default_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fsyncdir, fd, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->opendir, loc, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fstat, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fsync, fd, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->flush, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_writev (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                struct iovec *vector, int32_t count, off_t off, uint32_t flags,
-                struct iobref *iobref, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->writev, fd, vector, count,
-                         off, flags, iobref, xdata);
-        return 0;
-}
-
-int32_t
-default_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size,
-               off_t offset, uint32_t flags, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->readv, fd, size, offset,
-                         flags, xdata);
-        return 0;
-}
-
-
-int32_t
-default_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
-              fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->open, loc, flags, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_create (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
-                mode_t mode, mode_t umask, fd_t *fd, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->create, loc, flags, mode,
-                         umask, fd, xdata);
-        return 0;
-}
-
-int32_t
-default_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc,
-              dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->link, oldloc, newloc, xdata);
-        return 0;
-}
-
-int32_t
-default_rename (call_frame_t *frame, xlator_t *this, loc_t *oldloc,
-                loc_t *newloc, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->rename, oldloc, newloc,
-                         xdata);
-        return 0;
-}
-
-
-int
-default_symlink (call_frame_t *frame, xlator_t *this, const char *linkpath,
-                 loc_t *loc, mode_t umask, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->symlink, linkpath, loc,
-                         umask, xdata);
-        return 0;
-}
-
-int32_t
-default_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags,
-               dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->rmdir, loc, flags, xdata);
-        return 0;
-}
-
-int32_t
-default_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc, int xflag,
-                dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->unlink, loc, xflag, xdata);
-        return 0;
-}
-
-int
-default_mkdir (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
-               mode_t umask, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->mkdir, loc, mode, umask,
-                         xdata);
-        return 0;
-}
-
-
-int
-default_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
-               dev_t rdev, mode_t umask, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->mknod, loc, mode, rdev,
-                         umask, xdata);
-        return 0;
-}
-
-int32_t
-default_readlink (call_frame_t *frame, xlator_t *this, loc_t *loc, size_t size, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->readlink, loc, size, xdata);
-        return 0;
-}
-
-
-int32_t
-default_access (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t mask, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->access, loc, mask, xdata);
-        return 0;
-}
-
-int32_t
-default_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->ftruncate, fd, offset, xdata);
-        return 0;
-}
-
-int32_t
-default_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                  const char *name, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->getxattr, loc, name, xdata);
-        return 0;
-}
-
-
-int32_t
-default_xattrop (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                 gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->xattrop, loc, flags, dict,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_fxattrop (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                  gf_xattrop_flags_t flags, dict_t *dict, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fxattrop, fd, flags, dict,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_removexattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                     const char *name, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->removexattr, loc, name,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_fremovexattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                      const char *name, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fremovexattr, fd, name,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_lk (call_frame_t *frame, xlator_t *this, fd_t *fd,
-            int32_t cmd, struct gf_flock *lock, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->lk, fd, cmd, lock, xdata);
-        return 0;
-}
-
-
-int32_t
-default_inodelk (call_frame_t *frame, xlator_t *this,
-                 const char *volume, loc_t *loc, int32_t cmd,
-                 struct gf_flock *lock,
-                 dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->inodelk, volume, loc, cmd,
-                         lock, xdata);
-        return 0;
-}
-
-int32_t
-default_finodelk (call_frame_t *frame, xlator_t *this,
-                  const char *volume, fd_t *fd, int32_t cmd, struct gf_flock *lock,
-                  dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->finodelk, volume, fd, cmd,
-                         lock, xdata);
-        return 0;
-}
-
-int32_t
-default_entrylk (call_frame_t *frame, xlator_t *this,
-                 const char *volume, loc_t *loc, const char *basename,
-                 entrylk_cmd cmd, entrylk_type type,
-                 dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->entrylk, volume, loc,
-                         basename, cmd, type, xdata);
-        return 0;
-}
-
-int32_t
-default_fentrylk (call_frame_t *frame, xlator_t *this,
-                  const char *volume, fd_t *fd, const char *basename,
-                  entrylk_cmd cmd, entrylk_type type,
-                  dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->fentrylk, volume, fd,
