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 1.20 1999/02/26 10:35:34 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>
64 #include <sys/tihdr.h>
65 #include <sys/tiuser.h>
66 #include <inet/common.h>
67 #include <inet/mib2.h>
72 static int fdmuxid = -1;
74 static int ipmuxid = -1;
76 static int restore_term;
77 static struct termios inittermios;
79 static struct termiox inittermiox;
80 static int termiox_ok;
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 *, u_int32_t, 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
234 * daemon - Detach us from controlling terminal session.
237 daemon(nochdir, noclose)
238 int nochdir, noclose;
242 if ((pid = fork()) < 0)
245 exit(0); /* parent dies */
250 fclose(stdin); /* don't need stdin, stdout, stderr */
258 * ppp_available - check whether the system has any ppp interfaces
265 return stat("/dev/ppp", &buf) >= 0;
269 * establish_ppp - Turn the serial port into a ppp interface.
277 /* Pop any existing modules off the tty stream. */
279 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
280 || ioctl(fd, I_POP, 0) < 0)
284 /* Push the async hdlc module and the compressor module. */
285 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
286 syslog(LOG_ERR, "Couldn't push PPP Async HDLC module: %m");
289 if (kdebugflag & 4) {
290 i = PPPDBG_LOG + PPPDBG_AHDLC;
291 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
293 if (ioctl(fd, I_PUSH, "ppp_comp") < 0) {
294 syslog(LOG_ERR, "Couldn't push PPP compression module: %m");
297 if (kdebugflag & 2) {
298 i = PPPDBG_LOG + PPPDBG_COMP;
299 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
302 /* Link the serial port under the PPP multiplexor. */
303 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
304 syslog(LOG_ERR, "Can't link tty to PPP mux: %m");
310 * restore_loop - reattach the ppp unit to the loopback.
311 * This doesn't need to do anything because disestablish_ppp does it.
319 * disestablish_ppp - Restore the serial port to normal operation.
320 * It attempts to reconstruct the stream with the previously popped
321 * modules. This shouldn't call die() because it's called from die().
330 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
332 syslog(LOG_ERR, "Can't unlink tty from PPP mux: %m");
337 while (ioctl(fd, I_POP, 0) >= 0)
339 for (i = tty_nmodules - 1; i >= 0; --i)
340 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
341 syslog(LOG_ERR, "Couldn't restore tty module %s: %m",
344 if (hungup && default_device && tty_sid > 0) {
346 * If we have received a hangup, we need to send a SIGHUP
347 * to the terminal's controlling process. The reason is
348 * that the original stream head for the terminal hasn't
349 * seen the M_HANGUP message (it went up through the ppp
350 * driver to the stream head for our fd to /dev/ppp).
352 kill(tty_sid, SIGHUP);
358 * Check whether the link seems not to be 8-bit clean.
366 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
371 s = "bit 7 set to 1";
374 s = "bit 7 set to 0";
384 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
385 syslog(LOG_WARNING, "All received characters had %s", s);
390 * List of valid speeds.
393 int speed_int, speed_val;
465 * Translate from bits/second to a speed_t.
471 struct speed *speedp;
475 for (speedp = speeds; speedp->speed_int; speedp++)
476 if (bps == speedp->speed_int)
477 return speedp->speed_val;
478 syslog(LOG_WARNING, "speed %d not supported", bps);
483 * Translate from a speed_t to bits/second.
489 struct speed *speedp;
493 for (speedp = speeds; speedp->speed_int; speedp++)
494 if (speed == speedp->speed_val)
495 return speedp->speed_int;
500 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
501 * at the requested speed, etc. If `local' is true, set CLOCAL
502 * regardless of whether the modem option was specified.
