2 * sys-osf.c - System-dependent procedures for setting up
3 * PPP interfaces on OSF/1 systems which use the STREAMS ppp interface.
5 * Copyright (c) 1989 Carnegie Mellon University.
8 * Redistribution and use in source and binary forms are permitted
9 * provided that the above copyright notice and this paragraph are
10 * duplicated in all such forms and that any documentation,
11 * advertising materials, and other materials related to such
12 * distribution and use acknowledge that the software was developed
13 * by Carnegie Mellon University. The name of the
14 * University may not be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
18 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 static char rcsid[] = "$Id: sys-osf.c,v 1.5 1995/10/27 03:47:32 paulus Exp $";
40 #include <sys/types.h>
41 #include <sys/socket.h>
43 #include <sys/stream.h>
44 #include <sys/stropts.h>
47 #include <net/ppp_defs.h>
48 #include <net/ppp_str.h>
49 #include <net/route.h>
50 #include <net/if_arp.h>
51 #include <netinet/in.h>
56 #define ifr_mtu ifr_metric
59 #define MAXMODULES 10 /* max number of module names to save */
60 static struct modlist {
61 char modname[FMNAMESZ+1];
62 } str_modules[MAXMODULES];
63 static int str_module_count = 0;
64 static int pushed_ppp;
65 static int closed_stdio;
67 static int restore_term; /* 1 => we've munged the terminal */
68 static struct termios inittermios; /* Initial TTY termios */
69 static struct winsize wsinfo; /* Initial window size info */
70 static int initfdflags = -1; /* Initial file descriptor flags for fd */
72 static int sockfd; /* socket for doing interface ioctls */
74 int ttyfd = -1; /* Original ttyfd if we did a streamify() */
76 static int if_is_up; /* Interface has been marked up */
77 static u_int32_t default_route_gateway; /* Gateway for default route added */
78 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
80 /* Prototypes for procedures local to this file. */
81 static int translate_speed __P((int));
82 static int baud_rate_of __P((int));
83 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
87 * sys_init - System-dependent initialization.
92 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
93 setlogmask(LOG_UPTO(LOG_INFO));
95 setlogmask(LOG_UPTO(LOG_DEBUG));
97 /* Get an internet socket for doing socket ioctl's on. */
98 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
99 syslog(LOG_ERR, "Couldn't create IP socket: %m");
105 * sys_cleanup - restore any system state we modified before exiting:
106 * mark the interface down, delete default route and/or proxy arp entry.
107 * This should call die() because it's called from die().
115 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
116 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0
117 && ((ifr.ifr_flags & IFF_UP) != 0)) {
118 ifr.ifr_flags &= ~IFF_UP;
119 ioctl(sockfd, SIOCSIFFLAGS, &ifr);
123 if (default_route_gateway)
124 cifdefaultroute(0, default_route_gateway);
126 cifproxyarp(0, proxy_arp_addr);
130 * note_debug_level - note a change in the debug level.
136 syslog(LOG_INFO, "Debug turned ON, Level %d", debug);
137 setlogmask(LOG_UPTO(LOG_DEBUG));
139 setlogmask(LOG_UPTO(LOG_WARNING));
144 * daemon - Detach us from the terminal session.
147 daemon(nochdir, noclose)
148 int nochdir, noclose;
152 if ((pid = fork()) < 0)
155 exit(0); /* parent dies */
160 fclose(stdin); /* don't need stdin, stdout, stderr */
168 char pipename[] = "/dev/streams/pipe";
171 * ppp_available - check if this kernel supports PPP.
178 fd = open(pipename, O_RDONLY, 0);
180 return 0; /* can't find out - assume we don't have ppp */
181 ret = ioctl(fd, I_FIND, "pppasync") >= 0;
188 * streampipe -- Opens a STREAMS based pipe. Used by streamify().
