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 1.7 1997/03/04 03:43:54 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)
67 extern void *alloca();
72 static int fdmuxid = -1;
76 static int restore_term;
77 static struct termios inittermios;
78 static struct winsize wsinfo; /* Initial window size info */
79 static pid_t parent_pid; /* PID of our parent */
81 extern u_char inpacket_buf[]; /* borrowed from main.c */
83 static int link_mtu, link_mru;
86 static int tty_nmodules;
87 static char tty_modules[NMODULES][FMNAMESZ+1];
89 static int if_is_up; /* Interface has been marked up */
90 static u_int32_t ifaddrs[2]; /* local and remote addresses */
91 static u_int32_t default_route_gateway; /* Gateway for default route added */
92 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
94 /* Prototypes for procedures local to this file. */
95 static int translate_speed __P((int));
96 static int baud_rate_of __P((int));
97 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
98 static int strioctl __P((int, int, void *, int, int));
102 * sys_init - System-dependent initialization.
109 /* Get an internet socket for doing socket ioctl's on. */
110 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
111 syslog(LOG_ERR, "Couldn't create IP socket: %m");
116 * We may want to send a SIGHUP to the session leader associated
117 * with our controlling terminal later. Because SunOS doesn't
118 * have getsid(), we make do with sending the signal to our
121 parent_pid = getppid();
124 * Open the ppp device.
126 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
128 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
132 x = PPPDBG_LOG + PPPDBG_DRIVER;
133 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
136 /* Assign a new PPA and get its unit number. */
137 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
138 syslog(LOG_ERR, "Can't create new PPP interface: %m");
143 * Open the ppp device again and push the if_ppp module on it.
145 iffd = open("/dev/ppp", O_RDWR, 0);
147 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
151 x = PPPDBG_LOG + PPPDBG_DRIVER;
152 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
154 if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0) {
155 syslog(LOG_ERR, "Couldn't attach ppp interface to device: %m");
158 if (ioctl(iffd, I_PUSH, "if_ppp") < 0) {
159 syslog(LOG_ERR, "Can't push ppp interface module: %m");
163 x = PPPDBG_LOG + PPPDBG_IF;
164 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
166 if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0) {
167 syslog(LOG_ERR, "Couldn't create ppp interface unit: %m");
171 if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0) {
172 syslog(LOG_ERR, "Couldn't bind ppp interface to IP SAP: %m");
178 * sys_cleanup - restore any system state we modified before exiting:
179 * mark the interface down, delete default route and/or proxy arp entry.
180 * This shouldn't call die() because it's called from die().
188 cifaddr(0, ifaddrs[0], ifaddrs[1]);
189 if (default_route_gateway)
190 cifdefaultroute(0, 0, default_route_gateway);
192 cifproxyarp(0, proxy_arp_addr);
196 * 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 * ppp_available - check whether the system has any ppp interfaces
247 return stat("/dev/ppp", &buf) >= 0;
251 * establish_ppp - Turn the serial port into a ppp interface.
259 /* Pop any existing modules off the tty stream. */
261 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
262 || ioctl(fd, I_POP, 0) < 0)
266 /* Push the async hdlc module and the compressor module. */
267 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
268 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
271 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
272 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
276 /* Link the serial port under the PPP multiplexor. */
277 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
278 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
284 * restore_loop - reattach the ppp unit to the loopback.
285 * This doesn't need to do anything because disestablish_ppp does it.
293 * disestablish_ppp - Restore the serial port to normal operation.
294 * It attempts to reconstruct the stream with the previously popped
295 * modules. This shouldn't call die() because it's called from die().
304 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
306 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
311 while (ioctl(fd, I_POP, 0) >= 0)
313 for (i = tty_nmodules - 1; i >= 0; --i)
314 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
315 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
318 if (hungup && default_device && parent_pid > 0) {
320 * If we have received a hangup, we need to send a SIGHUP
321 * to the terminal's controlling process. The reason is
322 * that the original stream head for the terminal hasn't
323 * seen the M_HANGUP message (it went up through the ppp
324 * driver to the stream head for our fd to /dev/ppp).
325 * Actually we send the signal to the process that invoked
326 * pppd, since SunOS doesn't have getsid().