-                         basename, cmd, type, xdata);
-        return 0;
-}
-
-int32_t
-default_rchecksum (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset,
-                   int32_t len,
-                   dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->rchecksum, fd, offset, len,
-                         xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdir (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                 size_t size, off_t off,
-                 dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->readdir, fd, size, off,
-                         xdata);
-        return 0;
-}
-
-
-int32_t
-default_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                  size_t size, off_t off, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->readdirp, fd, size, off,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                 struct iatt *stbuf, int32_t valid,
-                 dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD (this),
-                         FIRST_CHILD (this)->fops->setattr, loc, stbuf, valid,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset,
-                  dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->truncate, loc, offset, xdata);
-        return 0;
-}
-
-int32_t
-default_stat (call_frame_t *frame, xlator_t *this, loc_t *loc,
-              dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->stat, loc, xdata);
-        return 0;
-}
-
-int32_t
-default_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc,
-                dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->lookup, loc, xdata);
-        return 0;
-}
-
-int32_t
-default_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd,
-                  struct iatt *stbuf, int32_t valid,
-                  dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD (this),
-                         FIRST_CHILD (this)->fops->fsetattr, fd, stbuf, valid,
-                         xdata);
-        return 0;
-}
-
-int32_t
-default_fallocate(call_frame_t *frame, xlator_t *this, fd_t *fd,
-                  int32_t keep_size, off_t offset, size_t len, dict_t *xdata)
-{
-        STACK_WIND_TAIL(frame, FIRST_CHILD(this),
-                        FIRST_CHILD(this)->fops->fallocate, fd, keep_size, offset,
-                        len, xdata);
-        return 0;
-}
-
-int32_t
-default_discard(call_frame_t *frame, xlator_t *this, fd_t *fd,
-                off_t offset, size_t len, dict_t *xdata)
-{
-        STACK_WIND_TAIL(frame, FIRST_CHILD(this),
-                        FIRST_CHILD(this)->fops->discard, fd, offset, len,
-                        xdata);
-        return 0;
-}
-
-int32_t
-default_zerofill(call_frame_t *frame, xlator_t *this, fd_t *fd,
-                off_t offset, off_t len, dict_t *xdata)
-{
-        STACK_WIND_TAIL(frame, FIRST_CHILD(this),
-                        FIRST_CHILD(this)->fops->zerofill, fd, offset, len,
-                        xdata);
-        return 0;
-}
-
-
-int32_t
-default_ipc (call_frame_t *frame, xlator_t *this, int32_t op, dict_t *xdata)
-{
-        STACK_WIND_TAIL (frame,
-                         FIRST_CHILD(this), FIRST_CHILD(this)->fops->ipc,
-                         op, xdata);
-        return 0;
-}
-
-
-int32_t
-default_forget (xlator_t *this, inode_t *inode)
-{
-        gf_msg_callingfn (this->name, GF_LOG_WARNING, 0,
-                          LG_MSG_XLATOR_DOES_NOT_IMPLEMENT, "xlator does not "
-                          "implement forget_cbk");
-        return 0;
-}
-
-
-int32_t
-default_releasedir (xlator_t *this, fd_t *fd)
-{
-        gf_msg_callingfn (this->name, GF_LOG_WARNING, 0,
-                          LG_MSG_XLATOR_DOES_NOT_IMPLEMENT, "xlator does not "
-                          "implement releasedir_cbk");
-        return 0;
-}
-
-int32_t
-default_release (xlator_t *this, fd_t *fd)
-{
-        gf_msg_callingfn (this->name, GF_LOG_WARNING, 0,
-                          LG_MSG_XLATOR_DOES_NOT_IMPLEMENT, "xlator does not "
-                          "implement release_cbk");
-        return 0;
-}
-
-/* End of FOP/_CBK/_RESUME section */
-
-
-/* Management operations */
-
-int32_t
-default_getspec (call_frame_t *frame, xlator_t *this, const char *key,
-                 int32_t flags)
-{
-        STACK_WIND_TAIL (frame, FIRST_CHILD(this),
-                         FIRST_CHILD(this)->fops->getspec, key, flags);
-        return 0;
-}
-
-
-struct xlator_fops _default_fops = {
-        .create = default_create,
-        .open = default_open,
-        .stat = default_stat,
-        .readlink = default_readlink,
-        .mknod = default_mknod,
-        .mkdir = default_mkdir,
-        .unlink = default_unlink,
-        .rmdir = default_rmdir,
-        .symlink = default_symlink,
-        .rename = default_rename,
-        .link = default_link,
-        .truncate = default_truncate,
-        .readv = default_readv,
-        .writev = default_writev,
-        .statfs = default_statfs,
-        .flush = default_flush,
-        .fsync = default_fsync,
-        .setxattr = default_setxattr,
-        .getxattr = default_getxattr,
-        .fsetxattr = default_fsetxattr,
-        .fgetxattr = default_fgetxattr,
-        .removexattr = default_removexattr,
-        .fremovexattr = default_fremovexattr,
-        .opendir = default_opendir,
-        .readdir = default_readdir,
-        .readdirp = default_readdirp,
-        .fsyncdir = default_fsyncdir,
-        .access = default_access,
-        .ftruncate = default_ftruncate,
-        .fstat = default_fstat,
-        .lk = default_lk,
-        .inodelk = default_inodelk,
-        .finodelk = default_finodelk,
-        .entrylk = default_entrylk,
-        .fentrylk = default_fentrylk,
-        .lookup = default_lookup,
-        .rchecksum = default_rchecksum,
-        .xattrop = default_xattrop,
-        .fxattrop = default_fxattrop,
-        .setattr = default_setattr,
-        .fsetattr = default_fsetattr,
-	.fallocate = default_fallocate,
-	.discard = default_discard,
-        .zerofill = default_zerofill,
-
-        .getspec = default_getspec,
-};
-struct xlator_fops *default_fops = &_default_fops;
-
-/* notify */
-int
-default_notify (xlator_t *this, int32_t event, void *data, ...)
