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 */
54 struct inode *m_inode;
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;
110 static inline void set_ctx_actor(struct dir_context *ctx,
116 #define KSMBD_NR_OPEN_DEFAULT BITS_PER_LONG
118 struct ksmbd_file_table {
123 static inline bool has_file_id(u64 id)
125 return id < KSMBD_NO_FID;
128 static inline bool ksmbd_stream_fd(struct ksmbd_file *fp)
130 return fp->stream.name != NULL;
133 int ksmbd_init_file_table(struct ksmbd_file_table *ft);
134 void ksmbd_destroy_file_table(struct ksmbd_file_table *ft);
135 int ksmbd_close_fd(struct ksmbd_work *work, u64 id);
136 struct ksmbd_file *ksmbd_lookup_fd_fast(struct ksmbd_work *work, u64 id);
137 struct ksmbd_file *ksmbd_lookup_foreign_fd(struct ksmbd_work *work, u64 id);
138 struct ksmbd_file *ksmbd_lookup_fd_slow(struct ksmbd_work *work, u64 id,
140 void ksmbd_fd_put(struct ksmbd_work *work, struct ksmbd_file *fp);
141 struct ksmbd_file *ksmbd_lookup_durable_fd(unsigned long long id);
142 struct ksmbd_file *ksmbd_lookup_fd_cguid(char *cguid);
143 struct ksmbd_file *ksmbd_lookup_fd_inode(struct inode *inode);
144 unsigned int ksmbd_open_durable_fd(struct ksmbd_file *fp);
145 struct ksmbd_file *ksmbd_open_fd(struct ksmbd_work *work, struct file *filp);
146 void ksmbd_close_tree_conn_fds(struct ksmbd_work *work);
147 void ksmbd_close_session_fds(struct ksmbd_work *work);
148 int ksmbd_close_inode_fds(struct ksmbd_work *work, struct inode *inode);
149 int ksmbd_init_global_file_table(void);
150 void ksmbd_free_global_file_table(void);
151 void ksmbd_set_fd_limit(unsigned long limit);
152 void ksmbd_update_fstate(struct ksmbd_file_table *ft, struct ksmbd_file *fp,
158 int __init ksmbd_inode_hash_init(void);
159 void ksmbd_release_inode_hash(void);
161 enum KSMBD_INODE_STATUS {
162 KSMBD_INODE_STATUS_OK,
163 KSMBD_INODE_STATUS_UNKNOWN,
164 KSMBD_INODE_STATUS_PENDING_DELETE,
167 int ksmbd_query_inode_status(struct inode *inode);
168 bool ksmbd_inode_pending_delete(struct ksmbd_file *fp);
169 void ksmbd_set_inode_pending_delete(struct ksmbd_file *fp);
170 void ksmbd_clear_inode_pending_delete(struct ksmbd_file *fp);
171 void ksmbd_fd_set_delete_on_close(struct ksmbd_file *fp,
173 int ksmbd_init_file_cache(void);
174 void ksmbd_exit_file_cache(void);
175 #endif /* __VFS_CACHE_H__ */