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 1.31 1999/06/24 00:18:41 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>
64 #include <sys/tihdr.h>
65 #include <sys/tiuser.h>
66 #include <inet/common.h>
67 #include <inet/mib2.h>
73 static int fdmuxid = -1;
75 static int ipmuxid = -1;
77 static int restore_term;
78 static struct termios inittermios;
80 static struct termiox inittermiox;
81 static int termiox_ok;
83 static struct winsize wsinfo; /* Initial window size info */
84 static pid_t tty_sid; /* original session ID for terminal */
86 extern u_char inpacket_buf[]; /* borrowed from main.c */
88 #define MAX_POLLFDS 32
89 static struct pollfd pollfds[MAX_POLLFDS];
92 static int link_mtu, link_mru;
95 static int tty_nmodules;
96 static char tty_modules[NMODULES][FMNAMESZ+1];
97 static int tty_npushed;
99 static int if_is_up; /* Interface has been marked up */
100 static u_int32_t remote_addr; /* IP address of peer */
101 static u_int32_t default_route_gateway; /* Gateway for default route added */
102 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
104 /* Prototypes for procedures local to this file. */
105 static int translate_speed __P((int));
106 static int baud_rate_of __P((int));
107 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
108 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
109 static int dlpi_attach __P((int, int));
110 static int dlpi_info_req __P((int));
111 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
112 static int strioctl __P((int, int, void *, int, int));
116 * sys_init - System-dependent initialization.
125 union DL_primitives prim;
130 ipfd = open("/dev/ip", O_RDWR, 0);
132 fatal("Couldn't open IP device: %m");
134 if (default_device && !notty)
135 tty_sid = getsid((pid_t)0);
137 pppfd = open("/dev/ppp", O_RDWR | O_NONBLOCK, 0);
139 fatal("Can't open /dev/ppp: %m");
140 if (kdebugflag & 1) {
141 x = PPPDBG_LOG + PPPDBG_DRIVER;
142 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
145 /* Assign a new PPA and get its unit number. */
146 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
147 fatal("Can't create new PPP interface: %m");
150 * Open the ppp device again and link it under the ip multiplexor.
151 * IP will assign a unit number which hopefully is the same as ifunit.
152 * I don't know any way to be certain they will be the same. :-(
154 ifd = open("/dev/ppp", O_RDWR, 0);
156 fatal("Can't open /dev/ppp (2): %m");
157 if (kdebugflag & 1) {
158 x = PPPDBG_LOG + PPPDBG_DRIVER;
159 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
162 if (ioctl(ifd, I_PUSH, "ip") < 0) {
164 fatal("Can't push IP module: %m");
167 if (dlpi_attach(ifd, ifunit) < 0 ||
168 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
170 fatal("Can't attach to ppp%d: %m", ifunit);
173 ipmuxid = ioctl(ipfd, I_LINK, ifd);
176 fatal("Can't link PPP device to IP: %m");
179 /* Set the interface name for the link. */
180 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
181 ifr.ifr_metric = ipmuxid;
182 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
183 fatal("Can't set interface name %s: %m", ifr.ifr_name);
190 * sys_cleanup - restore any system state we modified before exiting:
191 * mark the interface down, delete default route and/or proxy arp entry.
192 * This should call die() because it's called from die().
201 if (default_route_gateway)
202 cifdefaultroute(0, default_route_gateway, default_route_gateway);
204 cifproxyarp(0, proxy_arp_addr);
208 * sys_close - Clean up in a child process before execing.
219 * sys_check_options - check the options that the user specified
229 * daemon - Detach us from controlling terminal session.
232 daemon(nochdir, noclose)
233 int nochdir, noclose;
237 if ((pid = fork()) < 0)
240 exit(0); /* parent dies */
245 fclose(stdin); /* don't need stdin, stdout, stderr */
254 * ppp_available - check whether the system has any ppp interfaces
261 return stat("/dev/ppp", &buf) >= 0;
265 * establish_ppp - Turn the serial port into a ppp interface.
