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 1.25 1999/03/16 02:57:07 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/sysmacros.h>
53 #include <sys/systeminfo.h>
56 #include <sys/mkdev.h>
58 #include <net/if_arp.h>
59 #include <net/route.h>
60 #include <net/ppp_defs.h>
61 #include <net/pppio.h>
62 #include <netinet/in.h>
63 #include <sys/tihdr.h>
64 #include <sys/tiuser.h>
65 #include <inet/common.h>
66 #include <inet/mib2.h>
71 static int fdmuxid = -1;
73 static int ipmuxid = -1;
75 static int restore_term;
76 static struct termios inittermios;
78 static struct termiox inittermiox;
79 static int termiox_ok;
81 static struct winsize wsinfo; /* Initial window size info */
82 static pid_t tty_sid; /* original session ID for terminal */
84 extern u_char inpacket_buf[]; /* borrowed from main.c */
86 #define MAX_POLLFDS 32
87 static struct pollfd pollfds[MAX_POLLFDS];
90 static int link_mtu, link_mru;
93 static int tty_nmodules;
94 static char tty_modules[NMODULES][FMNAMESZ+1];
96 static int if_is_up; /* Interface has been marked up */
97 static u_int32_t remote_addr; /* IP address of peer */
98 static u_int32_t default_route_gateway; /* Gateway for default route added */
99 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
101 /* Prototypes for procedures local to this file. */
102 static int translate_speed __P((int));
103 static int baud_rate_of __P((int));
104 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
105 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
106 static int dlpi_attach __P((int, int));
107 static int dlpi_info_req __P((int));
108 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
109 static int strioctl __P((int, int, void *, int, int));
113 * sys_init - System-dependent initialization.
122 union DL_primitives prim;
127 ipfd = open("/dev/ip", O_RDWR, 0);
129 fatal("Couldn't open IP device: %m");
132 tty_sid = getsid((pid_t)0);
134 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
136 fatal("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 fatal("Can't create new PPP interface: %m");
147 * Open the ppp device again and link it under the ip multiplexor.
148 * IP will assign a unit number which hopefully is the same as ifunit.
149 * I don't know any way to be certain they will be the same. :-(
151 ifd = open("/dev/ppp", O_RDWR, 0);
153 fatal("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) {
161 fatal("Can't push IP module: %m");
164 if (dlpi_attach(ifd, ifunit) < 0 ||
165 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
167 fatal("Can't attach to ppp%d: %m", ifunit);
170 ipmuxid = ioctl(ipfd, I_LINK, ifd);
173 fatal("Can't link PPP device to IP: %m");
176 /* Set the interface name for the link. */
177 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
178 ifr.ifr_metric = ipmuxid;
179 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
180 fatal("Can't set interface name %s: %m", ifr.ifr_name);
187 * sys_cleanup - restore any system state we modified before exiting:
188 * mark the interface down, delete default route and/or proxy arp entry.
189 * This should call die() because it's called from die().
198 if (default_route_gateway)
199 cifdefaultroute(0, default_route_gateway, default_route_gateway);
201 cifproxyarp(0, proxy_arp_addr);
205 * sys_close - Clean up in a child process before execing.
216 * sys_check_options - check the options that the user specified
226 * daemon - Detach us from controlling terminal session.
229 daemon(nochdir, noclose)
230 int nochdir, noclose;
234 if ((pid = fork()) < 0)
237 exit(0); /* parent dies */
242 fclose(stdin); /* don't need stdin, stdout, stderr */
250 * ppp_available - check whether the system has any ppp interfaces
257 return stat("/dev/ppp", &buf) >= 0;
261 * establish_ppp - Turn the serial port into a ppp interface.
269 /* Pop any existing modules off the tty stream. */
271 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
272 || ioctl(fd, I_POP, 0) < 0)
276 /* Push the async hdlc module and the compressor module. */
277 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0)
278 fatal("Couldn't push PPP Async HDLC module: %m");
279 if (kdebugflag & 4) {
280 i = PPPDBG_LOG + PPPDBG_AHDLC;
281 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
283 if (ioctl(fd, I_PUSH, "ppp_comp") < 0)
284 error("Couldn't push PPP compression module: %m");
285 if (kdebugflag & 2) {
286 i = PPPDBG_LOG + PPPDBG_COMP;
287 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
290 /* Link the serial port under the PPP multiplexor. */
291 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0)
292 fatal("Can't link tty to PPP mux: %m");
296 * restore_loop - reattach the ppp unit to the loopback.
