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 1.15 1997/03/04 03:43:54 paulus Exp $";
36 #if defined(SNI) || defined(__USLC__)
37 extern void *alloca(size_t);
47 #include <sys/termiox.h>
51 #include <sys/types.h>
52 #include <sys/ioccom.h>
53 #include <sys/stream.h>
54 #include <sys/stropts.h>
55 #include <sys/socket.h>
56 #include <sys/sockio.h>
57 #include <sys/syslog.h>
58 #include <sys/sysmacros.h>
59 #include <sys/systeminfo.h>
62 #include <sys/mkdev.h>
64 #include <net/if_arp.h>
65 #include <net/route.h>
66 #include <net/ppp_defs.h>
67 #include <net/pppio.h>
68 #include <netinet/in.h>
73 static int fdmuxid = -1;
75 static int ipmuxid = -1;
77 static int restore_term;
78 static struct termios inittermios;
80 static struct termiox inittermiox;
82 static struct winsize wsinfo; /* Initial window size info */
83 static pid_t tty_sid; /* original session ID for terminal */
85 extern u_char inpacket_buf[]; /* borrowed from main.c */
87 static int link_mtu, link_mru;
90 static int tty_nmodules;
91 static char tty_modules[NMODULES][FMNAMESZ+1];
93 static int if_is_up; /* Interface has been marked up */
94 static u_int32_t default_route_gateway; /* Gateway for default route added */
95 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
97 /* Prototypes for procedures local to this file. */
98 static int translate_speed __P((int));
99 static int baud_rate_of __P((int));
100 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
101 static int get_hw_addr __P((char *, struct sockaddr *));
102 static int dlpi_attach __P((int, int));
103 static int dlpi_info_req __P((int));
104 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
105 static int strioctl __P((int, int, void *, int, int));
109 * sys_init - System-dependent initialization.
118 union DL_primitives prim;
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");
137 if (kdebugflag & 1) {
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");
158 if (kdebugflag & 1) {
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, default_route_gateway);
209 cifproxyarp(0, proxy_arp_addr);
213 * sys_close - Clean up in a child process before execing.
224 * sys_check_options - check the options that the user specified
233 * daemon - Detach us from controlling terminal session.
236 daemon(nochdir, noclose)
237 int nochdir, noclose;
241 if ((pid = fork()) < 0)
244 exit(0); /* parent dies */
249 fclose(stdin); /* don't need stdin, stdout, stderr */
257 * ppp_available - check whether the system has any ppp interfaces
264 return stat("/dev/ppp", &buf) >= 0;
268 * establish_ppp - Turn the serial port into a ppp interface.
276 /* Pop any existing modules off the tty stream. */
278 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
279 || ioctl(fd, I_POP, 0) < 0)
283 /* Push the async hdlc module and the compressor module. */
284 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
285 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
288 if (kdebugflag & 4) {
289 i = PPPDBG_LOG + PPPDBG_AHDLC;
290 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
292 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
293 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
296 if (kdebugflag & 2) {
297 i = PPPDBG_LOG + PPPDBG_COMP;
298 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
301 /* Link the serial port under the PPP multiplexor. */
302 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
303 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
309 * restore_loop - reattach the ppp unit to the loopback.
310 * This doesn't need to do anything because disestablish_ppp does it.
318 * disestablish_ppp - Restore the serial port to normal operation.
319 * It attempts to reconstruct the stream with the previously popped
320 * modules. This shouldn't call die() because it's called from die().
329 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
331 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
336 while (ioctl(fd, I_POP, 0) >= 0)
338 for (i = tty_nmodules - 1; i >= 0; --i)
339 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
340 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
343 if (hungup && default_device && tty_sid > 0) {
345 * If we have received a hangup, we need to send a SIGHUP
346 * to the terminal's controlling process. The reason is
347 * that the original stream head for the terminal hasn't
348 * seen the M_HANGUP message (it went up through the ppp
349 * driver to the stream head for our fd to /dev/ppp).
351 kill(tty_sid, SIGHUP);
357 * Check whether the link seems not to be 8-bit clean.
365 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
370 s = "bit 7 set to 1";
373 s = "bit 7 set to 0";
383 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
384 syslog(LOG_WARNING, "All received characters had %s", s);
389 * List of valid speeds.
392 int speed_int, speed_val;
464 * Translate from bits/second to a speed_t.
