2 * System-dependent procedures for pppd under Solaris 2.
4 * Parts re-written by Adi Masputra <adi.masputra@sun.com>, based on
5 * the original sys-svr4.c
7 * Copyright (c) 2000 by Sun Microsystems, Inc.
10 * Permission to use, copy, modify, and distribute this software and its
11 * documentation is hereby granted, provided that the above copyright
12 * notice appears in all copies.
14 * SUN MAKES NO REPRESENTATION OR WARRANTIES ABOUT THE SUITABILITY OF
15 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
16 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
17 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
18 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
19 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES
21 * Copyright (c) 1995-2002 Paul Mackerras. All rights reserved.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in
32 * the documentation and/or other materials provided with the
35 * 3. The name(s) of the authors of this software must not be used to
36 * endorse or promote products derived from this software without
37 * prior written permission.
39 * 4. Redistributions of any form whatsoever must retain the following
41 * "This product includes software developed by Paul Mackerras
42 * <paulus@samba.org>".
44 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
45 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
46 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
47 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
48 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
49 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
50 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
52 * Derived from main.c and pppd.h, which are:
54 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
56 * Redistribution and use in source and binary forms, with or without
57 * modification, are permitted provided that the following conditions
60 * 1. Redistributions of source code must retain the above copyright
61 * notice, this list of conditions and the following disclaimer.
63 * 2. Redistributions in binary form must reproduce the above copyright
64 * notice, this list of conditions and the following disclaimer in
65 * the documentation and/or other materials provided with the
68 * 3. The name "Carnegie Mellon University" must not be used to
69 * endorse or promote products derived from this software without
70 * prior written permission. For permission or any legal
71 * details, please contact
72 * Office of Technology Transfer
73 * Carnegie Mellon University
75 * Pittsburgh, PA 15213-3890
76 * (412) 268-4387, fax: (412) 268-7395
77 * tech-transfer@andrew.cmu.edu
79 * 4. Redistributions of any form whatsoever must retain the following
81 * "This product includes software developed by Computing Services
82 * at Carnegie Mellon University (http://www.cmu.edu/computing/)."
84 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
85 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
86 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
87 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
88 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
89 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
90 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
93 #define RCSID "$Id: sys-svr4.c,v 1.45 2002/12/04 23:03:33 paulus Exp $"
105 #include <sys/termiox.h>
109 #include <sys/types.h>
110 #include <sys/ioccom.h>
111 #include <sys/stream.h>
112 #include <sys/stropts.h>
113 #include <sys/socket.h>
114 #include <sys/sockio.h>
115 #include <sys/sysmacros.h>
116 #include <sys/systeminfo.h>
117 #include <sys/dlpi.h>
118 #include <sys/stat.h>
119 #include <sys/mkdev.h>
121 #include <net/if_arp.h>
122 #include <net/route.h>
123 #include <net/ppp_defs.h>
124 #include <net/pppio.h>
125 #include <netinet/in.h>
127 #include <sys/tihdr.h>
128 #include <sys/tiuser.h>
129 #include <inet/common.h>
130 #include <inet/mib2.h>
131 #include <sys/ethernet.h>
140 #if !defined(PPP_DEV_NAME)
141 #define PPP_DEV_NAME "/dev/ppp"
142 #endif /* !defined(PPP_DEV_NAME) */
144 #if !defined(AHDLC_MOD_NAME)
145 #define AHDLC_MOD_NAME "ppp_ahdl"
146 #endif /* !defined(AHDLC_MOD_NAME) */
148 #if !defined(COMP_MOD_NAME)
149 #define COMP_MOD_NAME "ppp_comp"
150 #endif /* !defined(COMP_MOD_NAME) */
152 #if !defined(IP_DEV_NAME)
153 #define IP_DEV_NAME "/dev/ip"
154 #endif /* !defined(IP_DEV_NAME) */
156 #if !defined(IP_MOD_NAME)
157 #define IP_MOD_NAME "ip"
158 #endif /* !defined(IP_MOD_NAME) */
160 #if !defined(UDP_DEV_NAME) && defined(SOL2)
161 #define UDP_DEV_NAME "/dev/udp"
162 #endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */
164 #if !defined(UDP6_DEV_NAME) && defined(SOL2)
165 #define UDP6_DEV_NAME "/dev/udp6"
166 #endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */
168 static const char rcsid[] = RCSID;
172 * "/dev/udp" is used as a multiplexor to PLINK the interface stream
173 * under. It is used in place of "/dev/ip" since STREAMS will not let
174 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the
175 * driver at the bottom of the tunneling interfaces stream.
177 static char *mux_dev_name = UDP_DEV_NAME;
179 static char *mux_dev_name = IP_DEV_NAME;
182 static int fdmuxid = -1;
184 static int ipmuxid = -1;
186 #if defined(INET6) && defined(SOL2)
187 static int ip6fd; /* IP file descriptor */
188 static int ip6muxid = -1; /* Multiplexer file descriptor */
189 static int if6_is_up = 0; /* IPv6 interface has been marked up */
191 #define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \
192 s->sin6_addr.s6_addr32[0] = htonl(as); \
193 eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \
194 s->sin6_family = AF_INET6; \
195 l.lifr_addr.ss_family = AF_INET6; \
196 l.lifr_addrlen = 10; \
197 l.lifr_addr = laddr; \
200 #define IN6_LLADDR_FROM_EUI64(l, s, eui64) \
201 _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000)
203 #define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \
204 _IN6_LLX_FROM_EUI64(l, s, eui64, 0)
206 #endif /* defined(INET6) && defined(SOL2) */
208 #if defined(INET6) && defined(SOL2)
209 static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */
211 static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */
212 #define MAXIFS 256 /* Max # of interfaces */
213 #endif /* defined(INET6) && defined(SOL2) */
215 static int restore_term;
216 static struct termios inittermios;
218 static struct termiox inittermiox;
219 static int termiox_ok;
221 static struct winsize wsinfo; /* Initial window size info */
222 static pid_t tty_sid; /* original session ID for terminal */
224 extern u_char inpacket_buf[]; /* borrowed from main.c */
226 #define MAX_POLLFDS 32
227 static struct pollfd pollfds[MAX_POLLFDS];
228 static int n_pollfds;
230 static int link_mtu, link_mru;
233 static int tty_nmodules;
234 static char tty_modules[NMODULES][FMNAMESZ+1];
235 static int tty_npushed;
237 static int if_is_up; /* Interface has been marked up */
238 static u_int32_t remote_addr; /* IP address of peer */
239 static u_int32_t default_route_gateway; /* Gateway for default route added */
240 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
242 /* Prototypes for procedures local to this file. */
243 static int translate_speed __P((int));
244 static int baud_rate_of __P((int));
245 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
246 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
247 static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
248 static int dlpi_attach __P((int, int));
249 static int dlpi_info_req __P((int));
250 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
251 static int strioctl __P((int, int, void *, int, int));
255 * sifppa - Sets interface ppa
257 * without setting the ppa, ip module will return EINVAL upon setting the
258 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects
259 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before
260 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to
261 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving
262 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa
263 * is required because the ppp DLPI provider advertises itself as
264 * a DLPI style 2 type, which requires a point of attachment to be
265 * specified. The only way the user can specify a point of attachment
266 * is via SIOCSLIFNAME or IF_UNITSEL.
