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 1.29 1999/03/22 05:55:39 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 */
251 * ppp_available - check whether the system has any ppp interfaces
258 return stat("/dev/ppp", &buf) >= 0;
262 * establish_ppp - Turn the serial port into a ppp interface.
270 /* Pop any existing modules off the tty stream. */
272 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
273 || strcmp(tty_modules[i], "ptem") == 0
274 || ioctl(fd, I_POP, 0) < 0)
278 /* Push the async hdlc module and the compressor module. */
280 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
281 error("Couldn't push PPP Async HDLC module: %m");
285 if (kdebugflag & 4) {
286 i = PPPDBG_LOG + PPPDBG_AHDLC;
287 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
289 if (ioctl(fd, I_PUSH, "ppp_comp") < 0)
290 error("Couldn't push PPP compression module: %m");
293 if (kdebugflag & 2) {
294 i = PPPDBG_LOG + PPPDBG_COMP;
295 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
298 /* Link the serial port under the PPP multiplexor. */
299 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
300 error("Can't link tty to PPP mux: %m");
308 * restore_loop - reattach the ppp unit to the loopback.
309 * This doesn't need to do anything because disestablish_ppp does it.
317 * disestablish_ppp - Restore the serial port to normal operation.
318 * It attempts to reconstruct the stream with the previously popped
319 * modules. This shouldn't call die() because it's called from die().
328 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
330 error("Can't unlink tty from PPP mux: %m");
335 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
337 for (i = tty_nmodules - 1; i >= 0; --i)
338 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
339 error("Couldn't restore tty module %s: %m",
342 if (hungup && default_device && tty_sid > 0) {
344 * If we have received a hangup, we need to send a SIGHUP
345 * to the terminal's controlling process. The reason is
346 * that the original stream head for the terminal hasn't
347 * seen the M_HANGUP message (it went up through the ppp
348 * driver to the stream head for our fd to /dev/ppp).
350 kill(tty_sid, SIGHUP);
356 * Check whether the link seems not to be 8-bit clean.
364 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
369 s = "bit 7 set to 1";
372 s = "bit 7 set to 0";
382 warn("Serial link is not 8-bit clean:");
383 warn("All received characters had %s", s);
388 * List of valid speeds.
391 int speed_int, speed_val;
463 * Translate from bits/second to a speed_t.
469 struct speed *speedp;
473 for (speedp = speeds; speedp->speed_int; speedp++)
474 if (bps == speedp->speed_int)
475 return speedp->speed_val;
476 warn("speed %d not supported", bps);
481 * Translate from a speed_t to bits/second.
487 struct speed *speedp;
491 for (speedp = speeds; speedp->speed_int; speedp++)
492 if (speed == speedp->speed_val)
493 return speedp->speed_int;
498 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
499 * at the requested speed, etc. If `local' is true, set CLOCAL
500 * regardless of whether the modem option was specified.
503 set_up_tty(fd, local)
508 #if !defined (CRTSCTS)
512 if (tcgetattr(fd, &tios) < 0)
513 fatal("tcgetattr: %m");
517 if (ioctl (fd, TCGETX, &tiox) < 0) {
529 ioctl(fd, TIOCGWINSZ, &wsinfo);
532 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
535 tios.c_cflag |= CRTSCTS;
536 else if (crtscts < 0)
537 tios.c_cflag &= ~CRTSCTS;
539 if (crtscts != 0 && !termiox_ok) {
540 error("Can't set RTS/CTS flow control");
541 } else if (crtscts > 0) {
542 tiox.x_hflag |= RTSXOFF|CTSXON;
543 } else if (crtscts < 0) {
544 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
548 tios.c_cflag |= CS8 | CREAD | HUPCL;
550 tios.c_cflag |= CLOCAL;
551 tios.c_iflag = IGNBRK | IGNPAR;
555 tios.c_cc[VTIME] = 0;
558 tios.c_iflag |= IXON | IXOFF;
559 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
560 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
563 speed = translate_speed(inspeed);
565 cfsetospeed(&tios, speed);
566 cfsetispeed(&tios, speed);
568 speed = cfgetospeed(&tios);
570 * We can't proceed if the serial port speed is 0,
571 * since that implies that the serial port is disabled.
