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 glist;
34 struct list_head llist;
38 unsigned long long start;
39 unsigned long long end;
51 /* opinfo count for streams */
53 struct inode *m_inode;
55 struct hlist_node m_hash;
56 struct list_head m_fp_list;
57 struct list_head m_op_list;
58 struct oplock_info *m_opinfo;
70 struct ksmbd_inode *f_ci;
71 struct ksmbd_inode *f_parent_ci;
72 struct oplock_info __rcu *f_opinfo;
73 struct ksmbd_conn *conn;
74 struct ksmbd_tree_connect *tcon;
89 char app_instance_id[16];
92 struct list_head node;
93 struct list_head blocked_works;
100 /* conflict lock fail count for SMB1 */
101 unsigned int cflock_cnt;
102 /* last lock failure start offset for SMB1 */
103 unsigned long long llock_fstart;
107 /* if ls is happening on directory, below is valid*/
108 struct ksmbd_readdir_data readdir_data;
112 static inline void set_ctx_actor(struct dir_context *ctx,
118 #define KSMBD_NR_OPEN_DEFAULT BITS_PER_LONG
120 struct ksmbd_file_table {
125 static inline bool has_file_id(u64 id)
127 return id < KSMBD_NO_FID;
130 static inline bool ksmbd_stream_fd(struct ksmbd_file *fp)
132 return fp->stream.name != NULL;
135 int ksmbd_init_file_table(struct ksmbd_file_table *ft);
136 void ksmbd_destroy_file_table(struct ksmbd_file_table *ft);
137 int ksmbd_close_fd(struct ksmbd_work *work, u64 id);
138 struct ksmbd_file *ksmbd_lookup_fd_fast(struct ksmbd_work *work, u64 id);
139 struct ksmbd_file *ksmbd_lookup_foreign_fd(struct ksmbd_work *work, u64 id);
140 struct ksmbd_file *ksmbd_lookup_fd_slow(struct ksmbd_work *work, u64 id,
142 void ksmbd_fd_put(struct ksmbd_work *work, struct ksmbd_file *fp);
143 struct ksmbd_file *ksmbd_lookup_durable_fd(unsigned long long id);
144 struct ksmbd_file *ksmbd_lookup_fd_cguid(char *cguid);
145 struct ksmbd_file *ksmbd_lookup_fd_inode(struct inode *inode);
146 unsigned int ksmbd_open_durable_fd(struct ksmbd_file *fp);
147 struct ksmbd_file *ksmbd_open_fd(struct ksmbd_work *work, struct file *filp);
148 void ksmbd_close_tree_conn_fds(struct ksmbd_work *work);
149 void ksmbd_close_session_fds(struct ksmbd_work *work);
150 int ksmbd_close_inode_fds(struct ksmbd_work *work, struct inode *inode);
151 int ksmbd_init_global_file_table(void);
152 void ksmbd_free_global_file_table(void);
153 int ksmbd_file_table_flush(struct ksmbd_work *work);
154 void ksmbd_set_fd_limit(unsigned long limit);
159 int __init ksmbd_inode_hash_init(void);
160 void ksmbd_release_inode_hash(void);
162 enum KSMBD_INODE_STATUS {
163 KSMBD_INODE_STATUS_OK,
164 KSMBD_INODE_STATUS_UNKNOWN,
165 KSMBD_INODE_STATUS_PENDING_DELETE,
168 int ksmbd_query_inode_status(struct inode *inode);
169 bool ksmbd_inode_pending_delete(struct ksmbd_file *fp);
170 void ksmbd_set_inode_pending_delete(struct ksmbd_file *fp);
171 void ksmbd_clear_inode_pending_delete(struct ksmbd_file *fp);
172 void ksmbd_fd_set_delete_on_close(struct ksmbd_file *fp,
174 int ksmbd_init_file_cache(void);
175 void ksmbd_exit_file_cache(void);
176 #endif /* __VFS_CACHE_H__ */