2 * System-dependent procedures for pppd under Solaris 2.
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-svr4.c,v 1.8 1995/12/11 05:18:39 paulus Exp $";
43 #include <sys/termiox.h>
47 #include <sys/types.h>
48 #include <sys/ioccom.h>
49 #include <sys/stream.h>
50 #include <sys/stropts.h>
51 #include <sys/socket.h>
52 #include <sys/sockio.h>
53 #include <sys/syslog.h>
54 #include <sys/sysmacros.h>
55 #include <sys/systeminfo.h>
58 #include <sys/mkdev.h>
60 #include <net/if_arp.h>
61 #include <net/route.h>
62 #include <net/ppp_defs.h>
63 #include <net/pppio.h>
64 #include <netinet/in.h>
69 static int fdmuxid = -1;
71 static int ipmuxid = -1;
73 static int restore_term;
74 static struct termios inittermios;
76 static struct termiox inittermiox;
78 static struct winsize wsinfo; /* Initial window size info */
79 static pid_t tty_sid; /* original session ID for terminal */
81 static int link_mtu, link_mru;
84 static int tty_nmodules;
85 static char tty_modules[NMODULES][FMNAMESZ+1];
87 static int if_is_up; /* Interface has been marked up */
88 static u_int32_t default_route_gateway; /* Gateway for default route added */
89 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
91 /* Prototypes for procedures local to this file. */
92 static int translate_speed __P((int));
93 static int baud_rate_of __P((int));
94 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
95 static int get_hw_addr __P((char *, struct sockaddr *));
96 static int dlpi_attach __P((int, int));
97 static int dlpi_info_req __P((int));
98 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
99 static int strioctl __P((int, int, void *, int, int));
102 * sys_init - System-dependent initialization.
107 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
108 setlogmask(LOG_UPTO(LOG_INFO));
110 setlogmask(LOG_UPTO(LOG_DEBUG));
112 ipfd = open("/dev/ip", O_RDWR, 0);
114 syslog(LOG_ERR, "Couldn't open IP device: %m");
120 * sys_cleanup - restore any system state we modified before exiting:
121 * mark the interface down, delete default route and/or proxy arp entry.
122 * This should call die() because it's called from die().
131 if (default_route_gateway)
132 cifdefaultroute(0, default_route_gateway);
134 cifproxyarp(0, proxy_arp_addr);
138 * daemon - Detach us from controlling terminal session.
141 daemon(nochdir, noclose)
142 int nochdir, noclose;
146 if ((pid = fork()) < 0)
149 exit(0); /* parent dies */
154 fclose(stdin); /* don't need stdin, stdout, stderr */
162 * note_debug_level - note a change in the debug level.
168 syslog(LOG_INFO, "Debug turned ON, Level %d", debug);
169 setlogmask(LOG_UPTO(LOG_DEBUG));
171 setlogmask(LOG_UPTO(LOG_WARNING));
176 * ppp_available - check whether the system has any ppp interfaces
183 return stat("/dev/ppp", &buf) >= 0;
187 * establish_ppp - Turn the serial port into a ppp interface.
196 union DL_primitives prim;
202 tty_sid = getsid((pid_t)0);
204 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
206 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
210 x = PPPDBG_LOG + PPPDBG_DRIVER;
211 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
214 /* Assign a new PPA and get its unit number. */
215 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
216 syslog(LOG_ERR, "Can't create new PPP interface: %m");
221 * Open the ppp device again and link it under the ip multiplexor.
222 * IP will assign a unit number which hopefully is the same as ifunit.
223 * I don't know any way to be certain they will be the same. :-(
225 ifd = open("/dev/ppp", O_RDWR, 0);
227 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
231 x = PPPDBG_LOG + PPPDBG_DRIVER;
232 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
235 if (ioctl(ifd, I_PUSH, "ip") < 0) {
236 syslog(LOG_ERR, "Can't push IP module: %m");
241 if (dlpi_attach(ifd, ifunit) < 0 ||
242 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
243 syslog(LOG_ERR, "Can't attach to ppp%d: %m", ifunit);
248 ipmuxid = ioctl(ipfd, I_LINK, ifd);
251 syslog(LOG_ERR, "Can't link PPP device to IP: %m");
256 /* Set the interface name for the link. */
257 (void) sprintf (ifr.ifr_name, "ppp%d", ifunit);
258 ifr.ifr_metric = ipmuxid;
259 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0) {
260 syslog(LOG_ERR, "Can't set interface name %s: %m", ifr.ifr_name);
265 /* Pop any existing modules off the tty stream. */
267 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
268 || ioctl(fd, I_POP, 0) < 0)
272 /* Push the async hdlc module and the compressor module. */
273 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
274 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
277 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
278 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
282 /* Link the serial port under the PPP multiplexor. */
283 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
284 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
290 * disestablish_ppp - Restore the serial port to normal operation.
