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 1.16 1997/04/30 05:59:25 paulus Exp $";
42 #include <sys/termiox.h>
46 #include <sys/types.h>
47 #include <sys/ioccom.h>
48 #include <sys/stream.h>
49 #include <sys/stropts.h>
50 #include <sys/socket.h>
51 #include <sys/sockio.h>
52 #include <sys/syslog.h>
53 #include <sys/sysmacros.h>
54 #include <sys/systeminfo.h>
57 #include <sys/mkdev.h>
59 #include <net/if_arp.h>
60 #include <net/route.h>
61 #include <net/ppp_defs.h>
62 #include <net/pppio.h>
63 #include <netinet/in.h>
68 static int fdmuxid = -1;
70 static int ipmuxid = -1;
72 static int restore_term;
73 static struct termios inittermios;
75 static struct termiox inittermiox;
76 static int termiox_ok;
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));
105 * sys_init - System-dependent initialization.
114 union DL_primitives prim;
119 ipfd = open("/dev/ip", O_RDWR, 0);
121 syslog(LOG_ERR, "Couldn't open IP device: %m");
126 tty_sid = getsid((pid_t)0);
128 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
130 syslog(LOG_ERR, "Can't open /dev/ppp: %m");
133 if (kdebugflag & 1) {
134 x = PPPDBG_LOG + PPPDBG_DRIVER;
135 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
138 /* Assign a new PPA and get its unit number. */
139 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0) {
140 syslog(LOG_ERR, "Can't create new PPP interface: %m");
145 * Open the ppp device again and link it under the ip multiplexor.
146 * IP will assign a unit number which hopefully is the same as ifunit.
147 * I don't know any way to be certain they will be the same. :-(
149 ifd = open("/dev/ppp", O_RDWR, 0);
151 syslog(LOG_ERR, "Can't open /dev/ppp (2): %m");
154 if (kdebugflag & 1) {
155 x = PPPDBG_LOG + PPPDBG_DRIVER;
156 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
159 if (ioctl(ifd, I_PUSH, "ip") < 0) {
160 syslog(LOG_ERR, "Can't push IP module: %m");
165 if (dlpi_attach(ifd, ifunit) < 0 ||
166 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
167 syslog(LOG_ERR, "Can't attach to ppp%d: %m", ifunit);
172 ipmuxid = ioctl(ipfd, I_LINK, ifd);
175 syslog(LOG_ERR, "Can't link PPP device to IP: %m");
180 /* Set the interface name for the link. */
181 (void) sprintf (ifr.ifr_name, "ppp%d", ifunit);
182 ifr.ifr_metric = ipmuxid;
183 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0) {
184 syslog(LOG_ERR, "Can't set interface name %s: %m", ifr.ifr_name);
191 * sys_cleanup - restore any system state we modified before exiting:
192 * mark the interface down, delete default route and/or proxy arp entry.
193 * This should call die() because it's called from die().
202 if (default_route_gateway)
203 cifdefaultroute(0, default_route_gateway, default_route_gateway);
205 cifproxyarp(0, proxy_arp_addr);
209 * sys_close - Clean up in a child process before execing.
220 * sys_check_options - check the options that the user specified
229 * daemon - Detach us from controlling terminal session.
232 daemon(nochdir, noclose)
233 int nochdir, noclose;
237 if ((pid = fork()) < 0)
240 exit(0); /* parent dies */
245 fclose(stdin); /* don't need stdin, stdout, stderr */
253 * ppp_available - check whether the system has any ppp interfaces
260 return stat("/dev/ppp", &buf) >= 0;
264 * establish_ppp - Turn the serial port into a ppp interface.
272 /* Pop any existing modules off the tty stream. */
274 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
275 || ioctl(fd, I_POP, 0) < 0)
279 /* Push the async hdlc module and the compressor module. */
280 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
281 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
284 if (kdebugflag & 4) {
285 i = PPPDBG_LOG + PPPDBG_AHDLC;
286 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
288 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
289 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
292 if (kdebugflag & 2) {
293 i = PPPDBG_LOG + PPPDBG_COMP;
294 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
297 /* Link the serial port under the PPP multiplexor. */
298 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
299 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
305 * restore_loop - reattach the ppp unit to the loopback.
