1 files changed, 98 insertions, 0 deletions
diff --git a/lib/libifconfig/libifconfig_inet.c b/lib/libifconfig/libifconfig_inet.c
new file mode 100644
index 0000000000000..59c74b11a57f0
--- /dev/null
+++ b/lib/libifconfig/libifconfig_inet.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 1983, 1993
+ *  The Regents of the University of California.  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.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * $FreeBSD$
+ */
+#include <sys/param.h>
+#include <sys/ioctl.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+
+#include <errno.h>
+#include <ifaddrs.h>
+#include <string.h>
+#include <strings.h>
+
+#include "libifconfig.h"
+#include "libifconfig_internal.h"
+
+static const struct sockaddr_in NULL_SIN;
+
+static int
+inet_prefixlen(const struct in_addr *addr)
+{
+	int x;
+
+	x = ffs(ntohl(addr->s_addr));
+	return (x == 0 ? 0 : 33 - x);
+}
+
+int
+ifconfig_inet_get_addrinfo(ifconfig_handle_t *h __unused,
+    const char *name __unused, struct ifaddrs *ifa,
+    struct ifconfig_inet_addr *addr)
+{
+	bzero(addr, sizeof(*addr));
+
+	/* Set the address */
+	if (ifa->ifa_addr == NULL) {
+		return (-1);
+	} else {
+		addr->sin = (struct sockaddr_in *)ifa->ifa_addr;
+	}
+
+	/* Set the destination address */
+	if (ifa->ifa_flags & IFF_POINTOPOINT) {
+		if (ifa->ifa_dstaddr) {
+			addr->dst = (struct sockaddr_in *)ifa->ifa_dstaddr;
+		} else {
+			addr->dst = &NULL_SIN;
+		}
+	}
+
+	/* Set the netmask and prefixlen */
+	if (ifa->ifa_netmask) {
+		addr->netmask = (struct sockaddr_in *)ifa->ifa_netmask;
+	} else {
+		addr->netmask = &NULL_SIN;
+	}
+	addr->prefixlen = inet_prefixlen(&addr->netmask->sin_addr);
+
+	/* Set the broadcast */
+	if (ifa->ifa_flags & IFF_BROADCAST) {
+		addr->broadcast = (struct sockaddr_in *)ifa->ifa_broadaddr;
+	}
+
+	/* Set the vhid */
+	if (ifa->ifa_data) {
+		addr->vhid = ((struct if_data *)ifa->ifa_data)->ifi_vhid;
+	}
+
+	return (0);
+}