291 * This shouldn't call die() because it's called from die().
299 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
301 syslog(LOG_ERR, "Can't unlink PPP from IP: %m");
306 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
308 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
313 while (ioctl(fd, I_POP, 0) >= 0)
315 for (i = tty_nmodules - 1; i >= 0; --i)
316 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
317 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
320 if (hungup && default_device && tty_sid > 0) {
322 * If we have received a hangup, we need to send a SIGHUP
323 * to the terminal's controlling process. The reason is
324 * that the original stream head for the terminal hasn't
325 * seen the M_HANGUP message (it went up through the ppp
326 * driver to the stream head for our fd to /dev/ppp).
328 kill(tty_sid, SIGHUP);
334 * List of valid speeds.
337 int speed_int, speed_val;
409 * Translate from bits/second to a speed_t.
415 struct speed *speedp;
419 for (speedp = speeds; speedp->speed_int; speedp++)
420 if (bps == speedp->speed_int)
421 return speedp->speed_val;
422 syslog(LOG_WARNING, "speed %d not supported", bps);
427 * Translate from a speed_t to bits/second.
433 struct speed *speedp;
437 for (speedp = speeds; speedp->speed_int; speedp++)
438 if (speed == speedp->speed_val)
439 return speedp->speed_int;
444 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
445 * at the requested speed, etc. If `local' is true, set CLOCAL
446 * regardless of whether the modem option was specified.
449 set_up_tty(fd, local)
454 #if !defined (CRTSCTS)
458 if (tcgetattr(fd, &tios) < 0) {
459 syslog(LOG_ERR, "tcgetattr: %m");
464 if (ioctl (fd, TCGETX, &tiox) < 0) {
465 syslog (LOG_ERR, "TCGETX: %m");
475 ioctl(fd, TIOCGWINSZ, &wsinfo);
478 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
481 tios.c_cflag |= CRTSCTS;
482 else if (crtscts < 0)
483 tios.c_cflag &= ~CRTSCTS;
486 tiox.x_hflag |= RTSXOFF|CTSXON;
488 else if (crtscts < 0) {
489 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
493 tios.c_cflag |= CS8 | CREAD | HUPCL;
495 tios.c_cflag |= CLOCAL;
496 tios.c_iflag = IGNBRK | IGNPAR;
500 tios.c_cc[VTIME] = 0;
503 tios.c_iflag |= IXON | IXOFF;
504 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
505 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
508 speed = translate_speed(inspeed);
510 cfsetospeed(&tios, speed);
511 cfsetispeed(&tios, speed);
513 speed = cfgetospeed(&tios);
515 * We can't proceed if the serial port speed is 0,
516 * since that implies that the serial port is disabled.
519 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
525 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
526 syslog(LOG_ERR, "tcsetattr: %m");
531 if (ioctl (fd, TCSETXF, &tiox) < 0){
532 syslog (LOG_ERR, "TCSETXF: %m");
537 baud_rate = inspeed = baud_rate_of(speed);
542 * restore_tty - restore the terminal to the saved settings.
548 if (!default_device) {
550 * Turn off echoing, because otherwise we can get into
551 * a loop with the tty and the modem echoing to each other.
552 * We presume we are the sole user of this tty device, so
553 * when we close it, it will revert to its defaults anyway.
555 inittermios.c_lflag &= ~(ECHO | ECHONL);
557 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
558 if (!hungup && errno != ENXIO)
559 syslog(LOG_WARNING, "tcsetattr: %m");
561 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
562 if (!hungup && errno != ENXIO)
563 syslog (LOG_ERR, "TCSETXF: %m");
566 ioctl(fd, TIOCSWINSZ, &wsinfo);
572 * setdtr - control the DTR line on the serial port.
573 * This is called from die(), so it shouldn't call die().
579 int modembits = TIOCM_DTR;
581 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
585 * output - Output PPP packet.