505 set_up_tty(fd, local)
510 #if !defined (CRTSCTS)
514 if (tcgetattr(fd, &tios) < 0) {
515 syslog(LOG_ERR, "tcgetattr: %m");
521 if (ioctl (fd, TCGETX, &tiox) < 0) {
524 syslog (LOG_ERR, "TCGETX: %m");
533 ioctl(fd, TIOCGWINSZ, &wsinfo);
536 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
539 tios.c_cflag |= CRTSCTS;
540 else if (crtscts < 0)
541 tios.c_cflag &= ~CRTSCTS;
543 if (crtscts != 0 && !termiox_ok) {
544 syslog(LOG_ERR, "Can't set RTS/CTS flow control");
545 } else if (crtscts > 0) {
546 tiox.x_hflag |= RTSXOFF|CTSXON;
547 } else if (crtscts < 0) {
548 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
552 tios.c_cflag |= CS8 | CREAD | HUPCL;
554 tios.c_cflag |= CLOCAL;
555 tios.c_iflag = IGNBRK | IGNPAR;
559 tios.c_cc[VTIME] = 0;
562 tios.c_iflag |= IXON | IXOFF;
563 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
564 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
567 speed = translate_speed(inspeed);
569 cfsetospeed(&tios, speed);
570 cfsetispeed(&tios, speed);
572 speed = cfgetospeed(&tios);
574 * We can't proceed if the serial port speed is 0,
575 * since that implies that the serial port is disabled.
578 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
584 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
585 syslog(LOG_ERR, "tcsetattr: %m");
590 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
591 syslog (LOG_ERR, "TCSETXF: %m");
595 baud_rate = inspeed = baud_rate_of(speed);
600 * restore_tty - restore the terminal to the saved settings.
607 if (!default_device) {
609 * Turn off echoing, because otherwise we can get into
610 * a loop with the tty and the modem echoing to each other.
611 * We presume we are the sole user of this tty device, so
612 * when we close it, it will revert to its defaults anyway.
614 inittermios.c_lflag &= ~(ECHO | ECHONL);
616 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
617 if (!hungup && errno != ENXIO)
618 syslog(LOG_WARNING, "tcsetattr: %m");
620 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
621 if (!hungup && errno != ENXIO)
622 syslog (LOG_ERR, "TCSETXF: %m");
625 ioctl(fd, TIOCSWINSZ, &wsinfo);
631 * hangup_modem - hang up the modem by clearing DTR.
633 void hangup_modem(int ttyfd)
639 * setdtr - control the DTR line on the serial port.
640 * This is called from die(), so it shouldn't call die().
646 int modembits = TIOCM_DTR;
648 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
652 * open_loopback - open the device we use for getting packets
653 * in demand mode. Under Solaris 2, we use our existing fd
662 * output - Output PPP packet.
675 log_packet(p, len, "sent ", LOG_DEBUG);
678 data.buf = (caddr_t) p;
680 while (putmsg(pppfd, NULL, &data, 0) < 0) {
681 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
683 syslog(LOG_ERR, "Couldn't send packet: %m");
687 pfd.events = POLLOUT;
688 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
694 * wait_input - wait until there is data available on fd,
695 * for the length of time specified by *timo (indefinite
700 struct timeval *timo;
705 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
707 pfd.events = POLLIN | POLLPRI | POLLHUP;
708 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
709 syslog(LOG_ERR, "poll: %m");
715 * wait_loop_output - wait until there is data available on the
716 * loopback, for the length of time specified by *timo (indefinite
720 wait_loop_output(timo)
721 struct timeval *timo;
727 * wait_time - wait for a given length of time or until a
728 * signal is received.
732 struct timeval *timo;
736 n = select(0, NULL, NULL, NULL, timo);
737 if (n < 0 && errno != EINTR) {
738 syslog(LOG_ERR, "select: %m");
745 * read_packet - get a PPP packet from the serial device.
751 struct strbuf ctrl, data;
753 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
756 data.maxlen = PPP_MRU + PPP_HDRLEN;
757 data.buf = (caddr_t) buf;
758 ctrl.maxlen = sizeof(ctrlbuf);
759 ctrl.buf = (caddr_t) ctrlbuf;
761 len = getmsg(pppfd, &ctrl, &data, &flags);
763 if (errno == EAGAIN || errno == EINTR)
765 syslog(LOG_ERR, "Error reading packet: %m");
773 * Got a M_PROTO or M_PCPROTO message. Interpret it
774 * as a DLPI primitive??
