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,
28 #define RCSID "$Id: sys-svr4.c,v 1.41 2000/02/11 03:09:19 masputra Exp $"
40 #include <sys/termiox.h>
44 #include <sys/types.h>
45 #include <sys/ioccom.h>
46 #include <sys/stream.h>
47 #include <sys/stropts.h>
48 #include <sys/socket.h>
49 #include <sys/sockio.h>
50 #include <sys/sysmacros.h>
51 #include <sys/systeminfo.h>
54 #include <sys/mkdev.h>
56 #include <net/if_arp.h>
57 #include <net/route.h>
58 #include <net/ppp_defs.h>
59 #include <net/pppio.h>
60 #include <netinet/in.h>
62 #include <sys/tihdr.h>
63 #include <sys/tiuser.h>
64 #include <inet/common.h>
65 #include <inet/mib2.h>
66 #include <sys/ethernet.h>
75 #if !defined(PPP_DEV_NAME)
76 #define PPP_DEV_NAME "/dev/ppp"
77 #endif /* !defined(PPP_DEV_NAME) */
79 #if !defined(AHDLC_MOD_NAME)
80 #define AHDLC_MOD_NAME "ppp_ahdl"
81 #endif /* !defined(AHDLC_MOD_NAME) */
83 #if !defined(COMP_MOD_NAME)
84 #define COMP_MOD_NAME "ppp_comp"
85 #endif /* !defined(COMP_MOD_NAME) */
87 #if !defined(IP_DEV_NAME)
88 #define IP_DEV_NAME "/dev/ip"
89 #endif /* !defined(IP_DEV_NAME) */
91 #if !defined(IP_MOD_NAME)
92 #define IP_MOD_NAME "ip"
93 #endif /* !defined(IP_MOD_NAME) */
95 #if !defined(UDP_DEV_NAME) && defined(SOL2)
96 #define UDP_DEV_NAME "/dev/udp"
97 #endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */
99 #if !defined(UDP6_DEV_NAME) && defined(SOL2)
100 #define UDP6_DEV_NAME "/dev/udp6"
101 #endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */
103 static const char rcsid[] = RCSID;
107 * "/dev/udp" is used as a multiplexor to PLINK the interface stream
108 * under. It is used in place of "/dev/ip" since STREAMS will not let
109 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the
110 * driver at the bottom of the tunneling interfaces stream.
112 static char *mux_dev_name = UDP_DEV_NAME;
114 static char *mux_dev_name = IP_DEV_NAME;
117 static int fdmuxid = -1;
119 static int ipmuxid = -1;
121 #if defined(INET6) && defined(SOL2)
122 static int ip6fd; /* IP file descriptor */
123 static int ip6muxid = -1; /* Multiplexer file descriptor */
124 static int if6_is_up = 0; /* IPv6 interface has been marked up */
126 #define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \
127 s->sin6_addr.s6_addr32[0] = htonl(as); \
128 eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \
129 s->sin6_family = AF_INET6; \
130 l.lifr_addr.ss_family = AF_INET6; \
131 l.lifr_addrlen = 10; \
132 l.lifr_addr = laddr; \
135 #define IN6_LLADDR_FROM_EUI64(l, s, eui64) \
136 _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000)
138 #define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \
139 _IN6_LLX_FROM_EUI64(l, s, eui64, 0)
141 #endif /* defined(INET6) && defined(SOL2) */
143 static int restore_term;
144 static struct termios inittermios;
146 static struct termiox inittermiox;
147 static int termiox_ok;
149 static struct winsize wsinfo; /* Initial window size info */
150 static pid_t tty_sid; /* original session ID for terminal */
152 extern u_char inpacket_buf[]; /* borrowed from main.c */
154 #define MAX_POLLFDS 32
155 static struct pollfd pollfds[MAX_POLLFDS];
156 static int n_pollfds;
158 static int link_mtu, link_mru;
161 static int tty_nmodules;
162 static char tty_modules[NMODULES][FMNAMESZ+1];
163 static int tty_npushed;
165 static int if_is_up; /* Interface has been marked up */
166 static u_int32_t remote_addr; /* IP address of peer */
167 static u_int32_t default_route_gateway; /* Gateway for default route added */
168 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
170 /* Prototypes for procedures local to this file. */
171 static int translate_speed __P((int));
172 static int baud_rate_of __P((int));
173 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
174 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
175 static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
176 static int dlpi_attach __P((int, int));
177 static int dlpi_info_req __P((int));
178 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
179 static int strioctl __P((int, int, void *, int, int));
183 * sifppa - Sets interface ppa
185 * without setting the ppa, ip module will return EINVAL upon setting the
186 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects
187 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before
188 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to
189 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving
190 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa
191 * is required because the ppp DLPI provider advertises itself as
192 * a DLPI style 2 type, which requires a point of attachment to be
193 * specified. The only way the user can specify a point of attachment
194 * is via SIOCSLIFNAME or IF_UNITSEL.
196 * Such changes in the behavior of ip module was made to meet new or
197 * evolving standards requirements.
205 return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa);
209 #if defined(SOL2) && defined(INET6)
211 * slifname - Sets interface ppa and flags
213 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must
214 * be set in order to declare this as an IPv6 interface
224 memset(&lifr, 0, sizeof(lifr));
225 ret = ioctl(fd, SIOCGLIFFLAGS, &lifr);
229 lifr.lifr_flags |= IFF_IPV6;
230 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4);
232 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
234 ret = ioctl(fd, SIOCSLIFNAME, &lifr);
243 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
245 * walks the list of valid ethernet interfaces, and convert the first
246 * found 48-bit MAC address into EUI 64. caller also assumes that
247 * the system has a properly configured Ethernet interface for this
248 * function to return non-zero.
