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 1.11 1996/05/27 00:01:53 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));
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");
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");
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);
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 (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
285 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
289 /* Link the serial port under the PPP multiplexor. */
290 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
291 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
297 * restore_loop - reattach the ppp unit to the loopback.
298 * This doesn't need to do anything because disestablish_ppp does it.
306 * disestablish_ppp - Restore the serial port to normal operation.
307 * It attempts to reconstruct the stream with the previously popped
308 * modules. This shouldn't call die() because it's called from die().
317 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
319 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
324 while (ioctl(fd, I_POP, 0) >= 0)
326 for (i = tty_nmodules - 1; i >= 0; --i)
327 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
328 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
331 if (hungup && default_device && tty_sid > 0) {
333 * If we have received a hangup, we need to send a SIGHUP
334 * to the terminal's controlling process. The reason is
335 * that the original stream head for the terminal hasn't
336 * seen the M_HANGUP message (it went up through the ppp
337 * driver to the stream head for our fd to /dev/ppp).
339 kill(tty_sid, SIGHUP);
345 * Check whether the link seems not to be 8-bit clean.
353 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
358 s = "bit 7 set to 1";
361 s = "bit 7 set to 0";
371 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
372 syslog(LOG_WARNING, "All received characters had %s", s);
377 * List of valid speeds.
380 int speed_int, speed_val;
452 * Translate from bits/second to a speed_t.
458 struct speed *speedp;
462 for (speedp = speeds; speedp->speed_int; speedp++)
463 if (bps == speedp->speed_int)
464 return speedp->speed_val;
465 syslog(LOG_WARNING, "speed %d not supported", bps);
470 * Translate from a speed_t to bits/second.
476 struct speed *speedp;
480 for (speedp = speeds; speedp->speed_int; speedp++)
481 if (speed == speedp->speed_val)
482 return speedp->speed_int;
487 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
488 * at the requested speed, etc. If `local' is true, set CLOCAL
489 * regardless of whether the modem option was specified.
492 set_up_tty(fd, local)
497 #if !defined (CRTSCTS)
501 if (tcgetattr(fd, &tios) < 0) {
502 syslog(LOG_ERR, "tcgetattr: %m");
507 if (ioctl (fd, TCGETX, &tiox) < 0) {
508 syslog (LOG_ERR, "TCGETX: %m");
518 ioctl(fd, TIOCGWINSZ, &wsinfo);
521 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
524 tios.c_cflag |= CRTSCTS;
525 else if (crtscts < 0)
526 tios.c_cflag &= ~CRTSCTS;
529 tiox.x_hflag |= RTSXOFF|CTSXON;
531 else if (crtscts < 0) {
532 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
536 tios.c_cflag |= CS8 | CREAD | HUPCL;
538 tios.c_cflag |= CLOCAL;
539 tios.c_iflag = IGNBRK | IGNPAR;
543 tios.c_cc[VTIME] = 0;
546 tios.c_iflag |= IXON | IXOFF;
547 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
548 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
551 speed = translate_speed(inspeed);
553 cfsetospeed(&tios, speed);
554 cfsetispeed(&tios, speed);
556 speed = cfgetospeed(&tios);
558 * We can't proceed if the serial port speed is 0,
559 * since that implies that the serial port is disabled.
562 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
568 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
569 syslog(LOG_ERR, "tcsetattr: %m");
574 if (ioctl (fd, TCSETXF, &tiox) < 0){
575 syslog (LOG_ERR, "TCSETXF: %m");
580 baud_rate = inspeed = baud_rate_of(speed);
585 * restore_tty - restore the terminal to the saved settings.
592 if (!default_device) {
594 * Turn off echoing, because otherwise we can get into
595 * a loop with the tty and the modem echoing to each other.
596 * We presume we are the sole user of this tty device, so
597 * when we close it, it will revert to its defaults anyway.
