/*
   *   fs/cifs/cifsfs.h
   *

   *   Copyright (c) International Business Machines  Corp., 2002, 2007

   *   Author(s): Steve French (sfrench@us.ibm.com)
   *
   *   This library is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU Lesser General Public License as published
   *   by the Free Software Foundation; either version 2.1 of the License, or
   *   (at your option) any later version.
   *
   *   This library 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 Lesser General Public License for more details.
   *
   *   You should have received a copy of the GNU Lesser General Public License
   *   along with this library; if not, write to the Free Software

   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

   */
  
  #ifndef _CIFSFS_H
  #define _CIFSFS_H

  #include <linux/hash.h>

  #define ROOT_I 2

  /*
   * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down

   * so that it will fit. We use hash_64 to convert the value to 31 bits, and
   * then add 1, to ensure that we don't end up with a 0 as the value.

   */

  static inline ino_t
  cifs_uniqueid_to_ino_t(u64 fileid)
  {

  	if ((sizeof(ino_t)) < (sizeof(u64)))
  		return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;

  	return (ino_t)fileid;

  }

  static inline void cifs_set_time(struct dentry *dentry, unsigned long time)
  {
  	dentry->d_fsdata = (void *) time;
  }
  
  static inline unsigned long cifs_get_time(struct dentry *dentry)
  {
  	return (unsigned long) dentry->d_fsdata;
  }

  extern struct file_system_type cifs_fs_type;

  extern const struct address_space_operations cifs_addr_ops;
  extern const struct address_space_operations cifs_addr_ops_smallbuf;

  /* Functions related to super block operations */
  extern void cifs_sb_active(struct super_block *sb);
  extern void cifs_sb_deactive(struct super_block *sb);

  /* Functions related to inodes */

  extern const struct inode_operations cifs_dir_inode_ops;

  extern struct inode *cifs_root_iget(struct super_block *);

  extern int cifs_create(struct inode *, struct dentry *, umode_t,

  		       bool excl);

  extern int cifs_atomic_open(struct inode *, struct dentry *,

  			    struct file *, unsigned, umode_t,

  			    int *);

  extern struct dentry *cifs_lookup(struct inode *, struct dentry *,

  				  unsigned int);

  extern int cifs_unlink(struct inode *dir, struct dentry *dentry);

  extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);

  extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);

  extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);

  extern int cifs_rmdir(struct inode *, struct dentry *);

  extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
  			struct dentry *, unsigned int);

  extern int cifs_revalidate_file_attr(struct file *filp);
  extern int cifs_revalidate_dentry_attr(struct dentry *);

  extern int cifs_revalidate_file(struct file *filp);

  extern int cifs_revalidate_dentry(struct dentry *);

  extern int cifs_invalidate_mapping(struct inode *inode);

  extern int cifs_revalidate_mapping(struct inode *inode);

  extern int cifs_zap_mapping(struct inode *inode);

  extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
  extern int cifs_setattr(struct dentry *, struct iattr *);

  extern const struct inode_operations cifs_file_inode_ops;
  extern const struct inode_operations cifs_symlink_inode_ops;

  extern const struct inode_operations cifs_dfs_referral_inode_operations;

  /* Functions related to files and directories */

  extern const struct file_operations cifs_file_ops;

  extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */

  extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
  extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
  extern const struct file_operations cifs_file_direct_nobrl_ops;
  extern const struct file_operations cifs_file_strict_nobrl_ops;

  extern int cifs_open(struct inode *inode, struct file *file);
  extern int cifs_close(struct inode *inode, struct file *file);
  extern int cifs_closedir(struct inode *inode, struct file *file);

  extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
  extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);

  extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
  extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);

  extern int cifs_lock(struct file *, int, struct file_lock *);

  extern int cifs_fsync(struct file *, loff_t, loff_t, int);
  extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);

  extern int cifs_flush(struct file *, fl_owner_t id);

  extern int cifs_file_mmap(struct file * , struct vm_area_struct *);

  extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);

  extern const struct file_operations cifs_dir_ops;

  extern int cifs_dir_open(struct inode *inode, struct file *file);

  extern int cifs_readdir(struct file *file, struct dir_context *ctx);

  
  /* Functions related to dir entries */

  extern const struct dentry_operations cifs_dentry_ops;
  extern const struct dentry_operations cifs_ci_dentry_ops;

  #ifdef CONFIG_CIFS_DFS_UPCALL
  extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
  #else
  #define cifs_dfs_d_automount NULL
  #endif

  /* Functions related to symlinks */

  extern const char *cifs_get_link(struct dentry *, struct inode *,
  			struct delayed_call *);

  extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
  			const char *symname);

  
  #ifdef CONFIG_CIFS_XATTR
  extern const struct xattr_handler *cifs_xattr_handlers[];

  extern ssize_t	cifs_listxattr(struct dentry *, char *, size_t);

  #else
  # define cifs_xattr_handlers NULL
  # define cifs_listxattr NULL
  #endif

  extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);

  #ifdef CONFIG_CIFS_NFSD_EXPORT

  extern const struct export_operations cifs_export_ops;

  #endif /* CONFIG_CIFS_NFSD_EXPORT */

  #define CIFS_VERSION   "2.09"

  #endif				/* _CIFSFS_H */