251 ether_to_eui64(eui64_t *p_eui64)
255 struct lifreq *plifreq;
257 int fd, num_ifs, i, found;
260 struct sockaddr s_eth_addr;
261 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
263 fd = socket(AF_INET, SOCK_DGRAM, 0);
269 * Find out how many interfaces are running
271 lifn.lifn_family = AF_UNSPEC;
272 lifn.lifn_flags = LIFC_NOXMIT;
273 if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) {
275 error("could not determine number of interfaces: %m");
279 num_ifs = lifn.lifn_count;
280 req_size = num_ifs * sizeof(struct lifreq);
281 req = malloc(req_size);
284 error("out of memory");
289 * Get interface configuration info for all interfaces
291 lifc.lifc_family = AF_UNSPEC;
292 lifc.lifc_flags = LIFC_NOXMIT;
293 lifc.lifc_len = req_size;
295 if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) {
298 error("SIOCGLIFCONF: %m");
303 * And traverse each interface to look specifically for the first
304 * occurence of an Ethernet interface which has been marked up
306 plifreq = lifc.lifc_req;
308 for (i = lifc.lifc_len / sizeof(struct lifreq); i>0; i--, plifreq++) {
310 if (strchr(plifreq->lifr_name, ':') != NULL)
313 memset(&lifr, 0, sizeof(lifr));
314 strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name));
315 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
318 error("SIOCGLIFFLAGS: %m");
321 fl = lifr.lifr_flags;
323 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
324 != (IFF_UP | IFF_BROADCAST))
334 error("no persistent id can be found");
339 * Send DL_INFO_REQ to the driver to solicit its MAC address
341 if (!get_hw_addr_dlpi(plifreq->lifr_name, &s_eth_addr)) {
342 error("could not obtain hardware address for %s", plifreq->lifr_name);
347 * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
349 p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02;
350 p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF);
351 p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF);
352 p_eui64->e8[3] = 0xFF;
353 p_eui64->e8[4] = 0xFE;
354 p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF);
355 p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF);
356 p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF);
360 #endif /* defined(SOL2) && defined(INET6) */
363 * sys_init - System-dependent initialization.
370 #if defined(INET6) && defined(SOL2)
373 #endif /* defined(INET6) && defined(SOL2) */
376 union DL_primitives prim;
379 #endif /* !defined(SOL2) */
381 ipfd = open(mux_dev_name, O_RDWR, 0);
383 fatal("Couldn't open IP device: %m");
385 #if defined(INET6) && defined(SOL2)
386 ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0);
388 fatal("Couldn't open IP device (2): %m");
389 #endif /* defined(INET6) && defined(SOL2) */
391 if (default_device && !notty)
392 tty_sid = getsid((pid_t)0);
394 pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0);
396 fatal("Can't open %s: %m", PPP_DEV_NAME);
397 if (kdebugflag & 1) {
398 x = PPPDBG_LOG + PPPDBG_DRIVER;
399 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
402 /* Assign a new PPA and get its unit number. */
403 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
404 fatal("Can't create new PPP interface: %m");
408 * Since sys_init() is called prior to ifname being set in main(),
409 * we need to get the ifname now, otherwise slifname(), and others,
410 * will fail, or maybe, I should move them to a later point ?
411 * <adi.masputra@sun.com>
413 sprintf(ifname, "ppp%d", ifunit);
414 #endif /* defined(SOL2) */
416 * Open the ppp device again and link it under the ip multiplexor.
417 * IP will assign a unit number which hopefully is the same as ifunit.
418 * I don't know any way to be certain they will be the same. :-(
420 ifd = open(PPP_DEV_NAME, O_RDWR, 0);
422 fatal("Can't open %s (2): %m", PPP_DEV_NAME);
423 if (kdebugflag & 1) {
424 x = PPPDBG_LOG + PPPDBG_DRIVER;
425 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
428 #if defined(INET6) && defined(SOL2)
429 i6fd = open(PPP_DEV_NAME, O_RDWR, 0);
432 fatal("Can't open %s (3): %m", PPP_DEV_NAME);
434 if (kdebugflag & 1) {
435 x = PPPDBG_LOG + PPPDBG_DRIVER;
436 strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0);
438 #endif /* defined(INET6) && defined(SOL2) */
441 if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) {
445 #endif /* defined(INET6) */
446 fatal("Can't push IP module: %m");
450 * Assign ppa according to the unit number returned by ppp device
451 * after plumbing is completed above.
453 if (sifppa(ifd, ifunit) < 0) {
457 #endif /* defined(INET6) */
458 fatal("Can't set ppa for unit %d: %m", ifunit);
463 * An IPv6 interface is created anyway, even when the user does not
464 * explicitly enable it. Note that the interface will be marked
465 * IPv6 during slifname().
467 if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) {
470 fatal("Can't push IP module (2): %m");
474 * Assign ppa according to the unit number returned by ppp device
475 * after plumbing is completed above. In addition, mark the interface
476 * as an IPv6 interface.
478 if (slifname(i6fd, ifunit) < 0) {
481 fatal("Can't set ifname for unit %d: %m", ifunit);
483 #endif /* defined(INET6) */
485 ipmuxid = ioctl(ipfd, I_PLINK, ifd);
490 #endif /* defined(INET6) */
491 fatal("Can't I_PLINK PPP device to IP: %m");
494 memset(&ifr, 0, sizeof(ifr));
495 sprintf(ifr.ifr_name, "%s", ifname);
496 ifr.ifr_ip_muxid = ipmuxid;
499 * In Sol 8 and later, STREAMS dynamic module plumbing feature exists.
500 * This is so that an arbitrary module can be inserted, or deleted,
501 * between ip module and the device driver without tearing down the
502 * existing stream. Such feature requires the mux ids, which is set
503 * by SIOCSIFMUXID (or SIOCLSIFMUXID).