297 * This doesn't need to do anything because disestablish_ppp does it.
305 * disestablish_ppp - Restore the serial port to normal operation.
306 * It attempts to reconstruct the stream with the previously popped
307 * modules. This shouldn't call die() because it's called from die().
316 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
318 error("Can't unlink tty from PPP mux: %m");
323 while (ioctl(fd, I_POP, 0) >= 0)
325 for (i = tty_nmodules - 1; i >= 0; --i)
326 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
327 error("Couldn't restore tty module %s: %m",
330 if (hungup && default_device && tty_sid > 0) {
332 * If we have received a hangup, we need to send a SIGHUP
333 * to the terminal's controlling process. The reason is
334 * that the original stream head for the terminal hasn't
335 * seen the M_HANGUP message (it went up through the ppp
336 * driver to the stream head for our fd to /dev/ppp).
338 kill(tty_sid, SIGHUP);
344 * Check whether the link seems not to be 8-bit clean.
352 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
357 s = "bit 7 set to 1";
360 s = "bit 7 set to 0";
370 warn("Serial link is not 8-bit clean:");
371 warn("All received characters had %s", s);
376 * List of valid speeds.
379 int speed_int, speed_val;
451 * Translate from bits/second to a speed_t.
457 struct speed *speedp;
461 for (speedp = speeds; speedp->speed_int; speedp++)
462 if (bps == speedp->speed_int)
463 return speedp->speed_val;
464 warn("speed %d not supported", bps);
469 * Translate from a speed_t to bits/second.
475 struct speed *speedp;
479 for (speedp = speeds; speedp->speed_int; speedp++)
480 if (speed == speedp->speed_val)
481 return speedp->speed_int;
486 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
487 * at the requested speed, etc. If `local' is true, set CLOCAL
488 * regardless of whether the modem option was specified.
491 set_up_tty(fd, local)
496 #if !defined (CRTSCTS)
500 if (tcgetattr(fd, &tios) < 0)
501 fatal("tcgetattr: %m");
505 if (ioctl (fd, TCGETX, &tiox) < 0) {
517 ioctl(fd, TIOCGWINSZ, &wsinfo);
520 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
523 tios.c_cflag |= CRTSCTS;
524 else if (crtscts < 0)
525 tios.c_cflag &= ~CRTSCTS;
527 if (crtscts != 0 && !termiox_ok) {
528 error("Can't set RTS/CTS flow control");
529 } else if (crtscts > 0) {
530 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 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
565 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
566 fatal("tcsetattr: %m");
569 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
570 error("TCSETXF: %m");
574 baud_rate = inspeed = baud_rate_of(speed);
579 * restore_tty - restore the terminal to the saved settings.
586 if (!default_device) {
588 * Turn off echoing, because otherwise we can get into
589 * a loop with the tty and the modem echoing to each other.
590 * We presume we are the sole user of this tty device, so
591 * when we close it, it will revert to its defaults anyway.
593 inittermios.c_lflag &= ~(ECHO | ECHONL);
595 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
596 if (!hungup && errno != ENXIO)
597 warn("tcsetattr: %m");
599 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
600 if (!hungup && errno != ENXIO)
601 error("TCSETXF: %m");
604 ioctl(fd, TIOCSWINSZ, &wsinfo);
610 * setdtr - control the DTR line on the serial port.
611 * This is called from die(), so it shouldn't call die().
617 int modembits = TIOCM_DTR;
619 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
623 * open_loopback - open the device we use for getting packets
624 * in demand mode. Under Solaris 2, we use our existing fd
633 * output - Output PPP packet.
646 dbglog("sent %P", p, len);
649 data.buf = (caddr_t) p;
651 while (putmsg(pppfd, NULL, &data, 0) < 0) {
652 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
654 error("Couldn't send packet: %m");
658 pfd.events = POLLOUT;
659 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
665 * wait_input - wait until there is data available,
666 * for the length of time specified by *timo (indefinite
671 struct timeval *timo;
675 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
676 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
681 * add_fd - add an fd to the set that wait_input waits for.
