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Copyright (C) Andrew Tridgell 2005
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** NOTE! The following LGPL license applies to the ldb
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** library. This does NOT imply that all of Samba is released
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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#include "ldb/include/includes.h"
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#include "ldb/ldb_tdb/ldb_tdb.h"
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the purpose of this code is to work around the braindead posix locking
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rules, to allow us to have a ldb open more than once while allowing
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struct ltdb_wrap *next, *prev;
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struct tdb_context *tdb;
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static struct ltdb_wrap *tdb_list;
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/* destroy the last connection to a tdb */
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static int ltdb_wrap_destructor(struct ltdb_wrap *w)
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w->next->prev = w->prev;
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w->prev->next = w->next;
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static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...) PRINTF_ATTRIBUTE(3, 4);
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static void ltdb_log_fn(struct tdb_context *tdb, enum tdb_debug_level level, const char *fmt, ...)
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const char *name = tdb_name(tdb);
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struct ldb_context *ldb = talloc_get_type(tdb_get_logging_private(tdb), struct ldb_context);
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enum ldb_debug_level ldb_level;
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message = talloc_vasprintf(ldb, fmt, ap);
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ldb_level = LDB_DEBUG_FATAL;
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ldb_level = LDB_DEBUG_ERROR;
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case TDB_DEBUG_WARNING:
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ldb_level = LDB_DEBUG_WARNING;
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ldb_level = LDB_DEBUG_TRACE;
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ldb_level = LDB_DEBUG_FATAL;
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ldb_debug(ldb, ldb_level, "ltdb: tdb(%s): %s", name, message);
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wrapped connection to a tdb database. The caller should _not_ free
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this as it is not a talloc structure (as tdb does not use talloc
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yet). It will auto-close when the caller frees the mem_ctx that is
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struct tdb_context *ltdb_wrap_open(TALLOC_CTX *mem_ctx,
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const char *path, int hash_size,
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int open_flags, mode_t mode,
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struct ldb_context *ldb)
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struct tdb_logging_context log_ctx;
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log_ctx.log_fn = ltdb_log_fn;
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log_ctx.log_private = ldb;
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if (stat(path, &st) == 0) {
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for (w=tdb_list;w;w=w->next) {
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if (st.st_dev == w->device && st.st_ino == w->inode) {
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if (!talloc_reference(mem_ctx, w)) {
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w = talloc(mem_ctx, struct ltdb_wrap);
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w->tdb = tdb_open_ex(path, hash_size, tdb_flags, open_flags, mode, &log_ctx, NULL);
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if (w->tdb == NULL) {
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if (fstat(tdb_fd(w->tdb), &st) != 0) {
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w->device = st.st_dev;
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w->inode = st.st_ino;
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talloc_set_destructor(w, ltdb_wrap_destructor);