273 /* Pop any existing modules off the tty stream. */
275 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
276 || strcmp(tty_modules[i], "ptem") == 0
277 || ioctl(fd, I_POP, 0) < 0)
281 /* Push the async hdlc module and the compressor module. */
283 if (ioctl(fd, I_PUSH, "ppp_ahdl") < 0) {
284 error("Couldn't push PPP Async HDLC module: %m");
288 if (kdebugflag & 4) {
289 i = PPPDBG_LOG + PPPDBG_AHDLC;
290 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
292 if (ioctl(fd, I_PUSH, "ppp_comp") < 0)
293 error("Couldn't push PPP compression module: %m");
296 if (kdebugflag & 2) {
297 i = PPPDBG_LOG + PPPDBG_COMP;
298 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
301 /* Link the serial port under the PPP multiplexor. */
302 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
303 error("Can't link tty to PPP mux: %m");
311 * restore_loop - reattach the ppp unit to the loopback.
312 * This doesn't need to do anything because disestablish_ppp does it.
320 * disestablish_ppp - Restore the serial port to normal operation.
321 * It attempts to reconstruct the stream with the previously popped
322 * modules. This shouldn't call die() because it's called from die().
331 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
333 error("Can't unlink tty from PPP mux: %m");
338 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
340 for (i = tty_nmodules - 1; i >= 0; --i)
341 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
342 error("Couldn't restore tty module %s: %m",
345 if (hungup && default_device && tty_sid > 0) {
347 * If we have received a hangup, we need to send a SIGHUP
348 * to the terminal's controlling process. The reason is
349 * that the original stream head for the terminal hasn't
350 * seen the M_HANGUP message (it went up through the ppp
351 * driver to the stream head for our fd to /dev/ppp).
353 kill(tty_sid, SIGHUP);
359 * Check whether the link seems not to be 8-bit clean.
367 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
372 s = "bit 7 set to 1";
375 s = "bit 7 set to 0";
385 warn("Serial link is not 8-bit clean:");
386 warn("All received characters had %s", s);
391 * List of valid speeds.
394 int speed_int, speed_val;
469 * Translate from bits/second to a speed_t.
475 struct speed *speedp;
479 for (speedp = speeds; speedp->speed_int; speedp++)
480 if (bps == speedp->speed_int)
481 return speedp->speed_val;
482 warn("speed %d not supported", bps);
487 * Translate from a speed_t to bits/second.
493 struct speed *speedp;
497 for (speedp = speeds; speedp->speed_int; speedp++)
498 if (speed == speedp->speed_val)
499 return speedp->speed_int;
504 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
505 * at the requested speed, etc. If `local' is true, set CLOCAL
506 * regardless of whether the modem option was specified.
509 set_up_tty(fd, local)
514 #if !defined (CRTSCTS)
518 if (tcgetattr(fd, &tios) < 0)
519 fatal("tcgetattr: %m");
523 if (ioctl (fd, TCGETX, &tiox) < 0) {
535 ioctl(fd, TIOCGWINSZ, &wsinfo);
538 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
541 tios.c_cflag |= CRTSCTS;
542 else if (crtscts < 0)
543 tios.c_cflag &= ~CRTSCTS;
545 if (crtscts != 0 && !termiox_ok) {
546 error("Can't set RTS/CTS flow control");
547 } else if (crtscts > 0) {
548 tiox.x_hflag |= RTSXOFF|CTSXON;
549 } else if (crtscts < 0) {
550 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
554 tios.c_cflag |= CS8 | CREAD | HUPCL;
556 tios.c_cflag |= CLOCAL;
557 tios.c_iflag = IGNBRK | IGNPAR;
561 tios.c_cc[VTIME] = 0;
564 tios.c_iflag |= IXON | IXOFF;
565 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
566 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
569 speed = translate_speed(inspeed);
571 cfsetospeed(&tios, speed);
572 cfsetispeed(&tios, speed);
574 speed = cfgetospeed(&tios);
576 * We can't proceed if the serial port speed is 0,
577 * since that implies that the serial port is disabled.
