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 1.5 1996/05/27 00:00:56 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 ifaddrs[2]; /* local and remote addresses */
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 strioctl __P((int, int, void *, int, int));
99 * sys_init - System-dependent initialization.
106 /* Get an internet socket for doing socket ioctl's on. */
107 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
108 syslog(LOG_ERR, "Couldn't create IP socket: %m");
113 * We may want to send a SIGHUP to the session leader associated
114 * with our controlling terminal later. Because SunOS doesn't
115 * have getsid(), we make do with sending the signal to our
118 parent_pid = getppid();
121 * Open the ppp device.
123 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
125 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
129 x = PPPDBG_LOG + PPPDBG_DRIVER;
130 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
133 /* Assign a new PPA and get its unit number. */
134 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
135 syslog(LOG_ERR, "Can't create new PPP interface: %m");
140 * Open the ppp device again and push the if_ppp module on it.
142 iffd = open("/dev/ppp", O_RDWR, 0);
144 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
148 x = PPPDBG_LOG + PPPDBG_DRIVER;
149 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
151 if (strioctl(iffd, PPPIO_ATTACH, &ifunit, sizeof(int), 0) < 0) {
152 syslog(LOG_ERR, "Couldn't attach ppp interface to device: %m");
155 if (ioctl(iffd, I_PUSH, "if_ppp") < 0) {
156 syslog(LOG_ERR, "Can't push ppp interface module: %m");
160 x = PPPDBG_LOG + PPPDBG_IF;
161 strioctl(iffd, PPPIO_DEBUG, &x, sizeof(int), 0);
163 if (strioctl(iffd, PPPIO_NEWPPA, &ifunit, sizeof(int), 0) < 0) {
164 syslog(LOG_ERR, "Couldn't create ppp interface unit: %m");
168 if (strioctl(iffd, PPPIO_BIND, &x, sizeof(int), 0) < 0) {
169 syslog(LOG_ERR, "Couldn't bind ppp interface to IP SAP: %m");
175 * sys_cleanup - restore any system state we modified before exiting:
176 * mark the interface down, delete default route and/or proxy arp entry.
177 * This shouldn't call die() because it's called from die().
185 cifaddr(0, ifaddrs[0], ifaddrs[1]);
186 if (default_route_gateway)
187 cifdefaultroute(0, default_route_gateway);
189 cifproxyarp(0, proxy_arp_addr);
193 * sys_close - Clean up in a child process before execing.
204 * sys_check_options - check the options that the user specified
213 * daemon - Detach us from controlling terminal session.
216 daemon(nochdir, noclose)
217 int nochdir, noclose;
221 if ((pid = fork()) < 0)
224 exit(0); /* parent dies */
229 fclose(stdin); /* don't need stdin, stdout, stderr */
237 * ppp_available - check whether the system has any ppp interfaces
244 return stat("/dev/ppp", &buf) >= 0;
248 * establish_ppp - Turn the serial port into a ppp interface.
256 /* Pop any existing modules off the tty stream. */
258 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
259 || ioctl(fd, I_POP, 0) < 0)
263 /* Push the async hdlc module and the compressor module. */
264 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
265 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
268 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
269 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
273 /* Link the serial port under the PPP multiplexor. */
274 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
275 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
281 * restore_loop - reattach the ppp unit to the loopback.
282 * This doesn't need to do anything because disestablish_ppp does it.
290 * disestablish_ppp - Restore the serial port to normal operation.
291 * It attempts to reconstruct the stream with the previously popped
292 * modules. This shouldn't call die() because it's called from die().
301 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
303 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
308 while (ioctl(fd, I_POP, 0) >= 0)
310 for (i = tty_nmodules - 1; i >= 0; --i)
311 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
312 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
315 if (hungup && default_device && parent_pid > 0) {
317 * If we have received a hangup, we need to send a SIGHUP
318 * to the terminal's controlling process. The reason is
319 * that the original stream head for the terminal hasn't
320 * seen the M_HANGUP message (it went up through the ppp
321 * driver to the stream head for our fd to /dev/ppp).
322 * Actually we send the signal to the process that invoked
323 * pppd, since SunOS doesn't have getsid().
325 kill(parent_pid, SIGHUP);
331 * Check whether the link seems not to be 8-bit clean.
339 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
344 s = "bit 7 set to 1";
347 s = "bit 7 set to 0";
357 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
358 syslog(LOG_WARNING, "All received characters had %s", s);
363 * List of valid speeds.