574 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
577 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
578 fatal("tcsetattr: %m");
581 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
582 error("TCSETXF: %m");
586 baud_rate = inspeed = baud_rate_of(speed);
591 * restore_tty - restore the terminal to the saved settings.
598 if (!default_device) {
600 * Turn off echoing, because otherwise we can get into
601 * a loop with the tty and the modem echoing to each other.
602 * We presume we are the sole user of this tty device, so
603 * when we close it, it will revert to its defaults anyway.
605 inittermios.c_lflag &= ~(ECHO | ECHONL);
607 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
608 if (!hungup && errno != ENXIO)
609 warn("tcsetattr: %m");
611 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
612 if (!hungup && errno != ENXIO)
613 error("TCSETXF: %m");
616 ioctl(fd, TIOCSWINSZ, &wsinfo);
622 * setdtr - control the DTR line on the serial port.
623 * This is called from die(), so it shouldn't call die().
629 int modembits = TIOCM_DTR;
631 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
635 * open_loopback - open the device we use for getting packets
636 * in demand mode. Under Solaris 2, we use our existing fd
646 * output - Output PPP packet.
659 dbglog("sent %P", p, len);
662 data.buf = (caddr_t) p;
664 while (putmsg(pppfd, NULL, &data, 0) < 0) {
665 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
667 error("Couldn't send packet: %m");
671 pfd.events = POLLOUT;
672 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
678 * wait_input - wait until there is data available,
679 * for the length of time specified by *timo (indefinite
684 struct timeval *timo;
688 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
689 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
694 * add_fd - add an fd to the set that wait_input waits for.
701 for (n = 0; n < n_pollfds; ++n)
702 if (pollfds[n].fd == fd)
704 if (n_pollfds < MAX_POLLFDS) {
705 pollfds[n_pollfds].fd = fd;
706 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
709 error("Too many inputs!");
713 * remove_fd - remove an fd from the set that wait_input waits for.
720 for (n = 0; n < n_pollfds; ++n) {
721 if (pollfds[n].fd == fd) {
722 while (++n < n_pollfds)
723 pollfds[n-1] = pollfds[n];
732 * wait_loop_output - wait until there is data available on the
733 * loopback, for the length of time specified by *timo (indefinite
737 wait_loop_output(timo)
738 struct timeval *timo;
744 * wait_time - wait for a given length of time or until a
745 * signal is received.
749 struct timeval *timo;
753 n = select(0, NULL, NULL, NULL, timo);
754 if (n < 0 && errno != EINTR)
761 * read_packet - get a PPP packet from the serial device.
767 struct strbuf ctrl, data;
769 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
772 data.maxlen = PPP_MRU + PPP_HDRLEN;
773 data.buf = (caddr_t) buf;
774 ctrl.maxlen = sizeof(ctrlbuf);
775 ctrl.buf = (caddr_t) ctrlbuf;
777 len = getmsg(pppfd, &ctrl, &data, &flags);
779 if (errno == EAGAIN || errno == EINTR)
781 fatal("Error reading packet: %m");
788 * Got a M_PROTO or M_PCPROTO message. Interpret it
789 * as a DLPI primitive??
792 dbglog("got dlpi prim 0x%x, len=%d",
793 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
799 * get_loop_output - get outgoing packets from the ppp device,
800 * and detect when we want to bring the real link up.
801 * Return value is 1 if we need to bring up the link, 0 otherwise.
