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
 19struct ksmbd_file_table;
 20
 21struct channel {
 22	__u8			smb3signingkey[SMB3_SIGN_KEY_SIZE];
 23	struct ksmbd_conn	*conn;
 24};
 25
 26struct preauth_session {
 27	__u8			Preauth_HashValue[PREAUTH_HASHVALUE_SIZE];
 28	u64			id;
 29	struct list_head	preauth_entry;
 30};
 31
 32struct 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
 66static inline int test_session_flag(struct ksmbd_session *sess, int bit)
 67{
 68	return sess->flags & bit;
 69}
 70
 71static inline void set_session_flag(struct ksmbd_session *sess, int bit)
 72{
 73	sess->flags |= bit;
 74}
 75
 76static inline void clear_session_flag(struct ksmbd_session *sess, int bit)
 77{
 78	sess->flags &= ~bit;
 79}
 80
 81struct ksmbd_session *ksmbd_smb2_session_create(void);
 82
 83void ksmbd_session_destroy(struct ksmbd_session *sess);
 84
 85struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id);
 86struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
 87					   unsigned long long id);
 88int ksmbd_session_register(struct ksmbd_conn *conn,
 89			   struct ksmbd_session *sess);
 90void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
 91struct ksmbd_session *__session_lookup(unsigned long long id);
 92struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,
 93					       unsigned long long id);
 94void destroy_previous_session(struct ksmbd_conn *conn,
 95			      struct ksmbd_user *user, u64 id);
 96struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn,
 97						    u64 sess_id);
 98struct preauth_session *ksmbd_preauth_session_lookup(struct ksmbd_conn *conn,
 99						     unsigned long long id);
100
101int ksmbd_acquire_tree_conn_id(struct ksmbd_session *sess);
102void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id);
103
104int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name);
105void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id);
106int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id);
107#endif /* __USER_SESSION_MANAGEMENT_H__ */