366 int speed_int, speed_val;
438 * Translate from bits/second to a speed_t.
444 struct speed *speedp;
448 for (speedp = speeds; speedp->speed_int; speedp++)
449 if (bps == speedp->speed_int)
450 return speedp->speed_val;
451 syslog(LOG_WARNING, "speed %d not supported", bps);
456 * Translate from a speed_t to bits/second.
462 struct speed *speedp;
466 for (speedp = speeds; speedp->speed_int; speedp++)
467 if (speed == speedp->speed_val)
468 return speedp->speed_int;
473 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
474 * at the requested speed, etc. If `local' is true, set CLOCAL
475 * regardless of whether the modem option was specified.
478 set_up_tty(fd, local)
484 if (tcgetattr(fd, &tios) < 0) {
485 syslog(LOG_ERR, "tcgetattr: %m");
491 ioctl(fd, TIOCGWINSZ, &wsinfo);
494 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
496 tios.c_cflag |= CRTSCTS;
497 else if (crtscts < 0)
498 tios.c_cflag &= ~CRTSCTS;
500 tios.c_cflag |= CS8 | CREAD | HUPCL;
502 tios.c_cflag |= CLOCAL;
503 tios.c_iflag = IGNBRK | IGNPAR;
507 tios.c_cc[VTIME] = 0;
510 tios.c_iflag |= IXON | IXOFF;
511 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
512 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
515 speed = translate_speed(inspeed);
517 cfsetospeed(&tios, speed);
518 cfsetispeed(&tios, speed);
520 speed = cfgetospeed(&tios);
522 * We can't proceed if the serial port speed is 0,
523 * since that implies that the serial port is disabled.
526 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
532 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
533 syslog(LOG_ERR, "tcsetattr: %m");
537 baud_rate = inspeed = baud_rate_of(speed);
542 * restore_tty - restore the terminal to the saved settings.
549 if (!default_device) {
551 * Turn off echoing, because otherwise we can get into
552 * a loop with the tty and the modem echoing to each other.
553 * We presume we are the sole user of this tty device, so
554 * when we close it, it will revert to its defaults anyway.
556 inittermios.c_lflag &= ~(ECHO | ECHONL);
558 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
559 if (!hungup && errno != ENXIO)
560 syslog(LOG_WARNING, "tcsetattr: %m");
561 ioctl(fd, TIOCSWINSZ, &wsinfo);
567 * setdtr - control the DTR line on the serial port.
568 * This is called from die(), so it shouldn't call die().
574 int modembits = TIOCM_DTR;
576 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
580 * open_loopback - open the device we use for getting packets
581 * in demand mode. Under Solaris 2, we use our existing fd
590 * output - Output PPP packet.
603 log_packet(p, len, "sent ");
606 data.buf = (caddr_t) p;
608 while (putmsg(pppfd, NULL, &data, 0) < 0) {
609 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
611 syslog(LOG_ERR, "Couldn't send packet: %m");
615 pfd.events = POLLOUT;
616 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
622 * wait_input - wait until there is data available on fd,
623 * for the length of time specified by *timo (indefinite
628 struct timeval *timo;
633 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
635 pfd.events = POLLIN | POLLPRI | POLLHUP;
636 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
637 syslog(LOG_ERR, "poll: %m");
643 * wait_loop_output - wait until there is data available on the
644 * loopback, for the length of time specified by *timo (indefinite
648 wait_loop_output(timo)
649 struct timeval *timo;
655 * wait_time - wait for a given length of time or until a
656 * signal is received.
660 struct timeval *timo;
664 n = select(0, NULL, NULL, NULL, timo);
665 if (n < 0 && errno != EINTR) {
666 syslog(LOG_ERR, "select: %m");
673 * read_packet - get a PPP packet from the serial device.
679 struct strbuf ctrl, data;
681 unsigned char ctrlbuf[64];
684 data.maxlen = PPP_MRU + PPP_HDRLEN;
685 data.buf = (caddr_t) buf;
686 ctrl.maxlen = sizeof(ctrlbuf);
687 ctrl.buf = (caddr_t) ctrlbuf;
689 len = getmsg(pppfd, &ctrl, &data, &flags);
691 if (errno = EAGAIN || errno == EINTR)
693 syslog(LOG_ERR, "Error reading packet: %m");
701 * Got a M_PROTO or M_PCPROTO message. Huh?
