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, smb3_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); 69extern struct dentry *cifs_lookup(struct inode *, struct dentry *, 70 unsigned int); 71extern int cifs_unlink(struct inode *dir, struct dentry *dentry); 72extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *); 73extern int cifs_mknod(struct inode *, struct dentry *, umode_t, dev_t); 74extern int cifs_mkdir(struct inode *, struct dentry *, umode_t); 75extern int cifs_rmdir(struct inode *, struct dentry *); 76extern int cifs_rename2(struct inode *, struct dentry *, struct inode *, 77 struct dentry *, unsigned int); 78extern int cifs_revalidate_file_attr(struct file *filp); 79extern int cifs_revalidate_dentry_attr(struct dentry *); 80extern int cifs_revalidate_file(struct file *filp); 81extern int cifs_revalidate_dentry(struct dentry *); 82extern int cifs_invalidate_mapping(struct inode *inode); 83extern int cifs_revalidate_mapping(struct inode *inode); 84extern int cifs_zap_mapping(struct inode *inode); 85extern int cifs_getattr(const struct path *, struct kstat *, u32, unsigned int); 86extern int cifs_setattr(struct dentry *, struct iattr *); 87extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start, 88 u64 len); 89 90extern const struct inode_operations cifs_file_inode_ops; 91extern const struct inode_operations cifs_symlink_inode_ops; 92extern const struct inode_operations cifs_dfs_referral_inode_operations; 93 94 95/* Functions related to files and directories */ 96extern const struct file_operations cifs_file_ops; 97extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */ 98extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */ 99extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */ 100extern const struct file_operations cifs_file_direct_nobrl_ops; 101extern const struct file_operations cifs_file_strict_nobrl_ops; 102extern int cifs_open(struct inode *inode, struct file *file); 103extern int cifs_close(struct inode *inode, struct file *file); 104extern int cifs_closedir(struct inode *inode, struct file *file); 105extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to); 106extern ssize_t cifs_direct_readv(struct kiocb *iocb, struct iov_iter *to); 107extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to); 108extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from); 109extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from); 110extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); 111extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock); 112extern int cifs_lock(struct file *, int, struct file_lock *); 113extern int cifs_fsync(struct file *, loff_t, loff_t, int); 114extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); 115extern int cifs_flush(struct file *, fl_owner_t id); 116extern int cifs_file_mmap(struct file * , struct vm_area_struct *); 117extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *); 118extern const struct file_operations cifs_dir_ops; 119extern int cifs_dir_open(struct inode *inode, struct file *file); 120extern int cifs_readdir(struct file *file, struct dir_context *ctx); 121 122/* Functions related to dir entries */ 123extern const struct dentry_operations cifs_dentry_ops; 124extern const struct dentry_operations cifs_ci_dentry_ops; 125 126#ifdef CONFIG_CIFS_DFS_UPCALL 127extern struct vfsmount *cifs_dfs_d_automount(struct path *path); 128#else 129static inline struct vfsmount *cifs_dfs_d_automount(struct path *path) 130{ 131 return ERR_PTR(-EREMOTE); 132} 133#endif 134 135/* Functions related to symlinks */ 136extern const char *cifs_get_link(struct dentry *, struct inode *, 137 struct delayed_call *); 138extern int cifs_symlink(struct inode *inode, struct dentry *direntry, 139 const char *symname); 140 141#ifdef CONFIG_CIFS_XATTR 142extern const struct xattr_handler *cifs_xattr_handlers[]; 143extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); 144#else 145# define cifs_xattr_handlers NULL 146# define cifs_listxattr NULL 147#endif 148 149extern ssize_t cifs_file_copychunk_range(unsigned int xid, 150 struct file *src_file, loff_t off, 151 struct file *dst_file, loff_t destoff, 152 size_t len, unsigned int flags); 153 154extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 155extern void cifs_setsize(struct inode *inode, loff_t offset); 156extern int cifs_truncate_page(struct address_space *mapping, loff_t from); 157 158#ifdef CONFIG_CIFS_NFSD_EXPORT 159extern const struct export_operations cifs_export_ops; 160#endif /* CONFIG_CIFS_NFSD_EXPORT */ 161 162#define CIFS_VERSION "2.29" 163#endif /* _CIFSFS_H */ 164