2 * sys-ultrix.c - System-dependent procedures for setting up
3 * PPP interfaces on Ultrix systems.
5 * Copyright (c) 1989 Carnegie Mellon University.
6 * Copyright (c) 1995 The Australian National University.
9 * Redistribution and use in source and binary forms are permitted
10 * provided that the above copyright notice and this paragraph are
11 * duplicated in all such forms and that any documentation,
12 * advertising materials, and other materials related to such
13 * distribution and use acknowledge that the software was developed
14 * by Carnegie Mellon University and The Australian National University.
15 * The names of the Universities may not be used to endorse or promote
16 * products derived from this software without specific prior written
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
20 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
24 static char rcsid[] = "$Id: sys-ultrix.c,v 1.17 1996/05/26 23:58:03 paulus Exp $";
40 #include <sys/types.h>
42 #include <sys/socket.h>
43 #include <sys/ioctl.h>
45 #include <sys/errno.h>
49 #include <net/ppp_defs.h>
50 #include <net/if_ppp.h>
51 #include <net/route.h>
52 #include <netinet/in.h>
56 static int initdisc = -1; /* Initial TTY discipline for ppp_fd */
57 static int initfdflags = -1; /* Initial file descriptor flags for ppp_fd */
58 static int ppp_fd = -1; /* fd which is set to PPP discipline */
60 static int restore_term; /* 1 => we've munged the terminal */
61 static struct termios inittermios; /* Initial TTY termios */
62 static struct winsize wsinfo; /* Initial window size info */
64 static char *lock_file; /* name of lock file created */
66 static int loop_slave = -1;
67 static int loop_master;
68 static char loop_name[20];
70 static unsigned char inbuf[512]; /* buffer for chars read from loopback */
72 static int sockfd; /* socket for doing interface ioctls */
74 static int if_is_up; /* the interface is currently up */
75 static u_int32_t ifaddrs[2]; /* local and remote addresses */
76 static u_int32_t default_route_gateway; /* gateway addr for default route */
77 static u_int32_t proxy_arp_addr; /* remote addr for proxy arp */
79 /* Prototypes for procedures local to this file. */
80 static int translate_speed __P((int));
81 static int baud_rate_of __P((int));
82 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
86 * sys_init - System-dependent initialization.
91 /* Get an internet socket for doing socket ioctl's on. */
92 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
93 syslog(LOG_ERR, "Couldn't create IP socket: %m");
99 * sys_cleanup - restore any system state we modified before exiting:
100 * mark the interface down, delete default route and/or proxy arp entry.
101 * This should call die() because it's called from die().
109 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
110 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0
111 && ((ifr.ifr_flags & IFF_UP) != 0)) {
112 ifr.ifr_flags &= ~IFF_UP;
113 ioctl(sockfd, SIOCSIFFLAGS, &ifr);
117 cifaddr(0, ifaddrs[0], ifaddrs[1]);
118 if (default_route_gateway)
119 cifdefaultroute(0, default_route_gateway);
121 cifproxyarp(0, proxy_arp_addr);
125 * sys_close - Clean up in a child process before execing.
131 if (loop_slave >= 0) {
138 * sys_check_options - check the options that the user specified
145 "Sorry - demand-dialling is not supported under Ultrix\n");
152 * daemon - Detach us from the terminal session.
155 daemon(nochdir, noclose)
156 int nochdir, noclose;
160 if ((pid = fork()) < 0)
163 exit(0); /* parent dies */
168 fclose(stdin); /* don't need stdin, stdout, stderr */
176 * ppp_available - check whether the system has any ppp interfaces
177 * (in fact we check whether we can do an ioctl on ppp0).
184 extern char *no_ppp_msg;
186 if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
187 return 1; /* can't tell */
189 strncpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name));
190 ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0;
194 This system lacks kernel support for PPP. To include PPP support\n\
195 in the kernel, please follow the steps detailed in the README.ultrix\n\
196 file in the ppp-2.2 distribution.\n";
201 * establish_ppp - Turn the serial port into a ppp interface.
207 int pppdisc = PPPDISC;
211 * Save the old line discipline of fd, and set it to PPP.
