Added all files

1 files changed, 1388 insertions, 0 deletions

diff --git a/libglusterfs/src/defaults.c b/libglusterfs/src/defaults.c
new file mode 100644
index 00000000000..575e3d86e40
--- /dev/null
+++ b/libglusterfs/src/defaults.c
@@ -0,0 +1,1388 @@
+/*
+  Copyright (c) 2006, 2007, 2008 Z RESEARCH, Inc. <http://www.zresearch.com>
+  This file is part of GlusterFS.
+
+  GlusterFS is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published
+  by the Free Software Foundation; either version 3 of the License,
+  or (at your option) any later version.
+
+  GlusterFS is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see
+  <http://www.gnu.org/licenses/>.
+*/
+
+/* libglusterfs/src/defaults.c:
+   This file contains functions, which are used to fill the 'fops' and 'mops'
+   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.
+
+   All the functions are plain enough to understand.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+
+static 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 stat *buf,
+		    dict_t *dict)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      inode,
+		      buf,
+		      dict);
+	return 0;
+}
+
+int32_t
+default_lookup (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		dict_t *xattr_req)
+{
+	STACK_WIND (frame,
+		    default_lookup_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->lookup,
+		    loc,
+		    xattr_req);
+	return 0;
+}
+
+
+int32_t
+default_forget (xlator_t *this,
+		inode_t *inode)
+{
+	return 0;
+}
+
+static int32_t
+default_stat_cbk (call_frame_t *frame,
+		  void *cookie,
+		  xlator_t *this,
+		  int32_t op_ret,
+		  int32_t op_errno,
+		  struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_stat (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc)
+{
+	STACK_WIND (frame,
+		    default_stat_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->stat,
+		    loc);
+	return 0;
+}
+
+static int32_t
+default_chmod_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_chmod (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       mode_t mode)
+{
+	STACK_WIND (frame,
+		    default_chmod_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->chmod,
+		    loc,
+		    mode);
+	return 0;
+}
+
+
+static int32_t
+default_fchmod_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_fchmod (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd,
+		mode_t mode)
+{
+	STACK_WIND (frame,
+		    default_fchmod_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fchmod,
+		    fd,
+		    mode);
+	return 0;
+}
+
+static int32_t
+default_chown_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_chown (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       uid_t uid,
+	       gid_t gid)
+{
+	STACK_WIND (frame,
+		    default_chown_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->chown,
+		    loc,
+		    uid,
+		    gid);
+	return 0;
+}
+
+static int32_t
+default_fchown_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_fchown (call_frame_t *frame,
+		xlator_t *this,
+		fd_t *fd,
+		uid_t uid,
+		gid_t gid)
+{
+	STACK_WIND (frame,
+		    default_fchown_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fchown,
+		    fd,
+		    uid,
+		    gid);
+	return 0;
+}
+
+static int32_t
+default_truncate_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno,
+		      struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_truncate (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  off_t offset)
+{
+	STACK_WIND (frame,
+		    default_truncate_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->truncate,
+		    loc,
+		    offset);
+	return 0;
+}
+
+static int32_t
+default_ftruncate_cbk (call_frame_t *frame,
+		       void *cookie,
+		       xlator_t *this,
+		       int32_t op_ret,
+		       int32_t op_errno,
+		       struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_ftruncate (call_frame_t *frame,
+		   xlator_t *this,
+		   fd_t *fd,
+		   off_t offset)
+{
+	STACK_WIND (frame,
+		    default_ftruncate_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->ftruncate,
+		    fd,
+		    offset);
+	return 0;
+}
+
+int32_t
+default_utimens_cbk (call_frame_t *frame,
+		     void *cookie,
+		     xlator_t *this,
+		     int32_t op_ret,
+		     int32_t op_errno,
+		     struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+
+int32_t
+default_utimens (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc,
+		 struct timespec tv[2])
+{
+	STACK_WIND (frame,
+		    default_utimens_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->utimens,
+		    loc,
+		    tv);
+	return 0;
+}
+
+static int32_t
+default_access_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_access (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		int32_t mask)
+{
+	STACK_WIND (frame,
+		    default_access_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->access,
+		    loc,
+		    mask);
+	return 0;
+}
+
+
+static 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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      path);