777 syslog(LOG_DEBUG, "got dlpi prim 0x%x, len=%d",
778 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
784 * get_loop_output - get outgoing packets from the ppp device,
785 * and detect when we want to bring the real link up.
786 * Return value is 1 if we need to bring up the link, 0 otherwise.
794 while ((len = read_packet(inpacket_buf)) > 0) {
795 if (loop_frame(inpacket_buf, len))
802 * ppp_send_config - configure the transmit characteristics of
806 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
815 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
816 if (hungup && errno == ENXIO)
818 syslog(LOG_ERR, "Couldn't set MTU: %m");
821 /* can't set these if we don't have a stream attached below /dev/ppp */
822 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
823 syslog(LOG_ERR, "Couldn't set transmit ACCM: %m");
825 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
826 cf[1] = COMP_PROT | COMP_AC;
827 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
828 syslog(LOG_ERR, "Couldn't set prot/AC compression: %m");
832 /* set the MTU for IP as well */
833 memset(&ifr, 0, sizeof(ifr));
834 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
835 ifr.ifr_metric = link_mtu;
836 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
837 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
842 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
845 ppp_set_xaccm(unit, accm)
850 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
851 if (!hungup || errno != ENXIO)
852 syslog(LOG_WARNING, "Couldn't set extended ACCM: %m");
857 * ppp_recv_config - configure the receive-side characteristics of
861 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
869 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
870 if (hungup && errno == ENXIO)
872 syslog(LOG_ERR, "Couldn't set MRU: %m");
875 /* can't set these if we don't have a stream attached below /dev/ppp */
876 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
877 syslog(LOG_ERR, "Couldn't set receive ACCM: %m");
879 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
880 cf[1] = DECOMP_PROT | DECOMP_AC;
881 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
882 syslog(LOG_ERR, "Couldn't set prot/AC decompression: %m");
888 * ccp_test - ask kernel whether a given compression method
889 * is acceptable for use.
892 ccp_test(unit, opt_ptr, opt_len, for_transmit)
893 int unit, opt_len, for_transmit;
896 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
897 opt_ptr, opt_len, 0) >= 0)
899 return (errno == ENOSR)? 0: -1;
903 * ccp_flags_set - inform kernel about the current state of CCP.
906 ccp_flags_set(unit, isopen, isup)
907 int unit, isopen, isup;
911 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
912 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
913 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
914 if (!hungup || errno != ENXIO)
915 syslog(LOG_ERR, "Couldn't set kernel CCP state: %m");
920 * get_idle_time - return how long the link has been idle.
927 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
932 * set_filters - transfer the pass and active filters to the kernel.
935 set_filters(pass, active)
936 struct bpf_program *pass, *active;
940 if (pass->bf_len > 0) {
941 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
942 sizeof(struct bpf_program), 0) < 0) {
943 syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
947 if (active->bf_len > 0) {
948 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
949 sizeof(struct bpf_program), 0) < 0) {
950 syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
959 * ccp_fatal_error - returns 1 if decompression was disabled as a
960 * result of an error detected after decompression of a packet,
961 * 0 otherwise. This is necessary because of patent nonsense.
964 ccp_fatal_error(unit)
970 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
971 if (errno != ENXIO && errno != EINVAL)
972 syslog(LOG_ERR, "Couldn't get compression flags: %m");
975 return cf[0] & CCP_FATALERROR;
979 * sifvjcomp - config tcp header compression
982 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
983 int u, vjcomp, xcidcomp, xmaxcid;
989 maxcid[0] = xcidcomp;
990 maxcid[1] = 15; /* XXX should be rmaxcid */
991 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
992 syslog(LOG_ERR, "Couldn't initialize VJ compression: %m");
996 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
997 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
998 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
999 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1001 syslog(LOG_ERR, "Couldn't enable VJ compression: %m");
1008 * sifup - Config the interface up and enable IP packets to pass.
1016 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1017 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1018 syslog(LOG_ERR, "Couldn't mark interface up (get): %m");
1021 ifr.ifr_flags |= IFF_UP;
1022 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1023 syslog(LOG_ERR, "Couldn't mark interface up (set): %m");
1031 * sifdown - Config the interface down and disable IP.
