Added the ifconfig command.

1 files changed, 238 insertions, 0 deletions

diff --git a/freebsd-userspace/commands/sbin/ifconfig/af_nd6.c b/freebsd-userspace/commands/sbin/ifconfig/af_nd6.c
new file mode 100644
index 00000000..74820732
--- /dev/null
+++ b/freebsd-userspace/commands/sbin/ifconfig/af_nd6.c
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 2009 Hiroki Sato.  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 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.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+  "$FreeBSD$";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <sys/sysctl.h>
+#include <net/if.h>
+#include <net/route.h>
+
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <ifaddrs.h>
+
+#include <arpa/inet.h>
+
+#include <netinet/in.h>
+#ifdef __rtems__
+#include <freebsd/net/if_var.h>
+#include <freebsd/netinet/in_var.h>
+#else
+#include <net/if_var.h>
+#include <netinet/in_var.h>
+#endif
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#ifdef __rtems__
+#include <freebsd/netinet6/nd6.h>
+#else
+#include <netinet6/nd6.h>
+#endif
+
+#include "ifconfig.h"
+
+#define	MAX_SYSCTL_TRY	5
+#define	ND6BITS	"\020\001PERFORMNUD\002ACCEPT_RTADV\003PREFER_SOURCE" \
+		"\004IFDISABLED\005DONT_SET_IFROUTE\006AUTO_LINKLOCAL" \
+		"\020DEFAULTIF"
+
+static int isnd6defif(int);
+void setnd6flags(const char *, int, int, const struct afswtch *);
+void setnd6defif(const char *, int, int, const struct afswtch *);
+
+void
+setnd6flags(const char *dummyaddr __unused,
+	int d, int s,
+	const struct afswtch *afp)
+{
+	struct in6_ndireq nd;
+	int error;
+
+	memset(&nd, 0, sizeof(nd));
+	strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
+	error = ioctl(s, SIOCGIFINFO_IN6, &nd);
+	if (error) {
+		warn("ioctl(SIOCGIFINFO_IN6)");
+		return;
+	}
+	if (d < 0)
+		nd.ndi.flags &= ~(-d);
+	else
+		nd.ndi.flags |= d;
+	error = ioctl(s, SIOCSIFINFO_IN6, (caddr_t)&nd);
+	if (error)
+		warn("ioctl(SIOCSIFINFO_IN6)");
+}
+
+void
+setnd6defif(const char *dummyaddr __unused,
+	int d, int s,
+	const struct afswtch *afp)
+{
+	struct in6_ndifreq ndifreq;
+	int ifindex;
+	int error;
+
+	memset(&ndifreq, 0, sizeof(ndifreq));
+	strncpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
+
+	if (d < 0) {
+		if (isnd6defif(s)) {
+			/* ifindex = 0 means to remove default if */
+			ifindex = 0;
+		} else
+			return;
+	} else if ((ifindex = if_nametoindex(ndifreq.ifname)) == 0) {
+		warn("if_nametoindex(%s)", ndifreq.ifname);
+		return;
+	}
+
+	ndifreq.ifindex = ifindex;
+	error = ioctl(s, SIOCSDEFIFACE_IN6, (caddr_t)&ndifreq);
+	if (error)
+		warn("ioctl(SIOCSDEFIFACE_IN6)");
+}
+
+static int
+isnd6defif(int s)
+{
+	struct in6_ndifreq ndifreq;
+	unsigned int ifindex;
+	int error;
+
+	memset(&ndifreq, 0, sizeof(ndifreq));
+	strncpy(ndifreq.ifname, ifr.ifr_name, sizeof(ndifreq.ifname));
+
+	ifindex = if_nametoindex(ndifreq.ifname);
+	error = ioctl(s, SIOCGDEFIFACE_IN6, (caddr_t)&ndifreq);
+	if (error) {
+		warn("ioctl(SIOCGDEFIFACE_IN6)");
+		return (error);
+	}
+	return (ndifreq.ifindex == ifindex);
+}
+
+static void
+nd6_status(int s)
+{
+	struct in6_ndireq nd;
+	struct rt_msghdr *rtm;
+	size_t needed;
+	char *buf, *next;
+	int mib[6], ntry;
+	int s6;
+	int error;
+	int isinet6, isdefif;
+
+	/* Check if the interface has at least one IPv6 address. */
+	mib[0] = CTL_NET;
+	mib[1] = PF_ROUTE;
+	mib[2] = 0;
+	mib[3] = AF_INET6;
+	mib[4] = NET_RT_IFLIST;
+	mib[5] = if_nametoindex(ifr.ifr_name);
+
+	/* Try to prevent a race between two sysctls. */
+	ntry = 0;
+	do {
+		error = sysctl(mib, 6, NULL, &needed, NULL, 0);
+		if (error) {
+			warn("sysctl(NET_RT_IFLIST)/estimate");
+			return;
+		}
+		buf = malloc(needed);
+		if (buf == NULL) {
+			warn("malloc for sysctl(NET_RT_IFLIST) failed");
+			return;
+		}
+		if ((error = sysctl(mib, 6, buf, &needed, NULL, 0)) < 0) {
+			if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
+				warn("sysctl(NET_RT_IFLIST)/get");
+				free(buf);
+				return;
+			}
+			free(buf);
+			buf = NULL;
+		}
+	} while (buf == NULL);
+	
+	isinet6 = 0;
+	for (next = buf; next < buf + needed; next += rtm->rtm_msglen) {
+		rtm = (struct rt_msghdr *)next;
+
+		if (rtm->rtm_version != RTM_VERSION)
+			continue;
+		if (rtm->rtm_type == RTM_NEWADDR) {
+			isinet6 = 1;
+			break;
+		}
+	}
+	free(buf);
+	if (!isinet6)
+		return;
+
+	memset(&nd, 0, sizeof(nd));
+	strncpy(nd.ifname, ifr.ifr_name, sizeof(nd.ifname));
+	if ((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
+		warn("socket(AF_INET6, SOCK_DGRAM)");
+		return;
+	}
+	error = ioctl(s6, SIOCGIFINFO_IN6, &nd);
+	if (error) {
+		warn("ioctl(SIOCGIFINFO_IN6)");
+		close(s6);
+		return;
+	}
+	isdefif = isnd6defif(s6);
+	close(s6);
+	if (nd.ndi.flags == 0 && !isdefif)
+		return;
+	printb("\tnd6 options",
+	    (unsigned int)(nd.ndi.flags | (isdefif << 15)), ND6BITS);
+	putchar('\n');
+}
+
+static struct afswtch af_nd6 = {
+	.af_name	= "nd6",
+	.af_af		= AF_LOCAL,
+	.af_other_status= nd6_status,
+};
+
+static __constructor void
+nd6_ctor(void)
+{
+	af_register(&af_nd6);
+}