lib/dbwrap/dbwrap_local_open.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Database interface wrapper: local open code.
   4
   5    Copyright (C) Rusty Russell 2012
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "dbwrap/dbwrap.h"
  23 #include "dbwrap/dbwrap_tdb.h"
  24 #include "tdb.h"
  25 #ifndef DISABLE_NTDB
  26 #include "lib/util/util_ntdb.h"
  27 #endif
  28 #include "lib/param/param.h"
  29 #include "system/filesys.h"
  30 #include "ccan/str/str.h"
  31
  32 struct db_context *dbwrap_local_open(TALLOC_CTX *mem_ctx,
  33                                      struct loadparm_context *lp_ctx,
  34                                      const char *name,
  35                                      int hash_size, int tdb_flags,
  36                                      int open_flags, mode_t mode,
  37                                      enum dbwrap_lock_order lock_order)
  38 {
  39         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
  40         const char *ntdbname, *tdbname;
  41         struct db_context *db = NULL;
  42
  43         /* Get both .ntdb and .tdb variants of the name. */
  44         if (!name) {
  45                 tdbname = ntdbname = "unnamed database";
  46         } else if (strends(name, ".tdb")) {
  47                 tdbname = name;
  48                 ntdbname = talloc_asprintf(tmp_ctx,
  49                                            "%.*s.ntdb",
  50                                            (int)strlen(name) - 4, name);
  51         } else if (strends(name, ".ntdb")) {
  52                 ntdbname = name;
  53                 tdbname = talloc_asprintf(tmp_ctx,
  54                                           "%.*s.tdb",
  55                                           (int)strlen(name) - 5, name);
  56         } else {
  57                 ntdbname = tdbname = name;
  58         }
  59
  60         if (ntdbname == NULL || tdbname == NULL) {
  61                 DEBUG(0, ("talloc failed\n"));
  62                 goto out;
  63         }
  64
  65         /* We currently always open a tdb, not an ntdb. */
  66         db = db_open_tdb(mem_ctx, lp_ctx, tdbname, hash_size,
  67                          tdb_flags, open_flags, mode,
  68                          lock_order);
  69 out:
  70         talloc_free(tmp_ctx);
  71         return db;
  72 }