505 if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) {
506 ioctl(ipfd, I_PUNLINK, ipmuxid);
509 #endif /* defined(INET6) */
510 fatal("SIOCSIFMUXID: %m");
513 #else /* else if !defined(SOL2) */
515 if (dlpi_attach(ifd, ifunit) < 0 ||
516 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
518 fatal("Can't attach to ppp%d: %m", ifunit);
521 ipmuxid = ioctl(ipfd, I_LINK, ifd);
524 fatal("Can't link PPP device to IP: %m");
525 #endif /* defined(SOL2) */
527 #if defined(INET6) && defined(SOL2)
528 ip6muxid = ioctl(ip6fd, I_PLINK, i6fd);
531 ioctl(ipfd, I_PUNLINK, ipmuxid);
532 fatal("Can't I_PLINK PPP device to IP (2): %m");
535 memset(&lifr, 0, sizeof(lifr));
536 sprintf(lifr.lifr_name, "%s", ifname);
537 lifr.lifr_ip_muxid = ip6muxid;
540 * Let IP know of the mux id [see comment for SIOCSIFMUXID above]
542 if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) {
543 ioctl(ipfd, I_PUNLINK, ipmuxid);
544 ioctl(ip6fd, I_PUNLINK, ip6muxid);
545 fatal("Can't link PPP device to IP (2): %m");
547 #endif /* defined(INET6) && defined(SOL2) */
550 /* Set the interface name for the link. */
551 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
552 ifr.ifr_metric = ipmuxid;
553 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
554 fatal("Can't set interface name %s: %m", ifr.ifr_name);
555 #endif /* !defined(SOL2) */
561 * sys_cleanup - restore any system state we modified before exiting:
562 * mark the interface down, delete default route and/or proxy arp entry.
563 * This should call die() because it's called from die().
572 #endif /* defined(INET6) */
573 #endif /* defined(SOL2) */
575 #if defined(SOL2) && defined(INET6)
578 #endif /* defined(SOL2) && defined(INET6) */
581 if (default_route_gateway)
582 cifdefaultroute(0, default_route_gateway, default_route_gateway);
584 cifproxyarp(0, proxy_arp_addr);
587 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
588 * unlink and re-link the modules, causing the muxid to change.
590 memset(&ifr, 0, sizeof(ifr));
591 sprintf(ifr.ifr_name, "%s", ifname);
592 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
593 error("SIOCGIFFLAGS: %m");
597 if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) {
598 error("SIOCGIFMUXID: %m");
602 ipmuxid = ifr.ifr_ip_muxid;
604 if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) {
605 error("Can't I_PUNLINK PPP from IP: %m");
610 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
611 * unlink and re-link the modules, causing the muxid to change.
613 memset(&lifr, 0, sizeof(lifr));
614 sprintf(lifr.lifr_name, "%s", ifname);
615 if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) {
616 error("SIOCGLIFFLAGS: %m");
620 if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) {
621 error("SIOCGLIFMUXID: %m");
625 ip6muxid = lifr.lifr_ip_muxid;
627 if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) {
628 error("Can't I_PUNLINK PPP from IP (2): %m");
630 #endif /* defined(INET6) */
631 #endif /* defined(SOL2) */
635 * sys_close - Clean up in a child process before execing.
641 #if defined(INET6) && defined(SOL2)
643 #endif /* defined(INET6) && defined(SOL2) */
649 * sys_check_options - check the options that the user specified
659 * daemon - Detach us from controlling terminal session.
662 daemon(nochdir, noclose)
663 int nochdir, noclose;
667 if ((pid = fork()) < 0)
670 exit(0); /* parent dies */
675 fclose(stdin); /* don't need stdin, stdout, stderr */
684 * ppp_available - check whether the system has any ppp interfaces
691 return stat(PPP_DEV_NAME, &buf) >= 0;
695 * any_compressions - see if compression is enabled or not
697 * In the STREAMS implementation of kernel-portion pppd,
698 * the comp STREAMS module performs the ACFC, PFC, as well
699 * CCP and VJ compressions. However, if the user has explicitly
700 * declare to not enable them from the command line, there is
701 * no point of having the comp module be pushed on the stream.
706 if ((!lcp_wantoptions[0].neg_accompression) &&
707 (!lcp_wantoptions[0].neg_pcompression) &&
708 (!ccp_protent.enabled_flag) &&
709 (!ipcp_wantoptions[0].neg_vj)) {
716 * establish_ppp - Turn the serial port into a ppp interface.
724 /* Pop any existing modules off the tty stream. */
726 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
727 || strcmp(tty_modules[i], "ptem") == 0
728 || ioctl(fd, I_POP, 0) < 0)
732 /* Push the async hdlc module and the compressor module. */
736 if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) {
737 error("Couldn't push PPP Async HDLC module: %m");
742 if (kdebugflag & 4) {
743 i = PPPDBG_LOG + PPPDBG_AHDLC;
744 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
747 * There's no need to push comp module if we don't intend
748 * to compress anything
750 if (any_compressions()) {
751 if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0)
752 error("Couldn't push PPP compression module: %m");
757 if (kdebugflag & 2) {
759 if (any_compressions())
761 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
764 /* Link the serial port under the PPP multiplexor. */
765 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
766 error("Can't link tty to PPP mux: %m");
774 * restore_loop - reattach the ppp unit to the loopback.
775 * This doesn't need to do anything because disestablish_ppp does it.
783 * disestablish_ppp - Restore the serial port to normal operation.
784 * It attempts to reconstruct the stream with the previously popped
785 * modules. This shouldn't call die() because it's called from die().
