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 1.9 1996/01/01 23:06:39 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 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
714 wait_loop_output(timo)
715 struct timeval *timo;
721 * wait_time - wait for a given length of time or until a
722 * signal is received.
725 struct timeval *timo;
729 n = select(0, NULL, NULL, NULL, timo);
730 if (n < 0 && errno != EINTR) {
731 syslog(LOG_ERR, "select: %m");
738 * read_packet - get a PPP packet from the serial device.
744 struct strbuf ctrl, data;
746 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
749 data.maxlen = PPP_MRU + PPP_HDRLEN;
750 data.buf = (caddr_t) buf;
751 ctrl.maxlen = sizeof(ctrlbuf);
752 ctrl.buf = (caddr_t) ctrlbuf;
754 len = getmsg(pppfd, &ctrl, &data, &flags);
756 if (errno = EAGAIN || errno == EINTR)
758 syslog(LOG_ERR, "Error reading packet: %m");
766 * Got a M_PROTO or M_PCPROTO message. Interpret it
767 * as a DLPI primitive??
770 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
771 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
777 * get_loop_output - get outgoing packets from the ppp device,
778 * and detect when we want to bring the real link up.
779 * Return value is 1 if we need to bring up the link, 0 otherwise.
787 while ((len = read_packet(inpacket_buf)) > 0) {
788 if (loop_frame(inpacket_buf, len))
795 * ppp_send_config - configure the transmit characteristics of
799 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
807 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
808 if (hungup && errno == ENXIO)
810 syslog(LOG_ERR, "Couldn't set MTU: %m");
812 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
813 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
815 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
816 cf[1] = COMP_PROT | COMP_AC;
817 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
818 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
823 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
826 ppp_set_xaccm(unit, accm)
830 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
831 if (!hungup || errno != ENXIO)
832 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
837 * ppp_recv_config - configure the receive-side characteristics of
841 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
849 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
850 if (hungup && errno == ENXIO)
852 syslog(LOG_ERR, "Couldn't set MRU: %m");
854 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
855 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
857 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
858 cf[1] = DECOMP_PROT | DECOMP_AC;
859 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
860 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
865 * ccp_test - ask kernel whether a given compression method
866 * is acceptable for use.
869 ccp_test(unit, opt_ptr, opt_len, for_transmit)
870 int unit, opt_len, for_transmit;
873 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
874 opt_ptr, opt_len, 0) >= 0)
876 return (errno == ENOSR)? 0: -1;
880 * ccp_flags_set - inform kernel about the current state of CCP.
883 ccp_flags_set(unit, isopen, isup)
884 int unit, isopen, isup;
888 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
889 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
890 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
891 if (!hungup || errno != ENXIO)
892 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
897 * get_idle_time - return how long the link has been idle.
904 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
909 * ccp_fatal_error - returns 1 if decompression was disabled as a
910 * result of an error detected after decompression of a packet,
911 * 0 otherwise. This is necessary because of patent nonsense.
914 ccp_fatal_error(unit)
920 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
921 if (errno != ENXIO && errno != EINVAL)
922 syslog(LOG_ERR, "Couldn't get compression flags: %m");
925 return cf[0] & CCP_FATALERROR;
929 * sifvjcomp - config tcp header compression
932 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
933 int u, vjcomp, xcidcomp, xmaxcid;
939 maxcid[0] = xcidcomp;
940 maxcid[1] = 15; /* XXX should be rmaxcid */
941 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
942 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
946 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
947 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
948 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
949 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
951 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
958 * sifup - Config the interface up and enable IP packets to pass.
966 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
967 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
968 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
971 ifr.ifr_flags |= IFF_UP;
972 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
973 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
981 * sifdown - Config the interface down and disable IP.
991 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
992 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
993 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
996 ifr.ifr_flags &= ~IFF_UP;
997 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
998 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1006 * sifnpmode - Set the mode for handling packets for a given NP.
1009 sifnpmode(u, proto, mode)
1017 npi[1] = (int) mode;
1018 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1019 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1025 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1028 * sifaddr - Config the interface IP addresses and netmask.
1037 memset(&ifr, 0, sizeof(ifr));
1038 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1039 ifr.ifr_addr.sa_family = AF_INET;
1040 INET_ADDR(ifr.ifr_addr) = o;
1041 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1042 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1044 ifr.ifr_dstaddr.sa_family = AF_INET;
1045 INET_ADDR(ifr.ifr_dstaddr) = h;
1046 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1047 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1049 ifr.ifr_addr.sa_family = AF_INET;
1050 INET_ADDR(ifr.ifr_addr) = m;
1051 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1052 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1054 ifr.ifr_metric = link_mtu;
1055 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1056 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1063 * cifaddr - Clear the interface IP addresses, and delete routes
1064 * through the interface if possible.