268 * Such changes in the behavior of ip module was made to meet new or
269 * evolving standards requirements.
277 return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa);
281 #if defined(SOL2) && defined(INET6)
283 * get_first_ethernet - returns the first Ethernet interface name found in
284 * the system, or NULL if none is found
286 * NOTE: This is the lifreq version (Solaris 8 and above)
293 struct lifreq *plifreq;
295 int fd, num_ifs, i, found;
299 fd = socket(AF_INET, SOCK_DGRAM, 0);
305 * Find out how many interfaces are running
307 lifn.lifn_family = AF_UNSPEC;
308 lifn.lifn_flags = LIFC_NOXMIT;
309 if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) {
311 error("could not determine number of interfaces: %m");
315 num_ifs = lifn.lifn_count;
316 req_size = num_ifs * sizeof(struct lifreq);
317 req = malloc(req_size);
320 error("out of memory");
325 * Get interface configuration info for all interfaces
327 lifc.lifc_family = AF_UNSPEC;
328 lifc.lifc_flags = LIFC_NOXMIT;
329 lifc.lifc_len = req_size;
331 if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) {
334 error("SIOCGLIFCONF: %m");
339 * And traverse each interface to look specifically for the first
340 * occurence of an Ethernet interface which has been marked up
342 plifreq = lifc.lifc_req;
344 for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) {
346 if (strchr(plifreq->lifr_name, ':') != NULL)
349 memset(&lifr, 0, sizeof(lifr));
350 strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name));
351 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
354 error("SIOCGLIFFLAGS: %m");
357 fl = lifr.lifr_flags;
359 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
360 != (IFF_UP | IFF_BROADCAST))
370 strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name));
371 return (char *)first_ether_name;
377 * get_first_ethernet - returns the first Ethernet interface name found in
378 * the system, or NULL if none is found
380 * NOTE: This is the ifreq version (before Solaris 8).
386 struct ifreq *pifreq;
388 int fd, num_ifs, i, found;
392 fd = socket(AF_INET, SOCK_DGRAM, 0);
398 * Find out how many interfaces are running
400 if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) {
404 req_size = num_ifs * sizeof(struct ifreq);
405 req = malloc(req_size);
408 error("out of memory");
413 * Get interface configuration info for all interfaces
415 ifc.ifc_len = req_size;
417 if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) {
420 error("SIOCGIFCONF: %m");
425 * And traverse each interface to look specifically for the first
426 * occurence of an Ethernet interface which has been marked up
428 pifreq = ifc.ifc_req;
430 for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) {
432 if (strchr(pifreq->ifr_name, ':') != NULL)
435 memset(&ifr, 0, sizeof(ifr));
436 strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name));
437 if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
440 error("SIOCGIFFLAGS: %m");
445 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
446 != (IFF_UP | IFF_BROADCAST))
456 strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name));
457 return (char *)first_ether_name;
461 #endif /* defined(SOL2) && defined(INET6) */
465 * get_if_hwaddr - get the hardware address for the specified
466 * network interface device.
469 get_if_hwaddr(u_char *addr, char *if_name)
471 struct sockaddr s_eth_addr;
472 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
478 * Send DL_INFO_REQ to the driver to solicit its MAC address
480 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
481 error("could not obtain hardware address for %s", if_name);
485 memcpy(addr, eth_addr->ether_addr_octet, 6);
490 #if defined(SOL2) && defined(INET6)
492 * slifname - Sets interface ppa and flags
494 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must
495 * be set in order to declare this as an IPv6 interface
505 memset(&lifr, 0, sizeof(lifr));
506 ret = ioctl(fd, SIOCGLIFFLAGS, &lifr);
510 lifr.lifr_flags |= IFF_IPV6;
511 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4);
513 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
515 ret = ioctl(fd, SIOCSLIFNAME, &lifr);
525 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
527 * walks the list of valid ethernet interfaces, and convert the first
528 * found 48-bit MAC address into EUI 64. caller also assumes that
529 * the system has a properly configured Ethernet interface for this
530 * function to return non-zero.
533 ether_to_eui64(eui64_t *p_eui64)
535 struct sockaddr s_eth_addr;
536 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
539 if ((if_name = get_first_ethernet()) == NULL) {
540 error("no persistent id can be found");
545 * Send DL_INFO_REQ to the driver to solicit its MAC address
547 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
548 error("could not obtain hardware address for %s", if_name);
553 * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
555 p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02;
556 p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF);
557 p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF);
558 p_eui64->e8[3] = 0xFF;
559 p_eui64->e8[4] = 0xFE;
560 p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF);
561 p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF);
562 p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF);
566 #endif /* defined(SOL2) && defined(INET6) */
569 * sys_init - System-dependent initialization.
576 #if defined(INET6) && defined(SOL2)
579 #endif /* defined(INET6) && defined(SOL2) */
582 union DL_primitives prim;
585 #endif /* !defined(SOL2) */
587 ipfd = open(mux_dev_name, O_RDWR, 0);
589 fatal("Couldn't open IP device: %m");
591 #if defined(INET6) && defined(SOL2)
592 ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0);
594 fatal("Couldn't open IP device (2): %m");
595 #endif /* defined(INET6) && defined(SOL2) */
597 if (default_device && !notty)
598 tty_sid = getsid((pid_t)0);
600 pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0);
602 fatal("Can't open %s: %m", PPP_DEV_NAME);
603 if (kdebugflag & 1) {
604 x = PPPDBG_LOG + PPPDBG_DRIVER;
605 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
608 /* Assign a new PPA and get its unit number. */
609 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
610 fatal("Can't create new PPP interface: %m");
614 * Since sys_init() is called prior to ifname being set in main(),
615 * we need to get the ifname now, otherwise slifname(), and others,
616 * will fail, or maybe, I should move them to a later point ?
