X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=daemon.c;h=bfa81487430f62dc7417db6ba6e0c6d53c008051;hp=ddfe680cebc63dc1c7af89fde333c665873765eb;hb=99f21f0b6ecf29f949cdbce285e241a2e3ef3093;hpb=2031b9cab9304b02c0372f73eef54d9501277031

diff --git a/daemon.c b/daemon.c
index ddfe680c..bfa81487 100644
--- a/daemon.c
+++ b/daemon.c
@@ -31,6 +31,12 @@ struct daemon {
 	/** Used for colored log messages. */
 	char log_colors[NUM_LOGLEVELS][COLOR_MAXLEN];
 	char *old_cwd;
+	/*
+	 * If these pointers are non-NULL, the functions are called from
+	 * daemon_log() before and after writing each log message.
+	 */
+	void (*pre_log_hook)(void);
+	void (*post_log_hook)(void);
 };
 
 static struct daemon the_daemon, *me = &the_daemon;
@@ -140,6 +146,12 @@ void daemon_set_loglevel(const char *loglevel)
 	me->loglevel = ret;
 }
 
+void daemon_set_hooks(void (*pre_log_hook)(void), void (*post_log_hook)(void))
+{
+	me->pre_log_hook = pre_log_hook;
+	me->post_log_hook = post_log_hook;
+}
+
 /**
  * Set one of the daemon config flags.
  *
@@ -409,6 +421,8 @@ __printf_2_3 void daemon_log(int ll, const char* fmt,...)
 		return;
 
 	fp = me->logfile? me->logfile : stderr;
+	if (me->pre_log_hook)
+		me->pre_log_hook();
 	color = daemon_test_flag(DF_COLOR_LOG)? me->log_colors[ll] : NULL;
 	if (color)
 		fprintf(fp, "%s", color);
@@ -441,4 +455,6 @@ __printf_2_3 void daemon_log(int ll, const char* fmt,...)
 	va_end(argp);
 	if (color)
 		fprintf(fp, "%s", COLOR_RESET);
+	if (me->post_log_hook)
+		me->post_log_hook();
 }