213 if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
214 syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
217 if (ioctl(fd, TIOCSETD, &pppdisc) < 0) {
218 syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
223 * Find out which interface we were given.
225 if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {
226 syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
233 * Enable debug in the driver if requested.
236 if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
237 syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m");
239 x |= (kdebugflag & 0xFF) * SC_DEBUG;
240 if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
241 syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
246 * Set device for non-blocking reads.
248 if ((initfdflags = fcntl(fd, F_GETFL)) == -1
249 || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
250 syslog(LOG_WARNING, "Couldn't set device to non-blocking mode: %m");
255 * restore_loop - reattach the ppp unit to the loopback.
263 * disestablish_ppp - Restore the serial port to normal operation.
264 * This shouldn't call die() because it's called from die().
270 /* Reset non-blocking mode on fd. */
271 if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
272 syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
275 /* Restore old line discipline. */
276 if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0)
277 syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
285 * Check whether the link seems not to be 8-bit clean.
293 if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) {
295 switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
297 s = "bit 7 set to 1";
300 s = "bit 7 set to 0";
310 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
311 syslog(LOG_WARNING, "All received characters had %s", s);
318 * List of valid speeds.
321 int speed_int, speed_val;
393 * Translate from bits/second to a speed_t.
399 struct speed *speedp;
403 for (speedp = speeds; speedp->speed_int; speedp++)
404 if (bps == speedp->speed_int)
405 return speedp->speed_val;
406 syslog(LOG_WARNING, "speed %d not supported", bps);
411 * Translate from a speed_t to bits/second.
417 struct speed *speedp;
421 for (speedp = speeds; speedp->speed_int; speedp++)
422 if (speed == speedp->speed_val)
423 return speedp->speed_int;
428 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
429 * at the requested speed, etc. If `local' is true, set CLOCAL
430 * regardless of whether the modem option was specified.
433 set_up_tty(fd, local)
439 if (tcgetattr(fd, &tios) < 0) {
440 syslog(LOG_ERR, "tcgetattr: %m");
446 ioctl(fd, TIOCGWINSZ, &wsinfo);
449 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
451 if (crtscts > 0 && !local)
452 tios.c_cflag |= CRTSCTS;
453 else if (crtscts < 0)
454 tios.c_cflag &= ~CRTSCTS;
457 tios.c_cflag |= CS8 | CREAD | HUPCL;
459 tios.c_cflag |= CLOCAL;
460 tios.c_iflag = IGNBRK | IGNPAR;
464 tios.c_cc[VTIME] = 0;
467 tios.c_iflag |= IXON | IXOFF;
468 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
469 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
472 speed = translate_speed(inspeed);
474 cfsetospeed(&tios, speed);
475 cfsetispeed(&tios, speed);
477 speed = cfgetospeed(&tios);
479 * We can't proceed if the serial port speed is B0,
480 * since that implies that the serial port is disabled.
483 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
489 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
490 syslog(LOG_ERR, "tcsetattr: %m");
495 if (ioctl(fd, (crtscts > 0 || modem)? TIOCMODEM: TIOCNMODEM, &x) < 0)
496 syslog(LOG_WARNING, "TIOC(N)MODEM: %m");
497 if (ioctl(fd, (local || !modem)? TIOCNCAR: TIOCCAR) < 0)
498 syslog(LOG_WARNING, "TIOC(N)CAR: %m");
500 baud_rate = inspeed = baud_rate_of(speed);
505 * restore_tty - restore the terminal to the saved settings.
512 if (!default_device) {
514 * Turn off echoing, because otherwise we can get into
515 * a loop with the tty and the modem echoing to each other.
516 * We presume we are the sole user of this tty device, so
517 * when we close it, it will revert to its defaults anyway.
519 inittermios.c_lflag &= ~(ECHO | ECHONL);
521 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
523 syslog(LOG_WARNING, "tcsetattr: %m");
524 ioctl(fd, TIOCSWINSZ, &wsinfo);
525 restore_term = FALSE;
530 * setdtr - control the DTR line on the serial port.
531 * This is called from die(), so it shouldn't call die().