580 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
583 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0)
584 fatal("tcsetattr: %m");
587 if (termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
588 error("TCSETXF: %m");
592 baud_rate = inspeed = baud_rate_of(speed);
597 * restore_tty - restore the terminal to the saved settings.
604 if (!default_device) {
606 * Turn off echoing, because otherwise we can get into
607 * a loop with the tty and the modem echoing to each other.
608 * We presume we are the sole user of this tty device, so
609 * when we close it, it will revert to its defaults anyway.
611 inittermios.c_lflag &= ~(ECHO | ECHONL);
613 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
614 if (!hungup && errno != ENXIO)
615 warn("tcsetattr: %m");
617 if (ioctl (fd, TCSETXF, &inittermiox) < 0){
618 if (!hungup && errno != ENXIO)
619 error("TCSETXF: %m");
622 ioctl(fd, TIOCSWINSZ, &wsinfo);
628 * setdtr - control the DTR line on the serial port.
629 * This is called from die(), so it shouldn't call die().
635 int modembits = TIOCM_DTR;
637 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
641 * open_loopback - open the device we use for getting packets
642 * in demand mode. Under Solaris 2, we use our existing fd
652 * output - Output PPP packet.
665 dbglog("sent %P", p, len);
668 data.buf = (caddr_t) p;
670 while (putmsg(pppfd, NULL, &data, 0) < 0) {
671 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
673 error("Couldn't send packet: %m");
677 pfd.events = POLLOUT;
678 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
684 * wait_input - wait until there is data available,
685 * for the length of time specified by *timo (indefinite
690 struct timeval *timo;
694 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
695 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
700 * add_fd - add an fd to the set that wait_input waits for.
707 for (n = 0; n < n_pollfds; ++n)
708 if (pollfds[n].fd == fd)
710 if (n_pollfds < MAX_POLLFDS) {
711 pollfds[n_pollfds].fd = fd;
712 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
715 error("Too many inputs!");
719 * remove_fd - remove an fd from the set that wait_input waits for.
726 for (n = 0; n < n_pollfds; ++n) {
727 if (pollfds[n].fd == fd) {
728 while (++n < n_pollfds)
729 pollfds[n-1] = pollfds[n];
738 * wait_loop_output - wait until there is data available on the
739 * loopback, for the length of time specified by *timo (indefinite
743 wait_loop_output(timo)
744 struct timeval *timo;
750 * wait_time - wait for a given length of time or until a
751 * signal is received.
755 struct timeval *timo;
759 n = select(0, NULL, NULL, NULL, timo);
760 if (n < 0 && errno != EINTR)
767 * read_packet - get a PPP packet from the serial device.
773 struct strbuf ctrl, data;
775 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
778 data.maxlen = PPP_MRU + PPP_HDRLEN;
779 data.buf = (caddr_t) buf;
780 ctrl.maxlen = sizeof(ctrlbuf);
781 ctrl.buf = (caddr_t) ctrlbuf;
783 len = getmsg(pppfd, &ctrl, &data, &flags);
785 if (errno == EAGAIN || errno == EINTR)
787 fatal("Error reading packet: %m");
794 * Got a M_PROTO or M_PCPROTO message. Interpret it
795 * as a DLPI primitive??
798 dbglog("got dlpi prim 0x%x, len=%d",
799 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
805 * get_loop_output - get outgoing packets from the ppp device,
806 * and detect when we want to bring the real link up.
807 * Return value is 1 if we need to bring up the link, 0 otherwise.
