lib/util: new merged debug system

This is the s3 debug system, with a number of changes to tidy it up
for common use.  The debug class system is simplified by the removal of the
ISSET table, the system no longer attempts to cope with assignment of
DEBUGLEVEL, and the full class table is always available (rather than
just DEBUGLEVEL_CLASS[DBCG_ALL]) from startup.  It is also no longer
confusingly described as a hack, but as the initial table.

Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Tue Mar  1 04:32:12 CET 2011 on sn-devel-104

1 files changed, 105 insertions, 0 deletions

diff --git a/lib/util/debug_s3.c b/lib/util/debug_s3.c
new file mode 100644
index 0000000000..b81daea5a7
--- /dev/null
+++ b/lib/util/debug_s3.c
@@ -0,0 +1,105 @@
+/*
+   Unix SMB/CIFS implementation.
+   Samba utility functions
+   Copyright (C) Andrew Bartlett 2011
+   Copyright (C) Andrew Tridgell 1992-2002
+
+   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 "librpc/gen_ndr/messaging.h"
+
+/* This is the Samba3-specific implementation of reopen_logs(), which
+ * calls out to the s3 loadparm code, and means that we don't depend
+ * on loadparm directly. */
+
+bool reopen_logs(void)
+{
+	if (lp_loaded()) {
+		struct debug_settings settings;
+		debug_set_logfile(lp_logfile());
+
+		ZERO_STRUCT(settings);
+		settings.max_log_size = lp_max_log_size();
+		settings.syslog = lp_syslog();
+		settings.syslog_only = lp_syslog_only();
+		settings.timestamp_logs = lp_timestamp_logs();
+		settings.debug_prefix_timestamp = lp_debug_prefix_timestamp();
+		settings.debug_hires_timestamp = lp_debug_hires_timestamp();
+		settings.debug_pid = lp_debug_pid();
+		settings.debug_uid = lp_debug_uid();
+		settings.debug_class = lp_debug_class();
+		debug_set_settings(&settings);
+	}
+	return reopen_logs_internal();
+}
+
+/****************************************************************************
+ Receive a "set debug level" message.
+****************************************************************************/
+
+void debug_message(struct messaging_context *msg_ctx,
+			  void *private_data,
+			  uint32_t msg_type,
+			  struct server_id src,
+			  DATA_BLOB *data)
+{
+	const char *params_str = (const char *)data->data;
+
+	/* Check, it's a proper string! */
+	if (params_str[(data->length)-1] != '\0') {
+		DEBUG(1, ("Invalid debug message from pid %u to pid %u\n",
+			  (unsigned int)procid_to_pid(&src),
+			  (unsigned int)getpid()));
+		return;
+	}
+
+	DEBUG(3, ("INFO: Remote set of debug to `%s'  (pid %u from pid %u)\n",
+		  params_str, (unsigned int)getpid(),
+		  (unsigned int)procid_to_pid(&src)));
+
+	debug_parse_levels(params_str);
+}
+
+/****************************************************************************
+ Return current debug level.
+****************************************************************************/
+
+static void debuglevel_message(struct messaging_context *msg_ctx,
+			       void *private_data, 
+			       uint32_t msg_type, 
+			       struct server_id src,
+			       DATA_BLOB *data)
+{
+	char *message = debug_list_class_names_and_levels();
+
+	if (!message) {
+		DEBUG(0,("debuglevel_message - debug_list_class_names_and_levels returned NULL\n"));
+		return;
+	}
+
+	DEBUG(1,("INFO: Received REQ_DEBUGLEVEL message from PID %s\n",
+		 procid_str_static(&src)));
+	messaging_send_buf(msg_ctx, src, MSG_DEBUGLEVEL,
+			   (uint8 *)message, strlen(message) + 1);
+
+	TALLOC_FREE(message);
+}
+void debug_register_msgs(struct messaging_context *msg_ctx)
+{
+	messaging_register(msg_ctx, NULL, MSG_DEBUG, debug_message);
+	messaging_register(msg_ctx, NULL, MSG_REQ_DEBUGLEVEL,
+			   debuglevel_message);
+}