Initial revision
diff --git a/lib/network.c b/lib/network.c
new file mode 100644
index 0000000..b68761b
--- /dev/null
+++ b/lib/network.c
@@ -0,0 +1,71 @@
+/*
+ * Network library.
+ * Copyright (C) 1997 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING. If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <zebra.h>
+
+/* Read nbytes from fd and store into ptr. */
+int
+readn (int fd, char *ptr, int nbytes)
+{
+ int nleft;
+ int nread;
+
+ nleft = nbytes;
+
+ while (nleft > 0)
+ {
+ nread = read (fd, ptr, nleft);
+
+ if (nread < 0)
+ return (nread);
+ else
+ if (nread == 0)
+ break;
+
+ nleft -= nread;
+ ptr += nread;
+ }
+
+ return nbytes - nleft;
+}
+
+/* Write nbytes from ptr to fd. */
+int
+writen(int fd, char *ptr, int nbytes)
+{
+ int nleft;
+ int nwritten;
+
+ nleft = nbytes;
+
+ while (nleft > 0)
+ {
+ nwritten = write(fd, ptr, nleft);
+
+ if (nwritten <= 0)
+ return (nwritten);
+
+ nleft -= nwritten;
+ ptr += nwritten;
+ }
+ return nbytes - nleft;
+}