+	return 0;
+}
+
+int32_t
+default_readlink (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  size_t size)
+{
+	STACK_WIND (frame,
+		    default_readlink_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->readlink,
+		    loc,
+		    size);
+	return 0;
+}
+
+
+static 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 stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      inode,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_mknod (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       mode_t mode,
+	       dev_t rdev)
+{
+	STACK_WIND (frame,
+		    default_mknod_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->mknod,
+		    loc, mode, rdev);
+	return 0;
+}
+
+static 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 stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      inode,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_mkdir (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc,
+	       mode_t mode)
+{
+	STACK_WIND (frame,
+		    default_mkdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->mkdir,
+		    loc, mode);
+	return 0;
+}
+
+static int32_t
+default_unlink_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno)
+{
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t
+default_unlink (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc)
+{
+	STACK_WIND (frame,
+		    default_unlink_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->unlink,
+		    loc);
+	return 0;
+}
+
+static int32_t
+default_rmdir_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_rmdir (call_frame_t *frame,
+	       xlator_t *this,
+	       loc_t *loc)
+{
+	STACK_WIND (frame,
+		    default_rmdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->rmdir,
+		    loc);
+	return 0;
+}
+
+
+static 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 stat *buf)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, inode,	buf);
+	return 0;
+}
+
+int32_t
+default_symlink (call_frame_t *frame,
+		 xlator_t *this,
+		 const char *linkpath,
+		 loc_t *loc)
+{
+	STACK_WIND (frame,
+		    default_symlink_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->symlink,
+		    linkpath, loc);
+	return 0;
+}
+
+
+static int32_t
+default_rename_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    struct stat *buf)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, buf);
+	return 0;
+}
+
+int32_t
+default_rename (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *oldloc,
+		loc_t *newloc)
+{
+	STACK_WIND (frame,
+		    default_rename_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->rename,
+		    oldloc, newloc);
+	return 0;
+}
+
+
+static 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 stat *buf)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, inode,	buf);
+	return 0;
+}
+
+int32_t
+default_link (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *oldloc,
+	      loc_t *newloc)
+{
+	STACK_WIND (frame,
+		    default_link_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->link,
+		    oldloc, newloc);
+	return 0;
+}
+
+
+static 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 stat *buf)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, fd, inode, buf);
+	return 0;
+}
+
+int32_t
+default_create (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc,
+		int32_t flags,
+		mode_t mode, fd_t *fd)
+{
+	STACK_WIND (frame, default_create_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->create,
+		    loc, flags, mode, fd);
+	return 0;
+}
+
+static 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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      fd);
+	return 0;
+}
+
+int32_t
+default_open (call_frame_t *frame,
+	      xlator_t *this,
+	      loc_t *loc,
+	      int32_t flags, fd_t *fd)
+{
+	STACK_WIND (frame,
+		    default_open_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->open,
+		    loc, flags, fd);
+	return 0;
+}
+
+static 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 stat *stbuf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      vector,
+		      count,
+		      stbuf);
+	return 0;
+}
+
+int32_t
+default_readv (call_frame_t *frame,
+	       xlator_t *this,
+	       fd_t *fd,
+	       size_t size,
+	       off_t offset)
+{
+	STACK_WIND (frame,
+		    default_readv_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->readv,
+		    fd,
+		    size,
+		    offset);
+	return 0;
+}
+
+
+static int32_t
+default_writev_cbk (call_frame_t *frame,
+		    void *cookie,
+		    xlator_t *this,
+		    int32_t op_ret,
+		    int32_t op_errno,
+		    struct stat *stbuf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      stbuf);
+	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)
+{
+	STACK_WIND (frame,
+		    default_writev_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->writev,
+		    fd,
+		    vector,
+		    count,
+		    off);
+	return 0;
+}
+
+static int32_t
+default_flush_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_flush (call_frame_t *frame,
+	       xlator_t *this,
+	       fd_t *fd)
