home *** CD-ROM | disk | FTP | other *** search
- static char rcsid[] =
- "$Id: ifconfig.c,v 2.8 1993/08/10 20:46:23 jraja Exp $";
- /*
- * ifconfig.c --- Configure Network Interfaces
- *
- * Author: Pekka Pessi <Pekka.Pessi@hut.fi>
- *
- * Copyright © 1993 AmiTCP/IP Group, <amitcp-group@hut.fi>
- * Helsinki University of Technology, Finland.
- * All rights reserved.
- *
- * Created : Sat May 15 04:12:15 1993 ppessi
- * Last modified: Tue Aug 10 23:41:32 1993 jraja
- */
-
- static const char version[] = "$VER: ifconfig 2.0 (13.8.93)";
-
- char copyright[] =
- "@(#) Copyright © 1983 The Regents of the University of California.\n"
- "All rights reserved.\n"
- "Copyright © 1993 AmiTCP/IP Group, <amitcp-group@hut.fi>\n"
- "Helsinki University of Technology, Finland.\n"
- "All rights reserved.\n";
-
- /****** netutil.doc/ifconfig ************************************************
- *
- * NAME
- * ifconfig - configure network interface parameters
- *
- * SYNOPSIS
- * ifconfig interface address_family [address [dest_address]] [params]
- * ifconfig interface [address_family]
- *
- * DESCRIPTION
- * ifconfig is used to assign an address to a network interface and/or
- * configure network interface parameters. ifconfig must be used at
- * boot time to define the network address of each interface present on
- * a machine. It can also be used at other times to redefine an
- * interface's address or other operating parameters.
- *
- * PARAMETERS
- * interface A string of the unit name. The device name (e.g.
- * 'a2065.device') concatenated with a slash ('/') and the
- * unit number ('11'), for example 'a2065.device/11' is a
- * legal unit name.
- *
- * address_family
- * Name of protocol on which naming scheme is based. An
- * interface can receive transmissions in differing
- * protocols, each of which may require separate naming
- * schemes. Therefore, it is necessary to specify the
- * address_family, which may affect interpretation of the
- * remaining parameters on the command line. The only
- * address family currently supported is inet (DARPA-
- * Internet family).
- *
- * address Either a host name present in the host name database,
- * (SEE hosts), or a DARPA Internet address
- * expressed in Internet standard "dot notation". The
- * host number can be omitted on 10-Mbyte/second Ethernet
- * interfaces (which use the hardware physical address),
- * and on interfaces other than the first.
- *
- * dest_address Address of destination system. Consists of either a
- * host name present in the host name database, hosts(4),
- * or a DARPA Internet address expressed in Internet
- * standard "dot notation".
- *
- * SWITCHES
- * The following operating parameters can be specified:
- *
- * up Mark an interface "up". Enables interface after an
- * "ifconfig down." Occurs automatically when setting the
- * address on an interface. Setting this flag has no
- * effect if the hardware is "down".
- *
- * down Mark an interface "down". When an interface is
- * marked "down", the system will not attempt to
- * transmit messages through that interface. If
- * possible, the interface will be reset to disable
- * reception as well. This action does not
- * automatically disable routes using the interface.
- *
- * arp Enable the use of Address Resolution Protocol in
- * mapping between network level addresses and link-level
- * addresses (default).
- *
- * -arp Disable the use of Address Resolution Protocol.
- *
- * metric n Set the routing metric of the interface to n,
- * default 0. The routing metric is used by the routing
- * protocol (see gated(1m)). Higher metrics have the
- * effect of making a route less favorable; metrics are
- * counted as additional hops to the destination network
- * or host.
- *
- * debug Enable driver-dependent debugging code. This usually
- * turns on extra console error logging.
- *
- * -debug Disable driver-dependent debugging code.
