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 };
25
26 struct preauth_session {
27 __u8 Preauth_HashValue[PREAUTH_HASHVALUE_SIZE];
28 u64 id;
29 struct list_head preauth_entry;
30 };
31
32 struct ksmbd_session {
33 u64 id;
34
35 __u16 dialect;
36 char ClientGUID[SMB2_CLIENT_GUID_SIZE];
37
38 struct ksmbd_user *user;
39 unsigned int sequence_number;
40 unsigned int flags;
41
42 bool sign;
43 bool enc;
44 bool is_anonymous;
45
46 int state;
47 __u8 *Preauth_HashValue;
48
49 char sess_key[CIFS_KEY_SIZE];
50
51 struct hlist_node hlist;
52 struct xarray ksmbd_chann_list;
53 struct xarray tree_conns;
54 struct ida tree_conn_ida;
55 struct xarray rpc_handle_list;
56
57 __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE];
58 __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE];
59 __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
60
61 struct ksmbd_file_table file_table;
62 unsigned long last_active;
63 rwlock_t tree_conns_lock;
64
65 atomic_t refcnt;
66 };
67
test_session_flag(struct ksmbd_session * sess,int bit)68 static inline int test_session_flag(struct ksmbd_session *sess, int bit)
69 {
70 return sess->flags & bit;
71 }
72
set_session_flag(struct ksmbd_session * sess,int bit)73 static inline void set_session_flag(struct ksmbd_session *sess, int bit)
74 {
75 sess->flags |= bit;
76 }
77
clear_session_flag(struct ksmbd_session * sess,int bit)78 static inline void clear_session_flag(struct ksmbd_session *sess, int bit)
79 {
80 sess->flags &= ~bit;
81 }
82
83 struct ksmbd_session *ksmbd_smb2_session_create(void);
84
85 void ksmbd_session_destroy(struct ksmbd_session *sess);
86
87 struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id);
88 struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
89 unsigned long long id);
90 int ksmbd_session_register(struct ksmbd_conn *conn,
91 struct ksmbd_session *sess);
92 void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
93 struct ksmbd_session *__session_lookup(unsigned long long id);
94 struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,
95 unsigned long long id);
96 void destroy_previous_session(struct ksmbd_conn *conn,
97 struct ksmbd_user *user, u64 id);
98 struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn,
99 u64 sess_id);
100 struct preauth_session *ksmbd_preauth_session_lookup(struct ksmbd_conn *conn,
101 unsigned long long id);
102
103 int ksmbd_acquire_tree_conn_id(struct ksmbd_session *sess);
104 void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id);
105
106 int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name);
107 void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id);
108 int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id);
109 void ksmbd_user_session_get(struct ksmbd_session *sess);
110 void ksmbd_user_session_put(struct ksmbd_session *sess);
111 #endif /* __USER_SESSION_MANAGEMENT_H__ */
112