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_revalidate_mapping(struct inode *inode); 73 extern int cifs_zap_mapping(struct inode *inode); 74 extern int cifs_getattr(struct mnt_idmap *, const struct path *, 75 struct kstat *, u32, unsigned int); 76 extern int cifs_setattr(struct mnt_idmap *, struct dentry *, 77 struct iattr *); 78 extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start, 79 u64 len); 80 81 extern const struct inode_operations cifs_file_inode_ops; 82 extern const struct inode_operations cifs_symlink_inode_ops; 83 extern const struct inode_operations cifs_namespace_inode_operations; 84 85 86 /* Functions related to files and directories */ 87 extern const struct netfs_request_ops cifs_req_ops; 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_strict_readv(struct kiocb *iocb, struct iov_iter *to); 98 extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); 99 ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from); 100 ssize_t cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter); 101 extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock); 102 extern int cifs_lock(struct file *, int, struct file_lock *); 103 extern int cifs_fsync(struct file *, loff_t, loff_t, int); 104 extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); 105 extern int cifs_flush(struct file *, fl_owner_t id); 106 extern int cifs_file_mmap(struct file *file, struct vm_area_struct *vma); 107 extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma); 108 extern const struct file_operations cifs_dir_ops; 109 extern int cifs_readdir(struct file *file, struct dir_context *ctx); 110 111 /* Functions related to dir entries */ 112 extern const struct dentry_operations cifs_dentry_ops; 113 extern const struct dentry_operations cifs_ci_dentry_ops; 114 115 extern struct vfsmount *cifs_d_automount(struct path *path); 116 117 /* Functions related to symlinks */ 118 extern const char *cifs_get_link(struct dentry *, struct inode *, 119 struct delayed_call *); 120 extern int cifs_symlink(struct mnt_idmap *idmap, struct inode *inode, 121 struct dentry *direntry, const char *symname); 122 123 #ifdef CONFIG_CIFS_XATTR 124 extern const struct xattr_handler * const cifs_xattr_handlers[]; 125 extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); 126 #else 127 # define cifs_xattr_handlers NULL 128 # define cifs_listxattr NULL 129 #endif 130 131 extern 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); 135 136 extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); 137 extern void cifs_setsize(struct inode *inode, loff_t offset); 138 extern int cifs_truncate_page(struct address_space *mapping, loff_t from); 139 140 struct smb3_fs_context; 141 extern 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_EXPORT 145 extern 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 52 150 #define CIFS_VERSION "2.52" 151 #endif /* _CIFSFS_H */ 152