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 1.30 1999/04/12 06:24:51 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];
95 static int tty_npushed;
97 static int if_is_up; /* Interface has been marked up */
98 static u_int32_t remote_addr; /* IP address of peer */
99 static u_int32_t default_route_gateway; /* Gateway for default route added */
100 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
102 /* Prototypes for procedures local to this file. */
103 static int translate_speed __P((int));
104 static int baud_rate_of __P((int));
105 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
106 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
107 static int dlpi_attach __P((int, int));
108 static int dlpi_info_req __P((int));
109 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
110 static int strioctl __P((int, int, void *, int, int));
114 * sys_init - System-dependent initialization.
123 union DL_primitives prim;
128 ipfd = open("/dev/ip", O_RDWR, 0);
130 fatal("Couldn't open IP device: %m");
132 if (default_device && !notty)
133 tty_sid = getsid((pid_t)0);
135 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
137 fatal("Can't open /dev/ppp: %m");
138 if (kdebugflag & 1) {
139 x = PPPDBG_LOG + PPPDBG_DRIVER;
140 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
143 /* Assign a new PPA and get its unit number. */
144 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
145 fatal("Can't create new PPP interface: %m");
148 * Open the ppp device again and link it under the ip multiplexor.
149 * IP will assign a unit number which hopefully is the same as ifunit.
150 * I don't know any way to be certain they will be the same. :-(
152 ifd = open("/dev/ppp", O_RDWR, 0);
154 fatal("Can't open /dev/ppp (2): %m");
155 if (kdebugflag & 1) {
156 x = PPPDBG_LOG + PPPDBG_DRIVER;
157 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
160 if (ioctl(ifd, I_PUSH, "ip") < 0) {
162 fatal("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) {
168 fatal("Can't attach to ppp%d: %m", ifunit);
171 ipmuxid = ioctl(ipfd, I_LINK, ifd);
174 fatal("Can't link PPP device to IP: %m");
177 /* Set the interface name for the link. */
178 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
179 ifr.ifr_metric = ipmuxid;
180 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
181 fatal("Can't set interface name %s: %m", ifr.ifr_name);
188 * sys_cleanup - restore any system state we modified before exiting:
189 * mark the interface down, delete default route and/or proxy arp entry.
190 * This should call die() because it's called from die().
199 if (default_route_gateway)
200 cifdefaultroute(0, default_route_gateway, default_route_gateway);
202 cifproxyarp(0, proxy_arp_addr);
206 * sys_close - Clean up in a child process before execing.
217 * sys_check_options - check the options that the user specified
227 * daemon - Detach us from controlling terminal session.
230 daemon(nochdir, noclose)
231 int nochdir, noclose;
235 if ((pid = fork()) < 0)
238 exit(0); /* parent dies */
243 fclose(stdin); /* don't need stdin, stdout, stderr */
252 * ppp_available - check whether the system has any ppp interfaces
259 return stat("/dev/ppp", &buf) >= 0;
263 * establish_ppp - Turn the serial port into a ppp interface.
271 /* Pop any existing modules off the tty stream. */
273 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
274 || strcmp(tty_modules[i], "ptem") == 0
275 || ioctl(fd, I_POP, 0) < 0)
279 /* Push the async hdlc module and the compressor module. */
281 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
282 error("Couldn't push PPP Async HDLC module: %m");
286 if (kdebugflag & 4) {
287 i = PPPDBG_LOG + PPPDBG_AHDLC;
288 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
290 if (ioctl(fd, I_PUSH, "ppp_comp") < 0)
291 error("Couldn't push PPP compression module: %m");
294 if (kdebugflag & 2) {
295 i = PPPDBG_LOG + PPPDBG_COMP;
296 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
299 /* Link the serial port under the PPP multiplexor. */
300 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
301 error("Can't link tty to PPP mux: %m");
309 * restore_loop - reattach the ppp unit to the loopback.
310 * This doesn't need to do anything because disestablish_ppp does it.
318 * disestablish_ppp - Restore the serial port to normal operation.
319 * It attempts to reconstruct the stream with the previously popped
320 * modules. This shouldn't call die() because it's called from die().
