[libc] add fprintf/vfprintfdima/for-travis

Change-Id: Ibc0fe656295cb97f8839d6fbae7682a57bc395e1
Signed-off-by: Dima Zavin <dima@android.com>

2 files changed, 21 insertions, 3 deletions

diff --git a/include/stdio.h b/include/stdio.h
index ce9c548b..c44a567b 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -67,6 +67,9 @@ int puts(const char *str);
 int getc(FILE *fp);
 int getchar(void);
 
+int fprintf(FILE *fp, const char *fmt, ...);
+int vfprintf(FILE *fp, const char *fmt, va_list ap);
+
 __END_CDECLS
 
 #endif
diff --git a/lib/libc/stdio.c b/lib/libc/stdio.c
index 698700b8..51b4ec7f 100644
--- a/lib/libc/stdio.c
+++ b/lib/libc/stdio.c
@@ -59,14 +59,29 @@ int getchar(void)
 	return getc(stdin);
 }
 
-int _printf(const char *fmt, ...)
+int vfprintf(FILE *fp, const char *fmt, va_list ap)
+{
+	return fp->vfprintf(fp->ctx, fmt, ap);
+}
+
+int fprintf(FILE *fp, const char *fmt, ...)
 {
+	va_list ap;
 	int err;
-	FILE *fp = stdout;
 
+	va_start(ap, fmt);
+	err = vfprintf(fp, fmt, ap);
+	va_end(ap);
+	return err;
+}
+
+int _printf(const char *fmt, ...)
+{
 	va_list ap;
+	int err;
+
 	va_start(ap, fmt);
-	err = fp->vfprintf(fp->ctx, fmt, ap);
+	err = vfprintf(stdout, fmt, ap);
 	va_end(ap);
 
 	return err;