-{
-        switch (event)
-        {
-        case GF_EVENT_PARENT_UP:
-        case GF_EVENT_PARENT_DOWN:
-        {
-                xlator_list_t *list = this->children;
-
-                while (list) {
-                        xlator_notify (list->xlator, event, this);
-                        list = list->next;
-                }
-        }
-        break;
-        case GF_EVENT_CHILD_CONNECTING:
-        case GF_EVENT_CHILD_MODIFIED:
-        case GF_EVENT_CHILD_DOWN:
-        case GF_EVENT_CHILD_UP:
-        case GF_EVENT_AUTH_FAILED:
-        {
-                xlator_list_t *parent = this->parents;
-                /* Handle case of CHILD_* & AUTH_FAILED event specially, send it to fuse */
-                if (!parent && this->ctx && this->ctx->master)
-                        xlator_notify (this->ctx->master, event, this->graph, NULL);
-
-                while (parent) {
-                        if (parent->xlator->init_succeeded)
-                                xlator_notify (parent->xlator, event,
-                                               this, NULL);
-                        parent = parent->next;
-                }
-        }
-        break;
-        case GF_EVENT_UPCALL:
-        {
-                xlator_list_t *parent = this->parents;
-
-                if (!parent && this->ctx && this->ctx->master)
-                        xlator_notify (this->ctx->master, event, data, NULL);
-
-                while (parent) {
-                        if (parent->xlator->init_succeeded)
-                                xlator_notify (parent->xlator, event,
-                                               data, NULL);
-                        parent = parent->next;
-                }
-        }
-        break;
-        default:
-        {
-                xlator_list_t *parent = this->parents;
-                while (parent) {
-                        if (parent->xlator->init_succeeded)
-                                xlator_notify (parent->xlator, event,
-                                               this, NULL);
-                        parent = parent->next;
-                }
-        }
-        }
-
-        return 0;
-}
-
-int32_t
-default_mem_acct_init (xlator_t *this)
-{
-        int     ret = -1;
-
-        ret = xlator_mem_acct_init (this, gf_common_mt_end);
-
-        return ret;
-}
-
-/*ARGS_ STORE section*/
-int
-args_lookup_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     inode_t *inode, struct iatt *buf,
-                     dict_t *xdata, struct iatt *postparent)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (inode)
-                args->inode = inode_ref (inode);
-        if (buf)
-                args->stat = *buf;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_stat_cbk_store (default_args_cbk_t *args,
-                   int32_t op_ret, int32_t op_errno,
-                   struct iatt *buf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret == 0)
-                args->stat = *buf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fstat_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno,
-                    struct iatt *buf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (buf)
-                args->stat = *buf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_truncate_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                       struct iatt *postbuf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (prebuf)
-                args->prestat = *prebuf;
-        if (postbuf)
-                args->poststat = *postbuf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_ftruncate_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                        struct iatt *postbuf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (prebuf)
-                args->prestat = *prebuf;
-        if (postbuf)
-                args->poststat = *postbuf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_access_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_readlink_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       const char *path, struct iatt *stbuf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (path)
-                args->buf = gf_strdup (path);
-        if (stbuf)
-                args->stat = *stbuf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_mknod_cbk_store (default_args_cbk_t *args, int op_ret,
-                    int32_t op_errno, inode_t *inode, struct iatt *buf,
-                    struct iatt *preparent, struct iatt *postparent,
-                    dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (inode)
-                args->inode = inode_ref (inode);
-        if (buf)
-                args->stat = *buf;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_mkdir_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno, inode_t *inode,
-                    struct iatt *buf, struct iatt *preparent,
-                    struct iatt *postparent, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (inode)
-                args->inode = inode_ref (inode);
-        if (buf)
-                args->stat = *buf;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_unlink_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *preparent, struct iatt *postparent,
-                     dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_rmdir_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno,
-                    struct iatt *preparent, struct iatt *postparent,
-                    dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_symlink_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      inode_t *inode, struct iatt *buf,
-                      struct iatt *preparent, struct iatt *postparent,
-                      dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (inode)
-                args->inode = inode_ref (inode);
-        if (buf)
-                args->stat = *buf;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_rename_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                     struct iatt *preoldparent, struct iatt *postoldparent,
-                     struct iatt *prenewparent, struct iatt *postnewparent,
-                     dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (buf)
-                args->stat = *buf;
-        if (preoldparent)
-                args->preparent = *preoldparent;
-        if (postoldparent)
-                args->postparent = *postoldparent;