329 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
331 error("Can't unlink tty from PPP mux: %m");
336 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
338 for (i = tty_nmodules - 1; i >= 0; --i)
339 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
340 error("Couldn't restore tty module %s: %m",
343 if (hungup && default_device && tty_sid > 0) {
345 * If we have received a hangup, we need to send a SIGHUP
346 * to the terminal's controlling process. The reason is
347 * that the original stream head for the terminal hasn't
348 * seen the M_HANGUP message (it went up through the ppp
349 * driver to the stream head for our fd to /dev/ppp).
351 kill(tty_sid, SIGHUP);
357 * Check whether the link seems not to be 8-bit clean.
365 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
370 s = "bit 7 set to 1";
373 s = "bit 7 set to 0";
383 warn("Serial link is not 8-bit clean:");
384 warn("All received characters had %s", s);
389 * List of valid speeds.
392 int speed_int, speed_val;
467 * Translate from bits/second to a speed_t.
473 struct speed *speedp;
477 for (speedp = speeds; speedp->speed_int; speedp++)
478 if (bps == speedp->speed_int)
479 return speedp->speed_val;
480 warn("speed %d not supported", bps);
485 * Translate from a speed_t to bits/second.
491 struct speed *speedp;
495 for (speedp = speeds; speedp->speed_int; speedp++)
496 if (speed == speedp->speed_val)
497 return speedp->speed_int;
502 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
503 * at the requested speed, etc. If `local' is true, set CLOCAL
504 * regardless of whether the modem option was specified.
507 set_up_tty(fd, local)
512 #if !defined (CRTSCTS)
516 if (tcgetattr(fd, &tios) < 0)
517 fatal("tcgetattr: %m");
521 if (ioctl (fd, TCGETX, &tiox) < 0) {
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 error("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 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
581 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
582 fatal("tcsetattr: %m");
585 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
586 error("TCSETXF: %m");
590 baud_rate = inspeed = baud_rate_of(speed);
595 * restore_tty - restore the terminal to the saved settings.
602 if (!default_device) {
604 * Turn off echoing, because otherwise we can get into
605 * a loop with the tty and the modem echoing to each other.
606 * We presume we are the sole user of this tty device, so
607 * when we close it, it will revert to its defaults anyway.
609 inittermios.c_lflag &= ~(ECHO | ECHONL);
611 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
612 if (!hungup && errno != ENXIO)
613 warn("tcsetattr: %m");
615 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
616 if (!hungup && errno != ENXIO)
617 error("TCSETXF: %m");
620 ioctl(fd, TIOCSWINSZ, &wsinfo);
626 * setdtr - control the DTR line on the serial port.
627 * This is called from die(), so it shouldn't call die().
633 int modembits = TIOCM_DTR;
635 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
639 * open_loopback - open the device we use for getting packets
640 * in demand mode. Under Solaris 2, we use our existing fd
650 * output - Output PPP packet.
663 dbglog("sent %P", p, len);
666 data.buf = (caddr_t) p;
668 while (putmsg(pppfd, NULL, &data, 0) < 0) {
669 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
671 error("Couldn't send packet: %m");
675 pfd.events = POLLOUT;
676 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
682 * wait_input - wait until there is data available,
683 * for the length of time specified by *timo (indefinite
688 struct timeval *timo;
692 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
693 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
698 * add_fd - add an fd to the set that wait_input waits for.
705 for (n = 0; n < n_pollfds; ++n)
706 if (pollfds[n].fd == fd)
708 if (n_pollfds < MAX_POLLFDS) {
709 pollfds[n_pollfds].fd = fd;
710 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
713 error("Too many inputs!");
717 * remove_fd - remove an fd from the set that wait_input waits for.
724 for (n = 0; n < n_pollfds; ++n) {
725 if (pollfds[n].fd == fd) {
726 while (++n < n_pollfds)
727 pollfds[n-1] = pollfds[n];
736 * wait_loop_output - wait until there is data available on the
737 * loopback, for the length of time specified by *timo (indefinite
741 wait_loop_output(timo)
742 struct timeval *timo;
748 * wait_time - wait for a given length of time or until a
749 * signal is received.
753 struct timeval *timo;
757 n = select(0, NULL, NULL, NULL, timo);
758 if (n < 0 && errno != EINTR)
765 * read_packet - get a PPP packet from the serial device.
