1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) 2019 Samsung Electronics Co., Ltd.
6 #ifndef __VFS_CACHE_H__
7 #define __VFS_CACHE_H__
9 #include <linux/file.h>
11 #include <linux/rwsem.h>
12 #include <linux/spinlock.h>
13 #include <linux/idr.h>
14 #include <linux/workqueue.h>
18 /* Windows style file permissions for extended response */
19 #define FILE_GENERIC_ALL 0x1F01FF
20 #define FILE_GENERIC_READ 0x120089
21 #define FILE_GENERIC_WRITE 0x120116
22 #define FILE_GENERIC_EXECUTE 0X1200a0
24 #define KSMBD_START_FID 0
25 #define KSMBD_NO_FID (INT_MAX)
26 #define SMB2_NO_FID (0xFFFFFFFFFFFFFFFFULL)
33 struct list_head clist;
34 struct list_head flist;
35 struct list_head llist;
39 unsigned long long start;
40 unsigned long long end;
52 /* opinfo count for streams */
56 struct hlist_node m_hash;
57 struct list_head m_fp_list;
58 struct list_head m_op_list;
59 struct oplock_info *m_opinfo;
76 struct ksmbd_inode *f_ci;
77 struct ksmbd_inode *f_parent_ci;
78 struct oplock_info __rcu *f_opinfo;
79 struct ksmbd_conn *conn;
80 struct ksmbd_tree_connect *tcon;
95 char app_instance_id[16];
98 struct list_head node;
99 struct list_head blocked_works;
100 struct list_head lock_list;
104 /* if ls is happening on directory, below is valid*/
105 struct ksmbd_readdir_data readdir_data;
107 unsigned int f_state;
108 bool reserve_lease_break;
111 static inline void set_ctx_actor(struct dir_context *ctx,
117 #define KSMBD_NR_OPEN_DEFAULT BITS_PER_LONG
119 struct ksmbd_file_table {
124 static inline bool has_file_id(u64 id)
126 return id < KSMBD_NO_FID;
129 static inline bool ksmbd_stream_fd(struct ksmbd_file *fp)
131 return fp->stream.name != NULL;
134 int ksmbd_init_file_table(struct ksmbd_file_table *ft);
135 void ksmbd_destroy_file_table(struct ksmbd_file_table *ft);
136 int ksmbd_close_fd(struct ksmbd_work *work, u64 id);
137 struct ksmbd_file *ksmbd_lookup_fd_fast(struct ksmbd_work *work, u64 id);
138 struct ksmbd_file *ksmbd_lookup_foreign_fd(struct ksmbd_work *work, u64 id);
139 struct ksmbd_file *ksmbd_lookup_fd_slow(struct ksmbd_work *work, u64 id,
141 void ksmbd_fd_put(struct ksmbd_work *work, struct ksmbd_file *fp);
142 struct ksmbd_inode *ksmbd_inode_lookup_lock(struct dentry *d);
143 void ksmbd_inode_put(struct ksmbd_inode *ci);
144 struct ksmbd_file *ksmbd_lookup_durable_fd(unsigned long long id);
145 struct ksmbd_file *ksmbd_lookup_fd_cguid(char *cguid);
146 struct ksmbd_file *ksmbd_lookup_fd_inode(struct dentry *dentry);
147 unsigned int ksmbd_open_durable_fd(struct ksmbd_file *fp);
148 struct ksmbd_file *ksmbd_open_fd(struct ksmbd_work *work, struct file *filp);
149 void ksmbd_close_tree_conn_fds(struct ksmbd_work *work);
150 void ksmbd_close_session_fds(struct ksmbd_work *work);
151 int ksmbd_close_inode_fds(struct ksmbd_work *work, struct inode *inode);
152 int ksmbd_init_global_file_table(void);
153 void ksmbd_free_global_file_table(void);
154 void ksmbd_set_fd_limit(unsigned long limit);
155 void ksmbd_update_fstate(struct ksmbd_file_table *ft, struct ksmbd_file *fp,
161 int __init ksmbd_inode_hash_init(void);
162 void ksmbd_release_inode_hash(void);
164 enum KSMBD_INODE_STATUS {
165 KSMBD_INODE_STATUS_OK,
166 KSMBD_INODE_STATUS_UNKNOWN,
167 KSMBD_INODE_STATUS_PENDING_DELETE,
170 int ksmbd_query_inode_status(struct dentry *dentry);
171 bool ksmbd_inode_pending_delete(struct ksmbd_file *fp);
172 void ksmbd_set_inode_pending_delete(struct ksmbd_file *fp);
173 void ksmbd_clear_inode_pending_delete(struct ksmbd_file *fp);
174 void ksmbd_fd_set_delete_on_close(struct ksmbd_file *fp,
176 int ksmbd_init_file_cache(void);
177 void ksmbd_exit_file_cache(void);
178 #endif /* __VFS_CACHE_H__ */