192 streampipe(int fd[2])
194 if ((fd[0]=open(pipename, O_RDWR)) == -1)
196 else if ((fd[1]=open(pipename, O_RDWR)) == -1) {
199 } else if (ioctl(fd[0], I_PIPE, fd[1]) != 0) {
204 return(ioctl(fd[0], I_PUSH, "pipemod"));
209 * streamify -- Needed for DEC OSF/1, since tty devices are not STREAMS
210 * modules (but ptys are, and pipes can be).
213 #define BUFFSIZE 1000 /* Size of buffer for streamify() */
220 int ret, fret, rret, maxfd;
221 static char buffer[BUFFSIZE];
224 if (streampipe(fdes) != 0)
225 syslog(LOG_ERR, "streampipe(): %m\n");
226 else if (isastream(fdes[0]) == 1) {
227 if ((fret=fork()) < 0) {
228 syslog(LOG_ERR, "fork(): %m\n");
229 } else if (fret == 0) {
230 /* Process to forward things from pipe to tty */
231 sigemptyset(&(sa.sa_mask));
232 sa.sa_handler = SIG_DFL;
234 sigaction(SIGHUP, &sa, NULL); /* Go back to default actions */
235 sigaction(SIGINT, &sa, NULL); /* for changed signals. */
236 sigaction(SIGTERM, &sa, NULL);
237 sigaction(SIGCHLD, &sa, NULL);
238 sigaction(SIGUSR1, &sa, NULL);
239 sigaction(SIGUSR2, &sa, NULL);
242 maxfd = (fdes[1]>fd)?fdes[1]:fd;
245 FD_SET(fdes[1], &readfds);
246 FD_SET(fd, &readfds);
247 ret = select(maxfd+1, &readfds, NULL, NULL, NULL);
248 if (FD_ISSET(fd, &readfds)) {
249 rret = read(fd, buffer, BUFFSIZE);
251 MAINDEBUG((LOG_DEBUG, "slave died: EOF on tty."));
254 write(fdes[1], buffer, rret);
257 if (FD_ISSET(fdes[1], &readfds)) {
258 rret = read(fdes[1], buffer, BUFFSIZE);
260 MAINDEBUG((LOG_DEBUG, "slave died: EOF on pipe."));
263 write(fd, buffer, rret);
279 * establish_ppp - Turn the serial port into a ppp interface.
286 if (isastream(fd) != 1) {
287 if ((fd=streamify(fd)) < 0) {
288 syslog(LOG_ERR, "Couldn't get a STREAMS module!\n");
293 /* go through and save the name of all the modules, then pop em */
295 if (ioctl(fd, I_LOOK, str_modules[str_module_count].modname) < 0 ||
296 ioctl(fd, I_POP, 0) < 0)
298 MAINDEBUG((LOG_DEBUG, "popped stream module : %s",
299 str_modules[str_module_count].modname));
303 /* now push the async/fcs module */
304 if (ioctl(fd, I_PUSH, "pppasync") < 0) {
305 syslog(LOG_ERR, "ioctl(I_PUSH, ppp_async): %m");
308 /* push the compress module */
309 if (ioctl(fd, I_PUSH, "pppcomp") < 0) {
310 syslog(LOG_WARNING, "ioctl(I_PUSH, ppp_comp): %m");
312 /* finally, push the ppp_if module that actually handles the */
313 /* network interface */
314 if (ioctl(fd, I_PUSH, "pppif") < 0) {
315 syslog(LOG_ERR, "ioctl(I_PUSH, ppp_if): %m");
319 /* read mode, message non-discard mode */
320 if (ioctl(fd, I_SRDOPT, RMSGN|RPROTNORM) < 0) {
321 syslog(LOG_ERR, "ioctl(I_SRDOPT, RMSGN): %m");
325 * Find out which interface we were given.