617 * <adi.masputra@sun.com>
619 sprintf(ifname, "ppp%d", ifunit);
620 #endif /* defined(SOL2) */
622 * Open the ppp device again and link it under the ip multiplexor.
623 * IP will assign a unit number which hopefully is the same as ifunit.
624 * I don't know any way to be certain they will be the same. :-(
626 ifd = open(PPP_DEV_NAME, O_RDWR, 0);
628 fatal("Can't open %s (2): %m", PPP_DEV_NAME);
629 if (kdebugflag & 1) {
630 x = PPPDBG_LOG + PPPDBG_DRIVER;
631 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
634 #if defined(INET6) && defined(SOL2)
635 i6fd = open(PPP_DEV_NAME, O_RDWR, 0);
638 fatal("Can't open %s (3): %m", PPP_DEV_NAME);
640 if (kdebugflag & 1) {
641 x = PPPDBG_LOG + PPPDBG_DRIVER;
642 strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0);
644 #endif /* defined(INET6) && defined(SOL2) */
647 if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) {
651 #endif /* defined(INET6) */
652 fatal("Can't push IP module: %m");
656 * Assign ppa according to the unit number returned by ppp device
657 * after plumbing is completed above.
659 if (sifppa(ifd, ifunit) < 0) {
663 #endif /* defined(INET6) */
664 fatal("Can't set ppa for unit %d: %m", ifunit);
669 * An IPv6 interface is created anyway, even when the user does not
670 * explicitly enable it. Note that the interface will be marked
671 * IPv6 during slifname().
673 if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) {
676 fatal("Can't push IP module (2): %m");
680 * Assign ppa according to the unit number returned by ppp device
681 * after plumbing is completed above. In addition, mark the interface
682 * as an IPv6 interface.
684 if (slifname(i6fd, ifunit) < 0) {
687 fatal("Can't set ifname for unit %d: %m", ifunit);
689 #endif /* defined(INET6) */
691 ipmuxid = ioctl(ipfd, I_PLINK, ifd);
696 #endif /* defined(INET6) */
697 fatal("Can't I_PLINK PPP device to IP: %m");
700 memset(&ifr, 0, sizeof(ifr));
701 sprintf(ifr.ifr_name, "%s", ifname);
702 ifr.ifr_ip_muxid = ipmuxid;
705 * In Sol 8 and later, STREAMS dynamic module plumbing feature exists.
706 * This is so that an arbitrary module can be inserted, or deleted,
707 * between ip module and the device driver without tearing down the
708 * existing stream. Such feature requires the mux ids, which is set
709 * by SIOCSIFMUXID (or SIOCLSIFMUXID).
711 if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) {
712 ioctl(ipfd, I_PUNLINK, ipmuxid);
715 #endif /* defined(INET6) */
716 fatal("SIOCSIFMUXID: %m");
719 #else /* else if !defined(SOL2) */
721 if (dlpi_attach(ifd, ifunit) < 0 ||
722 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
724 fatal("Can't attach to ppp%d: %m", ifunit);
727 ipmuxid = ioctl(ipfd, I_LINK, ifd);
730 fatal("Can't link PPP device to IP: %m");
731 #endif /* defined(SOL2) */
733 #if defined(INET6) && defined(SOL2)
734 ip6muxid = ioctl(ip6fd, I_PLINK, i6fd);
737 ioctl(ipfd, I_PUNLINK, ipmuxid);
738 fatal("Can't I_PLINK PPP device to IP (2): %m");
741 memset(&lifr, 0, sizeof(lifr));
742 sprintf(lifr.lifr_name, "%s", ifname);
743 lifr.lifr_ip_muxid = ip6muxid;
746 * Let IP know of the mux id [see comment for SIOCSIFMUXID above]
748 if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) {
749 ioctl(ipfd, I_PUNLINK, ipmuxid);
750 ioctl(ip6fd, I_PUNLINK, ip6muxid);
751 fatal("Can't link PPP device to IP (2): %m");
753 #endif /* defined(INET6) && defined(SOL2) */
756 /* Set the interface name for the link. */
757 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
758 ifr.ifr_metric = ipmuxid;
759 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
760 fatal("Can't set interface name %s: %m", ifr.ifr_name);
761 #endif /* !defined(SOL2) */
767 * sys_cleanup - restore any system state we modified before exiting:
768 * mark the interface down, delete default route and/or proxy arp entry.
769 * This should call die() because it's called from die().
778 #endif /* defined(INET6) */
779 #endif /* defined(SOL2) */
781 #if defined(SOL2) && defined(INET6)
784 #endif /* defined(SOL2) && defined(INET6) */
787 if (default_route_gateway)
788 cifdefaultroute(0, default_route_gateway, default_route_gateway);
790 cifproxyarp(0, proxy_arp_addr);
793 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
794 * unlink and re-link the modules, causing the muxid to change.
796 memset(&ifr, 0, sizeof(ifr));
797 sprintf(ifr.ifr_name, "%s", ifname);
798 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
799 error("SIOCGIFFLAGS: %m");
803 if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) {
804 error("SIOCGIFMUXID: %m");
808 ipmuxid = ifr.ifr_ip_muxid;
810 if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) {
811 error("Can't I_PUNLINK PPP from IP: %m");
816 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
817 * unlink and re-link the modules, causing the muxid to change.
819 memset(&lifr, 0, sizeof(lifr));
820 sprintf(lifr.lifr_name, "%s", ifname);
821 if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) {
822 error("SIOCGLIFFLAGS: %m");
826 if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) {
827 error("SIOCGLIFMUXID: %m");
831 ip6muxid = lifr.lifr_ip_muxid;
833 if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) {
834 error("Can't I_PUNLINK PPP from IP (2): %m");
836 #endif /* defined(INET6) */
837 #endif /* defined(SOL2) */
841 * sys_close - Clean up in a child process before execing.
