[unix-history] / usr / src / sbin / ifconfig / ifconfig.c

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)ifconfig.c	4.26 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>

#include <net/if.h>
#include <netinet/in.h>

#define	NSIP
#include <netns/ns.h>
#include <netns/ns_if.h>

#define EON
#include <netiso/iso.h>
#include <netiso/iso_var.h>
#include <sys/protosw.h>

#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <netdb.h>

extern int errno;
struct	ifreq		ifr, ridreq;
struct	ifaliasreq	addreq;
struct	iso_ifreq	iso_ridreq;
struct	iso_aliasreq	iso_addreq;
struct	sockaddr_in	netmask;

char	name[30];
int	flags;
int	metric;
int	setaddr;
int	setipdst;
int	doalias;
int	clearaddr;
int	newaddr = 1;
int	s;
extern	int errno;

int	setifflags(), setifaddr(), setifdstaddr(), setifnetmask();
int	setifmetric(), setifbroadaddr(), setifipdst();
int	notealias(), setsnpaoffset();

#define	NEXTARG		0xffffff

struct	cmd {
	char	*c_name;
	int	c_parameter;		/* NEXTARG means next argv */
	int	(*c_func)();
} cmds[] = {
	{ "up",		IFF_UP,		setifflags } ,
	{ "down",	-IFF_UP,	setifflags },
	{ "trailers",	-IFF_NOTRAILERS,setifflags },
	{ "-trailers",	IFF_NOTRAILERS,	setifflags },
	{ "arp",	-IFF_NOARP,	setifflags },
	{ "-arp",	IFF_NOARP,	setifflags },
	{ "debug",	IFF_DEBUG,	setifflags },
	{ "-debug",	-IFF_DEBUG,	setifflags },
	{ "alias",	IFF_UP,		notealias },
	{ "-alias",	-IFF_UP,	notealias },
	{ "delete",	-IFF_UP,	notealias },
#ifdef notdef
#define	EN_SWABIPS	0x1000
	{ "swabips",	EN_SWABIPS,	setifflags },
	{ "-swabips",	-EN_SWABIPS,	setifflags },
#endif
	{ "netmask",	NEXTARG,	setifnetmask },
	{ "metric",	NEXTARG,	setifmetric },
	{ "snpaoffset",	NEXTARG,	setsnpaoffset },
	{ "broadcast",	NEXTARG,	setifbroadaddr },
	{ "ipdst",	NEXTARG,	setifipdst },
	{ 0,		0,		setifaddr },
	{ 0,		0,		setifdstaddr },
};

/*
 * XNS support liberally adapted from
 * code written at the University of Maryland
 * principally by James O'Toole and Chris Torek.
 */
int	in_status(), in_getaddr();
int	xns_status(), xns_getaddr();
int	iso_status(), iso_getaddr();

/* Known address families */
struct afswtch {
	char *af_name;
	short af_af;
	int (*af_status)();
	int (*af_getaddr)();
	int af_difaddr;
	int af_aifaddr;
	caddr_t af_ridreq;
	caddr_t af_addreq;
} afs[] = {
#define C(x) ((caddr_t) &x)
	{ "inet", AF_INET, in_status, in_getaddr,
	     SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
	{ "ns", AF_NS, xns_status, xns_getaddr,
	     SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
	{ "iso", AF_ISO, iso_status, iso_getaddr,
	     SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) },
	{ 0,	0,	    0,		0 }
};

struct afswtch *afp;	/*the address family being set or asked about*/

int testing = 0;
Ioctl(a,b,c) {
	int error = 0;
	if (testing)
		printf("would call ioctl with %x, %x, %x\n", a, b, c);
	else
		error = ioctl(a, b, c);
	return error;
}
#define ioctl(a, b, c) Ioctl(a,b,c)

main(argc, argv)
	int argc;
	char *argv[];
{
	int af = AF_INET;
	register struct afswtch *rafp;

	if (argc < 2) {
		fprintf(stderr, "usage: ifconfig interface\n%s%s%s%s%s",
		    "\t[ af [ address [ dest_addr ] ] [ up ] [ down ]",
			    "[ netmask mask ] ]\n",
		    "\t[ metric n ]\n",
		    "\t[ trailers | -trailers ]\n",
		    "\t[ arp | -arp ]\n");
		exit(1);
	}
	argc--, argv++;
	strncpy(name, *argv, sizeof(name));
	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
	argc--, argv++;
	if (argc > 0) {
		for (afp = rafp = afs; rafp->af_name; rafp++)
			if (strcmp(rafp->af_name, *argv) == 0) {
				afp = rafp; argc--; argv++;
				break;
			}
		rafp = afp;
		af = ifr.ifr_addr.sa_family = rafp->af_af;
	}
	s = socket(af, SOCK_DGRAM, 0);
	if (s < 0) {
		perror("ifconfig: socket");
		exit(1);
	}
	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
		Perror("ioctl (SIOCGIFFLAGS)");
		exit(1);
	}
	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
	flags = ifr.ifr_flags;
	if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0)
		perror("ioctl (SIOCGIFMETRIC)");
	else
		metric = ifr.ifr_metric;
	if (argc == 0) {
		status();
		exit(0);
	}
	while (argc > 0) {
		register struct cmd *p;