537 int modembits = TIOCM_DTR;
539 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
544 * open_ppp_loopback - open the device we use for getting
545 * packets in demand mode, and connect it to a ppp interface.
546 * Here we use would use a pty, except that Ultrix ptys are brain-dead.
551 syslog(LOG_ERR, "open_ppp_loopback called!");
557 * output - Output PPP packet.
566 log_packet(p, len, "sent ");
568 if (write(ttyfd, p, len) < 0) {
570 syslog(LOG_ERR, "write: %m");
576 * wait_input - wait until there is data available on ttyfd,
577 * for the length of time specified by *timo (indefinite
582 struct timeval *timo;
588 FD_SET(ttyfd, &ready);
589 n = select(ttyfd+1, &ready, NULL, &ready, timo);
590 if (n < 0 && errno != EINTR) {
591 syslog(LOG_ERR, "select: %m");
598 * wait_loop_output - wait until there is data available on the
599 * loopback, for the length of time specified by *timo (indefinite
602 wait_loop_output(timo)
603 struct timeval *timo;
610 * wait_time - wait for a given length of time or until a
611 * signal is received.
614 struct timeval *timo;
618 n = select(0, NULL, NULL, NULL, timo);
619 if (n < 0 && errno != EINTR) {
620 syslog(LOG_ERR, "select: %m");
627 * read_packet - get a PPP packet from the serial device.
635 if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
636 if (errno == EWOULDBLOCK || errno == EINTR)
638 syslog(LOG_ERR, "read(fd): %m");
646 * get_loop_output - read characters from the loopback, form them
647 * into frames, and detect when we want to bring the real link up.
648 * Return value is 1 if we need to bring up the link, 0 otherwise.
658 * ppp_send_config - configure the transmit characteristics of
662 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
669 if (ioctl(ppp_fd, PPPIOCSMTU, &mtu) < 0) {
670 syslog(LOG_ERR, "ioctl(PPPIOCSMTU): %m");
674 if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
675 syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
679 if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
680 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
683 x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
684 x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
685 if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
686 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
693 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
696 ppp_set_xaccm(unit, accm)
700 if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
701 syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
706 * ppp_recv_config - configure the receive-side characteristics of
710 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
717 if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
718 syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
721 if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
722 syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
725 if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
726 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
729 x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
730 if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
731 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
737 * ccp_test - ask kernel whether a given compression method
738 * is acceptable for use. Returns 1 if the method and parameters
739 * are OK, 0 if the method is known but the parameters are not OK
740 * (e.g. code size should be reduced), or -1 if the method is unknown.
743 ccp_test(unit, opt_ptr, opt_len, for_transmit)
744 int unit, opt_len, for_transmit;
747 struct ppp_option_data data;
750 data.length = opt_len;
751 data.transmit = for_transmit;
752 if (ioctl(ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
754 return (errno == ENOBUFS)? 0: -1;
758 * ccp_flags_set - inform kernel about the current state of CCP.
761 ccp_flags_set(unit, isopen, isup)
762 int unit, isopen, isup;
766 if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
767 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
770 x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
771 x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
772 if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
773 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
777 * ccp_fatal_error - returns 1 if decompression was disabled as a
778 * result of an error detected after decompression of a packet,
779 * 0 otherwise. This is necessary because of patent nonsense.
782 ccp_fatal_error(unit)
787 if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
788 syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
791 return x & SC_DC_FERROR;
795 * get_idle_time - return how long the link has been idle.
802 return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
807 * set_filters - transfer the pass and active filters to the kernel.
810 set_filters(pass, active)
811 struct bpf_program *pass, *active;
815 if (pass->bf_len > 0) {
816 if (ioctl(ppp_fd, PPPIOCSPASS, pass) < 0) {
817 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
821 if (active->bf_len > 0) {
822 if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) {
823 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
832 * sifvjcomp - config tcp header compression
835 sifvjcomp(u, vjcomp, cidcomp, maxcid)
836 int u, vjcomp, cidcomp, maxcid;
840 if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
841 syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
844 x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
845 x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
846 if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
847 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
850 if (ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
851 syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
858 * sifup - Config the interface up and enable IP packets to pass.