809 while ((len = read_packet(inpacket_buf)) > 0) {
810 if (loop_frame(inpacket_buf, len))
817 * ppp_send_config - configure the transmit characteristics of
821 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
830 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
831 if (hungup && errno == ENXIO)
833 error("Couldn't set MTU: %m");
836 /* can't set these if we don't have a stream attached below /dev/ppp */
837 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
838 error("Couldn't set transmit ACCM: %m");
840 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
841 cf[1] = COMP_PROT | COMP_AC;
842 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
843 error("Couldn't set prot/AC compression: %m");
847 /* set the MTU for IP as well */
848 memset(&ifr, 0, sizeof(ifr));
849 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
850 ifr.ifr_metric = link_mtu;
851 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
852 error("Couldn't set IP MTU: %m");
857 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
860 ppp_set_xaccm(unit, accm)
865 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
866 if (!hungup || errno != ENXIO)
867 warn("Couldn't set extended ACCM: %m");
872 * ppp_recv_config - configure the receive-side characteristics of
876 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
884 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
885 if (hungup && errno == ENXIO)
887 error("Couldn't set MRU: %m");
890 /* can't set these if we don't have a stream attached below /dev/ppp */
891 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
892 error("Couldn't set receive ACCM: %m");
894 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
895 cf[1] = DECOMP_PROT | DECOMP_AC;
896 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
897 error("Couldn't set prot/AC decompression: %m");
903 * ccp_test - ask kernel whether a given compression method
904 * is acceptable for use.
907 ccp_test(unit, opt_ptr, opt_len, for_transmit)
908 int unit, opt_len, for_transmit;
911 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
912 opt_ptr, opt_len, 0) >= 0)
914 return (errno == ENOSR)? 0: -1;
918 * ccp_flags_set - inform kernel about the current state of CCP.
921 ccp_flags_set(unit, isopen, isup)
922 int unit, isopen, isup;
926 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
927 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
928 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
929 if (!hungup || errno != ENXIO)
930 error("Couldn't set kernel CCP state: %m");
935 * get_idle_time - return how long the link has been idle.
942 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
946 * get_ppp_stats - return statistics for the link.
949 get_ppp_stats(u, stats)
951 struct pppd_stats *stats;
955 if (strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
956 error("Couldn't get link statistics: %m");
959 stats->bytes_in = s.p.ppp_ibytes;
960 stats->bytes_out = s.p.ppp_obytes;
966 * set_filters - transfer the pass and active filters to the kernel.
969 set_filters(pass, active)
970 struct bpf_program *pass, *active;
974 if (pass->bf_len > 0) {
975 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
976 sizeof(struct bpf_program), 0) < 0) {
977 error("Couldn't set pass-filter in kernel: %m");
981 if (active->bf_len > 0) {
982 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
983 sizeof(struct bpf_program), 0) < 0) {
984 error("Couldn't set active-filter in kernel: %m");
993 * ccp_fatal_error - returns 1 if decompression was disabled as a
994 * result of an error detected after decompression of a packet,
995 * 0 otherwise. This is necessary because of patent nonsense.
998 ccp_fatal_error(unit)
1004 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1005 if (errno != ENXIO && errno != EINVAL)
1006 error("Couldn't get compression flags: %m");
1009 return cf[0] & CCP_FATALERROR;
1013 * sifvjcomp - config tcp header compression
1016 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1017 int u, vjcomp, xcidcomp, xmaxcid;
1023 maxcid[0] = xcidcomp;
1024 maxcid[1] = 15; /* XXX should be rmaxcid */
1025 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1026 error("Couldn't initialize VJ compression: %m");
1030 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1031 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1032 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1033 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1035 error("Couldn't enable VJ compression: %m");
1042 * sifup - Config the interface up and enable IP packets to pass.
1050 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1051 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1052 error("Couldn't mark interface up (get): %m");
1055 ifr.ifr_flags |= IFF_UP;
1056 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1057 error("Couldn't mark interface up (set): %m");
1065 * sifdown - Config the interface down and disable IP.
1075 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1076 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1077 error("Couldn't mark interface down (get): %m");
1080 ifr.ifr_flags &= ~IFF_UP;
1081 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1082 error("Couldn't mark interface down (set): %m");
1090 * sifnpmode - Set the mode for handling packets for a given NP.
