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) 1994 The Australian National University.
22 * All rights reserved.
24 * Permission to use, copy, modify, and distribute this software and its
25 * documentation is hereby granted, provided that the above copyright
26 * notice appears in all copies. This software is provided without any
27 * warranty, express or implied. The Australian National University
28 * makes no representations about the suitability of this software for
31 * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
32 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
33 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
34 * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
37 * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
38 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
39 * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
40 * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
41 * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
45 #define RCSID "$Id: sys-solaris.c,v 1.7 2002/02/12 20:07:09 dfs Exp $"
57 #include <sys/termiox.h>
61 #include <sys/types.h>
62 #include <sys/ioccom.h>
63 #include <sys/stream.h>
64 #include <sys/stropts.h>
65 #include <sys/socket.h>
66 #include <sys/sockio.h>
67 #include <sys/sysmacros.h>
68 #include <sys/systeminfo.h>
71 #include <sys/mkdev.h>
73 #include <net/if_arp.h>
74 #include <net/route.h>
75 #include <net/ppp_defs.h>
76 #include <net/pppio.h>
77 #include <netinet/in.h>
79 #include <sys/tihdr.h>
80 #include <sys/tiuser.h>
81 #include <inet/common.h>
82 #include <inet/mib2.h>
83 #include <sys/ethernet.h>
92 #if !defined(PPP_DRV_NAME)
93 #define PPP_DRV_NAME "ppp"
94 #endif /* !defined(PPP_DRV_NAME) */
96 #if !defined(PPP_DEV_NAME)
97 #define PPP_DEV_NAME "/dev/" PPP_DRV_NAME
98 #endif /* !defined(PPP_DEV_NAME) */
100 #if !defined(AHDLC_MOD_NAME)
101 #define AHDLC_MOD_NAME "ppp_ahdl"
102 #endif /* !defined(AHDLC_MOD_NAME) */
104 #if !defined(COMP_MOD_NAME)
105 #define COMP_MOD_NAME "ppp_comp"
106 #endif /* !defined(COMP_MOD_NAME) */
108 #if !defined(IP_DEV_NAME)
109 #define IP_DEV_NAME "/dev/ip"
110 #endif /* !defined(IP_DEV_NAME) */
112 #if !defined(IP_MOD_NAME)
113 #define IP_MOD_NAME "ip"
114 #endif /* !defined(IP_MOD_NAME) */
116 #if !defined(UDP_DEV_NAME) && defined(SOL2)
117 #define UDP_DEV_NAME "/dev/udp"
118 #endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */
120 #if !defined(UDP6_DEV_NAME) && defined(SOL2)
121 #define UDP6_DEV_NAME "/dev/udp6"
122 #endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */
124 static const char rcsid[] = RCSID;
128 * "/dev/udp" is used as a multiplexor to PLINK the interface stream
129 * under. It is used in place of "/dev/ip" since STREAMS will not let
130 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the
131 * driver at the bottom of the tunneling interfaces stream.
