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 1.18 1998/11/07 06:59:31 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
230 * daemon - Detach us from controlling terminal session.
233 daemon(nochdir, noclose)
234 int nochdir, noclose;
238 if ((pid = fork()) < 0)
241 exit(0); /* parent dies */
246 fclose(stdin); /* don't need stdin, stdout, stderr */
254 * ppp_available - check whether the system has any ppp interfaces
261 return stat("/dev/ppp", &buf) >= 0;
265 * establish_ppp - Turn the serial port into a ppp interface.
273 /* Pop any existing modules off the tty stream. */
275 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
276 || ioctl(fd, I_POP, 0) < 0)
280 /* Push the async hdlc module and the compressor module. */
281 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
282 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
285 if (kdebugflag & 4) {
286 i = PPPDBG_LOG + PPPDBG_AHDLC;
287 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
289 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
290 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
293 if (kdebugflag & 2) {
294 i = PPPDBG_LOG + PPPDBG_COMP;
295 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
298 /* Link the serial port under the PPP multiplexor. */
299 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
300 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
306 * restore_loop - reattach the ppp unit to the loopback.
307 * This doesn't need to do anything because disestablish_ppp does it.
315 * disestablish_ppp - Restore the serial port to normal operation.
316 * It attempts to reconstruct the stream with the previously popped
317 * modules. This shouldn't call die() because it's called from die().
326 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
328 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
333 while (ioctl(fd, I_POP, 0) >= 0)
335 for (i = tty_nmodules - 1; i >= 0; --i)
336 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
337 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
340 if (hungup && default_device && tty_sid > 0) {
342 * If we have received a hangup, we need to send a SIGHUP
343 * to the terminal's controlling process. The reason is
344 * that the original stream head for the terminal hasn't
345 * seen the M_HANGUP message (it went up through the ppp
346 * driver to the stream head for our fd to /dev/ppp).
348 kill(tty_sid, SIGHUP);
354 * Check whether the link seems not to be 8-bit clean.
362 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
367 s = "bit 7 set to 1";
370 s = "bit 7 set to 0";
380 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
381 syslog(LOG_WARNING, "All received characters had %s", s);
386 * List of valid speeds.
389 int speed_int, speed_val;
461 * Translate from bits/second to a speed_t.
467 struct speed *speedp;
471 for (speedp = speeds; speedp->speed_int; speedp++)
472 if (bps == speedp->speed_int)
473 return speedp->speed_val;
474 syslog(LOG_WARNING, "speed %d not supported", bps);
479 * Translate from a speed_t to bits/second.
485 struct speed *speedp;
489 for (speedp = speeds; speedp->speed_int; speedp++)
490 if (speed == speedp->speed_val)
491 return speedp->speed_int;
496 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
497 * at the requested speed, etc. If `local' is true, set CLOCAL
498 * regardless of whether the modem option was specified.
501 set_up_tty(fd, local)
506 #if !defined (CRTSCTS)
510 if (tcgetattr(fd, &tios) < 0) {
511 syslog(LOG_ERR, "tcgetattr: %m");
517 if (ioctl (fd, TCGETX, &tiox) < 0) {
520 syslog (LOG_ERR, "TCGETX: %m");
529 ioctl(fd, TIOCGWINSZ, &wsinfo);
532 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
535 tios.c_cflag |= CRTSCTS;
536 else if (crtscts < 0)
537 tios.c_cflag &= ~CRTSCTS;
539 if (crtscts != 0 && !termiox_ok) {
540 syslog(LOG_ERR, "Can't set RTS/CTS flow control");
541 } else if (crtscts > 0) {
542 tiox.x_hflag |= RTSXOFF|CTSXON;
543 } else if (crtscts < 0) {
544 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
548 tios.c_cflag |= CS8 | CREAD | HUPCL;
550 tios.c_cflag |= CLOCAL;
551 tios.c_iflag = IGNBRK | IGNPAR;
555 tios.c_cc[VTIME] = 0;
558 tios.c_iflag |= IXON | IXOFF;
559 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
560 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
563 speed = translate_speed(inspeed);
565 cfsetospeed(&tios, speed);
566 cfsetispeed(&tios, speed);
568 speed = cfgetospeed(&tios);
570 * We can't proceed if the serial port speed is 0,
571 * since that implies that the serial port is disabled.
