lib/dbwrap/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 struct db_context;
  27
  28 enum dbwrap_lock_order {
  29         DBWRAP_LOCK_ORDER_1 = 1,
  30         DBWRAP_LOCK_ORDER_2 = 2,
  31         DBWRAP_LOCK_ORDER_3 = 3
  32 };
  33 #define DBWRAP_LOCK_ORDER_MAX DBWRAP_LOCK_ORDER_3
  34
  35 /* The following definitions come from lib/dbwrap.c  */
  36
  37 TDB_DATA dbwrap_record_get_key(const struct db_record *rec);
  38 TDB_DATA dbwrap_record_get_value(const struct db_record *rec);
  39 NTSTATUS dbwrap_record_store(struct db_record *rec, TDB_DATA data, int flags);
  40 NTSTATUS dbwrap_record_delete(struct db_record *rec);
  41 struct db_record *dbwrap_fetch_locked(struct db_context *db,
  42                                       TALLOC_CTX *mem_ctx,
  43                                       TDB_DATA key);
  44 struct db_record *dbwrap_try_fetch_locked(struct db_context *db,
  45                                           TALLOC_CTX *mem_ctx,
  46                                           TDB_DATA key);
  47 struct db_record *dbwrap_fetch_locked_timeout(struct db_context *db,
  48                                               TALLOC_CTX *mem_ctx,
  49                                               TDB_DATA key,
  50                                               unsigned int timeout);
  51
  52 struct db_context *dbwrap_record_get_db(struct db_record *rec);
  53 void dbwrap_set_stored_callback(
  54         struct db_context *db,
  55         void (*cb)(struct db_context *db, struct db_record *rec,
  56                    void *private_data),
  57         void *private_data);
  58
  59 NTSTATUS dbwrap_delete(struct db_context *db, TDB_DATA key);
  60 NTSTATUS dbwrap_store(struct db_context *db, TDB_DATA key,
  61                       TDB_DATA data, int flags);
  62 NTSTATUS dbwrap_fetch(struct db_context *db, TALLOC_CTX *mem_ctx,
  63                       TDB_DATA key, TDB_DATA *value);
  64 bool dbwrap_exists(struct db_context *db, TDB_DATA key);
  65 NTSTATUS dbwrap_traverse(struct db_context *db,
  66                          int (*f)(struct db_record*, void*),
  67                          void *private_data,
  68                          int *count);
  69 NTSTATUS dbwrap_traverse_read(struct db_context *db,
  70                               int (*f)(struct db_record*, void*),
  71                               void *private_data,
  72                               int *count);
  73 NTSTATUS dbwrap_parse_record(struct db_context *db, TDB_DATA key,
  74                              void (*parser)(TDB_DATA key, TDB_DATA data,
  75                                             void *private_data),
  76                              void *private_data);
  77 int dbwrap_wipe(struct db_context *db);
  78 int dbwrap_check(struct db_context *db);
  79 int dbwrap_get_seqnum(struct db_context *db);
  80 /* Returns 0 if unknown. */
  81 int dbwrap_hash_size(struct db_context *db);
  82 int dbwrap_transaction_start(struct db_context *db);
  83 NTSTATUS dbwrap_transaction_start_nonblock(struct db_context *db);
  84 int dbwrap_transaction_commit(struct db_context *db);
  85 int dbwrap_transaction_cancel(struct db_context *db);
  86 void dbwrap_db_id(struct db_context *db, const uint8_t **id, size_t *idlen);
  87 bool dbwrap_is_persistent(struct db_context *db);
  88 const char *dbwrap_name(struct db_context *db);
  89
  90 /* The following definitions come from lib/dbwrap_util.c  */
  91
  92 NTSTATUS dbwrap_delete_bystring(struct db_context *db, const char *key);
  93 NTSTATUS dbwrap_store_bystring(struct db_context *db, const char *key,
  94                                TDB_DATA data, int flags);
  95 NTSTATUS dbwrap_fetch_bystring(struct db_context *db, TALLOC_CTX *mem_ctx,
  96                                const char *key, TDB_DATA *value);
  97
  98 NTSTATUS dbwrap_fetch_int32(struct db_context *db, TDB_DATA key,
  99                             int32_t *result);
 100 NTSTATUS dbwrap_fetch_int32_bystring(struct db_context *db, const char *keystr,
 101                                      int32_t *result);