771 struct strbuf ctrl, data;
773 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
776 data.maxlen = PPP_MRU + PPP_HDRLEN;
777 data.buf = (caddr_t) buf;
778 ctrl.maxlen = sizeof(ctrlbuf);
779 ctrl.buf = (caddr_t) ctrlbuf;
781 len = getmsg(pppfd, &ctrl, &data, &flags);
783 if (errno == EAGAIN || errno == EINTR)
785 fatal("Error reading packet: %m");
792 * Got a M_PROTO or M_PCPROTO message. Interpret it
793 * as a DLPI primitive??
796 dbglog("got dlpi prim 0x%x, len=%d",
797 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
803 * get_loop_output - get outgoing packets from the ppp device,
804 * and detect when we want to bring the real link up.
805 * Return value is 1 if we need to bring up the link, 0 otherwise.
813 while ((len = read_packet(inpacket_buf)) > 0) {
814 if (loop_frame(inpacket_buf, len))
821 * ppp_send_config - configure the transmit characteristics of
825 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
834 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
835 if (hungup && errno == ENXIO)
837 error("Couldn't set MTU: %m");
840 /* can't set these if we don't have a stream attached below /dev/ppp */
841 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
842 error("Couldn't set transmit ACCM: %m");
844 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
845 cf[1] = COMP_PROT | COMP_AC;
846 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
847 error("Couldn't set prot/AC compression: %m");
851 /* set the MTU for IP as well */
852 memset(&ifr, 0, sizeof(ifr));
853 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
854 ifr.ifr_metric = link_mtu;
855 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
856 error("Couldn't set IP MTU: %m");
861 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
864 ppp_set_xaccm(unit, accm)
869 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
870 if (!hungup || errno != ENXIO)
871 warn("Couldn't set extended ACCM: %m");
876 * ppp_recv_config - configure the receive-side characteristics of
880 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
888 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
889 if (hungup && errno == ENXIO)
891 error("Couldn't set MRU: %m");
894 /* can't set these if we don't have a stream attached below /dev/ppp */
895 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
896 error("Couldn't set receive ACCM: %m");
898 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
899 cf[1] = DECOMP_PROT | DECOMP_AC;
900 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
901 error("Couldn't set prot/AC decompression: %m");
907 * ccp_test - ask kernel whether a given compression method
908 * is acceptable for use.
911 ccp_test(unit, opt_ptr, opt_len, for_transmit)
912 int unit, opt_len, for_transmit;
915 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
916 opt_ptr, opt_len, 0) >= 0)
918 return (errno == ENOSR)? 0: -1;
922 * ccp_flags_set - inform kernel about the current state of CCP.
925 ccp_flags_set(unit, isopen, isup)
926 int unit, isopen, isup;
930 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
931 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
932 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
933 if (!hungup || errno != ENXIO)
934 error("Couldn't set kernel CCP state: %m");
939 * get_idle_time - return how long the link has been idle.
946 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
950 * get_ppp_stats - return statistics for the link.
953 get_ppp_stats(u, stats)
955 struct pppd_stats *stats;
959 if (strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
960 error("Couldn't get link statistics: %m");
963 stats->bytes_in = s.p.ppp_ibytes;
964 stats->bytes_out = s.p.ppp_obytes;
970 * set_filters - transfer the pass and active filters to the kernel.
973 set_filters(pass, active)
974 struct bpf_program *pass, *active;
978 if (pass->bf_len > 0) {
979 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
980 sizeof(struct bpf_program), 0) < 0) {
981 error("Couldn't set pass-filter in kernel: %m");
985 if (active->bf_len > 0) {
986 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
987 sizeof(struct bpf_program), 0) < 0) {
988 error("Couldn't set active-filter in kernel: %m");
997 * ccp_fatal_error - returns 1 if decompression was disabled as a
998 * result of an error detected after decompression of a packet,
999 * 0 otherwise. This is necessary because of patent nonsense.