		for (p = cmds; p->c_name; p++)
			if (strcmp(*argv, p->c_name) == 0)
				break;
		if (p->c_name == 0 && setaddr)
			p++;	/* got src, do dst */
		if (p->c_func) {
			if (p->c_parameter == NEXTARG) {
				(*p->c_func)(argv[1]);
				argc--, argv++;
			} else
				(*p->c_func)(*argv, p->c_parameter);
		}
		argc--, argv++;
	}
	if (setipdst && af==AF_NS) {
		struct nsip_req rq;
		int size = sizeof(rq);

		rq.rq_ns = addreq.ifra_addr;
		rq.rq_ip = addreq.ifra_dstaddr;

		if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
			Perror("Encapsulation Routing");
	}
	if (clearaddr) {
		int ret;
		strncpy(rafp->af_ridreq, name, sizeof ifr.ifr_name);
		if ((ret = ioctl(s, rafp->af_difaddr, rafp->af_ridreq)) < 0) {
			if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
				/* means no previous address for interface */
			} else
				Perror("ioctl (SIOCDIFADDR)");
		}
	}
	if (newaddr) {
		strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name);
		if (ioctl(s, rafp->af_aifaddr, rafp->af_addreq) < 0)
			Perror("ioctl (SIOCAIFADDR)");
	}
	exit(0);
}
#define RIDADDR 0
#define ADDR	1
#define MASK	2
#define DSTADDR	3

/*ARGSUSED*/
setifaddr(addr, param)
	char *addr;
	short param;
{
	/*
	 * Delay the ioctl to set the interface addr until flags are all set.
	 * The address interpretation may depend on the flags,
	 * and the flags may change when the address is set.
	 */
	setaddr++;
	if (doalias == 0)
		clearaddr = 1;
	(*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR));
}

setifnetmask(addr)
	char *addr;
{
	(*afp->af_getaddr)(addr, MASK);
}

setifbroadaddr(addr)
	char *addr;
{
	(*afp->af_getaddr)(addr, DSTADDR);
}

setifipdst(addr)
	char *addr;
{
	in_getaddr(addr, DSTADDR);
	setipdst++;
	clearaddr = 0;
	newaddr = 0;
}
#define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
/*ARGSUSED*/
notealias(addr, param)
	char *addr;
{
	if (setaddr && doalias == 0 && param < 0)
		bcopy((caddr_t)rqtosa(af_addreq),
		      (caddr_t)rqtosa(af_ridreq),
		      rqtosa(af_addreq)->sa_len);
	doalias = param;
	if (param < 0) {
		clearaddr = 1;
		newaddr = 0;
	} else
		clearaddr = 0;
}

/*ARGSUSED*/
setifdstaddr(addr, param)
	char *addr;
	int param;
{
	(*afp->af_getaddr)(addr, DSTADDR);
}

setifflags(vname, value)
	char *vname;
	short value;
{
 	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
 		Perror("ioctl (SIOCGIFFLAGS)");
 		exit(1);
 	}
	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
 	flags = ifr.ifr_flags;

	if (value < 0) {
		value = -value;
		flags &= ~value;
	} else
		flags |= value;
	ifr.ifr_flags = flags;
	if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
		Perror(vname);
}

setifmetric(val)
	char *val;
{
	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	ifr.ifr_metric = atoi(val);
	if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
		perror("ioctl (set metric)");
}

setsnpaoffset(val)
	char *val;
{
	iso_addreq.ifra_snpaoffset = atoi(val);
}

#define	IFFBITS \
"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\
"

/*
 * Print the status of the interface.  If an address family was
 * specified, show it and it only; otherwise, show them all.
 */
status()
{
	register struct afswtch *p = afp;
	short af = ifr.ifr_addr.sa_family;

	printf("%s: ", name);
	printb("flags", flags, IFFBITS);
	if (metric)
		printf(" metric %d", metric);
	putchar('\n');
	if ((p = afp) != NULL) {
		(*p->af_status)(1);
	} else for (p = afs; p->af_name; p++) {
		ifr.ifr_addr.sa_family = p->af_af;
		(*p->af_status)(0);
	}
}

in_status(force)
	int force;
{
	struct sockaddr_in *sin;
	char *inet_ntoa();

	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
		if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
			if (!force)
				return;
			bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
		} else
			perror("ioctl (SIOCGIFADDR)");
	}
	sin = (struct sockaddr_in *)&ifr.ifr_addr;
	printf("\tinet %s ", inet_ntoa(sin->sin_addr));
	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) {
		if (errno != EADDRNOTAVAIL)
			perror("ioctl (SIOCGIFNETMASK)");
		bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
	} else
		netmask.sin_addr =
		    ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr;
	if (flags & IFF_POINTOPOINT) {
		if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
			if (errno == EADDRNOTAVAIL)
			    bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
			else
			    perror("ioctl (SIOCGIFDSTADDR)");
		}
		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
		sin = (struct sockaddr_in *)&ifr.ifr_dstaddr;
		printf("--> %s ", inet_ntoa(sin->sin_addr));
	}
	printf("netmask %x ", ntohl(netmask.sin_addr.s_addr));
	if (flags & IFF_BROADCAST) {
		if (ioctl(s, SIOCGIFBRDADDR, (caddr_t)&ifr) < 0) {
			if (errno == EADDRNOTAVAIL)
			    bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
			else
			    perror("ioctl (SIOCGIFADDR)");
		}
		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
		sin = (struct sockaddr_in *)&ifr.ifr_addr;
		if (sin->sin_addr.s_addr != 0)
			printf("broadcast %s", inet_ntoa(sin->sin_addr));
	}
	putchar('\n');
}


