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 1.10 1996/04/04 04:07:30 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 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 default_route_gateway; /* Gateway for default route added */
91 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
93 /* Prototypes for procedures local to this file. */
94 static int translate_speed __P((int));
95 static int baud_rate_of __P((int));
96 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
97 static int get_hw_addr __P((char *, struct sockaddr *));
98 static int dlpi_attach __P((int, int));
99 static int dlpi_info_req __P((int));
100 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
101 static int strioctl __P((int, int, void *, int, int));
104 * sys_init - System-dependent initialization.
113 union DL_primitives prim;
118 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
119 setlogmask(LOG_UPTO(LOG_INFO));
121 setlogmask(LOG_UPTO(LOG_DEBUG));
123 ipfd = open("/dev/ip", O_RDWR, 0);
125 syslog(LOG_ERR, "Couldn't open IP device: %m");
130 tty_sid = getsid((pid_t)0);
132 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
134 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
138 x = PPPDBG_LOG + PPPDBG_DRIVER;
139 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
142 /* Assign a new PPA and get its unit number. */
143 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
144 syslog(LOG_ERR, "Can't create new PPP interface: %m");
149 * Open the ppp device again and link it under the ip multiplexor.
150 * IP will assign a unit number which hopefully is the same as ifunit.
151 * I don't know any way to be certain they will be the same. :-(
153 ifd = open("/dev/ppp", O_RDWR, 0);
155 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
159 x = PPPDBG_LOG + PPPDBG_DRIVER;
160 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
163 if (ioctl(ifd, I_PUSH, "ip") < 0) {
164 syslog(LOG_ERR, "Can't push IP module: %m");
169 if (dlpi_attach(ifd, ifunit) < 0 ||
170 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
171 syslog(LOG_ERR, "Can't attach to ppp%d: %m", ifunit);
176 ipmuxid = ioctl(ipfd, I_LINK, ifd);
179 syslog(LOG_ERR, "Can't link PPP device to IP: %m");
184 /* Set the interface name for the link. */
185 (void) sprintf (ifr.ifr_name, "ppp%d", ifunit);
186 ifr.ifr_metric = ipmuxid;
187 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0) {
188 syslog(LOG_ERR, "Can't set interface name %s: %m", ifr.ifr_name);
195 * sys_cleanup - restore any system state we modified before exiting:
196 * mark the interface down, delete default route and/or proxy arp entry.
197 * This should call die() because it's called from die().
206 if (default_route_gateway)
207 cifdefaultroute(0, default_route_gateway);
209 cifproxyarp(0, proxy_arp_addr);
213 * sys_close - Clean up in a child process before execing.
225 * sys_check_options - check the options that the user specified
234 * daemon - Detach us from controlling terminal session.
237 daemon(nochdir, noclose)
238 int nochdir, noclose;
242 if ((pid = fork()) < 0)
245 exit(0); /* parent dies */
250 fclose(stdin); /* don't need stdin, stdout, stderr */
258 * note_debug_level - note a change in the debug level.
264 setlogmask(LOG_UPTO(LOG_DEBUG));
266 setlogmask(LOG_UPTO(LOG_WARNING));
271 * ppp_available - check whether the system has any ppp interfaces
278 return stat("/dev/ppp", &buf) >= 0;
282 * establish_ppp - Turn the serial port into a ppp interface.
290 /* Pop any existing modules off the tty stream. */
292 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
293 || ioctl(fd, I_POP, 0) < 0)
297 /* Push the async hdlc module and the compressor module. */
298 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
299 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
302 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
303 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
307 /* Link the serial port under the PPP multiplexor. */
308 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
309 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
315 * restore_loop - reattach the ppp unit to the loopback.
316 * This doesn't need to do anything because disestablish_ppp does it.
324 * disestablish_ppp - Restore the serial port to normal operation.
325 * It attempts to reconstruct the stream with the previously popped
326 * modules. This shouldn't call die() because it's called from die().
335 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
337 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
342 while (ioctl(fd, I_POP, 0) >= 0)
344 for (i = tty_nmodules - 1; i >= 0; --i)
345 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
346 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
349 if (hungup && default_device && tty_sid > 0) {
351 * If we have received a hangup, we need to send a SIGHUP
352 * to the terminal's controlling process. The reason is
353 * that the original stream head for the terminal hasn't
354 * seen the M_HANGUP message (it went up through the ppp
355 * driver to the stream head for our fd to /dev/ppp).
357 kill(tty_sid, SIGHUP);
363 * Check whether the link seems not to be 8-bit clean.