1093 sifnpmode(u, proto, mode)
1101 npi[1] = (int) mode;
1102 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1103 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1109 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1112 * sifaddr - Config the interface IP addresses and netmask.
1122 memset(&ifr, 0, sizeof(ifr));
1123 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1124 ifr.ifr_addr.sa_family = AF_INET;
1125 INET_ADDR(ifr.ifr_addr) = m;
1126 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1127 error("Couldn't set IP netmask: %m");
1130 ifr.ifr_addr.sa_family = AF_INET;
1131 INET_ADDR(ifr.ifr_addr) = o;
1132 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1133 error("Couldn't set local IP address: %m");
1138 * On some systems, we have to explicitly set the point-to-point
1139 * flag bit before we can set a destination address.
1141 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1142 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1143 ifr.ifr_flags |= IFF_POINTOPOINT;
1144 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1145 error("Couldn't mark interface pt-to-pt: %m");
1149 ifr.ifr_dstaddr.sa_family = AF_INET;
1150 INET_ADDR(ifr.ifr_dstaddr) = h;
1151 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1152 error("Couldn't set remote IP address: %m");
1155 #if 0 /* now done in ppp_send_config */
1156 ifr.ifr_metric = link_mtu;
1157 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1158 error("Couldn't set IP MTU: %m");
1167 * cifaddr - Clear the interface IP addresses, and delete routes
1168 * through the interface if possible.
1175 #if defined(__USLC__) /* was: #if 0 */
1176 cifroute(unit, ouraddr, hisaddr);
1178 notice("Removing ppp interface unit");
1179 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1180 error("Can't remove ppp interface unit: %m");
1191 * sifdefaultroute - assign a default route through the address given.
1194 sifdefaultroute(u, l, g)
1200 #if defined(__USLC__)
1201 g = l; /* use the local address as gateway */
1203 memset(&rt, 0, sizeof(rt));
1204 rt.rt_dst.sa_family = AF_INET;
1205 INET_ADDR(rt.rt_dst) = 0;
1206 rt.rt_gateway.sa_family = AF_INET;
1207 INET_ADDR(rt.rt_gateway) = g;
1208 rt.rt_flags = RTF_GATEWAY;
1210 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1211 error("Can't add default route: %m");
1215 default_route_gateway = g;
1220 * cifdefaultroute - delete a default route through the address given.
1223 cifdefaultroute(u, l, g)
1229 #if defined(__USLC__)
1230 g = l; /* use the local address as gateway */
1232 memset(&rt, 0, sizeof(rt));
1233 rt.rt_dst.sa_family = AF_INET;
1234 INET_ADDR(rt.rt_dst) = 0;
1235 rt.rt_gateway.sa_family = AF_INET;
1236 INET_ADDR(rt.rt_gateway) = g;
1237 rt.rt_flags = RTF_GATEWAY;
1239 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1240 error("Can't delete default route: %m");
1244 default_route_gateway = 0;
1249 * sifproxyarp - Make a proxy ARP entry for the peer.
1252 sifproxyarp(unit, hisaddr)
1256 struct arpreq arpreq;
1258 memset(&arpreq, 0, sizeof(arpreq));
1259 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1262 arpreq.arp_pa.sa_family = AF_INET;
1263 INET_ADDR(arpreq.arp_pa) = hisaddr;
1264 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1265 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1266 error("Couldn't set proxy ARP entry: %m");
1270 proxy_arp_addr = hisaddr;
1275 * cifproxyarp - Delete the proxy ARP entry for the peer.
1278 cifproxyarp(unit, hisaddr)
1282 struct arpreq arpreq;
1284 memset(&arpreq, 0, sizeof(arpreq));
1285 arpreq.arp_pa.sa_family = AF_INET;
1286 INET_ADDR(arpreq.arp_pa) = hisaddr;
1287 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1288 error("Couldn't delete proxy ARP entry: %m");
1297 * get_ether_addr - get the hardware address of an interface on the
1298 * the same subnet as ipaddr.
