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 */ 34#if BITS_PER_LONG == 64 35static inline ino_t 36cifs_uniqueid_to_ino_t(u64 fileid) 37{ 38 return (ino_t)fileid; 39} 40#else 41static inline ino_t 42cifs_uniqueid_to_ino_t(u64 fileid) 43{ 44 return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1; 45} 46#endif 47 48extern struct file_system_type cifs_fs_type; 49extern const struct address_space_operations cifs_addr_ops; 50extern const struct address_space_operations cifs_addr_ops_smallbuf; 51 52/* Functions related to super block operations */ 53extern void cifs_sb_active(struct super_block *sb); 54extern void cifs_sb_deactive(struct super_block *sb); 55 56/* Functions related to inodes */ 57extern const struct inode_operations cifs_dir_inode_ops; 58extern struct inode *cifs_root_iget(struct super_block *); 59extern int cifs_create(struct inode *, struct dentry *, umode_t, 60 bool excl); 61extern int cifs_atomic_open(struct inode *, struct dentry *, 62 struct file *, unsigned, umode_t, 63 int *); 64extern struct dentry *cifs_lookup(struct inode *, struct dentry *, 65 unsigned int); 66extern int cifs_unlink(struct inode *dir, struct dentry *dentry); 67extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *); 68extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t); 69extern int cifs_mkdir(struct inode *, struct dentry *, umode_t); 70extern int cifs_rmdir(struct inode *, struct dentry *); 71extern int cifs_rename2(struct inode *, struct dentry *, struct inode *, 72 struct dentry *, unsigned int); 73extern int cifs_revalidate_file_attr(struct file *filp); 74extern int cifs_revalidate_dentry_attr(struct dentry *); 75extern int cifs_revalidate_file(struct file *filp); 76extern int cifs_revalidate_dentry(struct dentry *); 77extern int cifs_invalidate_mapping(struct inode *inode); 78extern int cifs_revalidate_mapping(struct inode *inode); 79extern int cifs_zap_mapping(struct inode *inode); 80extern int cifs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 81extern int cifs_setattr(struct dentry *, struct iattr *); 82 83extern const struct inode_operations cifs_file_inode_ops; 84extern const struct inode_operations cifs_symlink_inode_ops; 85extern const struct inode_operations cifs_dfs_referral_inode_operations; 86 87 88/* Functions related to files and directories */ 89extern const struct file_operations cifs_file_ops; 90extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */ 91extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */ 92extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */ 93extern const struct file_operations cifs_file_direct_nobrl_ops; 94extern const struct file_operations cifs_file_strict_nobrl_ops; 95extern int cifs_open(struct inode *inode, struct file *file); 96extern int cifs_close(struct inode *inode, struct file *file); 97extern int cifs_closedir(struct inode *inode, struct file *file); 98extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to); 99extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to); 100extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from); 101extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); 102extern int cifs_lock(struct file *, int, struct file_lock *); 103extern int cifs_fsync(struct file *, loff_t, loff_t, int); 104extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); 105extern int cifs_flush(struct file *, fl_owner_t id); 106extern int cifs_file_mmap(struct file * , struct vm_area_struct *); 107extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *); 108extern const struct file_operations cifs_dir_ops; 109extern int cifs_dir_open(struct inode *inode, struct file *file); 110extern int cifs_readdir(struct file *file, struct dir_context *ctx); 111 112/* Functions related to dir entries */ 113extern const struct dentry_operations cifs_dentry_ops; 114extern const struct dentry_operations cifs_ci_dentry_ops; 115 116#ifdef CONFIG_CIFS_DFS_UPCALL 117extern struct vfsmount *cifs_dfs_d_automount(struct path *path); 118#else 119#define cifs_dfs_d_automount NULL 120#endif 121 122/* Functions related to symlinks */ 123extern void *cifs_follow_link(struct dentry *direntry, struct nameidata *nd); 124extern int cifs_readlink(struct dentry *direntry, char __user *buffer, 125 int buflen); 126extern int cifs_symlink(struct inode *inode, struct dentry *direntry, 127 const char *symname); 128extern int cifs_removexattr(struct dentry *, const char *); 129extern int cifs_setxattr(struct dentry *, const char *, const void *, 130 size_t, int); 131extern ssize_t cifs_getxattr(struct dentry *, const char *, void *, size_t); 132extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); 133extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 134 135#ifdef CONFIG_CIFS_NFSD_EXPORT 136extern const struct export_operations cifs_export_ops; 137#endif /* CONFIG_CIFS_NFSD_EXPORT */ 138 139#define CIFS_VERSION "2.05" 140#endif /* _CIFSFS_H */ 141