326 * (ppp_if handles this ioctl)
328 if (ioctl(fd, (int)SIOCGETU, &ifunit) < 0) {
329 syslog(LOG_ERR, "ioctl(SIOCGETU): %m");
333 /* Set debug flags in driver */
334 if (ioctl(fd, (int)SIOCSIFDEBUG, &kdebugflag) < 0) {
335 syslog(LOG_ERR, "ioctl(SIOCSIFDEBUG): %m");
338 /* close stdin, stdout, stderr if they might refer to the device */
339 if (default_device && !closed_stdio) {
342 for (i = 0; i <= 2; ++i)
343 if (i != fd && i != sockfd)
349 * Set device for non-blocking reads.
351 if ((initfdflags = fcntl(fd, F_GETFL)) == -1
352 || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
353 syslog(LOG_WARNING, "Couldn't set device to non-blocking mode: %m");
357 /* Debugging routine.... */
359 void prstrstack(int fd)
362 struct str_mlist names[20];
365 sl.sl_modlist = names;
367 ret = ioctl(fd, I_LIST, &sl);
370 MAINDEBUG((LOG_DEBUG, "Current streams modules:\n"));
371 for (i=0; i<sl.sl_nmods; i++)
372 MAINDEBUG((LOG_DEBUG," %s\n", names[i].l_name));
374 MAINDEBUG((LOG_DEBUG,"I_LIST ioctl() failed.\n"));
380 * disestablish_ppp - Restore the serial port to normal operation.
381 * It attempts to reconstruct the stream with the previously popped
382 * modules. This shouldn't call die() because it's called from die().
390 /* Reset non-blocking mode on the file descriptor. */
391 if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
392 syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
396 /* we can't push or pop modules after the stream has hung up */
397 str_module_count = 0;
398 restore_term = 0; /* nor can we fix up terminal settings */
404 * Check whether the link seems not to be 8-bit clean.
406 if (ioctl(fd, (int)SIOCGIFDEBUG, (caddr_t) &flags) == 0) {
408 switch (~flags & PAI_FLAGS_HIBITS) {
410 s = "bit 7 set to 1";
413 s = "bit 7 set to 0";
415 case PAI_FLAGS_PAR_EVEN:
418 case PAI_FLAGS_PAR_ODD:
423 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
424 syslog(LOG_WARNING, "All received characters had %s", s);
428 while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
432 for (; str_module_count > 0; str_module_count--) {
433 if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
435 syslog(LOG_WARNING, "str_restore: couldn't push module %s: %m",
436 str_modules[str_module_count-1].modname);
438 MAINDEBUG((LOG_INFO, "str_restore: pushed module %s",
439 str_modules[str_module_count-1].modname));
454 * List of valid speeds.
457 int speed_int, speed_val;
529 * Translate from bits/second to a speed_t.
535 struct speed *speedp;
539 for (speedp = speeds; speedp->speed_int; speedp++)
540 if (bps == speedp->speed_int)
541 return speedp->speed_val;
542 syslog(LOG_WARNING, "speed %d not supported", bps);
547 * Translate from a speed_t to bits/second.
553 struct speed *speedp;
557 for (speedp = speeds; speedp->speed_int; speedp++)
558 if (speed == speedp->speed_val)
559 return speedp->speed_int;
564 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
565 * at the requested speed, etc. If `local' is true, set CLOCAL
566 * regardless of whether the modem option was specified.
569 set_up_tty(fd, local)
575 if (tcgetattr(fd, &tios) < 0) {
576 syslog(LOG_ERR, "tcgetattr: %m");
582 ioctl(fd, TIOCGWINSZ, &wsinfo);
585 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
587 tios.c_cflag |= CRTSCTS;
588 else if (crtscts < 0)
589 tios.c_cflag &= ~CRTSCTS;
591 tios.c_cflag |= CS8 | CREAD | HUPCL;
593 tios.c_cflag |= CLOCAL;
594 tios.c_iflag = IGNBRK | IGNPAR;
598 tios.c_cc[VTIME] = 0;
601 tios.c_iflag |= IXON | IXOFF;
602 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
603 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
606 speed = translate_speed(inspeed);
608 cfsetospeed(&tios, speed);
609 cfsetispeed(&tios, speed);
611 speed = cfgetospeed(&tios);
613 * We can't proceed if the serial port speed is B0,
614 * since that implies that the serial port is disabled.
