2 * System-dependent procedures for pppd under SunOS 4.
4 * Copyright (c) 1994 The Australian National University.
7 * Permission to use, copy, modify, and distribute this software and its
8 * documentation is hereby granted, provided that the above copyright
9 * notice appears in all copies. This software is provided without any
10 * warranty, express or implied. The Australian National University
11 * makes no representations about the suitability of this software for
14 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
15 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
16 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
17 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
20 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
21 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
22 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
23 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
24 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
29 static char rcsid[] = "$Id: sys-sunos4.c,v 1.3 1996/01/01 23:06:37 paulus Exp $";
44 #include <sys/types.h>
45 #include <sys/param.h>
46 #include <sys/socket.h>
47 #include <sys/sockio.h>
48 #include <sys/stream.h>
49 #include <sys/stropts.h>
50 #include <sys/syslog.h>
55 #include <net/if_arp.h>
56 #include <net/nit_if.h>
57 #include <net/route.h>
58 #include <net/ppp_defs.h>
59 #include <net/pppio.h>
60 #include <netinet/in.h>
64 #if defined(sun) && defined(sparc)
69 static int fdmuxid = -1;
73 static int restore_term;
74 static struct termios inittermios;
75 static struct winsize wsinfo; /* Initial window size info */
76 static pid_t parent_pid; /* PID of our parent */
78 extern u_char inpacket_buf[]; /* borrowed from main.c */
80 static int link_mtu, link_mru;
83 static int tty_nmodules;
84 static char tty_modules[NMODULES][FMNAMESZ+1];
86 static int if_is_up; /* Interface has been marked up */
87 static u_int32_t default_route_gateway; /* Gateway for default route added */
88 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
90 /* Prototypes for procedures local to this file. */
91 static int translate_speed __P((int));
92 static int baud_rate_of __P((int));
93 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
94 static int strioctl __P((int, int, void *, int, int));
98 * sys_init - System-dependent initialization.
105 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
106 setlogmask(LOG_UPTO(LOG_INFO));
108 setlogmask(LOG_UPTO(LOG_DEBUG));
110 /* Get an internet socket for doing socket ioctl's on. */
111 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
112 syslog(LOG_ERR, "Couldn't create IP socket: %m");
117 * We may want to send a SIGHUP to the session leader associated
118 * with our controlling terminal later. Because SunOS doesn't
119 * have getsid(), we make do with sending the signal to our
122 parent_pid = getppid();
125 * Open the ppp device.
127 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
129 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
133 x = PPPDBG_LOG + PPPDBG_DRIVER;
134 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
137 /* Assign a new PPA and get its unit number. */
138 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
139 syslog(LOG_ERR, "Can't create new PPP interface: %m");
144 * Open the ppp device again and push the if_ppp module on it.
146 iffd = open("/dev/ppp", O_RDWR, 0);
148 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
152 x = PPPDBG_LOG + PPPDBG_DRIVER;
153 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
155 if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0) {
156 syslog(LOG_ERR, "Couldn't attach ppp interface to device: %m");
159 if (ioctl(iffd, I_PUSH, "if_ppp") < 0) {
160 syslog(LOG_ERR, "Can't push ppp interface module: %m");
164 x = PPPDBG_LOG + PPPDBG_IF;
165 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
167 if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0) {
168 syslog(LOG_ERR, "Couldn't create ppp interface unit: %m");
172 if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0) {
173 syslog(LOG_ERR, "Couldn't bind ppp interface to IP SAP: %m");
179 * sys_cleanup - restore any system state we modified before exiting:
180 * mark the interface down, delete default route and/or proxy arp entry.
181 * This should call die() because it's called from die().
188 if (default_route_gateway)
189 cifdefaultroute(0, default_route_gateway);
191 cifproxyarp(0, proxy_arp_addr);
195 * sys_close - Clean up in a child process before execing.
207 * sys_check_options - check the options that the user specified
216 * daemon - Detach us from controlling terminal session.
219 daemon(nochdir, noclose)
220 int nochdir, noclose;
224 if ((pid = fork()) < 0)
227 exit(0); /* parent dies */
232 fclose(stdin); /* don't need stdin, stdout, stderr */
240 * note_debug_level - note a change in the debug level.