574 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
580 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
581 syslog(LOG_ERR, "tcsetattr: %m");
586 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
587 syslog (LOG_ERR, "TCSETXF: %m");
591 baud_rate = inspeed = baud_rate_of(speed);
596 * restore_tty - restore the terminal to the saved settings.
603 if (!default_device) {
605 * Turn off echoing, because otherwise we can get into
606 * a loop with the tty and the modem echoing to each other.
607 * We presume we are the sole user of this tty device, so
608 * when we close it, it will revert to its defaults anyway.
610 inittermios.c_lflag &= ~(ECHO | ECHONL);
612 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
613 if (!hungup && errno != ENXIO)
614 syslog(LOG_WARNING, "tcsetattr: %m");
616 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
617 if (!hungup && errno != ENXIO)
618 syslog (LOG_ERR, "TCSETXF: %m");
621 ioctl(fd, TIOCSWINSZ, &wsinfo);
627 * setdtr - control the DTR line on the serial port.
628 * This is called from die(), so it shouldn't call die().
634 int modembits = TIOCM_DTR;
636 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
640 * open_loopback - open the device we use for getting packets
641 * in demand mode. Under Solaris 2, we use our existing fd
650 * output - Output PPP packet.
663 log_packet(p, len, "sent ", LOG_DEBUG);
666 data.buf = (caddr_t) p;
668 while (putmsg(pppfd, NULL, &data, 0) < 0) {
669 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
671 syslog(LOG_ERR, "Couldn't send packet: %m");
675 pfd.events = POLLOUT;
676 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
682 * wait_input - wait until there is data available on fd,
683 * for the length of time specified by *timo (indefinite
688 struct timeval *timo;
693 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
695 pfd.events = POLLIN | POLLPRI | POLLHUP;
696 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
697 syslog(LOG_ERR, "poll: %m");
703 * wait_loop_output - wait until there is data available on the
704 * loopback, for the length of time specified by *timo (indefinite
708 wait_loop_output(timo)
709 struct timeval *timo;
715 * wait_time - wait for a given length of time or until a
716 * signal is received.
720 struct timeval *timo;
724 n = select(0, NULL, NULL, NULL, timo);
725 if (n < 0 && errno != EINTR) {
726 syslog(LOG_ERR, "select: %m");
733 * read_packet - get a PPP packet from the serial device.
739 struct strbuf ctrl, data;
741 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
744 data.maxlen = PPP_MRU + PPP_HDRLEN;
745 data.buf = (caddr_t) buf;
746 ctrl.maxlen = sizeof(ctrlbuf);
747 ctrl.buf = (caddr_t) ctrlbuf;
749 len = getmsg(pppfd, &ctrl, &data, &flags);
751 if (errno = EAGAIN || errno == EINTR)
753 syslog(LOG_ERR, "Error reading packet: %m");
761 * Got a M_PROTO or M_PCPROTO message. Interpret it
762 * as a DLPI primitive??
765 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
766 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
772 * get_loop_output - get outgoing packets from the ppp device,
773 * and detect when we want to bring the real link up.
774 * Return value is 1 if we need to bring up the link, 0 otherwise.
782 while ((len = read_packet(inpacket_buf)) > 0) {
783 if (loop_frame(inpacket_buf, len))
790 * ppp_send_config - configure the transmit characteristics of
794 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
803 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
804 if (hungup && errno == ENXIO)
806 syslog(LOG_ERR, "Couldn't set MTU: %m");
809 /* can't set these if we don't have a stream attached below /dev/ppp */
810 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
811 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
813 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
814 cf[1] = COMP_PROT | COMP_AC;
815 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
816 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
820 /* set the MTU for IP as well */
821 memset(&ifr, 0, sizeof(ifr));
822 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
823 ifr.ifr_metric = link_mtu;
824 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
825 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
830 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
833 ppp_set_xaccm(unit, accm)
838 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
839 if (!hungup || errno != ENXIO)
840 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
845 * ppp_recv_config - configure the receive-side characteristics of
849 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
857 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
858 if (hungup && errno == ENXIO)
860 syslog(LOG_ERR, "Couldn't set MRU: %m");
863 /* can't set these if we don't have a stream attached below /dev/ppp */
864 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
865 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
867 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
868 cf[1] = DECOMP_PROT | DECOMP_AC;
869 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
870 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
876 * ccp_test - ask kernel whether a given compression method
877 * is acceptable for use.