133 static char *mux_dev_name = UDP_DEV_NAME;
135 static char *mux_dev_name = IP_DEV_NAME;
138 static int fdmuxid = -1;
140 static int ipmuxid = -1;
142 #if defined(INET6) && defined(SOL2)
143 static int ip6fd; /* IP file descriptor */
144 static int ip6muxid = -1; /* Multiplexer file descriptor */
145 static int if6_is_up = 0; /* IPv6 interface has been marked up */
147 #define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \
148 s->sin6_addr.s6_addr32[0] = htonl(as); \
149 eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \
150 s->sin6_family = AF_INET6; \
151 l.lifr_addr.ss_family = AF_INET6; \
152 l.lifr_addrlen = 10; \
153 l.lifr_addr = laddr; \
156 #define IN6_LLADDR_FROM_EUI64(l, s, eui64) \
157 _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000)
159 #define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \
160 _IN6_LLX_FROM_EUI64(l, s, eui64, 0)
162 #endif /* defined(INET6) && defined(SOL2) */
164 #if defined(INET6) && defined(SOL2)
165 static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */
167 static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */
168 #define MAXIFS 256 /* Max # of interfaces */
169 #endif /* defined(INET6) && defined(SOL2) */
171 static int restore_term;
172 static struct termios inittermios;
174 static struct termiox inittermiox;
175 static int termiox_ok;
177 static struct winsize wsinfo; /* Initial window size info */
178 static pid_t tty_sid; /* original session ID for terminal */
180 extern u_char inpacket_buf[]; /* borrowed from main.c */
182 #define MAX_POLLFDS 32
183 static struct pollfd pollfds[MAX_POLLFDS];
184 static int n_pollfds;
186 static int link_mtu, link_mru;
189 static int tty_nmodules;
190 static char tty_modules[NMODULES][FMNAMESZ+1];
191 static int tty_npushed;
193 static int if_is_up; /* Interface has been marked up */
194 static u_int32_t remote_addr; /* IP address of peer */
195 static u_int32_t default_route_gateway; /* Gateway for default route added */
196 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
198 /* Prototypes for procedures local to this file. */
199 static int translate_speed __P((int));
200 static int baud_rate_of __P((int));
201 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
202 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
203 static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
204 static int dlpi_attach __P((int, int));
205 static int dlpi_info_req __P((int));
206 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
207 static int strioctl __P((int, int, void *, int, int));
211 * sifppa - Sets interface ppa
213 * without setting the ppa, ip module will return EINVAL upon setting the
214 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects
215 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before
216 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to
217 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving
218 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa
219 * is required because the ppp DLPI provider advertises itself as
220 * a DLPI style 2 type, which requires a point of attachment to be
221 * specified. The only way the user can specify a point of attachment
222 * is via SIOCSLIFNAME or IF_UNITSEL.
224 * Such changes in the behavior of ip module was made to meet new or
225 * evolving standards requirements.
233 return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa);
237 #if defined(SOL2) && defined(INET6)
239 * get_first_ethernet - returns the first Ethernet interface name found in
240 * the system, or NULL if none is found
242 * NOTE: This is the lifreq version (Solaris 8 and above)
249 struct lifreq *plifreq;
251 int fd, num_ifs, i, found;
255 fd = socket(AF_INET, SOCK_DGRAM, 0);
261 * Find out how many interfaces are running
263 lifn.lifn_family = AF_UNSPEC;
264 lifn.lifn_flags = LIFC_NOXMIT;
265 if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) {
267 error("could not determine number of interfaces: %m");
271 num_ifs = lifn.lifn_count;
272 req_size = num_ifs * sizeof(struct lifreq);
273 req = malloc(req_size);
276 error("out of memory");
281 * Get interface configuration info for all interfaces
283 lifc.lifc_family = AF_UNSPEC;
284 lifc.lifc_flags = LIFC_NOXMIT;
285 lifc.lifc_len = req_size;
287 if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) {
290 error("SIOCGLIFCONF: %m");
295 * And traverse each interface to look specifically for the first
296 * occurence of an Ethernet interface which has been marked up
298 plifreq = lifc.lifc_req;
300 for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) {
302 if (strchr(plifreq->lifr_name, ':') != NULL)
305 memset(&lifr, 0, sizeof(lifr));
306 strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name));
307 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
310 error("SIOCGLIFFLAGS: %m");
313 fl = lifr.lifr_flags;
315 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
316 != (IFF_UP | IFF_BROADCAST))
326 strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name));
327 return (char *)first_ether_name;
333 * get_first_ethernet - returns the first Ethernet interface name found in
334 * the system, or NULL if none is found
336 * NOTE: This is the ifreq version (before Solaris 8).
342 struct ifreq *pifreq;
344 int fd, num_ifs, i, found;
348 fd = socket(AF_INET, SOCK_DGRAM, 0);
354 * Find out how many interfaces are running
356 if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) {
360 req_size = num_ifs * sizeof(struct ifreq);
361 req = malloc(req_size);
364 error("out of memory");
369 * Get interface configuration info for all interfaces
371 ifc.ifc_len = req_size;
373 if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) {
376 error("SIOCGIFCONF: %m");
381 * And traverse each interface to look specifically for the first
382 * occurence of an Ethernet interface which has been marked up
384 pifreq = ifc.ifc_req;
386 for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) {
388 if (strchr(pifreq->ifr_name, ':') != NULL)
391 memset(&ifr, 0, sizeof(ifr));
392 strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name));
393 if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
396 error("SIOCGIFFLAGS: %m");
401 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
402 != (IFF_UP | IFF_BROADCAST))
412 strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name));
413 return (char *)first_ether_name;
417 #endif /* defined(SOL2) && defined(INET6) */
421 * get_if_hwaddr - get the hardware address for the specified
422 * network interface device.