246 setlogmask(LOG_UPTO(LOG_DEBUG));
248 setlogmask(LOG_UPTO(LOG_WARNING));
253 * ppp_available - check whether the system has any ppp interfaces
260 return stat("/dev/ppp", &buf) >= 0;
264 * establish_ppp - Turn the serial port into a ppp interface.
272 /* Pop any existing modules off the tty stream. */
274 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
275 || ioctl(fd, I_POP, 0) < 0)
279 /* Push the async hdlc module and the compressor module. */
280 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
281 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
284 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
285 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
289 /* Link the serial port under the PPP multiplexor. */
290 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
291 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
297 * restore_loop - reattach the ppp unit to the loopback.
298 * This doesn't need to do anything because disestablish_ppp does it.
306 * disestablish_ppp - Restore the serial port to normal operation.
307 * It attempts to reconstruct the stream with the previously popped
308 * modules. This shouldn't call die() because it's called from die().
317 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
319 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
324 while (ioctl(fd, I_POP, 0) >= 0)
326 for (i = tty_nmodules - 1; i >= 0; --i)
327 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
328 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
331 if (hungup && default_device && parent_pid > 0) {
333 * If we have received a hangup, we need to send a SIGHUP
334 * to the terminal's controlling process. The reason is
335 * that the original stream head for the terminal hasn't
336 * seen the M_HANGUP message (it went up through the ppp
337 * driver to the stream head for our fd to /dev/ppp).
338 * Actually we send the signal to the process that invoked
339 * pppd, since SunOS doesn't have getsid().
341 kill(parent_pid, SIGHUP);
347 * Check whether the link seems not to be 8-bit clean.
355 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
360 s = "bit 7 set to 1";
363 s = "bit 7 set to 0";
373 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
374 syslog(LOG_WARNING, "All received characters had %s", s);
379 * List of valid speeds.
382 int speed_int, speed_val;
454 * Translate from bits/second to a speed_t.
460 struct speed *speedp;
464 for (speedp = speeds; speedp->speed_int; speedp++)
465 if (bps == speedp->speed_int)
466 return speedp->speed_val;
467 syslog(LOG_WARNING, "speed %d not supported", bps);
472 * Translate from a speed_t to bits/second.
478 struct speed *speedp;
482 for (speedp = speeds; speedp->speed_int; speedp++)
483 if (speed == speedp->speed_val)
484 return speedp->speed_int;
489 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
490 * at the requested speed, etc. If `local' is true, set CLOCAL
491 * regardless of whether the modem option was specified.
494 set_up_tty(fd, local)
500 if (tcgetattr(fd, &tios) < 0) {
501 syslog(LOG_ERR, "tcgetattr: %m");
507 ioctl(fd, TIOCGWINSZ, &wsinfo);
510 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
512 tios.c_cflag |= CRTSCTS;
513 else if (crtscts < 0)
514 tios.c_cflag &= ~CRTSCTS;
516 tios.c_cflag |= CS8 | CREAD | HUPCL;
518 tios.c_cflag |= CLOCAL;
519 tios.c_iflag = IGNBRK | IGNPAR;
523 tios.c_cc[VTIME] = 0;
526 tios.c_iflag |= IXON | IXOFF;
527 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
528 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
531 speed = translate_speed(inspeed);
533 cfsetospeed(&tios, speed);
534 cfsetispeed(&tios, speed);
536 speed = cfgetospeed(&tios);
538 * We can't proceed if the serial port speed is 0,
539 * since that implies that the serial port is disabled.
542 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
548 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
549 syslog(LOG_ERR, "tcsetattr: %m");
553 baud_rate = inspeed = baud_rate_of(speed);
558 * restore_tty - restore the terminal to the saved settings.
565 if (!default_device) {
567 * Turn off echoing, because otherwise we can get into
568 * a loop with the tty and the modem echoing to each other.
569 * We presume we are the sole user of this tty device, so
570 * when we close it, it will revert to its defaults anyway.
572 inittermios.c_lflag &= ~(ECHO | ECHONL);
574 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
575 if (!hungup && errno != ENXIO)
576 syslog(LOG_WARNING, "tcsetattr: %m");
577 ioctl(fd, TIOCSWINSZ, &wsinfo);
583 * setdtr - control the DTR line on the serial port.
584 * This is called from die(), so it shouldn't call die().
590 int modembits = TIOCM_DTR;
592 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
596 * open_loopback - open the device we use for getting packets
597 * in demand mode. Under Solaris 2, we use our existing fd
606 * output - Output PPP packet.