599 inittermios.c_lflag &= ~(ECHO | ECHONL);
601 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
602 if (!hungup && errno != ENXIO)
603 syslog(LOG_WARNING, "tcsetattr: %m");
605 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
606 if (!hungup && errno != ENXIO)
607 syslog (LOG_ERR, "TCSETXF: %m");
610 ioctl(fd, TIOCSWINSZ, &wsinfo);
616 * setdtr - control the DTR line on the serial port.
617 * This is called from die(), so it shouldn't call die().
623 int modembits = TIOCM_DTR;
625 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
629 * open_loopback - open the device we use for getting packets
630 * in demand mode. Under Solaris 2, we use our existing fd
639 * output - Output PPP packet.
652 log_packet(p, len, "sent ");
655 data.buf = (caddr_t) p;
657 while (putmsg(pppfd, NULL, &data, 0) < 0) {
658 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
660 syslog(LOG_ERR, "Couldn't send packet: %m");
664 pfd.events = POLLOUT;
665 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
671 * wait_input - wait until there is data available on fd,
672 * for the length of time specified by *timo (indefinite
677 struct timeval *timo;
682 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
684 pfd.events = POLLIN | POLLPRI | POLLHUP;
685 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
686 syslog(LOG_ERR, "poll: %m");
692 * wait_loop_output - wait until there is data available on the
693 * loopback, for the length of time specified by *timo (indefinite
697 wait_loop_output(timo)
698 struct timeval *timo;
704 * wait_time - wait for a given length of time or until a
705 * signal is received.
709 struct timeval *timo;
713 n = select(0, NULL, NULL, NULL, timo);
714 if (n < 0 && errno != EINTR) {
715 syslog(LOG_ERR, "select: %m");
722 * read_packet - get a PPP packet from the serial device.
728 struct strbuf ctrl, data;
730 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
733 data.maxlen = PPP_MRU + PPP_HDRLEN;
734 data.buf = (caddr_t) buf;
735 ctrl.maxlen = sizeof(ctrlbuf);
736 ctrl.buf = (caddr_t) ctrlbuf;
738 len = getmsg(pppfd, &ctrl, &data, &flags);
740 if (errno = EAGAIN || errno == EINTR)
742 syslog(LOG_ERR, "Error reading packet: %m");
750 * Got a M_PROTO or M_PCPROTO message. Interpret it
751 * as a DLPI primitive??
754 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
755 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
761 * get_loop_output - get outgoing packets from the ppp device,
762 * and detect when we want to bring the real link up.
763 * Return value is 1 if we need to bring up the link, 0 otherwise.
771 while ((len = read_packet(inpacket_buf)) > 0) {
772 if (loop_frame(inpacket_buf, len))
779 * ppp_send_config - configure the transmit characteristics of
783 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
791 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
792 if (hungup && errno == ENXIO)
794 syslog(LOG_ERR, "Couldn't set MTU: %m");
796 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
797 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
799 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
800 cf[1] = COMP_PROT | COMP_AC;
801 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
802 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
807 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
810 ppp_set_xaccm(unit, accm)
814 if (strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
815 if (!hungup || errno != ENXIO)
816 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
821 * ppp_recv_config - configure the receive-side characteristics of
825 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
833 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
834 if (hungup && errno == ENXIO)
836 syslog(LOG_ERR, "Couldn't set MRU: %m");
838 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
839 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
841 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
842 cf[1] = DECOMP_PROT | DECOMP_AC;
843 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
844 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
849 * ccp_test - ask kernel whether a given compression method
850 * is acceptable for use.
853 ccp_test(unit, opt_ptr, opt_len, for_transmit)
854 int unit, opt_len, for_transmit;
857 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
858 opt_ptr, opt_len, 0) >= 0)
860 return (errno == ENOSR)? 0: -1;
864 * ccp_flags_set - inform kernel about the current state of CCP.