880 ccp_test(unit, opt_ptr, opt_len, for_transmit)
881 int unit, opt_len, for_transmit;
884 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
885 opt_ptr, opt_len, 0) >= 0)
887 return (errno == ENOSR)? 0: -1;
891 * ccp_flags_set - inform kernel about the current state of CCP.
894 ccp_flags_set(unit, isopen, isup)
895 int unit, isopen, isup;
899 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
900 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
901 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
902 if (!hungup || errno != ENXIO)
903 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
908 * get_idle_time - return how long the link has been idle.
915 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
920 * set_filters - transfer the pass and active filters to the kernel.
923 set_filters(pass, active)
924 struct bpf_program *pass, *active;
928 if (pass->bf_len > 0) {
929 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
930 sizeof(struct bpf_program), 0) < 0) {
931 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
935 if (active->bf_len > 0) {
936 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
937 sizeof(struct bpf_program), 0) < 0) {
938 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
947 * ccp_fatal_error - returns 1 if decompression was disabled as a
948 * result of an error detected after decompression of a packet,
949 * 0 otherwise. This is necessary because of patent nonsense.
952 ccp_fatal_error(unit)
958 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
959 if (errno != ENXIO && errno != EINVAL)
960 syslog(LOG_ERR, "Couldn't get compression flags: %m");
963 return cf[0] & CCP_FATALERROR;
967 * sifvjcomp - config tcp header compression
970 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
971 int u, vjcomp, xcidcomp, xmaxcid;
977 maxcid[0] = xcidcomp;
978 maxcid[1] = 15; /* XXX should be rmaxcid */
979 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
980 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
984 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
985 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
986 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
987 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
989 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
996 * sifup - Config the interface up and enable IP packets to pass.
1004 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1005 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1006 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
1009 ifr.ifr_flags |= IFF_UP;
1010 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1011 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
1019 * sifdown - Config the interface down and disable IP.
1029 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1030 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1031 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
1034 ifr.ifr_flags &= ~IFF_UP;
1035 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1036 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1044 * sifnpmode - Set the mode for handling packets for a given NP.
1047 sifnpmode(u, proto, mode)
1055 npi[1] = (int) mode;
1056 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1057 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1063 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1066 * sifaddr - Config the interface IP addresses and netmask.
1076 memset(&ifr, 0, sizeof(ifr));
1077 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1078 ifr.ifr_addr.sa_family = AF_INET;
1079 INET_ADDR(ifr.ifr_addr) = m;
1080 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1081 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1084 ifr.ifr_addr.sa_family = AF_INET;
1085 INET_ADDR(ifr.ifr_addr) = o;
1086 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1087 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1092 * On some systems, we have to explicitly set the point-to-point
1093 * flag bit before we can set a destination address.
1095 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1096 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1097 ifr.ifr_flags |= IFF_POINTOPOINT;
1098 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1099 syslog(LOG_ERR, "Couldn't mark interface pt-to-pt: %m");
1103 ifr.ifr_dstaddr.sa_family = AF_INET;
1104 INET_ADDR(ifr.ifr_dstaddr) = h;
1105 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1106 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1109 #if 0 /* now done in ppp_send_config */
1110 ifr.ifr_metric = link_mtu;
1111 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1112 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1120 * cifaddr - Clear the interface IP addresses, and delete routes
1121 * through the interface if possible.
1128 #if defined(__USLC__) /* was: #if 0 */
1129 cifroute(unit, ouraddr, hisaddr);
1131 syslog(LOG_NOTICE, "Removing ppp interface unit");
1132 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1133 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1143 * sifdefaultroute - assign a default route through the address given.
1146 sifdefaultroute(u, l, g)
1152 #if defined(__USLC__)
1153 g = l; /* use the local address as gateway */
1155 memset(&rt, 0, sizeof(rt));
1156 rt.rt_dst.sa_family = AF_INET;
1157 INET_ADDR(rt.rt_dst) = 0;
1158 rt.rt_gateway.sa_family = AF_INET;
1159 INET_ADDR(rt.rt_gateway) = g;
1160 rt.rt_flags = RTF_GATEWAY;
1162 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1163 syslog(LOG_ERR, "Can't add default route: %m");
1167 default_route_gateway = g;
1172 * cifdefaultroute - delete a default route through the address given.
