Add missing snprintf() to libc/printf.c (trivial).

This is also taken from the HelenOS project.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3210 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

payloads/libpayload/LICENSES

@@ -78,6 +78,7 @@ holders, and the exact license terms that apply.
           svn checkout svn://svn.helenos.eu/HelenOS/trunk HelenOS
           http://svn.helenos.eu/chora/browse.php?f=%2Ftrunk%2F
   Original files: kernel/generic/src/printf/printf_core.c
+                  kernel/generic/src/printf/snprintf.c
                   kernel/generic/src/printf/sprintf.c
                   kernel/generic/src/printf/vsnprintf.c
                   kernel/generic/src/printf/vsprintf.c

payloads/libpayload/include/libpayload.h

@@ -110,6 +110,7 @@ void *memmove(void *dst, const void *src, size_t n);
 int memcmp(const char *s1, const char *s2, size_t len);
 
 /* libc/printf.c */
+int snprintf(char *str, size_t size, const char *fmt, ...);
 int sprintf(char *str, const char *fmt, ...);
 int vsnprintf(char *str, size_t size, const char *fmt, va_list ap);
 int vsprintf(char *str, const char *fmt, va_list ap);

payloads/libpayload/libc/printf.c

@@ -694,6 +694,18 @@ out:
 	return counter;
 }
 
+int snprintf(char *str, size_t size, const char *fmt, ...)
+{
+	int ret;
+	va_list args;
+
+	va_start(args, fmt);
+	ret = vsnprintf(str, size, fmt, args);
+	va_end(args);
+
+	return ret;
+}
+
 int sprintf(char *str, const char *fmt, ...)
 {
 	int ret;