847 #if defined(INET6) && defined(SOL2)
849 #endif /* defined(INET6) && defined(SOL2) */
855 * sys_check_options - check the options that the user specified
865 * daemon - Detach us from controlling terminal session.
868 daemon(nochdir, noclose)
869 int nochdir, noclose;
873 if ((pid = fork()) < 0)
876 exit(0); /* parent dies */
881 fclose(stdin); /* don't need stdin, stdout, stderr */
890 * ppp_available - check whether the system has any ppp interfaces
897 return stat(PPP_DEV_NAME, &buf) >= 0;
901 * any_compressions - see if compression is enabled or not
903 * In the STREAMS implementation of kernel-portion pppd,
904 * the comp STREAMS module performs the ACFC, PFC, as well
905 * CCP and VJ compressions. However, if the user has explicitly
906 * declare to not enable them from the command line, there is
907 * no point of having the comp module be pushed on the stream.
912 if ((!lcp_wantoptions[0].neg_accompression) &&
913 (!lcp_wantoptions[0].neg_pcompression) &&
914 (!ccp_protent.enabled_flag) &&
915 (!ipcp_wantoptions[0].neg_vj)) {
922 * establish_ppp - Turn the serial port into a ppp interface.
930 /* Pop any existing modules off the tty stream. */
932 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
933 || strcmp(tty_modules[i], "ptem") == 0
934 || ioctl(fd, I_POP, 0) < 0)
938 /* Push the async hdlc module and the compressor module. */
942 if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) {
943 error("Couldn't push PPP Async HDLC module: %m");
948 if (kdebugflag & 4) {
949 i = PPPDBG_LOG + PPPDBG_AHDLC;
950 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
953 * There's no need to push comp module if we don't intend
954 * to compress anything
956 if (any_compressions()) {
957 if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0)
958 error("Couldn't push PPP compression module: %m");
963 if (kdebugflag & 2) {
965 if (any_compressions())
967 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
970 /* Link the serial port under the PPP multiplexor. */
971 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
972 error("Can't link tty to PPP mux: %m");
980 * restore_loop - reattach the ppp unit to the loopback.
981 * This doesn't need to do anything because disestablish_ppp does it.
989 * disestablish_ppp - Restore the serial port to normal operation.
990 * It attempts to reconstruct the stream with the previously popped
991 * modules. This shouldn't call die() because it's called from die().
1000 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
1002 error("Can't unlink tty from PPP mux: %m");
1007 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
1009 for (i = tty_nmodules - 1; i >= 0; --i)
1010 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
1011 error("Couldn't restore tty module %s: %m",
1014 if (hungup && default_device && tty_sid > 0) {
1016 * If we have received a hangup, we need to send a SIGHUP
1017 * to the terminal's controlling process. The reason is
1018 * that the original stream head for the terminal hasn't
1019 * seen the M_HANGUP message (it went up through the ppp
1020 * driver to the stream head for our fd to /dev/ppp).
1022 kill(tty_sid, SIGHUP);
1028 * Check whether the link seems not to be 8-bit clean.
1036 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
1041 s = "bit 7 set to 1";
1044 s = "bit 7 set to 0";
1054 warn("Serial link is not 8-bit clean:");
1055 warn("All received characters had %s", s);
1060 * List of valid speeds.
1063 int speed_int, speed_val;
1132 { 115200, B115200 },
1135 { 153600, B153600 },
1138 { 230400, B230400 },
1141 { 307200, B307200 },
1144 { 460800, B460800 },
1150 * Translate from bits/second to a speed_t.
1153 translate_speed(bps)
1156 struct speed *speedp;
1160 for (speedp = speeds; speedp->speed_int; speedp++)
1161 if (bps == speedp->speed_int)
1162 return speedp->speed_val;
1163 warn("speed %d not supported", bps);
1168 * Translate from a speed_t to bits/second.
1174 struct speed *speedp;
1178 for (speedp = speeds; speedp->speed_int; speedp++)
1179 if (speed == speedp->speed_val)
1180 return speedp->speed_int;
1185 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
1186 * at the requested speed, etc. If `local' is true, set CLOCAL
1187 * regardless of whether the modem option was specified.
1190 set_up_tty(fd, local)
1194 struct termios tios;
1195 #if !defined (CRTSCTS)
1196 struct termiox tiox;
1199 if (!sync_serial && tcgetattr(fd, &tios) < 0)
1200 fatal("tcgetattr: %m");
1204 if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) {
1206 if (errno != ENOTTY)
1207 error("TCGETX: %m");
1211 if (!restore_term) {
1217 ioctl(fd, TIOCGWINSZ, &wsinfo);
1220 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
1223 tios.c_cflag |= CRTSCTS;
1224 else if (crtscts < 0)
1225 tios.c_cflag &= ~CRTSCTS;
1227 if (crtscts != 0 && !termiox_ok) {
1228 error("Can't set RTS/CTS flow control");
1229 } else if (crtscts > 0) {
1230 tiox.x_hflag |= RTSXOFF|CTSXON;
1231 } else if (crtscts < 0) {
1232 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
1236 tios.c_cflag |= CS8 | CREAD | HUPCL;
1237 if (local || !modem)
1238 tios.c_cflag |= CLOCAL;
1239 tios.c_iflag = IGNBRK | IGNPAR;
1242 tios.c_cc[VMIN] = 1;
1243 tios.c_cc[VTIME] = 0;
1245 if (crtscts == -2) {
1246 tios.c_iflag |= IXON | IXOFF;
1247 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
1248 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
1251 speed = translate_speed(inspeed);
1253 cfsetospeed(&tios, speed);
1254 cfsetispeed(&tios, speed);
1256 speed = cfgetospeed(&tios);
1258 * We can't proceed if the serial port speed is 0,
1259 * since that implies that the serial port is disabled.
1261 if ((speed == B0) && !sync_serial)
1262 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1265 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1266 fatal("tcsetattr: %m");
1269 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1270 error("TCSETXF: %m");
1274 baud_rate = inspeed = baud_rate_of(speed);
1280 * restore_tty - restore the terminal to the saved settings.
1287 if (!default_device) {
1289 * Turn off echoing, because otherwise we can get into
1290 * a loop with the tty and the modem echoing to each other.
1291 * We presume we are the sole user of this tty device, so
1292 * when we close it, it will revert to its defaults anyway.