1002 ccp_fatal_error(unit)
1008 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1009 if (errno != ENXIO && errno != EINVAL)
1010 error("Couldn't get compression flags: %m");
1013 return cf[0] & CCP_FATALERROR;
1017 * sifvjcomp - config tcp header compression
1020 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1021 int u, vjcomp, xcidcomp, xmaxcid;
1027 maxcid[0] = xcidcomp;
1028 maxcid[1] = 15; /* XXX should be rmaxcid */
1029 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1030 error("Couldn't initialize VJ compression: %m");
1034 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1035 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1036 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1037 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1039 error("Couldn't enable VJ compression: %m");
1046 * sifup - Config the interface up and enable IP packets to pass.
1054 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1055 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1056 error("Couldn't mark interface up (get): %m");
1059 ifr.ifr_flags |= IFF_UP;
1060 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1061 error("Couldn't mark interface up (set): %m");
1069 * sifdown - Config the interface down and disable IP.
1079 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1080 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1081 error("Couldn't mark interface down (get): %m");
1084 ifr.ifr_flags &= ~IFF_UP;
1085 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1086 error("Couldn't mark interface down (set): %m");
1094 * sifnpmode - Set the mode for handling packets for a given NP.
1097 sifnpmode(u, proto, mode)
1105 npi[1] = (int) mode;
1106 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1107 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1113 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1116 * sifaddr - Config the interface IP addresses and netmask.
1126 memset(&ifr, 0, sizeof(ifr));
1127 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1128 ifr.ifr_addr.sa_family = AF_INET;
1129 INET_ADDR(ifr.ifr_addr) = m;
1130 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1131 error("Couldn't set IP netmask: %m");
1134 ifr.ifr_addr.sa_family = AF_INET;
1135 INET_ADDR(ifr.ifr_addr) = o;
1136 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1137 error("Couldn't set local IP address: %m");
1142 * On some systems, we have to explicitly set the point-to-point
1143 * flag bit before we can set a destination address.
1145 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1146 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1147 ifr.ifr_flags |= IFF_POINTOPOINT;
1148 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1149 error("Couldn't mark interface pt-to-pt: %m");
1153 ifr.ifr_dstaddr.sa_family = AF_INET;
1154 INET_ADDR(ifr.ifr_dstaddr) = h;
1155 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1156 error("Couldn't set remote IP address: %m");
1159 #if 0 /* now done in ppp_send_config */
1160 ifr.ifr_metric = link_mtu;
1161 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1162 error("Couldn't set IP MTU: %m");
1171 * cifaddr - Clear the interface IP addresses, and delete routes
1172 * through the interface if possible.
1179 #if defined(__USLC__) /* was: #if 0 */
1180 cifroute(unit, ouraddr, hisaddr);
1182 notice("Removing ppp interface unit");
1183 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1184 error("Can't remove ppp interface unit: %m");
1195 * sifdefaultroute - assign a default route through the address given.
1198 sifdefaultroute(u, l, g)
1204 #if defined(__USLC__)
1205 g = l; /* use the local address as gateway */
1207 memset(&rt, 0, sizeof(rt));
1208 rt.rt_dst.sa_family = AF_INET;
1209 INET_ADDR(rt.rt_dst) = 0;
1210 rt.rt_gateway.sa_family = AF_INET;
1211 INET_ADDR(rt.rt_gateway) = g;
1212 rt.rt_flags = RTF_GATEWAY;
1214 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1215 error("Can't add default route: %m");
1219 default_route_gateway = g;
1224 * cifdefaultroute - delete a default route through the address given.
1227 cifdefaultroute(u, l, g)
1233 #if defined(__USLC__)
1234 g = l; /* use the local address as gateway */
1236 memset(&rt, 0, sizeof(rt));
1237 rt.rt_dst.sa_family = AF_INET;
1238 INET_ADDR(rt.rt_dst) = 0;
1239 rt.rt_gateway.sa_family = AF_INET;
1240 INET_ADDR(rt.rt_gateway) = g;
1241 rt.rt_flags = RTF_GATEWAY;
1243 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1244 error("Can't delete default route: %m");
1248 default_route_gateway = 0;
1253 * sifproxyarp - Make a proxy ARP entry for the peer.
1256 sifproxyarp(unit, hisaddr)
1260 struct arpreq arpreq;
1262 memset(&arpreq, 0, sizeof(arpreq));
1263 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1266 arpreq.arp_pa.sa_family = AF_INET;
1267 INET_ADDR(arpreq.arp_pa) = hisaddr;
1268 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1269 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1270 error("Couldn't set proxy ARP entry: %m");
1274 proxy_arp_addr = hisaddr;
1279 * cifproxyarp - Delete the proxy ARP entry for the peer.
