Factor out dprintf()

1 files changed, 21 insertions, 0 deletions

diff --git a/dprintf.c b/dprintf.c
new file mode 100644
index 0000000..4bbff79
--- /dev/null
+++ b/dprintf.c
@@ -0,0 +1,21 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdarg.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "util.h"
+
+int
+dprintf(int fd, const char *fmt, ...)
+{
+	char buf[BUFSIZ];
+	int r;
+	va_list ap;
+
+	va_start(ap, fmt);
+	r = vsnprintf(buf, sizeof(buf), fmt, ap);
+	if (r > 0)
+		write(fd, buf, r);
+	va_end(ap);
+	return r;
+}