4 Copyright (C) Andrew Tridgell 2005
6 ** NOTE! The following LGPL license applies to the ldb
7 ** library. This does NOT imply that all of Samba is released
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 3 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public
21 License along with this library; if not, see <http://www.gnu.org/licenses/>.
25 #include "dlinklist.h"
27 static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
28 static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...)
31 const char *name = tdb_name(tdb);
32 struct ldb_context *ldb = talloc_get_type(tdb_get_logging_private(tdb), struct ldb_context);
33 enum ldb_debug_level ldb_level;
40 message = talloc_vasprintf(ldb, fmt, ap);
45 ldb_level = LDB_DEBUG_FATAL;
48 ldb_level = LDB_DEBUG_ERROR;
50 case TDB_DEBUG_WARNING:
51 ldb_level = LDB_DEBUG_WARNING;
54 ldb_level = LDB_DEBUG_TRACE;
57 ldb_level = LDB_DEBUG_FATAL;
60 ldb_debug(ldb, ldb_level, "ltdb: tdb(%s): %s", name, message);
65 the purpose of this code is to work around the braindead posix locking
66 rules, to allow us to have a ldb open more than once while allowing
69 TDB2 handles multiple opens, so we don't have this problem there.
73 struct ltdb_wrap *next, *prev;
74 struct tdb_context *tdb;
79 static struct ltdb_wrap *tdb_list;
81 /* destroy the last connection to a tdb */
82 static int ltdb_wrap_destructor(struct ltdb_wrap *w)
85 DLIST_REMOVE(tdb_list, w);
90 wrapped connection to a tdb database. The caller should _not_ free
91 this as it is not a talloc structure (as tdb does not use talloc
92 yet). It will auto-close when the caller frees the mem_ctx that is
95 struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx,
96 const char *path, int hash_size,
98 int open_flags, mode_t mode,
99 struct ldb_context *ldb)
104 if (stat(path, &st) == 0) {
105 for (w=tdb_list;w;w=w->next) {
106 if (st.st_dev == w->device && st.st_ino == w->inode) {
107 if (!talloc_reference(mem_ctx, w)) {
115 w = talloc(mem_ctx, struct ltdb_wrap);
120 w->tdb = tdb_open_compat(path, hash_size, tdb_flags, open_flags, mode, ltdb_log_fn, ldb);
121 if (w->tdb == NULL) {
126 if (fstat(tdb_fd(w->tdb), &st) != 0) {
132 w->device = st.st_dev;
133 w->inode = st.st_ino;
135 talloc_set_destructor(w, ltdb_wrap_destructor);
137 DLIST_ADD(tdb_list, w);