1041 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1042 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1043 syslog(LOG_ERR, "Couldn't mark interface down (get): %m");
1046 ifr.ifr_flags &= ~IFF_UP;
1047 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1048 syslog(LOG_ERR, "Couldn't mark interface down (set): %m");
1056 * sifnpmode - Set the mode for handling packets for a given NP.
1059 sifnpmode(u, proto, mode)
1067 npi[1] = (int) mode;
1068 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1069 syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
1075 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1078 * sifaddr - Config the interface IP addresses and netmask.
1088 memset(&ifr, 0, sizeof(ifr));
1089 strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1090 ifr.ifr_addr.sa_family = AF_INET;
1091 INET_ADDR(ifr.ifr_addr) = m;
1092 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1093 syslog(LOG_ERR, "Couldn't set IP netmask: %m");
1096 ifr.ifr_addr.sa_family = AF_INET;
1097 INET_ADDR(ifr.ifr_addr) = o;
1098 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1099 syslog(LOG_ERR, "Couldn't set local IP address: %m");
1104 * On some systems, we have to explicitly set the point-to-point
1105 * flag bit before we can set a destination address.
1107 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1108 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1109 ifr.ifr_flags |= IFF_POINTOPOINT;
1110 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1111 syslog(LOG_ERR, "Couldn't mark interface pt-to-pt: %m");
1115 ifr.ifr_dstaddr.sa_family = AF_INET;
1116 INET_ADDR(ifr.ifr_dstaddr) = h;
1117 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1118 syslog(LOG_ERR, "Couldn't set remote IP address: %m");
1121 #if 0 /* now done in ppp_send_config */
1122 ifr.ifr_metric = link_mtu;
1123 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1124 syslog(LOG_ERR, "Couldn't set IP MTU: %m");
1132 * cifaddr - Clear the interface IP addresses, and delete routes
1133 * through the interface if possible.
1140 #if defined(__USLC__) /* was: #if 0 */
1141 cifroute(unit, ouraddr, hisaddr);
1143 syslog(LOG_NOTICE, "Removing ppp interface unit");
1144 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1145 syslog(LOG_ERR, "Can't remove ppp interface unit: %m");
1155 * sifdefaultroute - assign a default route through the address given.
1158 sifdefaultroute(u, l, g)
1164 #if defined(__USLC__)
1165 g = l; /* use the local address as gateway */
1167 memset(&rt, 0, sizeof(rt));
1168 rt.rt_dst.sa_family = AF_INET;
1169 INET_ADDR(rt.rt_dst) = 0;
1170 rt.rt_gateway.sa_family = AF_INET;
1171 INET_ADDR(rt.rt_gateway) = g;
1172 rt.rt_flags = RTF_GATEWAY;
1174 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1175 syslog(LOG_ERR, "Can't add default route: %m");
1179 default_route_gateway = g;
1184 * cifdefaultroute - delete a default route through the address given.
1187 cifdefaultroute(u, l, g)
1193 #if defined(__USLC__)
1194 g = l; /* use the local address as gateway */
1196 memset(&rt, 0, sizeof(rt));
1197 rt.rt_dst.sa_family = AF_INET;
1198 INET_ADDR(rt.rt_dst) = 0;
1199 rt.rt_gateway.sa_family = AF_INET;
1200 INET_ADDR(rt.rt_gateway) = g;
1201 rt.rt_flags = RTF_GATEWAY;
1203 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1204 syslog(LOG_ERR, "Can't delete default route: %m");
1208 default_route_gateway = 0;
1213 * sifproxyarp - Make a proxy ARP entry for the peer.
1216 sifproxyarp(unit, hisaddr)
1220 struct arpreq arpreq;
1222 memset(&arpreq, 0, sizeof(arpreq));
1223 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1226 arpreq.arp_pa.sa_family = AF_INET;
1227 INET_ADDR(arpreq.arp_pa) = hisaddr;
1228 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1229 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1230 syslog(LOG_ERR, "Couldn't set proxy ARP entry: %m");
1234 proxy_arp_addr = hisaddr;
1239 * cifproxyarp - Delete the proxy ARP entry for the peer.