306 * This doesn't need to do anything because disestablish_ppp does it.
314 * disestablish_ppp - Restore the serial port to normal operation.
315 * It attempts to reconstruct the stream with the previously popped
316 * modules. This shouldn't call die() because it's called from die().
325 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
327 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
332 while (ioctl(fd, I_POP, 0) >= 0)
334 for (i = tty_nmodules - 1; i >= 0; --i)
335 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
336 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
339 if (hungup && default_device && tty_sid > 0) {
341 * If we have received a hangup, we need to send a SIGHUP
342 * to the terminal's controlling process. The reason is
343 * that the original stream head for the terminal hasn't
344 * seen the M_HANGUP message (it went up through the ppp
345 * driver to the stream head for our fd to /dev/ppp).
347 kill(tty_sid, SIGHUP);
353 * Check whether the link seems not to be 8-bit clean.
361 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
366 s = "bit 7 set to 1";
369 s = "bit 7 set to 0";
379 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
380 syslog(LOG_WARNING, "All received characters had %s", s);
385 * List of valid speeds.
388 int speed_int, speed_val;
460 * Translate from bits/second to a speed_t.
466 struct speed *speedp;
470 for (speedp = speeds; speedp->speed_int; speedp++)
471 if (bps == speedp->speed_int)
472 return speedp->speed_val;
473 syslog(LOG_WARNING, "speed %d not supported", bps);
478 * Translate from a speed_t to bits/second.
484 struct speed *speedp;
488 for (speedp = speeds; speedp->speed_int; speedp++)
489 if (speed == speedp->speed_val)
490 return speedp->speed_int;
495 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
496 * at the requested speed, etc. If `local' is true, set CLOCAL
497 * regardless of whether the modem option was specified.
500 set_up_tty(fd, local)
505 #if !defined (CRTSCTS)
509 if (tcgetattr(fd, &tios) < 0) {
510 syslog(LOG_ERR, "tcgetattr: %m");
516 if (ioctl (fd, TCGETX, &tiox) < 0) {
519 syslog (LOG_ERR, "TCGETX: %m");
528 ioctl(fd, TIOCGWINSZ, &wsinfo);
531 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
534 tios.c_cflag |= CRTSCTS;
535 else if (crtscts < 0)
536 tios.c_cflag &= ~CRTSCTS;
538 if (crtscts != 0 && !termiox_ok) {
539 syslog(LOG_ERR, "Can't set RTS/CTS flow control");
540 } else if (crtscts > 0) {
541 tiox.x_hflag |= RTSXOFF|CTSXON;
542 } else if (crtscts < 0) {
543 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
547 tios.c_cflag |= CS8 | CREAD | HUPCL;
549 tios.c_cflag |= CLOCAL;
550 tios.c_iflag = IGNBRK | IGNPAR;
554 tios.c_cc[VTIME] = 0;
557 tios.c_iflag |= IXON | IXOFF;
558 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
559 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
562 speed = translate_speed(inspeed);
564 cfsetospeed(&tios, speed);
565 cfsetispeed(&tios, speed);
567 speed = cfgetospeed(&tios);
569 * We can't proceed if the serial port speed is 0,
570 * since that implies that the serial port is disabled.
573 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
579 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
580 syslog(LOG_ERR, "tcsetattr: %m");
585 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
586 syslog (LOG_ERR, "TCSETXF: %m");
590 baud_rate = inspeed = baud_rate_of(speed);
595 * restore_tty - restore the terminal to the saved settings.
602 if (!default_device) {
604 * Turn off echoing, because otherwise we can get into
605 * a loop with the tty and the modem echoing to each other.
606 * We presume we are the sole user of this tty device, so
607 * when we close it, it will revert to its defaults anyway.
609 inittermios.c_lflag &= ~(ECHO | ECHONL);
611 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
612 if (!hungup && errno != ENXIO)
613 syslog(LOG_WARNING, "tcsetattr: %m");
615 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
616 if (!hungup && errno != ENXIO)
617 syslog (LOG_ERR, "TCSETXF: %m");
620 ioctl(fd, TIOCSWINSZ, &wsinfo);
626 * setdtr - control the DTR line on the serial port.