-        if (prenewparent)
-                args->preparent2 = *prenewparent;
-        if (postnewparent)
-                args->postparent2 = *postnewparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_link_cbk_store (default_args_cbk_t *args,
-                   int32_t op_ret, int32_t op_errno,
-                   inode_t *inode, struct iatt *buf,
-                   struct iatt *preparent, struct iatt *postparent,
-                   dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (inode)
-                args->inode = inode_ref (inode);
-        if (buf)
-                args->stat = *buf;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_create_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     fd_t *fd, inode_t *inode, struct iatt *buf,
-                     struct iatt *preparent, struct iatt *postparent,
-                     dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (fd)
-                args->fd = fd_ref (fd);
-        if (inode)
-                args->inode = inode_ref (inode);
-        if (buf)
-                args->stat = *buf;
-        if (preparent)
-                args->preparent = *preparent;
-        if (postparent)
-                args->postparent = *postparent;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_open_cbk_store (default_args_cbk_t *args,
-                   int32_t op_ret, int32_t op_errno,
-                   fd_t *fd, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (fd)
-                args->fd = fd_ref (fd);
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_readv_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno, struct iovec *vector,
-                    int32_t count, struct iatt *stbuf,
-                    struct iobref *iobref, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret >= 0) {
-                args->vector = iov_dup (vector, count);
-                args->count = count;
-                args->stat = *stbuf;
-                args->iobref = iobref_ref (iobref);
-        }
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_writev_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret >= 0)
-                args->poststat = *postbuf;
-        if (prebuf)
-                args->prestat = *prebuf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_flush_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_fsync_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno,
-                    struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (prebuf)
-                args->prestat = *prebuf;
-        if (postbuf)
-                args->poststat = *postbuf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_opendir_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      fd_t *fd, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (fd)
-                args->fd = fd_ref (fd);
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fsyncdir_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_statfs_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct statvfs *buf, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret == 0)
-                args->statvfs = *buf;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_setxattr_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret,
-                       int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_getxattr_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       dict_t *dict, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (dict)
-                args->xattr = dict_ref (dict);
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fsetxattr_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fgetxattr_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno,
-                        dict_t *dict, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (dict)
-                args->xattr = dict_ref (dict);
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_removexattr_cbk_store (default_args_cbk_t *args,
-                          int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fremovexattr_cbk_store (default_args_cbk_t *args,
-                           int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_lk_cbk_store (default_args_cbk_t *args,
-                 int32_t op_ret, int32_t op_errno,
-                 struct gf_flock *lock, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret == 0)
-                args->lock = *lock;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_inodelk_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret   = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_finodelk_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret   = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_entrylk_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret   = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fentrylk_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret   = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_readdirp_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       gf_dirent_t *entries, dict_t *xdata)
-{
-        gf_dirent_t *stub_entry = NULL, *entry = NULL;
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret > 0) {
-                list_for_each_entry (entry, &entries->list, list) {
-                        stub_entry = gf_dirent_for_name (entry->d_name);
-                        if (!stub_entry)
-                                goto out;
-                        stub_entry->d_off = entry->d_off;
-                        stub_entry->d_ino = entry->d_ino;
-                        stub_entry->d_stat = entry->d_stat;
-                        stub_entry->d_type = entry->d_type;
-                        if (entry->inode)
-                                stub_entry->inode = inode_ref (entry->inode);
-                        if (entry->dict)
-                                stub_entry->dict = dict_ref (entry->dict);
-                        list_add_tail (&stub_entry->list,
-                                       &args->entries.list);
-                }
-        }
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-out:
-        return 0;
-}
-
-
-int
-args_readdir_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      gf_dirent_t *entries, dict_t *xdata)
-{
-        gf_dirent_t *stub_entry = NULL, *entry = NULL;
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret > 0) {
-                list_for_each_entry (entry, &entries->list, list) {