371 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
376 s = "bit 7 set to 1";
379 s = "bit 7 set to 0";
389 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
390 syslog(LOG_WARNING, "All received characters had %s", s);
395 * List of valid speeds.
398 int speed_int, speed_val;
470 * Translate from bits/second to a speed_t.
476 struct speed *speedp;
480 for (speedp = speeds; speedp->speed_int; speedp++)
481 if (bps == speedp->speed_int)
482 return speedp->speed_val;
483 syslog(LOG_WARNING, "speed %d not supported", bps);
488 * Translate from a speed_t to bits/second.
494 struct speed *speedp;
498 for (speedp = speeds; speedp->speed_int; speedp++)
499 if (speed == speedp->speed_val)
500 return speedp->speed_int;
505 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
506 * at the requested speed, etc. If `local' is true, set CLOCAL
507 * regardless of whether the modem option was specified.
510 set_up_tty(fd, local)
515 #if !defined (CRTSCTS)
519 if (tcgetattr(fd, &tios) < 0) {
520 syslog(LOG_ERR, "tcgetattr: %m");
525 if (ioctl (fd, TCGETX, &tiox) < 0) {
526 syslog (LOG_ERR, "TCGETX: %m");
536 ioctl(fd, TIOCGWINSZ, &wsinfo);
539 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
542 tios.c_cflag |= CRTSCTS;
543 else if (crtscts < 0)
544 tios.c_cflag &= ~CRTSCTS;
547 tiox.x_hflag |= RTSXOFF|CTSXON;
549 else if (crtscts < 0) {
550 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
554 tios.c_cflag |= CS8 | CREAD | HUPCL;
556 tios.c_cflag |= CLOCAL;
557 tios.c_iflag = IGNBRK | IGNPAR;
561 tios.c_cc[VTIME] = 0;
564 tios.c_iflag |= IXON | IXOFF;
565 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
566 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
569 speed = translate_speed(inspeed);
571 cfsetospeed(&tios, speed);
572 cfsetispeed(&tios, speed);
574 speed = cfgetospeed(&tios);
576 * We can't proceed if the serial port speed is 0,
577 * since that implies that the serial port is disabled.
580 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
586 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
587 syslog(LOG_ERR, "tcsetattr: %m");
592 if (ioctl (fd, TCSETXF, &tiox) < 0){
593 syslog (LOG_ERR, "TCSETXF: %m");
598 baud_rate = inspeed = baud_rate_of(speed);
603 * restore_tty - restore the terminal to the saved settings.
610 if (!default_device) {
612 * Turn off echoing, because otherwise we can get into
613 * a loop with the tty and the modem echoing to each other.
614 * We presume we are the sole user of this tty device, so
615 * when we close it, it will revert to its defaults anyway.
617 inittermios.c_lflag &= ~(ECHO | ECHONL);
619 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
620 if (!hungup && errno != ENXIO)
621 syslog(LOG_WARNING, "tcsetattr: %m");
623 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
624 if (!hungup && errno != ENXIO)
625 syslog (LOG_ERR, "TCSETXF: %m");
628 ioctl(fd, TIOCSWINSZ, &wsinfo);
634 * setdtr - control the DTR line on the serial port.
635 * This is called from die(), so it shouldn't call die().
641 int modembits = TIOCM_DTR;
643 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
647 * open_loopback - open the device we use for getting packets
648 * in demand mode. Under Solaris 2, we use our existing fd
657 * output - Output PPP packet.
670 log_packet(p, len, "sent ");
673 data.buf = (caddr_t) p;
675 while (putmsg(pppfd, NULL, &data, 0) < 0) {
676 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
678 syslog(LOG_ERR, "Couldn't send packet: %m");
682 pfd.events = POLLOUT;
683 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
689 * wait_input - wait until there is data available on fd,
690 * for the length of time specified by *timo (indefinite
695 struct timeval *timo;
700 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
702 pfd.events = POLLIN | POLLPRI | POLLHUP;
703 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
704 syslog(LOG_ERR, "poll: %m");
710 * wait_loop_output - wait until there is data available on the
711 * loopback, for the length of time specified by *timo (indefinite
715 wait_loop_output(timo)
716 struct timeval *timo;
722 * wait_time - wait for a given length of time or until a
723 * signal is received.
727 struct timeval *timo;
731 n = select(0, NULL, NULL, NULL, timo);
732 if (n < 0 && errno != EINTR) {
733 syslog(LOG_ERR, "select: %m");
740 * read_packet - get a PPP packet from the serial device.