1294 inittermios.c_lflag &= ~(ECHO | ECHONL);
1296 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1297 if (!hungup && errno != ENXIO)
1298 warn("tcsetattr: %m");
1300 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1301 if (!hungup && errno != ENXIO)
1302 error("TCSETXF: %m");
1306 ioctl(fd, TIOCSWINSZ, &wsinfo);
1312 * setdtr - control the DTR line on the serial port.
1313 * This is called from die(), so it shouldn't call die().
1319 int modembits = TIOCM_DTR;
1321 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1325 * open_loopback - open the device we use for getting packets
1326 * in demand mode. Under Solaris 2, we use our existing fd
1327 * to the ppp driver.
1336 * output - Output PPP packet.
1339 output(unit, p, len)
1348 dump_packet("sent", p, len);
1349 if (snoop_send_hook) snoop_send_hook(p, len);
1352 data.buf = (caddr_t) p;
1354 while (putmsg(pppfd, NULL, &data, 0) < 0) {
1355 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1357 error("Couldn't send packet: %m");
1361 pfd.events = POLLOUT;
1362 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
1368 * wait_input - wait until there is data available,
1369 * for the length of time specified by *timo (indefinite
1374 struct timeval *timo;
1378 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1379 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1384 * add_fd - add an fd to the set that wait_input waits for.
1391 for (n = 0; n < n_pollfds; ++n)
1392 if (pollfds[n].fd == fd)
1394 if (n_pollfds < MAX_POLLFDS) {
1395 pollfds[n_pollfds].fd = fd;
1396 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1399 error("Too many inputs!");
1403 * remove_fd - remove an fd from the set that wait_input waits for.
1410 for (n = 0; n < n_pollfds; ++n) {
1411 if (pollfds[n].fd == fd) {
1412 while (++n < n_pollfds)
1413 pollfds[n-1] = pollfds[n];
1422 * wait_loop_output - wait until there is data available on the
1423 * loopback, for the length of time specified by *timo (indefinite
1427 wait_loop_output(timo)
1428 struct timeval *timo;
1434 * wait_time - wait for a given length of time or until a
1435 * signal is received.
1439 struct timeval *timo;
1443 n = select(0, NULL, NULL, NULL, timo);
1444 if (n < 0 && errno != EINTR)
1445 fatal("select: %m");
1451 * read_packet - get a PPP packet from the serial device.
1457 struct strbuf ctrl, data;
1459 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1462 data.maxlen = PPP_MRU + PPP_HDRLEN;
1463 data.buf = (caddr_t) buf;
1464 ctrl.maxlen = sizeof(ctrlbuf);
1465 ctrl.buf = (caddr_t) ctrlbuf;
1467 len = getmsg(pppfd, &ctrl, &data, &flags);
1469 if (errno == EAGAIN || errno == EINTR)
1471 fatal("Error reading packet: %m");
1478 * Got a M_PROTO or M_PCPROTO message. Interpret it
1479 * as a DLPI primitive??
1482 dbglog("got dlpi prim 0x%x, len=%d",
1483 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1489 * get_loop_output - get outgoing packets from the ppp device,
1490 * and detect when we want to bring the real link up.
1491 * Return value is 1 if we need to bring up the link, 0 otherwise.
1499 while ((len = read_packet(inpacket_buf)) > 0) {
1500 if (loop_frame(inpacket_buf, len))
1507 * ppp_send_config - configure the transmit characteristics of
1508 * the ppp interface.
1511 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
1518 #if defined(INET6) && defined(SOL2)
1521 #endif /* defined(INET6) && defined(SOL2) */
1524 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1525 if (hungup && errno == ENXIO)
1527 error("Couldn't set MTU: %m");
1531 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1532 error("Couldn't set transmit ACCM: %m");
1535 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1536 cf[1] = COMP_PROT | COMP_AC;
1537 if (any_compressions() &&
1538 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1539 error("Couldn't set prot/AC compression: %m");
1543 /* set the MTU for IP as well */
1544 memset(&ifr, 0, sizeof(ifr));
1545 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1546 ifr.ifr_metric = link_mtu;
1547 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1548 error("Couldn't set IP MTU: %m");
1551 #if defined(INET6) && defined(SOL2)
1552 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1554 error("Couldn't open IPv6 socket: %m");
1556 memset(&lifr, 0, sizeof(lifr));
1557 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1558 lifr.lifr_mtu = link_mtu;
1559 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1561 error("Couldn't set IPv6 MTU: %m");
1564 #endif /* defined(INET6) && defined(SOL2) */
1568 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
1571 ppp_set_xaccm(unit, accm)
1579 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1580 if (!hungup || errno != ENXIO)
1581 warn("Couldn't set extended ACCM: %m");
1586 * ppp_recv_config - configure the receive-side characteristics of
1587 * the ppp interface.
1590 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
1598 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1599 if (hungup && errno == ENXIO)
1601 error("Couldn't set MRU: %m");
1605 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1606 error("Couldn't set receive ACCM: %m");
1609 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1610 cf[1] = DECOMP_PROT | DECOMP_AC;
1611 if (any_compressions() &&
1612 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1613 error("Couldn't set prot/AC decompression: %m");
1619 * ccp_test - ask kernel whether a given compression method
1620 * is acceptable for use.
1623 ccp_test(unit, opt_ptr, opt_len, for_transmit)
1624 int unit, opt_len, for_transmit;
1627 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1628 opt_ptr, opt_len, 0) >= 0)
1630 return (errno == ENOSR)? 0: -1;
1634 * ccp_flags_set - inform kernel about the current state of CCP.
1637 ccp_flags_set(unit, isopen, isup)
1638 int unit, isopen, isup;
1642 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1643 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1644 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1645 if (!hungup || errno != ENXIO)
1646 error("Couldn't set kernel CCP state: %m");
1651 * get_idle_time - return how long the link has been idle.
1654 get_idle_time(u, ip)
1656 struct ppp_idle *ip;
1658 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1662 * get_ppp_stats - return statistics for the link.
1665 get_ppp_stats(u, stats)
1667 struct pppd_stats *stats;
1672 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1673 error("Couldn't get link statistics: %m");
1676 stats->bytes_in = s.p.ppp_ibytes;
1677 stats->bytes_out = s.p.ppp_obytes;
1683 * set_filters - transfer the pass and active filters to the kernel.
