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 void cifs_sb_active(struct super_block *sb); 47 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 struct inode *cifs_root_iget(struct super_block *sb); 52 int cifs_create(struct mnt_idmap *idmap, struct inode *inode, 53 struct dentry *direntry, umode_t mode, bool excl); 54 int cifs_atomic_open(struct inode *inode, struct dentry *direntry, 55 struct file *file, unsigned int oflags, umode_t mode); 56 struct dentry *cifs_lookup(struct inode *parent_dir_inode, 57 struct dentry *direntry, unsigned int flags); 58 int cifs_unlink(struct inode *dir, struct dentry *dentry); 59 int cifs_hardlink(struct dentry *old_file, struct inode *inode, 60 struct dentry *direntry); 61 int cifs_mknod(struct mnt_idmap *idmap, struct inode *inode, 62 struct dentry *direntry, umode_t mode, dev_t device_number); 63 struct dentry *cifs_mkdir(struct mnt_idmap *idmap, struct inode *inode, 64 struct dentry *direntry, umode_t mode); 65 int cifs_rmdir(struct inode *inode, struct dentry *direntry); 66 int cifs_rename2(struct mnt_idmap *idmap, struct inode *source_dir, 67 struct dentry *source_dentry, struct inode *target_dir, 68 struct dentry *target_dentry, unsigned int flags); 69 int cifs_revalidate_file_attr(struct file *filp); 70 int cifs_revalidate_dentry_attr(struct dentry *dentry); 71 int cifs_revalidate_file(struct file *filp); 72 int cifs_revalidate_dentry(struct dentry *dentry); 73 int cifs_revalidate_mapping(struct inode *inode); 74 int cifs_zap_mapping(struct inode *inode); 75 int cifs_getattr(struct mnt_idmap *idmap, const struct path *path, 76 struct kstat *stat, u32 request_mask, unsigned int flags); 77 int cifs_setattr(struct mnt_idmap *idmap, struct dentry *direntry, 78 struct iattr *attrs); 79 int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, 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 netfs_request_ops cifs_req_ops; 89 extern const struct file_operations cifs_file_ops; 90 extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */ 91 extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */ 92 extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */ 93 extern const struct file_operations cifs_file_direct_nobrl_ops; 94 extern const struct file_operations cifs_file_strict_nobrl_ops; 95 int cifs_open(struct inode *inode, struct file *file); 96 int cifs_close(struct inode *inode, struct file *file); 97 int cifs_closedir(struct inode *inode, struct file *file); 98 ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to); 99 ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); 100 ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from); 101 ssize_t cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter); 102 int cifs_flock(struct file *file, int cmd, struct file_lock *fl); 103 int cifs_lock(struct file *file, int cmd, struct file_lock *flock); 104 int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync); 105 int cifs_strict_fsync(struct file *file, loff_t start, loff_t end, 106 int datasync); 107 int cifs_flush(struct file *file, fl_owner_t id); 108 int cifs_file_mmap_prepare(struct vm_area_desc *desc); 109 int cifs_file_strict_mmap_prepare(struct vm_area_desc *desc); 110 extern const struct file_operations cifs_dir_ops; 111 int cifs_readdir(struct file *file, struct dir_context *ctx); 112 113 /* Functions related to dir entries */ 114 extern const struct dentry_operations cifs_dentry_ops; 115 extern const struct dentry_operations cifs_ci_dentry_ops; 116 117 struct vfsmount *cifs_d_automount(struct path *path); 118 119 /* Functions related to symlinks */ 120 const char *cifs_get_link(struct dentry *dentry, struct inode *inode, 121 struct delayed_call *done); 122 int cifs_symlink(struct mnt_idmap *idmap, struct inode *inode, 123 struct dentry *direntry, const char *symname); 124 125 #ifdef CONFIG_CIFS_XATTR 126 extern const struct xattr_handler * const cifs_xattr_handlers[]; 127 ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size); 128 #else 129 # define cifs_xattr_handlers NULL 130 # define cifs_listxattr NULL 131 #endif 132 133 ssize_t cifs_file_copychunk_range(unsigned int xid, struct file *src_file, 134 loff_t off, struct file *dst_file, 135 loff_t destoff, size_t len, 136 unsigned int flags); 137 138 long cifs_ioctl(struct file *filep, unsigned int command, unsigned long arg); 139 void cifs_setsize(struct inode *inode, loff_t offset); 140 141 struct smb3_fs_context; 142 struct dentry *cifs_smb3_do_mount(struct file_system_type *fs_type, int flags, 143 struct smb3_fs_context *old_ctx); 144 145 #ifdef CONFIG_CIFS_NFSD_EXPORT 146 extern const struct export_operations cifs_export_ops; 147 #endif /* CONFIG_CIFS_NFSD_EXPORT */ 148 149 /* when changing internal version - update following two lines at same time */ 150 #define SMB3_PRODUCT_BUILD 58 151 #define CIFS_VERSION "2.58" 152 #endif /* _CIFSFS_H */ 153