746 struct strbuf ctrl, data;
748 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
751 data.maxlen = PPP_MRU + PPP_HDRLEN;
752 data.buf = (caddr_t) buf;
753 ctrl.maxlen = sizeof(ctrlbuf);
754 ctrl.buf = (caddr_t) ctrlbuf;
756 len = getmsg(pppfd, &ctrl, &data, &flags);
758 if (errno = EAGAIN || errno == EINTR)
760 syslog(LOG_ERR, "Error reading packet: %m");
768 * Got a M_PROTO or M_PCPROTO message. Interpret it
769 * as a DLPI primitive??
772 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
773 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
779 * get_loop_output - get outgoing packets from the ppp device,
780 * and detect when we want to bring the real link up.
781 * Return value is 1 if we need to bring up the link, 0 otherwise.
789 while ((len = read_packet(inpacket_buf)) > 0) {
790 if (loop_frame(inpacket_buf, len))
797 * ppp_send_config - configure the transmit characteristics of
801 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
809 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
810 if (hungup && errno == ENXIO)
812 syslog(LOG_ERR, "Couldn't set MTU: %m");
814 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
815 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
817 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
818 cf[1] = COMP_PROT | COMP_AC;
819 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
820 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
825 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
828 ppp_set_xaccm(unit, accm)
832 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
833 if (!hungup || errno != ENXIO)
834 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
839 * ppp_recv_config - configure the receive-side characteristics of
843 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
851 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
852 if (hungup && errno == ENXIO)
854 syslog(LOG_ERR, "Couldn't set MRU: %m");
856 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
857 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
859 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
860 cf[1] = DECOMP_PROT | DECOMP_AC;
861 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
862 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
867 * ccp_test - ask kernel whether a given compression method
868 * is acceptable for use.
871 ccp_test(unit, opt_ptr, opt_len, for_transmit)
872 int unit, opt_len, for_transmit;
875 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
876 opt_ptr, opt_len, 0) >= 0)
878 return (errno == ENOSR)? 0: -1;
882 * ccp_flags_set - inform kernel about the current state of CCP.
885 ccp_flags_set(unit, isopen, isup)
886 int unit, isopen, isup;
890 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
891 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
892 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
893 if (!hungup || errno != ENXIO)
894 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
899 * get_idle_time - return how long the link has been idle.
906 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
911 * set_filters - transfer the pass and active filters to the kernel.
914 set_filters(pass, active)
915 struct bpf_program *pass, *active;
919 if (pass->bf_len > 0) {
920 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
921 sizeof(struct bpf_program), 0) < 0) {
922 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
926 if (active->bf_len > 0) {
927 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
928 sizeof(struct bpf_program), 0) < 0) {
929 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
938 * ccp_fatal_error - returns 1 if decompression was disabled as a
939 * result of an error detected after decompression of a packet,
940 * 0 otherwise. This is necessary because of patent nonsense.
943 ccp_fatal_error(unit)
949 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
950 if (errno != ENXIO && errno != EINVAL)
951 syslog(LOG_ERR, "Couldn't get compression flags: %m");
954 return cf[0] & CCP_FATALERROR;
958 * sifvjcomp - config tcp header compression
961 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
962 int u, vjcomp, xcidcomp, xmaxcid;
968 maxcid[0] = xcidcomp;
969 maxcid[1] = 15; /* XXX should be rmaxcid */
970 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
971 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
975 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
976 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
977 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
978 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
980 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
987 * sifup - Config the interface up and enable IP packets to pass.
995 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
996 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
997 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
1000 ifr.ifr_flags |= IFF_UP;
1001 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1002 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
1010 * sifdown - Config the interface down and disable IP.
1020 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1021 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1022 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
1025 ifr.ifr_flags &= ~IFF_UP;
1026 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1027 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1035 * sifnpmode - Set the mode for handling packets for a given NP.
1038 sifnpmode(u, proto, mode)
1046 npi[1] = (int) mode;
1047 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1048 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1054 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1057 * sifaddr - Config the interface IP addresses and netmask.
1066 memset(&ifr, 0, sizeof(ifr));
1067 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1068 ifr.ifr_addr.sa_family = AF_INET;
1069 INET_ADDR(ifr.ifr_addr) = m;
1070 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1071 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1073 ifr.ifr_addr.sa_family = AF_INET;
1074 INET_ADDR(ifr.ifr_addr) = o;
1075 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1076 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1078 ifr.ifr_dstaddr.sa_family = AF_INET;
1079 INET_ADDR(ifr.ifr_dstaddr) = h;
1080 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1081 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1083 ifr.ifr_metric = link_mtu;
1084 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1085 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1092 * cifaddr - Clear the interface IP addresses, and delete routes
1093 * through the interface if possible.