 102 NTSTATUS dbwrap_store_int32_bystring(struct db_context *db, const char *keystr,
 103                                      int32_t v);
 104 NTSTATUS dbwrap_fetch_uint32_bystring(struct db_context *db,
 105                                       const char *keystr, uint32_t *val);
 106 NTSTATUS dbwrap_store_uint32_bystring(struct db_context *db,
 107                                       const char *keystr, uint32_t v);
 108 NTSTATUS dbwrap_change_uint32_atomic_bystring(struct db_context *db,
 109                                               const char *keystr,
 110                                               uint32_t *oldval,
 111                                               uint32_t change_val);
 112 NTSTATUS dbwrap_trans_change_uint32_atomic_bystring(struct db_context *db,
 113                                                     const char *keystr,
 114                                                     uint32_t *oldval,
 115                                                     uint32_t change_val);
 116 NTSTATUS dbwrap_change_int32_atomic(struct db_context *db,
 117                                     TDB_DATA key,
 118                                     int32_t *oldval,
 119                                     int32_t change_val);
 120 NTSTATUS dbwrap_change_int32_atomic_bystring(struct db_context *db,
 121                                              const char *keystr,
 122                                              int32_t *oldval,
 123                                              int32_t change_val);
 124 NTSTATUS dbwrap_trans_change_int32_atomic_bystring(struct db_context *db,
 125                                                    const char *keystr,
 126                                                    int32_t *oldval,
 127                                                    int32_t change_val);
 128 NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
 129                             int flag);
 130 NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key);
 131 NTSTATUS dbwrap_trans_store_int32_bystring(struct db_context *db,
 132                                            const char *keystr,
 133                                            int32_t v);
 134 NTSTATUS dbwrap_trans_store_uint32_bystring(struct db_context *db,
 135                                             const char *keystr,
 136                                             uint32_t v);
 137 NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
 138                                      TDB_DATA data, int flags);
 139 NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key);
 140 NTSTATUS dbwrap_trans_do(struct db_context *db,
 141                          NTSTATUS (*action)(struct db_context *, void *),
 142                          void *private_data);
 143 NTSTATUS dbwrap_trans_traverse(struct db_context *db,
 144                                int (*f)(struct db_record*, void*),
 145                                void *private_data);
 146
 147 NTSTATUS dbwrap_delete_bystring_upper(struct db_context *db, const char *key);
 148 NTSTATUS dbwrap_store_bystring_upper(struct db_context *db, const char *key,
 149                                      TDB_DATA data, int flags);
 150 NTSTATUS dbwrap_fetch_bystring_upper(struct db_context *db, TALLOC_CTX *mem_ctx,
 151                                      const char *key, TDB_DATA *value);
 152
 153 /**
 154  * This opens an ntdb or tdb file: you can hand it a .ntdb or .tdb extension
 155  * and it will decide (based on parameter settings, or else what exists) which
 156  * to use.
 157  *
 158  * For backwards compatibility, it takes tdb-style open flags, not ntdb!
 159  */
 160 struct db_context *dbwrap_local_open(TALLOC_CTX *mem_ctx,
 161                                      struct loadparm_context *lp_ctx,
 162                                      const char *name,
 163                                      int hash_size, int tdb_flags,
 164                                      int open_flags, mode_t mode,
 165                                      enum dbwrap_lock_order lock_order);
 166
 167 #endif /* __DBWRAP_H__ */