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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2018 Samsung Electronics Co., Ltd.
*/
#ifndef __USER_SESSION_MANAGEMENT_H__
#define __USER_SESSION_MANAGEMENT_H__
#include <linux/hashtable.h>
#include <linux/xarray.h>
#include "../smb_common.h"
#include "../ntlmssp.h"
#define CIFDS_SESSION_FLAG_SMB2 BIT(1)
#define PREAUTH_HASHVALUE_SIZE 64
struct ksmbd_file_table;
struct channel {
char sess_key[CIFS_KEY_SIZE];
__u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
struct ksmbd_conn *conn;
};
struct preauth_session {
__u8 Preauth_HashValue[PREAUTH_HASHVALUE_SIZE];
u64 id;
struct list_head preauth_entry;
};
struct ksmbd_session {
u64 id;
__u16 dialect;
char ClientGUID[SMB2_CLIENT_GUID_SIZE];
struct ksmbd_user *user;
unsigned int sequence_number;
unsigned int flags;
bool sign;
bool enc;
bool tearing_down;
int state;
__u8 *Preauth_HashValue;
char sess_key[CIFS_KEY_SIZE];
u64 kerberos_expiry;
struct hlist_node hlist;
struct rw_semaphore chann_lock;
struct xarray ksmbd_chann_list;
struct xarray tree_conns;
struct ida tree_conn_ida;
struct xarray rpc_handle_list;
__u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE];
__u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE];
__u8 smb3signingkey[SMB3_SIGN_KEY_SIZE];
struct ksmbd_file_table file_table;
unsigned long last_active;
struct rw_semaphore tree_conns_lock;
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_entry;
#endif
atomic_t refcnt;
struct rw_semaphore rpc_lock;
};
#define KSMBD_MAX_CHANNELS 32
static inline int test_session_flag(struct ksmbd_session *sess, int bit)
{
return sess->flags & bit;
}
static inline void set_session_flag(struct ksmbd_session *sess, int bit)
{
sess->flags |= bit;
}
static inline void clear_session_flag(struct ksmbd_session *sess, int bit)
{
sess->flags &= ~bit;
}
struct ksmbd_session *ksmbd_smb2_session_create(void);
void ksmbd_session_destroy(struct ksmbd_session *sess);
struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id);
struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
unsigned long long id);
bool is_ksmbd_session_in_connection(struct ksmbd_conn *conn,
unsigned long long id);
int ksmbd_session_register(struct ksmbd_conn *conn,
struct ksmbd_session *sess);
void ksmbd_session_unregister(struct ksmbd_conn *conn,
struct ksmbd_session *sess);
void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
bool ksmbd_conn_has_valid_or_expired_session(struct ksmbd_conn *conn);
void ksmbd_expire_sessions(void);
struct ksmbd_session *__session_lookup(unsigned long long id);
struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,
unsigned long long id);
struct ksmbd_session *ksmbd_session_lookup_all_states(struct ksmbd_conn *conn,
unsigned long long id);
void destroy_previous_session(struct ksmbd_conn *conn,
struct ksmbd_user *user, u64 id);
struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn,
u64 sess_id);
void ksmbd_preauth_session_destroy(struct ksmbd_conn *conn);
struct preauth_session *ksmbd_preauth_session_lookup(struct ksmbd_conn *conn,
unsigned long long id);
int ksmbd_acquire_tree_conn_id(struct ksmbd_session *sess);
void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id);
int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name);
void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id);
int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id);
void ksmbd_user_session_get(struct ksmbd_session *sess);
void ksmbd_user_session_put(struct ksmbd_session *sess);
int create_proc_sessions(void);
#endif /* __USER_SESSION_MANAGEMENT_H__ */
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