--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/cmd/getent/dogetnetmask.c	Tue Jun 02 18:56:50 2009 +0900
@@ -0,0 +1,84 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+#ident	"@(#)dogetnetmask.c	1.5	05/06/08 SMI"
+
+/*
+ * Copyright (c) 1994-1996, by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include "getent.h"
+
+extern char *inet_nettoa(struct in_addr in);
+
+static int
+putnetmask(const struct in_addr key, const struct in_addr netmask, FILE *fp)
+{
+	char **p;
+	int rc = 0;
+	struct in_addr net;
+
+	net.s_addr = ntohl(key.s_addr);
+	if (fprintf(fp, "%-20s", inet_nettoa(net)) == EOF)
+		rc = 1;
+	if (fprintf(fp, " %s", inet_ntoa(netmask)) == EOF)
+		rc = 1;
+	if (putc('\n', fp) == EOF)
+		rc = 1;
+	return (rc);
+}
+
+/*
+ * getnetmaskbyaddr - get entries from network database
+ */
+int
+dogetnetmask(const char **list)
+{
+	int rc = EXC_SUCCESS;
+	struct in_addr addr, netmask;
+
+	if (list == NULL || *list == NULL)
+		return (EXC_ENUM_NOT_SUPPORTED);
+
+	for (; *list != NULL; list++) {
+		addr.s_addr = htonl(inet_network(*list));
+		if (addr.s_addr != -1) {
+			if (getnetmaskbyaddr(addr, &netmask) == 0) {
+				(void) putnetmask(addr, netmask, stdout);
+			} else {
+				rc = EXC_NAME_NOT_FOUND;
+			}
+		} else {
+			rc = EXC_NAME_NOT_FOUND;
+		}
+	}
+
+	return (rc);
+}