1 files changed, 64 insertions, 0 deletions
diff --git a/compat/dprintf.c b/compat/dprintf.c
new file mode 100644
index 000000000000..2ef81ade814b
--- /dev/null
+++ b/compat/dprintf.c
@@ -0,0 +1,64 @@
+/*
+ * dhcpcd - DHCP client daemon
+ * Copyright (c) 2006-2017 Roy Marples <roy@marples.name>
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <unistd.h>
+
+#include "dprintf.h"
+
+int
+vdprintf(int fd, const char * __restrict fmt, va_list va)
+{
+	int e;
+	FILE *fp;
+
+	if ((e = dup(fd)) == -1)
+		return -1;
+
+	if ((fp = fdopen(e, "a")) == NULL) {
+		close(e);
+		return -1;
+	}
+
+	e = vfprintf(fp, fmt, va);
+	fclose(fp);
+	return e;
+}
+
+int
+dprintf(int fd, const char * __restrict fmt, ...)
+{
+	int e;
+	va_list va;
+
+	va_start(va, fmt);
+	e = vdprintf(fd, fmt, va);
+	va_end(va);
+	return e;
+}