619 log_packet(p, len, "sent ");
622 data.buf = (caddr_t) p;
624 while (putmsg(pppfd, NULL, &data, 0) < 0) {
625 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
627 syslog(LOG_ERR, "Couldn't send packet: %m");
631 pfd.events = POLLOUT;
632 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
638 * wait_input - wait until there is data available on fd,
639 * for the length of time specified by *timo (indefinite
644 struct timeval *timo;
649 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
651 pfd.events = POLLIN | POLLPRI | POLLHUP;
652 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
653 syslog(LOG_ERR, "poll: %m");
659 * wait_loop_output - wait until there is data available on the
660 * loopback, for the length of time specified by *timo (indefinite
663 wait_loop_output(timo)
664 struct timeval *timo;
670 * wait_time - wait for a given length of time or until a
671 * signal is received.
674 struct timeval *timo;
678 n = select(0, NULL, NULL, NULL, timo);
679 if (n < 0 && errno != EINTR) {
680 syslog(LOG_ERR, "select: %m");
687 * read_packet - get a PPP packet from the serial device.
693 struct strbuf ctrl, data;
695 unsigned char ctrlbuf[64];
698 data.maxlen = PPP_MRU + PPP_HDRLEN;
699 data.buf = (caddr_t) buf;
700 ctrl.maxlen = sizeof(ctrlbuf);
701 ctrl.buf = (caddr_t) ctrlbuf;
703 len = getmsg(pppfd, &ctrl, &data, &flags);
705 if (errno = EAGAIN || errno == EINTR)
707 syslog(LOG_ERR, "Error reading packet: %m");
715 * Got a M_PROTO or M_PCPROTO message. Huh?
718 syslog(LOG_DEBUG, "got ctrl msg len=%d", ctrl.len);
724 * get_loop_output - get outgoing packets from the ppp device,
725 * and detect when we want to bring the real link up.
726 * Return value is 1 if we need to bring up the link, 0 otherwise.
734 while ((len = read_packet(inpacket_buf)) > 0) {
735 if (loop_frame(inpacket_buf, len))
742 * ppp_send_config - configure the transmit characteristics of
746 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
754 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
755 if (hungup && errno == ENXIO)
757 syslog(LOG_ERR, "Couldn't set MTU: %m");
759 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
760 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
762 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
763 cf[1] = COMP_PROT | COMP_AC;
764 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
765 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
770 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
773 ppp_set_xaccm(unit, accm)
777 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
778 if (!hungup || errno != ENXIO)
779 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
784 * ppp_recv_config - configure the receive-side characteristics of
788 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
796 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
797 if (hungup && errno == ENXIO)
799 syslog(LOG_ERR, "Couldn't set MRU: %m");
801 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
802 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
804 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
805 cf[1] = DECOMP_PROT | DECOMP_AC;
806 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
807 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
812 * ccp_test - ask kernel whether a given compression method
813 * is acceptable for use.
816 ccp_test(unit, opt_ptr, opt_len, for_transmit)
817 int unit, opt_len, for_transmit;
820 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
821 opt_ptr, opt_len, 0) >= 0)
823 return (errno == ENOSR)? 0: -1;
827 * ccp_flags_set - inform kernel about the current state of CCP.
830 ccp_flags_set(unit, isopen, isup)
831 int unit, isopen, isup;
835 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
836 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
837 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
838 if (!hungup || errno != ENXIO)
839 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
844 * get_idle_time - return how long the link has been idle.
851 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
856 * ccp_fatal_error - returns 1 if decompression was disabled as a
857 * result of an error detected after decompression of a packet,
858 * 0 otherwise. This is necessary because of patent nonsense.
861 ccp_fatal_error(unit)
867 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
868 if (errno != ENXIO && errno != EINVAL)
869 syslog(LOG_ERR, "Couldn't get compression flags: %m");
872 return cf[0] & CCP_FATALERROR;
876 * sifvjcomp - config tcp header compression
879 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
880 int u, vjcomp, xcidcomp, xmaxcid;
886 maxcid[0] = xcidcomp;
887 maxcid[1] = 15; /* XXX should be rmaxcid */
888 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
889 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
893 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
894 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
895 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
896 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
898 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
905 * sifup - Config the interface up and enable IP packets to pass.