425 get_if_hwaddr(u_char *addr, char *if_name)
427 struct sockaddr s_eth_addr;
428 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
434 * Send DL_INFO_REQ to the driver to solicit its MAC address
436 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
437 error("could not obtain hardware address for %s", if_name);
441 memcpy(addr, eth_addr->ether_addr_octet, 6);
446 #if defined(SOL2) && defined(INET6)
448 * slifname - Sets interface ppa and flags
450 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must
451 * be set in order to declare this as an IPv6 interface
461 memset(&lifr, 0, sizeof(lifr));
462 ret = ioctl(fd, SIOCGLIFFLAGS, &lifr);
466 lifr.lifr_flags |= IFF_IPV6;
467 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4);
469 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
471 ret = ioctl(fd, SIOCSLIFNAME, &lifr);
481 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
483 * walks the list of valid ethernet interfaces, and convert the first
484 * found 48-bit MAC address into EUI 64. caller also assumes that
485 * the system has a properly configured Ethernet interface for this
486 * function to return non-zero.
489 ether_to_eui64(eui64_t *p_eui64)
491 struct sockaddr s_eth_addr;
492 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
495 if ((if_name = get_first_ethernet()) == NULL) {
496 error("no persistent id can be found");
501 * Send DL_INFO_REQ to the driver to solicit its MAC address
503 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
504 error("could not obtain hardware address for %s", if_name);
509 * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
511 p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02;
512 p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF);
513 p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF);
514 p_eui64->e8[3] = 0xFF;
515 p_eui64->e8[4] = 0xFE;
516 p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF);
517 p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF);
518 p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF);
522 #endif /* defined(SOL2) && defined(INET6) */
525 * sys_init - System-dependent initialization.
532 #if defined(INET6) && defined(SOL2)
535 #endif /* defined(INET6) && defined(SOL2) */
538 union DL_primitives prim;
541 #endif /* !defined(SOL2) */
543 ipfd = open(mux_dev_name, O_RDWR, 0);
545 fatal("Couldn't open IP device: %m");
547 #if defined(INET6) && defined(SOL2)
548 ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0);
550 fatal("Couldn't open IP device (2): %m");
551 #endif /* defined(INET6) && defined(SOL2) */
553 if (default_device && !notty)
554 tty_sid = getsid((pid_t)0);
556 pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0);
558 fatal("Can't open %s: %m", PPP_DEV_NAME);
559 if (kdebugflag & 1) {
560 x = PPPDBG_LOG + PPPDBG_DRIVER;
561 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
564 /* Assign a new PPA and get its unit number. */
565 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
566 fatal("Can't create new PPP interface: %m");
570 * Since sys_init() is called prior to ifname being set in main(),
571 * we need to get the ifname now, otherwise slifname(), and others,
572 * will fail, or maybe, I should move them to a later point ?
573 * <adi.masputra@sun.com>
575 sprintf(ifname, PPP_DRV_NAME "%d", ifunit);
576 #endif /* defined(SOL2) */
578 * Open the ppp device again and link it under the ip multiplexor.
579 * IP will assign a unit number which hopefully is the same as ifunit.
580 * I don't know any way to be certain they will be the same. :-(
582 ifd = open(PPP_DEV_NAME, O_RDWR, 0);
584 fatal("Can't open %s (2): %m", PPP_DEV_NAME);
585 if (kdebugflag & 1) {
586 x = PPPDBG_LOG + PPPDBG_DRIVER;
587 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
590 #if defined(INET6) && defined(SOL2)
591 i6fd = open(PPP_DEV_NAME, O_RDWR, 0);
594 fatal("Can't open %s (3): %m", PPP_DEV_NAME);
596 if (kdebugflag & 1) {
597 x = PPPDBG_LOG + PPPDBG_DRIVER;
598 strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0);
600 #endif /* defined(INET6) && defined(SOL2) */
603 if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) {
607 #endif /* defined(INET6) */
608 fatal("Can't push IP module: %m");
612 * Assign ppa according to the unit number returned by ppp device
613 * after plumbing is completed above.