867 ccp_flags_set(unit, isopen, isup)
868 int unit, isopen, isup;
872 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
873 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
874 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
875 if (!hungup || errno != ENXIO)
876 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
881 * get_idle_time - return how long the link has been idle.
888 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
893 * set_filters - transfer the pass and active filters to the kernel.
896 set_filters(pass, active)
897 struct bpf_program *pass, *active;
901 if (pass->bf_len > 0) {
902 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
903 sizeof(struct bpf_program), 0) < 0) {
904 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
908 if (active->bf_len > 0) {
909 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
910 sizeof(struct bpf_program), 0) < 0) {
911 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
920 * ccp_fatal_error - returns 1 if decompression was disabled as a
921 * result of an error detected after decompression of a packet,
922 * 0 otherwise. This is necessary because of patent nonsense.
925 ccp_fatal_error(unit)
931 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
932 if (errno != ENXIO && errno != EINVAL)
933 syslog(LOG_ERR, "Couldn't get compression flags: %m");
936 return cf[0] & CCP_FATALERROR;
940 * sifvjcomp - config tcp header compression
943 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
944 int u, vjcomp, xcidcomp, xmaxcid;
950 maxcid[0] = xcidcomp;
951 maxcid[1] = 15; /* XXX should be rmaxcid */
952 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
953 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
957 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
958 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
959 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
960 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
962 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
969 * sifup - Config the interface up and enable IP packets to pass.
977 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
978 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
979 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
982 ifr.ifr_flags |= IFF_UP;
983 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
984 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
992 * sifdown - Config the interface down and disable IP.
1002 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1003 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1004 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
1007 ifr.ifr_flags &= ~IFF_UP;
1008 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1009 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1017 * sifnpmode - Set the mode for handling packets for a given NP.
1020 sifnpmode(u, proto, mode)
1028 npi[1] = (int) mode;
1029 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1030 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1036 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1039 * sifaddr - Config the interface IP addresses and netmask.
1048 memset(&ifr, 0, sizeof(ifr));
1049 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1050 ifr.ifr_addr.sa_family = AF_INET;
1051 INET_ADDR(ifr.ifr_addr) = m;
1052 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1053 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1055 ifr.ifr_addr.sa_family = AF_INET;
1056 INET_ADDR(ifr.ifr_addr) = o;
1057 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1058 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1060 ifr.ifr_dstaddr.sa_family = AF_INET;
1061 INET_ADDR(ifr.ifr_dstaddr) = h;
1062 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1063 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1065 ifr.ifr_metric = link_mtu;
1066 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1067 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1074 * cifaddr - Clear the interface IP addresses, and delete routes
1075 * through the interface if possible.
1084 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1085 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1095 * sifdefaultroute - assign a default route through the address given.
1098 sifdefaultroute(u, g)
1104 memset(&rt, 0, sizeof(rt));
1105 rt.rt_dst.sa_family = AF_INET;
1106 INET_ADDR(rt.rt_dst) = 0;
1107 rt.rt_gateway.sa_family = AF_INET;
1108 INET_ADDR(rt.rt_gateway) = g;
1109 rt.rt_flags = RTF_GATEWAY;
1111 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1112 syslog(LOG_ERR, "Can't add default route: %m");
1116 default_route_gateway = g;
1121 * cifdefaultroute - delete a default route through the address given.
1124 cifdefaultroute(u, g)
1130 memset(&rt, 0, sizeof(rt));
1131 rt.rt_dst.sa_family = AF_INET;
1132 INET_ADDR(rt.rt_dst) = 0;
1133 rt.rt_gateway.sa_family = AF_INET;
1134 INET_ADDR(rt.rt_gateway) = g;
1135 rt.rt_flags = RTF_GATEWAY;
1137 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1138 syslog(LOG_ERR, "Can't delete default route: %m");
1142 default_route_gateway = 0;
1147 * sifproxyarp - Make a proxy ARP entry for the peer.
