BSD 4_3 release

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

diff --git a/usr/src/etc/ifconfig.c b/usr/src/etc/ifconfig.c
index 377ea2c..ff2b71e 100644 (file)
--- a/usr/src/etc/ifconfig.c
+++ b/usr/src/etc/ifconfig.c
@@ -1,30 +1,59 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+

 #ifndef lint
 #ifndef lint

-static char sccsid[] = "@(#)ifconfig.c 4.5 (Berkeley) 11/2/83";
-#endif
+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 4.18 (Berkeley) 5/22/86";
+#endif not lint

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

-#include <netinet/in.h>

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

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

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

+extern int errno;

 struct ifreq ifr;
 struct sockaddr_in sin = { AF_INET };
 struct ifreq ifr;
 struct sockaddr_in sin = { AF_INET };

+struct sockaddr_in broadaddr;
+struct sockaddr_in netmask = { AF_INET };
+struct sockaddr_in ipdst = { AF_INET };

 char   name[30];
 int    flags;
 char   name[30];
 int    flags;

+int    metric;
+int    setaddr;
+int    setmask;
+int    setbroadaddr;
+int    setipdst;

 int    s;
 int    s;

+extern int errno;

 
 

-int    setifflags(), setifaddr();
+int    setifflags(), setifaddr(), setifdstaddr(), setifnetmask();
+int    setifmetric(), setifbroadaddr(), setifipdst();
+
+#define        NEXTARG         0xffffff

 
 struct cmd {
        char    *c_name;
 
 struct cmd {
        char    *c_name;

-       int     c_parameter;
+       int     c_parameter;            /* NEXTARG means next argv */

        int     (*c_func)();
 } cmds[] = {
        { "up",         IFF_UP,         setifflags } ,
        int     (*c_func)();
 } cmds[] = {
        { "up",         IFF_UP,         setifflags } ,


@@ -36,39 +65,85 @@ struct      cmd {
        { "debug",      IFF_DEBUG,      setifflags },
        { "-debug",     -IFF_DEBUG,     setifflags },
 #ifdef notdef
        { "debug",      IFF_DEBUG,      setifflags },
        { "-debug",     -IFF_DEBUG,     setifflags },
 #ifdef notdef

-#define        EN_SWABIPS      0x100
+#define        EN_SWABIPS      0x1000

        { "swabips",    EN_SWABIPS,     setifflags },
        { "-swabips",   -EN_SWABIPS,    setifflags },
 #endif
        { "swabips",    EN_SWABIPS,     setifflags },
        { "-swabips",   -EN_SWABIPS,    setifflags },
 #endif

+       { "netmask",    NEXTARG,        setifnetmask },
+       { "metric",     NEXTARG,        setifmetric },
+       { "broadcast",  NEXTARG,        setifbroadaddr },
+       { "ipdst",      NEXTARG,        setifipdst },

        { 0,            0,              setifaddr },
        { 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();
+
+/* Known address families */
+struct afswtch {
+       char *af_name;
+       short af_af;
+       int (*af_status)();
+       int (*af_getaddr)();
+} afs[] = {
+       { "inet",       AF_INET,        in_status,      in_getaddr },
+       { "ns",         AF_NS,          xns_status,     xns_getaddr },
+       { 0,            0,              0,              0 }
+};
+
+struct afswtch *afp;   /*the address family being set or asked about*/
+

 main(argc, argv)
        int argc;
        char *argv[];
 {
 main(argc, argv)
        int argc;
        char *argv[];
 {

+       int af = AF_INET;

 
        if (argc < 2) {
 
        if (argc < 2) {

-               fprintf(stderr, "usage: ifconfig interface %s %s %s\n",
-                   "[ address ] [ up ] [ down ]",
-                   "[ trailers | -trailers ]",
-                   "[ arp | -arp ]");
+               fprintf(stderr, "usage: ifconfig interface\n%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);
        }
                exit(1);
        }

-       s = socket(AF_INET, SOCK_DGRAM, 0);
+       argc--, argv++;
+       strncpy(name, *argv, sizeof(name));
+       strncpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
+       argc--, argv++;
+       if (argc > 0) {
+               struct afswtch *myafp;
+               
+               for (myafp = afp = afs; myafp->af_name; myafp++)
+                       if (strcmp(myafp->af_name, *argv) == 0) {
+                               afp = myafp; argc--; argv++;
+                               break;
+                       }
+               af = ifr.ifr_addr.sa_family = afp->af_af;
+       }
+       s = socket(af, SOCK_DGRAM, 0);

        if (s < 0) {
                perror("ifconfig: socket");
                exit(1);
        }
        if (s < 0) {
                perror("ifconfig: socket");
                exit(1);
        }

