2 files changed, 46 insertions, 0 deletions
diff --git a/lib/libalpm/log.c b/lib/libalpm/log.c
index 9e986d69..f7dd5336 100644
--- a/lib/libalpm/log.c
+++ b/lib/libalpm/log.c
@@ -122,4 +122,47 @@ void _alpm_log(alpm_handle_t *handle, alpm_loglevel_t flag, const char *fmt, ...
 	va_end(args);
 }
 
+/** Write formatted message to log.
+ * @param handle the context handle
+ * @param format formatted string to write out
+ * @param args formatting arguments
+ * @return 0 or number of characters written on success, vfprintf return value
+ * on error
+ */
+int _alpm_logaction(alpm_handle_t *handle, const char *prefix,
+		const char *fmt, va_list args)
+{
+	int ret = 0;
+
+	if(!(prefix && *prefix)) {
+		prefix = "UNKNOWN";
+	}
+
+	if(handle->usesyslog) {
+		/* we can't use a va_list more than once, so we need to copy it
+		 * so we can use the original when calling vfprintf below. */
+		va_list args_syslog;
+		va_copy(args_syslog, args);
+		vsyslog(LOG_WARNING, fmt, args_syslog);
+		va_end(args_syslog);
+	}
+
+	if(handle->logstream) {
+		time_t t;
+		struct tm *tm;
+
+		t = time(NULL);
+		tm = localtime(&t);
+
+		/* Use ISO-8601 date format */
+		fprintf(handle->logstream, "[%04d-%02d-%02d %02d:%02d] [%s] ",
+						tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+						tm->tm_hour, tm->tm_min, prefix);
+		ret = vfprintf(handle->logstream, fmt, args);
+		fflush(handle->logstream);
+	}
+
+	return ret;
+}
+
 /* vim: set noet: */
diff --git a/lib/libalpm/log.h b/lib/libalpm/log.h
index 6ec04561..4f4ee58f 100644
--- a/lib/libalpm/log.h
+++ b/lib/libalpm/log.h
@@ -27,6 +27,9 @@
 void _alpm_log(alpm_handle_t *handle, alpm_loglevel_t flag,
 		const char *fmt, ...) __attribute__((format(printf,3,4)));
 
+int _alpm_logaction(alpm_handle_t *handle, const char *prefix, const char *fmt, va_list args)
+	__attribute__((format(printf, 3, 0)));
+
 #endif /* ALPM_LOG_H */
 
 /* vim: set noet: */