/*
   * V9FS VFS extensions.
   *
   *  Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
   *  Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
   *
   *  This program is free software; you can redistribute it and/or modify

   *  it under the terms of the GNU General Public License version 2
   *  as published by the Free Software Foundation.

   *
   *  This program 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, write to:
   *  Free Software Foundation
   *  51 Franklin Street, Fifth Floor
   *  Boston, MA  02111-1301  USA
   *
   */
  
  /* plan9 semantics are that created files are implicitly opened.
   * But linux semantics are that you call create, then open.
   * the plan9 approach is superior as it provides an atomic
   * open.
   * we track the create fid here. When the file is opened, if fidopen is
   * non-zero, we use the fid and can skip some steps.
   * there may be a better way to do this, but I don't know it.
   * one BAD way is to clunk the fid on create, then open it again:
   * you lose the atomicity of file open
   */
  
  /* special case:
   * unlink calls remove, which is an implicit clunk. So we have to track
   * that kind of thing so that we don't try to clunk a dead fid.
   */
  
  extern struct file_system_type v9fs_fs_type;

  extern const struct address_space_operations v9fs_addr_operations;

  extern const struct file_operations v9fs_file_operations;
  extern const struct file_operations v9fs_dir_operations;

  extern struct dentry_operations v9fs_dentry_operations;

  extern struct dentry_operations v9fs_cached_dentry_operations;

  
  struct inode *v9fs_get_inode(struct super_block *sb, int mode);

  ino_t v9fs_qid2ino(struct p9_qid *qid);
  void v9fs_stat2inode(struct p9_stat *, struct inode *, struct super_block *);

  int v9fs_dir_release(struct inode *inode, struct file *filp);
  int v9fs_file_open(struct inode *inode, struct file *file);

  void v9fs_inode2stat(struct inode *inode, struct p9_stat *stat);

  void v9fs_dentry_release(struct dentry *);

  int v9fs_uflags2omode(int uflags, int extended);