1150 sifproxyarp(unit, hisaddr)
1154 struct arpreq arpreq;
1156 memset(&arpreq, 0, sizeof(arpreq));
1157 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1160 arpreq.arp_pa.sa_family = AF_INET;
1161 INET_ADDR(arpreq.arp_pa) = hisaddr;
1162 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1163 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1164 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1168 proxy_arp_addr = hisaddr;
1173 * cifproxyarp - Delete the proxy ARP entry for the peer.
1176 cifproxyarp(unit, hisaddr)
1180 struct arpreq arpreq;
1182 memset(&arpreq, 0, sizeof(arpreq));
1183 arpreq.arp_pa.sa_family = AF_INET;
1184 INET_ADDR(arpreq.arp_pa) = hisaddr;
1185 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1186 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1195 * get_ether_addr - get the hardware address of an interface on the
1196 * the same subnet as ipaddr.
1201 get_ether_addr(ipaddr, hwaddr)
1203 struct sockaddr *hwaddr;
1205 struct ifreq *ifr, *ifend, ifreq;
1208 u_int32_t ina, mask;
1211 * Scan through the system's network interfaces.
1214 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1217 ifc.ifc_len = nif * sizeof(struct ifreq);
1218 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1219 if (ifc.ifc_req == 0)
1221 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1222 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1225 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1226 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1227 if (ifr->ifr_addr.sa_family != AF_INET)
1230 * Check that the interface is up, and not point-to-point or loopback.
1232 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1233 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1235 if ((ifreq.ifr_flags &
1236 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1237 != (IFF_UP|IFF_BROADCAST))
1240 * Get its netmask and check that it's on the right subnet.
1242 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1244 ina = INET_ADDR(ifr->ifr_addr);
1245 mask = INET_ADDR(ifreq.ifr_addr);
1246 if ((ipaddr & mask) == (ina & mask))
1251 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1255 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1256 if (!get_hw_addr(ifr->ifr_name, hwaddr)) {
1257 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1265 * get_hw_addr - obtain the hardware address for a named interface.
1268 get_hw_addr(name, hwaddr)
1270 struct sockaddr *hwaddr;
1273 int unit, iffd, adrlen;
1274 unsigned char *adrp;
1277 union DL_primitives prim;
1282 * We have to open the device and ask it for its hardware address.
1283 * First split apart the device name and unit.
1285 strcpy(ifdev, "/dev/");
1286 q = ifdev + 5; /* strlen("/dev/") */
1287 while (*name != 0 && !isdigit(*name))
1293 * Open the device and do a DLPI attach and phys_addr_req.
1295 iffd = open(ifdev, O_RDWR);
1297 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1300 if (dlpi_attach(iffd, unit) < 0
1301 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1302 || dlpi_info_req(iffd) < 0
1303 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1308 adrlen = reply.prim.info_ack.dl_addr_length;
1309 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1310 #if DL_CURRENT_VERSION >= 2
1311 if (reply.prim.info_ack.dl_sap_length < 0)
1312 adrlen += reply.prim.info_ack.dl_sap_length;
1314 adrp += reply.prim.info_ack.dl_sap_length;
1316 hwaddr->sa_family = AF_UNSPEC;
1317 memcpy(hwaddr->sa_data, adrp, adrlen);
1323 dlpi_attach(fd, ppa)
1326 dl_attach_req_t req;
1329 req.dl_primitive = DL_ATTACH_REQ;
1331 buf.len = sizeof(req);
1332 buf.buf = (void *) &req;
1333 return putmsg(fd, &buf, NULL, RS_HIPRI);
1343 req.dl_primitive = DL_INFO_REQ;
1344 buf.len = sizeof(req);
1345 buf.buf = (void *) &req;
1346 return putmsg(fd, &buf, NULL, RS_HIPRI);
1350 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1351 union DL_primitives *reply;
1352 int fd, expected_prim, maxlen;
1359 * Use poll to wait for a message with a timeout.