xns_status(force)
	int force;
{
	struct sockaddr_ns *sns;

	close(s);
	s = socket(AF_NS, SOCK_DGRAM, 0);
	if (s < 0) {
		if (errno == EPROTONOSUPPORT)
			return;
		perror("ifconfig: socket");
		exit(1);
	}
	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
		if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
			if (!force)
				return;
			bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
		} else
			perror("ioctl (SIOCGIFADDR)");
	}
	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
	sns = (struct sockaddr_ns *)&ifr.ifr_addr;
	printf("\tns %s ", ns_ntoa(sns->sns_addr));
	if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */
		if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
			if (errno == EADDRNOTAVAIL)
			    bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
			else
			    Perror("ioctl (SIOCGIFDSTADDR)");
		}
		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
		sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr;
		printf("--> %s ", ns_ntoa(sns->sns_addr));
	}
	putchar('\n');
}

iso_status(force)
	int force;
{
	struct sockaddr_iso *siso;
	struct iso_ifreq ifr;

	close(s);
	s = socket(AF_ISO, SOCK_DGRAM, 0);
	if (s < 0) {
		if (errno == EPROTONOSUPPORT)
			return;
		perror("ifconfig: socket");
		exit(1);
	}
	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
		if (errno == EADDRNOTAVAIL || errno == EAFNOSUPPORT) {
			if (!force)
				return;
			bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
		} else
			perror("ioctl (SIOCGIFADDR)");
	}
	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
	siso = &ifr.ifr_Addr;
	printf("\tiso %s ", iso_ntoa(siso->siso_addr));
	if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) {
		if (errno != EADDRNOTAVAIL)
			perror("ioctl (SIOCGIFNETMASK)");
	} else {
		printf("\n netmask %s ", iso_ntoa(siso->siso_addr));
	}
	if (flags & IFF_POINTOPOINT) {
		if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
			if (errno == EADDRNOTAVAIL)
			    bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
			else
			    Perror("ioctl (SIOCGIFDSTADDR)");
		}
		strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
		siso = &ifr.ifr_Addr;
		printf("--> %s ", iso_ntoa(siso->siso_addr));
	}
	putchar('\n');
}

Perror(cmd)
	char *cmd;
{
	extern int errno;

	fprintf(stderr, "ifconfig: ");
	switch (errno) {

	case ENXIO:
		fprintf(stderr, "%s: no such interface\n", cmd);
		break;

	case EPERM:
		fprintf(stderr, "%s: permission denied\n", cmd);
		break;

	default:
		perror(cmd);
	}
	exit(1);
}

struct	in_addr inet_makeaddr();

#define SIN(x) ((struct sockaddr_in *) &(x))
struct sockaddr_in *sintab[] = {
SIN(ridreq.ifr_addr), SIN(addreq.ifra_addr),
SIN(addreq.ifra_mask), SIN(addreq.ifra_broadaddr)};

in_getaddr(s, which)
	char *s;
{
	register struct sockaddr_in *sin = sintab[which];
	struct hostent *hp;
	struct netent *np;
	int val;

	sin->sin_len = sizeof(*sin);
	if (which != MASK)
		sin->sin_family = AF_INET;

	if ((val = inet_addr(s)) != -1)
		sin->sin_addr.s_addr = val;
	else if (hp = gethostbyname(s))
		bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length);
	else if (np = getnetbyname(s))
		sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
	else {
		fprintf(stderr, "%s: bad value\n", s);
		exit(1);
	}
}

/*
 * Print a value a la the %b format of the kernel's printf
 */
printb(s, v, bits)
	char *s;
	register char *bits;
	register unsigned short v;
{
	register int i, any = 0;
	register char c;

	if (bits && *bits == 8)
		printf("%s=%o", s, v);
	else
		printf("%s=%x", s, v);
	bits++;
	if (bits) {
		putchar('<');
		while (i = *bits++) {
			if (v & (1 << (i-1))) {
				if (any)
					putchar(',');
				any = 1;
				for (; (c = *bits) > 32; bits++)
					putchar(c);
			} else
				for (; *bits > 32; bits++)
					;
		}
		putchar('>');
	}
}

#define SNS(x) ((struct sockaddr_ns *) &(x))
struct sockaddr_ns *snstab[] = {
SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr),
SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)};

xns_getaddr(addr, which)
char *addr;
{
	struct sockaddr_ns *sns = snstab[which];
	struct ns_addr ns_addr();

	sns->sns_family = AF_NS;
	sns->sns_len = sizeof(*sns);
	sns->sns_addr = ns_addr(addr);
	if (which == MASK)
		printf("Attempt to set XNS netmask will be ineffectual\n");
}