627 * This is called from die(), so it shouldn't call die().
633 int modembits = TIOCM_DTR;
635 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
639 * open_loopback - open the device we use for getting packets
640 * in demand mode. Under Solaris 2, we use our existing fd
649 * output - Output PPP packet.
662 log_packet(p, len, "sent ", LOG_DEBUG);
665 data.buf = (caddr_t) p;
667 while (putmsg(pppfd, NULL, &data, 0) < 0) {
668 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
670 syslog(LOG_ERR, "Couldn't send packet: %m");
674 pfd.events = POLLOUT;
675 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
681 * wait_input - wait until there is data available on fd,
682 * for the length of time specified by *timo (indefinite
687 struct timeval *timo;
692 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
694 pfd.events = POLLIN | POLLPRI | POLLHUP;
695 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
696 syslog(LOG_ERR, "poll: %m");
702 * wait_loop_output - wait until there is data available on the
703 * loopback, for the length of time specified by *timo (indefinite
707 wait_loop_output(timo)
708 struct timeval *timo;
714 * wait_time - wait for a given length of time or until a
715 * signal is received.
719 struct timeval *timo;
723 n = select(0, NULL, NULL, NULL, timo);
724 if (n < 0 && errno != EINTR) {
725 syslog(LOG_ERR, "select: %m");
732 * read_packet - get a PPP packet from the serial device.
738 struct strbuf ctrl, data;
740 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
743 data.maxlen = PPP_MRU + PPP_HDRLEN;
744 data.buf = (caddr_t) buf;
745 ctrl.maxlen = sizeof(ctrlbuf);
746 ctrl.buf = (caddr_t) ctrlbuf;
748 len = getmsg(pppfd, &ctrl, &data, &flags);
750 if (errno = EAGAIN || errno == EINTR)
752 syslog(LOG_ERR, "Error reading packet: %m");
760 * Got a M_PROTO or M_PCPROTO message. Interpret it
761 * as a DLPI primitive??
764 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
765 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
771 * get_loop_output - get outgoing packets from the ppp device,
772 * and detect when we want to bring the real link up.
773 * Return value is 1 if we need to bring up the link, 0 otherwise.
781 while ((len = read_packet(inpacket_buf)) > 0) {
782 if (loop_frame(inpacket_buf, len))
789 * ppp_send_config - configure the transmit characteristics of
793 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
802 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
803 if (hungup && errno == ENXIO)
805 syslog(LOG_ERR, "Couldn't set MTU: %m");
808 /* can't set these if we don't have a stream attached below /dev/ppp */
809 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
810 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
812 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
813 cf[1] = COMP_PROT | COMP_AC;
814 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
815 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
819 /* set the MTU for IP as well */
820 memset(&ifr, 0, sizeof(ifr));
821 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
822 ifr.ifr_metric = link_mtu;
823 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
824 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
829 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
832 ppp_set_xaccm(unit, accm)
837 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
838 if (!hungup || errno != ENXIO)
839 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
844 * ppp_recv_config - configure the receive-side characteristics of
848 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
856 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
857 if (hungup && errno == ENXIO)
859 syslog(LOG_ERR, "Couldn't set MRU: %m");
862 /* can't set these if we don't have a stream attached below /dev/ppp */
863 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
864 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
866 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
867 cf[1] = DECOMP_PROT | DECOMP_AC;
868 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
869 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
875 * ccp_test - ask kernel whether a given compression method
876 * is acceptable for use.
879 ccp_test(unit, opt_ptr, opt_len, for_transmit)
880 int unit, opt_len, for_transmit;
883 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
884 opt_ptr, opt_len, 0) >= 0)
886 return (errno == ENOSR)? 0: -1;
890 * ccp_flags_set - inform kernel about the current state of CCP.
893 ccp_flags_set(unit, isopen, isup)
894 int unit, isopen, isup;
898 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
899 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
900 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
901 if (!hungup || errno != ENXIO)
902 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
907 * get_idle_time - return how long the link has been idle.
914 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
919 * set_filters - transfer the pass and active filters to the kernel.