704 syslog(LOG_DEBUG, "got ctrl msg len=%d", ctrl.len);
710 * get_loop_output - get outgoing packets from the ppp device,
711 * and detect when we want to bring the real link up.
712 * Return value is 1 if we need to bring up the link, 0 otherwise.
720 while ((len = read_packet(inpacket_buf)) > 0) {
721 if (loop_frame(inpacket_buf, len))
728 * ppp_send_config - configure the transmit characteristics of
732 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
740 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
741 if (hungup && errno == ENXIO)
743 syslog(LOG_ERR, "Couldn't set MTU: %m");
745 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
746 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
748 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
749 cf[1] = COMP_PROT | COMP_AC;
750 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
751 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
756 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
759 ppp_set_xaccm(unit, accm)
763 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
764 if (!hungup || errno != ENXIO)
765 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
770 * ppp_recv_config - configure the receive-side characteristics of
774 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
782 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
783 if (hungup && errno == ENXIO)
785 syslog(LOG_ERR, "Couldn't set MRU: %m");
787 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
788 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
790 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
791 cf[1] = DECOMP_PROT | DECOMP_AC;
792 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
793 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
798 * ccp_test - ask kernel whether a given compression method
799 * is acceptable for use.
802 ccp_test(unit, opt_ptr, opt_len, for_transmit)
803 int unit, opt_len, for_transmit;
806 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
807 opt_ptr, opt_len, 0) >= 0)
809 return (errno == ENOSR)? 0: -1;
813 * ccp_flags_set - inform kernel about the current state of CCP.
816 ccp_flags_set(unit, isopen, isup)
817 int unit, isopen, isup;
821 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
822 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
823 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
824 if (!hungup || errno != ENXIO)
825 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
830 * get_idle_time - return how long the link has been idle.
837 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
842 * ccp_fatal_error - returns 1 if decompression was disabled as a
843 * result of an error detected after decompression of a packet,
844 * 0 otherwise. This is necessary because of patent nonsense.
847 ccp_fatal_error(unit)
853 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
854 if (errno != ENXIO && errno != EINVAL)
855 syslog(LOG_ERR, "Couldn't get compression flags: %m");
858 return cf[0] & CCP_FATALERROR;
862 * sifvjcomp - config tcp header compression
865 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
866 int u, vjcomp, xcidcomp, xmaxcid;
872 maxcid[0] = xcidcomp;
873 maxcid[1] = 15; /* XXX should be rmaxcid */
874 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
875 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
879 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
880 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
881 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
882 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
884 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
891 * sifup - Config the interface up and enable IP packets to pass.
899 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
900 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
901 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
904 ifr.ifr_flags |= IFF_UP;
905 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
906 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
914 * sifdown - Config the interface down and disable IP.
922 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
923 if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) < 0) {
924 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
927 if ((ifr.ifr_flags & IFF_UP) != 0) {
928 ifr.ifr_flags &= ~IFF_UP;
929 if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0) {
930 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
939 * sifnpmode - Set the mode for handling packets for a given NP.
942 sifnpmode(u, proto, mode)
951 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
952 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
958 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
961 * sifaddr - Config the interface IP addresses and netmask.
970 memset(&ifr, 0, sizeof(ifr));
971 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
972 ifr.ifr_addr.sa_family = AF_INET;
973 INET_ADDR(ifr.ifr_addr) = m;
974 if (ioctl(sockfd, SIOCSIFNETMASK, &ifr) < 0) {
975 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
977 ifr.ifr_addr.sa_family = AF_INET;
978 INET_ADDR(ifr.ifr_addr) = o;
979 if (ioctl(sockfd, SIOCSIFADDR, &ifr) < 0) {
980 syslog(LOG_ERR, "Couldn't set local IP address: %m");
982 ifr.ifr_dstaddr.sa_family = AF_INET;
983 INET_ADDR(ifr.ifr_dstaddr) = h;
984 if (ioctl(sockfd, SIOCSIFDSTADDR, &ifr) < 0) {
985 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
987 ifr.ifr_metric = link_mtu;
988 if (ioctl(sockfd, SIOCSIFMTU, &ifr) < 0) {
989 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
998 * cifaddr - Clear the interface IP addresses, and delete routes
999 * through the interface if possible.