615 if (sifppa(ifd, ifunit) < 0) {
619 #endif /* defined(INET6) */
620 fatal("Can't set ppa for unit %d: %m", ifunit);
625 * An IPv6 interface is created anyway, even when the user does not
626 * explicitly enable it. Note that the interface will be marked
627 * IPv6 during slifname().
629 if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) {
632 fatal("Can't push IP module (2): %m");
636 * Assign ppa according to the unit number returned by ppp device
637 * after plumbing is completed above. In addition, mark the interface
638 * as an IPv6 interface.
640 if (slifname(i6fd, ifunit) < 0) {
643 fatal("Can't set ifname for unit %d: %m", ifunit);
645 #endif /* defined(INET6) */
647 ipmuxid = ioctl(ipfd, I_PLINK, ifd);
652 #endif /* defined(INET6) */
653 fatal("Can't I_PLINK PPP device to IP: %m");
656 memset(&ifr, 0, sizeof(ifr));
657 sprintf(ifr.ifr_name, "%s", ifname);
658 ifr.ifr_ip_muxid = ipmuxid;
661 * In Sol 8 and later, STREAMS dynamic module plumbing feature exists.
662 * This is so that an arbitrary module can be inserted, or deleted,
663 * between ip module and the device driver without tearing down the
664 * existing stream. Such feature requires the mux ids, which is set
665 * by SIOCSIFMUXID (or SIOCLSIFMUXID).
667 if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) {
668 ioctl(ipfd, I_PUNLINK, ipmuxid);
671 #endif /* defined(INET6) */
672 fatal("SIOCSIFMUXID: %m");
675 #else /* else if !defined(SOL2) */
677 if (dlpi_attach(ifd, ifunit) < 0 ||
678 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
680 fatal("Can't attach to ppp%d: %m", ifunit);
683 ipmuxid = ioctl(ipfd, I_LINK, ifd);
686 fatal("Can't link PPP device to IP: %m");
687 #endif /* defined(SOL2) */
689 #if defined(INET6) && defined(SOL2)
690 ip6muxid = ioctl(ip6fd, I_PLINK, i6fd);
693 ioctl(ipfd, I_PUNLINK, ipmuxid);
694 fatal("Can't I_PLINK PPP device to IP (2): %m");
697 memset(&lifr, 0, sizeof(lifr));
698 sprintf(lifr.lifr_name, "%s", ifname);
699 lifr.lifr_ip_muxid = ip6muxid;
702 * Let IP know of the mux id [see comment for SIOCSIFMUXID above]
704 if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) {
705 ioctl(ipfd, I_PUNLINK, ipmuxid);
706 ioctl(ip6fd, I_PUNLINK, ip6muxid);
707 fatal("Can't link PPP device to IP (2): %m");
709 #endif /* defined(INET6) && defined(SOL2) */
712 /* Set the interface name for the link. */
713 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), PPP_DRV_NAME "%d", ifunit);
714 ifr.ifr_metric = ipmuxid;
715 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
716 fatal("Can't set interface name %s: %m", ifr.ifr_name);
717 #endif /* !defined(SOL2) */
723 * sys_cleanup - restore any system state we modified before exiting:
724 * mark the interface down, delete default route and/or proxy arp entry.
725 * This should call die() because it's called from die().
734 #endif /* defined(INET6) */
735 #endif /* defined(SOL2) */
737 #if defined(SOL2) && defined(INET6)
740 #endif /* defined(SOL2) && defined(INET6) */
743 if (default_route_gateway)
744 cifdefaultroute(0, default_route_gateway, default_route_gateway);
746 cifproxyarp(0, proxy_arp_addr);
749 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
750 * unlink and re-link the modules, causing the muxid to change.
752 memset(&ifr, 0, sizeof(ifr));
753 sprintf(ifr.ifr_name, "%s", ifname);
754 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
755 error("SIOCGIFFLAGS: %m");
759 if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) {
760 error("SIOCGIFMUXID: %m");
764 ipmuxid = ifr.ifr_ip_muxid;
766 if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) {
767 error("Can't I_PUNLINK PPP from IP: %m");
772 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
773 * unlink and re-link the modules, causing the muxid to change.