-                        stub_entry = gf_dirent_for_name (entry->d_name);
-                        if (!stub_entry)
-                                goto out;
-                        stub_entry->d_off = entry->d_off;
-                        stub_entry->d_ino = entry->d_ino;
-                        stub_entry->d_type = entry->d_type;
-                        list_add_tail (&stub_entry->list,
-                                       &args->entries.list);
-                }
-        }
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-out:
-        return 0;
-}
-
-
-int
-args_rchecksum_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno,
-                        uint32_t weak_checksum, uint8_t *strong_checksum,
-                        dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (op_ret >= 0) {
-                args->weak_checksum =
-                        weak_checksum;
-                args->strong_checksum =
-                        memdup (strong_checksum, MD5_DIGEST_LENGTH);
-        }
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_xattrop_cbk_store (default_args_cbk_t *args, int32_t op_ret,
-                        int32_t op_errno, dict_t *xattr, dict_t *xdata)
-{
-        args->op_ret   = op_ret;
-        args->op_errno = op_errno;
-        if (xattr)
-                args->xattr = dict_ref (xattr);
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_fxattrop_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       dict_t *xattr, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xattr)
-                args->xattr = dict_ref (xattr);
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_setattr_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      struct iatt *statpre, struct iatt *statpost,
-                      dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (statpre)
-                args->prestat = *statpre;
-        if (statpost)
-                args->poststat = *statpost;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-
-int
-args_fsetattr_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       struct iatt *statpre, struct iatt *statpost,
-                       dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (statpre)
-                args->prestat = *statpre;
-        if (statpost)
-                args->poststat = *statpost;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_fallocate_cbk_store(default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       struct iatt *statpre, struct iatt *statpost,
-                       dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (statpre)
-                args->prestat = *statpre;
-        if (statpost)
-                args->poststat = *statpost;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_discard_cbk_store(default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *statpre, struct iatt *statpost,
-                     dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (statpre)
-                args->prestat = *statpre;
-        if (statpost)
-                args->poststat = *statpost;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_zerofill_cbk_store(default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *statpre, struct iatt *statpost,
-                     dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (statpre)
-                args->prestat = *statpre;
-        if (statpost)
-                args->poststat = *statpost;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-int
-args_ipc_cbk_store (default_args_cbk_t *args,
-                  int32_t op_ret, int32_t op_errno, dict_t *xdata)
-{
-        args->op_ret = op_ret;
-        args->op_errno = op_errno;
-        if (xdata)
-                args->xdata = dict_ref (xdata);
-
-        return 0;
-}
-
-void
-args_cbk_wipe (default_args_cbk_t *args_cbk)
-{
-        if (!args_cbk)
-                return;
-        if (args_cbk->inode)
-                inode_unref (args_cbk->inode);
-
-        GF_FREE ((char *)args_cbk->buf);
-
-        GF_FREE (args_cbk->vector);
-
-        if (args_cbk->iobref)
-                iobref_unref (args_cbk->iobref);
-
-        if (args_cbk->fd)
-                fd_unref (args_cbk->fd);
-
-        if (args_cbk->xattr)
-                dict_unref (args_cbk->xattr);
-
-        GF_FREE (args_cbk->strong_checksum);
-
-        if (args_cbk->xdata)
-                dict_unref (args_cbk->xdata);
-
-        if (!list_empty (&args_cbk->entries.list))
-                gf_dirent_free (&args_cbk->entries);
-}
-/* end of ARGS_ STORE section*/
diff --git a/libglusterfs/src/defaults.h b/libglusterfs/src/defaults.h
index 68d23974b35..4680cac8112 100644
--- a/libglusterfs/src/defaults.h
+++ b/libglusterfs/src/defaults.h
@@ -1,5 +1,5 @@
 /*
-  Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.com>
+  Copyright (c) 2008-2015 Red Hat, Inc. <http://www.redhat.com>
   This file is part of GlusterFS.
 
   This file is licensed to you under your choice of the GNU Lesser
@@ -1159,255 +1159,4 @@ default_getspec_failure_cbk (call_frame_t *frame, int32_t op_errno);
 
 int32_t
 default_mem_acct_init (xlator_t *this);
-
-int
-args_lookup_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     inode_t *inode, struct iatt *buf,
-                     dict_t *xdata, struct iatt *postparent);
-
-
-int
-args_stat_cbk_store (default_args_cbk_t *args,
-                   int32_t op_ret, int32_t op_errno,
-                   struct iatt *buf, dict_t *xdata);
-
-int
-args_fstat_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno,
-                    struct iatt *buf, dict_t *xdata);
-
-int
-args_truncate_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                       struct iatt *postbuf, dict_t *xdata);
-
-
-int
-args_ftruncate_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
-                        struct iatt *postbuf, dict_t *xdata);
-
-
-int
-args_access_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-
-int
-args_readlink_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       const char *path, struct iatt *stbuf, dict_t *xdata);
-
-int
-args_mknod_cbk_store (default_args_cbk_t *args, int32_t op_ret,
-                    int32_t op_errno, inode_t *inode, struct iatt *buf,
-                    struct iatt *preparent, struct iatt *postparent,
-                    dict_t *xdata);
-
-int
-args_mkdir_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno, inode_t *inode,