1102 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1103 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1113 * sifdefaultroute - assign a default route through the address given.
1116 sifdefaultroute(u, g)
1122 memset(&rt, 0, sizeof(rt));
1123 rt.rt_dst.sa_family = AF_INET;
1124 INET_ADDR(rt.rt_dst) = 0;
1125 rt.rt_gateway.sa_family = AF_INET;
1126 INET_ADDR(rt.rt_gateway) = g;
1127 rt.rt_flags = RTF_GATEWAY;
1129 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1130 syslog(LOG_ERR, "Can't add default route: %m");
1134 default_route_gateway = g;
1139 * cifdefaultroute - delete a default route through the address given.
1142 cifdefaultroute(u, g)
1148 memset(&rt, 0, sizeof(rt));
1149 rt.rt_dst.sa_family = AF_INET;
1150 INET_ADDR(rt.rt_dst) = 0;
1151 rt.rt_gateway.sa_family = AF_INET;
1152 INET_ADDR(rt.rt_gateway) = g;
1153 rt.rt_flags = RTF_GATEWAY;
1155 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1156 syslog(LOG_ERR, "Can't delete default route: %m");
1160 default_route_gateway = 0;
1165 * sifproxyarp - Make a proxy ARP entry for the peer.
1168 sifproxyarp(unit, hisaddr)
1172 struct arpreq arpreq;
1174 memset(&arpreq, 0, sizeof(arpreq));
1175 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1178 arpreq.arp_pa.sa_family = AF_INET;
1179 INET_ADDR(arpreq.arp_pa) = hisaddr;
1180 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1181 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1182 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1186 proxy_arp_addr = hisaddr;
1191 * cifproxyarp - Delete the proxy ARP entry for the peer.
1194 cifproxyarp(unit, hisaddr)
1198 struct arpreq arpreq;
1200 memset(&arpreq, 0, sizeof(arpreq));
1201 arpreq.arp_pa.sa_family = AF_INET;
1202 INET_ADDR(arpreq.arp_pa) = hisaddr;
1203 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1204 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1213 * get_ether_addr - get the hardware address of an interface on the
1214 * the same subnet as ipaddr.
1219 get_ether_addr(ipaddr, hwaddr)
1221 struct sockaddr *hwaddr;
1223 struct ifreq *ifr, *ifend, ifreq;
1226 u_int32_t ina, mask;
1229 * Scan through the system's network interfaces.
1232 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1235 ifc.ifc_len = nif * sizeof(struct ifreq);
1236 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1237 if (ifc.ifc_req == 0)
1239 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1240 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1243 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1244 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1245 if (ifr->ifr_addr.sa_family != AF_INET)
1248 * Check that the interface is up, and not point-to-point or loopback.
1250 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1251 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1253 if ((ifreq.ifr_flags &
1254 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1255 != (IFF_UP|IFF_BROADCAST))
1258 * Get its netmask and check that it's on the right subnet.
1260 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1262 ina = INET_ADDR(ifr->ifr_addr);
1263 mask = INET_ADDR(ifreq.ifr_addr);
1264 if ((ipaddr & mask) == (ina & mask))
1269 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1273 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1274 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1275 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1283 * get_hw_addr - obtain the hardware address for a named interface.
1286 get_hw_addr(name, hwaddr)
1288 struct sockaddr *hwaddr;
1291 int unit, iffd, adrlen;
1292 unsigned char *adrp;
1295 union DL_primitives prim;
1300 * We have to open the device and ask it for its hardware address.
1301 * First split apart the device name and unit.
1303 strcpy(ifdev, "/dev/");
1304 q = ifdev + 5; /* strlen("/dev/") */
1305 while (*name != 0 && !isdigit(*name))
1311 * Open the device and do a DLPI attach and phys_addr_req.
1313 iffd = open(ifdev, O_RDWR);
1315 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1318 if (dlpi_attach(iffd, unit) < 0
1319 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1320 || dlpi_info_req(iffd) < 0
1321 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1326 adrlen = reply.prim.info_ack.dl_addr_length;
1327 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1328 #if DL_CURRENT_VERSION >= 2
1329 if (reply.prim.info_ack.dl_sap_length < 0)
1330 adrlen += reply.prim.info_ack.dl_sap_length;
1332 adrp += reply.prim.info_ack.dl_sap_length;
1334 hwaddr->sa_family = AF_UNSPEC;
1335 memcpy(hwaddr->sa_data, adrp, adrlen);
1341 dlpi_attach(fd, ppa)
1344 dl_attach_req_t req;
1347 req.dl_primitive = DL_ATTACH_REQ;
1349 buf.len = sizeof(req);
1350 buf.buf = (void *) &req;
1351 return putmsg(fd, &buf, NULL, RS_HIPRI);
1361 req.dl_primitive = DL_INFO_REQ;
1362 buf.len = sizeof(req);
1363 buf.buf = (void *) &req;
1364 return putmsg(fd, &buf, NULL, RS_HIPRI);
1368 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1369 union DL_primitives *reply;
1370 int fd, expected_prim, maxlen;
1377 * Use poll to wait for a message with a timeout.