-       argc--, argv++;
-       strcpy(name, *argv);
-       strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));

        if (ioctl(s, SIOCGIFFLAGS, (caddr_t)&ifr) < 0) {
                Perror("ioctl (SIOCGIFFLAGS)");
                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;
        flags = ifr.ifr_flags;

-       argc--, argv++;
+       if (ioctl(s, SIOCGIFMETRIC, (caddr_t)&ifr) < 0)
+               perror("ioctl (SIOCGIFMETRIC)");
+       else
+               metric = ifr.ifr_metric;

        if (argc == 0) {
                status();
                exit(0);
        if (argc == 0) {
                status();
                exit(0);


@@ -79,29 +154,109 @@ main(argc, argv)
                for (p = cmds; p->c_name; p++)
                        if (strcmp(*argv, p->c_name) == 0)
                                break;
                for (p = cmds; p->c_name; p++)
                        if (strcmp(*argv, p->c_name) == 0)
                                break;

-               if (p->c_func)
-                       (*p->c_func)(*argv, p->c_parameter);
+               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++;
        }
                argc--, argv++;
        }

+       if ((setmask || setaddr) && (af == AF_INET)) {
+               /*
+                * If setting the address and not the mask,
+                * clear any existing mask and the kernel will then
+                * assign the default.  If setting both,
+                * set the mask first, so the address will be
+                * interpreted correctly.
+                */
+               ifr.ifr_addr = *(struct sockaddr *)&netmask;
+               if (ioctl(s, SIOCSIFNETMASK, (caddr_t)&ifr) < 0)
+                       Perror("ioctl (SIOCSIFNETMASK)");
+       }
+       if (setipdst && af==AF_NS) {
+               struct nsip_req rq;
+               int size = sizeof(rq);
+
+               rq.rq_ns = *(struct sockaddr *) &sin;
+               rq.rq_ip = *(struct sockaddr *) &ipdst;
+
+               if (setsockopt(s, 0, SO_NSIP_ROUTE, &rq, size) < 0)
+                       Perror("Encapsulation Routing");
+               setaddr = 0;
+       }
+       if (setaddr) {
+               ifr.ifr_addr = *(struct sockaddr *) &sin;
+               if (ioctl(s, SIOCSIFADDR, (caddr_t)&ifr) < 0)
+                       Perror("ioctl (SIOCSIFADDR)");
+       }
+       if (setbroadaddr) {
+               ifr.ifr_addr = *(struct sockaddr *)&broadaddr;
+               if (ioctl(s, SIOCSIFBRDADDR, (caddr_t)&ifr) < 0)
+                       Perror("ioctl (SIOCSIFBRDADDR)");
+       }

        exit(0);
 }
 
 /*ARGSUSED*/
 setifaddr(addr, param)
        exit(0);
 }
 
 /*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++;
+       (*afp->af_getaddr)(addr, &sin);
+}
+
+setifnetmask(addr)
+       char *addr;
+{
+       in_getaddr(addr, &netmask);
+       setmask++;
+}
+
+setifbroadaddr(addr)
+       char *addr;
+{
+       (*afp->af_getaddr)(addr, &broadaddr);
+       setbroadaddr++;
+}
+
+setifipdst(addr)
+       char *addr;
+{
+       in_getaddr(addr, &ipdst);
+       setipdst++;
+}
+
+/*ARGSUSED*/
+setifdstaddr(addr, param)

        char *addr;
        int param;
 {
 
        char *addr;
        int param;
 {
 

-       getaddr(addr, (struct sockaddr_in *)&ifr.ifr_addr);
-       strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
-       if (ioctl(s, SIOCSIFADDR, (caddr_t)&ifr) < 0)
-               Perror("ioctl (SIOCSIFADDR)");
+       (*afp->af_getaddr)(addr, &ifr.ifr_addr);
+       if (ioctl(s, SIOCSIFDSTADDR, (caddr_t)&ifr) < 0)
+               Perror("ioctl (SIOCSIFDSTADDR)");