470 struct speed *speedp;
474 for (speedp = speeds; speedp->speed_int; speedp++)
475 if (bps == speedp->speed_int)
476 return speedp->speed_val;
477 syslog(LOG_WARNING, "speed %d not supported", bps);
482 * Translate from a speed_t to bits/second.
488 struct speed *speedp;
492 for (speedp = speeds; speedp->speed_int; speedp++)
493 if (speed == speedp->speed_val)
494 return speedp->speed_int;
499 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
500 * at the requested speed, etc. If `local' is true, set CLOCAL
501 * regardless of whether the modem option was specified.
504 set_up_tty(fd, local)
509 #if !defined (CRTSCTS)
513 if (tcgetattr(fd, &tios) < 0) {
514 syslog(LOG_ERR, "tcgetattr: %m");
519 if (ioctl (fd, TCGETX, &tiox) < 0) {
520 syslog (LOG_ERR, "TCGETX: %m");
530 ioctl(fd, TIOCGWINSZ, &wsinfo);
533 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
536 tios.c_cflag |= CRTSCTS;
537 else if (crtscts < 0)
538 tios.c_cflag &= ~CRTSCTS;
541 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 (ioctl (fd, TCSETXF, &tiox) < 0){
587 syslog (LOG_ERR, "TCSETXF: %m");
592 baud_rate = inspeed = baud_rate_of(speed);
597 * restore_tty - restore the terminal to the saved settings.
604 if (!default_device) {
606 * Turn off echoing, because otherwise we can get into
607 * a loop with the tty and the modem echoing to each other.
608 * We presume we are the sole user of this tty device, so
609 * when we close it, it will revert to its defaults anyway.
611 inittermios.c_lflag &= ~(ECHO | ECHONL);
613 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
614 if (!hungup && errno != ENXIO)
615 syslog(LOG_WARNING, "tcsetattr: %m");
617 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
618 if (!hungup && errno != ENXIO)
619 syslog (LOG_ERR, "TCSETXF: %m");
622 ioctl(fd, TIOCSWINSZ, &wsinfo);
628 * setdtr - control the DTR line on the serial port.
629 * This is called from die(), so it shouldn't call die().
635 int modembits = TIOCM_DTR;
637 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
641 * open_loopback - open the device we use for getting packets
642 * in demand mode. Under Solaris 2, we use our existing fd
651 * output - Output PPP packet.
664 log_packet(p, len, "sent ");
667 data.buf = (caddr_t) p;
669 while (putmsg(pppfd, NULL, &data, 0) < 0) {
670 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
672 syslog(LOG_ERR, "Couldn't send packet: %m");
676 pfd.events = POLLOUT;
677 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
683 * wait_input - wait until there is data available on fd,
684 * for the length of time specified by *timo (indefinite
689 struct timeval *timo;
694 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
696 pfd.events = POLLIN | POLLPRI | POLLHUP;
697 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
698 syslog(LOG_ERR, "poll: %m");
704 * wait_loop_output - wait until there is data available on the
705 * loopback, for the length of time specified by *timo (indefinite
709 wait_loop_output(timo)
710 struct timeval *timo;
716 * wait_time - wait for a given length of time or until a
717 * signal is received.
721 struct timeval *timo;
725 n = select(0, NULL, NULL, NULL, timo);
726 if (n < 0 && errno != EINTR) {
727 syslog(LOG_ERR, "select: %m");
734 * read_packet - get a PPP packet from the serial device.
740 struct strbuf ctrl, data;
742 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
745 data.maxlen = PPP_MRU + PPP_HDRLEN;
746 data.buf = (caddr_t) buf;
747 ctrl.maxlen = sizeof(ctrlbuf);
748 ctrl.buf = (caddr_t) ctrlbuf;
750 len = getmsg(pppfd, &ctrl, &data, &flags);
752 if (errno = EAGAIN || errno == EINTR)
754 syslog(LOG_ERR, "Error reading packet: %m");
762 * Got a M_PROTO or M_PCPROTO message. Interpret it
763 * as a DLPI primitive??
766 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
767 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
773 * get_loop_output - get outgoing packets from the ppp device,
774 * and detect when we want to bring the real link up.
775 * Return value is 1 if we need to bring up the link, 0 otherwise.