1686 set_filters(pass, active)
1687 struct bpf_program *pass, *active;
1691 if (pass->bf_len > 0) {
1692 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1693 sizeof(struct bpf_program), 0) < 0) {
1694 error("Couldn't set pass-filter in kernel: %m");
1698 if (active->bf_len > 0) {
1699 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1700 sizeof(struct bpf_program), 0) < 0) {
1701 error("Couldn't set active-filter in kernel: %m");
1710 * ccp_fatal_error - returns 1 if decompression was disabled as a
1711 * result of an error detected after decompression of a packet,
1712 * 0 otherwise. This is necessary because of patent nonsense.
1715 ccp_fatal_error(unit)
1721 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1722 if (errno != ENXIO && errno != EINVAL)
1723 error("Couldn't get compression flags: %m");
1726 return cf[0] & CCP_FATALERROR;
1730 * sifvjcomp - config tcp header compression
1733 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1734 int u, vjcomp, xcidcomp, xmaxcid;
1740 maxcid[0] = xcidcomp;
1741 maxcid[1] = 15; /* XXX should be rmaxcid */
1742 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1743 error("Couldn't initialize VJ compression: %m");
1747 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1748 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1749 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1750 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1752 error("Couldn't enable VJ compression: %m");
1759 * sifup - Config the interface up and enable IP packets to pass.
1767 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1768 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1769 error("Couldn't mark interface up (get): %m");
1772 ifr.ifr_flags |= IFF_UP;
1773 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1774 error("Couldn't mark interface up (set): %m");
1782 * sifdown - Config the interface down and disable IP.
1792 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1793 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1794 error("Couldn't mark interface down (get): %m");
1797 ifr.ifr_flags &= ~IFF_UP;
1798 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1799 error("Couldn't mark interface down (set): %m");
1807 * sifnpmode - Set the mode for handling packets for a given NP.
1810 sifnpmode(u, proto, mode)
1818 npi[1] = (int) mode;
1819 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1820 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1826 #if defined(SOL2) && defined(INET6)
1828 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1837 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1842 memset(&lifr, 0, sizeof(lifr));
1843 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1844 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1849 lifr.lifr_flags |= IFF_UP;
1850 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1851 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1862 * sifdown - Config the IPv6 interface down and disable IPv6.
1871 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1875 memset(&lifr, 0, sizeof(lifr));
1876 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1877 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1882 lifr.lifr_flags &= ~IFF_UP;
1883 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1884 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1895 * sif6addr - Config the interface with an IPv6 link-local address
1903 struct sockaddr_storage laddr;
1904 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1907 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1911 memset(&lifr, 0, sizeof(lifr));
1912 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1915 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1916 * zero values, hence the interface token came to be zero too,
1917 * and without this, in.ndpd will complain
1919 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1920 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1926 * Set the interface address and destination address
1928 IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1929 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1934 memset(&lifr, 0, sizeof(lifr));
1935 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1936 IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1937 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1946 * cif6addr - Remove the IPv6 address from interface
1956 #endif /* defined(SOL2) && defined(INET6) */
1959 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1962 * sifaddr - Config the interface IP addresses and netmask.
1972 memset(&ifr, 0, sizeof(ifr));
1973 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1974 ifr.ifr_addr.sa_family = AF_INET;
1975 INET_ADDR(ifr.ifr_addr) = m;
1976 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1977 error("Couldn't set IP netmask: %m");
1980 ifr.ifr_addr.sa_family = AF_INET;
1981 INET_ADDR(ifr.ifr_addr) = o;
1982 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1983 error("Couldn't set local IP address: %m");
1988 * On some systems, we have to explicitly set the point-to-point
1989 * flag bit before we can set a destination address.
1991 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1992 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1993 ifr.ifr_flags |= IFF_POINTOPOINT;
1994 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1995 error("Couldn't mark interface pt-to-pt: %m");
1999 ifr.ifr_dstaddr.sa_family = AF_INET;
2000 INET_ADDR(ifr.ifr_dstaddr) = h;
2001 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
2002 error("Couldn't set remote IP address: %m");
2005 #if 0 /* now done in ppp_send_config */
2006 ifr.ifr_metric = link_mtu;
2007 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
2008 error("Couldn't set IP MTU: %m");
2017 * cifaddr - Clear the interface IP addresses, and delete routes
2018 * through the interface if possible.
2025 #if defined(__USLC__) /* was: #if 0 */
2026 cifroute(unit, ouraddr, hisaddr);
2028 notice("Removing ppp interface unit");
2029 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
2030 error("Can't remove ppp interface unit: %m");
2041 * sifdefaultroute - assign a default route through the address given.
2044 sifdefaultroute(u, l, g)
2050 #if defined(__USLC__)
2051 g = l; /* use the local address as gateway */
2053 memset(&rt, 0, sizeof(rt));
2054 rt.rt_dst.sa_family = AF_INET;
2055 INET_ADDR(rt.rt_dst) = 0;
2056 rt.rt_gateway.sa_family = AF_INET;
2057 INET_ADDR(rt.rt_gateway) = g;
2058 rt.rt_flags = RTF_GATEWAY;
2060 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
2061 error("Can't add default route: %m");
2065 default_route_gateway = g;
2070 * cifdefaultroute - delete a default route through the address given.
2073 cifdefaultroute(u, l, g)
2079 #if defined(__USLC__)
2080 g = l; /* use the local address as gateway */
2082 memset(&rt, 0, sizeof(rt));
2083 rt.rt_dst.sa_family = AF_INET;
2084 INET_ADDR(rt.rt_dst) = 0;
2085 rt.rt_gateway.sa_family = AF_INET;
2086 INET_ADDR(rt.rt_gateway) = g;
2087 rt.rt_flags = RTF_GATEWAY;
2089 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2090 error("Can't delete default route: %m");
2094 default_route_gateway = 0;
2099 * sifproxyarp - Make a proxy ARP entry for the peer.
2102 sifproxyarp(unit, hisaddr)
2106 struct arpreq arpreq;
2108 memset(&arpreq, 0, sizeof(arpreq));
2109 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
2112 arpreq.arp_pa.sa_family = AF_INET;
2113 INET_ADDR(arpreq.arp_pa) = hisaddr;
2114 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
2115 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
2116 error("Couldn't set proxy ARP entry: %m");
2120 proxy_arp_addr = hisaddr;
2125 * cifproxyarp - Delete the proxy ARP entry for the peer.
