lib/util: Add a callback facility for debug messages

This will allow dlz_bind9 to put log messages somewhere useful, which
may make it easier to debug.

Andrew Bartlett

1 files changed, 8 insertions, 1 deletions

diff --git a/lib/util/debug.h b/lib/util/debug.h
index c61a2c55be..b3647a3345 100644
--- a/lib/util/debug.h
+++ b/lib/util/debug.h
@@ -197,7 +197,7 @@ extern int  *DEBUGLEVEL_CLASS;
  * for example.  This makes it easy to override for debug to stderr on
  * the command line, as the smb.conf cannot reset it back to
  * file-based logging */
-enum debug_logtype {DEBUG_DEFAULT_STDERR = 0, DEBUG_DEFAULT_STDOUT = 1, DEBUG_FILE = 2, DEBUG_STDOUT = 3, DEBUG_STDERR = 4};
+enum debug_logtype {DEBUG_DEFAULT_STDERR = 0, DEBUG_DEFAULT_STDOUT = 1, DEBUG_FILE = 2, DEBUG_STDOUT = 3, DEBUG_STDERR = 4, DEBUG_CALLBACK = 5};
 
 struct debug_settings {
 	size_t max_log_size;
@@ -233,6 +233,13 @@ bool debug_get_output_is_stdout(void);
 void debug_schedule_reopen_logs(void);
 char *debug_list_class_names_and_levels(void);
 
+typedef void (*debug_callback_fn)(void *private_ptr, int level, const char *msg);
+
+/**
+   Set a callback for all debug messages.  Use in dlz_bind9 to push output to the bind logs
+ */
+void debug_set_callback(void *private_ptr, debug_callback_fn fn);
+
 /**
   log suspicious usage - print comments and backtrace
 */