1242 cifproxyarp(unit, hisaddr)
1246 struct arpreq arpreq;
1248 memset(&arpreq, 0, sizeof(arpreq));
1249 arpreq.arp_pa.sa_family = AF_INET;
1250 INET_ADDR(arpreq.arp_pa) = hisaddr;
1251 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1252 syslog(LOG_ERR, "Couldn't delete proxy ARP entry: %m");
1261 * get_ether_addr - get the hardware address of an interface on the
1262 * the same subnet as ipaddr.
1267 get_ether_addr(ipaddr, hwaddr)
1269 struct sockaddr *hwaddr;
1271 struct ifreq *ifr, *ifend, ifreq;
1274 u_int32_t ina, mask;
1277 * Scan through the system's network interfaces.
1280 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1283 ifc.ifc_len = nif * sizeof(struct ifreq);
1284 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1285 if (ifc.ifc_buf == 0)
1287 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1288 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1292 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1293 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1294 if (ifr->ifr_addr.sa_family != AF_INET)
1297 * Check that the interface is up, and not point-to-point or loopback.
1299 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1300 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1302 if ((ifreq.ifr_flags &
1303 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1304 != (IFF_UP|IFF_BROADCAST))
1307 * Get its netmask and check that it's on the right subnet.
1309 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1311 ina = INET_ADDR(ifr->ifr_addr);
1312 mask = INET_ADDR(ifreq.ifr_addr);
1313 if ((ipaddr & mask) == (ina & mask))
1318 syslog(LOG_WARNING, "No suitable interface found for proxy ARP");
1323 syslog(LOG_INFO, "found interface %s for proxy ARP", ifr->ifr_name);
1324 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
1325 syslog(LOG_ERR, "Couldn't get hardware address for %s", ifr->ifr_name);
1335 * get_hw_addr - obtain the hardware address for a named interface.
1338 get_hw_addr(name, ina, hwaddr)
1341 struct sockaddr *hwaddr;
1344 /* New way - get the address by doing an arp request. */
1348 s = socket(AF_INET, SOCK_DGRAM, 0);
1351 memset(&req, 0, sizeof(req));
1352 req.arp_pa.sa_family = AF_INET;
1353 INET_ADDR(req.arp_pa) = ina;
1354 if (ioctl(s, SIOCGARP, &req) < 0) {
1355 syslog(LOG_ERR, "Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
1358 *hwaddr = req.arp_ha;
1359 hwaddr->sa_family = AF_UNSPEC;
1363 int unit, iffd, adrlen;
1364 unsigned char *adrp;
1367 union DL_primitives prim;
1372 * We have to open the device and ask it for its hardware address.
1373 * First split apart the device name and unit.
1375 strcpy(ifdev, "/dev/");
1376 q = ifdev + 5; /* strlen("/dev/") */
1377 while (*name != 0 && !isdigit(*name))
1383 * Open the device and do a DLPI attach and phys_addr_req.
1385 iffd = open(ifdev, O_RDWR);
1387 syslog(LOG_ERR, "Can't open %s: %m", ifdev);
1390 if (dlpi_attach(iffd, unit) < 0
1391 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1392 || dlpi_info_req(iffd) < 0
1393 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1398 adrlen = reply.prim.info_ack.dl_addr_length;
1399 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1400 #if DL_CURRENT_VERSION >= 2
1401 if (reply.prim.info_ack.dl_sap_length < 0)
1402 adrlen += reply.prim.info_ack.dl_sap_length;
1404 adrp += reply.prim.info_ack.dl_sap_length;
1406 hwaddr->sa_family = AF_UNSPEC;
1407 memcpy(hwaddr->sa_data, adrp, adrlen);
1414 dlpi_attach(fd, ppa)
1417 dl_attach_req_t req;
1420 req.dl_primitive = DL_ATTACH_REQ;
1422 buf.len = sizeof(req);
1423 buf.buf = (void *) &req;
1424 return putmsg(fd, &buf, NULL, RS_HIPRI);
1434 req.dl_primitive = DL_INFO_REQ;
1435 buf.len = sizeof(req);
1436 buf.buf = (void *) &req;
1437 return putmsg(fd, &buf, NULL, RS_HIPRI);
1441 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1442 union DL_primitives *reply;
1443 int fd, expected_prim, maxlen;
1450 * Use poll to wait for a message with a timeout.