922 set_filters(pass, active)
923 struct bpf_program *pass, *active;
927 if (pass->bf_len > 0) {
928 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
929 sizeof(struct bpf_program), 0) < 0) {
930 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
934 if (active->bf_len > 0) {
935 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
936 sizeof(struct bpf_program), 0) < 0) {
937 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
946 * ccp_fatal_error - returns 1 if decompression was disabled as a
947 * result of an error detected after decompression of a packet,
948 * 0 otherwise. This is necessary because of patent nonsense.
951 ccp_fatal_error(unit)
957 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
958 if (errno != ENXIO && errno != EINVAL)
959 syslog(LOG_ERR, "Couldn't get compression flags: %m");
962 return cf[0] & CCP_FATALERROR;
966 * sifvjcomp - config tcp header compression
969 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
970 int u, vjcomp, xcidcomp, xmaxcid;
976 maxcid[0] = xcidcomp;
977 maxcid[1] = 15; /* XXX should be rmaxcid */
978 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
979 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
983 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
984 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
985 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
986 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
988 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
995 * sifup - Config the interface up and enable IP packets to pass.
1003 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1004 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1005 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
1008 ifr.ifr_flags |= IFF_UP;
1009 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1010 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
1018 * sifdown - Config the interface down and disable IP.
1028 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1029 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1030 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
1033 ifr.ifr_flags &= ~IFF_UP;
1034 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1035 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1043 * sifnpmode - Set the mode for handling packets for a given NP.
1046 sifnpmode(u, proto, mode)
1054 npi[1] = (int) mode;
1055 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1056 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1062 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1065 * sifaddr - Config the interface IP addresses and netmask.
1075 memset(&ifr, 0, sizeof(ifr));
1076 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1077 ifr.ifr_addr.sa_family = AF_INET;
1078 INET_ADDR(ifr.ifr_addr) = m;
1079 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1080 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1083 ifr.ifr_addr.sa_family = AF_INET;
1084 INET_ADDR(ifr.ifr_addr) = o;
1085 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1086 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1091 * On some systems, we have to explicitly set the point-to-point
1092 * flag bit before we can set a destination address.
1094 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1095 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1096 ifr.ifr_flags |= IFF_POINTOPOINT;
1097 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1098 syslog(LOG_ERR, "Couldn't mark interface pt-to-pt: %m");
1102 ifr.ifr_dstaddr.sa_family = AF_INET;
1103 INET_ADDR(ifr.ifr_dstaddr) = h;
1104 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1105 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1108 #if 0 /* now done in ppp_send_config */
1109 ifr.ifr_metric = link_mtu;
1110 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1111 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1119 * cifaddr - Clear the interface IP addresses, and delete routes
1120 * through the interface if possible.
1127 #if defined(__USLC__) /* was: #if 0 */
1128 cifroute(unit, ouraddr, hisaddr);
1130 syslog(LOG_NOTICE, "Removing ppp interface unit");
1131 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1132 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1142 * sifdefaultroute - assign a default route through the address given.
1145 sifdefaultroute(u, l, g)
1151 #if defined(__USLC__)
1152 g = l; /* use the local address as gateway */
1154 memset(&rt, 0, sizeof(rt));
1155 rt.rt_dst.sa_family = AF_INET;
1156 INET_ADDR(rt.rt_dst) = 0;
1157 rt.rt_gateway.sa_family = AF_INET;
1158 INET_ADDR(rt.rt_gateway) = g;
1159 rt.rt_flags = RTF_GATEWAY;
1161 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1162 syslog(LOG_ERR, "Can't add default route: %m");
1166 default_route_gateway = g;
1171 * cifdefaultroute - delete a default route through the address given.
1174 cifdefaultroute(u, l, g)
1180 #if defined(__USLC__)
1181 g = l; /* use the local address as gateway */
1183 memset(&rt, 0, sizeof(rt));
1184 rt.rt_dst.sa_family = AF_INET;
1185 INET_ADDR(rt.rt_dst) = 0;
1186 rt.rt_gateway.sa_family = AF_INET;
1187 INET_ADDR(rt.rt_gateway) = g;
1188 rt.rt_flags = RTF_GATEWAY;
1190 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1191 syslog(LOG_ERR, "Can't delete default route: %m");
1195 default_route_gateway = 0;
1200 * sifproxyarp - Make a proxy ARP entry for the peer.