617 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
623 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
624 syslog(LOG_ERR, "tcsetattr: %m");
628 baud_rate = inspeed = baud_rate_of(speed);
633 * restore_tty - restore the terminal to the saved settings.
639 if (!default_device) {
641 * Turn off echoing, because otherwise we can get into
642 * a loop with the tty and the modem echoing to each other.
643 * We presume we are the sole user of this tty device, so
644 * when we close it, it will revert to its defaults anyway.
646 inittermios.c_lflag &= ~(ECHO | ECHONL);
648 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
650 syslog(LOG_WARNING, "tcsetattr: %m");
651 ioctl(fd, TIOCSWINSZ, &wsinfo);
657 * setdtr - control the DTR line on the serial port.
658 * This is called from die(), so it shouldn't call die().
664 int modembits = TIOCM_DTR;
666 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
671 * output - Output PPP packet.
684 log_packet(p, len, "sent ");
687 str.buf = (caddr_t) p;
689 while (putmsg(fd, NULL, &str, 0) < 0) {
690 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
692 syslog(LOG_ERR, "Couldn't send packet: %m");
696 pfd.events = POLLOUT;
697 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
702 * wait_input - wait for input, for a length of time specified in *timo.
706 struct timeval *timo;
711 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
713 pfd.events = POLLIN | POLLPRI | POLLHUP;
714 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
715 syslog(LOG_ERR, "poll: %m");
721 * read_packet - get a PPP packet from the serial device.
727 struct strbuf str, ctl;
729 unsigned char ctlbuf[16];
731 str.maxlen = PPP_MTU + PPP_HDRLEN;
732 str.buf = (caddr_t) buf;
733 ctl.maxlen = sizeof(ctlbuf);
734 ctl.buf = (caddr_t) ctlbuf;
736 len = getmsg(fd, &ctl, &str, &i);
738 if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) {
741 syslog(LOG_ERR, "getmsg(fd) %m");
745 MAINDEBUG((LOG_DEBUG, "getmsg returned 0x%x",len));
747 syslog(LOG_NOTICE, "got ctrl msg len %d %x %x\n", ctl.len,
748 ctlbuf[0], ctlbuf[1]);
751 MAINDEBUG((LOG_DEBUG, "getmsg short return length %d", str.len));
760 * ppp_send_config - configure the transmit characteristics of
764 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
772 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
774 if (ioctl(sockfd, (int)SIOCSIPMTU, (caddr_t) &ifr) < 0) {
775 syslog(LOG_ERR, "ioctl(SIOCSIPMTU): %m");
779 if(ioctl(fd, (int)SIOCSIFASYNCMAP, (caddr_t) &asyncmap) < 0) {
780 syslog(LOG_ERR, "ioctl(SIOCSIFASYNCMAP): %m");
785 if(ioctl(fd, (int)SIOCSIFCOMPPROT, &c) < 0) {
786 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPPROT): %m");
791 if(ioctl(fd, (int)SIOCSIFCOMPAC, &c) < 0) {
792 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPAC): %m");
799 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
802 ppp_set_xaccm(unit, accm)
806 if (ioctl(fd, (int)SIOCSIFXASYNCMAP, accm) < 0 && errno != ENOTTY)
807 syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
812 * ppp_recv_config - configure the receive-side characteristics of
816 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
823 if (ioctl(fd, (int)SIOCSIFMRU, &mru) < 0) {
824 syslog(LOG_ERR, "ioctl(SIOCSIFMRU): %m");
827 if (ioctl(fd, (int)SIOCSIFRASYNCMAP, (caddr_t) &asyncmap) < 0) {
828 syslog(LOG_ERR, "ioctl(SIOCSIFRASYNCMAP): %m");
831 c = 2 + (pcomp? 1: 0);
832 if(ioctl(fd, (int)SIOCSIFCOMPPROT, &c) < 0) {
833 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPPROT): %m");
836 c = 2 + (accomp? 1: 0);
837 if (ioctl(fd, (int)SIOCSIFCOMPAC, &c) < 0) {
838 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPAC): %m");
843 * ccp_test - ask kernel whether a given compression method
844 * is acceptable for use.