1282 cifproxyarp(unit, hisaddr)
1286 struct arpreq arpreq;
1288 memset(&arpreq, 0, sizeof(arpreq));
1289 arpreq.arp_pa.sa_family = AF_INET;
1290 INET_ADDR(arpreq.arp_pa) = hisaddr;
1291 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1292 error("Couldn't delete proxy ARP entry: %m");
1301 * get_ether_addr - get the hardware address of an interface on the
1302 * the same subnet as ipaddr.
1307 get_ether_addr(ipaddr, hwaddr)
1309 struct sockaddr *hwaddr;
1311 struct ifreq *ifr, *ifend, ifreq;
1314 u_int32_t ina, mask;
1317 * Scan through the system's network interfaces.
1320 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1323 ifc.ifc_len = nif * sizeof(struct ifreq);
1324 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1325 if (ifc.ifc_buf == 0)
1327 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1328 warn("Couldn't get system interface list: %m");
1332 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1333 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1334 if (ifr->ifr_addr.sa_family != AF_INET)
1337 * Check that the interface is up, and not point-to-point or loopback.
1339 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1340 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1342 if ((ifreq.ifr_flags &
1343 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1344 != (IFF_UP|IFF_BROADCAST))
1347 * Get its netmask and check that it's on the right subnet.
1349 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1351 ina = INET_ADDR(ifr->ifr_addr);
1352 mask = INET_ADDR(ifreq.ifr_addr);
1353 if ((ipaddr & mask) == (ina & mask))
1358 warn("No suitable interface found for proxy ARP");
1363 info("found interface %s for proxy ARP", ifr->ifr_name);
1364 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
1365 error("Couldn't get hardware address for %s", ifr->ifr_name);
1375 * get_hw_addr - obtain the hardware address for a named interface.
1378 get_hw_addr(name, ina, hwaddr)
1381 struct sockaddr *hwaddr;
1384 /* New way - get the address by doing an arp request. */
1388 s = socket(AF_INET, SOCK_DGRAM, 0);
1391 memset(&req, 0, sizeof(req));
1392 req.arp_pa.sa_family = AF_INET;
1393 INET_ADDR(req.arp_pa) = ina;
1394 if (ioctl(s, SIOCGARP, &req) < 0) {
1395 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
1398 *hwaddr = req.arp_ha;
1399 hwaddr->sa_family = AF_UNSPEC;
1403 int unit, iffd, adrlen;
1404 unsigned char *adrp;
1407 union DL_primitives prim;
1412 * We have to open the device and ask it for its hardware address.
1413 * First split apart the device name and unit.
1415 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
1416 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
1423 * Open the device and do a DLPI attach and phys_addr_req.
1425 iffd = open(ifdev, O_RDWR);
1427 error("Can't open %s: %m", ifdev);
1430 if (dlpi_attach(iffd, unit) < 0
1431 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1432 || dlpi_info_req(iffd) < 0
1433 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1438 adrlen = reply.prim.info_ack.dl_addr_length;
1439 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1440 #if DL_CURRENT_VERSION >= 2
1441 if (reply.prim.info_ack.dl_sap_length < 0)
1442 adrlen += reply.prim.info_ack.dl_sap_length;
1444 adrp += reply.prim.info_ack.dl_sap_length;
1446 hwaddr->sa_family = AF_UNSPEC;
1447 memcpy(hwaddr->sa_data, adrp, adrlen);
1454 dlpi_attach(fd, ppa)
1457 dl_attach_req_t req;
1460 req.dl_primitive = DL_ATTACH_REQ;
1462 buf.len = sizeof(req);
1463 buf.buf = (void *) &req;
1464 return putmsg(fd, &buf, NULL, RS_HIPRI);
1474 req.dl_primitive = DL_INFO_REQ;
1475 buf.len = sizeof(req);
1476 buf.buf = (void *) &req;
1477 return putmsg(fd, &buf, NULL, RS_HIPRI);
1481 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1482 union DL_primitives *reply;
1483 int fd, expected_prim, maxlen;
1490 * Use poll to wait for a message with a timeout.
