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 2 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, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include "ldb/include/ldb.h"
27 #include "ldb/include/ldb_private.h"
28 #include "ldb/ldb_tdb/ldb_tdb.h"
31 the purpose of this code is to work around the braindead posix locking
32 rules, to allow us to have a ldb open more than once while allowing
37 struct ltdb_wrap *next, *prev;
38 struct tdb_context *tdb;
43 static struct ltdb_wrap *tdb_list;
45 /* destroy the last connection to a tdb */
46 static int ltdb_wrap_destructor(void *ctx)
48 struct ltdb_wrap *w = talloc_get_type(ctx, struct ltdb_wrap);
51 w->next->prev = w->prev;
54 w->prev->next = w->next;
63 wrapped connection to a tdb database. The caller should _not_ free
64 this as it is not a talloc structure (as tdb does not use talloc
65 yet). It will auto-close when the caller frees the mem_ctx that is
68 struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx,
69 const char *path, int hash_size, int tdb_flags,
70 int open_flags, mode_t mode)
75 if (stat(path, &st) == 0) {
76 for (w=tdb_list;w;w=w->next) {
77 if (st.st_dev == w->device && st.st_ino == w->inode) {
78 talloc_reference(mem_ctx, w);
84 w = talloc(mem_ctx, struct ltdb_wrap);
89 w->tdb = tdb_open(path, hash_size, tdb_flags, open_flags, mode);
95 if (fstat(tdb_fd(w->tdb), &st) != 0) {
101 w->device = st.st_dev;
102 w->inode = st.st_ino;
104 talloc_set_destructor(w, ltdb_wrap_destructor);