1 files changed, 157 insertions, 0 deletions
diff --git a/source4/lib/debug.c b/source4/lib/debug.c
new file mode 100644
index 0000000000..37f93b9ae5
--- /dev/null
+++ b/source4/lib/debug.c
@@ -0,0 +1,157 @@
+/*
+   Unix SMB/CIFS implementation.
+   Samba debug functions
+   Copyright (C) Andrew Tridgell 2003
+   Copyright (C) James J Myers	 2003
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+/* this global variable determines what messages are printed */
+int DEBUGLEVEL;
+
+
+/* the registered mutex handlers */
+static struct {
+	const char *name;
+	struct debug_ops ops;
+} debug_handlers;
+
+/* state variables for the debug system */
+static struct {
+	int fd;
+	enum debug_logtype logtype;
+	const char *prog_name;
+} state;
+
+/*
+  the backend for debug messages. Note that the DEBUG() macro has already
+  ensured that the log level has been met before this is called
+*/
+void do_debug(const char *format, ...)
+{
+	va_list ap;
+	char *s = NULL;
+
+	if (state.fd == 0) {
+		reopen_logs();
+	}
+
+	if (state.fd <= 0) return;
+
+	va_start(ap, format);
+	vasprintf(&s, format, ap);
+	va_end(ap);
+
+	write(state.fd, s, strlen(s));
+	free(s);
+}
+
+/*
+  reopen the log file (usually called because the log file name might have changed)
+*/
+void reopen_logs(void)
+{
+	char *logfile = lp_logfile();
+	char *fname = NULL;
+	int old_fd = state.fd;
+
+	state.fd = 0;
+
+	switch (state.logtype) {
+	case DEBUG_STDOUT:
+		state.fd = 1;
+		break;
+
+	case DEBUG_STDERR:
+		state.fd = 2;
+		break;
+
+	case DEBUG_FILE:
+		if ((*logfile) == '/') {
+			fname = strdup(logfile);
+		} else {
+			asprintf(&fname, "%s/%s.log", dyn_LOGFILEBASE, logfile);
+		}
+		if (fname) {
+			state.fd = open(fname, O_CREAT|O_APPEND|O_WRONLY, 0644);
+			free(fname);
+		}
+		break;
+	}
+
+	if (old_fd > 2) {
+		close(old_fd);
+	}
+}
+
+/*
+  control the name of the logfile and whether logging will be to stdout, stderr
+  or a file
+*/
+void setup_logging(const char *prog_name, enum debug_logtype new_logtype)
+{
+	state.logtype = new_logtype;
+	state.prog_name = prog_name;
+	reopen_logs();
+}
+
+/*
+  return a string constant containing n tabs
+  no more than 10 tabs are returned
+*/
+const char *do_debug_tab(uint_t n)
+{
+	const char *tabs[] = {"", "\t", "\t\t", "\t\t\t", "\t\t\t\t", "\t\t\t\t\t", 
+			      "\t\t\t\t\t\t", "\t\t\t\t\t\t\t", "\t\t\t\t\t\t\t\t", 
+			      "\t\t\t\t\t\t\t\t\t", "\t\t\t\t\t\t\t\t\t\t"};
+	return tabs[MIN(n, 10)];
+}
+
+
+/*
+  log/print suspicious usage - print comments and backtrace
+*/	
+void log_suspicious_usage(const char *from, const char *info)
+{
+	if (debug_handlers.ops.log_suspicious_usage) {
+		return debug_handlers.ops.log_suspicious_usage(from, info);
+	}
+}
+void print_suspicious_usage(const char* from, const char* info)
+{
+	if (debug_handlers.ops.print_suspicious_usage) {
+		return debug_handlers.ops.print_suspicious_usage(from, info);
+	}
+}
+
+uint32 get_task_id(void)
+{
+	if (debug_handlers.ops.get_task_id) {
+		return debug_handlers.ops.get_task_id();
+	}
+	return getpid();
+}
+
+/*
+  register a set of debug handlers. 
+*/
+void register_debug_handlers(const char *name, struct debug_ops *ops)
+{
+	debug_handlers.name = name;
+	debug_handlers.ops = *ops;
+}