-                    struct iatt *buf, struct iatt *preparent,
-                    struct iatt *postparent, dict_t *xdata);
-
-int
-args_unlink_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *preparent, struct iatt *postparent,
-                     dict_t *xdata);
-
-int
-args_rmdir_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno,
-                    struct iatt *preparent, struct iatt *postparent,
-                    dict_t *xdata);
-
-int
-args_symlink_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      inode_t *inode, struct iatt *buf,
-                      struct iatt *preparent, struct iatt *postparent,
-                      dict_t *xdata);
-
-
-int
-args_rename_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno, struct iatt *buf,
-                     struct iatt *preoldparent, struct iatt *postoldparent,
-                     struct iatt *prenewparent, struct iatt *postnewparent,
-                     dict_t *xdata);
-
-int
-args_link_cbk_store (default_args_cbk_t *args,
-                   int32_t op_ret, int32_t op_errno,
-                   inode_t *inode, struct iatt *buf,
-                   struct iatt *preparent, struct iatt *postparent,
-                   dict_t *xdata);
-
-int
-args_create_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     fd_t *fd, inode_t *inode, struct iatt *buf,
-                     struct iatt *preparent, struct iatt *postparent,
-                     dict_t *xdata);
-
-int
-args_open_cbk_store (default_args_cbk_t *args,
-                   int32_t op_ret, int32_t op_errno,
-                   fd_t *fd, dict_t *xdata);
-
-int
-args_readv_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno, struct iovec *vector,
-                    int32_t count, struct iatt *stbuf,
-                    struct iobref *iobref, dict_t *xdata);
-
-int
-args_writev_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata);
-
-
-int
-args_flush_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-
-int
-args_fsync_cbk_store (default_args_cbk_t *args,
-                    int32_t op_ret, int32_t op_errno,
-                    struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata);
-
-int
-args_opendir_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      fd_t *fd, dict_t *xdata);
-
-int
-args_fsyncdir_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_statfs_cbk_store (default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct statvfs *buf, dict_t *xdata);
-
-int
-args_setxattr_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret,
-                       int32_t op_errno, dict_t *xdata);
-
-int
-args_getxattr_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       dict_t *dict, dict_t *xdata);
-
-int
-args_fsetxattr_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_fgetxattr_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno,
-                        dict_t *dict, dict_t *xdata);
-
-int
-args_removexattr_cbk_store (default_args_cbk_t *args,
-                          int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_fremovexattr_cbk_store (default_args_cbk_t *args,
-                           int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_lk_cbk_store (default_args_cbk_t *args,
-                 int32_t op_ret, int32_t op_errno,
-                 struct gf_flock *lock, dict_t *xdata);
-
-
-int
-args_inodelk_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_finodelk_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_entrylk_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-int
-args_fentrylk_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-
-int
-args_readdirp_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       gf_dirent_t *entries, dict_t *xdata);
-
-
-int
-args_readdir_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      gf_dirent_t *entries, dict_t *xdata);
-
-
-int
-args_rchecksum_cbk_store (default_args_cbk_t *args,
-                        int32_t op_ret, int32_t op_errno,
-                        uint32_t weak_checksum, uint8_t *strong_checksum,
-                        dict_t *xdata);
-
-
-int
-args_xattrop_cbk_store (default_args_cbk_t *args, int32_t op_ret,
-                        int32_t op_errno, dict_t *xattr, dict_t *xdata);
-
-
-int
-args_fxattrop_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       dict_t *xattr, dict_t *xdata);
-
-int
-args_setattr_cbk_store (default_args_cbk_t *args,
-                      int32_t op_ret, int32_t op_errno,
-                      struct iatt *statpre, struct iatt *statpost,
-                      dict_t *xdata);
-
-
-int
-args_fsetattr_cbk_store (default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       struct iatt *statpre, struct iatt *statpost,
-                       dict_t *xdata);
-
-int
-args_fallocate_cbk_store(default_args_cbk_t *args,
-                       int32_t op_ret, int32_t op_errno,
-                       struct iatt *statpre, struct iatt *statpost,
-                       dict_t *xdata);
-
-int
-args_discard_cbk_store(default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *statpre, struct iatt *statpost,
-                     dict_t *xdata);
-
-int
-args_zerofill_cbk_store(default_args_cbk_t *args,
-                     int32_t op_ret, int32_t op_errno,
-                     struct iatt *statpre, struct iatt *statpost,
-                     dict_t *xdata);
-
-int
-args_ipc_cbk_store (default_args_cbk_t *args,
-                  int32_t op_ret, int32_t op_errno, dict_t *xdata);
-
-void
-args_cbk_wipe (default_args_cbk_t *args_cbk);
-/* end of ARGS_ STORE section*/
 #endif /* _DEFAULTS_H */
diff --git a/libglusterfs/src/gen-defaults.py b/libglusterfs/src/gen-defaults.py
new file mode 100644
index 00000000000..f8e76d02ef4
--- /dev/null
+++ b/libglusterfs/src/gen-defaults.py
@@ -0,0 +1,80 @@
+#!/usr/bin/python
+
+import sys
+from generator import ops, fop_subs, cbk_subs, generate
+
+FAILURE_CBK_TEMPLATE = """
+int32_t
+default_@NAME@_failure_cbk (call_frame_t *frame, int32_t op_errno)
+{
+	STACK_UNWIND_STRICT (@NAME@, frame, -1, op_errno, @ERROR_ARGS@);
+	return 0;
+}
+"""
+
+CBK_RESUME_TEMPLATE = """
+int32_t
+default_@NAME@_cbk_resume (call_frame_t *frame, void *cookie, xlator_t *this,
+			   int32_t op_ret, int32_t op_errno, @LONG_ARGS@)
+{
+	STACK_UNWIND_STRICT (@NAME@, frame, op_ret, op_errno,
+			     @SHORT_ARGS@);
+	return 0;
+}
+"""
+
+CBK_TEMPLATE = """
+int32_t