1453 pfd.events = POLLIN | POLLPRI;
1455 n = poll(&pfd, 1, 1000);
1456 } while (n == -1 && errno == EINTR);
1463 buf.maxlen = maxlen;
1464 buf.buf = (void *) reply;
1466 if (getmsg(fd, &buf, NULL, &flags) < 0)
1469 if (buf.len < sizeof(ulong)) {
1471 syslog(LOG_DEBUG, "dlpi response short (len=%d)\n", buf.len);
1475 if (reply->dl_primitive == expected_prim)
1479 if (reply->dl_primitive == DL_ERROR_ACK) {
1480 syslog(LOG_DEBUG, "dlpi error %d (unix errno %d) for prim %x\n",
1481 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1482 reply->error_ack.dl_error_primitive);
1484 syslog(LOG_DEBUG, "dlpi unexpected response prim %x\n",
1485 reply->dl_primitive);
1493 * Return user specified netmask, modified by any mask we might determine
1494 * for address `addr' (in network byte order).
1495 * Here we scan through the system's list of interfaces, looking for
1496 * any non-point-to-point interfaces which might appear to be on the same
1497 * network as `addr'. If we find any, we OR in their netmask to the
1498 * user-specified netmask.
1504 u_int32_t mask, nmask, ina;
1505 struct ifreq *ifr, *ifend, ifreq;
1510 if (IN_CLASSA(addr)) /* determine network mask for address class */
1511 nmask = IN_CLASSA_NET;
1512 else if (IN_CLASSB(addr))
1513 nmask = IN_CLASSB_NET;
1515 nmask = IN_CLASSC_NET;
1516 /* class D nets are disallowed by bad_ip_adrs */
1517 mask = netmask | htonl(nmask);
1520 * Scan through the system's network interfaces.
1523 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1526 ifc.ifc_len = nif * sizeof(struct ifreq);
1527 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1528 if (ifc.ifc_buf == 0)
1530 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1531 syslog(LOG_WARNING, "Couldn't get system interface list: %m");
1535 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1536 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1538 * Check the interface's internet address.
1540 if (ifr->ifr_addr.sa_family != AF_INET)
1542 ina = INET_ADDR(ifr->ifr_addr);
1543 if ((ntohl(ina) & nmask) != (addr & nmask))
1546 * Check that the interface is up, and not point-to-point or loopback.
1548 strncpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1549 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1551 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1555 * Get its netmask and OR it into our mask.
1557 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1559 mask |= INET_ADDR(ifreq.ifr_addr);
1567 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1570 logwtmp(line, name, host)
1571 const char *line, *name, *host;
1573 static struct utmpx utmpx;
1577 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1578 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1579 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1580 utmpx.ut_pid = getpid();
1581 utmpx.ut_type = USER_PROCESS;
1583 utmpx.ut_type = DEAD_PROCESS;
1585 gettimeofday(&utmpx.ut_tv, NULL);
1586 updwtmpx("/var/adm/wtmpx", &utmpx);
1590 * get_host_seed - return the serial number of this machine.
1597 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1598 syslog(LOG_ERR, "sysinfo: %m");
1601 return (int) strtoul(buf, NULL, 16);
1605 strioctl(fd, cmd, ptr, ilen, olen)
1606 int fd, cmd, ilen, olen;
1609 struct strioctl str;
1615 if (ioctl(fd, I_STR, &str) == -1)
1617 if (str.ic_len != olen)
1618 syslog(LOG_DEBUG, "strioctl: expected %d bytes, got %d for cmd %x\n",
1619 olen, str.ic_len, cmd);
1624 * lock - create a lock file for the named lock device
1627 #define LOCK_PREFIX "/var/spool/locks/LK."