598 log_packet(p, len, "sent ");
601 data.buf = (caddr_t) p;
603 while (putmsg(pppfd, NULL, &data, 0) < 0) {
604 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
606 syslog(LOG_ERR, "Couldn't send packet: %m");
610 pfd.events = POLLOUT;
611 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
616 * wait_input - wait until there is data available on fd,
617 * for the length of time specified by *timo (indefinite
622 struct timeval *timo;
627 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
629 pfd.events = POLLIN | POLLPRI | POLLHUP;
630 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
631 syslog(LOG_ERR, "poll: %m");
637 * read_packet - get a PPP packet from the serial device.
643 struct strbuf ctrl, data;
645 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
648 data.maxlen = PPP_MRU + PPP_HDRLEN;
649 data.buf = (caddr_t) buf;
650 ctrl.maxlen = sizeof(ctrlbuf);
651 ctrl.buf = (caddr_t) ctrlbuf;
653 len = getmsg(pppfd, &ctrl, &data, &flags);
655 if (errno = EAGAIN || errno == EINTR)
657 syslog(LOG_ERR, "Error reading packet: %m");
665 * Got a M_PROTO or M_PCPROTO message. Interpret it
666 * as a DLPI primitive.
669 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
670 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
676 * ppp_send_config - configure the transmit characteristics of
680 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
688 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
689 if (hungup && errno == ENXIO)
691 syslog(LOG_ERR, "Couldn't set MTU: %m");
693 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
694 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
696 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
697 cf[1] = COMP_PROT | COMP_AC;
698 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
699 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
704 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
707 ppp_set_xaccm(unit, accm)
711 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
712 if (!hungup || errno != ENXIO)
713 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
718 * ppp_recv_config - configure the receive-side characteristics of
722 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
730 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
731 if (hungup && errno == ENXIO)
733 syslog(LOG_ERR, "Couldn't set MRU: %m");
735 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
736 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
738 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
739 cf[1] = DECOMP_PROT | DECOMP_AC;
740 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
741 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
746 * ccp_test - ask kernel whether a given compression method
747 * is acceptable for use.
750 ccp_test(unit, opt_ptr, opt_len, for_transmit)
751 int unit, opt_len, for_transmit;
754 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
755 opt_ptr, opt_len, 0) >= 0)
757 return (errno == ENOSR)? 0: -1;
761 * ccp_flags_set - inform kernel about the current state of CCP.
764 ccp_flags_set(unit, isopen, isup)
765 int unit, isopen, isup;
769 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
770 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
771 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
772 if (!hungup || errno != ENXIO)
773 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
778 * ccp_fatal_error - returns 1 if decompression was disabled as a
779 * result of an error detected after decompression of a packet,
780 * 0 otherwise. This is necessary because of patent nonsense.
783 ccp_fatal_error(unit)
789 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
790 if (errno != ENXIO && errno != EINVAL)
791 syslog(LOG_ERR, "Couldn't get compression flags: %m");
794 return cf[0] & CCP_FATALERROR;
798 * sifvjcomp - config tcp header compression
801 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
802 int u, vjcomp, xcidcomp, xmaxcid;
808 maxcid[0] = xcidcomp;
809 maxcid[1] = 15; /* XXX should be rmaxcid */
810 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
811 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
815 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
816 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
817 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
818 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
820 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
827 * sifup - Config the interface up and enable IP packets to pass.
835 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
836 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
837 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
840 ifr.ifr_flags |= IFF_UP;
841 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
842 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
850 * sifdown - Config the interface down and disable IP.
860 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
861 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
862 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
865 ifr.ifr_flags &= ~IFF_UP;
866 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
867 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
874 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
877 * sifaddr - Config the interface IP addresses and netmask.
886 memset(&ifr, 0, sizeof(ifr));
887 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
888 ifr.ifr_addr.sa_family = AF_INET;
889 INET_ADDR(ifr.ifr_addr) = o;
890 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
891 syslog(LOG_ERR, "Couldn't set local IP address: %m");
893 ifr.ifr_dstaddr.sa_family = AF_INET;
894 INET_ADDR(ifr.ifr_dstaddr) = h;
895 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
896 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
898 ifr.ifr_addr.sa_family = AF_INET;
899 INET_ADDR(ifr.ifr_addr) = m;
900 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
901 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
903 ifr.ifr_metric = link_mtu;
904 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
905 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
912 * cifaddr - Clear the interface IP addresses, and delete routes
913 * through the interface if possible.