815 while ((len = read_packet(inpacket_buf)) > 0) {
816 if (loop_frame(inpacket_buf, len))
823 * ppp_send_config - configure the transmit characteristics of
827 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
836 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
837 if (hungup && errno == ENXIO)
839 error("Couldn't set MTU: %m");
842 /* can't set these if we don't have a stream attached below /dev/ppp */
843 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
844 error("Couldn't set transmit ACCM: %m");
846 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
847 cf[1] = COMP_PROT | COMP_AC;
848 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
849 error("Couldn't set prot/AC compression: %m");
853 /* set the MTU for IP as well */
854 memset(&ifr, 0, sizeof(ifr));
855 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
856 ifr.ifr_metric = link_mtu;
857 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
858 error("Couldn't set IP MTU: %m");
863 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
866 ppp_set_xaccm(unit, accm)
871 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
872 if (!hungup || errno != ENXIO)
873 warn("Couldn't set extended ACCM: %m");
878 * ppp_recv_config - configure the receive-side characteristics of
882 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
890 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
891 if (hungup && errno == ENXIO)
893 error("Couldn't set MRU: %m");
896 /* can't set these if we don't have a stream attached below /dev/ppp */
897 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
898 error("Couldn't set receive ACCM: %m");
900 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
901 cf[1] = DECOMP_PROT | DECOMP_AC;
902 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
903 error("Couldn't set prot/AC decompression: %m");
909 * ccp_test - ask kernel whether a given compression method
910 * is acceptable for use.
913 ccp_test(unit, opt_ptr, opt_len, for_transmit)
914 int unit, opt_len, for_transmit;
917 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
918 opt_ptr, opt_len, 0) >= 0)
920 return (errno == ENOSR)? 0: -1;
924 * ccp_flags_set - inform kernel about the current state of CCP.
927 ccp_flags_set(unit, isopen, isup)
928 int unit, isopen, isup;
932 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
933 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
934 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
935 if (!hungup || errno != ENXIO)
936 error("Couldn't set kernel CCP state: %m");
941 * get_idle_time - return how long the link has been idle.
948 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
952 * get_ppp_stats - return statistics for the link.
955 get_ppp_stats(u, stats)
957 struct pppd_stats *stats;
961 if (strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
962 error("Couldn't get link statistics: %m");
965 stats->bytes_in = s.p.ppp_ibytes;
966 stats->bytes_out = s.p.ppp_obytes;
972 * set_filters - transfer the pass and active filters to the kernel.
975 set_filters(pass, active)
976 struct bpf_program *pass, *active;
980 if (pass->bf_len > 0) {
981 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
982 sizeof(struct bpf_program), 0) < 0) {
983 error("Couldn't set pass-filter in kernel: %m");
987 if (active->bf_len > 0) {
988 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
989 sizeof(struct bpf_program), 0) < 0) {
990 error("Couldn't set active-filter in kernel: %m");
999 * ccp_fatal_error - returns 1 if decompression was disabled as a
1000 * result of an error detected after decompression of a packet,
1001 * 0 otherwise. This is necessary because of patent nonsense.
1004 ccp_fatal_error(unit)
1010 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1011 if (errno != ENXIO && errno != EINVAL)
1012 error("Couldn't get compression flags: %m");
1015 return cf[0] & CCP_FATALERROR;
1019 * sifvjcomp - config tcp header compression
1022 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1023 int u, vjcomp, xcidcomp, xmaxcid;
1029 maxcid[0] = xcidcomp;
1030 maxcid[1] = 15; /* XXX should be rmaxcid */
1031 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1032 error("Couldn't initialize VJ compression: %m");
1036 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1037 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1038 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1039 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1041 error("Couldn't enable VJ compression: %m");
1048 * sifup - Config the interface up and enable IP packets to pass.
1056 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1057 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1058 error("Couldn't mark interface up (get): %m");
1061 ifr.ifr_flags |= IFF_UP;
1062 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1063 error("Couldn't mark interface up (set): %m");
1071 * sifdown - Config the interface down and disable IP.
1081 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1082 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1083 error("Couldn't mark interface down (get): %m");
1086 ifr.ifr_flags &= ~IFF_UP;
1087 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1088 error("Couldn't mark interface down (set): %m");
1096 * sifnpmode - Set the mode for handling packets for a given NP.
1099 sifnpmode(u, proto, mode)
1107 npi[1] = (int) mode;
1108 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1109 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1115 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1118 * sifaddr - Config the interface IP addresses and netmask.