+default_@NAME@_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+		    int32_t op_ret, int32_t op_errno, @LONG_ARGS@)
+{
+	STACK_UNWIND_STRICT (@NAME@, frame, op_ret, op_errno,
+			     @SHORT_ARGS@);
+	return 0;
+}
+"""
+
+RESUME_TEMPLATE = """
+int32_t
+default_@NAME@_resume (call_frame_t *frame, xlator_t *this, @LONG_ARGS@)
+{
+	STACK_WIND (frame, default_@NAME@_cbk,
+		    FIRST_CHILD(this), FIRST_CHILD(this)->fops->@NAME@,
+		    @SHORT_ARGS@);
+	return 0;
+}
+"""
+
+FOP_TEMPLATE = """
+int32_t
+default_@NAME@ (
+	call_frame_t *frame,
+	xlator_t *this,
+	@LONG_ARGS@)
+{
+	STACK_WIND_TAIL (frame,
+			 FIRST_CHILD(this), FIRST_CHILD(this)->fops->@NAME@,
+			 @SHORT_ARGS@);
+	return 0;
+}
+"""
+
+def gen_defaults ():
+	for name in ops.iterkeys():
+		print generate(FAILURE_CBK_TEMPLATE,name,cbk_subs)
+	for name in ops.iterkeys():
+		print generate(CBK_RESUME_TEMPLATE,name,cbk_subs)
+	for name in ops.iterkeys():
+		print generate(CBK_TEMPLATE,name,cbk_subs)
+	for name in ops.iterkeys():
+		print generate(RESUME_TEMPLATE,name,fop_subs)
+	for name in ops.iterkeys():
+		print generate(FOP_TEMPLATE,name,fop_subs)
+
+for l in open(sys.argv[1],'r').readlines():
+	if l.find('#pragma generate') != -1:
+		print "/* BEGIN GENERATED CODE - DO NOT MODIFY */"
+		gen_defaults()
+		print "/* END GENERATED CODE */"
+	else:
+		print l[:-1]
diff --git a/libglusterfs/src/generator.py b/libglusterfs/src/generator.py
new file mode 100644
index 00000000000..436c314578a
--- /dev/null
+++ b/libglusterfs/src/generator.py
@@ -0,0 +1,476 @@
+#!/usr/bin/python
+
+import string
+
+ops = {}
+
+ops['fgetxattr'] = (
+	('fop-arg', 'fd',			'fd_t *'),
+	('fop-arg',	'name',			'const char *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'dict',			'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fsetxattr'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'dict',			'dict_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['setxattr'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'dict',			'dict_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['statfs'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'buf',			'struct statvfs *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fsyncdir'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['opendir'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'fd',			'fd_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fstat'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fsync'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'prebuf',		'struct iatt *'),
+	('cbk-arg',	'postbuf',		'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['flush'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['writev'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'vector',		'struct iovec *'),
+	('fop-arg',	'count',		'int32_t'),
+	('fop-arg',	'off',			'off_t'),
+	('fop-arg',	'flags',		'uint32_t'),
+	('fop-arg',	'iobref',		'struct iobref *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'prebuf',		'struct iatt *'),
+	('cbk-arg',	'postbuf',		'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['readv'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'size',			'size_t'),
+	('fop-arg',	'offset',		'off_t'),
+	('fop-arg',	'flags',		'uint32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'vector',		'struct iovec *'),
+	('cbk-arg',	'count',		'int32_t'),
+	('cbk-arg',	'stbuf',		'struct iatt *'),
+	('cbk-arg',	'iobref',		'struct iobref *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['open'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'fd',			'fd_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['create'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'mode',			'mode_t'),
+	('fop-arg',	'umask',		'mode_t'),
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'fd',			'fd_t *'),
+	('cbk-arg',	'inode',		'inode_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['link'] = (
+	('fop-arg',	'oldloc',		'loc_t *'),
+	('fop-arg',	'newloc',		'loc_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'inode',		'inode_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['rename'] = (
+	('fop-arg',	'oldloc',		'loc_t *'),
+	('fop-arg',	'newloc',		'loc_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'preoldparent',	'struct iatt *'),
+	('cbk-arg',	'postoldparent','struct iatt *'),
+	('cbk-arg',	'prenewparent',	'struct iatt *'),
+	('cbk-arg',	'postnewparent','struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['symlink'] = (
+	('fop-arg',	'linkpath',		'const char *'),
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'umask',		'mode_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'inode',		'inode_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['rmdir'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['unlink'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['mkdir'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'mode',			'mode_t'),
+	('fop-arg',	'umask',		'mode_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'inode',		'inode_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['mknod'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'mode',			'mode_t'),
+	('fop-arg',	'rdev',			'dev_t'),
+	('fop-arg',	'umask',		'mode_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'inode',		'inode_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'preparent',	'struct iatt *'),
+	('cbk-arg',	'postparent',	'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['readlink'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'size',			'size_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'path',			'const char *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['access'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'mask',			'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['ftruncate'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'offset',		'off_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'prebuf',		'struct iatt *'),
+	('cbk-arg',	'postbuf',		'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['getxattr'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'name',			'const char *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'dict',			'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['xattrop'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'flags',		'gf_xattrop_flags_t'),
+	('fop-arg',	'dict',			'dict_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'dict',			'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fxattrop'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'flags',		'gf_xattrop_flags_t'),
