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 */ 21 static inline ino_t 22 cifs_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 31 static inline void cifs_set_time(struct dentry *dentry, unsigned long time) 32 { 33 dentry->d_fsdata = (void *) time; 34 } 35 36 static inline unsigned long cifs_get_time(struct dentry *dentry) 37 { 38 return (unsigned long) dentry->d_fsdata; 39 } 40 41 extern struct file_system_type cifs_fs_type, smb3_fs_type; 42 extern const struct address_space_operations cifs_addr_ops; 43 extern const struct address_space_operations cifs_addr_ops_smallbuf; 44 45 /* Functions related to super block operations */ 46 extern void cifs_sb_active(struct super_block *sb); 47 extern void cifs_sb_deactive(struct super_block *sb); 48 49 /* Functions related to inodes */ 50 extern const struct inode_operations cifs_dir_inode_ops; 51 extern struct inode *cifs_root_iget(struct super_block *); 52 extern int cifs_create(struct mnt_idmap *, struct inode *, 53 struct dentry *, umode_t, bool excl); 54 extern int cifs_atomic_open(struct inode *, struct dentry *, 55 struct file *, unsigned, umode_t); 56 extern struct dentry *cifs_lookup(struct inode *, struct dentry *, 57 unsigned int); 58 extern int cifs_unlink(struct inode *dir, struct dentry *dentry); 59 extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *); 60 extern int cifs_mknod(struct mnt_idmap *, struct inode *, struct dentry *, 61 umode_t, dev_t); 62 extern int cifs_mkdir(struct mnt_idmap *, struct inode *, struct dentry *, 63 umode_t); 64 extern int cifs_rmdir(struct inode *, struct dentry *); 65 extern int cifs_rename2(struct mnt_idmap *, struct inode *, 66 struct dentry *, struct inode *, struct dentry *, 67 unsigned int); 68 extern int cifs_revalidate_file_attr(struct file *filp); 69 extern int cifs_revalidate_dentry_attr(struct dentry *); 70 extern int cifs_revalidate_file(struct file *filp); 71 extern int cifs_revalidate_dentry(struct dentry *); 72 extern int cifs_invalidate_mapping(struct inode *inode); 73 extern int cifs_revalidate_mapping(struct inode *inode); 74 extern int cifs_zap_mapping(struct inode *inode); 75 extern int cifs_getattr(struct mnt_idmap *, const struct path *, 76 struct kstat *, u32, unsigned int); 77 extern int cifs_setattr(struct mnt_idmap *, struct dentry *, 78 struct iattr *); 79 extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start, 80 u64 len); 81 82 extern const struct inode_operations cifs_file_inode_ops; 83 extern const struct inode_operations cifs_symlink_inode_ops; 84 extern const struct inode_operations cifs_namespace_inode_operations; 85 86 87 /* Functions related to files and directories */ 88 extern const struct file_operations cifs_file_ops; 89 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */ 90 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */ 91 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */ 92 extern const struct file_operations cifs_file_direct_nobrl_ops; 93 extern const struct file_operations cifs_file_strict_nobrl_ops; 94 extern int cifs_open(struct inode *inode, struct file *file); 95 extern int cifs_close(struct inode *inode, struct file *file); 96 extern int cifs_closedir(struct inode *inode, struct file *file); 97 extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to); 98 extern ssize_t cifs_direct_readv(struct kiocb *iocb, struct iov_iter *to); 99 extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to); 100 extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from); 101 extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from); 102 extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); 103 extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock); 104 extern int cifs_lock(struct file *, int, struct file_lock *); 105 extern int cifs_fsync(struct file *, loff_t, loff_t, int); 106 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); 107 extern int cifs_flush(struct file *, fl_owner_t id); 108 extern int cifs_file_mmap(struct file *file, struct vm_area_struct *vma); 109 extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma); 110 extern const struct file_operations cifs_dir_ops; 111 extern int cifs_dir_open(struct inode *inode, struct file *file); 112 extern int cifs_readdir(struct file *file, struct dir_context *ctx); 113 extern void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len); 114 extern void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len); 115 extern void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len); 116 117 /* Functions related to dir entries */ 118 extern const struct dentry_operations cifs_dentry_ops; 119 extern const struct dentry_operations cifs_ci_dentry_ops; 120 121 extern struct vfsmount *cifs_d_automount(struct path *path); 122 123 /* Functions related to symlinks */ 124 extern const char *cifs_get_link(struct dentry *, struct inode *, 125 struct delayed_call *); 126 extern int cifs_symlink(struct mnt_idmap *idmap, struct inode *inode, 127 struct dentry *direntry, const char *symname); 128 129 #ifdef CONFIG_CIFS_XATTR 130 extern const struct xattr_handler * const cifs_xattr_handlers[]; 131 extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); 132 #else 133 # define cifs_xattr_handlers NULL 134 # define cifs_listxattr NULL 135 #endif 136 137 extern 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); 141 142 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 143 extern void cifs_setsize(struct inode *inode, loff_t offset); 144 extern int cifs_truncate_page(struct address_space *mapping, loff_t from); 145 146 struct smb3_fs_context; 147 extern 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 151 extern 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 47 156 #define CIFS_VERSION "2.47" 157 #endif /* _CIFSFS_H */ 158