1128 memset(&ifr, 0, sizeof(ifr));
1129 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1130 ifr.ifr_addr.sa_family = AF_INET;
1131 INET_ADDR(ifr.ifr_addr) = m;
1132 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1133 error("Couldn't set IP netmask: %m");
1136 ifr.ifr_addr.sa_family = AF_INET;
1137 INET_ADDR(ifr.ifr_addr) = o;
1138 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1139 error("Couldn't set local IP address: %m");
1144 * On some systems, we have to explicitly set the point-to-point
1145 * flag bit before we can set a destination address.
1147 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1148 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1149 ifr.ifr_flags |= IFF_POINTOPOINT;
1150 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1151 error("Couldn't mark interface pt-to-pt: %m");
1155 ifr.ifr_dstaddr.sa_family = AF_INET;
1156 INET_ADDR(ifr.ifr_dstaddr) = h;
1157 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1158 error("Couldn't set remote IP address: %m");
1161 #if 0 /* now done in ppp_send_config */
1162 ifr.ifr_metric = link_mtu;
1163 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1164 error("Couldn't set IP MTU: %m");
1173 * cifaddr - Clear the interface IP addresses, and delete routes
1174 * through the interface if possible.
1181 #if defined(__USLC__) /* was: #if 0 */
1182 cifroute(unit, ouraddr, hisaddr);
1184 notice("Removing ppp interface unit");
1185 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1186 error("Can't remove ppp interface unit: %m");
1197 * sifdefaultroute - assign a default route through the address given.
1200 sifdefaultroute(u, l, g)
1206 #if defined(__USLC__)
1207 g = l; /* use the local address as gateway */
1209 memset(&rt, 0, sizeof(rt));
1210 rt.rt_dst.sa_family = AF_INET;
1211 INET_ADDR(rt.rt_dst) = 0;
1212 rt.rt_gateway.sa_family = AF_INET;
1213 INET_ADDR(rt.rt_gateway) = g;
1214 rt.rt_flags = RTF_GATEWAY;
1216 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1217 error("Can't add default route: %m");
1221 default_route_gateway = g;
1226 * cifdefaultroute - delete a default route through the address given.
1229 cifdefaultroute(u, l, g)
1235 #if defined(__USLC__)
1236 g = l; /* use the local address as gateway */
1238 memset(&rt, 0, sizeof(rt));
1239 rt.rt_dst.sa_family = AF_INET;
1240 INET_ADDR(rt.rt_dst) = 0;
1241 rt.rt_gateway.sa_family = AF_INET;
1242 INET_ADDR(rt.rt_gateway) = g;
1243 rt.rt_flags = RTF_GATEWAY;
1245 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1246 error("Can't delete default route: %m");
1250 default_route_gateway = 0;
1255 * sifproxyarp - Make a proxy ARP entry for the peer.
1258 sifproxyarp(unit, hisaddr)
1262 struct arpreq arpreq;
1264 memset(&arpreq, 0, sizeof(arpreq));
1265 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1268 arpreq.arp_pa.sa_family = AF_INET;
1269 INET_ADDR(arpreq.arp_pa) = hisaddr;
1270 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1271 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1272 error("Couldn't set proxy ARP entry: %m");
1276 proxy_arp_addr = hisaddr;
1281 * cifproxyarp - Delete the proxy ARP entry for the peer.
1284 cifproxyarp(unit, hisaddr)
1288 struct arpreq arpreq;
1290 memset(&arpreq, 0, sizeof(arpreq));
1291 arpreq.arp_pa.sa_family = AF_INET;
1292 INET_ADDR(arpreq.arp_pa) = hisaddr;
1293 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1294 error("Couldn't delete proxy ARP entry: %m");
1303 * get_ether_addr - get the hardware address of an interface on the
1304 * the same subnet as ipaddr.
1309 get_ether_addr(ipaddr, hwaddr)
1311 struct sockaddr *hwaddr;
1313 struct ifreq *ifr, *ifend, ifreq;
1316 u_int32_t ina, mask;
1319 * Scan through the system's network interfaces.