866 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
867 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
868 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
871 ifr.ifr_flags |= IFF_UP;
872 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
873 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
881 * sifnpmode - Set the mode for handling packets for a given NP.
884 sifnpmode(u, proto, mode)
891 npi.protocol = proto;
893 if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
894 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
901 * sifdown - Config the interface down and disable IP.
912 npi.protocol = PPP_IP;
913 npi.mode = NPMODE_ERROR;
914 ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi);
915 /* ignore errors, because ppp_fd might have been closed by now. */
917 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
918 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
919 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
922 ifr.ifr_flags &= ~IFF_UP;
923 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
924 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
933 * SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
936 #define SET_SA_FAMILY(addr, family) \
937 BZERO((char *) &(addr), sizeof(addr)); \
938 addr.sa_family = (family);
941 * sifaddr - Config the interface IP addresses and netmask.
952 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
953 SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
955 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
956 syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
957 if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
958 syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
962 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
963 if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
964 syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
967 ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
968 if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
969 syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
978 * cifaddr - Clear the interface IP addresses, and delete routes
979 * through the interface if possible.
989 BZERO(&rt, sizeof(rt));
990 SET_SA_FAMILY(rt.rt_dst, AF_INET);
991 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
992 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
993 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
994 rt.rt_flags = RTF_HOST;
995 if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
996 syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
1003 * sifdefaultroute - assign a default route through the address given.
1006 sifdefaultroute(u, g)
1010 BZERO(&rt, sizeof(rt));
1011 SET_SA_FAMILY(rt.rt_dst, AF_INET);
1012 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
1013 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
1014 rt.rt_flags = RTF_GATEWAY;
1015 if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
1016 syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
1019 default_route_gateway = g;
1024 * cifdefaultroute - delete a default route through the address given.
1027 cifdefaultroute(u, g)
1031 BZERO(&rt, sizeof(rt));
1032 SET_SA_FAMILY(rt.rt_dst, AF_INET);
1033 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
1034 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
1035 rt.rt_flags = RTF_GATEWAY;
1036 if (ioctl(sockfd, SIOCDELRT, &rt) < 0)
1037 syslog(LOG_WARNING, "default route ioctl(SIOCDELRT): %m");
1038 default_route_gateway = 0;
1043 * sifproxyarp - Make a proxy ARP entry for the peer.
1046 sifproxyarp(unit, hisaddr)
1050 struct arpreq arpreq;
1052 BZERO(&arpreq, sizeof(arpreq));
1055 * Get the hardware address of an interface on the same subnet
1056 * as our local address.
1058 if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
1059 syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
1063 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
1064 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
1065 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1066 if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
1067 syslog(LOG_ERR, "Couldn't add proxy arp entry: %m");
1071 proxy_arp_addr = hisaddr;
1076 * cifproxyarp - Delete the proxy ARP entry for the peer.
1079 cifproxyarp(unit, hisaddr)
1083 struct arpreq arpreq;
1085 BZERO(&arpreq, sizeof(arpreq));
1086 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
1087 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
1088 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1089 syslog(LOG_WARNING, "Couldn't delete proxy arp entry: %m");
1097 * get_ether_addr - get the hardware address of an interface on the
1098 * the same subnet as ipaddr.
1103 get_ether_addr(ipaddr, hwaddr)
1105 struct sockaddr *hwaddr;
1107 struct ifreq *ifr, *ifend;
1108 u_int32_t ina, mask;
1111 struct ifreq ifs[MAX_IFS];
1112 struct ifdevea ifdevea;
1114 ifc.ifc_len = sizeof(ifs);
1116 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1117 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1122 * Scan through looking for an interface with an Internet
1123 * address on the same subnet as `ipaddr'.
1125 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1126 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1127 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1128 if (ifr->ifr_addr.sa_family == AF_INET) {
1129 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1130 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1132 * Check that the interface is up, and not point-to-point
1135 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1137 if ((ifreq.ifr_flags &
1138 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1139 != (IFF_UP|IFF_BROADCAST))
1142 * Get its netmask and check that it's on the right subnet.