#define SISO(x) ((struct sockaddr_iso *) &(x))
struct sockaddr_iso *sisotab[] = {
SISO(iso_ridreq.ifr_Addr), SISO(iso_addreq.ifra_addr),
SISO(iso_addreq.ifra_mask), SISO(iso_addreq.ifra_dstaddr)};

iso_getaddr(addr, which)
char *addr;
{
	struct sockaddr_iso *siso = sisotab[which];
	struct iso_addr *iso_addr();
	siso->siso_addr = *iso_addr(addr);
	if (which == MASK) {
		siso->siso_len = TSEL(siso) - (caddr_t)(siso);
		siso->siso_nlen = 0;
	} else {
	    siso->siso_family = AF_ISO;
	    siso->siso_len =  sizeof(*siso);
	}
}
Commit	Line	Data
0fd5cf4f MK	1	/*
0fd5cf4f MK	2	* Copyright (c) 1983 Regents of the University of California.
40c992d9 KB	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
0fd5cf4f MK	16	*/
0fd5cf4f MK	17
b3eab9f9	18	#ifndef lint
0fd5cf4f MK	19	char copyright[] =
	20	"@(#) Copyright (c) 1983 Regents of the University of California.\n\
	21	All rights reserved.\n";
40c992d9	22	#endif /* not lint */
0fd5cf4f MK	23
0fd5cf4f MK	24	#ifndef lint
b95f7094	25	static char sccsid[] = "@(#)ifconfig.c 4.26 (Berkeley) %G%";
40c992d9	26	#endif /* not lint */
0fd5cf4f	27
b3eab9f9 SL	28	#include <sys/types.h>
	29	#include <sys/socket.h>
	30	#include <sys/ioctl.h>
	31
b3eab9f9	32	#include <net/if.h>
62e9bc4a KS	33	#include <netinet/in.h>
	34
	35	#define NSIP
	36	#include <netns/ns.h>
	37	#include <netns/ns_if.h>
b3eab9f9	38
22b2b267	39	#define EON
59c3b7d8 KS	40	#include <netiso/iso.h>
59c3b7d8 KS	41	#include <netiso/iso_var.h>
22b2b267	42	#include <sys/protosw.h>
59c3b7d8	43
b3eab9f9 SL	44	#include <stdio.h>
	45	#include <errno.h>
	46	#include <ctype.h>
	47	#include <netdb.h>
	48
62e9bc4a	49	extern int errno;
59c3b7d8 KS	50	struct ifreq ifr, ridreq;
	51	struct ifaliasreq addreq;
	52	struct iso_ifreq iso_ridreq;
	53	struct iso_aliasreq iso_addreq;
	54	struct sockaddr_in netmask;
	55
b3eab9f9	56	char name[30];
0fd5cf4f	57	int flags;
f5f09b9d	58	int metric;
dea973a0	59	int setaddr;
62e9bc4a	60	int setipdst;
59c3b7d8	61	int doalias;
22b2b267	62	int clearaddr;
59c3b7d8	63	int newaddr = 1;
b3eab9f9	64	int s;
0fd5cf4f MK	65	extern int errno;
	66
	67	int setifflags(), setifaddr(), setifdstaddr(), setifnetmask();
f5f09b9d	68	int setifmetric(), setifbroadaddr(), setifipdst();
59c3b7d8	69	int notealias(), setsnpaoffset();
b3eab9f9	70
0fd5cf4f	71	#define NEXTARG 0xffffff
b3eab9f9 SL	72
	73	struct cmd {
	74	char *c_name;
0fd5cf4f	75	int c_parameter; /* NEXTARG means next argv */
b3eab9f9 SL	76	int (*c_func)();
	77	} cmds[] = {
	78	{ "up", IFF_UP, setifflags } ,
	79	{ "down", -IFF_UP, setifflags },
	80	{ "trailers", -IFF_NOTRAILERS,setifflags },
	81	{ "-trailers", IFF_NOTRAILERS, setifflags },
1095926d MK	82	{ "arp", -IFF_NOARP, setifflags },
1095926d MK	83	{ "-arp", IFF_NOARP, setifflags },
717eb130 CL	84	{ "debug", IFF_DEBUG, setifflags },
717eb130 CL	85	{ "-debug", -IFF_DEBUG, setifflags },
59c3b7d8 KS	86	{ "alias", IFF_UP, notealias },
	87	{ "-alias", -IFF_UP, notealias },
	88	{ "delete", -IFF_UP, notealias },
a390ced5	89	#ifdef notdef
0fd5cf4f	90	#define EN_SWABIPS 0x1000
a390ced5 SL	91	{ "swabips", EN_SWABIPS, setifflags },
	92	{ "-swabips", -EN_SWABIPS, setifflags },
	93	#endif
0fd5cf4f	94	{ "netmask", NEXTARG, setifnetmask },
f5f09b9d	95	{ "metric", NEXTARG, setifmetric },
59c3b7d8	96	{ "snpaoffset", NEXTARG, setsnpaoffset },
0fd5cf4f	97	{ "broadcast", NEXTARG, setifbroadaddr },
62e9bc4a	98	{ "ipdst", NEXTARG, setifipdst },
b3eab9f9	99	{ 0, 0, setifaddr },
40a42b7f	100	{ 0, 0, setifdstaddr },
b3eab9f9 SL	101	};
b3eab9f9 SL	102
62e9bc4a KS	103	/*
	104	* XNS support liberally adapted from
	105	* code written at the University of Maryland
	106	* principally by James O'Toole and Chris Torek.
	107	*/
62e9bc4a KS	108	int in_status(), in_getaddr();
62e9bc4a KS	109	int xns_status(), xns_getaddr();
59c3b7d8	110	int iso_status(), iso_getaddr();
62e9bc4a KS	111
	112	/* Known address families */
	113	struct afswtch {
	114	char *af_name;