1175 cifdefaultroute(u, l, g)
1181 #if defined(__USLC__)
1182 g = l; /* use the local address as gateway */
1184 memset(&rt, 0, sizeof(rt));
1185 rt.rt_dst.sa_family = AF_INET;
1186 INET_ADDR(rt.rt_dst) = 0;
1187 rt.rt_gateway.sa_family = AF_INET;
1188 INET_ADDR(rt.rt_gateway) = g;
1189 rt.rt_flags = RTF_GATEWAY;
1191 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1192 syslog(LOG_ERR, "Can't delete default route: %m");
1196 default_route_gateway = 0;
1201 * sifproxyarp - Make a proxy ARP entry for the peer.
1204 sifproxyarp(unit, hisaddr)
1208 struct arpreq arpreq;
1210 memset(&arpreq, 0, sizeof(arpreq));
1211 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1214 arpreq.arp_pa.sa_family = AF_INET;
1215 INET_ADDR(arpreq.arp_pa) = hisaddr;
1216 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1217 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1218 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1222 proxy_arp_addr = hisaddr;
1227 * cifproxyarp - Delete the proxy ARP entry for the peer.
1230 cifproxyarp(unit, hisaddr)
1234 struct arpreq arpreq;
1236 memset(&arpreq, 0, sizeof(arpreq));
1237 arpreq.arp_pa.sa_family = AF_INET;
1238 INET_ADDR(arpreq.arp_pa) = hisaddr;
1239 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1240 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1249 * get_ether_addr - get the hardware address of an interface on the
1250 * the same subnet as ipaddr.
1255 get_ether_addr(ipaddr, hwaddr)
1257 struct sockaddr *hwaddr;
1259 struct ifreq *ifr, *ifend, ifreq;
1262 u_int32_t ina, mask;
1265 * Scan through the system's network interfaces.
1268 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1271 ifc.ifc_len = nif * sizeof(struct ifreq);
1272 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1273 if (ifc.ifc_buf == 0)
1275 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1276 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1280 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1281 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1282 if (ifr->ifr_addr.sa_family != AF_INET)
1285 * Check that the interface is up, and not point-to-point or loopback.
1287 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1288 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1290 if ((ifreq.ifr_flags &
1291 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1292 != (IFF_UP|IFF_BROADCAST))
1295 * Get its netmask and check that it's on the right subnet.
1297 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1299 ina = INET_ADDR(ifr->ifr_addr);
1300 mask = INET_ADDR(ifreq.ifr_addr);
1301 if ((ipaddr & mask) == (ina & mask))
1306 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1311 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1312 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1313 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1323 * get_hw_addr - obtain the hardware address for a named interface.
1326 get_hw_addr(name, hwaddr)
1328 struct sockaddr *hwaddr;
1331 int unit, iffd, adrlen;
1332 unsigned char *adrp;
1335 union DL_primitives prim;
1340 * We have to open the device and ask it for its hardware address.
1341 * First split apart the device name and unit.
1343 strcpy(ifdev, "/dev/");
1344 q = ifdev + 5; /* strlen("/dev/") */
1345 while (*name != 0 && !isdigit(*name))
1351 * Open the device and do a DLPI attach and phys_addr_req.
1353 iffd = open(ifdev, O_RDWR);
1355 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1358 if (dlpi_attach(iffd, unit) < 0
1359 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1360 || dlpi_info_req(iffd) < 0
1361 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1366 adrlen = reply.prim.info_ack.dl_addr_length;
1367 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1368 #if DL_CURRENT_VERSION >= 2
1369 if (reply.prim.info_ack.dl_sap_length < 0)
1370 adrlen += reply.prim.info_ack.dl_sap_length;
1372 adrp += reply.prim.info_ack.dl_sap_length;
1374 hwaddr->sa_family = AF_UNSPEC;
1375 memcpy(hwaddr->sa_data, adrp, adrlen);
1381 dlpi_attach(fd, ppa)
1384 dl_attach_req_t req;
1387 req.dl_primitive = DL_ATTACH_REQ;
1389 buf.len = sizeof(req);
1390 buf.buf = (void *) &req;
1391 return putmsg(fd, &buf, NULL, RS_HIPRI);
1401 req.dl_primitive = DL_INFO_REQ;
1402 buf.len = sizeof(req);
1403 buf.buf = (void *) &req;
1404 return putmsg(fd, &buf, NULL, RS_HIPRI);
1408 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1409 union DL_primitives *reply;
1410 int fd, expected_prim, maxlen;
1417 * Use poll to wait for a message with a timeout.