- *
- * netmask mask (Inet only) Specify how much of the address to reserve
- * for subdividing networks into sub-networks. mask
- * includes the network part of the local address, and the
- * subnet part which is taken from the host field of the
- * address. mask can be specified as a single hexadecimal
- * number with a leading 0x, with a dot-notation Internet
- * address, or with a pseudo- network name listed in the
- * network table networks(4). mask contains 1's for each
- * bit position in the 32-bit address that are to be used
- * for the network and subnet parts, and 0's for the host
- * part. mask should contain at least the standard
- * network portion, and the subnet field should be
- * contiguous with the network portion.
- *
- * broadcast (Inet only) Specify the address that represents
- * broadcasts to the network. The default broadcast
- * address is the address with a host part of all 1's.
- *
- * The command:
- *
- * ifconfig interface/unit
- *
- * with no optional command arguments supplied displays the current
- * configuration for interface. If address_family is specified,
- * ifconfig reports only the details specific to that address family.
- *
- * DIAGNOSTICS
- *
- * Messages indicating that the specified interface does not exist, the
- * requested address is unknown, or the user is not privileged and
- * tried to alter an interface's configuration.
- *
- * EXAMPLES
- *
- * ifconfig lo/0 127.0.0.1
- *
- * This command marks internal loopback device "UP", and
- * attach an inet address 127.0.0.1 to it.
- *
- * ifconfig cslip.device/0 inet 193.102.4.144 193.102.4.129
- *
- * This command starts the CSLIP driver, attach an
- * address 193.102.4.144 (our internet address) and a
- * destination address 193.102.4.129 (the internet
- * address of the host you are connecting) to it.
- *
- * ifconfig devs:network/a2065.device/0 inet 193.124.100.64 +
- * netmask 255.255.255.192 -arp
- *
- * This command loads an ethernet driver for the
- * Commodore A2065 Ethernet adapter unit 0, marks it
- * "up", disables ARP protocol for it, attaches an inet
- * address 193.124.100.65 to it and sets its netmask to
- * 255.255.255.192. A bitwise logical and of netmask and
- * address for the interface forms a subnet address, in
- * this case 193.124.100.64. All packets aimed to hosts
- * with same subnet address (that is hosts 193.124.100.64
- * - 193.124.100.127) are routed to this interface.
- *
- * SEE ALSO
- * netstat, hosts, arp, "net/if.h", "net/sana2tags.h"
- *
- *****************************************************************************
- *
- */
-
- /*
- * Copyright © 1983 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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.
- */
-
- #ifdef AMIGA
- #if __SASC
- #include <proto/socket.h>
- #elif __GNUC__
- #include <inline/socket.h>
- #else
- #include <clib/socket_protos.h>
- #endif
- #define ioctl IoctlSocket
- #endif /* AMIGA */
-
- #include <sys/param.h>
- #include <sys/socket.h>
- #include <sys/ioctl.h>
-
- #include <net/if.h>
- #include <netinet/in.h>
- #include <arpa/inet.h>
-
- #ifdef NS
- #define NSIP
- #include <netns/ns.h>
- #include <netns/ns_if.h>
- #endif
-
- #include <netdb.h>
-
- #ifdef ISO
- #define EON
- #include <netiso/iso.h>
- #include <netiso/iso_var.h>
- #endif
-
- #ifdef notyet
- #include <unistd.h>
- #endif
- #include <stdio.h>
- #include <errno.h>
- #include <ctype.h>
- #include <stdlib.h>
- #include <string.h>
-
- struct ifreq ifr, ridreq;
- struct ifaliasreq addreq;
- #ifdef ISO
- struct iso_ifreq iso_ridreq;
- struct iso_aliasreq iso_addreq;
- #endif
- struct sockaddr_in netmask;
-
- char name[1024];
- int flags;
- int metric;
- int setaddr;
- int setipdst;
- int doalias;
- int clearaddr;
- int newaddr = 1;
- int s;
- extern int errno;
-
- #ifdef NS
- int nsellength = 1;
- #endif
-
- int setifflags(), setifaddr(), setifdstaddr(), setifnetmask();
- int setifmetric(), setifbroadaddr(), setifipdst();
- int notealias(), setsnpaoffset(), setnsellength();
-
- #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 },
- { "broadcast", NEXTARG, setifbroadaddr },
- { "ipdst", NEXTARG, setifipdst },
- #ifdef ISO
- { "snpaoffset", NEXTARG, setsnpaoffset },
- { "nsellength", NEXTARG, setnsellength },
- #endif
- { 0, 0, setifaddr },
- { 0, 0, setifdstaddr },
- };
-
- int in_status(), in_getaddr();
- #ifdef NS
- /*
- * XNS support liberally adapted from
- * code written at the University of Maryland
- * principally by James O'Toole and Chris Torek.