1493 pfd.events = POLLIN | POLLPRI;
1495 n = poll(&pfd, 1, 1000);
1496 } while (n == -1 && errno == EINTR);
1503 buf.maxlen = maxlen;
1504 buf.buf = (void *) reply;
1506 if (getmsg(fd, &buf, NULL, &flags) < 0)
1509 if (buf.len < sizeof(ulong)) {
1511 dbglog("dlpi response short (len=%d)\n", buf.len);
1515 if (reply->dl_primitive == expected_prim)
1519 if (reply->dl_primitive == DL_ERROR_ACK) {
1520 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
1521 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1522 reply->error_ack.dl_error_primitive);
1524 dbglog("dlpi unexpected response prim %x\n",
1525 reply->dl_primitive);
1533 * Return user specified netmask, modified by any mask we might determine
1534 * for address `addr' (in network byte order).
1535 * Here we scan through the system's list of interfaces, looking for
1536 * any non-point-to-point interfaces which might appear to be on the same
1537 * network as `addr'. If we find any, we OR in their netmask to the
1538 * user-specified netmask.
1544 u_int32_t mask, nmask, ina;
1545 struct ifreq *ifr, *ifend, ifreq;
1550 if (IN_CLASSA(addr)) /* determine network mask for address class */
1551 nmask = IN_CLASSA_NET;
1552 else if (IN_CLASSB(addr))
1553 nmask = IN_CLASSB_NET;
1555 nmask = IN_CLASSC_NET;
1556 /* class D nets are disallowed by bad_ip_adrs */
1557 mask = netmask | htonl(nmask);
1560 * Scan through the system's network interfaces.
1563 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1566 ifc.ifc_len = nif * sizeof(struct ifreq);
1567 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1568 if (ifc.ifc_buf == 0)
1570 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1571 warn("Couldn't get system interface list: %m");
1575 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1576 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1578 * Check the interface's internet address.
1580 if (ifr->ifr_addr.sa_family != AF_INET)
1582 ina = INET_ADDR(ifr->ifr_addr);
1583 if ((ntohl(ina) & nmask) != (addr & nmask))
1586 * Check that the interface is up, and not point-to-point or loopback.
1588 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1589 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1591 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1595 * Get its netmask and OR it into our mask.
1597 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1599 mask |= INET_ADDR(ifreq.ifr_addr);
1607 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1610 logwtmp(line, name, host)
1611 const char *line, *name, *host;
1613 static struct utmpx utmpx;
1617 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1618 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1619 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1620 utmpx.ut_pid = getpid();
1621 utmpx.ut_type = USER_PROCESS;
1623 utmpx.ut_type = DEAD_PROCESS;
1625 gettimeofday(&utmpx.ut_tv, NULL);
1626 updwtmpx("/var/adm/wtmpx", &utmpx);
1630 * get_host_seed - return the serial number of this machine.
1637 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1638 error("sysinfo: %m");
1641 return (int) strtoul(buf, NULL, 16);
1645 strioctl(fd, cmd, ptr, ilen, olen)
1646 int fd, cmd, ilen, olen;
1649 struct strioctl str;
1655 if (ioctl(fd, I_STR, &str) == -1)
1657 if (str.ic_len != olen)
1658 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
1659 olen, str.ic_len, cmd);
1665 * lock - create a lock file for the named lock device
1668 #define LOCK_PREFIX "/var/spool/locks/LK."
1669 static char lock_file[40]; /* name of lock file created */
1679 if (stat(dev, &sbuf) < 0) {
1680 error("Can't get device number for %s: %m", dev);
1683 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1684 error("Can't lock %s: not a character device", dev);
1687 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
1688 LOCK_PREFIX, major(sbuf.st_dev),
1689 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1691 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1693 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1694 /* Read the lock file to find out who has the device locked */
1695 n = read(fd, ascii_pid, 11);
1697 error("Can't read pid from lock file %s", lock_file);
1701 pid = atoi(ascii_pid);
1702 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1703 /* pid no longer exists - remove the lock file */
1704 if (unlink(lock_file) == 0) {
1706 notice("Removed stale lock on %s (pid %d)",
1710 warn("Couldn't remove stale lock on %s",
1713 notice("Device %s is locked by pid %d",
1718 error("Can't create lock file %s: %m", lock_file);
1723 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
1724 write(fd, ascii_pid, 11);
1731 * unlock - remove our lockfile
1744 * cifroute - delete a route through the addresses given.