+	('fop-arg',	'dict',			'dict_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'dict',			'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['removexattr'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'name',			'const char *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fremovexattr'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'name',			'const char *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['lk'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'cmd',			'int32_t'),
+	('fop-arg',	'lock',			'struct gf_flock *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'lock',			'struct gf_flock *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['inodelk'] = (
+	('fop-arg',	'volume',		'const char *'),
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'cmd',			'int32_t'),
+	('fop-arg',	'lock',			'struct gf_flock *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['finodelk'] = (
+	('fop-arg',	'volume',		'const char *'),
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'cmd',			'int32_t'),
+	('fop-arg',	'lock',			'struct gf_flock *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['entrylk'] = (
+	('fop-arg',	'volume',		'const char *'),
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'basename',		'const char *'),
+	('fop-arg',	'cmd',			'entrylk_cmd'),
+	('fop-arg',	'type',			'entrylk_type'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fentrylk'] = (
+	('fop-arg',	'volume',		'const char *'),
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'basename',		'const char *'),
+	('fop-arg',	'cmd',			'entrylk_cmd'),
+	('fop-arg',	'type',			'entrylk_type'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['rchecksum'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'offset',		'off_t'),
+	('fop-arg',	'len',			'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'weak_cksum',	'uint32_t'),
+	('cbk-arg',	'strong_cksum',	'uint8_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['readdir'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'size',			'size_t'),
+	('fop-arg',	'off',			'off_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'entries',		'gf_dirent_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['readdirp'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'size',			'size_t'),
+	('fop-arg',	'off',			'off_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'entries',		'gf_dirent_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['setattr'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'stbuf',		'struct iatt *'),
+	('fop-arg',	'valid',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'statpre',		'struct iatt *'),
+	('cbk-arg',	'statpost',		'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['truncate'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'offset',		'off_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'prebuf',		'struct iatt *'),
+	('cbk-arg',	'postbuf',		'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['stat'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['lookup'] = (
+	('fop-arg',	'loc',			'loc_t *'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'inode',		'inode_t *'),
+	('cbk-arg',	'buf',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+	# We could add xdata everywhere automatically if somebody hadn't put
+	# something after it here.
+	('cbk-arg',	'postparent',	'struct iatt *'),
+)
+
+ops['fsetattr'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'stbuf',		'struct iatt *'),
+	('fop-arg',	'valid',		'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'statpre',		'struct iatt *'),
+	('cbk-arg',	'statpost',		'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['fallocate'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'keep_size',	'int32_t'),
+	('fop-arg',	'offset',		'off_t'),
+	('fop-arg',	'len',			'size_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'pre',			'struct iatt *'),
+	('cbk-arg',	'post',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['discard'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'offset',		'off_t'),
+	('fop-arg',	'len',			'size_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'pre',			'struct iatt *'),
+	('cbk-arg',	'post',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['zerofill'] = (
+	('fop-arg',	'fd',			'fd_t *'),
+	('fop-arg',	'offset',		'off_t'),
+	# As e.g. fallocate/discard (above) "len" should really be a size_t.
+	('fop-arg',	'len',			'off_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'pre',			'struct iatt *'),
+	('cbk-arg',	'post',			'struct iatt *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['ipc'] = (
+	('fop-arg',	'op',			'int32_t'),
+	('fop-arg',	'xdata',		'dict_t *'),
+	('cbk-arg',	'xdata',		'dict_t *'),
+)
+
+ops['getspec'] = (
+	('fop-arg',	'key',			'const char *'),
+	('fop-arg',	'flags',		'int32_t'),
+	('cbk-arg',	'spec_data',	'char *'),
+)
+
+def get_error_arg (type_str):
+	if type_str.find(" *") != -1:
+		return "NULL"
+	return "-1"
+
+def get_subs (names, types):
+	sdict = {}
+	sdict["@SHORT_ARGS@"] = string.join(names,", ")
+	# Convert two separate tuples to one of (name, type) sub-tuples.
+	as_tuples = zip(types,names)
+	# Convert each sub-tuple into a "type name" string.
+	as_strings = map(string.join,as_tuples)
+	# Join all of those into one big string.
+	sdict["@LONG_ARGS@"] = string.join(as_strings,",\n\t")
+	# So much more readable than string.join(map(string.join,zip(...))))
+	sdict["@ERROR_ARGS@"] = string.join(map(get_error_arg,types),", ")
+	return sdict
+
+def generate (tmpl, name, subs):
+	text = tmpl.replace("@NAME@",name)
+	for old, new in subs[name].iteritems():
+		text = text.replace(old,new)
+	# TBD: reindent/reformat the result for maximum readability.
+	return  text
+
+fop_subs = {}
+cbk_subs = {}
+
+for name, args in ops.iteritems():
+
+	# Create the necessary substitution strings for fops.
+	arg_names = [ a[1] for a in args if a[0] == 'fop-arg']
+	arg_types = [ a[2] for a in args if a[0] == 'fop-arg']
+	fop_subs[name] = get_subs(arg_names,arg_types)
+
+	# Same thing for callbacks.
+	arg_names = [ a[1] for a in args if a[0] == 'cbk-arg']
+	arg_types = [ a[2] for a in args if a[0] == 'cbk-arg']
+	cbk_subs[name] = get_subs(arg_names,arg_types)
+
+	# Callers can add other subs to these tables, or even create their
+	# own tables, using these same techniques, and then pass the result
+	# to generate() which would Do The Right Thing with them.