328 kill(parent_pid, SIGHUP);
334 * Check whether the link seems not to be 8-bit clean.
342 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
347 s = "bit 7 set to 1";
350 s = "bit 7 set to 0";
360 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
361 syslog(LOG_WARNING, "All received characters had %s", s);
366 * List of valid speeds.
369 int speed_int, speed_val;
441 * Translate from bits/second to a speed_t.
447 struct speed *speedp;
451 for (speedp = speeds; speedp->speed_int; speedp++)
452 if (bps == speedp->speed_int)
453 return speedp->speed_val;
454 syslog(LOG_WARNING, "speed %d not supported", bps);
459 * Translate from a speed_t to bits/second.
465 struct speed *speedp;
469 for (speedp = speeds; speedp->speed_int; speedp++)
470 if (speed == speedp->speed_val)
471 return speedp->speed_int;
476 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
477 * at the requested speed, etc. If `local' is true, set CLOCAL
478 * regardless of whether the modem option was specified.
481 set_up_tty(fd, local)
487 if (tcgetattr(fd, &tios) < 0) {
488 syslog(LOG_ERR, "tcgetattr: %m");
494 ioctl(fd, TIOCGWINSZ, &wsinfo);
497 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
499 tios.c_cflag |= CRTSCTS;
500 else if (crtscts < 0)
501 tios.c_cflag &= ~CRTSCTS;
503 tios.c_cflag |= CS8 | CREAD | HUPCL;
505 tios.c_cflag |= CLOCAL;
506 tios.c_iflag = IGNBRK | IGNPAR;
510 tios.c_cc[VTIME] = 0;
513 tios.c_iflag |= IXON | IXOFF;
514 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
515 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
518 speed = translate_speed(inspeed);
520 cfsetospeed(&tios, speed);
521 cfsetispeed(&tios, speed);
523 speed = cfgetospeed(&tios);
525 * We can't proceed if the serial port speed is 0,
526 * since that implies that the serial port is disabled.
529 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
535 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
536 syslog(LOG_ERR, "tcsetattr: %m");
540 baud_rate = inspeed = baud_rate_of(speed);
545 * restore_tty - restore the terminal to the saved settings.
552 if (!default_device) {
554 * Turn off echoing, because otherwise we can get into
555 * a loop with the tty and the modem echoing to each other.
556 * We presume we are the sole user of this tty device, so
557 * when we close it, it will revert to its defaults anyway.
559 inittermios.c_lflag &= ~(ECHO | ECHONL);
561 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
562 if (!hungup && errno != ENXIO)
563 syslog(LOG_WARNING, "tcsetattr: %m");
564 ioctl(fd, TIOCSWINSZ, &wsinfo);
570 * setdtr - control the DTR line on the serial port.
571 * This is called from die(), so it shouldn't call die().
577 int modembits = TIOCM_DTR;
579 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
583 * open_loopback - open the device we use for getting packets
584 * in demand mode. Under Solaris 2, we use our existing fd
593 * output - Output PPP packet.
606 log_packet(p, len, "sent ");
609 data.buf = (caddr_t) p;
611 while (putmsg(pppfd, NULL, &data, 0) < 0) {
612 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
614 syslog(LOG_ERR, "Couldn't send packet: %m");
618 pfd.events = POLLOUT;
619 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
625 * wait_input - wait until there is data available on fd,
626 * for the length of time specified by *timo (indefinite
631 struct timeval *timo;
636 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
638 pfd.events = POLLIN | POLLPRI | POLLHUP;
639 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
640 syslog(LOG_ERR, "poll: %m");
646 * wait_loop_output - wait until there is data available on the
647 * loopback, for the length of time specified by *timo (indefinite
651 wait_loop_output(timo)
652 struct timeval *timo;
658 * wait_time - wait for a given length of time or until a
659 * signal is received.
663 struct timeval *timo;
667 n = select(0, NULL, NULL, NULL, timo);
668 if (n < 0 && errno != EINTR) {
669 syslog(LOG_ERR, "select: %m");
676 * read_packet - get a PPP packet from the serial device.