2128 cifproxyarp(unit, hisaddr)
2132 struct arpreq arpreq;
2134 memset(&arpreq, 0, sizeof(arpreq));
2135 arpreq.arp_pa.sa_family = AF_INET;
2136 INET_ADDR(arpreq.arp_pa) = hisaddr;
2137 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
2138 error("Couldn't delete proxy ARP entry: %m");
2147 * get_ether_addr - get the hardware address of an interface on the
2148 * the same subnet as ipaddr.
2153 get_ether_addr(ipaddr, hwaddr)
2155 struct sockaddr *hwaddr;
2157 struct ifreq *ifr, *ifend, ifreq;
2160 u_int32_t ina, mask;
2163 * Scan through the system's network interfaces.
2166 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2169 ifc.ifc_len = nif * sizeof(struct ifreq);
2170 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2171 if (ifc.ifc_buf == 0)
2173 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2174 warn("Couldn't get system interface list: %m");
2178 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2179 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2180 if (ifr->ifr_addr.sa_family != AF_INET)
2183 * Check that the interface is up, and not point-to-point or loopback.
2185 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2186 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2188 if ((ifreq.ifr_flags &
2189 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
2190 != (IFF_UP|IFF_BROADCAST))
2193 * Get its netmask and check that it's on the right subnet.
2195 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2197 ina = INET_ADDR(ifr->ifr_addr);
2198 mask = INET_ADDR(ifreq.ifr_addr);
2199 if ((ipaddr & mask) == (ina & mask))
2204 warn("No suitable interface found for proxy ARP");
2209 info("found interface %s for proxy ARP", ifr->ifr_name);
2210 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2211 error("Couldn't get hardware address for %s", ifr->ifr_name);
2221 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2224 get_hw_addr_dlpi(name, hwaddr)
2226 struct sockaddr *hwaddr;
2229 int unit, iffd, adrlen;
2230 unsigned char *adrp;
2233 union DL_primitives prim;
2238 * We have to open the device and ask it for its hardware address.
2239 * First split apart the device name and unit.
2241 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2242 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2249 * Open the device and do a DLPI attach and phys_addr_req.
2251 iffd = open(ifdev, O_RDWR);
2253 error("Can't open %s: %m", ifdev);
2256 if (dlpi_attach(iffd, unit) < 0
2257 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2258 || dlpi_info_req(iffd) < 0
2259 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2264 adrlen = reply.prim.info_ack.dl_addr_length;
2265 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2267 #if DL_CURRENT_VERSION >= 2
2268 if (reply.prim.info_ack.dl_sap_length < 0)
2269 adrlen += reply.prim.info_ack.dl_sap_length;
2271 adrp += reply.prim.info_ack.dl_sap_length;
2274 hwaddr->sa_family = AF_UNSPEC;
2275 memcpy(hwaddr->sa_data, adrp, adrlen);
2280 * get_hw_addr - obtain the hardware address for a named interface.
2283 get_hw_addr(name, ina, hwaddr)
2286 struct sockaddr *hwaddr;
2288 /* New way - get the address by doing an arp request. */
2292 s = socket(AF_INET, SOCK_DGRAM, 0);
2295 memset(&req, 0, sizeof(req));
2296 req.arp_pa.sa_family = AF_INET;
2297 INET_ADDR(req.arp_pa) = ina;
2298 if (ioctl(s, SIOCGARP, &req) < 0) {
2299 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2302 *hwaddr = req.arp_ha;
2303 hwaddr->sa_family = AF_UNSPEC;
2309 dlpi_attach(fd, ppa)
2312 dl_attach_req_t req;
2315 req.dl_primitive = DL_ATTACH_REQ;
2317 buf.len = sizeof(req);
2318 buf.buf = (void *) &req;
2319 return putmsg(fd, &buf, NULL, RS_HIPRI);
2329 req.dl_primitive = DL_INFO_REQ;
2330 buf.len = sizeof(req);
2331 buf.buf = (void *) &req;
2332 return putmsg(fd, &buf, NULL, RS_HIPRI);
2336 dlpi_get_reply(fd, reply, expected_prim, maxlen)
2337 union DL_primitives *reply;
2338 int fd, expected_prim, maxlen;
2345 * Use poll to wait for a message with a timeout.
2348 pfd.events = POLLIN | POLLPRI;
2350 n = poll(&pfd, 1, 1000);
2351 } while (n == -1 && errno == EINTR);
2358 buf.maxlen = maxlen;
2359 buf.buf = (void *) reply;
2361 if (getmsg(fd, &buf, NULL, &flags) < 0)
2364 if (buf.len < sizeof(ulong)) {
2366 dbglog("dlpi response short (len=%d)\n", buf.len);
2370 if (reply->dl_primitive == expected_prim)
2374 if (reply->dl_primitive == DL_ERROR_ACK) {
2375 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2376 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2377 reply->error_ack.dl_error_primitive);
2379 dbglog("dlpi unexpected response prim %x\n",
2380 reply->dl_primitive);
2388 * Return user specified netmask, modified by any mask we might determine
2389 * for address `addr' (in network byte order).
2390 * Here we scan through the system's list of interfaces, looking for
2391 * any non-point-to-point interfaces which might appear to be on the same
2392 * network as `addr'. If we find any, we OR in their netmask to the
2393 * user-specified netmask.
2399 u_int32_t mask, nmask, ina;
2400 struct ifreq *ifr, *ifend, ifreq;
2405 if (IN_CLASSA(addr)) /* determine network mask for address class */
2406 nmask = IN_CLASSA_NET;
2407 else if (IN_CLASSB(addr))
2408 nmask = IN_CLASSB_NET;
2410 nmask = IN_CLASSC_NET;
2411 /* class D nets are disallowed by bad_ip_adrs */
2412 mask = netmask | htonl(nmask);
2415 * Scan through the system's network interfaces.
2418 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2421 ifc.ifc_len = nif * sizeof(struct ifreq);
2422 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2423 if (ifc.ifc_buf == 0)
2425 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2426 warn("Couldn't get system interface list: %m");
2430 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2431 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2433 * Check the interface's internet address.
2435 if (ifr->ifr_addr.sa_family != AF_INET)
2437 ina = INET_ADDR(ifr->ifr_addr);
2438 if ((ntohl(ina) & nmask) != (addr & nmask))
2441 * Check that the interface is up, and not point-to-point or loopback.
