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 char sess_key[CIFS_KEY_SIZE]; 23 __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; 24 struct ksmbd_conn *conn; 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 __u16 dialect; 37 char ClientGUID[SMB2_CLIENT_GUID_SIZE]; 38 39 struct ksmbd_user *user; 40 unsigned int sequence_number; 41 unsigned int flags; 42 43 bool sign; 44 bool enc; 45 46 int state; 47 __u8 *Preauth_HashValue; 48 49 char sess_key[CIFS_KEY_SIZE]; 50 51 struct hlist_node hlist; 52 struct rw_semaphore chann_lock; 53 struct xarray ksmbd_chann_list; 54 struct xarray tree_conns; 55 struct ida tree_conn_ida; 56 struct xarray rpc_handle_list; 57 58 __u8 smb3encryptionkey[SMB3_ENC_DEC_KEY_SIZE]; 59 __u8 smb3decryptionkey[SMB3_ENC_DEC_KEY_SIZE]; 60 __u8 smb3signingkey[SMB3_SIGN_KEY_SIZE]; 61 62 struct ksmbd_file_table file_table; 63 unsigned long last_active; 64 struct rw_semaphore tree_conns_lock; 65 66 #ifdef CONFIG_PROC_FS 67 struct proc_dir_entry *proc_entry; 68 #endif 69 atomic_t refcnt; 70 struct rw_semaphore rpc_lock; 71 }; 72 73 static inline int test_session_flag(struct ksmbd_session *sess, int bit) 74 { 75 return sess->flags & bit; 76 } 77 78 static inline void set_session_flag(struct ksmbd_session *sess, int bit) 79 { 80 sess->flags |= bit; 81 } 82 83 static inline void clear_session_flag(struct ksmbd_session *sess, int bit) 84 { 85 sess->flags &= ~bit; 86 } 87 88 struct ksmbd_session *ksmbd_smb2_session_create(void); 89 90 void ksmbd_session_destroy(struct ksmbd_session *sess); 91 92 struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id); 93 struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn, 94 unsigned long long id); 95 bool is_ksmbd_session_in_connection(struct ksmbd_conn *conn, 96 unsigned long long id); 97 int ksmbd_session_register(struct ksmbd_conn *conn, 98 struct ksmbd_session *sess); 99 void ksmbd_sessions_deregister(struct ksmbd_conn *conn); 100 struct ksmbd_session *__session_lookup(unsigned long long id); 101 struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn, 102 unsigned long long id); 103 void destroy_previous_session(struct ksmbd_conn *conn, 104 struct ksmbd_user *user, u64 id); 105 struct preauth_session *ksmbd_preauth_session_alloc(struct ksmbd_conn *conn, 106 u64 sess_id); 107 struct preauth_session *ksmbd_preauth_session_lookup(struct ksmbd_conn *conn, 108 unsigned long long id); 109 110 int ksmbd_acquire_tree_conn_id(struct ksmbd_session *sess); 111 void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id); 112 113 int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name); 114 void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id); 115 int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id); 116 void ksmbd_user_session_get(struct ksmbd_session *sess); 117 void ksmbd_user_session_put(struct ksmbd_session *sess); 118 int create_proc_sessions(void); 119 #endif /* __USER_SESSION_MANAGEMENT_H__ */ 120