682 struct strbuf ctrl, data;
684 unsigned char ctrlbuf[64];
687 data.maxlen = PPP_MRU + PPP_HDRLEN;
688 data.buf = (caddr_t) buf;
689 ctrl.maxlen = sizeof(ctrlbuf);
690 ctrl.buf = (caddr_t) ctrlbuf;
692 len = getmsg(pppfd, &ctrl, &data, &flags);
694 if (errno = EAGAIN || errno == EINTR)
696 syslog(LOG_ERR, "Error reading packet: %m");
704 * Got a M_PROTO or M_PCPROTO message. Huh?
707 syslog(LOG_DEBUG, "got ctrl msg len=%d", ctrl.len);
713 * get_loop_output - get outgoing packets from the ppp device,
714 * and detect when we want to bring the real link up.
715 * Return value is 1 if we need to bring up the link, 0 otherwise.
723 while ((len = read_packet(inpacket_buf)) > 0) {
724 if (loop_frame(inpacket_buf, len))
731 * ppp_send_config - configure the transmit characteristics of
735 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
743 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
744 if (hungup && errno == ENXIO)
746 syslog(LOG_ERR, "Couldn't set MTU: %m");
748 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
749 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
751 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
752 cf[1] = COMP_PROT | COMP_AC;
753 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
754 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
759 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
762 ppp_set_xaccm(unit, accm)
766 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
767 if (!hungup || errno != ENXIO)
768 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
773 * ppp_recv_config - configure the receive-side characteristics of
777 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
785 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
786 if (hungup && errno == ENXIO)
788 syslog(LOG_ERR, "Couldn't set MRU: %m");
790 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
791 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
793 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
794 cf[1] = DECOMP_PROT | DECOMP_AC;
795 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
796 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
801 * ccp_test - ask kernel whether a given compression method
802 * is acceptable for use.
805 ccp_test(unit, opt_ptr, opt_len, for_transmit)
806 int unit, opt_len, for_transmit;
809 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
810 opt_ptr, opt_len, 0) >= 0)
812 return (errno == ENOSR)? 0: -1;
816 * ccp_flags_set - inform kernel about the current state of CCP.
819 ccp_flags_set(unit, isopen, isup)
820 int unit, isopen, isup;
824 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
825 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
826 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
827 if (!hungup || errno != ENXIO)
828 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
833 * get_idle_time - return how long the link has been idle.
840 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
845 * ccp_fatal_error - returns 1 if decompression was disabled as a
846 * result of an error detected after decompression of a packet,
847 * 0 otherwise. This is necessary because of patent nonsense.
850 ccp_fatal_error(unit)
856 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
857 if (errno != ENXIO && errno != EINVAL)
858 syslog(LOG_ERR, "Couldn't get compression flags: %m");
861 return cf[0] & CCP_FATALERROR;
865 * sifvjcomp - config tcp header compression
868 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
869 int u, vjcomp, xcidcomp, xmaxcid;
875 maxcid[0] = xcidcomp;
876 maxcid[1] = 15; /* XXX should be rmaxcid */
877 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
878 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
882 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
883 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
884 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
885 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
887 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
894 * sifup - Config the interface up and enable IP packets to pass.
902 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
903 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
904 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
907 ifr.ifr_flags |= IFF_UP;
908 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
909 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
917 * sifdown - Config the interface down and disable IP.
925 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
926 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
927 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
930 if ((ifr.ifr_flags & IFF_UP) != 0) {
931 ifr.ifr_flags &= ~IFF_UP;
932 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
933 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
942 * sifnpmode - Set the mode for handling packets for a given NP.
945 sifnpmode(u, proto, mode)
954 if (strioctl(pppfd, PPPIO_NPMODE, npi, 2 * sizeof(int), 0) < 0) {
955 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
961 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
964 * sifaddr - Config the interface IP addresses and netmask.
973 memset(&ifr, 0, sizeof(ifr));
974 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
975 ifr.ifr_addr.sa_family = AF_INET;
976 INET_ADDR(ifr.ifr_addr) = m;
977 if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) {
978 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
980 ifr.ifr_addr.sa_family = AF_INET;
981 INET_ADDR(ifr.ifr_addr) = o;
982 if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) {
983 syslog(LOG_ERR, "Couldn't set local IP address: %m");
985 ifr.ifr_dstaddr.sa_family = AF_INET;
986 INET_ADDR(ifr.ifr_dstaddr) = h;
987 if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) {
988 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
990 ifr.ifr_metric = link_mtu;
991 if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
992 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1001 * cifaddr - Clear the interface IP addresses, and delete routes
1002 * through the interface if possible.
