vsprintf: Add scnprintf from kernel

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 800ded7939..9b8e8cf5f8 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -595,6 +595,30 @@ int snprintf(char *buf, size_t size, const char *fmt, ...)
 }
 EXPORT_SYMBOL(snprintf);
 
+/**
+ * scnprintf - Format a string and place it in a buffer
+ * @buf: The buffer to place the result into
+ * @size: The size of the buffer, including the trailing null space
+ * @fmt: The format string to use
+ * @...: Arguments for the format string
+ *
+ * The return value is the number of characters written into @buf not including
+ * the trailing '\0'. If @size is == 0 the function returns 0.
+ */
+
+int scnprintf(char *buf, size_t size, const char *fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args, fmt);
+	i = vscnprintf(buf, size, fmt, args);
+	va_end(args);
+
+	return i;
+}
+EXPORT_SYMBOL(scnprintf);
+
 /* Simplified asprintf. */
 char *vasprintf(const char *fmt, va_list ap)
 {