1008 bzero(&rt, sizeof(rt));
1009 rt.rt_dst.sa_family = AF_INET;
1010 INET_ADDR(rt.rt_dst) = h;
1011 rt.rt_gateway.sa_family = AF_INET;
1012 INET_ADDR(rt.rt_gateway) = o;
1013 rt.rt_flags = RTF_HOST;
1014 if (ioctl(sockfd, SIOCDELRT, &rt) < 0)
1015 syslog(LOG_ERR, "Couldn't delete route through interface: %m");
1021 * sifdefaultroute - assign a default route through the address given.
1024 sifdefaultroute(u, g)
1030 bzero(&rt, sizeof(rt));
1031 rt.rt_dst.sa_family = AF_INET;
1032 INET_ADDR(rt.rt_dst) = 0;
1033 rt.rt_gateway.sa_family = AF_INET;
1034 INET_ADDR(rt.rt_gateway) = g;
1035 rt.rt_flags = RTF_GATEWAY;
1037 if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
1038 syslog(LOG_ERR, "Can't add default route: %m");
1042 default_route_gateway = g;
1047 * cifdefaultroute - delete a default route through the address given.
1050 cifdefaultroute(u, g)
1056 bzero(&rt, sizeof(rt));
1057 rt.rt_dst.sa_family = AF_INET;
1058 INET_ADDR(rt.rt_dst) = 0;
1059 rt.rt_gateway.sa_family = AF_INET;
1060 INET_ADDR(rt.rt_gateway) = g;
1061 rt.rt_flags = RTF_GATEWAY;
1063 if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
1064 syslog(LOG_ERR, "Can't delete default route: %m");
1068 default_route_gateway = 0;
1073 * sifproxyarp - Make a proxy ARP entry for the peer.
1076 sifproxyarp(unit, hisaddr)
1080 struct arpreq arpreq;
1082 bzero(&arpreq, sizeof(arpreq));
1083 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1086 arpreq.arp_pa.sa_family = AF_INET;
1087 INET_ADDR(arpreq.arp_pa) = hisaddr;
1088 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1089 if (ioctl(sockfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1090 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1094 proxy_arp_addr = hisaddr;
1099 * cifproxyarp - Delete the proxy ARP entry for the peer.
1102 cifproxyarp(unit, hisaddr)
1106 struct arpreq arpreq;
1108 bzero(&arpreq, sizeof(arpreq));
1109 arpreq.arp_pa.sa_family = AF_INET;
1110 INET_ADDR(arpreq.arp_pa) = hisaddr;
1111 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1112 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1121 * get_ether_addr - get the hardware address of an interface on the
1122 * the same subnet as ipaddr.
1127 get_ether_addr(ipaddr, hwaddr)
1129 struct sockaddr *hwaddr;
1131 struct ifreq *ifr, *ifend;
1132 u_int32_t ina, mask;
1135 struct ifreq ifs[MAX_IFS];
1138 ifc.ifc_len = sizeof(ifs);
1140 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1141 syslog(LOG_ERR, "ioctl(SIOCGIFCONF): %m");
1146 * Scan through looking for an interface with an Internet
1147 * address on the same subnet as `ipaddr'.
1149 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1150 for (ifr = ifc.ifc_req; ifr < ifend; ifr = (struct ifreq *)
1151 ((char *)&ifr->ifr_addr + sizeof(struct sockaddr))) {
1152 if (ifr->ifr_addr.sa_family == AF_INET) {
1155 * Check that the interface is up, and not point-to-point
1158 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1159 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1161 if ((ifreq.ifr_flags &
1162 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1163 != (IFF_UP|IFF_BROADCAST))
1167 * Get its netmask and check that it's on the right subnet.
1169 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1171 ina = ((struct sockaddr_in *) &ifr->ifr_addr)->sin_addr.s_addr;
1172 mask = ((struct sockaddr_in *) &ifreq.ifr_addr)->sin_addr.s_addr;
1173 if ((ipaddr & mask) != (ina & mask))
1182 syslog(LOG_INFO, "found interface %s for proxy arp", ifr->ifr_name);
1185 * Grab the physical address for this interface.