1420 pfd.events = POLLIN | POLLPRI;
1422 n = poll(&pfd, 1, 1000);
1423 } while (n == -1 && errno == EINTR);
1430 buf.maxlen = maxlen;
1431 buf.buf = (void *) reply;
1433 if (getmsg(fd, &buf, NULL, &flags) < 0)
1436 if (buf.len < sizeof(ulong)) {
1438 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1442 if (reply->dl_primitive == expected_prim)
1446 if (reply->dl_primitive == DL_ERROR_ACK) {
1447 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1448 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1449 reply->error_ack.dl_error_primitive);
1451 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1452 reply->dl_primitive);
1460 * Return user specified netmask, modified by any mask we might determine
1461 * for address `addr' (in network byte order).
1462 * Here we scan through the system's list of interfaces, looking for
1463 * any non-point-to-point interfaces which might appear to be on the same
1464 * network as `addr'. If we find any, we OR in their netmask to the
1465 * user-specified netmask.
1471 u_int32_t mask, nmask, ina;
1472 struct ifreq *ifr, *ifend, ifreq;
1477 if (IN_CLASSA(addr)) /* determine network mask for address class */
1478 nmask = IN_CLASSA_NET;
1479 else if (IN_CLASSB(addr))
1480 nmask = IN_CLASSB_NET;
1482 nmask = IN_CLASSC_NET;
1483 /* class D nets are disallowed by bad_ip_adrs */
1484 mask = netmask | htonl(nmask);
1487 * Scan through the system's network interfaces.
1490 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1493 ifc.ifc_len = nif * sizeof(struct ifreq);
1494 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1495 if (ifc.ifc_buf == 0)
1497 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1498 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1502 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1503 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1505 * Check the interface's internet address.
1507 if (ifr->ifr_addr.sa_family != AF_INET)
1509 ina = INET_ADDR(ifr->ifr_addr);
1510 if ((ntohl(ina) & nmask) != (addr & nmask))
1513 * Check that the interface is up, and not point-to-point or loopback.
1515 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1516 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1518 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1522 * Get its netmask and OR it into our mask.
1524 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1526 mask |= INET_ADDR(ifreq.ifr_addr);
1534 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1537 logwtmp(line, name, host)
1538 const char *line, *name, *host;
1540 static struct utmpx utmpx;
1544 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1545 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1546 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1547 utmpx.ut_pid = getpid();
1548 utmpx.ut_type = USER_PROCESS;
1550 utmpx.ut_type = DEAD_PROCESS;
1552 gettimeofday(&utmpx.ut_tv, NULL);
1553 updwtmpx("/var/adm/wtmpx", &utmpx);
1557 * get_host_seed - return the serial number of this machine.
1564 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1565 syslog(LOG_ERR, "sysinfo: %m");
1568 return (int) strtoul(buf, NULL, 16);
1572 strioctl(fd, cmd, ptr, ilen, olen)
1573 int fd, cmd, ilen, olen;
1576 struct strioctl str;
1582 if (ioctl(fd, I_STR, &str) == -1)
1584 if (str.ic_len != olen)
1585 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1586 olen, str.ic_len, cmd);
1591 * lock - create a lock file for the named lock device
1594 #define LOCK_PREFIX "/var/spool/locks/LK."
1595 static char lock_file[40]; /* name of lock file created */
1605 if (stat(dev, &sbuf) < 0) {
1606 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1609 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1610 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1613 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1614 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1616 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1618 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1619 /* Read the lock file to find out who has the device locked */
1620 n = read(fd, ascii_pid, 11);
1622 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1626 pid = atoi(ascii_pid);
1627 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1628 /* pid no longer exists - remove the lock file */
1629 if (unlink(lock_file) == 0) {
1631 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1635 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1638 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1643 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1648 sprintf(ascii_pid, "%10d\n", getpid());
1649 write(fd, ascii_pid, 11);
1656 * unlock - remove our lockfile
1669 * cifroute - delete a route through the addresses given.
1672 cifroute(u, our, his)
1678 memset(&rt, 0, sizeof(rt));
1679 rt.rt_dst.sa_family = AF_INET;
1680 INET_ADDR(rt.rt_dst) = his;
1681 rt.rt_gateway.sa_family = AF_INET;
1682 INET_ADDR(rt.rt_gateway) = our;
1683 rt.rt_flags = RTF_HOST;
1685 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1686 syslog(LOG_ERR, "Can't delete route: %m");