1322 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1325 ifc.ifc_len = nif * sizeof(struct ifreq);
1326 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1327 if (ifc.ifc_buf == 0)
1329 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1330 warn("Couldn't get system interface list: %m");
1334 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1335 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1336 if (ifr->ifr_addr.sa_family != AF_INET)
1339 * Check that the interface is up, and not point-to-point or loopback.
1341 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1342 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1344 if ((ifreq.ifr_flags &
1345 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1346 != (IFF_UP|IFF_BROADCAST))
1349 * Get its netmask and check that it's on the right subnet.
1351 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1353 ina = INET_ADDR(ifr->ifr_addr);
1354 mask = INET_ADDR(ifreq.ifr_addr);
1355 if ((ipaddr & mask) == (ina & mask))
1360 warn("No suitable interface found for proxy ARP");
1365 info("found interface %s for proxy ARP", ifr->ifr_name);
1366 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
1367 error("Couldn't get hardware address for %s", ifr->ifr_name);
1377 * get_hw_addr - obtain the hardware address for a named interface.
1380 get_hw_addr(name, ina, hwaddr)
1383 struct sockaddr *hwaddr;
1386 /* New way - get the address by doing an arp request. */
1390 s = socket(AF_INET, SOCK_DGRAM, 0);
1393 memset(&req, 0, sizeof(req));
1394 req.arp_pa.sa_family = AF_INET;
1395 INET_ADDR(req.arp_pa) = ina;
1396 if (ioctl(s, SIOCGARP, &req) < 0) {
1397 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
1400 *hwaddr = req.arp_ha;
1401 hwaddr->sa_family = AF_UNSPEC;
1405 int unit, iffd, adrlen;
1406 unsigned char *adrp;
1409 union DL_primitives prim;
1414 * We have to open the device and ask it for its hardware address.
1415 * First split apart the device name and unit.
1417 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
1418 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
1425 * Open the device and do a DLPI attach and phys_addr_req.
1427 iffd = open(ifdev, O_RDWR);
1429 error("Can't open %s: %m", ifdev);
1432 if (dlpi_attach(iffd, unit) < 0
1433 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
1434 || dlpi_info_req(iffd) < 0
1435 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
1440 adrlen = reply.prim.info_ack.dl_addr_length;
1441 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
1442 #if DL_CURRENT_VERSION >= 2
1443 if (reply.prim.info_ack.dl_sap_length < 0)
1444 adrlen += reply.prim.info_ack.dl_sap_length;
1446 adrp += reply.prim.info_ack.dl_sap_length;
1448 hwaddr->sa_family = AF_UNSPEC;
1449 memcpy(hwaddr->sa_data, adrp, adrlen);
1456 dlpi_attach(fd, ppa)
1459 dl_attach_req_t req;
1462 req.dl_primitive = DL_ATTACH_REQ;
1464 buf.len = sizeof(req);
1465 buf.buf = (void *) &req;
1466 return putmsg(fd, &buf, NULL, RS_HIPRI);
1476 req.dl_primitive = DL_INFO_REQ;
1477 buf.len = sizeof(req);
1478 buf.buf = (void *) &req;
1479 return putmsg(fd, &buf, NULL, RS_HIPRI);
1483 dlpi_get_reply(fd, reply, expected_prim, maxlen)
1484 union DL_primitives *reply;
1485 int fd, expected_prim, maxlen;
1492 * Use poll to wait for a message with a timeout.
1495 pfd.events = POLLIN | POLLPRI;
1497 n = poll(&pfd, 1, 1000);
1498 } while (n == -1 && errno == EINTR);
1505 buf.maxlen = maxlen;
1506 buf.buf = (void *) reply;
1508 if (getmsg(fd, &buf, NULL, &flags) < 0)
1511 if (buf.len < sizeof(ulong)) {
1513 dbglog("dlpi response short (len=%d)\n", buf.len);
1517 if (reply->dl_primitive == expected_prim)
1521 if (reply->dl_primitive == DL_ERROR_ACK) {
1522 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
1523 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
1524 reply->error_ack.dl_error_primitive);
1526 dbglog("dlpi unexpected response prim %x\n",
1527 reply->dl_primitive);
1535 * Return user specified netmask, modified by any mask we might determine
1536 * for address `addr' (in network byte order).