783 while ((len = read_packet(inpacket_buf)) > 0) {
784 if (loop_frame(inpacket_buf, len))
791 * ppp_send_config - configure the transmit characteristics of
795 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");
822 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
825 ppp_set_xaccm(unit, accm)
830 && 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");
855 /* can't set these if we don't have a stream attached below /dev/ppp */
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");
868 * ccp_test - ask kernel whether a given compression method
869 * is acceptable for use.
872 ccp_test(unit, opt_ptr, opt_len, for_transmit)
873 int unit, opt_len, for_transmit;
876 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
877 opt_ptr, opt_len, 0) >= 0)
879 return (errno == ENOSR)? 0: -1;
883 * ccp_flags_set - inform kernel about the current state of CCP.
886 ccp_flags_set(unit, isopen, isup)
887 int unit, isopen, isup;
891 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
892 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
893 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
894 if (!hungup || errno != ENXIO)
895 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
900 * get_idle_time - return how long the link has been idle.
907 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
912 * set_filters - transfer the pass and active filters to the kernel.
915 set_filters(pass, active)
916 struct bpf_program *pass, *active;
920 if (pass->bf_len > 0) {
921 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
922 sizeof(struct bpf_program), 0) < 0) {
923 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
927 if (active->bf_len > 0) {
928 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
929 sizeof(struct bpf_program), 0) < 0) {
930 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
939 * ccp_fatal_error - returns 1 if decompression was disabled as a
940 * result of an error detected after decompression of a packet,
941 * 0 otherwise. This is necessary because of patent nonsense.
944 ccp_fatal_error(unit)
950 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
951 if (errno != ENXIO && errno != EINVAL)
952 syslog(LOG_ERR, "Couldn't get compression flags: %m");
955 return cf[0] & CCP_FATALERROR;
959 * sifvjcomp - config tcp header compression
962 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
963 int u, vjcomp, xcidcomp, xmaxcid;
969 maxcid[0] = xcidcomp;
970 maxcid[1] = 15; /* XXX should be rmaxcid */
971 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
972 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
976 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
977 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
978 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
979 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
981 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
988 * sifup - Config the interface up and enable IP packets to pass.
996 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
997 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
998 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
1001 ifr.ifr_flags |= IFF_UP;
1002 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1003 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
1011 * sifdown - Config the interface down and disable IP.
1021 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1022 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1023 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
1026 ifr.ifr_flags &= ~IFF_UP;
1027 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1028 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1036 * sifnpmode - Set the mode for handling packets for a given NP.
1039 sifnpmode(u, proto, mode)
1047 npi[1] = (int) mode;
1048 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1049 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1055 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1058 * sifaddr - Config the interface IP addresses and netmask.
1067 memset(&ifr, 0, sizeof(ifr));
1068 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1069 ifr.ifr_addr.sa_family = AF_INET;
1070 INET_ADDR(ifr.ifr_addr) = m;
1071 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1072 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1074 ifr.ifr_addr.sa_family = AF_INET;
1075 INET_ADDR(ifr.ifr_addr) = o;
1076 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1077 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1079 ifr.ifr_dstaddr.sa_family = AF_INET;
1080 INET_ADDR(ifr.ifr_dstaddr) = h;
1081 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1082 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1084 ifr.ifr_metric = link_mtu;
1085 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1086 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1093 * cifaddr - Clear the interface IP addresses, and delete routes
1094 * through the interface if possible.
1101 #if defined(__USLC__) /* was: #if 0 */
1102 cifroute(unit, ouraddr, hisaddr);
1104 syslog(LOG_NOTICE, "Removing ppp interface unit");
1105 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1106 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1116 * sifdefaultroute - assign a default route through the address given.
1119 sifdefaultroute(u, l, g)
1125 #if defined(__USLC__)
1126 g = l; /* use the local address as gateway */
1128 memset(&rt, 0, sizeof(rt));
1129 rt.rt_dst.sa_family = AF_INET;
1130 INET_ADDR(rt.rt_dst) = 0;
1131 rt.rt_gateway.sa_family = AF_INET;
1132 INET_ADDR(rt.rt_gateway) = g;
1133 rt.rt_flags = RTF_GATEWAY;
1135 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1136 syslog(LOG_ERR, "Can't add default route: %m");
1140 default_route_gateway = g;
1145 * cifdefaultroute - delete a default route through the address given.