1073 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1074 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1084 * sifdefaultroute - assign a default route through the address given.
1087 sifdefaultroute(u, g)
1093 rt.rt_dst.sa_family = AF_INET;
1094 INET_ADDR(rt.rt_dst) = 0;
1095 rt.rt_gateway.sa_family = AF_INET;
1096 INET_ADDR(rt.rt_gateway) = g;
1097 rt.rt_flags = RTF_GATEWAY;
1099 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1100 syslog(LOG_ERR, "Can't add default route: %m");
1104 default_route_gateway = g;
1109 * cifdefaultroute - delete a default route through the address given.
1112 cifdefaultroute(u, g)
1118 rt.rt_dst.sa_family = AF_INET;
1119 INET_ADDR(rt.rt_dst) = 0;
1120 rt.rt_gateway.sa_family = AF_INET;
1121 INET_ADDR(rt.rt_gateway) = g;
1122 rt.rt_flags = RTF_GATEWAY;
1124 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1125 syslog(LOG_ERR, "Can't delete default route: %m");
1129 default_route_gateway = 0;
1134 * sifproxyarp - Make a proxy ARP entry for the peer.
1137 sifproxyarp(unit, hisaddr)
1141 struct arpreq arpreq;
1143 memset(&arpreq, 0, sizeof(arpreq));
1144 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1147 arpreq.arp_pa.sa_family = AF_INET;
1148 INET_ADDR(arpreq.arp_pa) = hisaddr;
1149 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1150 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1151 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1155 proxy_arp_addr = hisaddr;
1160 * cifproxyarp - Delete the proxy ARP entry for the peer.
1163 cifproxyarp(unit, hisaddr)
1167 struct arpreq arpreq;
1169 memset(&arpreq, 0, sizeof(arpreq));
1170 arpreq.arp_pa.sa_family = AF_INET;
1171 INET_ADDR(arpreq.arp_pa) = hisaddr;
1172 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1173 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1182 * get_ether_addr - get the hardware address of an interface on the
1183 * the same subnet as ipaddr.
1188 get_ether_addr(ipaddr, hwaddr)
1190 struct sockaddr *hwaddr;
1192 struct ifreq *ifr, *ifend, ifreq;
1195 u_int32_t ina, mask;
1198 * Scan through the system's network interfaces.
1201 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1204 ifc.ifc_len = nif * sizeof(struct ifreq);
1205 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1206 if (ifc.ifc_req == 0)
1208 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1209 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1212 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1213 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1214 if (ifr->ifr_addr.sa_family != AF_INET)
1217 * Check that the interface is up, and not point-to-point or loopback.
1219 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1220 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1222 if ((ifreq.ifr_flags &
1223 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1224 != (IFF_UP|IFF_BROADCAST))
1227 * Get its netmask and check that it's on the right subnet.
1229 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1231 ina = INET_ADDR(ifr->ifr_addr);
1232 mask = INET_ADDR(ifreq.ifr_addr);
1233 if ((ipaddr & mask) == (ina & mask))
1238 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1242 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1243 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1244 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1252 * get_hw_addr - obtain the hardware address for a named interface.
1255 get_hw_addr(name, hwaddr)
1257 struct sockaddr *hwaddr;
1260 int unit, iffd, adrlen;
1261 unsigned char *adrp;
1264 union DL_primitives prim;
1269 * We have to open the device and ask it for its hardware address.
1270 * First split apart the device name and unit.
1272 strcpy(ifdev, "/dev/");
1273 q = ifdev + 5; /* strlen("/dev/") */
1274 while (*name != 0 && !isdigit(*name))
1280 * Open the device and do a DLPI attach and phys_addr_req.
1282 iffd = open(ifdev, O_RDWR);
1284 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1287 if (dlpi_attach(iffd, unit) < 0
1288 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1289 || dlpi_info_req(iffd) < 0
1290 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1295 adrlen = reply.prim.info_ack.dl_addr_length;
1296 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1297 #if DL_CURRENT_VERSION >= 2
1298 if (reply.prim.info_ack.dl_sap_length < 0)
1299 adrlen += reply.prim.info_ack.dl_sap_length;
1301 adrp += reply.prim.info_ack.dl_sap_length;
1303 hwaddr->sa_family = AF_UNSPEC;
1304 memcpy(hwaddr->sa_data, adrp, adrlen);
1310 dlpi_attach(fd, ppa)
1313 dl_attach_req_t req;
1316 req.dl_primitive = DL_ATTACH_REQ;
1318 buf.len = sizeof(req);
1319 buf.buf = (void *) &req;
1320 return putmsg(fd, &buf, NULL, RS_HIPRI);
1330 req.dl_primitive = DL_INFO_REQ;
1331 buf.len = sizeof(req);
1332 buf.buf = (void *) &req;
1333 return putmsg(fd, &buf, NULL, RS_HIPRI);
1337 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1338 union DL_primitives *reply;
1339 int fd, expected_prim, maxlen;
1346 * Use poll to wait for a message with a timeout.