+{
+	STACK_WIND (frame,
+		    default_flush_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->flush,
+		    fd);
+	return 0;
+}
+
+
+static int32_t
+default_fsync_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_fsync (call_frame_t *frame,
+	       xlator_t *this,
+	       fd_t *fd,
+	       int32_t flags)
+{
+	STACK_WIND (frame,
+		    default_fsync_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fsync,
+		    fd,
+		    flags);
+	return 0;
+}
+
+static int32_t
+default_fstat_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   struct stat *buf)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_fstat (call_frame_t *frame,
+	       xlator_t *this,
+	       fd_t *fd)
+{
+	STACK_WIND (frame,
+		    default_fstat_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fstat,
+		    fd);
+	return 0;
+}
+
+static 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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      fd);
+	return 0;
+}
+
+int32_t
+default_opendir (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc, fd_t *fd)
+{
+	STACK_WIND (frame,
+		    default_opendir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->opendir,
+		    loc, fd);
+	return 0;
+}
+
+
+static int32_t
+default_getdents_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno,
+		      dir_entry_t *entries,
+		      int32_t count)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      entries,
+		      count);
+	return 0;
+}
+
+int32_t
+default_getdents (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  size_t size,
+		  off_t offset,
+		  int32_t flag)
+{
+	STACK_WIND (frame,
+		    default_getdents_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->getdents,
+		    fd,
+		    size,
+		    offset,
+		    flag);
+	return 0;
+}
+
+
+static int32_t
+default_setdents_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_setdents (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  int32_t flags,
+		  dir_entry_t *entries,
+		  int32_t count)
+{
+	STACK_WIND (frame,
+		    default_setdents_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->setdents,
+		    fd,
+		    flags,
+		    entries,
+		    count);
+	return 0;
+}
+
+
+static int32_t
+default_fsyncdir_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_fsyncdir (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  int32_t flags)
+{
+	STACK_WIND (frame,
+		    default_fsyncdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fsyncdir,
+		    fd,
+		    flags);
+	return 0;
+}
+
+
+static 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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      buf);
+	return 0;
+}
+
+int32_t
+default_statfs (call_frame_t *frame,
+		xlator_t *this,
+		loc_t *loc)
+{
+	STACK_WIND (frame,
+		    default_statfs_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->statfs,
+		    loc);
+	return 0;
+}
+
+
+static int32_t
+default_setxattr_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_setxattr (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  dict_t *dict,
+		  int32_t flags)
+{
+	STACK_WIND (frame,
+		    default_setxattr_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->setxattr,
+		    loc,
+		    dict,
+		    flags);
+	return 0;
+}
+
+static 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)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      dict);
+	return 0;
+}
+
+int32_t
+default_getxattr (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  const char *name)
+{
+	STACK_WIND (frame,
+		    default_getxattr_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->getxattr,
+		    loc,
+		    name);
+	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)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t
+default_xattrop (call_frame_t *frame,
+		 xlator_t *this,
+		 loc_t *loc,
+		 gf_xattrop_flags_t flags,
+		 dict_t *dict)
+{
+	STACK_WIND (frame,
+		    default_xattrop_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->xattrop,
+		    loc,
+		    flags,
+		    dict);
+	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)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, dict);
+	return 0;
+}
+
+int32_t
+default_fxattrop (call_frame_t *frame,
+		  xlator_t *this,
+		  fd_t *fd,
+		  gf_xattrop_flags_t flags,
+		  dict_t *dict)
+{
+	STACK_WIND (frame,
+		    default_fxattrop_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fxattrop,
+		    fd,
+		    flags,
+		    dict);
+	return 0;
+}
+
+
+static int32_t
+default_removexattr_cbk (call_frame_t *frame,
+			 void *cookie,
+			 xlator_t *this,
+			 int32_t op_ret,
+			 int32_t op_errno)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno);
+	return 0;
+}
+
+int32_t
+default_removexattr (call_frame_t *frame,
+		     xlator_t *this,
+		     loc_t *loc,
+		     const char *name)
+{
+	STACK_WIND (frame,
+		    default_removexattr_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->removexattr,
+		    loc,
+		    name);
+	return 0;
+}
+
+static int32_t
+default_lk_cbk (call_frame_t *frame,
+		void *cookie,