	115	short af_af;
	116	int (*af_status)();
	117	int (*af_getaddr)();
59c3b7d8 KS	118	int af_difaddr;
	119	int af_aifaddr;
	120	caddr_t af_ridreq;
	121	caddr_t af_addreq;
62e9bc4a	122	} afs[] = {
59c3b7d8 KS	123	#define C(x) ((caddr_t) &x)
	124	{ "inet", AF_INET, in_status, in_getaddr,
	125	SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
	126	{ "ns", AF_NS, xns_status, xns_getaddr,
	127	SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
	128	{ "iso", AF_ISO, iso_status, iso_getaddr,
	129	SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) },
	130	{ 0, 0, 0, 0 }
62e9bc4a KS	131	};
	132
	133	struct afswtch afp; /the address family being set or asked about*/
	134
59c3b7d8 KS	135	int testing = 0;
	136	Ioctl(a,b,c) {
	137	int error = 0;
	138	if (testing)
	139	printf("would call ioctl with %x, %x, %x\n", a, b, c);
	140	else
	141	error = ioctl(a, b, c);
	142	return error;
	143	}
	144	#define ioctl(a, b, c) Ioctl(a,b,c)
	145
b3eab9f9 SL	146	main(argc, argv)
	147	int argc;
	148	char *argv[];
	149	{
62e9bc4a	150	int af = AF_INET;
59c3b7d8	151	register struct afswtch *rafp;
37d62ab6	152
b3eab9f9	153	if (argc < 2) {
30078595	154	fprintf(stderr, "usage: ifconfig interface\n%s%s%s%s%s",
f5f09b9d MK	155	"\t[ af [ address [ dest_addr ] ] [ up ] [ down ]",
	156	"[ netmask mask ] ]\n",
	157	"\t[ metric n ]\n",
	158	"\t[ trailers \| -trailers ]\n",
	159	"\t[ arp \| -arp ]\n");
b3eab9f9 SL	160	exit(1);
b3eab9f9 SL	161	}
62e9bc4a	162	argc--, argv++;
63f46c0f	163	strncpy(name, *argv, sizeof(name));
62e9bc4a KS	164	strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
	165	argc--, argv++;
	166	if (argc > 0) {
59c3b7d8 KS	167	for (afp = rafp = afs; rafp->af_name; rafp++)
	168	if (strcmp(rafp->af_name, *argv) == 0) {
	169	afp = rafp; argc--; argv++;
62e9bc4a KS	170	break;
62e9bc4a KS	171	}
59c3b7d8 KS	172	rafp = afp;
59c3b7d8 KS	173	af = ifr.ifr_addr.sa_family = rafp->af_af;
62e9bc4a KS	174	}
62e9bc4a KS	175	s = socket(af, SOCK_DGRAM, 0);
b3eab9f9 SL	176	if (s < 0) {
	177	perror("ifconfig: socket");
	178	exit(1);
	179	}
b3eab9f9 SL	180	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
	181	Perror("ioctl (SIOCGIFFLAGS)");
	182	exit(1);
	183	}
62e9bc4a	184	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
0fd5cf4f	185	flags = ifr.ifr_flags;
f5f09b9d MK	186	if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0)
	187	perror("ioctl (SIOCGIFMETRIC)");
	188	else
	189	metric = ifr.ifr_metric;
b3eab9f9 SL	190	if (argc == 0) {
	191	status();
	192	exit(0);
	193	}
	194	while (argc > 0) {
	195	register struct cmd *p;
	196
	197	for (p = cmds; p->c_name; p++)
	198	if (strcmp(*argv, p->c_name) == 0)
	199	break;
40a42b7f TF	200	if (p->c_name == 0 && setaddr)
40a42b7f TF	201	p++; /* got src, do dst */
0fd5cf4f MK	202	if (p->c_func) {
	203	if (p->c_parameter == NEXTARG) {
	204	(*p->c_func)(argv[1]);
	205	argc--, argv++;
	206	} else
	207	(p->c_func)(argv, p->c_parameter);
	208	}
b3eab9f9 SL	209	argc--, argv++;
b3eab9f9 SL	210	}
62e9bc4a KS	211	if (setipdst && af==AF_NS) {
	212	struct nsip_req rq;
	213	int size = sizeof(rq);
	214
59c3b7d8 KS	215	rq.rq_ns = addreq.ifra_addr;
59c3b7d8 KS	216	rq.rq_ip = addreq.ifra_dstaddr;
62e9bc4a KS	217
	218	if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
	219	Perror("Encapsulation Routing");
22b2b267	220	}
22b2b267 KS	221	if (clearaddr) {
	222	int ret;
	223	strncpy(rafp->af_ridreq, name, sizeof ifr.ifr_name);
	224	if ((ret = ioctl(s, rafp->af_difaddr, rafp->af_ridreq)) < 0) {
	225	if (errno == EADDRNOTAVAIL && (doalias >= 0)) {
	226	/* means no previous address for interface */
	227	} else
	228	Perror("ioctl (SIOCDIFADDR)");
	229	}
62e9bc4a	230	}
59c3b7d8 KS	231	if (newaddr) {
	232	strncpy(rafp->af_addreq, name, sizeof ifr.ifr_name);
	233	if (ioctl(s, rafp->af_aifaddr, rafp->af_addreq) < 0)
	234	Perror("ioctl (SIOCAIFADDR)");
0fd5cf4f	235	}
b3eab9f9 SL	236	exit(0);
b3eab9f9 SL	237	}
59c3b7d8 KS	238	#define RIDADDR 0
