[PATCH BlueZ 1/4] util: Introduce util_debug_va

[Luiz Augusto von Dentz <luiz.dentz@gmail.com>]

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This introduces util_debug_va which can take a va_list that enables
callers to create wrapper functions if they need to.
---
 src/shared/util.c | 19 ++++++++++++++-----
 src/shared/util.h |  4 ++++
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/src/shared/util.c b/src/shared/util.c
index 525302164..9c2054211 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -15,7 +15,6 @@
 #define _GNU_SOURCE
 #include <stdio.h>
 #include <ctype.h>
-#include <stdarg.h>
 #include <stdbool.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -42,20 +41,30 @@ void *btd_malloc(size_t size)
 	return NULL;
 }
 
+void util_debug_va(util_debug_func_t function, void *user_data,
+				const char *format, va_list va)
+{
+	char str[78];
+
+	if (!function || !format)
+		return;
+
+	vsnprintf(str, sizeof(str), format, va);
+
+	function(str, user_data);
+}
+
 void util_debug(util_debug_func_t function, void *user_data,
 						const char *format, ...)
 {
-	char str[78];
 	va_list ap;
 
 	if (!function || !format)
 		return;
 
 	va_start(ap, format);
-	vsnprintf(str, sizeof(str), format, ap);
+	util_debug_va(function, user_data, format, ap);
 	va_end(ap);
-
-	function(str, user_data);
 }
 
 void util_hexdump(const char dir, const unsigned char *buf, size_t len,
diff --git a/src/shared/util.h b/src/shared/util.h
index 6fb702797..d6de55885 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -10,6 +10,7 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <stdarg.h>
 #include <alloca.h>
 #include <byteswap.h>
 #include <string.h>
@@ -89,6 +90,9 @@ void *btd_malloc(size_t size);
 
 typedef void (*util_debug_func_t)(const char *str, void *user_data);
 
+void util_debug_va(util_debug_func_t function, void *user_data,
+				const char *format, va_list va);
+
 void util_debug(util_debug_func_t function, void *user_data,
 						const char *format, ...)
 					__attribute__((format(printf, 3, 4)));
-- 
2.26.2