687 for (n = 0; n < n_pollfds; ++n)
688 if (pollfds[n].fd == fd)
690 if (n_pollfds < MAX_POLLFDS) {
691 pollfds[n_pollfds].fd = fd;
692 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
695 error("Too many inputs!");
699 * remove_fd - remove an fd from the set that wait_input waits for.
701 void remove_fd(int fd)
705 for (n = 0; n < n_pollfds; ++n) {
706 if (pollfds[n].fd == fd) {
707 while (++n < n_pollfds)
708 pollfds[n-1] = pollfds[n];
717 * wait_loop_output - wait until there is data available on the
718 * loopback, for the length of time specified by *timo (indefinite
722 wait_loop_output(timo)
723 struct timeval *timo;
729 * wait_time - wait for a given length of time or until a
730 * signal is received.
734 struct timeval *timo;
738 n = select(0, NULL, NULL, NULL, timo);
739 if (n < 0 && errno != EINTR)
746 * read_packet - get a PPP packet from the serial device.
752 struct strbuf ctrl, data;
754 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
757 data.maxlen = PPP_MRU + PPP_HDRLEN;
758 data.buf = (caddr_t) buf;
759 ctrl.maxlen = sizeof(ctrlbuf);
760 ctrl.buf = (caddr_t) ctrlbuf;
762 len = getmsg(pppfd, &ctrl, &data, &flags);
764 if (errno == EAGAIN || errno == EINTR)
766 fatal("Error reading packet: %m");
773 * Got a M_PROTO or M_PCPROTO message. Interpret it
774 * as a DLPI primitive??
777 dbglog("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 error("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 error("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 error("Couldn't set prot/AC compression: %m");
832 /* set the MTU for IP as well */
833 memset(&ifr, 0, sizeof(ifr));
834 strlcpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
835 ifr.ifr_metric = link_mtu;
836 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
837 error("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 warn("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 error("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 error("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 error("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 error("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 error("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 error("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 error("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 error("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 error("Couldn't enable VJ compression: %m");
1008 * sifup - Config the interface up and enable IP packets to pass.
1016 strlcpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
1017 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1018 error("Couldn't mark interface up (get): %m");
1021 ifr.ifr_flags |= IFF_UP;
1022 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1023 error("Couldn't mark interface up (set): %m");
1031 * sifdown - Config the interface down and disable IP.
1041 strlcpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
1042 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1043 error("Couldn't mark interface down (get): %m");
1046 ifr.ifr_flags &= ~IFF_UP;
1047 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1048 error("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 error("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 strlcpy(ifr.ifr_name, sizeof(ifr.ifr_name), ifname);
1090 ifr.ifr_addr.sa_family = AF_INET;
1091 INET_ADDR(ifr.ifr_addr) = m;
1092 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1093 error("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 error("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 error("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 error("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 error("Couldn't set IP MTU: %m");
1133 * cifaddr - Clear the interface IP addresses, and delete routes
1134 * through the interface if possible.
1141 #if defined(__USLC__) /* was: #if 0 */
1142 cifroute(unit, ouraddr, hisaddr);
1144 notice("Removing ppp interface unit");
1145 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1146 error("Can't remove ppp interface unit: %m");
1157 * sifdefaultroute - assign a default route through the address given.
1160 sifdefaultroute(u, l, g)
1166 #if defined(__USLC__)
1167 g = l; /* use the local address as gateway */
1169 memset(&rt, 0, sizeof(rt));
1170 rt.rt_dst.sa_family = AF_INET;
1171 INET_ADDR(rt.rt_dst) = 0;
1172 rt.rt_gateway.sa_family = AF_INET;
1173 INET_ADDR(rt.rt_gateway) = g;
1174 rt.rt_flags = RTF_GATEWAY;
1176 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1177 error("Can't add default route: %m");
1181 default_route_gateway = g;
1186 * cifdefaultroute - delete a default route through the address given.
