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Linux kernel mirror (for testing)
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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_revalidate_mapping(struct inode *inode);
73extern int cifs_zap_mapping(struct inode *inode);
74extern int cifs_getattr(struct mnt_idmap *, const struct path *,
75 struct kstat *, u32, unsigned int);
76extern int cifs_setattr(struct mnt_idmap *, struct dentry *,
77 struct iattr *);
78extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start,
79 u64 len);
80
81extern const struct inode_operations cifs_file_inode_ops;
82extern const struct inode_operations cifs_symlink_inode_ops;
83extern const struct inode_operations cifs_namespace_inode_operations;
84
85
86/* Functions related to files and directories */
87extern const struct netfs_request_ops cifs_req_ops;
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_strict_readv(struct kiocb *iocb, struct iov_iter *to);
98extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
99ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from);
100ssize_t cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter);
101extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock);
102extern int cifs_lock(struct file *, int, struct file_lock *);
103extern int cifs_fsync(struct file *, loff_t, loff_t, int);
104extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int);
105extern int cifs_flush(struct file *, fl_owner_t id);
106extern int cifs_file_mmap(struct file *file, struct vm_area_struct *vma);
107extern int cifs_file_strict_mmap(struct file *file, struct vm_area_struct *vma);
108extern const struct file_operations cifs_dir_ops;
109extern int cifs_readdir(struct file *file, struct dir_context *ctx);
110
111/* Functions related to dir entries */
112extern const struct dentry_operations cifs_dentry_ops;
113extern const struct dentry_operations cifs_ci_dentry_ops;
114
115extern struct vfsmount *cifs_d_automount(struct path *path);
116
117/* Functions related to symlinks */
118extern const char *cifs_get_link(struct dentry *, struct inode *,
119 struct delayed_call *);
120extern int cifs_symlink(struct mnt_idmap *idmap, struct inode *inode,
121 struct dentry *direntry, const char *symname);
122
123#ifdef CONFIG_CIFS_XATTR
124extern const struct xattr_handler * const cifs_xattr_handlers[];
125extern 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
131extern 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
136extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
137extern void cifs_setsize(struct inode *inode, loff_t offset);
138extern int cifs_truncate_page(struct address_space *mapping, loff_t from);
139
140struct smb3_fs_context;
141extern 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
145extern 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 53
150#define CIFS_VERSION "2.53"
151#endif /* _CIFSFS_H */