794 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
796 error("Can't unlink tty from PPP mux: %m");
801 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
803 for (i = tty_nmodules - 1; i >= 0; --i)
804 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
805 error("Couldn't restore tty module %s: %m",
808 if (hungup && default_device && tty_sid > 0) {
810 * If we have received a hangup, we need to send a SIGHUP
811 * to the terminal's controlling process. The reason is
812 * that the original stream head for the terminal hasn't
813 * seen the M_HANGUP message (it went up through the ppp
814 * driver to the stream head for our fd to /dev/ppp).
816 kill(tty_sid, SIGHUP);
822 * Check whether the link seems not to be 8-bit clean.
830 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
835 s = "bit 7 set to 1";
838 s = "bit 7 set to 0";
848 warn("Serial link is not 8-bit clean:");
849 warn("All received characters had %s", s);
854 * List of valid speeds.
857 int speed_int, speed_val;
944 * Translate from bits/second to a speed_t.
950 struct speed *speedp;
954 for (speedp = speeds; speedp->speed_int; speedp++)
955 if (bps == speedp->speed_int)
956 return speedp->speed_val;
957 warn("speed %d not supported", bps);
962 * Translate from a speed_t to bits/second.
968 struct speed *speedp;
972 for (speedp = speeds; speedp->speed_int; speedp++)
973 if (speed == speedp->speed_val)
974 return speedp->speed_int;
979 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
980 * at the requested speed, etc. If `local' is true, set CLOCAL
981 * regardless of whether the modem option was specified.
984 set_up_tty(fd, local)
989 #if !defined (CRTSCTS)
993 if (!sync_serial && tcgetattr(fd, &tios) < 0)
994 fatal("tcgetattr: %m");
998 if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) {
1000 if (errno != ENOTTY)
1001 error("TCGETX: %m");
1005 if (!restore_term) {
1011 ioctl(fd, TIOCGWINSZ, &wsinfo);
1014 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
1017 tios.c_cflag |= CRTSCTS;
1018 else if (crtscts < 0)
1019 tios.c_cflag &= ~CRTSCTS;
1021 if (crtscts != 0 && !termiox_ok) {
1022 error("Can't set RTS/CTS flow control");
1023 } else if (crtscts > 0) {
1024 tiox.x_hflag |= RTSXOFF|CTSXON;
1025 } else if (crtscts < 0) {
1026 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
1030 tios.c_cflag |= CS8 | CREAD | HUPCL;
1031 if (local || !modem)
1032 tios.c_cflag |= CLOCAL;
1033 tios.c_iflag = IGNBRK | IGNPAR;
1036 tios.c_cc[VMIN] = 1;
1037 tios.c_cc[VTIME] = 0;
1039 if (crtscts == -2) {
1040 tios.c_iflag |= IXON | IXOFF;
1041 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
1042 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
1045 speed = translate_speed(inspeed);
1047 cfsetospeed(&tios, speed);
1048 cfsetispeed(&tios, speed);
1050 speed = cfgetospeed(&tios);
1052 * We can't proceed if the serial port speed is 0,
1053 * since that implies that the serial port is disabled.
1055 if ((speed == B0) && !sync_serial)
1056 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1059 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1060 fatal("tcsetattr: %m");
1063 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1064 error("TCSETXF: %m");
1068 baud_rate = inspeed = baud_rate_of(speed);
1074 * restore_tty - restore the terminal to the saved settings.
1081 if (!default_device) {
1083 * Turn off echoing, because otherwise we can get into
1084 * a loop with the tty and the modem echoing to each other.
1085 * We presume we are the sole user of this tty device, so
1086 * when we close it, it will revert to its defaults anyway.
1088 inittermios.c_lflag &= ~(ECHO | ECHONL);
1090 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1091 if (!hungup && errno != ENXIO)
1092 warn("tcsetattr: %m");
1094 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1095 if (!hungup && errno != ENXIO)
1096 error("TCSETXF: %m");
1100 ioctl(fd, TIOCSWINSZ, &wsinfo);
1106 * setdtr - control the DTR line on the serial port.
1107 * This is called from die(), so it shouldn't call die().
1113 int modembits = TIOCM_DTR;
1115 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1119 * open_loopback - open the device we use for getting packets
1120 * in demand mode. Under Solaris 2, we use our existing fd
1121 * to the ppp driver.
1130 * output - Output PPP packet.
1133 output(unit, p, len)
1143 dbglog("sent %P", p, len);
1146 data.buf = (caddr_t) p;
1148 while (putmsg(pppfd, NULL, &data, 0) < 0) {
1149 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1151 error("Couldn't send packet: %m");
1155 pfd.events = POLLOUT;
1156 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
1162 * wait_input - wait until there is data available,
1163 * for the length of time specified by *timo (indefinite
1168 struct timeval *timo;
1172 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1173 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1178 * add_fd - add an fd to the set that wait_input waits for.
1185 for (n = 0; n < n_pollfds; ++n)
1186 if (pollfds[n].fd == fd)
1188 if (n_pollfds < MAX_POLLFDS) {
1189 pollfds[n_pollfds].fd = fd;
1190 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1193 error("Too many inputs!");
1197 * remove_fd - remove an fd from the set that wait_input waits for.
1204 for (n = 0; n < n_pollfds; ++n) {
1205 if (pollfds[n].fd == fd) {
1206 while (++n < n_pollfds)
1207 pollfds[n-1] = pollfds[n];
1216 * wait_loop_output - wait until there is data available on the
1217 * loopback, for the length of time specified by *timo (indefinite
1221 wait_loop_output(timo)
1222 struct timeval *timo;
1228 * wait_time - wait for a given length of time or until a
1229 * signal is received.
1233 struct timeval *timo;
1237 n = select(0, NULL, NULL, NULL, timo);
1238 if (n < 0 && errno != EINTR)
1239 fatal("select: %m");
1245 * read_packet - get a PPP packet from the serial device.
