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