1628 static char lock_file[40]; /* name of lock file created */
1638 if (stat(dev, &sbuf) < 0) {
1639 syslog(LOG_ERR, "Can't get device number for %s: %m", dev);
1642 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1643 syslog(LOG_ERR, "Can't lock %s: not a character device", dev);
1646 sprintf(lock_file, "%s%03d.%03d.%03d", LOCK_PREFIX, major(sbuf.st_dev),
1647 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1649 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1651 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1652 /* Read the lock file to find out who has the device locked */
1653 n = read(fd, ascii_pid, 11);
1655 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1659 pid = atoi(ascii_pid);
1660 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1661 /* pid no longer exists - remove the lock file */
1662 if (unlink(lock_file) == 0) {
1664 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1668 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1671 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1676 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1681 sprintf(ascii_pid, "%10d\n", getpid());
1682 write(fd, ascii_pid, 11);
1689 * unlock - remove our lockfile
1702 * cifroute - delete a route through the addresses given.
1705 cifroute(u, our, his)
1711 memset(&rt, 0, sizeof(rt));
1712 rt.rt_dst.sa_family = AF_INET;
1713 INET_ADDR(rt.rt_dst) = his;
1714 rt.rt_gateway.sa_family = AF_INET;
1715 INET_ADDR(rt.rt_gateway) = our;
1716 rt.rt_flags = RTF_HOST;
1718 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1719 syslog(LOG_ERR, "Can't delete route: %m");
1727 * have_route_to - determine if the system has a route to the specified
1728 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
1730 #ifndef T_CURRENT /* needed for Solaris 2.5 */
1731 #define T_CURRENT MI_T_CURRENT
1738 int fd, r, flags, i;
1740 struct T_optmgmt_req req;
1744 struct T_optmgmt_ack ack;
1745 unsigned char space[64];
1748 struct strbuf cbuf, dbuf;
1750 mib2_ipRouteEntry_t routes[8];
1751 mib2_ipRouteEntry_t *rp;
1753 fd = open("/dev/ip", O_RDWR);
1755 syslog(LOG_WARNING, "have_route_to: couldn't open /dev/ip: %m");
1759 req.req.PRIM_type = T_OPTMGMT_REQ;
1760 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
1761 req.req.OPT_length = sizeof(req.hdr);
1762 req.req.MGMT_flags = T_CURRENT;
1764 req.hdr.level = MIB2_IP;
1768 cbuf.buf = (char *) &req;
1769 cbuf.len = sizeof(req);
1771 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
1772 syslog(LOG_WARNING, "have_route_to: putmsg: %m");
1778 cbuf.buf = (char *) &ack;
1779 cbuf.maxlen = sizeof(ack);
1780 dbuf.buf = (char *) routes;
1781 dbuf.maxlen = sizeof(routes);
1783 r = getmsg(fd, &cbuf, &dbuf, &flags);
1785 syslog(LOG_WARNING, "have_route_to: getmsg: %m");
1790 if (cbuf.len < sizeof(struct T_optmgmt_ack)
1791 || ack.ack.PRIM_type != T_OPTMGMT_ACK
1792 || ack.ack.MGMT_flags != T_SUCCESS
1793 || ack.ack.OPT_length < sizeof(struct opthdr)) {
1794 syslog(LOG_DEBUG, "have_route_to: bad message len=%d prim=%d",
1795 cbuf.len, ack.ack.PRIM_type);
1800 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
1801 if (rh->level == 0 && rh->name == 0)
1803 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
1804 while (r == MOREDATA)
1805 r = getmsg(fd, NULL, &dbuf, &flags);
1810 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
1811 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
1812 if (rp->ipRouteMask != ~0) {
1813 syslog(LOG_DEBUG, "have_route_to: dest=%x gw=%x mask=%x\n",
1814 rp->ipRouteDest, rp->ipRouteNextHop,
1816 if (((addr ^ rp->ipRouteDest) && rp->ipRouteMask) == 0)
1822 r = getmsg(fd, NULL, &dbuf, &flags);