fs/cifsd/mgmt/user_session.h

   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                     sess_id;
  30         struct list_head        list_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         struct ntlmssp_auth             ntlmssp;
  49         char                            sess_key[CIFS_KEY_SIZE];
  50
  51         struct hlist_node               hlist;
  52         struct list_head                ksmbd_chann_list;
  53         struct xarray                   tree_conns;
  54         struct ida                      tree_conn_ida;
  55         struct list_head                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 list_head                sessions_entry;
  62         struct ksmbd_file_table         file_table;
  63         atomic_t                        refcnt;
  64 };
  65
  66 static inline int test_session_flag(struct ksmbd_session *sess, int bit)
  67 {
  68         return sess->flags & bit;
  69 }
  70
  71 static inline void set_session_flag(struct ksmbd_session *sess, int bit)
  72 {
  73         sess->flags |= bit;
  74 }
  75
  76 static inline void clear_session_flag(struct ksmbd_session *sess, int bit)
  77 {
  78         sess->flags &= ~bit;
  79 }
  80
  81 struct ksmbd_session *ksmbd_smb2_session_create(void);
  82
  83 void ksmbd_session_destroy(struct ksmbd_session *sess);
  84
  85 bool ksmbd_session_id_match(struct ksmbd_session *sess, unsigned long long id);
  86 struct ksmbd_session *ksmbd_session_lookup_slowpath(unsigned long long id);
  87 struct ksmbd_session *ksmbd_session_lookup(struct ksmbd_conn *conn,
  88                                            unsigned long long id);
  89 void ksmbd_session_register(struct ksmbd_conn *conn,
  90                             struct ksmbd_session *sess);
  91 void ksmbd_sessions_deregister(struct ksmbd_conn *conn);
  92
  93 int ksmbd_acquire_tree_conn_id(struct ksmbd_session *sess);
  94 void ksmbd_release_tree_conn_id(struct ksmbd_session *sess, int id);
  95
  96 int ksmbd_session_rpc_open(struct ksmbd_session *sess, char *rpc_name);
  97 void ksmbd_session_rpc_close(struct ksmbd_session *sess, int id);
  98 int ksmbd_session_rpc_method(struct ksmbd_session *sess, int id);
  99 int get_session(struct ksmbd_session *sess);
 100 void put_session(struct ksmbd_session *sess);
 101 #endif /* __USER_SESSION_MANAGEMENT_H__ */