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1/* SPDX-License-Identifier: LGPL-2.1 */2/*3 *4 * Copyright (c) International Business Machines Corp., 2002, 20075 * Author(s): Steve French (sfrench@us.ibm.com)6 *7 */8 9#ifndef _CIFSFS_H10#define _CIFSFS_H11 12#include <linux/hash.h>13 14#define ROOT_I 215 16/*17 * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down18 * so that it will fit. We use hash_64 to convert the value to 31 bits, and19 * then add 1, to ensure that we don't end up with a 0 as the value.20 */21static inline ino_t22cifs_uniqueid_to_ino_t(u64 fileid)23{24 if ((sizeof(ino_t)) < (sizeof(u64)))25 return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;26 27 return (ino_t)fileid;28 29}30 31static inline void cifs_set_time(struct dentry *dentry, unsigned long time)32{33 dentry->d_fsdata = (void *) time;34}35 36static inline unsigned long cifs_get_time(struct dentry *dentry)37{38 return (unsigned long) dentry->d_fsdata;39}40 41extern struct file_system_type cifs_fs_type, smb3_fs_type;42extern const struct address_space_operations cifs_addr_ops;43extern const struct address_space_operations cifs_addr_ops_smallbuf;44 45/* Functions related to super block operations */46extern void cifs_sb_active(struct super_block *sb);47extern void cifs_sb_deactive(struct super_block *sb);48 49/* Functions related to inodes */50extern const struct inode_operations cifs_dir_inode_ops;51extern struct inode *cifs_root_iget(struct super_block *);52extern int cifs_create(struct mnt_idmap *, struct inode *,53 struct dentry *, umode_t, bool excl);54extern int cifs_atomic_open(struct inode *, struct dentry *,55 struct file *, unsigned, umode_t);56extern struct dentry *cifs_lookup(struct inode *, struct dentry *,57 unsigned int);58extern int cifs_unlink(struct inode *dir, struct dentry *dentry);59extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *);60extern int cifs_mknod(struct mnt_idmap *, struct inode *, struct dentry *,61 umode_t, dev_t);62extern int cifs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *,63 umode_t);64extern int cifs_rmdir(struct inode *, struct dentry *);65extern int cifs_rename2(struct mnt_idmap *, struct inode *,66 struct dentry *, struct inode *, struct dentry *,67 unsigned int);68extern int cifs_revalidate_file_attr(struct file *filp);69extern int cifs_revalidate_dentry_attr(struct dentry *);70extern int cifs_revalidate_file(struct file *filp);71extern int cifs_revalidate_dentry(struct dentry *);72extern int cifs_revalidate_mapping(struct inode *inode);73extern int cifs_zap_mapping(struct inode *inode);74extern int cifs_getattr(struct mnt_idmap *, const struct path *,75 struct kstat *, u32, unsigned int);76extern int cifs_setattr(struct mnt_idmap *, struct dentry *,77 struct iattr *);78extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start,79 u64 len);80 81extern const struct inode_operations cifs_file_inode_ops;82extern const struct inode_operations cifs_symlink_inode_ops;83extern const struct inode_operations cifs_namespace_inode_operations;84 85 86/* Functions related to files and directories */87extern const struct netfs_request_ops cifs_req_ops;88extern const struct file_operations cifs_file_ops;89extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */90extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */91extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */92extern const struct file_operations cifs_file_direct_nobrl_ops;93extern const struct file_operations cifs_file_strict_nobrl_ops;94extern int cifs_open(struct inode *inode, struct file *file);95extern int cifs_close(struct inode *inode, struct file *file);96extern int cifs_closedir(struct inode *inode, struct file *file);97extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to);98extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);99ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from);100ssize_t cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter);101extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock);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 *file, struct vm_area_struct *vma);107extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma);108extern const struct file_operations cifs_dir_ops;109extern int cifs_readdir(struct file *file, struct dir_context *ctx);110 111/* Functions related to dir entries */112extern const struct dentry_operations cifs_dentry_ops;113extern const struct dentry_operations cifs_ci_dentry_ops;114 115extern struct vfsmount *cifs_d_automount(struct path *path);116 117/* Functions related to symlinks */118extern const char *cifs_get_link(struct dentry *, struct inode *,119 struct delayed_call *);120extern int cifs_symlink(struct mnt_idmap *idmap, struct inode *inode,121 struct dentry *direntry, const char *symname);122 123#ifdef CONFIG_CIFS_XATTR124extern const struct xattr_handler * const cifs_xattr_handlers[];125extern ssize_t cifs_listxattr(struct dentry *, char *, size_t);126#else127# define cifs_xattr_handlers NULL128# define cifs_listxattr NULL129#endif130 131extern ssize_t cifs_file_copychunk_range(unsigned int xid,132 struct file *src_file, loff_t off,133 struct file *dst_file, loff_t destoff,134 size_t len, unsigned int flags);135 136extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);137extern void cifs_setsize(struct inode *inode, loff_t offset);138extern int cifs_truncate_page(struct address_space *mapping, loff_t from);139 140struct smb3_fs_context;141extern struct dentry *cifs_smb3_do_mount(struct file_system_type *fs_type,142 int flags, struct smb3_fs_context *ctx);143 144#ifdef CONFIG_CIFS_NFSD_EXPORT145extern const struct export_operations cifs_export_ops;146#endif /* CONFIG_CIFS_NFSD_EXPORT */147 148/* when changing internal version - update following two lines at same time */149#define SMB3_PRODUCT_BUILD 51150#define CIFS_VERSION "2.51"151#endif /* _CIFSFS_H */152