1187 if ((nit_fd = open("/dev/nit", O_RDONLY)) < 0) {
1188 syslog(LOG_ERR, "Couldn't open /dev/nit: %m");
1191 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1192 if (ioctl(nit_fd, NIOCBIND, &ifreq) < 0
1193 || ioctl(nit_fd, SIOCGIFADDR, &ifreq) < 0) {
1194 syslog(LOG_ERR, "Couldn't get hardware address for %s: %m",
1200 hwaddr->sa_family = AF_UNSPEC;
1201 memcpy(hwaddr->sa_data, ifreq.ifr_addr.sa_data, 6);
1206 #define WTMPFILE "/usr/adm/wtmp"
1209 logwtmp(line, name, host)
1210 char *line, *name, *host;
1216 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1218 if (!fstat(fd, &buf)) {
1219 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1220 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1221 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1222 (void)time(&ut.ut_time);
1223 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1224 (void)ftruncate(fd, buf.st_size);
1230 * Return user specified netmask, modified by any mask we might determine
1231 * for address `addr' (in network byte order).
1232 * Here we scan through the system's list of interfaces, looking for
1233 * any non-point-to-point interfaces which might appear to be on the same
1234 * network as `addr'. If we find any, we OR in their netmask to the
1235 * user-specified netmask.
1241 u_int32_t mask, nmask, ina;
1242 struct ifreq *ifr, *ifend, ifreq;
1246 if (IN_CLASSA(addr)) /* determine network mask for address class */
1247 nmask = IN_CLASSA_NET;
1248 else if (IN_CLASSB(addr))
1249 nmask = IN_CLASSB_NET;
1251 nmask = IN_CLASSC_NET;
1252 /* class D nets are disallowed by bad_ip_adrs */
1253 mask = netmask | htonl(nmask);
1256 * Scan through the system's network interfaces.
1258 ifc.ifc_len = MAX_IFS * sizeof(struct ifreq);
1259 ifc.ifc_req = alloca(ifc.ifc_len);
1260 if (ifc.ifc_req == 0)
1262 if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
1263 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1266 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1267 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1269 * Check the interface's internet address.
1271 if (ifr->ifr_addr.sa_family != AF_INET)
1273 ina = INET_ADDR(ifr->ifr_addr);
1274 if ((ntohl(ina) & nmask) != (addr & nmask))
1277 * Check that the interface is up, and not point-to-point or loopback.
1279 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1280 if (ioctl(sockfd, SIOCGIFFLAGS, &ifreq) < 0)
1282 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1286 * Get its netmask and OR it into our mask.
1288 if (ioctl(sockfd, SIOCGIFNETMASK, &ifreq) < 0)
1290 mask |= INET_ADDR(ifreq.ifr_addr);
1297 strioctl(fd, cmd, ptr, ilen, olen)
1298 int fd, cmd, ilen, olen;
1301 struct strioctl str;
1307 if (ioctl(fd, I_STR, &str) == -1)
1309 if (str.ic_len != olen)
1310 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1311 olen, str.ic_len, cmd);
1316 * Code for locking/unlocking the serial device.
1317 * This code is derived from chat.c.
1320 #if !defined(HDB) && !defined(SUNOS3)
1321 #define HDB 1 /* ascii lock files are the default */
1327 # define LOCK_PREFIX "/usr/spool/locks/LCK.."
1329 # define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1331 #endif /* LOCK_DIR */
1333 static char *lock_file; /* name of lock file created */
1336 * lock - create a lock file for the named device.
1342 char hdb_lock_buffer[12];
1346 if ((p = strrchr(dev, '/')) != NULL)
1348 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1349 if (lock_file == NULL)
1350 novm("lock file name");
1351 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1353 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1355 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1356 /* Read the lock file to find out who has the device locked */
1358 n = read(fd, hdb_lock_buffer, 11);
1360 hdb_lock_buffer[n] = 0;
1361 pid = atoi(hdb_lock_buffer);
1364 n = read(fd, &pid, sizeof(pid));
1367 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1370 if (kill(pid, 0) == -1 && errno == ESRCH) {
1371 /* pid no longer exists - remove the lock file */
1372 if (unlink(lock_file) == 0) {
1374 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1378 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1381 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1386 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1393 sprintf(hdb_lock_buffer, "%10d\n", getpid());
1394 write(fd, hdb_lock_buffer, 11);
1397 write(fd, &pid, sizeof pid);
1405 * unlock - remove our lockfile
1418 * SunOS doesn't have strtoul :-(
1421 strtoul(str, ptr, base)
1425 return (unsigned long) strtol(str, ptr, base);
1431 extern char *sys_errlist[];
1432 extern int sys_nerr;
1438 static char unknown[32];
1440 if (n > 0 && n < sys_nerr)
1441 return sys_errlist[n];
1442 sprintf(unknown, "Error %d", n);