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/>.
24 #include "ldb_includes.h"
29 the purpose of this code is to work around the braindead posix locking
30 rules, to allow us to have a ldb open more than once while allowing
35 struct ltdb_wrap *next, *prev;
36 struct tdb_context *tdb;
41 static struct ltdb_wrap *tdb_list;
43 /* destroy the last connection to a tdb */
44 static int ltdb_wrap_destructor(struct ltdb_wrap *w)
48 w->next->prev = w->prev;
51 w->prev->next = w->next;
59 static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
60 static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...)
63 const char *name = tdb_name(tdb);
64 struct ldb_context *ldb = talloc_get_type(tdb_get_logging_private(tdb), struct ldb_context);
65 enum ldb_debug_level ldb_level;
72 message = talloc_vasprintf(ldb, fmt, ap);
77 ldb_level = LDB_DEBUG_FATAL;
80 ldb_level = LDB_DEBUG_ERROR;
82 case TDB_DEBUG_WARNING:
83 ldb_level = LDB_DEBUG_WARNING;
86 ldb_level = LDB_DEBUG_TRACE;
89 ldb_level = LDB_DEBUG_FATAL;
92 ldb_debug(ldb, ldb_level, "ltdb: tdb(%s): %s", name, message);
97 wrapped connection to a tdb database. The caller should _not_ free
98 this as it is not a talloc structure (as tdb does not use talloc
99 yet). It will auto-close when the caller frees the mem_ctx that is
102 struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx,
103 const char *path, int hash_size,
105 int open_flags, mode_t mode,
106 struct ldb_context *ldb)
110 struct tdb_logging_context log_ctx;
112 log_ctx.log_fn = ltdb_log_fn;
113 log_ctx.log_private = ldb;
115 if (stat(path, &st) == 0) {
116 for (w=tdb_list;w;w=w->next) {
117 if (st.st_dev == w->device && st.st_ino == w->inode) {
118 if (!talloc_reference(mem_ctx, w)) {
126 w = talloc(mem_ctx, struct ltdb_wrap);
131 w->tdb = tdb_open_ex(path, hash_size, tdb_flags, open_flags, mode, &log_ctx, NULL);
132 if (w->tdb == NULL) {
137 if (fstat(tdb_fd(w->tdb), &st) != 0) {
143 w->device = st.st_dev;
144 w->inode = st.st_ino;
146 talloc_set_destructor(w, ltdb_wrap_destructor);