1251 struct strbuf ctrl, data;
1253 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1256 data.maxlen = PPP_MRU + PPP_HDRLEN;
1257 data.buf = (caddr_t) buf;
1258 ctrl.maxlen = sizeof(ctrlbuf);
1259 ctrl.buf = (caddr_t) ctrlbuf;
1261 len = getmsg(pppfd, &ctrl, &data, &flags);
1263 if (errno == EAGAIN || errno == EINTR)
1265 fatal("Error reading packet: %m");
1272 * Got a M_PROTO or M_PCPROTO message. Interpret it
1273 * as a DLPI primitive??
1276 dbglog("got dlpi prim 0x%x, len=%d",
1277 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1283 * get_loop_output - get outgoing packets from the ppp device,
1284 * and detect when we want to bring the real link up.
1285 * Return value is 1 if we need to bring up the link, 0 otherwise.
1293 while ((len = read_packet(inpacket_buf)) > 0) {
1294 if (loop_frame(inpacket_buf, len))
1301 * ppp_send_config - configure the transmit characteristics of
1302 * the ppp interface.
1305 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
1312 #if defined(INET6) && defined(SOL2)
1315 #endif /* defined(INET6) && defined(SOL2) */
1318 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1319 if (hungup && errno == ENXIO)
1321 error("Couldn't set MTU: %m");
1325 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1326 error("Couldn't set transmit ACCM: %m");
1329 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1330 cf[1] = COMP_PROT | COMP_AC;
1331 if (any_compressions() &&
1332 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1333 error("Couldn't set prot/AC compression: %m");
1337 /* set the MTU for IP as well */
1338 memset(&ifr, 0, sizeof(ifr));
1339 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1340 ifr.ifr_metric = link_mtu;
1341 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1342 error("Couldn't set IP MTU: %m");
1345 #if defined(INET6) && defined(SOL2)
1346 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1348 error("Couldn't open IPv6 socket: %m");
1350 memset(&lifr, 0, sizeof(lifr));
1351 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1352 lifr.lifr_mtu = link_mtu;
1353 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1355 error("Couldn't set IPv6 MTU: %m");
1358 #endif /* defined(INET6) && defined(SOL2) */
1362 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
1365 ppp_set_xaccm(unit, accm)
1373 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1374 if (!hungup || errno != ENXIO)
1375 warn("Couldn't set extended ACCM: %m");
1380 * ppp_recv_config - configure the receive-side characteristics of
1381 * the ppp interface.
1384 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
1392 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1393 if (hungup && errno == ENXIO)
1395 error("Couldn't set MRU: %m");
1399 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1400 error("Couldn't set receive ACCM: %m");
1403 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1404 cf[1] = DECOMP_PROT | DECOMP_AC;
1405 if (any_compressions() &&
1406 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1407 error("Couldn't set prot/AC decompression: %m");
1413 * ccp_test - ask kernel whether a given compression method
1414 * is acceptable for use.
1417 ccp_test(unit, opt_ptr, opt_len, for_transmit)
1418 int unit, opt_len, for_transmit;
1421 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1422 opt_ptr, opt_len, 0) >= 0)
1424 return (errno == ENOSR)? 0: -1;
1428 * ccp_flags_set - inform kernel about the current state of CCP.
1431 ccp_flags_set(unit, isopen, isup)
1432 int unit, isopen, isup;
1436 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1437 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1438 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1439 if (!hungup || errno != ENXIO)
1440 error("Couldn't set kernel CCP state: %m");
1445 * get_idle_time - return how long the link has been idle.
1448 get_idle_time(u, ip)
1450 struct ppp_idle *ip;
1452 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1456 * get_ppp_stats - return statistics for the link.
1459 get_ppp_stats(u, stats)
1461 struct pppd_stats *stats;
1466 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1467 error("Couldn't get link statistics: %m");
1470 stats->bytes_in = s.p.ppp_ibytes;
1471 stats->bytes_out = s.p.ppp_obytes;
1477 * set_filters - transfer the pass and active filters to the kernel.
1480 set_filters(pass, active)
1481 struct bpf_program *pass, *active;
1485 if (pass->bf_len > 0) {
1486 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1487 sizeof(struct bpf_program), 0) < 0) {
1488 error("Couldn't set pass-filter in kernel: %m");
1492 if (active->bf_len > 0) {
1493 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1494 sizeof(struct bpf_program), 0) < 0) {
1495 error("Couldn't set active-filter in kernel: %m");
1504 * ccp_fatal_error - returns 1 if decompression was disabled as a
1505 * result of an error detected after decompression of a packet,
1506 * 0 otherwise. This is necessary because of patent nonsense.
1509 ccp_fatal_error(unit)
1515 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1516 if (errno != ENXIO && errno != EINVAL)
1517 error("Couldn't get compression flags: %m");
1520 return cf[0] & CCP_FATALERROR;
1524 * sifvjcomp - config tcp header compression
1527 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1528 int u, vjcomp, xcidcomp, xmaxcid;
1534 maxcid[0] = xcidcomp;
1535 maxcid[1] = 15; /* XXX should be rmaxcid */
1536 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1537 error("Couldn't initialize VJ compression: %m");
1541 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1542 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1543 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1544 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1546 error("Couldn't enable VJ compression: %m");
1553 * sifup - Config the interface up and enable IP packets to pass.
1561 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1562 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1563 error("Couldn't mark interface up (get): %m");
1566 ifr.ifr_flags |= IFF_UP;
1567 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1568 error("Couldn't mark interface up (set): %m");
1576 * sifdown - Config the interface down and disable IP.
1586 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1587 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1588 error("Couldn't mark interface down (get): %m");
1591 ifr.ifr_flags &= ~IFF_UP;
1592 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1593 error("Couldn't mark interface down (set): %m");
1601 * sifnpmode - Set the mode for handling packets for a given NP.