1303 get_ether_addr(ipaddr, hwaddr)
1305 struct sockaddr *hwaddr;
1307 struct ifreq *ifr, *ifend, ifreq;
1310 u_int32_t ina, mask;
1313 * Scan through the system's network interfaces.
1316 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1319 ifc.ifc_len = nif * sizeof(struct ifreq);
1320 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1321 if (ifc.ifc_buf == 0)
1323 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1324 warn("Couldn't get system interface list: %m");
1328 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1329 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1330 if (ifr->ifr_addr.sa_family != AF_INET)
1333 * Check that the interface is up, and not point-to-point or loopback.
1335 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1336 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1338 if ((ifreq.ifr_flags &
1339 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1340 != (IFF_UP|IFF_BROADCAST))
1343 * Get its netmask and check that it's on the right subnet.
1345 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1347 ina = INET_ADDR(ifr->ifr_addr);
1348 mask = INET_ADDR(ifreq.ifr_addr);
1349 if ((ipaddr & mask) == (ina & mask))
1354 warn("No suitable interface found for proxy ARP");
1359 info("found interface %s for proxy ARP", ifr->ifr_name);
1360 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
1361 error("Couldn't get hardware address for %s", ifr->ifr_name);
1371 * get_hw_addr - obtain the hardware address for a named interface.
1374 get_hw_addr(name, ina, hwaddr)
1377 struct sockaddr *hwaddr;
1380 /* New way - get the address by doing an arp request. */
1384 s = socket(AF_INET, SOCK_DGRAM, 0);
1387 memset(&req, 0, sizeof(req));
1388 req.arp_pa.sa_family = AF_INET;
1389 INET_ADDR(req.arp_pa) = ina;
1390 if (ioctl(s, SIOCGARP, &req) < 0) {
1391 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
1394 *hwaddr = req.arp_ha;
1395 hwaddr->sa_family = AF_UNSPEC;
1399 int unit, iffd, adrlen;
1400 unsigned char *adrp;
1403 union DL_primitives prim;
1408 * We have to open the device and ask it for its hardware address.
1409 * First split apart the device name and unit.
1411 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
1412 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
1419 * Open the device and do a DLPI attach and phys_addr_req.
1421 iffd = open(ifdev, O_RDWR);
1423 error("Can't open %s: %m", ifdev);
1426 if (dlpi_attach(iffd, unit) < 0
1427 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1428 || dlpi_info_req(iffd) < 0
1429 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1434 adrlen = reply.prim.info_ack.dl_addr_length;
1435 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1436 #if DL_CURRENT_VERSION >= 2
1437 if (reply.prim.info_ack.dl_sap_length < 0)
1438 adrlen += reply.prim.info_ack.dl_sap_length;
1440 adrp += reply.prim.info_ack.dl_sap_length;
1442 hwaddr->sa_family = AF_UNSPEC;
1443 memcpy(hwaddr->sa_data, adrp, adrlen);
1450 dlpi_attach(fd, ppa)
1453 dl_attach_req_t req;
1456 req.dl_primitive = DL_ATTACH_REQ;
1458 buf.len = sizeof(req);
1459 buf.buf = (void *) &req;
1460 return putmsg(fd, &buf, NULL, RS_HIPRI);
1470 req.dl_primitive = DL_INFO_REQ;
1471 buf.len = sizeof(req);
1472 buf.buf = (void *) &req;
1473 return putmsg(fd, &buf, NULL, RS_HIPRI);
1477 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1478 union DL_primitives *reply;
1479 int fd, expected_prim, maxlen;
1486 * Use poll to wait for a message with a timeout.
1489 pfd.events = POLLIN | POLLPRI;
1491 n = poll(&pfd, 1, 1000);
1492 } while (n == -1 && errno == EINTR);
1499 buf.maxlen = maxlen;
1500 buf.buf = (void *) reply;
1502 if (getmsg(fd, &buf, NULL, &flags) < 0)
1505 if (buf.len < sizeof(ulong)) {
1507 dbglog("dlpi response short (len=%d)\n", buf.len);
1511 if (reply->dl_primitive == expected_prim)
1515 if (reply->dl_primitive == DL_ERROR_ACK) {
1516 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
1517 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1518 reply->error_ack.dl_error_primitive);
1520 dbglog("dlpi unexpected response prim %x\n",
1521 reply->dl_primitive);
1529 * Return user specified netmask, modified by any mask we might determine
1530 * for address `addr' (in network byte order).