1189 cifdefaultroute(u, l, g)
1195 #if defined(__USLC__)
1196 g = l; /* use the local address as gateway */
1198 memset(&rt, 0, sizeof(rt));
1199 rt.rt_dst.sa_family = AF_INET;
1200 INET_ADDR(rt.rt_dst) = 0;
1201 rt.rt_gateway.sa_family = AF_INET;
1202 INET_ADDR(rt.rt_gateway) = g;
1203 rt.rt_flags = RTF_GATEWAY;
1205 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1206 error("Can't delete default route: %m");
1210 default_route_gateway = 0;
1215 * sifproxyarp - Make a proxy ARP entry for the peer.
1218 sifproxyarp(unit, hisaddr)
1222 struct arpreq arpreq;
1224 memset(&arpreq, 0, sizeof(arpreq));
1225 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1228 arpreq.arp_pa.sa_family = AF_INET;
1229 INET_ADDR(arpreq.arp_pa) = hisaddr;
1230 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1231 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1232 error("Couldn't set proxy ARP entry: %m");
1236 proxy_arp_addr = hisaddr;
1241 * cifproxyarp - Delete the proxy ARP entry for the peer.
1244 cifproxyarp(unit, hisaddr)
1248 struct arpreq arpreq;
1250 memset(&arpreq, 0, sizeof(arpreq));
1251 arpreq.arp_pa.sa_family = AF_INET;
1252 INET_ADDR(arpreq.arp_pa) = hisaddr;
1253 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1254 error("Couldn't delete proxy ARP entry: %m");
1263 * get_ether_addr - get the hardware address of an interface on the
1264 * the same subnet as ipaddr.
1269 get_ether_addr(ipaddr, hwaddr)
1271 struct sockaddr *hwaddr;
1273 struct ifreq *ifr, *ifend, ifreq;
1276 u_int32_t ina, mask;
1279 * Scan through the system's network interfaces.
1282 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1285 ifc.ifc_len = nif * sizeof(struct ifreq);
1286 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1287 if (ifc.ifc_buf == 0)
1289 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1290 warn("Couldn't get system interface list: %m");
1294 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1295 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1296 if (ifr->ifr_addr.sa_family != AF_INET)
1299 * Check that the interface is up, and not point-to-point or loopback.
1301 strlcpy(ifreq.ifr_name, sizeof(ifreq.ifr_name), ifr->ifr_name);
1302 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1304 if ((ifreq.ifr_flags &
1305 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1306 != (IFF_UP|IFF_BROADCAST))
1309 * Get its netmask and check that it's on the right subnet.
1311 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1313 ina = INET_ADDR(ifr->ifr_addr);
1314 mask = INET_ADDR(ifreq.ifr_addr);
1315 if ((ipaddr & mask) == (ina & mask))
1320 warn("No suitable interface found for proxy ARP");
1325 info("found interface %s for proxy ARP", ifr->ifr_name);
1326 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
1327 error("Couldn't get hardware address for %s", ifr->ifr_name);
1337 * get_hw_addr - obtain the hardware address for a named interface.
1340 get_hw_addr(name, ina, hwaddr)
1343 struct sockaddr *hwaddr;
1346 /* New way - get the address by doing an arp request. */
1350 s = socket(AF_INET, SOCK_DGRAM, 0);
1353 memset(&req, 0, sizeof(req));
1354 req.arp_pa.sa_family = AF_INET;
1355 INET_ADDR(req.arp_pa) = ina;
1356 if (ioctl(s, SIOCGARP, &req) < 0) {
1357 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
1360 *hwaddr = req.arp_ha;
1361 hwaddr->sa_family = AF_UNSPEC;
1365 int unit, iffd, adrlen;
1366 unsigned char *adrp;
1369 union DL_primitives prim;
1374 * We have to open the device and ask it for its hardware address.
1375 * First split apart the device name and unit.
1377 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
1378 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
1385 * Open the device and do a DLPI attach and phys_addr_req.