 }
 
 setifflags(vname, value)
        char *vname;
 }
 
 setifflags(vname, value)
        char *vname;

-       int value;
+       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;
 
        if (value < 0) {
                value = -value;


@@ -109,23 +264,134 @@ setifflags(vname, value)
        } else
                flags |= value;
        ifr.ifr_flags = flags;
        } else
                flags |= value;
        ifr.ifr_flags = flags;

-       strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));

        if (ioctl(s, SIOCSIFFLAGS, (caddr_t)&ifr) < 0)
                Perror(vname);
 }
 
        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)");
+}
+
+#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()
 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;
 {
        struct sockaddr_in *sin;

+       char *inet_ntoa();

 
        strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));
 
        strncpy(ifr.ifr_name, name, sizeof (ifr.ifr_name));

-       if (ioctl(s, SIOCGIFADDR, (caddr_t)&ifr) < 0)
-               Perror("ioctl (SIOCGIFADDR)");
+       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;
        sin = (struct sockaddr_in *)&ifr.ifr_addr;

-       printf("%s: %s ", name, inet_ntoa(sin->sin_addr));
-#define        IFFBITS \
-"\020\1UP\2BROADCAST\3DEBUG\4ROUTE\5POINTOPOINT\6NOTRAILERS\7RUNNING\10NOARP"
-       printb("flags", flags, IFFBITS); putchar('\n');
+       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 == EAFNOSUPPORT)
+                       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');

 }
 
 Perror(cmd)
 }
 
 Perror(cmd)


@@ -137,12 +403,11 @@ Perror(cmd)
        switch (errno) {
 
        case ENXIO:
        switch (errno) {
 
        case ENXIO:

-               fprintf(stderr, "%s: ", cmd);
-               fprintf(stderr, "no such interface\n");
+               fprintf(stderr, "%s: no such interface\n", cmd);

                break;
 
        case EPERM:
                break;
 
        case EPERM:

-               fprintf(stderr, "%s: permission denied\n");
+               fprintf(stderr, "%s: permission denied\n", cmd);

                break;
 
        default:
                break;
 
        default:


@@ -153,14 +418,21 @@ Perror(cmd)
 
 struct in_addr inet_makeaddr();
 
 
 struct in_addr inet_makeaddr();
 

-getaddr(s, sin)
+in_getaddr(s, saddr)

        char *s;
        char *s;

-       struct sockaddr_in *sin;
+       struct sockaddr *saddr;

 {
 {

+       register struct sockaddr_in *sin = (struct sockaddr_in *)saddr;

        struct hostent *hp;
        struct netent *np;
        int val;
 
        struct hostent *hp;
        struct netent *np;
        int val;
 

+       sin->sin_family = AF_INET;
+       val = inet_addr(s);
+       if (val != -1) {
+               sin->sin_addr.s_addr = val;
+               return;
+       }

        hp = gethostbyname(s);
        if (hp) {
                sin->sin_family = hp->h_addrtype;
        hp = gethostbyname(s);
        if (hp) {
                sin->sin_family = hp->h_addrtype;


@@ -173,17 +445,6 @@ getaddr(s, sin)
                sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
                return;
        }
                sin->sin_addr = inet_makeaddr(np->n_net, INADDR_ANY);
                return;
        }

-       sin->sin_family = AF_INET;
-       val = inet_addr(s);
-       if (val != -1) {
-               sin->sin_addr.s_addr = val;
-               return;
-       }
-       val = inet_network(s);
-       if (val != -1) {
-               sin->sin_addr = inet_makeaddr(val, INADDR_ANY);
-               return;
-       }

        fprintf(stderr, "%s: bad value\n", s);
        exit(1);
 }
        fprintf(stderr, "%s: bad value\n", s);
        exit(1);
 }


@@ -220,3 +481,13 @@ printb(s, v, bits)
                putchar('>');
        }
 }
                putchar('>');
        }
 }

+
+xns_getaddr(addr, saddr)
+char *addr;
+struct sockaddr *saddr;
+{
+       struct sockaddr_ns *sns = (struct sockaddr_ns *)saddr;
+       struct ns_addr ns_addr();
+       sns->sns_family = AF_NS;
+       sns->sns_addr = ns_addr(addr);
+}