1531 * Here we scan through the system's list of interfaces, looking for
1532 * any non-point-to-point interfaces which might appear to be on the same
1533 * network as `addr'. If we find any, we OR in their netmask to the
1534 * user-specified netmask.
1540 u_int32_t mask, nmask, ina;
1541 struct ifreq *ifr, *ifend, ifreq;
1546 if (IN_CLASSA(addr)) /* determine network mask for address class */
1547 nmask = IN_CLASSA_NET;
1548 else if (IN_CLASSB(addr))
1549 nmask = IN_CLASSB_NET;
1551 nmask = IN_CLASSC_NET;
1552 /* class D nets are disallowed by bad_ip_adrs */
1553 mask = netmask | htonl(nmask);
1556 * Scan through the system's network interfaces.
1559 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1562 ifc.ifc_len = nif * sizeof(struct ifreq);
1563 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1564 if (ifc.ifc_buf == 0)
1566 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1567 warn("Couldn't get system interface list: %m");
1571 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1572 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1574 * Check the interface's internet address.
1576 if (ifr->ifr_addr.sa_family != AF_INET)
1578 ina = INET_ADDR(ifr->ifr_addr);
1579 if ((ntohl(ina) & nmask) != (addr & nmask))
1582 * Check that the interface is up, and not point-to-point or loopback.
1584 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1585 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1587 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1591 * Get its netmask and OR it into our mask.
1593 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1595 mask |= INET_ADDR(ifreq.ifr_addr);
1603 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1606 logwtmp(line, name, host)
1607 const char *line, *name, *host;
1609 static struct utmpx utmpx;
1613 strlcpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1614 strlcpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1615 strlcpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1616 utmpx.ut_pid = getpid();
1617 utmpx.ut_type = USER_PROCESS;
1619 utmpx.ut_type = DEAD_PROCESS;
1621 gettimeofday(&utmpx.ut_tv, NULL);
1622 updwtmpx("/var/adm/wtmpx", &utmpx);
1626 * get_host_seed - return the serial number of this machine.
1633 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1634 error("sysinfo: %m");
1637 return (int) strtoul(buf, NULL, 16);
1641 strioctl(fd, cmd, ptr, ilen, olen)
1642 int fd, cmd, ilen, olen;
1645 struct strioctl str;
1651 if (ioctl(fd, I_STR, &str) == -1)
1653 if (str.ic_len != olen)
1654 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
1655 olen, str.ic_len, cmd);
1660 * lock - create a lock file for the named lock device
1663 #define LOCK_PREFIX "/var/spool/locks/LK."
1664 static char lock_file[40]; /* name of lock file created */
1674 if (stat(dev, &sbuf) < 0) {
1675 error("Can't get device number for %s: %m", dev);
1678 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1679 error("Can't lock %s: not a character device", dev);
1682 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
1683 LOCK_PREFIX, major(sbuf.st_dev),
1684 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1686 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1688 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1689 /* Read the lock file to find out who has the device locked */
1690 n = read(fd, ascii_pid, 11);
1692 error("Can't read pid from lock file %s", lock_file);
1696 pid = atoi(ascii_pid);
1697 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1698 /* pid no longer exists - remove the lock file */
1699 if (unlink(lock_file) == 0) {
1701 notice("Removed stale lock on %s (pid %d)",
1705 warn("Couldn't remove stale lock on %s",
1708 notice("Device %s is locked by pid %d",
1713 error("Can't create lock file %s: %m", lock_file);
1718 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
1719 write(fd, ascii_pid, 11);
1726 * unlock - remove our lockfile
1739 * cifroute - delete a route through the addresses given.
