LXR linux/fs/cifs/cifsfs.h

   1/*
   2 *   fs/cifs/cifsfs.h
   3 *
   4 *   Copyright (c) International Business Machines  Corp., 2002, 2007
   5 *   Author(s): Steve French (sfrench@us.ibm.com)
   6 *
   7 *   This library is free software; you can redistribute it and/or modify
   8 *   it under the terms of the GNU Lesser General Public License as published
   9 *   by the Free Software Foundation; either version 2.1 of the License, or
  10 *   (at your option) any later version.
  11 *
  12 *   This library is distributed in the hope that it will be useful,
  13 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15 *   the GNU Lesser General Public License for more details.
  16 *
  17 *   You should have received a copy of the GNU Lesser General Public License
  18 *   along with this library; if not, write to the Free Software
  19 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  20 */
  21
  22#ifndef _CIFSFS_H
  23#define _CIFSFS_H
  24
  25#include <linux/hash.h>
  26
  27#define ROOT_I 2
  28
  29/*
  30 * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down
  31 * so that it will fit. We use hash_64 to convert the value to 31 bits, and
  32 * then add 1, to ensure that we don't end up with a 0 as the value.
  33 */
  34static inline ino_t
  35cifs_uniqueid_to_ino_t(u64 fileid)
  36{
  37        if ((sizeof(ino_t)) < (sizeof(u64)))
  38                return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;
  39
  40        return (ino_t)fileid;
  41
  42}
  43
  44static inline void cifs_set_time(struct dentry *dentry, unsigned long time)
  45{
  46        dentry->d_fsdata = (void *) time;
  47}
  48
  49static inline unsigned long cifs_get_time(struct dentry *dentry)
  50{
  51        return (unsigned long) dentry->d_fsdata;
  52}
  53
  54extern struct file_system_type cifs_fs_type;
  55extern const struct address_space_operations cifs_addr_ops;
  56extern const struct address_space_operations cifs_addr_ops_smallbuf;
  57
  58/* Functions related to super block operations */
  59extern void cifs_sb_active(struct super_block *sb);
  60extern void cifs_sb_deactive(struct super_block *sb);
  61
  62/* Functions related to inodes */
  63extern const struct inode_operations cifs_dir_inode_ops;
  64extern struct inode *cifs_root_iget(struct super_block *);
  65extern int cifs_create(struct inode *, struct dentry *, umode_t,
  66                       bool excl);
  67extern int cifs_atomic_open(struct inode *, struct dentry *,
  68                            struct file *, unsigned, umode_t,
  69                            int *);
  70extern struct dentry *cifs_lookup(struct inode *, struct dentry *,
  71                                  unsigned int);
  72extern int cifs_unlink(struct inode *dir, struct dentry *dentry);
  73extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);
  74extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t);
  75extern int cifs_mkdir(struct inode *, struct dentry *, umode_t);
  76extern int cifs_rmdir(struct inode *, struct dentry *);
  77extern int cifs_rename2(struct inode *, struct dentry *, struct inode *,
  78                        struct dentry *, unsigned int);
  79extern int cifs_revalidate_file_attr(struct file *filp);
  80extern int cifs_revalidate_dentry_attr(struct dentry *);
  81extern int cifs_revalidate_file(struct file *filp);
  82extern int cifs_revalidate_dentry(struct dentry *);
  83extern int cifs_invalidate_mapping(struct inode *inode);
  84extern int cifs_revalidate_mapping(struct inode *inode);
  85extern int cifs_zap_mapping(struct inode *inode);
  86extern int cifs_getattr(const struct path *, struct kstat *, u32, unsigned int);
  87extern int cifs_setattr(struct dentry *, struct iattr *);
  88
  89extern const struct inode_operations cifs_file_inode_ops;
  90extern const struct inode_operations cifs_symlink_inode_ops;
  91extern const struct inode_operations cifs_dfs_referral_inode_operations;
  92
  93
  94/* Functions related to files and directories */
  95extern const struct file_operations cifs_file_ops;
  96extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */
  97extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */
  98extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */
  99extern const struct file_operations cifs_file_direct_nobrl_ops;
 100extern const struct file_operations cifs_file_strict_nobrl_ops;
 101extern int cifs_open(struct inode *inode, struct file *file);
 102extern int cifs_close(struct inode *inode, struct file *file);
 103extern int cifs_closedir(struct inode *inode, struct file *file);
 104extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to);
 105extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);
 106extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from);
 107extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
 108extern int cifs_lock(struct file *, int, struct file_lock *);
 109extern int cifs_fsync(struct file *, loff_t, loff_t, int);
 110extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
 111extern int cifs_flush(struct file *, fl_owner_t id);
 112extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
 113extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
 114extern const struct file_operations cifs_dir_ops;
 115extern int cifs_dir_open(struct inode *inode, struct file *file);
 116extern int cifs_readdir(struct file *file, struct dir_context *ctx);
 117
 118/* Functions related to dir entries */
 119extern const struct dentry_operations cifs_dentry_ops;
 120extern const struct dentry_operations cifs_ci_dentry_ops;
 121
 122#ifdef CONFIG_CIFS_DFS_UPCALL
 123extern struct vfsmount *cifs_dfs_d_automount(struct path *path);
 124#else
 125#define cifs_dfs_d_automount NULL
 126#endif
 127
 128/* Functions related to symlinks */
 129extern const char *cifs_get_link(struct dentry *, struct inode *,
 130                        struct delayed_call *);
 131extern int cifs_symlink(struct inode *inode, struct dentry *direntry,
 132                        const char *symname);
 133
 134#ifdef CONFIG_CIFS_XATTR
 135extern const struct xattr_handler *cifs_xattr_handlers[];
 136extern ssize_t  cifs_listxattr(struct dentry *, char *, size_t);
 137#else
 138# define cifs_xattr_handlers NULL
 139# define cifs_listxattr NULL
 140#endif
 141
 142extern ssize_t cifs_file_copychunk_range(unsigned int xid,
 143                                        struct file *src_file, loff_t off,
 144                                        struct file *dst_file, loff_t destoff,
 145                                        size_t len, unsigned int flags);
 146
 147extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 148#ifdef CONFIG_CIFS_NFSD_EXPORT
 149extern const struct export_operations cifs_export_ops;
 150#endif /* CONFIG_CIFS_NFSD_EXPORT */
 151
 152#define CIFS_VERSION   "2.09"
 153#endif                          /* _CIFSFS_H */
 154