775 memset(&lifr, 0, sizeof(lifr));
776 sprintf(lifr.lifr_name, "%s", ifname);
777 if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) {
778 error("SIOCGLIFFLAGS: %m");
782 if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) {
783 error("SIOCGLIFMUXID: %m");
787 ip6muxid = lifr.lifr_ip_muxid;
789 if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) {
790 error("Can't I_PUNLINK PPP from IP (2): %m");
792 #endif /* defined(INET6) */
793 #endif /* defined(SOL2) */
797 * sys_close - Clean up in a child process before execing.
803 #if defined(INET6) && defined(SOL2)
805 #endif /* defined(INET6) && defined(SOL2) */
811 * sys_check_options - check the options that the user specified
821 * daemon - Detach us from controlling terminal session.
824 daemon(nochdir, noclose)
825 int nochdir, noclose;
829 if ((pid = fork()) < 0)
832 exit(0); /* parent dies */
837 fclose(stdin); /* don't need stdin, stdout, stderr */
846 * ppp_available - check whether the system has any ppp interfaces
853 return stat(PPP_DEV_NAME, &buf) >= 0;
857 * any_compressions - see if compression is enabled or not
859 * In the STREAMS implementation of kernel-portion pppd,
860 * the comp STREAMS module performs the ACFC, PFC, as well
861 * CCP and VJ compressions. However, if the user has explicitly
862 * declare to not enable them from the command line, there is
863 * no point of having the comp module be pushed on the stream.
868 if ((!lcp_wantoptions[0].neg_accompression) &&
869 (!lcp_wantoptions[0].neg_pcompression) &&
870 (!ccp_protent.enabled_flag) &&
871 (!ipcp_wantoptions[0].neg_vj)) {
878 * tty_establish_ppp - Turn the serial port into a ppp interface.
881 tty_establish_ppp(fd)
886 /* Pop any existing modules off the tty stream. */
888 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
889 || strcmp(tty_modules[i], "ptem") == 0
890 || ioctl(fd, I_POP, 0) < 0)
894 /* Push the async hdlc module and the compressor module. */
898 if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) {
899 error("Couldn't push PPP Async HDLC module: %m");
904 if (kdebugflag & 4) {
905 i = PPPDBG_LOG + PPPDBG_AHDLC;
906 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
909 * There's no need to push comp module if we don't intend
910 * to compress anything
912 if (any_compressions()) {
913 if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0)
914 error("Couldn't push PPP compression module: %m");
919 if (kdebugflag & 2) {
921 if (any_compressions())
923 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
926 /* Link the serial port under the PPP multiplexor. */
927 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
928 error("Can't link tty to PPP mux: %m");
936 * tty_disestablish_ppp - Restore the serial port to normal operation.
937 * It attempts to reconstruct the stream with the previously popped
938 * modules. This shouldn't call die() because it's called from die().
941 tty_disestablish_ppp(fd)
947 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
949 error("Can't unlink tty from PPP mux: %m");
954 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
956 for (i = tty_nmodules - 1; i >= 0; --i)
957 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
958 error("Couldn't restore tty module %s: %m",
961 if (hungup && default_device && tty_sid > 0) {
963 * If we have received a hangup, we need to send a SIGHUP
964 * to the terminal's controlling process. The reason is
965 * that the original stream head for the terminal hasn't
966 * seen the M_HANGUP message (it went up through the ppp
967 * driver to the stream head for our fd to /dev/ppp).
969 kill(tty_sid, SIGHUP);
975 * Check whether the link seems not to be 8-bit clean.
983 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
988 s = "bit 7 set to 1";
991 s = "bit 7 set to 0";
1001 warn("Serial link is not 8-bit clean:");
1002 warn("All received characters had %s", s);
1007 * List of valid speeds.
1010 int speed_int, speed_val;
1079 { 115200, B115200 },
1082 { 153600, B153600 },
1085 { 230400, B230400 },
1088 { 307200, B307200 },
1091 { 460800, B460800 },
1097 * Translate from bits/second to a speed_t.