2443 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2444 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2446 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2450 * Get its netmask and OR it into our mask.
2452 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2454 mask |= INET_ADDR(ifreq.ifr_addr);
2462 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2465 logwtmp(line, name, host)
2466 const char *line, *name, *host;
2468 static struct utmpx utmpx;
2472 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2473 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
2474 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2475 utmpx.ut_pid = getpid();
2476 utmpx.ut_type = USER_PROCESS;
2478 utmpx.ut_type = DEAD_PROCESS;
2480 gettimeofday(&utmpx.ut_tv, NULL);
2481 updwtmpx("/var/adm/wtmpx", &utmpx);
2485 * get_host_seed - return the serial number of this machine.
2492 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2493 error("sysinfo: %m");
2496 return (int) strtoul(buf, NULL, 16);
2500 strioctl(fd, cmd, ptr, ilen, olen)
2501 int fd, cmd, ilen, olen;
2504 struct strioctl str;
2510 if (ioctl(fd, I_STR, &str) == -1)
2512 if (str.ic_len != olen)
2513 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2514 olen, str.ic_len, cmd);
2520 * lock - create a lock file for the named lock device
2523 #define LOCK_PREFIX "/var/spool/locks/LK."
2524 static char lock_file[40]; /* name of lock file created */
2534 if (stat(dev, &sbuf) < 0) {
2535 error("Can't get device number for %s: %m", dev);
2538 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2539 error("Can't lock %s: not a character device", dev);
2542 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2543 LOCK_PREFIX, major(sbuf.st_dev),
2544 major(sbuf.st_rdev), minor(sbuf.st_rdev));
2546 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2548 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2549 /* Read the lock file to find out who has the device locked */
2550 n = read(fd, ascii_pid, 11);
2552 error("Can't read pid from lock file %s", lock_file);
2556 pid = atoi(ascii_pid);
2557 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2558 /* pid no longer exists - remove the lock file */
2559 if (unlink(lock_file) == 0) {
2561 notice("Removed stale lock on %s (pid %d)",
2565 warn("Couldn't remove stale lock on %s",
2568 notice("Device %s is locked by pid %d",
2573 error("Can't create lock file %s: %m", lock_file);
2578 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2579 write(fd, ascii_pid, 11);
2586 * unlock - remove our lockfile
2599 * cifroute - delete a route through the addresses given.
2602 cifroute(u, our, his)
2608 memset(&rt, 0, sizeof(rt));
2609 rt.rt_dst.sa_family = AF_INET;
2610 INET_ADDR(rt.rt_dst) = his;
2611 rt.rt_gateway.sa_family = AF_INET;
2612 INET_ADDR(rt.rt_gateway) = our;
2613 rt.rt_flags = RTF_HOST;
2615 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2616 error("Can't delete route: %m");
2624 * have_route_to - determine if the system has a route to the specified
2625 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
2626 * `addr' is in network byte order.
2627 * For demand mode to work properly, we have to ignore routes
2628 * through our own interface.
2630 #ifndef T_CURRENT /* needed for Solaris 2.5 */
2631 #define T_CURRENT MI_T_CURRENT
2639 int fd, r, flags, i;
2641 struct T_optmgmt_req req;
2645 struct T_optmgmt_ack ack;
2646 unsigned char space[64];
2649 struct strbuf cbuf, dbuf;
2651 mib2_ipRouteEntry_t routes[8];
2652 mib2_ipRouteEntry_t *rp;
2654 fd = open(mux_dev_name, O_RDWR);
2656 warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2660 req.req.PRIM_type = T_OPTMGMT_REQ;
2661 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2662 req.req.OPT_length = sizeof(req.hdr);
2663 req.req.MGMT_flags = T_CURRENT;
2665 req.hdr.level = MIB2_IP;
2669 cbuf.buf = (char *) &req;
2670 cbuf.len = sizeof(req);
2672 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2673 warn("have_route_to: putmsg: %m");
2679 cbuf.buf = (char *) &ack;
2680 cbuf.maxlen = sizeof(ack);
2681 dbuf.buf = (char *) routes;
2682 dbuf.maxlen = sizeof(routes);
2684 r = getmsg(fd, &cbuf, &dbuf, &flags);
2686 warn("have_route_to: getmsg: %m");
2691 if (cbuf.len < sizeof(struct T_optmgmt_ack)
2692 || ack.ack.PRIM_type != T_OPTMGMT_ACK
2693 || ack.ack.MGMT_flags != T_SUCCESS
2694 || ack.ack.OPT_length < sizeof(struct opthdr)) {
2695 dbglog("have_route_to: bad message len=%d prim=%d",
2696 cbuf.len, ack.ack.PRIM_type);
2701 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2702 if (rh->level == 0 && rh->name == 0)
2704 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2705 while (r == MOREDATA)
2706 r = getmsg(fd, NULL, &dbuf, &flags);
2711 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2712 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2713 if (rp->ipRouteMask != ~0) {
2714 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2715 rp->ipRouteDest, rp->ipRouteNextHop,
2717 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2718 && rp->ipRouteNextHop != remote_addr)
2724 r = getmsg(fd, NULL, &dbuf, &flags);
2735 * get_pty - get a pty master/slave pair and chown the slave side to
2736 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
2739 get_pty(master_fdp, slave_fdp, slave_name, uid)
2747 struct termios tios;
2749 mfd = open("/dev/ptmx", O_RDWR);
2751 error("Couldn't open pty master: %m");
2755 pty_name = ptsname(mfd);
2756 if (pty_name == NULL) {
2757 error("Couldn't get name of pty slave");
2761 if (chown(pty_name, uid, -1) < 0)
2762 warn("Couldn't change owner of pty slave: %m");
2763 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2764 warn("Couldn't change permissions on pty slave: %m");
2765 if (unlockpt(mfd) < 0)
2766 warn("Couldn't unlock pty slave: %m");
2768 sfd = open(pty_name, O_RDWR);
2770 error("Couldn't open pty slave %s: %m", pty_name);
2774 if (ioctl(sfd, I_PUSH, "ptem") < 0)
2775 warn("Couldn't push ptem module on pty slave: %m");
2777 dbglog("Using %s", pty_name);
2778 strlcpy(slave_name, pty_name, MAXPATHLEN);