1604 sifnpmode(u, proto, mode)
1612 npi[1] = (int) mode;
1613 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1614 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1620 #if defined(SOL2) && defined(INET6)
1622 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1631 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1636 memset(&lifr, 0, sizeof(lifr));
1637 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1638 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1643 lifr.lifr_flags |= IFF_UP;
1644 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1645 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1656 * sifdown - Config the IPv6 interface down and disable IPv6.
1665 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1669 memset(&lifr, 0, sizeof(lifr));
1670 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1671 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1676 lifr.lifr_flags &= ~IFF_UP;
1677 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1678 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1689 * sif6addr - Config the interface with an IPv6 link-local address
1697 struct sockaddr_storage laddr;
1698 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1701 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1705 memset(&lifr, 0, sizeof(lifr));
1706 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1709 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1710 * zero values, hence the interface token came to be zero too,
1711 * and without this, in.ndpd will complain
1713 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1714 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1720 * Set the interface address and destination address
1722 IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1723 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1728 memset(&lifr, 0, sizeof(lifr));
1729 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1730 IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1731 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1740 * cif6addr - Remove the IPv6 address from interface
1750 #endif /* defined(SOL2) && defined(INET6) */
1753 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1756 * sifaddr - Config the interface IP addresses and netmask.
1766 memset(&ifr, 0, sizeof(ifr));
1767 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1768 ifr.ifr_addr.sa_family = AF_INET;
1769 INET_ADDR(ifr.ifr_addr) = m;
1770 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1771 error("Couldn't set IP netmask: %m");
1774 ifr.ifr_addr.sa_family = AF_INET;
1775 INET_ADDR(ifr.ifr_addr) = o;
1776 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1777 error("Couldn't set local IP address: %m");
1782 * On some systems, we have to explicitly set the point-to-point
1783 * flag bit before we can set a destination address.
1785 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1786 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1787 ifr.ifr_flags |= IFF_POINTOPOINT;
1788 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1789 error("Couldn't mark interface pt-to-pt: %m");
1793 ifr.ifr_dstaddr.sa_family = AF_INET;
1794 INET_ADDR(ifr.ifr_dstaddr) = h;
1795 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1796 error("Couldn't set remote IP address: %m");
1799 #if 0 /* now done in ppp_send_config */
1800 ifr.ifr_metric = link_mtu;
1801 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1802 error("Couldn't set IP MTU: %m");
1811 * cifaddr - Clear the interface IP addresses, and delete routes
1812 * through the interface if possible.
1819 #if defined(__USLC__) /* was: #if 0 */
1820 cifroute(unit, ouraddr, hisaddr);
1822 notice("Removing ppp interface unit");
1823 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1824 error("Can't remove ppp interface unit: %m");
1835 * sifdefaultroute - assign a default route through the address given.
1838 sifdefaultroute(u, l, g)
1844 #if defined(__USLC__)
1845 g = l; /* use the local address as gateway */
1847 memset(&rt, 0, sizeof(rt));
1848 rt.rt_dst.sa_family = AF_INET;
1849 INET_ADDR(rt.rt_dst) = 0;
1850 rt.rt_gateway.sa_family = AF_INET;
1851 INET_ADDR(rt.rt_gateway) = g;
1852 rt.rt_flags = RTF_GATEWAY;
1854 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
1855 error("Can't add default route: %m");
1859 default_route_gateway = g;
1864 * cifdefaultroute - delete a default route through the address given.
1867 cifdefaultroute(u, l, g)
1873 #if defined(__USLC__)
1874 g = l; /* use the local address as gateway */
1876 memset(&rt, 0, sizeof(rt));
1877 rt.rt_dst.sa_family = AF_INET;
1878 INET_ADDR(rt.rt_dst) = 0;
1879 rt.rt_gateway.sa_family = AF_INET;
1880 INET_ADDR(rt.rt_gateway) = g;
1881 rt.rt_flags = RTF_GATEWAY;
1883 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
1884 error("Can't delete default route: %m");
1888 default_route_gateway = 0;
1893 * sifproxyarp - Make a proxy ARP entry for the peer.
1896 sifproxyarp(unit, hisaddr)
1900 struct arpreq arpreq;
1902 memset(&arpreq, 0, sizeof(arpreq));
1903 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
1906 arpreq.arp_pa.sa_family = AF_INET;
1907 INET_ADDR(arpreq.arp_pa) = hisaddr;
1908 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
1909 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
1910 error("Couldn't set proxy ARP entry: %m");
1914 proxy_arp_addr = hisaddr;
1919 * cifproxyarp - Delete the proxy ARP entry for the peer.
1922 cifproxyarp(unit, hisaddr)
1926 struct arpreq arpreq;
1928 memset(&arpreq, 0, sizeof(arpreq));
1929 arpreq.arp_pa.sa_family = AF_INET;
1930 INET_ADDR(arpreq.arp_pa) = hisaddr;
1931 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
1932 error("Couldn't delete proxy ARP entry: %m");
1941 * get_ether_addr - get the hardware address of an interface on the
1942 * the same subnet as ipaddr.
1947 get_ether_addr(ipaddr, hwaddr)
1949 struct sockaddr *hwaddr;
1951 struct ifreq *ifr, *ifend, ifreq;
1954 u_int32_t ina, mask;
1957 * Scan through the system's network interfaces.
1960 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
1963 ifc.ifc_len = nif * sizeof(struct ifreq);
1964 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
1965 if (ifc.ifc_buf == 0)
1967 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
1968 warn("Couldn't get system interface list: %m");
1972 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
1973 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
1974 if (ifr->ifr_addr.sa_family != AF_INET)
1977 * Check that the interface is up, and not point-to-point or loopback.