1100 translate_speed(bps)
1103 struct speed *speedp;
1107 for (speedp = speeds; speedp->speed_int; speedp++)
1108 if (bps == speedp->speed_int)
1109 return speedp->speed_val;
1110 warn("speed %d not supported", bps);
1115 * Translate from a speed_t to bits/second.
1121 struct speed *speedp;
1125 for (speedp = speeds; speedp->speed_int; speedp++)
1126 if (speed == speedp->speed_val)
1127 return speedp->speed_int;
1132 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
1133 * at the requested speed, etc. If `local' is true, set CLOCAL
1134 * regardless of whether the modem option was specified.
1137 set_up_tty(fd, local)
1141 struct termios tios;
1142 #if !defined (CRTSCTS)
1143 struct termiox tiox;
1146 if (!sync_serial && tcgetattr(fd, &tios) < 0)
1147 fatal("tcgetattr: %m");
1151 if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) {
1153 if (errno != ENOTTY)
1154 error("TCGETX: %m");
1158 if (!restore_term) {
1164 ioctl(fd, TIOCGWINSZ, &wsinfo);
1167 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
1170 tios.c_cflag |= CRTSCTS;
1171 else if (crtscts < 0)
1172 tios.c_cflag &= ~CRTSCTS;
1174 if (crtscts != 0 && !termiox_ok) {
1175 error("Can't set RTS/CTS flow control");
1176 } else if (crtscts > 0) {
1177 tiox.x_hflag |= RTSXOFF|CTSXON;
1178 } else if (crtscts < 0) {
1179 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
1183 tios.c_cflag |= CS8 | CREAD | HUPCL;
1184 if (local || !modem)
1185 tios.c_cflag |= CLOCAL;
1186 tios.c_iflag = IGNBRK | IGNPAR;
1189 tios.c_cc[VMIN] = 1;
1190 tios.c_cc[VTIME] = 0;
1192 if (crtscts == -2) {
1193 tios.c_iflag |= IXON | IXOFF;
1194 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
1195 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
1198 speed = translate_speed(inspeed);
1200 cfsetospeed(&tios, speed);
1201 cfsetispeed(&tios, speed);
1203 speed = cfgetospeed(&tios);
1205 * We can't proceed if the serial port speed is 0,
1206 * since that implies that the serial port is disabled.
1208 if ((speed == B0) && !sync_serial)
1209 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1212 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1213 fatal("tcsetattr: %m");
1216 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1217 error("TCSETXF: %m");
1221 baud_rate = inspeed = baud_rate_of(speed);
1227 * restore_tty - restore the terminal to the saved settings.
1234 if (!default_device) {
1236 * Turn off echoing, because otherwise we can get into
1237 * a loop with the tty and the modem echoing to each other.
1238 * We presume we are the sole user of this tty device, so
1239 * when we close it, it will revert to its defaults anyway.
1241 inittermios.c_lflag &= ~(ECHO | ECHONL);
1243 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1244 if (!hungup && errno != ENXIO)
1245 warn("tcsetattr: %m");
1247 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1248 if (!hungup && errno != ENXIO)
1249 error("TCSETXF: %m");
1253 ioctl(fd, TIOCSWINSZ, &wsinfo);
1259 * setdtr - control the DTR line on the serial port.
1260 * This is called from die(), so it shouldn't call die().
1266 int modembits = TIOCM_DTR;
1268 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1272 * open_loopback - open the device we use for getting packets
1273 * in demand mode. Under Solaris 2, we use our existing fd
1274 * to the ppp driver.
1283 * output - Output PPP packet.
1286 output(unit, p, len)
1295 dump_packet("sent", p, len);
1296 if (snoop_send_hook) snoop_send_hook(p, len);
1299 data.buf = (caddr_t) p;
1301 while (putmsg(pppfd, NULL, &data, 0) < 0) {
1302 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1304 error("Couldn't send packet: %m");
1308 pfd.events = POLLOUT;
1309 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
1315 * wait_input - wait until there is data available,
1316 * for the length of time specified by *timo (indefinite
1321 struct timeval *timo;
1325 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1326 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1331 * add_fd - add an fd to the set that wait_input waits for.