	239	#define ADDR 1
	240	#define MASK 2
	241	#define DSTADDR 3
b3eab9f9 SL	242
	243	/ARGSUSED/
	244	setifaddr(addr, param)
	245	char *addr;
62e9bc4a	246	short param;
b3eab9f9	247	{
dea973a0 MK	248	/*
	249	* Delay the ioctl to set the interface addr until flags are all set.
	250	* The address interpretation may depend on the flags,
	251	* and the flags may change when the address is set.
a9575a9a	252	*/
dea973a0	253	setaddr++;
b95f7094	254	if (doalias == 0)
22b2b267	255	clearaddr = 1;
59c3b7d8	256	(*afp->af_getaddr)(addr, (doalias >= 0 ? ADDR : RIDADDR));
b3eab9f9 SL	257	}
b3eab9f9 SL	258
0fd5cf4f MK	259	setifnetmask(addr)
	260	char *addr;
	261	{
59c3b7d8	262	(*afp->af_getaddr)(addr, MASK);
0fd5cf4f MK	263	}
	264
	265	setifbroadaddr(addr)
	266	char *addr;
	267	{
59c3b7d8	268	(*afp->af_getaddr)(addr, DSTADDR);
0fd5cf4f MK	269	}
0fd5cf4f MK	270
62e9bc4a KS	271	setifipdst(addr)
	272	char *addr;
	273	{
59c3b7d8	274	in_getaddr(addr, DSTADDR);
62e9bc4a	275	setipdst++;
22b2b267 KS	276	clearaddr = 0;
22b2b267 KS	277	newaddr = 0;
62e9bc4a	278	}
22b2b267	279	#define rqtosa(x) (&(((struct ifreq *)(afp->x))->ifr_addr))
59c3b7d8 KS	280	/ARGSUSED/
	281	notealias(addr, param)
	282	char *addr;
	283	{
22b2b267 KS	284	if (setaddr && doalias == 0 && param < 0)
	285	bcopy((caddr_t)rqtosa(af_addreq),
	286	(caddr_t)rqtosa(af_ridreq),
	287	rqtosa(af_addreq)->sa_len);
59c3b7d8	288	doalias = param;
22b2b267 KS	289	if (param < 0) {
22b2b267 KS	290	clearaddr = 1;
59c3b7d8	291	newaddr = 0;
22b2b267 KS	292	} else
22b2b267 KS	293	clearaddr = 0;
59c3b7d8 KS	294	}
59c3b7d8 KS	295
40a42b7f TF	296	/ARGSUSED/
	297	setifdstaddr(addr, param)
	298	char *addr;
	299	int param;
	300	{
59c3b7d8	301	(*afp->af_getaddr)(addr, DSTADDR);
40a42b7f TF	302	}
40a42b7f TF	303
2c4ef00e SL	304	setifflags(vname, value)
2c4ef00e SL	305	char *vname;
62e9bc4a	306	short value;
b3eab9f9	307	{
62e9bc4a KS	308	if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
	309	Perror("ioctl (SIOCGIFFLAGS)");
	310	exit(1);
	311	}
	312	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	313	flags = ifr.ifr_flags;
b3eab9f9 SL	314
	315	if (value < 0) {
	316	value = -value;
0fd5cf4f	317	flags &= ~value;
b3eab9f9	318	} else
0fd5cf4f	319	flags \|= value;
0fd5cf4f	320	ifr.ifr_flags = flags;
b3eab9f9	321	if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
2c4ef00e	322	Perror(vname);
b3eab9f9 SL	323	}
b3eab9f9 SL	324
f5f09b9d MK	325	setifmetric(val)
	326	char *val;
	327	{
	328	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	329	ifr.ifr_metric = atoi(val);
	330	if (ioctl(s, SIOCSIFMETRIC, (caddr_t)&ifr) < 0)
	331	perror("ioctl (set metric)");
	332	}
	333
59c3b7d8 KS	334	setsnpaoffset(val)
	335	char *val;
	336	{
	337	iso_addreq.ifra_snpaoffset = atoi(val);
	338	}
	339
f5f09b9d MK	340	#define IFFBITS \
	341	"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP\
	342	"
	343
62e9bc4a KS	344	/*
	345	* Print the status of the interface. If an address family was
	346	* specified, show it and it only; otherwise, show them all.
	347	*/
b3eab9f9	348	status()
62e9bc4a KS	349	{
	350	register struct afswtch *p = afp;
	351	short af = ifr.ifr_addr.sa_family;
	352
f5f09b9d MK	353	printf("%s: ", name);
	354	printb("flags", flags, IFFBITS);
	355	if (metric)
	356	printf(" metric %d", metric);
	357	putchar('\n');
62e9bc4a	358	if ((p = afp) != NULL) {
b14b214d MK	359	(*p->af_status)(1);
b14b214d MK	360	} else for (p = afs; p->af_name; p++) {
62e9bc4a	361	ifr.ifr_addr.sa_family = p->af_af;
b14b214d	362	(*p->af_status)(0);
62e9bc4a KS	363	}
	364	}
	365
b14b214d MK	366	in_status(force)
b14b214d MK	367	int force;
b3eab9f9 SL	368	{
b3eab9f9 SL	369	struct sockaddr_in *sin;
62e9bc4a	370	char *inet_ntoa();
b3eab9f9	371
37d62ab6	372	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
0fd5cf4f	373	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
b14b214d MK	374	if (errno == EADDRNOTAVAIL \|\| errno == EAFNOSUPPORT) {