1203 sifproxyarp(unit, hisaddr)
1207 struct arpreq arpreq;
1209 memset(&arpreq, 0, sizeof(arpreq));
1210 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1213 arpreq.arp_pa.sa_family = AF_INET;
1214 INET_ADDR(arpreq.arp_pa) = hisaddr;
1215 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1216 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1217 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1221 proxy_arp_addr = hisaddr;
1226 * cifproxyarp - Delete the proxy ARP entry for the peer.
1229 cifproxyarp(unit, hisaddr)
1233 struct arpreq arpreq;
1235 memset(&arpreq, 0, sizeof(arpreq));
1236 arpreq.arp_pa.sa_family = AF_INET;
1237 INET_ADDR(arpreq.arp_pa) = hisaddr;
1238 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1239 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1248 * get_ether_addr - get the hardware address of an interface on the
1249 * the same subnet as ipaddr.
1254 get_ether_addr(ipaddr, hwaddr)
1256 struct sockaddr *hwaddr;
1258 struct ifreq *ifr, *ifend, ifreq;
1261 u_int32_t ina, mask;
1264 * Scan through the system's network interfaces.
1267 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1270 ifc.ifc_len = nif * sizeof(struct ifreq);
1271 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1272 if (ifc.ifc_buf == 0)
1274 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1275 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1279 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1280 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1281 if (ifr->ifr_addr.sa_family != AF_INET)
1284 * Check that the interface is up, and not point-to-point or loopback.
1286 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1287 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1289 if ((ifreq.ifr_flags &
1290 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1291 != (IFF_UP|IFF_BROADCAST))
1294 * Get its netmask and check that it's on the right subnet.
1296 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1298 ina = INET_ADDR(ifr->ifr_addr);
1299 mask = INET_ADDR(ifreq.ifr_addr);
1300 if ((ipaddr & mask) == (ina & mask))
1305 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1310 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1311 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1312 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1322 * get_hw_addr - obtain the hardware address for a named interface.
1325 get_hw_addr(name, hwaddr)
1327 struct sockaddr *hwaddr;
1330 int unit, iffd, adrlen;
1331 unsigned char *adrp;
1334 union DL_primitives prim;
1339 * We have to open the device and ask it for its hardware address.
1340 * First split apart the device name and unit.
1342 strcpy(ifdev, "/dev/");
1343 q = ifdev + 5; /* strlen("/dev/") */
1344 while (*name != 0 && !isdigit(*name))
1350 * Open the device and do a DLPI attach and phys_addr_req.
1352 iffd = open(ifdev, O_RDWR);
1354 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1357 if (dlpi_attach(iffd, unit) < 0
1358 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1359 || dlpi_info_req(iffd) < 0
1360 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1365 adrlen = reply.prim.info_ack.dl_addr_length;
1366 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1367 #if DL_CURRENT_VERSION >= 2
1368 if (reply.prim.info_ack.dl_sap_length < 0)
1369 adrlen += reply.prim.info_ack.dl_sap_length;
1371 adrp += reply.prim.info_ack.dl_sap_length;
1373 hwaddr->sa_family = AF_UNSPEC;
1374 memcpy(hwaddr->sa_data, adrp, adrlen);
1380 dlpi_attach(fd, ppa)
1383 dl_attach_req_t req;
1386 req.dl_primitive = DL_ATTACH_REQ;
1388 buf.len = sizeof(req);
1389 buf.buf = (void *) &req;
1390 return putmsg(fd, &buf, NULL, RS_HIPRI);
1400 req.dl_primitive = DL_INFO_REQ;
1401 buf.len = sizeof(req);
1402 buf.buf = (void *) &req;
1403 return putmsg(fd, &buf, NULL, RS_HIPRI);
1407 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1408 union DL_primitives *reply;
1409 int fd, expected_prim, maxlen;
1416 * Use poll to wait for a message with a timeout.