- */
- int xns_status(), xns_getaddr();
- #endif
- #ifdef ISO
- int iso_status(), iso_getaddr();
- #endif
-
- /* 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) },
- #ifdef NS
- { "ns", AF_NS, xns_status, xns_getaddr,
- SIOCDIFADDR, SIOCAIFADDR, C(ridreq), C(addreq) },
- #endif
- #ifdef ISO
- { "iso", AF_ISO, iso_status, iso_getaddr,
- SIOCDIFADDR_ISO, SIOCAIFADDR_ISO, C(iso_ridreq), C(iso_addreq) },
- #endif
- { 0, 0, 0, 0 }
- };
-
- struct afswtch *afp; /*the address family being set or asked about*/
-
- 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++;
- }
- #ifdef ISO
- if (af == AF_ISO)
- adjust_nsellength();
- #endif
- #ifdef NS
- 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");
- }
- #endif
- 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)");
- }
- #ifdef ISO
- setsnpaoffset(val)
- char *val;
- {
- iso_addreq.ifra_snpaoffset = atoi(val);
- }
- #endif
- #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;
-
- 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');
- }
-
- #ifdef NS
- 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');
- }
- #endif
- #ifdef ISO
- 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);
- }
- bzero((caddr_t)&ifr, sizeof(ifr));
- strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
- if (ioctl(s, SIOCGIFADDR_ISO, (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_ISO)");
- exit(1);
- }
- }
- 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_ISO, (caddr_t)&ifr) < 0) {
- if (errno != EADDRNOTAVAIL)
- perror("ioctl (SIOCGIFNETMASK_ISO)");
- } else {
- printf(" netmask %s ", iso_ntoa(&siso->siso_addr));
- }
- if (flags & IFF_POINTOPOINT) {
- if (ioctl(s, SIOCGIFDSTADDR_ISO, (caddr_t)&ifr) < 0) {
- if (errno == EADDRNOTAVAIL)
- bzero((char *)&ifr.ifr_Addr, sizeof(ifr.ifr_Addr));
- else
- Perror("ioctl (SIOCGIFDSTADDR_ISO)");
- }
- strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
- siso = &ifr.ifr_Addr;
- printf("--> %s ", iso_ntoa(&siso->siso_addr));
- }
- putchar('\n');
- }
- #endif
-
- 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);
- }
-
- #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('>');
- }
- }
-
- #ifdef NS
- #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");
- }
- #endif
-
- #ifdef ISO
- #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;
- {
- register 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_len = sizeof(*siso);
- siso->siso_family = AF_ISO;
- }
- }
-
- setnsellength(val)
- char *val;
- {
- nsellength = atoi(val);
- if (nsellength < 0) {
- fprintf(stderr, "Negative NSEL length is absurd\n");
- exit (1);
- }
- if (afp == 0 || afp->af_af != AF_ISO) {
- fprintf(stderr, "Setting NSEL length valid only for iso\n");
- exit (1);
- }
- }
-
- fixnsel(s)
- register struct sockaddr_iso *s;
- {
- if (s->siso_family == 0)
- return;
- s->siso_tlen = nsellength;
- }
-
- adjust_nsellength()
- {
- fixnsel(sisotab[RIDADDR]);
- fixnsel(sisotab[ADDR]);
- fixnsel(sisotab[DSTADDR]);
- }
- #endif
-