1/* SPDX-License-Identifier: LGPL-2.1 */ 2/* 3 * 4 * Copyright (c) International Business Machines Corp., 2002, 2007 5 * Author(s): Steve French (sfrench@us.ibm.com) 6 * 7 */ 8 9#ifndef _CIFSFS_H 10#define _CIFSFS_H 11 12#include <linux/hash.h> 13 14#define ROOT_I 2 15 16/* 17 * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down 18 * so that it will fit. We use hash_64 to convert the value to 31 bits, and 19 * then add 1, to ensure that we don't end up with a 0 as the value. 20 */ 21static inline ino_t 22cifs_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_invalidate_mapping(struct inode *inode); 73extern int cifs_revalidate_mapping(struct inode *inode); 74extern int cifs_zap_mapping(struct inode *inode); 75extern int cifs_getattr(struct mnt_idmap *, const struct path *, 76 struct kstat *, u32, unsigned int); 77extern int cifs_setattr(struct mnt_idmap *, struct dentry *, 78 struct iattr *); 79extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start, 80 u64 len); 81 82extern const struct inode_operations cifs_file_inode_ops; 83extern const struct inode_operations cifs_symlink_inode_ops; 84extern const struct inode_operations cifs_namespace_inode_operations; 85 86 87/* Functions related to files and directories */ 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_user_readv(struct kiocb *iocb, struct iov_iter *to); 98extern ssize_t cifs_direct_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_direct_writev(struct kiocb *iocb, struct iov_iter *from); 102extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); 103extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock); 104extern int cifs_lock(struct file *, int, struct file_lock *); 105extern int cifs_fsync(struct file *, loff_t, loff_t, int); 106extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); 107extern int cifs_flush(struct file *, fl_owner_t id); 108extern int cifs_file_mmap(struct file *file, struct vm_area_struct *vma); 109extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma); 110extern const struct file_operations cifs_dir_ops; 111extern int cifs_dir_open(struct inode *inode, struct file *file); 112extern int cifs_readdir(struct file *file, struct dir_context *ctx); 113extern void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len); 114extern void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len); 115extern void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len); 116 117/* Functions related to dir entries */ 118extern const struct dentry_operations cifs_dentry_ops; 119extern const struct dentry_operations cifs_ci_dentry_ops; 120 121extern struct vfsmount *cifs_d_automount(struct path *path); 122 123/* Functions related to symlinks */ 124extern const char *cifs_get_link(struct dentry *, struct inode *, 125 struct delayed_call *); 126extern int cifs_symlink(struct mnt_idmap *idmap, struct inode *inode, 127 struct dentry *direntry, const char *symname); 128 129#ifdef CONFIG_CIFS_XATTR 130extern const struct xattr_handler * const cifs_xattr_handlers[]; 131extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); 132#else 133# define cifs_xattr_handlers NULL 134# define cifs_listxattr NULL 135#endif 136 137extern ssize_t cifs_file_copychunk_range(unsigned int xid, 138 struct file *src_file, loff_t off, 139 struct file *dst_file, loff_t destoff, 140 size_t len, unsigned int flags); 141 142extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 143extern void cifs_setsize(struct inode *inode, loff_t offset); 144extern int cifs_truncate_page(struct address_space *mapping, loff_t from); 145 146struct smb3_fs_context; 147extern struct dentry *cifs_smb3_do_mount(struct file_system_type *fs_type, 148 int flags, struct smb3_fs_context *ctx); 149 150#ifdef CONFIG_CIFS_NFSD_EXPORT 151extern const struct export_operations cifs_export_ops; 152#endif /* CONFIG_CIFS_NFSD_EXPORT */ 153 154/* when changing internal version - update following two lines at same time */ 155#define SMB3_PRODUCT_BUILD 48 156#define CIFS_VERSION "2.48" 157#endif /* _CIFSFS_H */ 158