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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
4 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
5 */
6
7#ifndef __KSMBD_VFS_H__
8#define __KSMBD_VFS_H__
9
10#include <linux/file.h>
11#include <linux/fs.h>
12#include <linux/namei.h>
13#include <uapi/linux/xattr.h>
14#include <linux/posix_acl.h>
15#include <linux/unicode.h>
16
17#include "smbacl.h"
18#include "xattr.h"
19
20/*
21 * Enumeration for stream type.
22 */
23enum {
24 DATA_STREAM = 1, /* type $DATA */
25 DIR_STREAM /* type $INDEX_ALLOCATION */
26};
27
28/* CreateOptions */
29#define CREATE_TREE_CONNECTION cpu_to_le32(0x00000080)
30#define FILE_RESERVE_OPFILTER_LE cpu_to_le32(0x00100000)
31
32#define CREATE_OPTION_READONLY 0x10000000
33/* system. NB not sent over wire */
34#define CREATE_OPTION_SPECIAL 0x20000000
35
36struct ksmbd_work;
37struct ksmbd_file;
38struct ksmbd_conn;
39
40struct ksmbd_dir_info {
41 const char *name;
42 char *wptr;
43 char *rptr;
44 int name_len;
45 int out_buf_len;
46 int num_entry;
47 int data_count;
48 int last_entry_offset;
49 bool hide_dot_file;
50 int flags;
51 int last_entry_off_align;
52};
53
54struct ksmbd_readdir_data {
55 struct dir_context ctx;
56 union {
57 void *private;
58 char *dirent;
59 };
60
61 unsigned int used;
62 unsigned int dirent_count;
63 unsigned int file_attr;
64 struct unicode_map *um;
65};
66
67/* ksmbd kstat wrapper to get valid create time when reading dir entry */
68struct ksmbd_kstat {
69 struct kstat *kstat;
70 unsigned long long create_time;
71 __le32 file_attributes;
72};
73
74int ksmbd_vfs_lock_parent(struct dentry *parent, struct dentry *child);
75void ksmbd_vfs_query_maximal_access(struct mnt_idmap *idmap,
76 struct dentry *dentry, __le32 *daccess);
77int ksmbd_vfs_create(struct ksmbd_work *work, const char *name, umode_t mode);
78int ksmbd_vfs_mkdir(struct ksmbd_work *work, const char *name, umode_t mode);
79int ksmbd_vfs_read(struct ksmbd_work *work, struct ksmbd_file *fp, size_t count,
80 loff_t *pos, char *rbuf);
81int ksmbd_vfs_write(struct ksmbd_work *work, struct ksmbd_file *fp,
82 char *buf, size_t count, loff_t *pos, bool sync,
83 ssize_t *written);
84int ksmbd_vfs_fsync(struct ksmbd_work *work, u64 fid, u64 p_id);
85int ksmbd_vfs_remove_file(struct ksmbd_work *work, const struct path *path);
86int ksmbd_vfs_link(struct ksmbd_work *work,
87 const char *oldname, const char *newname);
88int ksmbd_vfs_getattr(const struct path *path, struct kstat *stat);
89int ksmbd_vfs_rename(struct ksmbd_work *work, const struct path *old_path,
90 char *newname, int flags);
91int ksmbd_vfs_truncate(struct ksmbd_work *work,
92 struct ksmbd_file *fp, loff_t size);
93struct srv_copychunk;
94int ksmbd_vfs_copy_file_ranges(struct ksmbd_work *work,
95 struct ksmbd_file *src_fp,
96 struct ksmbd_file *dst_fp,
97 struct srv_copychunk *chunks,
98 unsigned int chunk_count,
99 unsigned int *chunk_count_written,
100 unsigned int *chunk_size_written,
101 loff_t *total_size_written);
