From ca0b72a1fdb7bd965065e833df34662afef0423e Mon Sep 17 00:00:00 2001
From: Jelmer Vernooij <jelmer@samba.org>
Date: Fri, 16 Nov 2007 20:12:00 +0100
Subject: r26003: Split up DB_WRAP, as first step in an attempt to sanitize
 dependencies. (This used to be commit
 56dfcb4f2f8e74c9d8b2fe3a0df043781188a555)

---
 source4/lib/tdb_wrap.c | 117 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 source4/lib/tdb_wrap.c

(limited to 'source4/lib/tdb_wrap.c')

diff --git a/source4/lib/tdb_wrap.c b/source4/lib/tdb_wrap.c
new file mode 100644
index 0000000000..37095dff2c
--- /dev/null
+++ b/source4/lib/tdb_wrap.c
@@ -0,0 +1,117 @@
+/* 
+   Unix SMB/CIFS implementation.
+   TDB wrap functions
+
+   Copyright (C) Andrew Tridgell 2004
+   Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "lib/tdb/include/tdb.h"
+#include "lib/util/dlinklist.h"
+#include "tdb_wrap.h"
+#include "tdb.h"
+
+static struct tdb_wrap *tdb_list;
+
+/* destroy the last connection to a tdb */
+static int tdb_wrap_destructor(struct tdb_wrap *w)
+{
+	tdb_close(w->tdb);
+	DLIST_REMOVE(tdb_list, w);
+	return 0;
+}				 
+
+/*
+ Log tdb messages via DEBUG().
+*/
+static void tdb_wrap_log(TDB_CONTEXT *tdb, enum tdb_debug_level level, 
+			 const char *format, ...) PRINTF_ATTRIBUTE(3,4);
+
+static void tdb_wrap_log(TDB_CONTEXT *tdb, enum tdb_debug_level level, 
+			 const char *format, ...)
+{
+	va_list ap;
+	char *ptr = NULL;
+	int debug_level;
+
+	va_start(ap, format);
+	vasprintf(&ptr, format, ap);
+	va_end(ap);
+	
+	switch (level) {
+	case TDB_DEBUG_FATAL:
+		debug_level = 0;
+		break;
+	case TDB_DEBUG_ERROR:
+		debug_level = 1;
+		break;
+	case TDB_DEBUG_WARNING:
+		debug_level = 2;
+		break;
+	case TDB_DEBUG_TRACE:
+		debug_level = 5;
+		break;
+	default:
+		debug_level = 0;
+	}		
+
+	if (ptr != NULL) {
+		const char *name = tdb_name(tdb);
+		DEBUG(debug_level, ("tdb(%s): %s", name ? name : "unnamed", ptr));
+		free(ptr);
+	}
+}
+
+
+/*
+  wrapped connection to a tdb database
+  to close just talloc_free() the tdb_wrap pointer
+ */
+struct tdb_wrap *tdb_wrap_open(TALLOC_CTX *mem_ctx,
+			       const char *name, int hash_size, int tdb_flags,
+			       int open_flags, mode_t mode)
+{
+	struct tdb_wrap *w;
+	struct tdb_logging_context log_ctx;
+	log_ctx.log_fn = tdb_wrap_log;
+
+	for (w=tdb_list;w;w=w->next) {
+		if (strcmp(name, w->name) == 0) {
+			return talloc_reference(mem_ctx, w);
+		}
+	}
+
+	w = talloc(mem_ctx, struct tdb_wrap);
+	if (w == NULL) {
+		return NULL;
+	}
+
+	w->name = talloc_strdup(w, name);
+
+	w->tdb = tdb_open_ex(name, hash_size, tdb_flags, 
+			     open_flags, mode, &log_ctx, NULL);
+	if (w->tdb == NULL) {
+		talloc_free(w);
+		return NULL;
+	}
+
+	talloc_set_destructor(w, tdb_wrap_destructor);
+
+	DLIST_ADD(tdb_list, w);
+
+	return w;
+}
-- 
cgit