source/include/util_tdb.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3    tdb utility functions
   4    Copyright (C) Andrew Tridgell 1999
   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 __TDBUTIL_H__
  21 #define __TDBUTIL_H__
  22
  23 #include "tdb.h"
  24
  25 #include "talloc.h" /* for tdb_wrap_open() */
  26 #include "nt_status.h" /* for map_nt_error_from_tdb() */
  27
  28 /* single node of a list returned by tdb_search_keys */
  29 typedef struct keys_node
  30 {
  31         struct keys_node *prev, *next;
  32         TDB_DATA node_key;
  33 } TDB_LIST_NODE;
  34
  35 struct tdb_wrap {
  36         struct tdb_context *tdb;
  37         const char *name;
  38         struct tdb_wrap *next, *prev;
  39 };
  40
  41 struct tdb_validation_status {
  42         bool tdb_error;
  43         bool bad_freelist;
  44         bool bad_entry;
  45         bool unknown_key;
  46         bool success;
  47 };
  48
  49 typedef int (*tdb_validate_data_func)(TDB_CONTEXT *the_tdb, TDB_DATA kbuf, TDB_DATA dbuf, void *state);
  50
  51 TDB_DATA make_tdb_data(const uint8 *dptr, size_t dsize);
  52 TDB_DATA string_tdb_data(const char *string);
  53 TDB_DATA string_term_tdb_data(const char *string);
  54
  55 TDB_LIST_NODE *tdb_search_keys(struct tdb_context*, const char*);
  56 void tdb_search_list_free(TDB_LIST_NODE*);
  57
  58 int tdb_chainlock_with_timeout( TDB_CONTEXT *tdb, TDB_DATA key,
  59                                 unsigned int timeout);
  60 int tdb_lock_bystring(struct tdb_context *tdb, const char *keyval);
  61 int tdb_lock_bystring_with_timeout(TDB_CONTEXT *tdb, const char *keyval,
  62                                    int timeout);
  63 void tdb_unlock_bystring(struct tdb_context *tdb, const char *keyval);
  64 int tdb_read_lock_bystring_with_timeout(TDB_CONTEXT *tdb, const char *keyval,
  65                                         unsigned int timeout);
  66 void tdb_read_unlock_bystring(TDB_CONTEXT *tdb, const char *keyval);
  67
  68 int32 tdb_fetch_int32_byblob(TDB_CONTEXT *tdb, TDB_DATA key);
  69 int32 tdb_fetch_int32(struct tdb_context *tdb, const char *keystr);
  70 bool tdb_store_uint32_byblob(TDB_CONTEXT *tdb, TDB_DATA key, uint32 value);
  71 bool tdb_store_uint32(struct tdb_context *tdb, const char *keystr, uint32 value);
  72 int tdb_store_int32_byblob(TDB_CONTEXT *tdb, TDB_DATA key, int32 v);
  73 int tdb_store_int32(struct tdb_context *tdb, const char *keystr, int32 v);
  74 bool tdb_fetch_uint32_byblob(TDB_CONTEXT *tdb, TDB_DATA key, uint32 *value);
  75 bool tdb_fetch_uint32(struct tdb_context *tdb, const char *keystr, uint32 *value);
  76 int32 tdb_change_int32_atomic(struct tdb_context *tdb, const char *keystr, int32 *oldval, int32 change_val);
  77 bool tdb_change_uint32_atomic(TDB_CONTEXT *tdb, const char *keystr,
  78                               uint32 *oldval, uint32 change_val);
  79
  80 int tdb_store_bystring(struct tdb_context *tdb, const char *keystr, TDB_DATA data, int flags);
  81 int tdb_trans_store_bystring(TDB_CONTEXT *tdb, const char *keystr,
  82                              TDB_DATA data, int flags);
  83 TDB_DATA tdb_fetch_bystring(struct tdb_context *tdb, const char *keystr);
  84 int tdb_delete_bystring(struct tdb_context *tdb, const char *keystr);
  85 int tdb_trans_store(struct tdb_context *tdb, TDB_DATA key, TDB_DATA dbuf,
  86                     int flag);
  87 int tdb_trans_delete(struct tdb_context *tdb, TDB_DATA key);
  88
  89 int tdb_unpack(const uint8 *buf, int bufsize, const char *fmt, ...);
  90 size_t tdb_pack(uint8 *buf, int bufsize, const char *fmt, ...);
  91 bool tdb_pack_append(TALLOC_CTX *mem_ctx, uint8 **buf, size_t *len,
  92                      const char *fmt, ...);
  93
  94 struct tdb_context *tdb_open_log(const char *name, int hash_size,
  95                                  int tdb_flags, int open_flags, mode_t mode);
  96
  97 struct tdb_wrap *tdb_wrap_open(TALLOC_CTX *mem_ctx,
  98                                const char *name, int hash_size, int tdb_flags,
  99                                int open_flags, mode_t mode);
 100
 101 NTSTATUS map_nt_error_from_tdb(enum TDB_ERROR err);
 102
 103 int tdb_validate(struct tdb_context *tdb, tdb_validate_data_func validate_fn);
 104 int tdb_validate_open(const char *tdb_path, tdb_validate_data_func validate_fn);
 105 int tdb_validate_and_backup(const char *tdb_path,
 106                             tdb_validate_data_func validate_fn);
 107
 108 #endif /* __TDBUTIL_H__ */