1979 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
1980 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
1982 if ((ifreq.ifr_flags &
1983 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
1984 != (IFF_UP|IFF_BROADCAST))
1987 * Get its netmask and check that it's on the right subnet.
1989 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
1991 ina = INET_ADDR(ifr->ifr_addr);
1992 mask = INET_ADDR(ifreq.ifr_addr);
1993 if ((ipaddr & mask) == (ina & mask))
1998 warn("No suitable interface found for proxy ARP");
2003 info("found interface %s for proxy ARP", ifr->ifr_name);
2004 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2005 error("Couldn't get hardware address for %s", ifr->ifr_name);
2015 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2018 get_hw_addr_dlpi(name, hwaddr)
2020 struct sockaddr *hwaddr;
2023 int unit, iffd, adrlen;
2024 unsigned char *adrp;
2027 union DL_primitives prim;
2032 * We have to open the device and ask it for its hardware address.
2033 * First split apart the device name and unit.
2035 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2036 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2043 * Open the device and do a DLPI attach and phys_addr_req.
2045 iffd = open(ifdev, O_RDWR);
2047 error("Can't open %s: %m", ifdev);
2050 if (dlpi_attach(iffd, unit) < 0
2051 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2052 || dlpi_info_req(iffd) < 0
2053 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2058 adrlen = reply.prim.info_ack.dl_addr_length;
2059 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2061 #if DL_CURRENT_VERSION >= 2
2062 if (reply.prim.info_ack.dl_sap_length < 0)
2063 adrlen += reply.prim.info_ack.dl_sap_length;
2065 adrp += reply.prim.info_ack.dl_sap_length;
2068 hwaddr->sa_family = AF_UNSPEC;
2069 memcpy(hwaddr->sa_data, adrp, adrlen);
2074 * get_hw_addr - obtain the hardware address for a named interface.
2077 get_hw_addr(name, ina, hwaddr)
2080 struct sockaddr *hwaddr;
2082 /* New way - get the address by doing an arp request. */
2086 s = socket(AF_INET, SOCK_DGRAM, 0);
2089 memset(&req, 0, sizeof(req));
2090 req.arp_pa.sa_family = AF_INET;
2091 INET_ADDR(req.arp_pa) = ina;
2092 if (ioctl(s, SIOCGARP, &req) < 0) {
2093 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2096 *hwaddr = req.arp_ha;
2097 hwaddr->sa_family = AF_UNSPEC;
2103 dlpi_attach(fd, ppa)
2106 dl_attach_req_t req;
2109 req.dl_primitive = DL_ATTACH_REQ;
2111 buf.len = sizeof(req);
2112 buf.buf = (void *) &req;
2113 return putmsg(fd, &buf, NULL, RS_HIPRI);
2123 req.dl_primitive = DL_INFO_REQ;
2124 buf.len = sizeof(req);
2125 buf.buf = (void *) &req;
2126 return putmsg(fd, &buf, NULL, RS_HIPRI);
2130 dlpi_get_reply(fd, reply, expected_prim, maxlen)
2131 union DL_primitives *reply;
2132 int fd, expected_prim, maxlen;
2139 * Use poll to wait for a message with a timeout.
2142 pfd.events = POLLIN | POLLPRI;
2144 n = poll(&pfd, 1, 1000);
2145 } while (n == -1 && errno == EINTR);
2152 buf.maxlen = maxlen;
2153 buf.buf = (void *) reply;
2155 if (getmsg(fd, &buf, NULL, &flags) < 0)
2158 if (buf.len < sizeof(ulong)) {
2160 dbglog("dlpi response short (len=%d)\n", buf.len);
2164 if (reply->dl_primitive == expected_prim)
2168 if (reply->dl_primitive == DL_ERROR_ACK) {
2169 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2170 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2171 reply->error_ack.dl_error_primitive);
2173 dbglog("dlpi unexpected response prim %x\n",
2174 reply->dl_primitive);
2182 * Return user specified netmask, modified by any mask we might determine
2183 * for address `addr' (in network byte order).
2184 * Here we scan through the system's list of interfaces, looking for
2185 * any non-point-to-point interfaces which might appear to be on the same
2186 * network as `addr'. If we find any, we OR in their netmask to the
2187 * user-specified netmask.
2193 u_int32_t mask, nmask, ina;
2194 struct ifreq *ifr, *ifend, ifreq;
2199 if (IN_CLASSA(addr)) /* determine network mask for address class */
2200 nmask = IN_CLASSA_NET;
2201 else if (IN_CLASSB(addr))
2202 nmask = IN_CLASSB_NET;
2204 nmask = IN_CLASSC_NET;
2205 /* class D nets are disallowed by bad_ip_adrs */
2206 mask = netmask | htonl(nmask);
2209 * Scan through the system's network interfaces.
2212 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2215 ifc.ifc_len = nif * sizeof(struct ifreq);
2216 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2217 if (ifc.ifc_buf == 0)
2219 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2220 warn("Couldn't get system interface list: %m");
2224 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2225 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2227 * Check the interface's internet address.
2229 if (ifr->ifr_addr.sa_family != AF_INET)
2231 ina = INET_ADDR(ifr->ifr_addr);
2232 if ((ntohl(ina) & nmask) != (addr & nmask))
2235 * Check that the interface is up, and not point-to-point or loopback.
2237 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2238 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2240 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2244 * Get its netmask and OR it into our mask.
2246 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2248 mask |= INET_ADDR(ifreq.ifr_addr);
2256 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2259 logwtmp(line, name, host)
2260 const char *line, *name, *host;
2262 static struct utmpx utmpx;
2266 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2267 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
2268 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2269 utmpx.ut_pid = getpid();
2270 utmpx.ut_type = USER_PROCESS;
2272 utmpx.ut_type = DEAD_PROCESS;
2274 gettimeofday(&utmpx.ut_tv, NULL);
2275 updwtmpx("/var/adm/wtmpx", &utmpx);
2279 * get_host_seed - return the serial number of this machine.