847 ccp_test(unit, opt_ptr, opt_len, for_transmit)
848 int unit, opt_len, for_transmit;
851 struct ppp_option_data data;
853 if ((unsigned) opt_len > MAX_PPP_OPTION)
854 opt_len = MAX_PPP_OPTION;
855 data.length = opt_len;
856 data.transmit = for_transmit;
857 BCOPY(opt_ptr, data.opt_data, opt_len);
858 if (ioctl(fd, (int)SIOCSCOMPRESS, (caddr_t) &data) >= 0)
860 return (errno == ENOSR)? 0: -1;
864 * ccp_flags_set - inform kernel about the current state of CCP.
867 ccp_flags_set(unit, isopen, isup)
868 int unit, isopen, isup;
872 x = (isopen? 1: 0) + (isup? 2: 0);
873 if (ioctl(fd, (int)SIOCSIFCOMP, (caddr_t) &x) < 0 && errno != ENOTTY)
874 syslog(LOG_ERR, "ioctl (SIOCSIFCOMP): %m");
878 * ccp_fatal_error - returns 1 if decompression was disabled as a
879 * result of an error detected after decompression of a packet,
880 * 0 otherwise. This is necessary because of patent nonsense.
883 ccp_fatal_error(unit)
888 if (ioctl(fd, (int)SIOCGIFCOMP, (caddr_t) &x) < 0) {
889 syslog(LOG_ERR, "ioctl(SIOCGIFCOMP): %m");
892 return x & CCP_FATALERROR;
896 * sifvjcomp - config tcp header compression
899 sifvjcomp(u, vjcomp, cidcomp, maxcid)
900 int u, vjcomp, cidcomp, maxcid;
904 x = (vjcomp? 1: 0) + (cidcomp? 0: 2) + (maxcid << 4);
905 if (ioctl(fd, (int)SIOCSIFVJCOMP, (caddr_t) &x) < 0) {
906 syslog(LOG_ERR, "ioctl(SIOCSIFVJCOMP): %m");
913 * sifup - Config the interface up and enable IP packets to pass.
922 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
923 if (ioctl(sockfd, (int)SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
924 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
927 ifr.ifr_flags |= IFF_UP;
928 if (ioctl(sockfd, (int)SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
929 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
933 npi.protocol = PPP_IP;
934 npi.mode = NPMODE_PASS;
935 if (ioctl(fd, (int)SIOCSETNPMODE, &npi) < 0) {
936 if (errno != ENOTTY) {
937 syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m");
945 * sifdown - Config the interface down.
956 npi.protocol = PPP_IP;
957 npi.mode = NPMODE_ERROR;
958 if (ioctl(fd, (int)SIOCSETNPMODE, (caddr_t) &npi) < 0) {
959 if (errno != ENOTTY) {
960 syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m");
965 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
966 if (ioctl(sockfd, (int)SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
967 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
970 ifr.ifr_flags &= ~IFF_UP;
971 if (ioctl(sockfd, (int)SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
972 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
981 * SET_SA_FAMILY - initialize a struct sockaddr, setting the sa_family field.
983 #define SET_SA_FAMILY(addr, family) \
984 BZERO((char *) &(addr), sizeof(addr)); \
985 addr.sa_family = (family);
988 * sifaddr - Config the interface IP addresses and netmask.
