1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
4 */
5
6 #ifndef __USER_SESSION_MANAGEMENT_H__
7 #define __USER_SESSION_MANAGEMENT_H__
8
9 #include <linux/hashtable.h>
10 #include <linux/xarray.h>
11
12 #include "../smb_common.h"
13 #include "../ntlmssp.h"
14
15 #define CIFDS_SESSION_FLAG_SMB2 BIT(1)
16
17 #define PREAUTH_HASHVALUE_SIZE 64
18
19 struct ksmbd_file_table;
20
21 struct channel {
22 __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
23 struct ksmbd_conn *conn;
24 struct list_head chann_list;
25 };
26
27 struct preauth_session {
28 __u8 Preauth_HashValue[PREAUTH_HASHVALUE_SIZE];
29 u64 id;
30 struct list_head preauth_entry;
31 };
32
33 struct ksmbd_session {
34 u64 id;
35
36 struct ksmbd_user *user;
37 struct ksmbd_conn *conn;
38 unsigned int sequence_number;
39 unsigned int flags;
40
41 bool sign;
42 bool enc;
43 bool is_anonymous;
44
45 int state;
46 __u8 *Preauth_HashValue;
47
48 char sess_key[CIFS_KEY_SIZE];
49
50 struct hlist_node hlist;
51 struct list_head ksmbd_chann_list;
52 struct xarray tree_conns;
53 struct ida tree_conn_ida;
54 struct list_head rpc_handle_list;
55
56 __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE];
57 __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE];
58 __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
59
60 struct list_head sessions_entry;
61 struct ksmbd_file_table file_table;
62 atomic_t refcnt;
63 };
64
test_session_flag(struct ksmbd_session * sess,int bit)65 static inline int test_session_flag(struct ksmbd_session *sess, int bit)
66 {
67 return sess->flags & bit;
68 }
69
set_session_flag(struct ksmbd_session * sess,int bit)70 static inline void set_session_flag(struct ksmbd_session *sess, int bit)
71 {
72 sess->flags |= bit;
73 }
74
clear_session_flag(struct ksmbd_session * sess,int bit)75 static inline void clear_session_flag(struct ksmbd_session *sess, int bit)
76 {
77 sess->flags &= ~bit;
78 }
79
80 struct ksmbd_session *ksmbd_smb2_session_create(void);
81
82 void ksmbd_session_destroy(struct ksmbd_session *sess);
83
84 struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id);
85 struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
86 unsigned long long id);
87 void ksmbd_session_register(struct ksmbd_conn *conn,
88 struct ksmbd_session *sess);
89 void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
90 struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,
91 unsigned long long id);
92 struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn,
93 u64 sess_id);
94 struct preauth_session *ksmbd_preauth_session_lookup(struct ksmbd_conn *conn,
95 unsigned long long id);
96
97 int ksmbd_acquire_tree_conn_id(struct ksmbd_session *sess);
98 void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id);
99
100 int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name);
101 void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id);
102 int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id);
103 int get_session(struct ksmbd_session *sess);
104 void put_session(struct ksmbd_session *sess);
105 #endif /* __USER_SESSION_MANAGEMENT_H__ */
106