1387 iffd = open(ifdev, O_RDWR);
1389 error("Can't open %s: %m", ifdev);
1392 if (dlpi_attach(iffd, unit) < 0
1393 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1394 || dlpi_info_req(iffd) < 0
1395 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1400 adrlen = reply.prim.info_ack.dl_addr_length;
1401 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1402 #if DL_CURRENT_VERSION >= 2
1403 if (reply.prim.info_ack.dl_sap_length < 0)
1404 adrlen += reply.prim.info_ack.dl_sap_length;
1406 adrp += reply.prim.info_ack.dl_sap_length;
1408 hwaddr->sa_family = AF_UNSPEC;
1409 memcpy(hwaddr->sa_data, adrp, adrlen);
1416 dlpi_attach(fd, ppa)
1419 dl_attach_req_t req;
1422 req.dl_primitive = DL_ATTACH_REQ;
1424 buf.len = sizeof(req);
1425 buf.buf = (void *) &req;
1426 return putmsg(fd, &buf, NULL, RS_HIPRI);
1436 req.dl_primitive = DL_INFO_REQ;
1437 buf.len = sizeof(req);
1438 buf.buf = (void *) &req;
1439 return putmsg(fd, &buf, NULL, RS_HIPRI);
1443 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1444 union DL_primitives *reply;
1445 int fd, expected_prim, maxlen;
1452 * Use poll to wait for a message with a timeout.
1455 pfd.events = POLLIN | POLLPRI;
1457 n = poll(&pfd, 1, 1000);
1458 } while (n == -1 && errno == EINTR);
1465 buf.maxlen = maxlen;
1466 buf.buf = (void *) reply;
1468 if (getmsg(fd, &buf, NULL, &flags) < 0)
1471 if (buf.len < sizeof(ulong)) {
1473 dbglog("dlpi response short (len=%d)\n", buf.len);
1477 if (reply->dl_primitive == expected_prim)
1481 if (reply->dl_primitive == DL_ERROR_ACK) {
1482 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
1483 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1484 reply->error_ack.dl_error_primitive);
1486 dbglog("dlpi unexpected response prim %x\n",
1487 reply->dl_primitive);
1495 * Return user specified netmask, modified by any mask we might determine
1496 * for address `addr' (in network byte order).
1497 * Here we scan through the system's list of interfaces, looking for
1498 * any non-point-to-point interfaces which might appear to be on the same
1499 * network as `addr'. If we find any, we OR in their netmask to the
1500 * user-specified netmask.
1506 u_int32_t mask, nmask, ina;
1507 struct ifreq *ifr, *ifend, ifreq;
1512 if (IN_CLASSA(addr)) /* determine network mask for address class */
1513 nmask = IN_CLASSA_NET;
1514 else if (IN_CLASSB(addr))
1515 nmask = IN_CLASSB_NET;
1517 nmask = IN_CLASSC_NET;
1518 /* class D nets are disallowed by bad_ip_adrs */
1519 mask = netmask | htonl(nmask);
1522 * Scan through the system's network interfaces.
1525 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1528 ifc.ifc_len = nif * sizeof(struct ifreq);
1529 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1530 if (ifc.ifc_buf == 0)
1532 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1533 warn("Couldn't get system interface list: %m");
1537 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1538 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1540 * Check the interface's internet address.
1542 if (ifr->ifr_addr.sa_family != AF_INET)
1544 ina = INET_ADDR(ifr->ifr_addr);
1545 if ((ntohl(ina) & nmask) != (addr & nmask))
1548 * Check that the interface is up, and not point-to-point or loopback.
1550 strlcpy(ifreq.ifr_name, sizeof(ifreq.ifr_name), ifr->ifr_name);
1551 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1553 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1557 * Get its netmask and OR it into our mask.
1559 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1561 mask |= INET_ADDR(ifreq.ifr_addr);
1569 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1572 logwtmp(line, name, host)
1573 const char *line, *name, *host;
1575 static struct utmpx utmpx;
1579 strlcpy(utmpx.ut_user, sizeof(utmpx.ut_user), name);
1580 strlcpy(utmpx.ut_id, sizeof(utmpx.ut_id), ifname);
1581 strlcpy(utmpx.ut_line, sizeof(utmpx.ut_line), line);
1582 utmpx.ut_pid = getpid();
1583 utmpx.ut_type = USER_PROCESS;
1585 utmpx.ut_type = DEAD_PROCESS;
1587 gettimeofday(&utmpx.ut_tv, NULL);
1588 updwtmpx("/var/adm/wtmpx", &utmpx);
1592 * get_host_seed - return the serial number of this machine.