1338 for (n = 0; n < n_pollfds; ++n)
1339 if (pollfds[n].fd == fd)
1341 if (n_pollfds < MAX_POLLFDS) {
1342 pollfds[n_pollfds].fd = fd;
1343 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1346 error("Too many inputs!");
1350 * remove_fd - remove an fd from the set that wait_input waits for.
1357 for (n = 0; n < n_pollfds; ++n) {
1358 if (pollfds[n].fd == fd) {
1359 while (++n < n_pollfds)
1360 pollfds[n-1] = pollfds[n];
1369 * wait_loop_output - wait until there is data available on the
1370 * loopback, for the length of time specified by *timo (indefinite
1374 wait_loop_output(timo)
1375 struct timeval *timo;
1381 * wait_time - wait for a given length of time or until a
1382 * signal is received.
1386 struct timeval *timo;
1390 n = select(0, NULL, NULL, NULL, timo);
1391 if (n < 0 && errno != EINTR)
1392 fatal("select: %m");
1398 * read_packet - get a PPP packet from the serial device.
1404 struct strbuf ctrl, data;
1406 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1409 data.maxlen = PPP_MRU + PPP_HDRLEN;
1410 data.buf = (caddr_t) buf;
1411 ctrl.maxlen = sizeof(ctrlbuf);
1412 ctrl.buf = (caddr_t) ctrlbuf;
1414 len = getmsg(pppfd, &ctrl, &data, &flags);
1416 if (errno == EAGAIN || errno == EINTR)
1418 fatal("Error reading packet: %m");
1425 * Got a M_PROTO or M_PCPROTO message. Interpret it
1426 * as a DLPI primitive??
1429 dbglog("got dlpi prim 0x%x, len=%d",
1430 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1436 * get_loop_output - get outgoing packets from the ppp device,
1437 * and detect when we want to bring the real link up.
1438 * Return value is 1 if we need to bring up the link, 0 otherwise.
1446 while ((len = read_packet(inpacket_buf)) > 0) {
1447 if (loop_frame(inpacket_buf, len))
1454 * netif_set_mtu - set the MTU on the PPP network interface.
1457 netif_set_mtu(unit, mtu)
1461 #if defined(INET6) && defined(SOL2)
1464 #endif /* defined(INET6) && defined(SOL2) */
1466 memset(&ifr, 0, sizeof(ifr));
1467 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1468 ifr.ifr_metric = link_mtu;
1469 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1470 error("Couldn't set IP MTU (%s): %m", ifr.ifr_name);
1473 #if defined(INET6) && defined(SOL2)
1474 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1476 error("Couldn't open IPv6 socket: %m");
1478 memset(&lifr, 0, sizeof(lifr));
1479 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1480 lifr.lifr_mtu = link_mtu;
1481 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1483 error("Couldn't set IPv6 MTU (%s): %m", ifr.ifr_name);
1486 #endif /* defined(INET6) && defined(SOL2) */
1490 * tty_send_config - configure the transmit characteristics of
1491 * the ppp interface.
1494 tty_send_config(mtu, asyncmap, pcomp, accomp)
1502 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1503 if (hungup && errno == ENXIO)
1505 error("Couldn't set MTU: %m");
1509 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1510 error("Couldn't set transmit ACCM: %m");
1513 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1514 cf[1] = COMP_PROT | COMP_AC;
1515 if (any_compressions() &&
1516 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1517 error("Couldn't set prot/AC compression: %m");
1523 * tty_set_xaccm - set the extended transmit ACCM for the interface.
1533 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1534 if (!hungup || errno != ENXIO)
1535 warn("Couldn't set extended ACCM: %m");
1540 * tty_recv_config - configure the receive-side characteristics of
1541 * the ppp interface.
1544 tty_recv_config(mru, asyncmap, pcomp, accomp)
1552 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1553 if (hungup && errno == ENXIO)
1555 error("Couldn't set MRU: %m");
1559 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1560 error("Couldn't set receive ACCM: %m");
1563 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1564 cf[1] = DECOMP_PROT | DECOMP_AC;
1565 if (any_compressions() &&
1566 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1567 error("Couldn't set prot/AC decompression: %m");
1573 * ccp_test - ask kernel whether a given compression method
1574 * is acceptable for use.