1419 pfd.events = POLLIN | POLLPRI;
1421 n = poll(&pfd, 1, 1000);
1422 } while (n == -1 && errno == EINTR);
1429 buf.maxlen = maxlen;
1430 buf.buf = (void *) reply;
1432 if (getmsg(fd, &buf, NULL, &flags) < 0)
1435 if (buf.len < sizeof(ulong)) {
1437 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1441 if (reply->dl_primitive == expected_prim)
1445 if (reply->dl_primitive == DL_ERROR_ACK) {
1446 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1447 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1448 reply->error_ack.dl_error_primitive);
1450 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1451 reply->dl_primitive);
1459 * Return user specified netmask, modified by any mask we might determine
1460 * for address `addr' (in network byte order).
1461 * Here we scan through the system's list of interfaces, looking for
1462 * any non-point-to-point interfaces which might appear to be on the same
1463 * network as `addr'. If we find any, we OR in their netmask to the
1464 * user-specified netmask.
1470 u_int32_t mask, nmask, ina;
1471 struct ifreq *ifr, *ifend, ifreq;
1476 if (IN_CLASSA(addr)) /* determine network mask for address class */
1477 nmask = IN_CLASSA_NET;
1478 else if (IN_CLASSB(addr))
1479 nmask = IN_CLASSB_NET;
1481 nmask = IN_CLASSC_NET;
1482 /* class D nets are disallowed by bad_ip_adrs */
1483 mask = netmask | htonl(nmask);
1486 * Scan through the system's network interfaces.
1489 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1492 ifc.ifc_len = nif * sizeof(struct ifreq);
1493 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1494 if (ifc.ifc_buf == 0)
1496 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1497 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1501 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1502 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1504 * Check the interface's internet address.
1506 if (ifr->ifr_addr.sa_family != AF_INET)
1508 ina = INET_ADDR(ifr->ifr_addr);
1509 if ((ntohl(ina) & nmask) != (addr & nmask))
1512 * Check that the interface is up, and not point-to-point or loopback.
1514 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1515 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1517 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1521 * Get its netmask and OR it into our mask.
1523 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1525 mask |= INET_ADDR(ifreq.ifr_addr);
1533 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1536 logwtmp(line, name, host)
1537 const char *line, *name, *host;
1539 static struct utmpx utmpx;
1543 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1544 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1545 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1546 utmpx.ut_pid = getpid();
1547 utmpx.ut_type = USER_PROCESS;
1549 utmpx.ut_type = DEAD_PROCESS;
1551 gettimeofday(&utmpx.ut_tv, NULL);
1552 updwtmpx("/var/adm/wtmpx", &utmpx);
1556 * gethostid - return the serial number of this machine.
1563 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1564 syslog(LOG_ERR, "sysinfo: %m");
1567 return (int) strtoul(buf, NULL, 16);
1571 strioctl(fd, cmd, ptr, ilen, olen)
1572 int fd, cmd, ilen, olen;
1575 struct strioctl str;
1581 if (ioctl(fd, I_STR, &str) == -1)
1583 if (str.ic_len != olen)
1584 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1585 olen, str.ic_len, cmd);
1590 * lock - create a lock file for the named lock device
1593 #define LOCK_PREFIX "/var/spool/locks/LK."
1594 static char lock_file[40]; /* name of lock file created */
1604 if (stat(dev, &sbuf) < 0) {
1605 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1608 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1609 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1612 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1613 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1615 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1617 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1618 /* Read the lock file to find out who has the device locked */
1619 n = read(fd, ascii_pid, 11);
1621 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1625 pid = atoi(ascii_pid);
1626 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1627 /* pid no longer exists - remove the lock file */
1628 if (unlink(lock_file) == 0) {
1630 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1634 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1637 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1642 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1647 sprintf(ascii_pid, "%10d\n", getpid());
1648 write(fd, ascii_pid, 11);
1655 * unlock - remove our lockfile
1668 * cifroute - delete a route through the addresses given.
1671 cifroute(u, our, his)
1677 memset(&rt, 0, sizeof(rt));
1678 rt.rt_dst.sa_family = AF_INET;
1679 INET_ADDR(rt.rt_dst) = his;
1680 rt.rt_gateway.sa_family = AF_INET;
1681 INET_ADDR(rt.rt_gateway) = our;
1682 rt.rt_flags = RTF_HOST;
1684 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1685 syslog(LOG_ERR, "Can't delete route: %m");