1362 pfd.events = POLLIN | POLLPRI;
1364 n = poll(&pfd, 1, 1000);
1365 } while (n == -1 && errno == EINTR);
1372 buf.maxlen = maxlen;
1373 buf.buf = (void *) reply;
1375 if (getmsg(fd, &buf, NULL, &flags) < 0)
1378 if (buf.len < sizeof(ulong)) {
1380 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1384 if (reply->dl_primitive == expected_prim)
1388 if (reply->dl_primitive == DL_ERROR_ACK) {
1389 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1390 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1391 reply->error_ack.dl_error_primitive);
1393 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1394 reply->dl_primitive);
1402 * Return user specified netmask, modified by any mask we might determine
1403 * for address `addr' (in network byte order).
1404 * Here we scan through the system's list of interfaces, looking for
1405 * any non-point-to-point interfaces which might appear to be on the same
1406 * network as `addr'. If we find any, we OR in their netmask to the
1407 * user-specified netmask.
1413 u_int32_t mask, nmask, ina;
1414 struct ifreq *ifr, *ifend, ifreq;
1419 if (IN_CLASSA(addr)) /* determine network mask for address class */
1420 nmask = IN_CLASSA_NET;
1421 else if (IN_CLASSB(addr))
1422 nmask = IN_CLASSB_NET;
1424 nmask = IN_CLASSC_NET;
1425 /* class D nets are disallowed by bad_ip_adrs */
1426 mask = netmask | htonl(nmask);
1429 * Scan through the system's network interfaces.
1432 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1435 ifc.ifc_len = nif * sizeof(struct ifreq);
1436 ifc.ifc_buf = (caddr_t) alloca(ifc.ifc_len);
1437 if (ifc.ifc_req == 0)
1439 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1440 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1443 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1444 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1446 * Check the interface's internet address.
1448 if (ifr->ifr_addr.sa_family != AF_INET)
1450 ina = INET_ADDR(ifr->ifr_addr);
1451 if ((ntohl(ina) & nmask) != (addr & nmask))
1454 * Check that the interface is up, and not point-to-point or loopback.
1456 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1457 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1459 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1463 * Get its netmask and OR it into our mask.
1465 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1467 mask |= INET_ADDR(ifreq.ifr_addr);
1474 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1477 logwtmp(line, name, host)
1478 char *line, *name, *host;
1480 static struct utmpx utmpx;
1484 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1485 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1486 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1487 utmpx.ut_pid = getpid();
1488 utmpx.ut_type = USER_PROCESS;
1490 utmpx.ut_type = DEAD_PROCESS;
1492 gettimeofday(&utmpx.ut_tv, NULL);
1493 updwtmpx("/var/adm/wtmpx", &utmpx);
1498 * gethostid - return the serial number of this machine.
1505 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1506 syslog(LOG_ERR, "sysinfo: %m");
1509 return (int) strtoul(buf, NULL, 16);
1513 strioctl(fd, cmd, ptr, ilen, olen)
1514 int fd, cmd, ilen, olen;
1517 struct strioctl str;
1523 if (ioctl(fd, I_STR, &str) == -1)
1525 if (str.ic_len != olen)
1526 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1527 olen, str.ic_len, cmd);
1532 * lock - create a lock file for the named lock device
1535 #define LOCK_PREFIX "/var/spool/locks/LK."
1536 static char lock_file[40]; /* name of lock file created */
1546 if (stat(dev, &sbuf) < 0) {
1547 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1550 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1551 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1554 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1555 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1557 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1559 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1560 /* Read the lock file to find out who has the device locked */
1561 n = read(fd, ascii_pid, 11);
1563 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1567 pid = atoi(ascii_pid);
1568 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1569 /* pid no longer exists - remove the lock file */
1570 if (unlink(lock_file) == 0) {
1572 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1576 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1579 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1584 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1589 sprintf(ascii_pid, "%10d\n", getpid());
1590 write(fd, ascii_pid, 11);
1597 * unlock - remove our lockfile