913 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
914 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
915 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
918 ifr.ifr_flags |= IFF_UP;
919 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
920 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
928 * sifdown - Config the interface down and disable IP.
936 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
937 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
938 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
941 if ((ifr.ifr_flags & IFF_UP) != 0) {
942 ifr.ifr_flags &= ~IFF_UP;
943 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
944 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
953 * sifnpmode - Set the mode for handling packets for a given NP.
956 sifnpmode(u, proto, mode)
965 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
966 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
972 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
975 * sifaddr - Config the interface IP addresses and netmask.
984 memset(&ifr, 0, sizeof(ifr));
985 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
986 ifr.ifr_addr.sa_family = AF_INET;
987 INET_ADDR(ifr.ifr_addr) = o;
988 if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) {
989 syslog(LOG_ERR, "Couldn't set local IP address: %m");
991 ifr.ifr_dstaddr.sa_family = AF_INET;
992 INET_ADDR(ifr.ifr_dstaddr) = h;
993 if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) {
994 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
996 ifr.ifr_addr.sa_family = AF_INET;
997 INET_ADDR(ifr.ifr_addr) = m;
998 if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) {
999 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1001 ifr.ifr_metric = link_mtu;
1002 if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
1003 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1010 * cifaddr - Clear the interface IP addresses, and delete routes
1011 * through the interface if possible.
1020 rt.rt_dst.sa_family = AF_INET;
1021 INET_ADDR(rt.rt_dst) = h;
1022 rt.rt_gateway.sa_family = AF_INET;
1023 INET_ADDR(rt.rt_gateway) = o;
1024 rt.rt_flags = RTF_HOST;
1025 ioctl(sockfd, SIOCDELRT, &rt);
1030 * sifdefaultroute - assign a default route through the address given.
1033 sifdefaultroute(u, g)
1039 rt.rt_dst.sa_family = AF_INET;
1040 INET_ADDR(rt.rt_dst) = 0;
1041 rt.rt_gateway.sa_family = AF_INET;
1042 INET_ADDR(rt.rt_gateway) = g;
1043 rt.rt_flags = RTF_GATEWAY;
1045 if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
1046 syslog(LOG_ERR, "Can't add default route: %m");
1050 default_route_gateway = g;
1055 * cifdefaultroute - delete a default route through the address given.
1058 cifdefaultroute(u, g)
1064 rt.rt_dst.sa_family = AF_INET;
1065 INET_ADDR(rt.rt_dst) = 0;
1066 rt.rt_gateway.sa_family = AF_INET;
1067 INET_ADDR(rt.rt_gateway) = g;
1068 rt.rt_flags = RTF_GATEWAY;
1070 if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
1071 syslog(LOG_ERR, "Can't delete default route: %m");
1075 default_route_gateway = 0;
1080 * sifproxyarp - Make a proxy ARP entry for the peer.
1083 sifproxyarp(unit, hisaddr)
1087 struct arpreq arpreq;
1089 bzero(&arpreq, sizeof(arpreq));
1090 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1093 arpreq.arp_pa.sa_family = AF_INET;
1094 INET_ADDR(arpreq.arp_pa) = hisaddr;
1095 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1096 if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1097 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1101 proxy_arp_addr = hisaddr;
1106 * cifproxyarp - Delete the proxy ARP entry for the peer.
1109 cifproxyarp(unit, hisaddr)
1113 struct arpreq arpreq;
1115 bzero(&arpreq, sizeof(arpreq));
1116 arpreq.arp_pa.sa_family = AF_INET;
1117 INET_ADDR(arpreq.arp_pa) = hisaddr;
1118 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1119 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1128 * get_ether_addr - get the hardware address of an interface on the
1129 * the same subnet as ipaddr.
1134 get_ether_addr(ipaddr, hwaddr)
1136 struct sockaddr *hwaddr;
1138 struct ifreq *ifr, *ifend;
1139 u_int32_t ina, mask;
1142 struct ifreq ifs[MAX_IFS];
1145 ifc.ifc_len = sizeof(ifs);
1147 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1148 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1153 * Scan through looking for an interface with an Internet
1154 * address on the same subnet as `ipaddr'.
1156 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1157 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1158 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1159 if (ifr->ifr_addr.sa_family == AF_INET) {
1162 * Check that the interface is up, and not point-to-point
1165 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1166 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1168 if ((ifreq.ifr_flags &
1169 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1170 != (IFF_UP|IFF_BROADCAST))
1174 * Get its netmask and check that it's on the right subnet.