1148 cifdefaultroute(u, l, g)
1154 #if defined(__USLC__)
1155 g = l; /* use the local address as gateway */
1157 memset(&rt, 0, sizeof(rt));
1158 rt.rt_dst.sa_family = AF_INET;
1159 INET_ADDR(rt.rt_dst) = 0;
1160 rt.rt_gateway.sa_family = AF_INET;
1161 INET_ADDR(rt.rt_gateway) = g;
1162 rt.rt_flags = RTF_GATEWAY;
1164 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1165 syslog(LOG_ERR, "Can't delete default route: %m");
1169 default_route_gateway = 0;
1174 * sifproxyarp - Make a proxy ARP entry for the peer.
1177 sifproxyarp(unit, hisaddr)
1181 struct arpreq arpreq;
1183 memset(&arpreq, 0, sizeof(arpreq));
1184 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1187 arpreq.arp_pa.sa_family = AF_INET;
1188 INET_ADDR(arpreq.arp_pa) = hisaddr;
1189 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1190 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1191 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1195 proxy_arp_addr = hisaddr;
1200 * cifproxyarp - Delete the proxy ARP entry for the peer.
1203 cifproxyarp(unit, hisaddr)
1207 struct arpreq arpreq;
1209 memset(&arpreq, 0, sizeof(arpreq));
1210 arpreq.arp_pa.sa_family = AF_INET;
1211 INET_ADDR(arpreq.arp_pa) = hisaddr;
1212 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1213 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1222 * get_ether_addr - get the hardware address of an interface on the
1223 * the same subnet as ipaddr.
1228 get_ether_addr(ipaddr, hwaddr)
1230 struct sockaddr *hwaddr;
1232 struct ifreq *ifr, *ifend, ifreq;
1235 u_int32_t ina, mask;
1238 * Scan through the system's network interfaces.
1241 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1244 ifc.ifc_len = nif * sizeof(struct ifreq);
1245 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1246 if (ifc.ifc_req == 0)
1248 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1249 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1252 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1253 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1254 if (ifr->ifr_addr.sa_family != AF_INET)
1257 * Check that the interface is up, and not point-to-point or loopback.
1259 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1260 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1262 if ((ifreq.ifr_flags &
1263 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1264 != (IFF_UP|IFF_BROADCAST))
1267 * Get its netmask and check that it's on the right subnet.
1269 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1271 ina = INET_ADDR(ifr->ifr_addr);
1272 mask = INET_ADDR(ifreq.ifr_addr);
1273 if ((ipaddr & mask) == (ina & mask))
1278 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1282 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1283 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1284 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1292 * get_hw_addr - obtain the hardware address for a named interface.
1295 get_hw_addr(name, hwaddr)
1297 struct sockaddr *hwaddr;
1300 int unit, iffd, adrlen;
1301 unsigned char *adrp;
1304 union DL_primitives prim;
1309 * We have to open the device and ask it for its hardware address.
1310 * First split apart the device name and unit.
1312 strcpy(ifdev, "/dev/");
1313 q = ifdev + 5; /* strlen("/dev/") */
1314 while (*name != 0 && !isdigit(*name))
1320 * Open the device and do a DLPI attach and phys_addr_req.
1322 iffd = open(ifdev, O_RDWR);
1324 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1327 if (dlpi_attach(iffd, unit) < 0
1328 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1329 || dlpi_info_req(iffd) < 0
1330 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1335 adrlen = reply.prim.info_ack.dl_addr_length;
1336 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1337 #if DL_CURRENT_VERSION >= 2
1338 if (reply.prim.info_ack.dl_sap_length < 0)
1339 adrlen += reply.prim.info_ack.dl_sap_length;
1341 adrp += reply.prim.info_ack.dl_sap_length;
1343 hwaddr->sa_family = AF_UNSPEC;
1344 memcpy(hwaddr->sa_data, adrp, adrlen);
1350 dlpi_attach(fd, ppa)
1353 dl_attach_req_t req;
1356 req.dl_primitive = DL_ATTACH_REQ;
1358 buf.len = sizeof(req);
1359 buf.buf = (void *) &req;
1360 return putmsg(fd, &buf, NULL, RS_HIPRI);
1370 req.dl_primitive = DL_INFO_REQ;
1371 buf.len = sizeof(req);
1372 buf.buf = (void *) &req;
1373 return putmsg(fd, &buf, NULL, RS_HIPRI);
1377 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1378 union DL_primitives *reply;
1379 int fd, expected_prim, maxlen;
1386 * Use poll to wait for a message with a timeout.