	375	if (!force)
	376	return;
0fd5cf4f	377	bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
b14b214d MK	378	} else
b14b214d MK	379	perror("ioctl (SIOCGIFADDR)");
0fd5cf4f	380	}
b3eab9f9	381	sin = (struct sockaddr_in *)&ifr.ifr_addr;
5868d993	382	printf("\tinet %s ", inet_ntoa(sin->sin_addr));
b14b214d MK	383	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	384	if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) {
	385	if (errno != EADDRNOTAVAIL)
	386	perror("ioctl (SIOCGIFNETMASK)");
	387	bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
	388	} else
	389	netmask.sin_addr =
	390	((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr;
40a42b7f	391	if (flags & IFF_POINTOPOINT) {
0fd5cf4f MK	392	if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
	393	if (errno == EADDRNOTAVAIL)
	394	bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
	395	else
b14b214d	396	perror("ioctl (SIOCGIFDSTADDR)");
0fd5cf4f	397	}
62e9bc4a	398	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
40a42b7f TF	399	sin = (struct sockaddr_in *)&ifr.ifr_dstaddr;
	400	printf("--> %s ", inet_ntoa(sin->sin_addr));
	401	}
0fd5cf4f	402	printf("netmask %x ", ntohl(netmask.sin_addr.s_addr));
0fd5cf4f	403	if (flags & IFF_BROADCAST) {
0fd5cf4f MK	404	if (ioctl(s, SIOCGIFBRDADDR, (caddr_t)&ifr) < 0) {
0fd5cf4f MK	405	if (errno == EADDRNOTAVAIL)
b14b214d MK	406	bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
	407	else
	408	perror("ioctl (SIOCGIFADDR)");
0fd5cf4f	409	}
62e9bc4a	410	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
0fd5cf4f	411	sin = (struct sockaddr_in *)&ifr.ifr_addr;
b14b214d MK	412	if (sin->sin_addr.s_addr != 0)
b14b214d MK	413	printf("broadcast %s", inet_ntoa(sin->sin_addr));
0fd5cf4f	414	}
f5f09b9d	415	putchar('\n');
b3eab9f9 SL	416	}
b3eab9f9 SL	417
62e9bc4a	418
b14b214d MK	419	xns_status(force)
b14b214d MK	420	int force;
62e9bc4a KS	421	{
62e9bc4a KS	422	struct sockaddr_ns *sns;
62e9bc4a KS	423
	424	close(s);
	425	s = socket(AF_NS, SOCK_DGRAM, 0);
	426	if (s < 0) {
cd2e8e25	427	if (errno == EPROTONOSUPPORT)
63f46c0f	428	return;
62e9bc4a KS	429	perror("ifconfig: socket");
	430	exit(1);
	431	}
	432	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
b14b214d MK	433	if (errno == EADDRNOTAVAIL \|\| errno == EAFNOSUPPORT) {
	434	if (!force)
	435	return;
	436	bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
	437	} else
	438	perror("ioctl (SIOCGIFADDR)");
62e9bc4a KS	439	}
	440	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
	441	sns = (struct sockaddr_ns *)&ifr.ifr_addr;
f5f09b9d	442	printf("\tns %s ", ns_ntoa(sns->sns_addr));
90a22cbc KS	443	if (flags & IFF_POINTOPOINT) { /* by W. Nesheim@Cornell */
	444	if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
	445	if (errno == EADDRNOTAVAIL)
	446	bzero((char *)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
	447	else
	448	Perror("ioctl (SIOCGIFDSTADDR)");
	449	}
	450	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	451	sns = (struct sockaddr_ns *)&ifr.ifr_dstaddr;
	452	printf("--> %s ", ns_ntoa(sns->sns_addr));
	453	}
62e9bc4a KS	454	putchar('\n');
	455	}
	456
59c3b7d8 KS	457	iso_status(force)
	458	int force;
	459	{
	460	struct sockaddr_iso *siso;
	461	struct iso_ifreq ifr;
	462
	463	close(s);
	464	s = socket(AF_ISO, SOCK_DGRAM, 0);
	465	if (s < 0) {
	466	if (errno == EPROTONOSUPPORT)
	467	return;
	468	perror("ifconfig: socket");
	469	exit(1);
	470	}
	471	if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0) {
	472	if (errno == EADDRNOTAVAIL \|\| errno == EAFNOSUPPORT) {
	473	if (!force)
	474	return;
	475	bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
	476	} else
	477	perror("ioctl (SIOCGIFADDR)");
	478	}
	479	strncpy(ifr.ifr_name, name, sizeof ifr.ifr_name);
	480	siso = &ifr.ifr_Addr;
	481	printf("\tiso %s ", iso_ntoa(siso->siso_addr));
	482	if (ioctl(s, SIOCGIFNETMASK, (caddr_t)&ifr) < 0) {
	483	if (errno != EADDRNOTAVAIL)