1144 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1146 mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
1147 if ((ipaddr & mask) != (ina & mask))
1156 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1159 * Grab the physical address for this interface.
1161 strncpy(ifdevea.ifr_name, ifr->ifr_name, sizeof(ifdevea.ifr_name));
1162 if (ioctl(sockfd, SIOCRPHYSADDR, &ifdevea) < 0) {
1163 syslog(LOG_ERR, "Couldn't get h/w address for %s: %m", ifr->ifr_name);
1167 hwaddr->sa_family = AF_UNSPEC;
1168 BCOPY(ifdevea.current_pa, hwaddr->sa_data, 6);
1173 * Return user specified netmask, modified by any mask we might determine
1174 * for address `addr' (in network byte order).
1175 * Here we scan through the system's list of interfaces, looking for
1176 * any non-point-to-point interfaces which might appear to be on the same
1177 * network as `addr'. If we find any, we OR in their netmask to the
1178 * user-specified netmask.
1184 u_int32_t mask, nmask, ina;
1185 struct ifreq *ifr, *ifend, ifreq;
1187 struct ifreq ifs[MAX_IFS];
1190 if (IN_CLASSA(addr)) /* determine network mask for address class */
1191 nmask = IN_CLASSA_NET;
1192 else if (IN_CLASSB(addr))
1193 nmask = IN_CLASSB_NET;
1195 nmask = IN_CLASSC_NET;
1196 /* class D nets are disallowed by bad_ip_adrs */
1197 mask = netmask | htonl(nmask);
1200 * Scan through the system's network interfaces.
1202 ifc.ifc_len = sizeof(ifs);
1204 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1205 syslog(LOG_WARNING, "ioctl(SIOCGIFCONF): %m");
1208 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1209 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1210 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1212 * Check the interface's internet address.
1214 if (ifr->ifr_addr.sa_family != AF_INET)
1216 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1217 if ((ntohl(ina) & nmask) != (addr & nmask))
1220 * Check that the interface is up, and not point-to-point or loopback.
1222 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1223 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1225 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1229 * Get its netmask and OR it into our mask.
1231 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1233 mask |= ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
1241 Seems like strdup() is not part of string package in Ultrix.
1242 If I understood the man-page on the sun this should work.
1247 char *strdup( in ) char *in;
1250 if(! (dup = (char *) malloc( strlen( in ) +1 ))) return NULL;
1251 (void) strcpy( dup, in );
1256 * This logwtmp() implementation is subject to the following copyright:
1258 * Copyright (c) 1988 The Regents of the University of California.
1259 * All rights reserved.
1261 * Redistribution and use in source and binary forms are permitted
1262 * provided that the above copyright notice and this paragraph are
1263 * duplicated in all such forms and that any documentation,
1264 * advertising materials, and other materials related to such
1265 * distribution and use acknowledge that the software was developed
1266 * by the University of California, Berkeley. The name of the
1267 * University may not be used to endorse or promote products derived
1268 * from this software without specific prior written permission.
1269 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
1270 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
1271 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
1274 #define WTMPFILE "/usr/adm/wtmp"
1277 logwtmp(line, name, host)
1278 char *line, *name, *host;
1284 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1286 if (!fstat(fd, &buf)) {
1287 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1288 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1289 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1290 (void)time(&ut.ut_time);
1291 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1292 (void)ftruncate(fd, buf.st_size);
1298 * Routines for locking and unlocking the serial device, moved here
1302 #define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1305 * lock - create a lock file for the named device
1314 if ((p = strrchr(dev, '/')) != NULL)
1316 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1317 if (lock_file == NULL)
1318 novm("lock file name");
1319 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1321 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1323 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1324 /* Read the lock file to find out who has the device locked */
1325 n = read(fd, &pid, sizeof(pid));
1327 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1330 if (kill(pid, 0) == -1 && errno == ESRCH) {
1331 /* pid no longer exists - remove the lock file */
1332 if (unlink(lock_file) == 0) {
1334 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1338 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1341 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1346 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1353 write(fd, &pid, sizeof pid);
1360 * unlock - remove our lockfile