922 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
923 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
933 * sifdefaultroute - assign a default route through the address given.
936 sifdefaultroute(u, g)
942 rt.rt_dst.sa_family = AF_INET;
943 INET_ADDR(rt.rt_dst) = 0;
944 rt.rt_gateway.sa_family = AF_INET;
945 INET_ADDR(rt.rt_gateway) = g;
946 rt.rt_flags = RTF_GATEWAY;
948 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
949 syslog(LOG_ERR, "Can't add default route: %m");
953 default_route_gateway = g;
958 * cifdefaultroute - delete a default route through the address given.
961 cifdefaultroute(u, g)
967 rt.rt_dst.sa_family = AF_INET;
968 INET_ADDR(rt.rt_dst) = 0;
969 rt.rt_gateway.sa_family = AF_INET;
970 INET_ADDR(rt.rt_gateway) = g;
971 rt.rt_flags = RTF_GATEWAY;
973 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
974 syslog(LOG_ERR, "Can't delete default route: %m");
978 default_route_gateway = 0;
983 * sifproxyarp - Make a proxy ARP entry for the peer.
986 sifproxyarp(unit, hisaddr)
990 struct arpreq arpreq;
992 memset(&arpreq, 0, sizeof(arpreq));
993 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
996 arpreq.arp_pa.sa_family = AF_INET;
997 INET_ADDR(arpreq.arp_pa) = hisaddr;
998 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
999 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1000 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1004 proxy_arp_addr = hisaddr;
1009 * cifproxyarp - Delete the proxy ARP entry for the peer.
1012 cifproxyarp(unit, hisaddr)
1016 struct arpreq arpreq;
1018 memset(&arpreq, 0, sizeof(arpreq));
1019 arpreq.arp_pa.sa_family = AF_INET;
1020 INET_ADDR(arpreq.arp_pa) = hisaddr;
1021 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1022 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1031 * get_ether_addr - get the hardware address of an interface on the
1032 * the same subnet as ipaddr.
1037 get_ether_addr(ipaddr, hwaddr)
1039 struct sockaddr *hwaddr;
1041 struct ifreq *ifr, *ifend, ifreq;
1044 u_int32_t ina, mask;
1047 * Scan through the system's network interfaces.
1050 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1053 ifc.ifc_len = nif * sizeof(struct ifreq);
1054 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1055 if (ifc.ifc_req == 0)
1057 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1058 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1061 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1062 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1063 if (ifr->ifr_addr.sa_family != AF_INET)
1066 * Check that the interface is up, and not point-to-point or loopback.
1068 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1069 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1071 if ((ifreq.ifr_flags &
1072 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1073 != (IFF_UP|IFF_BROADCAST))
1076 * Get its netmask and check that it's on the right subnet.
1078 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1080 ina = INET_ADDR(ifr->ifr_addr);
1081 mask = INET_ADDR(ifreq.ifr_addr);
1082 if ((ipaddr & mask) == (ina & mask))
1087 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1091 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1092 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1093 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1101 * get_hw_addr - obtain the hardware address for a named interface.
1104 get_hw_addr(name, hwaddr)
1106 struct sockaddr *hwaddr;
1109 int unit, iffd, adrlen;
1110 unsigned char *adrp;
1113 union DL_primitives prim;
1118 * We have to open the device and ask it for its hardware address.
1119 * First split apart the device name and unit.
1121 strcpy(ifdev, "/dev/");
1122 q = ifdev + 5; /* strlen("/dev/") */
1123 while (*name != 0 && !isdigit(*name))
1129 * Open the device and do a DLPI attach and phys_addr_req.
1131 iffd = open(ifdev, O_RDWR);
1133 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1136 if (dlpi_attach(iffd, unit) < 0
1137 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1138 || dlpi_info_req(iffd) < 0
1139 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1144 adrlen = reply.prim.info_ack.dl_addr_length;
1145 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1146 #if DL_CURRENT_VERSION >= 2
1147 if (reply.prim.info_ack.dl_sap_length < 0)
1148 adrlen += reply.prim.info_ack.dl_sap_length;
1150 adrp += reply.prim.info_ack.dl_sap_length;
1152 hwaddr->sa_family = AF_UNSPEC;
1153 memcpy(hwaddr->sa_data, adrp, adrlen);
1159 dlpi_attach(fd, ppa)
1162 dl_attach_req_t req;
1165 req.dl_primitive = DL_ATTACH_REQ;
1167 buf.len = sizeof(req);
1168 buf.buf = (void *) &req;
1169 return putmsg(fd, &buf, NULL, RS_HIPRI);
1179 req.dl_primitive = DL_INFO_REQ;
1180 buf.len = sizeof(req);
1181 buf.buf = (void *) &req;
1182 return putmsg(fd, &buf, NULL, RS_HIPRI);
1186 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1187 union DL_primitives *reply;
1188 int fd, expected_prim, maxlen;
1195 * Use poll to wait for a message with a timeout.