2286 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2287 error("sysinfo: %m");
2290 return (int) strtoul(buf, NULL, 16);
2294 strioctl(fd, cmd, ptr, ilen, olen)
2295 int fd, cmd, ilen, olen;
2298 struct strioctl str;
2304 if (ioctl(fd, I_STR, &str) == -1)
2306 if (str.ic_len != olen)
2307 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2308 olen, str.ic_len, cmd);
2314 * lock - create a lock file for the named lock device
2317 #define LOCK_PREFIX "/var/spool/locks/LK."
2318 static char lock_file[40]; /* name of lock file created */
2328 if (stat(dev, &sbuf) < 0) {
2329 error("Can't get device number for %s: %m", dev);
2332 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2333 error("Can't lock %s: not a character device", dev);
2336 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2337 LOCK_PREFIX, major(sbuf.st_dev),
2338 major(sbuf.st_rdev), minor(sbuf.st_rdev));
2340 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2342 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2343 /* Read the lock file to find out who has the device locked */
2344 n = read(fd, ascii_pid, 11);
2346 error("Can't read pid from lock file %s", lock_file);
2350 pid = atoi(ascii_pid);
2351 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2352 /* pid no longer exists - remove the lock file */
2353 if (unlink(lock_file) == 0) {
2355 notice("Removed stale lock on %s (pid %d)",
2359 warn("Couldn't remove stale lock on %s",
2362 notice("Device %s is locked by pid %d",
2367 error("Can't create lock file %s: %m", lock_file);
2372 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2373 write(fd, ascii_pid, 11);
2380 * unlock - remove our lockfile
2393 * cifroute - delete a route through the addresses given.
2396 cifroute(u, our, his)
2402 memset(&rt, 0, sizeof(rt));
2403 rt.rt_dst.sa_family = AF_INET;
2404 INET_ADDR(rt.rt_dst) = his;
2405 rt.rt_gateway.sa_family = AF_INET;
2406 INET_ADDR(rt.rt_gateway) = our;
2407 rt.rt_flags = RTF_HOST;
2409 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2410 error("Can't delete route: %m");
2418 * have_route_to - determine if the system has a route to the specified
2419 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
2420 * `addr' is in network byte order.
2421 * For demand mode to work properly, we have to ignore routes
2422 * through our own interface.
2424 #ifndef T_CURRENT /* needed for Solaris 2.5 */
2425 #define T_CURRENT MI_T_CURRENT
2433 int fd, r, flags, i;
2435 struct T_optmgmt_req req;
2439 struct T_optmgmt_ack ack;
2440 unsigned char space[64];
2443 struct strbuf cbuf, dbuf;
2445 mib2_ipRouteEntry_t routes[8];
2446 mib2_ipRouteEntry_t *rp;
2448 fd = open(mux_dev_name, O_RDWR);
2450 warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2454 req.req.PRIM_type = T_OPTMGMT_REQ;
2455 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2456 req.req.OPT_length = sizeof(req.hdr);
2457 req.req.MGMT_flags = T_CURRENT;
2459 req.hdr.level = MIB2_IP;
2463 cbuf.buf = (char *) &req;
2464 cbuf.len = sizeof(req);
2466 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2467 warn("have_route_to: putmsg: %m");
2473 cbuf.buf = (char *) &ack;
2474 cbuf.maxlen = sizeof(ack);
2475 dbuf.buf = (char *) routes;
2476 dbuf.maxlen = sizeof(routes);
2478 r = getmsg(fd, &cbuf, &dbuf, &flags);
2480 warn("have_route_to: getmsg: %m");
2485 if (cbuf.len < sizeof(struct T_optmgmt_ack)
2486 || ack.ack.PRIM_type != T_OPTMGMT_ACK
2487 || ack.ack.MGMT_flags != T_SUCCESS
2488 || ack.ack.OPT_length < sizeof(struct opthdr)) {
2489 dbglog("have_route_to: bad message len=%d prim=%d",
2490 cbuf.len, ack.ack.PRIM_type);
2495 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2496 if (rh->level == 0 && rh->name == 0)
2498 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2499 while (r == MOREDATA)
2500 r = getmsg(fd, NULL, &dbuf, &flags);
2505 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2506 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2507 if (rp->ipRouteMask != ~0) {
2508 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2509 rp->ipRouteDest, rp->ipRouteNextHop,
2511 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2512 && rp->ipRouteNextHop != remote_addr)
2518 r = getmsg(fd, NULL, &dbuf, &flags);
2529 * get_pty - get a pty master/slave pair and chown the slave side to
2530 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
2533 get_pty(master_fdp, slave_fdp, slave_name, uid)
2541 struct termios tios;
2543 mfd = open("/dev/ptmx", O_RDWR);
2545 error("Couldn't open pty master: %m");
2549 pty_name = ptsname(mfd);
2550 if (pty_name == NULL) {
2551 error("Couldn't get name of pty slave");
2555 if (chown(pty_name, uid, -1) < 0)
2556 warn("Couldn't change owner of pty slave: %m");
2557 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2558 warn("Couldn't change permissions on pty slave: %m");
2559 if (unlockpt(mfd) < 0)
2560 warn("Couldn't unlock pty slave: %m");
2562 sfd = open(pty_name, O_RDWR);
2564 error("Couldn't open pty slave %s: %m", pty_name);
2568 if (ioctl(sfd, I_PUSH, "ptem") < 0)
2569 warn("Couldn't push ptem module on pty slave: %m");
2571 dbglog("Using %s", pty_name);
2572 strlcpy(slave_name, pty_name, MAXPATHLEN);