999 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
1000 SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
1001 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
1002 if (ioctl(sockfd, (int)SIOCSIFADDR, (caddr_t) &ifr) < 0) {
1003 syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
1006 ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
1007 if (ioctl(sockfd, (int)SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
1008 syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
1012 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
1013 syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
1014 if (ioctl(sockfd, (int)SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
1015 syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
1020 /* Reset if address --- This is stupid, but seems to be necessary... */
1022 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
1023 if (ioctl(sockfd, (int)SIOCSIFADDR, (caddr_t) &ifr) < 0) {
1024 syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
1032 * cifaddr - Clear the interface IP addresses, and delete routes
1033 * through the interface if possible.
1042 SET_SA_FAMILY(rt.rt_dst, AF_INET);
1043 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
1044 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
1045 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
1046 rt.rt_flags = RTF_HOST;
1047 if (ioctl(sockfd, (int)SIOCDELRT, (caddr_t) &rt) < 0) {
1048 syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
1055 * sifdefaultroute - assign a default route through the address given.
1058 sifdefaultroute(u, g)
1064 SET_SA_FAMILY(rt.rt_dst, AF_INET);
1065 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
1066 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
1067 rt.rt_flags = RTF_GATEWAY;
1068 if (ioctl(sockfd, (int)SIOCADDRT, &rt) < 0) {
1069 syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
1072 default_route_gateway = g;
1077 * cifdefaultroute - delete a default route through the address given.
1080 cifdefaultroute(u, g)
1086 SET_SA_FAMILY(rt.rt_dst, AF_INET);
1087 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
1088 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
1089 rt.rt_flags = RTF_GATEWAY;
1090 if (ioctl(sockfd, (int)SIOCDELRT, &rt) < 0) {
1091 syslog(LOG_ERR, "default route ioctl(SIOCDELRT): %m");
1094 default_route_gateway = 0;
1099 * sifproxyarp - Make a proxy ARP entry for the peer.
1102 sifproxyarp(unit, hisaddr)
1106 struct arpreq arpreq;
1108 BZERO(&arpreq, sizeof(arpreq));
1111 * Get the hardware address of an interface on the same subnet
1112 * as our local address.
1114 if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
1115 syslog(LOG_WARNING, "Cannot determine ethernet address for proxy ARP");
1119 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
1120 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
1121 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1122 if (ioctl(sockfd, (int)SIOCSARP, (caddr_t)&arpreq) < 0) {
1123 syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
1127 proxy_arp_addr = hisaddr;
1132 * cifproxyarp - Delete the proxy ARP entry for the peer.
1135 cifproxyarp(unit, hisaddr)
1139 struct arpreq arpreq;
1141 BZERO(&arpreq, sizeof(arpreq));
1142 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
1143 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
1144 if (ioctl(sockfd, (int)SIOCDARP, (caddr_t)&arpreq) < 0) {
1145 syslog(LOG_ERR, "ioctl(SIOCDARP): %m");
1153 * get_ether_addr - get the hardware address of an interface on the
1154 * the same subnet as ipaddr.
1161 get_ether_addr(ipaddr, hwaddr)
1163 struct sockaddr *hwaddr;
1165 struct ifreq *ifr, *ifend, *ifp;
1167 struct sockaddr_dl *dla;
1170 struct ifreq ifs[MAX_IFS];
1171 struct ifdevea ifdevreq;
1173 ifc.ifc_len = sizeof(ifs);
1175 if (ioctl(sockfd, (int)SIOCGIFCONF, &ifc) < 0) {
1176 perror("ioctl(SIOCGIFCONF)");
1181 * Scan through looking for an interface with an Internet
1182 * address on the same subnet as `ipaddr'.
1184 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1185 for (ifr = ifc.ifc_req; ifr < ifend; ) {
1186 if (ifr->ifr_addr.sa_family == AF_INET) {
1187 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1188 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1190 * Check that the interface is up, and not point-to-point
1193 if (ioctl(sockfd, (int)SIOCGIFFLAGS, &ifreq) < 0)
1195 if ((ifreq.ifr_flags &
1196 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1197 != (IFF_UP|IFF_BROADCAST))
1200 * Get its netmask and check that it's on the right subnet.
