/* SPDX-License-Identifier: LGPL-2.1 */ /* * * Copyright (c) International Business Machines Corp., 2002, 2007 * Author(s): Steve French (sfrench@us.ibm.com) * */ #ifndef _CIFSFS_H #define _CIFSFS_H #include <linux/hash.h> #define ROOT_I 2 /* * ino_t is 32-bits on 32-bit arch. We have to squash the 64-bit value down * so that it will fit. We use hash_64 to convert the value to 31 bits, and * then add 1, to ensure that we don't end up with a 0 as the value. */ static inline ino_t cifs_uniqueid_to_ino_t(u64 fileid) { if ((sizeof(ino_t)) < (sizeof(u64))) return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1; return (ino_t)fileid; } static inline void cifs_set_time(struct dentry *dentry, unsigned long time) { dentry->d_fsdata = (void *) time; } static inline unsigned long cifs_get_time(struct dentry *dentry) { return (unsigned long) dentry->d_fsdata; } extern struct file_system_type cifs_fs_type, smb3_fs_type; extern const struct address_space_operations cifs_addr_ops; extern const struct address_space_operations cifs_addr_ops_smallbuf; /* Functions related to super block operations */ extern void cifs_sb_active(struct super_block *sb); extern void cifs_sb_deactive(struct super_block *sb); /* Functions related to inodes */ extern const struct inode_operations cifs_dir_inode_ops; extern struct inode *cifs_root_iget(struct super_block *); extern int cifs_create(struct user_namespace *, struct inode *, struct dentry *, umode_t, bool excl); extern int cifs_atomic_open(struct inode *, struct dentry *, struct file *, unsigned, umode_t); extern struct dentry *cifs_lookup(struct inode *, struct dentry *, unsigned int); extern int cifs_unlink(struct inode *dir, struct dentry *dentry); extern int cifs_hardlink(struct dentry *, struct inode *, struct dentry *); extern int cifs_mknod(struct user_namespace *, struct inode *, struct dentry *, umode_t, dev_t); extern int cifs_mkdir(struct user_namespace *, struct inode *, struct dentry *, umode_t); extern int cifs_rmdir(struct inode *, struct dentry *); extern int cifs_rename2(struct user_namespace *, struct inode *, struct dentry *, struct inode *, struct dentry *, unsigned int); extern int cifs_revalidate_file_attr(struct file *filp); extern int cifs_revalidate_dentry_attr(struct dentry *); extern int cifs_revalidate_file(struct file *filp); extern int cifs_revalidate_dentry(struct dentry *); extern int cifs_invalidate_mapping(struct inode *inode); extern int cifs_revalidate_mapping(struct inode *inode); extern int cifs_zap_mapping(struct inode *inode); extern int cifs_getattr(struct user_namespace *, const struct path *, struct kstat *, u32, unsigned int); extern int cifs_setattr(struct user_namespace *, struct dentry *, struct iattr *); extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start, u64 len); extern const struct inode_operations cifs_file_inode_ops; extern const struct inode_operations cifs_symlink_inode_ops; extern const struct inode_operations cifs_dfs_referral_inode_operations; /* Functions related to files and directories */ extern const struct file_operations cifs_file_ops; extern const struct file_operations cifs_file_direct_ops; /* if directio mnt */ extern const struct file_operations cifs_file_strict_ops; /* if strictio mnt */ extern const struct file_operations cifs_file_nobrl_ops; /* no brlocks */ extern const struct file_operations cifs_file_direct_nobrl_ops; extern const struct file_operations cifs_file_strict_nobrl_ops; extern int cifs_open(struct inode *inode, struct file *file); extern int cifs_close(struct inode *inode, struct file *file); extern int cifs_closedir(struct inode *inode, struct file *file); extern ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to); extern ssize_t cifs_direct_readv(struct kiocb *iocb, struct iov_iter *to); extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to); extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from); extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from); extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); extern ssize_t cifs_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags); extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock); extern int cifs_lock(struct file *, int, struct file_lock *); extern int cifs_fsync(struct file *, loff_t, loff_t, int); extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); extern int cifs_flush(struct file *, fl_owner_t id); extern int cifs_file_mmap(struct file *file, struct vm_area_struct *vma); extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma); extern const struct file_operations cifs_dir_ops; extern int cifs_dir_open(struct inode *inode, struct file *file); extern int cifs_readdir(struct file *file, struct dir_context *ctx); extern void cifs_pages_written_back(struct inode *inode, loff_t start, unsigned int len); extern void cifs_pages_write_failed(struct inode *inode, loff_t start, unsigned int len); extern void cifs_pages_write_redirty(struct inode *inode, loff_t start, unsigned int len); /* Functions related to dir entries */ extern const struct dentry_operations cifs_dentry_ops; extern const struct dentry_operations cifs_ci_dentry_ops; #ifdef CONFIG_CIFS_DFS_UPCALL extern struct vfsmount *cifs_dfs_d_automount(struct path *path); #else #define cifs_dfs_d_automount NULL #endif /* Functions related to symlinks */ extern const char *cifs_get_link(struct dentry *, struct inode *, struct delayed_call *); extern int cifs_symlink(struct user_namespace *mnt_userns, struct inode *inode, struct dentry *direntry, const char *symname); #ifdef CONFIG_CIFS_XATTR extern const struct xattr_handler *cifs_xattr_handlers[]; extern ssize_t cifs_listxattr(struct dentry *, char *, size_t); #else # define cifs_xattr_handlers NULL # define cifs_listxattr NULL #endif extern ssize_t cifs_file_copychunk_range(unsigned int xid, struct file *src_file, loff_t off, struct file *dst_file, loff_t destoff, size_t len, unsigned int flags); extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); extern void cifs_setsize(struct inode *inode, loff_t offset); extern int cifs_truncate_page(struct address_space *mapping, loff_t from); struct smb3_fs_context; extern struct dentry *cifs_smb3_do_mount(struct file_system_type *fs_type, int flags, struct smb3_fs_context *ctx); #ifdef CONFIG_CIFS_NFSD_EXPORT extern const struct export_operations cifs_export_ops; #endif /* CONFIG_CIFS_NFSD_EXPORT */ /* when changing internal version - update following two lines at same time */ #define SMB3_PRODUCT_BUILD 41 #define CIFS_VERSION "2.41" #endif /* _CIFSFS_H */