1599 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1600 error("sysinfo: %m");
1603 return (int) strtoul(buf, NULL, 16);
1607 strioctl(fd, cmd, ptr, ilen, olen)
1608 int fd, cmd, ilen, olen;
1611 struct strioctl str;
1617 if (ioctl(fd, I_STR, &str) == -1)
1619 if (str.ic_len != olen)
1620 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
1621 olen, str.ic_len, cmd);
1626 * lock - create a lock file for the named lock device
1629 #define LOCK_PREFIX "/var/spool/locks/LK."
1630 static char lock_file[40]; /* name of lock file created */
1640 if (stat(dev, &sbuf) < 0) {
1641 error("Can't get device number for %s: %m", dev);
1644 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1645 error("Can't lock %s: not a character device", dev);
1648 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
1649 LOCK_PREFIX, major(sbuf.st_dev),
1650 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1652 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1654 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1655 /* Read the lock file to find out who has the device locked */
1656 n = read(fd, ascii_pid, 11);
1658 error("Can't read pid from lock file %s", lock_file);
1662 pid = atoi(ascii_pid);
1663 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1664 /* pid no longer exists - remove the lock file */
1665 if (unlink(lock_file) == 0) {
1667 notice("Removed stale lock on %s (pid %d)",
1671 warn("Couldn't remove stale lock on %s",
1674 notice("Device %s is locked by pid %d",
1679 error("Can't create lock file %s: %m", lock_file);
1684 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
1685 write(fd, ascii_pid, 11);
1692 * unlock - remove our lockfile
1705 * cifroute - delete a route through the addresses given.
1708 cifroute(u, our, his)
1714 memset(&rt, 0, sizeof(rt));
1715 rt.rt_dst.sa_family = AF_INET;
1716 INET_ADDR(rt.rt_dst) = his;
1717 rt.rt_gateway.sa_family = AF_INET;
1718 INET_ADDR(rt.rt_gateway) = our;
1719 rt.rt_flags = RTF_HOST;
1721 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1722 error("Can't delete route: %m");
1730 * have_route_to - determine if the system has a route to the specified
1731 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
1732 * `addr' is in network byte order.
1733 * For demand mode to work properly, we have to ignore routes
1734 * through our own interface.
1736 #ifndef T_CURRENT /* needed for Solaris 2.5 */
1737 #define T_CURRENT MI_T_CURRENT
1744 int fd, r, flags, i;
1746 struct T_optmgmt_req req;
1750 struct T_optmgmt_ack ack;
1751 unsigned char space[64];
1754 struct strbuf cbuf, dbuf;
1756 mib2_ipRouteEntry_t routes[8];
1757 mib2_ipRouteEntry_t *rp;
1759 fd = open("/dev/ip", O_RDWR);
1761 warn("have_route_to: couldn't open /dev/ip: %m");
1765 req.req.PRIM_type = T_OPTMGMT_REQ;
1766 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
1767 req.req.OPT_length = sizeof(req.hdr);
1768 req.req.MGMT_flags = T_CURRENT;
1770 req.hdr.level = MIB2_IP;
1774 cbuf.buf = (char *) &req;
1775 cbuf.len = sizeof(req);
1777 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
1778 warn("have_route_to: putmsg: %m");
1784 cbuf.buf = (char *) &ack;
1785 cbuf.maxlen = sizeof(ack);
1786 dbuf.buf = (char *) routes;
1787 dbuf.maxlen = sizeof(routes);
1789 r = getmsg(fd, &cbuf, &dbuf, &flags);
1791 warn("have_route_to: getmsg: %m");
1796 if (cbuf.len < sizeof(struct T_optmgmt_ack)
1797 || ack.ack.PRIM_type != T_OPTMGMT_ACK
1798 || ack.ack.MGMT_flags != T_SUCCESS
1799 || ack.ack.OPT_length < sizeof(struct opthdr)) {
1800 dbglog("have_route_to: bad message len=%d prim=%d",
1801 cbuf.len, ack.ack.PRIM_type);
1806 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
1807 if (rh->level == 0 && rh->name == 0)
1809 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
1810 while (r == MOREDATA)
1811 r = getmsg(fd, NULL, &dbuf, &flags);
1816 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
1817 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
1818 if (rp->ipRouteMask != ~0) {
1819 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
1820 rp->ipRouteDest, rp->ipRouteNextHop,
1822 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
1823 && rp->ipRouteNextHop != remote_addr)
1829 r = getmsg(fd, NULL, &dbuf, &flags);