1742 cifroute(u, our, his)
1748 memset(&rt, 0, sizeof(rt));
1749 rt.rt_dst.sa_family = AF_INET;
1750 INET_ADDR(rt.rt_dst) = his;
1751 rt.rt_gateway.sa_family = AF_INET;
1752 INET_ADDR(rt.rt_gateway) = our;
1753 rt.rt_flags = RTF_HOST;
1755 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1756 error("Can't delete route: %m");
1764 * have_route_to - determine if the system has a route to the specified
1765 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
1766 * `addr' is in network byte order.
1767 * For demand mode to work properly, we have to ignore routes
1768 * through our own interface.
1770 #ifndef T_CURRENT /* needed for Solaris 2.5 */
1771 #define T_CURRENT MI_T_CURRENT
1778 int fd, r, flags, i;
1780 struct T_optmgmt_req req;
1784 struct T_optmgmt_ack ack;
1785 unsigned char space[64];
1788 struct strbuf cbuf, dbuf;
1790 mib2_ipRouteEntry_t routes[8];
1791 mib2_ipRouteEntry_t *rp;
1793 fd = open("/dev/ip", O_RDWR);
1795 warn("have_route_to: couldn't open /dev/ip: %m");
1799 req.req.PRIM_type = T_OPTMGMT_REQ;
1800 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
1801 req.req.OPT_length = sizeof(req.hdr);
1802 req.req.MGMT_flags = T_CURRENT;
1804 req.hdr.level = MIB2_IP;
1808 cbuf.buf = (char *) &req;
1809 cbuf.len = sizeof(req);
1811 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
1812 warn("have_route_to: putmsg: %m");
1818 cbuf.buf = (char *) &ack;
1819 cbuf.maxlen = sizeof(ack);
1820 dbuf.buf = (char *) routes;
1821 dbuf.maxlen = sizeof(routes);
1823 r = getmsg(fd, &cbuf, &dbuf, &flags);
1825 warn("have_route_to: getmsg: %m");
1830 if (cbuf.len < sizeof(struct T_optmgmt_ack)
1831 || ack.ack.PRIM_type != T_OPTMGMT_ACK
1832 || ack.ack.MGMT_flags != T_SUCCESS
1833 || ack.ack.OPT_length < sizeof(struct opthdr)) {
1834 dbglog("have_route_to: bad message len=%d prim=%d",
1835 cbuf.len, ack.ack.PRIM_type);
1840 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
1841 if (rh->level == 0 && rh->name == 0)
1843 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
1844 while (r == MOREDATA)
1845 r = getmsg(fd, NULL, &dbuf, &flags);
1850 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
1851 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
1852 if (rp->ipRouteMask != ~0) {
1853 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
1854 rp->ipRouteDest, rp->ipRouteNextHop,
1856 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
1857 && rp->ipRouteNextHop != remote_addr)
1863 r = getmsg(fd, NULL, &dbuf, &flags);
1871 * get_pty - get a pty master/slave pair and chown the slave side to
1872 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
1875 get_pty(master_fdp, slave_fdp, slave_name, uid)
1883 struct termios tios;
1885 mfd = open("/dev/ptmx", O_RDWR);
1887 error("Couldn't open pty master: %m");
1891 pty_name = ptsname(mfd);
1892 if (pty_name == NULL) {
1893 error("Couldn't get name of pty slave");
1897 if (chown(pty_name, uid, -1) < 0)
1898 warn("Couldn't change owner of pty slave: %m");
1899 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
1900 warn("Couldn't change permissions on pty slave: %m");
1901 if (unlockpt(mfd) < 0)
1902 warn("Couldn't unlock pty slave: %m");
1904 sfd = open(pty_name, O_RDWR);
1906 error("Couldn't open pty slave %s: %m", pty_name);
1910 if (ioctl(sfd, I_PUSH, "ptem") < 0)
1911 warn("Couldn't push ptem module on pty slave: %m");
1913 dbglog("Using %s", pty_name);
1914 strlcpy(slave_name, pty_name, MAXPATHLEN);