1380 pfd.events = POLLIN | POLLPRI;
1382 n = poll(&pfd, 1, 1000);
1383 } while (n == -1 && errno == EINTR);
1390 buf.maxlen = maxlen;
1391 buf.buf = (void *) reply;
1393 if (getmsg(fd, &buf, NULL, &flags) < 0)
1396 if (buf.len < sizeof(ulong)) {
1398 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1402 if (reply->dl_primitive == expected_prim)
1406 if (reply->dl_primitive == DL_ERROR_ACK) {
1407 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1408 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1409 reply->error_ack.dl_error_primitive);
1411 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1412 reply->dl_primitive);
1420 * Return user specified netmask, modified by any mask we might determine
1421 * for address `addr' (in network byte order).
1422 * Here we scan through the system's list of interfaces, looking for
1423 * any non-point-to-point interfaces which might appear to be on the same
1424 * network as `addr'. If we find any, we OR in their netmask to the
1425 * user-specified netmask.
1431 u_int32_t mask, nmask, ina;
1432 struct ifreq *ifr, *ifend, ifreq;
1437 if (IN_CLASSA(addr)) /* determine network mask for address class */
1438 nmask = IN_CLASSA_NET;
1439 else if (IN_CLASSB(addr))
1440 nmask = IN_CLASSB_NET;
1442 nmask = IN_CLASSC_NET;
1443 /* class D nets are disallowed by bad_ip_adrs */
1444 mask = netmask | htonl(nmask);
1447 * Scan through the system's network interfaces.
1450 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1453 ifc.ifc_len = nif * sizeof(struct ifreq);
1454 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1455 if (ifc.ifc_req == 0)
1457 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1458 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1461 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1462 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1464 * Check the interface's internet address.
1466 if (ifr->ifr_addr.sa_family != AF_INET)
1468 ina = INET_ADDR(ifr->ifr_addr);
1469 if ((ntohl(ina) & nmask) != (addr & nmask))
1472 * Check that the interface is up, and not point-to-point or loopback.
1474 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1475 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1477 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1481 * Get its netmask and OR it into our mask.
1483 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1485 mask |= INET_ADDR(ifreq.ifr_addr);
1492 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1495 logwtmp(line, name, host)
1496 char *line, *name, *host;
1498 static struct utmpx utmpx;
1502 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1503 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1504 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1505 utmpx.ut_pid = getpid();
1506 utmpx.ut_type = USER_PROCESS;
1508 utmpx.ut_type = DEAD_PROCESS;
1510 gettimeofday(&utmpx.ut_tv, NULL);
1511 updwtmpx("/var/adm/wtmpx", &utmpx);
1516 * gethostid - return the serial number of this machine.
1523 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1524 syslog(LOG_ERR, "sysinfo: %m");
1527 return (int) strtoul(buf, NULL, 16);
1531 strioctl(fd, cmd, ptr, ilen, olen)
1532 int fd, cmd, ilen, olen;
1535 struct strioctl str;
1541 if (ioctl(fd, I_STR, &str) == -1)
1543 if (str.ic_len != olen)
1544 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1545 olen, str.ic_len, cmd);
1550 * lock - create a lock file for the named lock device
1553 #define LOCK_PREFIX "/var/spool/locks/LK."
1554 static char lock_file[40]; /* name of lock file created */
1564 if (stat(dev, &sbuf) < 0) {
1565 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1568 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1569 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1572 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1573 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1575 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1577 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1578 /* Read the lock file to find out who has the device locked */
1579 n = read(fd, ascii_pid, 11);
1581 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1585 pid = atoi(ascii_pid);
1586 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1587 /* pid no longer exists - remove the lock file */
1588 if (unlink(lock_file) == 0) {
1590 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1594 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1597 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1602 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1607 sprintf(ascii_pid, "%10d\n", getpid());
1608 write(fd, ascii_pid, 11);
1615 * unlock - remove our lockfile