+		xlator_t *this,
+		int32_t op_ret,
+		int32_t op_errno,
+		struct flock *lock)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      lock);
+	return 0;
+}
+
+int32_t
+default_lk (call_frame_t *frame,
+	    xlator_t *this,
+	    fd_t *fd,
+	    int32_t cmd,
+	    struct flock *lock)
+{
+	STACK_WIND (frame,
+		    default_lk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->lk,
+		    fd,
+		    cmd,
+		    lock);
+	return 0;
+}
+
+
+static int32_t
+default_inodelk_cbk (call_frame_t *frame, void *cookie,
+		     xlator_t *this, int32_t op_ret, int32_t op_errno)
+
+{
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+
+int32_t
+default_inodelk (call_frame_t *frame, xlator_t *this,
+		 loc_t *loc, int32_t cmd, struct flock *lock)
+{
+	STACK_WIND (frame,
+		    default_inodelk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->inodelk,
+		    loc, cmd, lock);
+	return 0;
+}
+
+
+static int32_t
+default_finodelk_cbk (call_frame_t *frame, void *cookie,
+		      xlator_t *this, int32_t op_ret, int32_t op_errno)
+
+{
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+
+int32_t
+default_finodelk (call_frame_t *frame, xlator_t *this,
+		  fd_t *fd, int32_t cmd, struct flock *lock)
+{
+	STACK_WIND (frame,
+		    default_finodelk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->finodelk,
+		    fd, cmd, lock);
+	return 0;
+}
+
+
+static int32_t
+default_entrylk_cbk (call_frame_t *frame, void *cookie,
+		     xlator_t *this, int32_t op_ret, int32_t op_errno)
+
+{
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t
+default_entrylk (call_frame_t *frame, xlator_t *this,
+		 loc_t *loc, const char *basename,
+		 entrylk_cmd cmd, entrylk_type type)
+{
+	STACK_WIND (frame, default_entrylk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->entrylk,
+		    loc, basename, cmd, type);
+	return 0;
+}
+
+static int32_t
+default_fentrylk_cbk (call_frame_t *frame, void *cookie,
+		      xlator_t *this, int32_t op_ret, int32_t op_errno)
+
+{
+	STACK_UNWIND (frame, op_ret, op_errno);
+	return 0;
+}
+
+int32_t
+default_fentrylk (call_frame_t *frame, xlator_t *this,
+		  fd_t *fd, const char *basename,
+		  entrylk_cmd cmd, entrylk_type type)
+{
+	STACK_WIND (frame, default_fentrylk_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->fentrylk,
+		    fd, basename, cmd, type);
+	return 0;
+}
+
+
+/* Management operations */
+
+static int32_t
+default_stats_cbk (call_frame_t *frame,
+		   void *cookie,
+		   xlator_t *this,
+		   int32_t op_ret,
+		   int32_t op_errno,
+		   struct xlator_stats *stats)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      stats);
+	return 0;
+}
+
+
+int32_t
+default_stats (call_frame_t *frame,
+	       xlator_t *this,
+	       int32_t flags)
+{
+	STACK_WIND (frame,
+		    default_stats_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->mops->stats,
+		    flags);
+	return 0;
+}
+
+static 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 (frame,
+		      op_ret,
+		      op_errno,
+		      spec_data);
+	return 0;
+}
+
+
+int32_t
+default_getspec (call_frame_t *frame,
+		 xlator_t *this,
+		 const char *key,
+		 int32_t flags)
+{
+	STACK_WIND (frame,
+		    default_getspec_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->mops->getspec,
+		    key, flags);
+	return 0;
+}
+
+
+static int32_t
+default_checksum_cbk (call_frame_t *frame,
+		      void *cookie,
+		      xlator_t *this,
+		      int32_t op_ret,
+		      int32_t op_errno,
+		      uint8_t *file_checksum,
+		      uint8_t *dir_checksum)
+{
+	STACK_UNWIND (frame,
+		      op_ret,
+		      op_errno,
+		      file_checksum,
+		      dir_checksum);
+	return 0;
+}
+
+
+int32_t
+default_checksum (call_frame_t *frame,
+		  xlator_t *this,
+		  loc_t *loc,
+		  int32_t flag)
+{
+	STACK_WIND (frame,
+		    default_checksum_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->checksum,
+		    loc,
+		    flag);
+	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)
+{
+	STACK_UNWIND (frame, op_ret, op_errno, entries);
+	return 0;
+}
+
+
+int32_t
+default_readdir (call_frame_t *frame,
+		 xlator_t *this,
+		 fd_t *fd,
+		 size_t size,
+		 off_t off)
+{
+	STACK_WIND (frame,
+		    default_readdir_cbk,
+		    FIRST_CHILD(this),
+		    FIRST_CHILD(this)->fops->readdir,
+		    fd, size, off);
+	return 0;
+}
+
+/* notify */
+int32_t
+default_notify (xlator_t *this,
+		int32_t event,
+		void *data,
+		...)
+{
+	switch (event)
+	{
+	case GF_EVENT_PARENT_UP:
+	{
+		xlator_list_t *list = this->children;
+
+		while (list)
+		{
+			list->xlator->notify (list->xlator, event, this);
+			list = list->next;
+		}
+	}
+	break;
+	case GF_EVENT_CHILD_DOWN:
+	case GF_EVENT_CHILD_UP:
+	default:
+	{
+		xlator_list_t *parent = this->parents;
+		while (parent) {
+			parent->xlator->notify (parent->xlator, event, this, NULL);
+			parent = parent->next;
+		}
+	}
+	}
+
+	return 0;
+}
+
+int32_t
+default_releasedir (xlator_t *this,
+		    fd_t *fd)
+{
+	return 0;
+}
+
+int32_t
+default_release (xlator_t *this,
+		 fd_t *fd)
+{
+	return 0;
+}
+