source3/include/serverid.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Implementation of a reliable server_exists()
   4    Copyright (C) Volker Lendecke 2010
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #ifndef __SERVERID_H__
  21 #define __SERVERID_H__
  22
  23 #include "includes.h"
  24
  25 /** Don't verify this unique id */
  26 #define SERVERID_UNIQUE_ID_NOT_TO_VERIFY 0xFFFFFFFFFFFFFFFFULL
  27
  28 /*
  29  * Register a server with its unique id
  30  */
  31 bool serverid_register(const struct server_id id, uint32_t msg_flags);
  32
  33 /*
  34  * De-register a server with its unique id
  35  */
  36 bool serverid_deregister(const struct server_id id);
  37
  38 /*
  39  * (De)register additional message flags
  40  */
  41 bool serverid_register_msg_flags(const struct server_id id, bool do_reg,
  42                                  uint32_t msg_flags);
  43
  44 /*
  45  * Check existence of a server id
  46  */
  47 bool serverid_exists(const struct server_id *id);
  48
  49 /*
  50  * Walk the list of server_ids registered
  51  */
  52 bool serverid_traverse(int (*fn)(struct db_record *rec,
  53                                  const struct server_id *id,
  54                                  uint32_t msg_flags,
  55                                  void *private_data),
  56                        void *private_data);
  57
  58 /*
  59  * Walk the list of server_ids registered read-only
  60  */
  61 bool serverid_traverse_read(int (*fn)(const struct server_id *id,
  62                                       uint32_t msg_flags,
  63                                       void *private_data),
  64                             void *private_data);
  65 /*
  66  * Ensure CLEAR_IF_FIRST works fine, to be called from the parent smbd
  67  */
  68 bool serverid_parent_init(TALLOC_CTX *mem_ctx);
  69
  70 /*
  71  * Get a random unique_id and make sure that it is not
  72  * SERVERID_UNIQUE_ID_NOT_TO_VERIFY
  73  */
  74 uint64_t serverid_get_random_unique_id(void);
  75
  76 bool serverid_init_readonly(TALLOC_CTX *mem_ctx);
  77
  78 #endif