102ssize_t ksmbd_vfs_listxattr(struct dentry *dentry, char **list);
103ssize_t ksmbd_vfs_getxattr(struct mnt_idmap *idmap,
104 struct dentry *dentry,
105 char *xattr_name,
106 char **xattr_buf);
107ssize_t ksmbd_vfs_casexattr_len(struct mnt_idmap *idmap,
108 struct dentry *dentry, char *attr_name,
109 int attr_name_len);
110int ksmbd_vfs_setxattr(struct mnt_idmap *idmap,
111 const struct path *path, const char *attr_name,
112 void *attr_value, size_t attr_size, int flags,
113 bool get_write);
114int ksmbd_vfs_xattr_stream_name(char *stream_name, char **xattr_stream_name,
115 size_t *xattr_stream_name_size, int s_type);
116int ksmbd_vfs_remove_xattr(struct mnt_idmap *idmap,
117 const struct path *path, char *attr_name);
118int ksmbd_vfs_kern_path_locked(struct ksmbd_work *work, char *name,
119 unsigned int flags, struct path *parent_path,
120 struct path *path, bool caseless);
121void ksmbd_vfs_kern_path_unlock(struct path *parent_path, struct path *path);
122struct dentry *ksmbd_vfs_kern_path_create(struct ksmbd_work *work,
123 const char *name,
124 unsigned int flags,
125 struct path *path);
126int ksmbd_vfs_empty_dir(struct ksmbd_file *fp);
127void ksmbd_vfs_set_fadvise(struct file *filp, __le32 option);
128int ksmbd_vfs_zero_data(struct ksmbd_work *work, struct ksmbd_file *fp,
129 loff_t off, loff_t len);
130struct file_allocated_range_buffer;
131int ksmbd_vfs_fqar_lseek(struct ksmbd_file *fp, loff_t start, loff_t length,
132 struct file_allocated_range_buffer *ranges,
133 unsigned int in_count, unsigned int *out_count);
134int ksmbd_vfs_unlink(struct file *filp);
135void *ksmbd_vfs_init_kstat(char **p, struct ksmbd_kstat *ksmbd_kstat);
136int ksmbd_vfs_fill_dentry_attrs(struct ksmbd_work *work,
137 struct mnt_idmap *idmap,
138 struct dentry *dentry,
139 struct ksmbd_kstat *ksmbd_kstat);
140void ksmbd_vfs_posix_lock_wait(struct file_lock *flock);
141int ksmbd_vfs_posix_lock_wait_timeout(struct file_lock *flock, long timeout);
142void ksmbd_vfs_posix_lock_unblock(struct file_lock *flock);
143int ksmbd_vfs_remove_acl_xattrs(struct mnt_idmap *idmap,
144 const struct path *path);
145int ksmbd_vfs_remove_sd_xattrs(struct mnt_idmap *idmap, const struct path *path);
146int ksmbd_vfs_set_sd_xattr(struct ksmbd_conn *conn,
147 struct mnt_idmap *idmap,
148 const struct path *path,
149 struct smb_ntsd *pntsd, int len,
150 bool get_write);
151int ksmbd_vfs_get_sd_xattr(struct ksmbd_conn *conn,
152 struct mnt_idmap *idmap,
153 struct dentry *dentry,
154 struct smb_ntsd **pntsd);
155int ksmbd_vfs_set_dos_attrib_xattr(struct mnt_idmap *idmap,
156 const struct path *path,
157 struct xattr_dos_attrib *da,
158 bool get_write);
159int ksmbd_vfs_get_dos_attrib_xattr(struct mnt_idmap *idmap,
160 struct dentry *dentry,
161 struct xattr_dos_attrib *da);
162int ksmbd_vfs_set_init_posix_acl(struct mnt_idmap *idmap,
163 struct path *path);
164int ksmbd_vfs_inherit_posix_acl(struct mnt_idmap *idmap,
165 struct path *path,
166 struct inode *parent_inode);
167#endif /* __KSMBD_VFS_H__ */