1537 * Here we scan through the system's list of interfaces, looking for
1538 * any non-point-to-point interfaces which might appear to be on the same
1539 * network as `addr'. If we find any, we OR in their netmask to the
1540 * user-specified netmask.
1546 u_int32_t mask, nmask, ina;
1547 struct ifreq *ifr, *ifend, ifreq;
1552 if (IN_CLASSA(addr)) /* determine network mask for address class */
1553 nmask = IN_CLASSA_NET;
1554 else if (IN_CLASSB(addr))
1555 nmask = IN_CLASSB_NET;
1557 nmask = IN_CLASSC_NET;
1558 /* class D nets are disallowed by bad_ip_adrs */
1559 mask = netmask | htonl(nmask);
1562 * Scan through the system's network interfaces.
1565 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1568 ifc.ifc_len = nif * sizeof(struct ifreq);
1569 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1570 if (ifc.ifc_buf == 0)
1572 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1573 warn("Couldn't get system interface list: %m");
1577 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1578 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1580 * Check the interface's internet address.
1582 if (ifr->ifr_addr.sa_family != AF_INET)
1584 ina = INET_ADDR(ifr->ifr_addr);
1585 if ((ntohl(ina) & nmask) != (addr & nmask))
1588 * Check that the interface is up, and not point-to-point or loopback.
1590 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1591 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1593 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
1597 * Get its netmask and OR it into our mask.
1599 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1601 mask |= INET_ADDR(ifreq.ifr_addr);
1609 * logwtmp - write an accounting record to the /var/adm/wtmp file.
1612 logwtmp(line, name, host)
1613 const char *line, *name, *host;
1615 static struct utmpx utmpx;
1619 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
1620 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
1621 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
1622 utmpx.ut_pid = getpid();
1623 utmpx.ut_type = USER_PROCESS;
1625 utmpx.ut_type = DEAD_PROCESS;
1627 gettimeofday(&utmpx.ut_tv, NULL);
1628 updwtmpx("/var/adm/wtmpx", &utmpx);
1632 * get_host_seed - return the serial number of this machine.
1639 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
1640 error("sysinfo: %m");
1643 return (int) strtoul(buf, NULL, 16);
1647 strioctl(fd, cmd, ptr, ilen, olen)
1648 int fd, cmd, ilen, olen;
1651 struct strioctl str;
1657 if (ioctl(fd, I_STR, &str) == -1)
1659 if (str.ic_len != olen)
1660 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
1661 olen, str.ic_len, cmd);
1667 * lock - create a lock file for the named lock device
1670 #define LOCK_PREFIX "/var/spool/locks/LK."
1671 static char lock_file[40]; /* name of lock file created */
1681 if (stat(dev, &sbuf) < 0) {
1682 error("Can't get device number for %s: %m", dev);
1685 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
1686 error("Can't lock %s: not a character device", dev);
1689 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
1690 LOCK_PREFIX, major(sbuf.st_dev),
1691 major(sbuf.st_rdev), minor(sbuf.st_rdev));
1693 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1695 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1696 /* Read the lock file to find out who has the device locked */
1697 n = read(fd, ascii_pid, 11);
1699 error("Can't read pid from lock file %s", lock_file);
1703 pid = atoi(ascii_pid);
1704 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
1705 /* pid no longer exists - remove the lock file */
1706 if (unlink(lock_file) == 0) {
1708 notice("Removed stale lock on %s (pid %d)",
1712 warn("Couldn't remove stale lock on %s",
1715 notice("Device %s is locked by pid %d",
1720 error("Can't create lock file %s: %m", lock_file);
1725 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
1726 write(fd, ascii_pid, 11);
1733 * unlock - remove our lockfile
1746 * cifroute - delete a route through the addresses given.
