fs/smb/server/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 };
  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
  68 static inline int test_session_flag(struct ksmbd_session *sess, int bit)
  69 {
  70         return sess->flags & bit;
  71 }
  72
  73 static inline void set_session_flag(struct ksmbd_session *sess, int bit)
  74 {
  75         sess->flags |= bit;
  76 }
  77
  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__ */