1011 bzero(&rt, sizeof(rt));
1012 rt.rt_dst.sa_family = AF_INET;
1013 INET_ADDR(rt.rt_dst) = h;
1014 rt.rt_gateway.sa_family = AF_INET;
1015 INET_ADDR(rt.rt_gateway) = o;
1016 rt.rt_flags = RTF_HOST;
1017 if (ioctl(sockfd, SIOCDELRT, &rt) < 0)
1018 syslog(LOG_ERR, "Couldn't delete route through interface: %m");
1024 * sifdefaultroute - assign a default route through the address given.
1027 sifdefaultroute(u, l, g)
1033 bzero(&rt, sizeof(rt));
1034 rt.rt_dst.sa_family = AF_INET;
1035 INET_ADDR(rt.rt_dst) = 0;
1036 rt.rt_gateway.sa_family = AF_INET;
1037 INET_ADDR(rt.rt_gateway) = g;
1038 rt.rt_flags = RTF_GATEWAY;
1040 if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
1041 syslog(LOG_ERR, "Can't add default route: %m");
1045 default_route_gateway = g;
1050 * cifdefaultroute - delete a default route through the address given.
1053 cifdefaultroute(u, l, g)
1059 bzero(&rt, sizeof(rt));
1060 rt.rt_dst.sa_family = AF_INET;
1061 INET_ADDR(rt.rt_dst) = 0;
1062 rt.rt_gateway.sa_family = AF_INET;
1063 INET_ADDR(rt.rt_gateway) = g;
1064 rt.rt_flags = RTF_GATEWAY;
1066 if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
1067 syslog(LOG_ERR, "Can't delete default route: %m");
1071 default_route_gateway = 0;
1076 * sifproxyarp - Make a proxy ARP entry for the peer.
1079 sifproxyarp(unit, hisaddr)
1083 struct arpreq arpreq;
1085 bzero(&arpreq, sizeof(arpreq));
1086 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1089 arpreq.arp_pa.sa_family = AF_INET;
1090 INET_ADDR(arpreq.arp_pa) = hisaddr;
1091 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1092 if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1093 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1097 proxy_arp_addr = hisaddr;
1102 * cifproxyarp - Delete the proxy ARP entry for the peer.
1105 cifproxyarp(unit, hisaddr)
1109 struct arpreq arpreq;
1111 bzero(&arpreq, sizeof(arpreq));
1112 arpreq.arp_pa.sa_family = AF_INET;
1113 INET_ADDR(arpreq.arp_pa) = hisaddr;
1114 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1115 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1124 * get_ether_addr - get the hardware address of an interface on the
1125 * the same subnet as ipaddr.
1130 get_ether_addr(ipaddr, hwaddr)
1132 struct sockaddr *hwaddr;
1134 struct ifreq *ifr, *ifend;
1135 u_int32_t ina, mask;
1138 struct ifreq ifs[MAX_IFS];
1141 ifc.ifc_len = sizeof(ifs);
1143 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1144 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1149 * Scan through looking for an interface with an Internet
1150 * address on the same subnet as `ipaddr'.
1152 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1153 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1154 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1155 if (ifr->ifr_addr.sa_family == AF_INET) {
1158 * Check that the interface is up, and not point-to-point
1161 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1162 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1164 if ((ifreq.ifr_flags &
1165 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1166 != (IFF_UP|IFF_BROADCAST))
1170 * Get its netmask and check that it's on the right subnet.
1172 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1174 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1175 mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
1176 if ((ipaddr & mask) != (ina & mask))
1185 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1188 * Grab the physical address for this interface.