1389 pfd.events = POLLIN | POLLPRI;
1391 n = poll(&pfd, 1, 1000);
1392 } while (n == -1 && errno == EINTR);
1399 buf.maxlen = maxlen;
1400 buf.buf = (void *) reply;
1402 if (getmsg(fd, &buf, NULL, &flags) < 0)
1405 if (buf.len < sizeof(ulong)) {
1407 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1411 if (reply->dl_primitive == expected_prim)
1415 if (reply->dl_primitive == DL_ERROR_ACK) {
1416 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1417 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1418 reply->error_ack.dl_error_primitive);
1420 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1421 reply->dl_primitive);
1429 * Return user specified netmask, modified by any mask we might determine
1430 * for address `addr' (in network byte order).
1431 * Here we scan through the system's list of interfaces, looking for
1432 * any non-point-to-point interfaces which might appear to be on the same
1433 * network as `addr'. If we find any, we OR in their netmask to the
1434 * user-specified netmask.
1440 u_int32_t mask, nmask, ina;
1441 struct ifreq *ifr, *ifend, ifreq;
1446 if (IN_CLASSA(addr)) /* determine network mask for address class */
1447 nmask = IN_CLASSA_NET;
1448 else if (IN_CLASSB(addr))
1449 nmask = IN_CLASSB_NET;
1451 nmask = IN_CLASSC_NET;
1452 /* class D nets are disallowed by bad_ip_adrs */
1453 mask = netmask | htonl(nmask);
1456 * Scan through the system's network interfaces.
1459 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1462 ifc.ifc_len = nif * sizeof(struct ifreq);
1463 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1464 if (ifc.ifc_req == 0)
1466 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1467 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1470 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1471 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1473 * Check the interface's internet address.
1475 if (ifr->ifr_addr.sa_family != AF_INET)
1477 ina = INET_ADDR(ifr->ifr_addr);
1478 if ((ntohl(ina) & nmask) != (addr & nmask))
1481 * Check that the interface is up, and not point-to-point or loopback.
1483 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1484 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1486 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1490 * Get its netmask and OR it into our mask.
1492 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1494 mask |= INET_ADDR(ifreq.ifr_addr);
1501 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1504 logwtmp(line, name, host)
1505 const char *line, *name, *host;
1507 static struct utmpx utmpx;
1511 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1512 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1513 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1514 utmpx.ut_pid = getpid();
1515 utmpx.ut_type = USER_PROCESS;
1517 utmpx.ut_type = DEAD_PROCESS;
1519 gettimeofday(&utmpx.ut_tv, NULL);
1520 updwtmpx("/var/adm/wtmpx", &utmpx);
1524 * gethostid - return the serial number of this machine.
1531 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1532 syslog(LOG_ERR, "sysinfo: %m");
1535 return (int) strtoul(buf, NULL, 16);
1539 strioctl(fd, cmd, ptr, ilen, olen)
1540 int fd, cmd, ilen, olen;
1543 struct strioctl str;
1549 if (ioctl(fd, I_STR, &str) == -1)
1551 if (str.ic_len != olen)
1552 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1553 olen, str.ic_len, cmd);
1558 * lock - create a lock file for the named lock device
1561 #define LOCK_PREFIX "/var/spool/locks/LK."
1562 static char lock_file[40]; /* name of lock file created */
1572 if (stat(dev, &sbuf) < 0) {
1573 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1576 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1577 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1580 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1581 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1583 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1585 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1586 /* Read the lock file to find out who has the device locked */
1587 n = read(fd, ascii_pid, 11);
1589 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1593 pid = atoi(ascii_pid);
1594 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1595 /* pid no longer exists - remove the lock file */
1596 if (unlink(lock_file) == 0) {
1598 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1602 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1605 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1610 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1615 sprintf(ascii_pid, "%10d\n", getpid());
1616 write(fd, ascii_pid, 11);
1623 * unlock - remove our lockfile
1636 * cifroute - delete a route through the addresses given.
1639 cifroute(u, our, his)
1645 memset(&rt, 0, sizeof(rt));
1646 rt.rt_dst.sa_family = AF_INET;
1647 INET_ADDR(rt.rt_dst) = his;
1648 rt.rt_gateway.sa_family = AF_INET;
1649 INET_ADDR(rt.rt_gateway) = our;
1650 rt.rt_flags = RTF_HOST;
1652 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1653 syslog(LOG_ERR, "Can't delete route: %m");