1176 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1178 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1179 mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
1180 if ((ipaddr & mask) != (ina & mask))
1189 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1192 * Grab the physical address for this interface.
1194 if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) {
1195 syslog(LOG_ERR, "Couldn't open /dev/nit: %m");
1198 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1199 if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0
1200 || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) {
1201 syslog(LOG_ERR, "Couldn't get hardware address for %s: %m",
1207 hwaddr->sa_family = AF_UNSPEC;
1208 memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6);
1213 #define WTMPFILE "/usr/adm/wtmp"
1216 logwtmp(line, name, host)
1217 char *line, *name, *host;
1223 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1225 if (!fstat(fd, &buf)) {
1226 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1227 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1228 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1229 (void)time(&ut.ut_time);
1230 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1231 (void)ftruncate(fd, buf.st_size);
1237 * Return user specified netmask, modified by any mask we might determine
1238 * for address `addr' (in network byte order).
1239 * Here we scan through the system's list of interfaces, looking for
1240 * any non-point-to-point interfaces which might appear to be on the same
1241 * network as `addr'. If we find any, we OR in their netmask to the
1242 * user-specified netmask.
1248 u_int32_t mask, nmask, ina;
1249 struct ifreq *ifr, *ifend, ifreq;
1253 if (IN_CLASSA(addr)) /* determine network mask for address class */
1254 nmask = IN_CLASSA_NET;
1255 else if (IN_CLASSB(addr))
1256 nmask = IN_CLASSB_NET;
1258 nmask = IN_CLASSC_NET;
1259 /* class D nets are disallowed by bad_ip_adrs */
1260 mask = netmask | htonl(nmask);
1263 * Scan through the system's network interfaces.
1265 ifc.ifc_len = MAX_IFS * sizeof(struct ifreq);
1266 ifc.ifc_req = alloca(ifc.ifc_len);
1267 if (ifc.ifc_req == 0)
1269 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1270 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1273 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1274 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1276 * Check the interface's internet address.
1278 if (ifr->ifr_addr.sa_family != AF_INET)
1280 ina = INET_ADDR(ifr->ifr_addr);
1281 if ((ntohl(ina) & nmask) != (addr & nmask))
1284 * Check that the interface is up, and not point-to-point or loopback.
1286 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1287 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1289 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1293 * Get its netmask and OR it into our mask.
1295 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1297 mask |= INET_ADDR(ifreq.ifr_addr);
1304 strioctl(fd, cmd, ptr, ilen, olen)
1305 int fd, cmd, ilen, olen;
1308 struct strioctl str;
1314 if (ioctl(fd, I_STR, &str) == -1)
1316 if (str.ic_len != olen)
1317 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1318 olen, str.ic_len, cmd);
1323 * Code for locking/unlocking the serial device.
1324 * This code is derived from chat.c.
1327 #if !defined(HDB) && !defined(SUNOS3)
1328 #define HDB 1 /* ascii lock files are the default */
1334 # define LOCK_PREFIX "/usr/spool/locks/LCK.."
1336 # define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1338 #endif /* LOCK_DIR */
1340 static char *lock_file; /* name of lock file created */
1343 * lock - create a lock file for the named device.
1349 char hdb_lock_buffer[12];
1353 if ((p = strrchr(dev, '/')) != NULL)
1355 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1356 if (lock_file == NULL)
1357 novm("lock file name");
1358 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1360 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1362 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1363 /* Read the lock file to find out who has the device locked */
1365 n = read(fd, hdb_lock_buffer, 11);
1367 hdb_lock_buffer[n] = 0;
1368 pid = atoi(hdb_lock_buffer);
1371 n = read(fd, &pid, sizeof(pid));
1374 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1377 if (kill(pid, 0) == -1 && errno == ESRCH) {
1378 /* pid no longer exists - remove the lock file */
1379 if (unlink(lock_file) == 0) {
1381 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1385 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1388 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1393 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1400 sprintf(hdb_lock_buffer, "%10d\n", getpid());
1401 write(fd, hdb_lock_buffer, 11);
1404 write(fd, &pid, sizeof pid);
1412 * unlock - remove our lockfile
1425 * SunOS doesn't have strtoul :-(
1428 strtoul(str, ptr, base)
1432 return (unsigned long) strtol(str, ptr, base);