	484	perror("ioctl (SIOCGIFNETMASK)");
	485	} else {
	486	printf("\n netmask %s ", iso_ntoa(siso->siso_addr));
	487	}
	488	if (flags & IFF_POINTOPOINT) {
	489	if (ioctl(s, SIOCGIFDSTADDR, (caddr_t)&ifr) < 0) {
	490	if (errno == EADDRNOTAVAIL)
	491	bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
	492	else
	493	Perror("ioctl (SIOCGIFDSTADDR)");
	494	}
	495	strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
	496	siso = &ifr.ifr_Addr;
	497	printf("--> %s ", iso_ntoa(siso->siso_addr));
	498	}
	499	putchar('\n');
	500	}
	501
b3eab9f9 SL	502	Perror(cmd)
	503	char *cmd;
	504	{
	505	extern int errno;
	506
	507	fprintf(stderr, "ifconfig: ");
	508	switch (errno) {
	509
	510	case ENXIO:
62e9bc4a	511	fprintf(stderr, "%s: no such interface\n", cmd);
b3eab9f9 SL	512	break;
	513
	514	case EPERM:
9f1b5d96	515	fprintf(stderr, "%s: permission denied\n", cmd);
b3eab9f9 SL	516	break;
	517
	518	default:
	519	perror(cmd);
	520	}
	521	exit(1);
	522	}
	523
	524	struct in_addr inet_makeaddr();
	525
59c3b7d8 KS	526	#define SIN(x) ((struct sockaddr_in *) &(x))
	527	struct sockaddr_in *sintab[] = {
	528	SIN(ridreq.ifr_addr), SIN(addreq.ifra_addr),
	529	SIN(addreq.ifra_mask), SIN(addreq.ifra_broadaddr)};
	530
	531	in_getaddr(s, which)
b3eab9f9	532	char *s;
b3eab9f9	533	{
59c3b7d8	534	register struct sockaddr_in *sin = sintab[which];
b3eab9f9 SL	535	struct hostent *hp;
	536	struct netent *np;
	537	int val;
	538
84ce95b5 KS	539	sin->sin_len = sizeof(*sin);
84ce95b5 KS	540	if (which != MASK)
59c3b7d8	541	sin->sin_family = AF_INET;
84ce95b5 KS	542
84ce95b5 KS	543	if ((val = inet_addr(s)) != -1)
0fd5cf4f	544	sin->sin_addr.s_addr = val;
84ce95b5	545	else if (hp = gethostbyname(s))
b3eab9f9	546	bcopy(hp->h_addr, (char *)&sin->sin_addr, hp->h_length);
84ce95b5	547	else if (np = getnetbyname(s))
b3eab9f9	548	sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
84ce95b5 KS	549	else {
	550	fprintf(stderr, "%s: bad value\n", s);
	551	exit(1);
b3eab9f9	552	}
b3eab9f9 SL	553	}
	554
	555	/*
	556	* Print a value a la the %b format of the kernel's printf
	557	*/
	558	printb(s, v, bits)
	559	char *s;
	560	register char *bits;
	561	register unsigned short v;
	562	{
	563	register int i, any = 0;
	564	register char c;
	565
	566	if (bits && *bits == 8)
	567	printf("%s=%o", s, v);
	568	else
	569	printf("%s=%x", s, v);
	570	bits++;
	571	if (bits) {
	572	putchar('<');
	573	while (i = *bits++) {
	574	if (v & (1 << (i-1))) {
	575	if (any)
	576	putchar(',');
	577	any = 1;
	578	for (; (c = *bits) > 32; bits++)
	579	putchar(c);
	580	} else
	581	for (; *bits > 32; bits++)
	582	;
	583	}
	584	putchar('>');
	585	}
	586	}
62e9bc4a	587
59c3b7d8 KS	588	#define SNS(x) ((struct sockaddr_ns *) &(x))
	589	struct sockaddr_ns *snstab[] = {
	590	SNS(ridreq.ifr_addr), SNS(addreq.ifra_addr),
	591	SNS(addreq.ifra_mask), SNS(addreq.ifra_broadaddr)};
	592
	593	xns_getaddr(addr, which)
62e9bc4a	594	char *addr;
62e9bc4a	595	{
59c3b7d8	596	struct sockaddr_ns *sns = snstab[which];
90a22cbc	597	struct ns_addr ns_addr();
59c3b7d8	598
62e9bc4a	599	sns->sns_family = AF_NS;
ac96969a	600	sns->sns_len = sizeof(*sns);
90a22cbc	601	sns->sns_addr = ns_addr(addr);
59c3b7d8 KS	602	if (which == MASK)
	603	printf("Attempt to set XNS netmask will be ineffectual\n");
	604	}
	605
	606	#define SISO(x) ((struct sockaddr_iso *) &(x))
	607	struct sockaddr_iso *sisotab[] = {
	608	SISO(iso_ridreq.ifr_Addr), SISO(iso_addreq.ifra_addr),
	609	SISO(iso_addreq.ifra_mask), SISO(iso_addreq.ifra_dstaddr)};
	610
	611	iso_getaddr(addr, which)
	612	char *addr;
	613	{
	614	struct sockaddr_iso *siso = sisotab[which];
	615	struct iso_addr *iso_addr();
	616	siso->siso_addr = *iso_addr(addr);
	617	if (which == MASK) {
84ce95b5	618	siso->siso_len = TSEL(siso) - (caddr_t)(siso);
59c3b7d8 KS	619	siso->siso_nlen = 0;
	620	} else {
	621	siso->siso_family = AF_ISO;
	622	siso->siso_len = sizeof(*siso);
	623	}
62e9bc4a	624	}