1749 cifroute(u, our, his)
1755 memset(&rt, 0, sizeof(rt));
1756 rt.rt_dst.sa_family = AF_INET;
1757 INET_ADDR(rt.rt_dst) = his;
1758 rt.rt_gateway.sa_family = AF_INET;
1759 INET_ADDR(rt.rt_gateway) = our;
1760 rt.rt_flags = RTF_HOST;
1762 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1763 error("Can't delete route: %m");
1771 * have_route_to - determine if the system has a route to the specified
1772 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
1773 * `addr' is in network byte order.
1774 * For demand mode to work properly, we have to ignore routes
1775 * through our own interface.
1777 #ifndef T_CURRENT /* needed for Solaris 2.5 */
1778 #define T_CURRENT MI_T_CURRENT
1786 int fd, r, flags, i;
1788 struct T_optmgmt_req req;
1792 struct T_optmgmt_ack ack;
1793 unsigned char space[64];
1796 struct strbuf cbuf, dbuf;
1798 mib2_ipRouteEntry_t routes[8];
1799 mib2_ipRouteEntry_t *rp;
1801 fd = open("/dev/ip", O_RDWR);
1803 warn("have_route_to: couldn't open /dev/ip: %m");
1807 req.req.PRIM_type = T_OPTMGMT_REQ;
1808 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
1809 req.req.OPT_length = sizeof(req.hdr);
1810 req.req.MGMT_flags = T_CURRENT;
1812 req.hdr.level = MIB2_IP;
1816 cbuf.buf = (char *) &req;
1817 cbuf.len = sizeof(req);
1819 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
1820 warn("have_route_to: putmsg: %m");
1826 cbuf.buf = (char *) &ack;
1827 cbuf.maxlen = sizeof(ack);
1828 dbuf.buf = (char *) routes;
1829 dbuf.maxlen = sizeof(routes);
1831 r = getmsg(fd, &cbuf, &dbuf, &flags);
1833 warn("have_route_to: getmsg: %m");
1838 if (cbuf.len < sizeof(struct T_optmgmt_ack)
1839 || ack.ack.PRIM_type != T_OPTMGMT_ACK
1840 || ack.ack.MGMT_flags != T_SUCCESS
1841 || ack.ack.OPT_length < sizeof(struct opthdr)) {
1842 dbglog("have_route_to: bad message len=%d prim=%d",
1843 cbuf.len, ack.ack.PRIM_type);
1848 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
1849 if (rh->level == 0 && rh->name == 0)
1851 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
1852 while (r == MOREDATA)
1853 r = getmsg(fd, NULL, &dbuf, &flags);
1858 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
1859 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
1860 if (rp->ipRouteMask != ~0) {
1861 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
1862 rp->ipRouteDest, rp->ipRouteNextHop,
1864 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
1865 && rp->ipRouteNextHop != remote_addr)
1871 r = getmsg(fd, NULL, &dbuf, &flags);
1882 * get_pty - get a pty master/slave pair and chown the slave side to
1883 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
1886 get_pty(master_fdp, slave_fdp, slave_name, uid)
1894 struct termios tios;
1896 mfd = open("/dev/ptmx", O_RDWR);
1898 error("Couldn't open pty master: %m");
1902 pty_name = ptsname(mfd);
1903 if (pty_name == NULL) {
1904 error("Couldn't get name of pty slave");
1908 if (chown(pty_name, uid, -1) < 0)
1909 warn("Couldn't change owner of pty slave: %m");
1910 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
1911 warn("Couldn't change permissions on pty slave: %m");
1912 if (unlockpt(mfd) < 0)
1913 warn("Couldn't unlock pty slave: %m");
1915 sfd = open(pty_name, O_RDWR);
1917 error("Couldn't open pty slave %s: %m", pty_name);
1921 if (ioctl(sfd, I_PUSH, "ptem") < 0)
1922 warn("Couldn't push ptem module on pty slave: %m");
1924 dbglog("Using %s", pty_name);
1925 strlcpy(slave_name, pty_name, MAXPATHLEN);