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-rw-r--r--include/vsprintf.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/vsprintf.h b/include/vsprintf.h
index 0651446..5195598 100644
--- a/include/vsprintf.h
+++ b/include/vsprintf.h
@@ -36,4 +36,23 @@ int sprintf(char *buf, const char *fmt, ...)
int vsprintf(char *buf, const char *fmt, va_list args);
char *simple_itoa(ulong i);
+#ifdef CONFIG_SYS_VSNPRINTF
+int snprintf(char *buf, size_t size, const char *fmt, ...)
+ __attribute__ ((format (__printf__, 3, 4)));
+int scnprintf(char *buf, size_t size, const char *fmt, ...)
+ __attribute__ ((format (__printf__, 3, 4)));
+int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
+#else
+/*
+ * Use macros to silently drop the size parameter. Note that the 'cn'
+ * versions are the same as the 'n' versions since the functions assume
+ * there is always enough buffer space when !CONFIG_SYS_VSNPRINTF
+ */
+#define snprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
+#define scnprintf(buf, size, fmt, args...) sprintf(buf, fmt, ##args)
+#define vsnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
+#define vscnprintf(buf, size, fmt, args...) vsprintf(buf, fmt, ##args)
+#endif /* CONFIG_SYS_VSNPRINTF */
+
#endif