1349 pfd.events = POLLIN | POLLPRI;
1351 n = poll(&pfd, 1, 1000);
1352 } while (n == -1 && errno == EINTR);
1359 buf.maxlen = maxlen;
1360 buf.buf = (void *) reply;
1362 if (getmsg(fd, &buf, NULL, &flags) < 0)
1365 if (buf.len < sizeof(ulong)) {
1367 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1371 if (reply->dl_primitive == expected_prim)
1375 if (reply->dl_primitive == DL_ERROR_ACK) {
1376 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1377 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1378 reply->error_ack.dl_error_primitive);
1380 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1381 reply->dl_primitive);
1389 * Return user specified netmask, modified by any mask we might determine
1390 * for address `addr' (in network byte order).
1391 * Here we scan through the system's list of interfaces, looking for
1392 * any non-point-to-point interfaces which might appear to be on the same
1393 * network as `addr'. If we find any, we OR in their netmask to the
1394 * user-specified netmask.
1400 u_int32_t mask, nmask, ina;
1401 struct ifreq *ifr, *ifend, ifreq;
1406 if (IN_CLASSA(addr)) /* determine network mask for address class */
1407 nmask = IN_CLASSA_NET;
1408 else if (IN_CLASSB(addr))
1409 nmask = IN_CLASSB_NET;
1411 nmask = IN_CLASSC_NET;
1412 /* class D nets are disallowed by bad_ip_adrs */
1413 mask = netmask | htonl(nmask);
1416 * Scan through the system's network interfaces.
1419 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1422 ifc.ifc_len = nif * sizeof(struct ifreq);
1423 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1424 if (ifc.ifc_req == 0)
1426 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1427 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1430 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1431 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1433 * Check the interface's internet address.
1435 if (ifr->ifr_addr.sa_family != AF_INET)
1437 ina = INET_ADDR(ifr->ifr_addr);
1438 if ((ntohl(ina) & nmask) != (addr & nmask))
1441 * Check that the interface is up, and not point-to-point or loopback.
1443 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1444 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1446 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1450 * Get its netmask and OR it into our mask.
1452 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1454 mask |= INET_ADDR(ifreq.ifr_addr);
1461 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1464 logwtmp(line, name, host)
1465 char *line, *name, *host;
1467 static struct utmpx utmpx;
1471 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1472 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1473 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1474 utmpx.ut_pid = getpid();
1475 utmpx.ut_type = USER_PROCESS;
1477 utmpx.ut_type = DEAD_PROCESS;
1479 gettimeofday(&utmpx.ut_tv, NULL);
1480 updwtmpx("/var/adm/wtmpx", &utmpx);
1485 * gethostid - return the serial number of this machine.
1492 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1493 syslog(LOG_ERR, "sysinfo: %m");
1496 return (int) strtoul(buf, NULL, 16);
1500 strioctl(fd, cmd, ptr, ilen, olen)
1501 int fd, cmd, ilen, olen;
1504 struct strioctl str;
1510 if (ioctl(fd, I_STR, &str) == -1)
1512 if (str.ic_len != olen)
1513 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1514 olen, str.ic_len, cmd);
1519 * lock - create a lock file for the named lock device
1522 #define LOCK_PREFIX "/var/spool/locks/LK."
1523 static char lock_file[40]; /* name of lock file created */
1533 if (stat(dev, &sbuf) < 0) {
1534 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1537 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1538 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1541 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1542 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1544 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1546 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1547 /* Read the lock file to find out who has the device locked */
1548 n = read(fd, ascii_pid, 11);
1550 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1554 pid = atoi(ascii_pid);
1555 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1556 /* pid no longer exists - remove the lock file */
1557 if (unlink(lock_file) == 0) {
1559 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1563 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1566 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1571 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1576 sprintf(ascii_pid, "%10d\n", getpid());
1577 write(fd, ascii_pid, 11);
1584 * unlock - remove our lockfile