source3/include/dbwrap.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Database interface wrapper around tdb
   4    Copyright (C) Volker Lendecke 2005-2007
   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 __DBWRAP_H__
  21 #define __DBWRAP_H__
  22
  23 #include <tdb.h>
  24
  25 struct db_record {
  26         TDB_DATA key, value;
  27         NTSTATUS (*store)(struct db_record *rec, TDB_DATA data, int flag);
  28         NTSTATUS (*delete_rec)(struct db_record *rec);
  29         void *private_data;
  30 };
  31
  32 struct db_context {
  33         struct db_record *(*fetch_locked)(struct db_context *db,
  34                                           TALLOC_CTX *mem_ctx,
  35                                           TDB_DATA key);
  36         int (*fetch)(struct db_context *db, TALLOC_CTX *mem_ctx,
  37                      TDB_DATA key, TDB_DATA *data);
  38         int (*traverse)(struct db_context *db,
  39                         int (*f)(struct db_record *rec,
  40                                  void *private_data),
  41                         void *private_data);
  42         int (*traverse_read)(struct db_context *db,
  43                              int (*f)(struct db_record *rec,
  44                                       void *private_data),
  45                              void *private_data);
  46         int (*get_seqnum)(struct db_context *db);
  47         int (*get_flags)(struct db_context *db);
  48         int (*transaction_start)(struct db_context *db);
  49         int (*transaction_commit)(struct db_context *db);
  50         int (*transaction_cancel)(struct db_context *db);
  51         int (*parse_record)(struct db_context *db, TDB_DATA key,
  52                             int (*parser)(TDB_DATA key, TDB_DATA data,
  53                                           void *private_data),
  54                             void *private_data);
  55         void *private_data;
  56         bool persistent;
  57 };
  58
  59 bool db_is_local(const char *name);
  60
  61 struct db_context *db_open(TALLOC_CTX *mem_ctx,
  62                            const char *name,
  63                            int hash_size, int tdb_flags,
  64                            int open_flags, mode_t mode);
  65
  66 struct db_context *db_open_rbt(TALLOC_CTX *mem_ctx);
  67
  68 struct db_context *db_open_tdb(TALLOC_CTX *mem_ctx,
  69                                const char *name,
  70                                int hash_size, int tdb_flags,
  71                                int open_flags, mode_t mode);
  72
  73 struct messaging_context;
  74
  75 #ifdef CLUSTER_SUPPORT
  76 struct db_context *db_open_ctdb(TALLOC_CTX *mem_ctx,
  77                                 const char *name,
  78                                 int hash_size, int tdb_flags,
  79                                 int open_flags, mode_t mode);
  80 #endif
  81
  82 struct db_context *db_open_file(TALLOC_CTX *mem_ctx,
  83                                 struct messaging_context *msg_ctx,
  84                                 const char *name,
  85                                 int hash_size, int tdb_flags,
  86                                 int open_flags, mode_t mode);
  87
  88
  89 NTSTATUS dbwrap_delete(struct db_context *db, TDB_DATA key);
  90 NTSTATUS dbwrap_store(struct db_context *db, TDB_DATA key,
  91                       TDB_DATA data, int flags);
  92 TDB_DATA dbwrap_fetch(struct db_context *db, TALLOC_CTX *mem_ctx,
  93                       TDB_DATA key);
  94 NTSTATUS dbwrap_delete_bystring(struct db_context *db, const char *key);
  95 NTSTATUS dbwrap_store_bystring(struct db_context *db, const char *key,
  96                                TDB_DATA data, int flags);
  97 TDB_DATA dbwrap_fetch_bystring(struct db_context *db, TALLOC_CTX *mem_ctx,
  98                                const char *key);
  99
 100 /* The following definitions come from lib/dbwrap_util.c  */
 101
 102 int32_t dbwrap_fetch_int32(struct db_context *db, const char *keystr);
 103 int dbwrap_store_int32(struct db_context *db, const char *keystr, int32_t v);
 104 bool dbwrap_fetch_uint32(struct db_context *db, const char *keystr,
 105                          uint32_t *val);
 106 int dbwrap_store_uint32(struct db_context *db, const char *keystr, uint32_t v);
 107 NTSTATUS dbwrap_change_uint32_atomic(struct db_context *db, const char *keystr,
 108                                      uint32_t *oldval, uint32_t change_val);
 109 NTSTATUS dbwrap_trans_change_uint32_atomic(struct db_context *db,
 110                                            const char *keystr,
 111                                            uint32_t *oldval,
 112                                            uint32_t change_val);
 113 NTSTATUS dbwrap_change_int32_atomic(struct db_context *db, const char *keystr,
 114                                     int32_t *oldval, int32_t change_val);
 115 NTSTATUS dbwrap_trans_change_int32_atomic(struct db_context *db,
 116                                           const char *keystr,
 117                                           int32_t *oldval,
 118                                           int32_t change_val);
 119 NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
 120                             int flag);
 121 NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key);
 122 NTSTATUS dbwrap_trans_store_int32(struct db_context *db, const char *keystr,
 123                                   int32_t v);
 124 NTSTATUS dbwrap_trans_store_uint32(struct db_context *db, const char *keystr,
 125                                    uint32_t v);
 126 NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
 127                                      TDB_DATA data, int flags);
 128 NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key);
 129 NTSTATUS dbwrap_trans_do(struct db_context *db,
 130                          NTSTATUS (*action)(struct db_context *, void *),
 131                          void *private_data);
 132 NTSTATUS dbwrap_trans_traverse(struct db_context *db,
 133                                int (*f)(struct db_record*, void*),
 134                                void *private_data);
 135 NTSTATUS dbwrap_traverse(struct db_context *db,
 136                          int (*f)(struct db_record*, void*),
 137                          void *private_data,
 138                          int *count);
 139
 140 NTSTATUS dbwrap_delete_bystring_upper(struct db_context *db, const char *key);
 141 NTSTATUS dbwrap_store_bystring_upper(struct db_context *db, const char *key,
 142                                      TDB_DATA data, int flags);
 143 TDB_DATA dbwrap_fetch_bystring_upper(struct db_context *db, TALLOC_CTX *mem_ctx,
 144                                      const char *key);
 145
 146 #endif /* __DBWRAP_H__ */