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-rw-r--r--source4/lib/debug.c157
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;
+}