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/>.
27 the purpose of this code is to work around the braindead posix locking
28 rules, to allow us to have a ldb open more than once while allowing
33 struct ltdb_wrap *next, *prev;
34 struct tdb_context *tdb;
39 static struct ltdb_wrap *tdb_list;
41 /* destroy the last connection to a tdb */
42 static int ltdb_wrap_destructor(struct ltdb_wrap *w)
46 w->next->prev = w->prev;
49 w->prev->next = w->next;
57 static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
58 static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...)
61 const char *name = tdb_name(tdb);
62 struct ldb_context *ldb = talloc_get_type(tdb_get_logging_private(tdb), struct ldb_context);
63 enum ldb_debug_level ldb_level;
70 message = talloc_vasprintf(ldb, fmt, ap);
75 ldb_level = LDB_DEBUG_FATAL;
78 ldb_level = LDB_DEBUG_ERROR;
80 case TDB_DEBUG_WARNING:
81 ldb_level = LDB_DEBUG_WARNING;
84 ldb_level = LDB_DEBUG_TRACE;
87 ldb_level = LDB_DEBUG_FATAL;
90 ldb_debug(ldb, ldb_level, "ltdb: tdb(%s): %s", name, message);
95 wrapped connection to a tdb database. The caller should _not_ free
96 this as it is not a talloc structure (as tdb does not use talloc
97 yet). It will auto-close when the caller frees the mem_ctx that is
100 struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx,
101 const char *path, int hash_size,
103 int open_flags, mode_t mode,
104 struct ldb_context *ldb)
108 struct tdb_logging_context log_ctx;
110 log_ctx.log_fn = ltdb_log_fn;
111 log_ctx.log_private = ldb;
113 if (stat(path, &st) == 0) {
114 for (w=tdb_list;w;w=w->next) {
115 if (st.st_dev == w->device && st.st_ino == w->inode) {
116 if (!talloc_reference(mem_ctx, w)) {
124 w = talloc(mem_ctx, struct ltdb_wrap);
129 w->tdb = tdb_open_ex(path, hash_size, tdb_flags, open_flags, mode, &log_ctx, NULL);
130 if (w->tdb == NULL) {
135 if (fstat(tdb_fd(w->tdb), &st) != 0) {
141 w->device = st.st_dev;
142 w->inode = st.st_ino;
144 talloc_set_destructor(w, ltdb_wrap_destructor);