1747 cifroute(u, our, his)
1753 memset(&rt, 0, sizeof(rt));
1754 rt.rt_dst.sa_family = AF_INET;
1755 INET_ADDR(rt.rt_dst) = his;
1756 rt.rt_gateway.sa_family = AF_INET;
1757 INET_ADDR(rt.rt_gateway) = our;
1758 rt.rt_flags = RTF_HOST;
1760 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1761 error("Can't delete route: %m");
1769 * have_route_to - determine if the system has a route to the specified
1770 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
1771 * `addr' is in network byte order.
1772 * For demand mode to work properly, we have to ignore routes
1773 * through our own interface.
1775 #ifndef T_CURRENT /* needed for Solaris 2.5 */
1776 #define T_CURRENT MI_T_CURRENT
1783 int fd, r, flags, i;
1785 struct T_optmgmt_req req;
1789 struct T_optmgmt_ack ack;
1790 unsigned char space[64];
1793 struct strbuf cbuf, dbuf;
1795 mib2_ipRouteEntry_t routes[8];
1796 mib2_ipRouteEntry_t *rp;
1798 fd = open("/dev/ip", O_RDWR);
1800 warn("have_route_to: couldn't open /dev/ip: %m");
1804 req.req.PRIM_type = T_OPTMGMT_REQ;
1805 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
1806 req.req.OPT_length = sizeof(req.hdr);
1807 req.req.MGMT_flags = T_CURRENT;
1809 req.hdr.level = MIB2_IP;
1813 cbuf.buf = (char *) &req;
1814 cbuf.len = sizeof(req);
1816 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
1817 warn("have_route_to: putmsg: %m");
1823 cbuf.buf = (char *) &ack;
1824 cbuf.maxlen = sizeof(ack);
1825 dbuf.buf = (char *) routes;
1826 dbuf.maxlen = sizeof(routes);
1828 r = getmsg(fd, &cbuf, &dbuf, &flags);
1830 warn("have_route_to: getmsg: %m");
1835 if (cbuf.len < sizeof(struct T_optmgmt_ack)
1836 || ack.ack.PRIM_type != T_OPTMGMT_ACK
1837 || ack.ack.MGMT_flags != T_SUCCESS
1838 || ack.ack.OPT_length < sizeof(struct opthdr)) {
1839 dbglog("have_route_to: bad message len=%d prim=%d",
1840 cbuf.len, ack.ack.PRIM_type);
1845 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
1846 if (rh->level == 0 && rh->name == 0)
1848 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
1849 while (r == MOREDATA)
1850 r = getmsg(fd, NULL, &dbuf, &flags);
1855 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
1856 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
1857 if (rp->ipRouteMask != ~0) {
1858 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
1859 rp->ipRouteDest, rp->ipRouteNextHop,
1861 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
1862 && rp->ipRouteNextHop != remote_addr)
1868 r = getmsg(fd, NULL, &dbuf, &flags);
1876 * get_pty - get a pty master/slave pair and chown the slave side to
1877 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
1880 get_pty(master_fdp, slave_fdp, slave_name, uid)
1888 struct termios tios;
1890 mfd = open("/dev/ptmx", O_RDWR);
1892 error("Couldn't open pty master: %m");
1896 pty_name = ptsname(mfd);
1897 if (pty_name == NULL) {
1898 error("Couldn't get name of pty slave");
1902 if (chown(pty_name, uid, -1) < 0)
1903 warn("Couldn't change owner of pty slave: %m");
1904 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
1905 warn("Couldn't change permissions on pty slave: %m");
1906 if (unlockpt(mfd) < 0)
1907 warn("Couldn't unlock pty slave: %m");
1909 sfd = open(pty_name, O_RDWR);
1911 error("Couldn't open pty slave %s: %m", pty_name);
1915 if (ioctl(sfd, I_PUSH, "ptem") < 0)
1916 warn("Couldn't push ptem module on pty slave: %m");
1918 dbglog("Using %s", pty_name);
1919 strlcpy(slave_name, pty_name, MAXPATHLEN);