1198 pfd.events = POLLIN | POLLPRI;
1200 n = poll(&pfd, 1, 1000);
1201 } while (n == -1 && errno == EINTR);
1208 buf.maxlen = maxlen;
1209 buf.buf = (void *) reply;
1211 if (getmsg(fd, &buf, NULL, &flags) < 0)
1214 if (buf.len < sizeof(ulong)) {
1216 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1220 if (reply->dl_primitive == expected_prim)
1224 if (reply->dl_primitive == DL_ERROR_ACK) {
1225 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1226 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1227 reply->error_ack.dl_error_primitive);
1229 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1230 reply->dl_primitive);
1238 * Return user specified netmask, modified by any mask we might determine
1239 * for address `addr' (in network byte order).
1240 * Here we scan through the system's list of interfaces, looking for
1241 * any non-point-to-point interfaces which might appear to be on the same
1242 * network as `addr'. If we find any, we OR in their netmask to the
1243 * user-specified netmask.
1249 u_int32_t mask, nmask, ina;
1250 struct ifreq *ifr, *ifend, ifreq;
1255 if (IN_CLASSA(addr)) /* determine network mask for address class */
1256 nmask = IN_CLASSA_NET;
1257 else if (IN_CLASSB(addr))
1258 nmask = IN_CLASSB_NET;
1260 nmask = IN_CLASSC_NET;
1261 /* class D nets are disallowed by bad_ip_adrs */
1262 mask = netmask | htonl(nmask);
1265 * Scan through the system's network interfaces.
1268 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1271 ifc.ifc_len = nif * sizeof(struct ifreq);
1272 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1273 if (ifc.ifc_req == 0)
1275 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1276 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1279 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1280 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1282 * Check the interface's internet address.
1284 if (ifr->ifr_addr.sa_family != AF_INET)
1286 ina = INET_ADDR(ifr->ifr_addr);
1287 if ((ntohl(ina) & nmask) != (addr & nmask))
1290 * Check that the interface is up, and not point-to-point or loopback.
1292 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1293 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1295 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1299 * Get its netmask and OR it into our mask.
1301 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1303 mask |= INET_ADDR(ifreq.ifr_addr);
1310 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1313 logwtmp(line, name, host)
1314 char *line, *name, *host;
1316 static struct utmpx utmpx;
1320 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1321 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1322 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1323 utmpx.ut_pid = getpid();
1324 utmpx.ut_type = USER_PROCESS;
1326 utmpx.ut_type = DEAD_PROCESS;
1328 gettimeofday(&utmpx.ut_tv, NULL);
1329 updwtmpx("/var/adm/wtmpx", &utmpx);
1334 * gethostid - return the serial number of this machine.
1341 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1342 syslog(LOG_ERR, "sysinfo: %m");
1345 return (int) strtoul(buf, NULL, 16);
1349 strioctl(fd, cmd, ptr, ilen, olen)
1350 int fd, cmd, ilen, olen;
1353 struct strioctl str;
1359 if (ioctl(fd, I_STR, &str) == -1)
1361 if (str.ic_len != olen)
1362 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1363 olen, str.ic_len, cmd);
1368 * lock - create a lock file for the named lock device
1371 #define LOCK_PREFIX "/var/spool/locks/LK."
1372 static char lock_file[40]; /* name of lock file created */
1382 if (stat(dev, &sbuf) < 0) {
1383 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1386 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1387 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1390 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1391 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1393 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1395 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1396 /* Read the lock file to find out who has the device locked */
1397 n = read(fd, ascii_pid, 11);
1399 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1403 pid = atoi(ascii_pid);
1404 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1405 /* pid no longer exists - remove the lock file */
1406 if (unlink(lock_file) == 0) {
1408 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1412 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1415 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1420 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1425 sprintf(ascii_pid, "%10d\n", getpid());
1426 write(fd, ascii_pid, 11);
1433 * unlock - remove our lockfile