1190 if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) {
1191 syslog(LOG_ERR, "Couldn't open /dev/nit: %m");
1194 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1195 if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0
1196 || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) {
1197 syslog(LOG_ERR, "Couldn't get hardware address for %s: %m",
1203 hwaddr->sa_family = AF_UNSPEC;
1204 memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6);
1209 #define WTMPFILE "/usr/adm/wtmp"
1212 logwtmp(line, name, host)
1213 const char *line, *name, *host;
1219 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1221 if (!fstat(fd, &buf)) {
1222 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1223 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1224 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1225 (void)time(&ut.ut_time);
1226 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1227 (void)ftruncate(fd, buf.st_size);
1233 * Return user specified netmask, modified by any mask we might determine
1234 * for address `addr' (in network byte order).
1235 * Here we scan through the system's list of interfaces, looking for
1236 * any non-point-to-point interfaces which might appear to be on the same
1237 * network as `addr'. If we find any, we OR in their netmask to the
1238 * user-specified netmask.
1244 u_int32_t mask, nmask, ina;
1245 struct ifreq *ifr, *ifend, ifreq;
1249 if (IN_CLASSA(addr)) /* determine network mask for address class */
1250 nmask = IN_CLASSA_NET;
1251 else if (IN_CLASSB(addr))
1252 nmask = IN_CLASSB_NET;
1254 nmask = IN_CLASSC_NET;
1255 /* class D nets are disallowed by bad_ip_adrs */
1256 mask = netmask | htonl(nmask);
1259 * Scan through the system's network interfaces.
1261 ifc.ifc_len = MAX_IFS * sizeof(struct ifreq);
1262 ifc.ifc_req = alloca(ifc.ifc_len);
1263 if (ifc.ifc_req == 0)
1265 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1266 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1269 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1270 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1272 * Check the interface's internet address.
1274 if (ifr->ifr_addr.sa_family != AF_INET)
1276 ina = INET_ADDR(ifr->ifr_addr);
1277 if ((ntohl(ina) & nmask) != (addr & nmask))
1280 * Check that the interface is up, and not point-to-point or loopback.
1282 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1283 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1285 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1289 * Get its netmask and OR it into our mask.
1291 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1293 mask |= INET_ADDR(ifreq.ifr_addr);
1300 strioctl(fd, cmd, ptr, ilen, olen)
1301 int fd, cmd, ilen, olen;
1304 struct strioctl str;
1310 if (ioctl(fd, I_STR, &str) == -1)
1312 if (str.ic_len != olen)
1313 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1314 olen, str.ic_len, cmd);
1319 * Code for locking/unlocking the serial device.
1320 * This code is derived from chat.c.
1323 #if !defined(HDB) && !defined(SUNOS3)
1324 #define HDB 1 /* ascii lock files are the default */
1330 # define LOCK_PREFIX "/usr/spool/locks/LCK.."
1332 # define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1334 #endif /* LOCK_DIR */
1336 static char *lock_file; /* name of lock file created */
1339 * lock - create a lock file for the named device.
1345 char hdb_lock_buffer[12];
1349 if ((p = strrchr(dev, '/')) != NULL)
1351 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1352 if (lock_file == NULL)
1353 novm("lock file name");
1354 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1356 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1358 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1359 /* Read the lock file to find out who has the device locked */
1361 n = read(fd, hdb_lock_buffer, 11);
1363 hdb_lock_buffer[n] = 0;
1364 pid = atoi(hdb_lock_buffer);
1367 n = read(fd, &pid, sizeof(pid));
1370 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1373 if (kill(pid, 0) == -1 && errno == ESRCH) {
1374 /* pid no longer exists - remove the lock file */
1375 if (unlink(lock_file) == 0) {
1377 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1381 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1384 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1389 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1396 sprintf(hdb_lock_buffer, "%10d\n", getpid());
1397 write(fd, hdb_lock_buffer, 11);
1400 write(fd, &pid, sizeof pid);
1408 * unlock - remove our lockfile
1421 * SunOS doesn't have strtoul :-(
1424 strtoul(str, ptr, base)
1428 return (unsigned long) strtol(str, ptr, base);
1434 extern char *sys_errlist[];
1435 extern int sys_nerr;
1441 static char unknown[32];
1443 if (n > 0 && n < sys_nerr)
1444 return sys_errlist[n];
1445 sprintf(unknown, "Error %d", n);