1202 if (ioctl(sockfd, (int)SIOCGIFNETMASK, &ifreq) < 0)
1204 mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
1205 if ((ipaddr & mask) != (ina & mask))
1215 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1217 strncpy(ifdevreq.ifr_name, ifr->ifr_name, sizeof(ifdevreq.ifr_name));
1219 if (ioctl(sockfd, (int)SIOCRPHYSADDR, &ifdevreq) < 0) {
1220 perror("ioctl(SIOCRPHYSADDR)");
1224 hwaddr->sa_family = AF_UNSPEC;
1225 memcpy(hwaddr->sa_data, ifdevreq.current_pa, sizeof(ifdevreq.current_pa));
1231 * Return user specified netmask, modified by any mask we might determine
1232 * for address `addr' (in network byte order).
1233 * Here we scan through the system's list of interfaces, looking for
1234 * any non-point-to-point interfaces which might appear to be on the same
1235 * network as `addr'. If we find any, we OR in their netmask to the
1236 * user-specified netmask.
1242 u_int32_t mask, nmask, ina;
1243 struct ifreq *ifr, *ifend, ifreq;
1245 struct ifreq ifs[MAX_IFS];
1248 if (IN_CLASSA(addr)) /* determine network mask for address class */
1249 nmask = IN_CLASSA_NET;
1250 else if (IN_CLASSB(addr))
1251 nmask = IN_CLASSB_NET;
1253 nmask = IN_CLASSC_NET;
1254 /* class D nets are disallowed by bad_ip_adrs */
1255 mask = netmask | htonl(nmask);
1258 * Scan through the system's network interfaces.
1260 ifc.ifc_len = sizeof(ifs);
1262 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1263 syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m");
1266 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1267 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1269 * Check the interface's internet address.
1271 if (ifr->ifr_addr.sa_family != AF_INET)
1273 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1274 if ((ntohl(ina) & nmask) != (addr & nmask))
1277 * Check that the interface is up, and not point-to-point or loopback.
1279 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1280 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1282 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1286 * Get its netmask and OR it into our mask.
1288 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1290 mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
1297 #define WTMPFILE "/usr/adm/wtmp"
1298 #include <sys/stat.h>
1301 logwtmp(line, name, host)
1302 char *line, *name, *host;
1308 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1310 if (!fstat(fd, &buf)) {
1311 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1312 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1313 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1314 (void)time(&ut.ut_time);
1315 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1316 (void)ftruncate(fd, buf.st_size);
1322 * Code for locking/unlocking the serial device.
1323 * This code is derived from chat.c.
1329 # define LOCK_PREFIX "/usr/spool/locks/LCK.."
1331 # define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1333 #endif /* LOCK_DIR */
1335 static char *lock_file;
1338 * lock - create a lock file for the named device
1344 char hdb_lock_buffer[12];
1348 if ((p = strrchr(dev, '/')) != NULL)
1350 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1351 if (lock_file == NULL)
1352 novm("lock file name");
1353 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1355 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1357 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1358 /* Read the lock file to find out who has the device locked */
1360 n = read(fd, hdb_lock_buffer, 11);
1362 hdb_lock_buffer[n] = 0;
1363 pid = atoi(hdb_lock_buffer);
1366 n = read(fd, &pid, sizeof(pid));
1369 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1372 if (kill(pid, 0) == -1 && errno == ESRCH) {
1373 /* pid no longer exists - remove the lock file */
1374 if (unlink(lock_file) == 0) {
1376 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1380 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1383 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1388 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1395 sprintf(hdb_lock_buffer, "%10d\n", getpid());
1396 write(fd, hdb_lock_buffer, 11);
1399 write(fd, &pid, sizeof pid);
1407 * unlock - remove our lockfile