1577 ccp_test(unit, opt_ptr, opt_len, for_transmit)
1578 int unit, opt_len, for_transmit;
1581 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1582 opt_ptr, opt_len, 0) >= 0)
1584 return (errno == ENOSR)? 0: -1;
1588 * ccp_flags_set - inform kernel about the current state of CCP.
1591 ccp_flags_set(unit, isopen, isup)
1592 int unit, isopen, isup;
1596 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1597 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1598 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1599 if (!hungup || errno != ENXIO)
1600 error("Couldn't set kernel CCP state: %m");
1605 * get_idle_time - return how long the link has been idle.
1608 get_idle_time(u, ip)
1610 struct ppp_idle *ip;
1612 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1616 * get_ppp_stats - return statistics for the link.
1619 get_ppp_stats(u, stats)
1621 struct pppd_stats *stats;
1626 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1627 error("Couldn't get link statistics: %m");
1630 stats->bytes_in = s.p.ppp_ibytes;
1631 stats->bytes_out = s.p.ppp_obytes;
1632 stats->pkts_in = s.p.ppp_ipackets;
1633 stats->pkts_out = s.p.ppp_opackets;
1639 * set_filters - transfer the pass and active filters to the kernel.
1642 set_filters(pass, active)
1643 struct bpf_program *pass, *active;
1647 if (pass->bf_len > 0) {
1648 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1649 sizeof(struct bpf_program), 0) < 0) {
1650 error("Couldn't set pass-filter in kernel: %m");
1654 if (active->bf_len > 0) {
1655 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1656 sizeof(struct bpf_program), 0) < 0) {
1657 error("Couldn't set active-filter in kernel: %m");
1666 * ccp_fatal_error - returns 1 if decompression was disabled as a
1667 * result of an error detected after decompression of a packet,
1668 * 0 otherwise. This is necessary because of patent nonsense.
1671 ccp_fatal_error(unit)
1677 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1678 if (errno != ENXIO && errno != EINVAL)
1679 error("Couldn't get compression flags: %m");
1682 return cf[0] & CCP_FATALERROR;
1686 * sifvjcomp - config tcp header compression
1689 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1690 int u, vjcomp, xcidcomp, xmaxcid;
1696 maxcid[0] = xcidcomp;
1697 maxcid[1] = 15; /* XXX should be rmaxcid */
1698 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1699 error("Couldn't initialize VJ compression: %m");
1703 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1704 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1705 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1706 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1708 error("Couldn't enable VJ compression: %m");
1715 * sifup - Config the interface up and enable IP packets to pass.
1723 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1724 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1725 error("Couldn't mark interface up (get): %m");
1728 ifr.ifr_flags |= IFF_UP;
1729 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1730 error("Couldn't mark interface up (set): %m");
1738 * sifdown - Config the interface down and disable IP.
1748 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1749 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1750 error("Couldn't mark interface down (get): %m");
1753 ifr.ifr_flags &= ~IFF_UP;
1754 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1755 error("Couldn't mark interface down (set): %m");
1763 * sifnpmode - Set the mode for handling packets for a given NP.
1766 sifnpmode(u, proto, mode)
1774 npi[1] = (int) mode;
1775 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1776 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1782 #if defined(SOL2) && defined(INET6)
1784 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1793 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1798 memset(&lifr, 0, sizeof(lifr));
1799 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1800 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1805 lifr.lifr_flags |= IFF_UP;
1806 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1807 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1818 * sifdown - Config the IPv6 interface down and disable IPv6.
1827 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1831 memset(&lifr, 0, sizeof(lifr));
1832 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1833 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1838 lifr.lifr_flags &= ~IFF_UP;
1839 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1840 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1851 * sif6addr - Config the interface with an IPv6 link-local address
1859 struct sockaddr_storage laddr;
1860 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1863 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1867 memset(&lifr, 0, sizeof(lifr));
1868 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1871 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1872 * zero values, hence the interface token came to be zero too,
1873 * and without this, in.ndpd will complain
1875 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1876 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1882 * Set the interface address and destination address
1884 IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1885 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1890 memset(&lifr, 0, sizeof(lifr));
1891 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1892 IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1893 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1902 * cif6addr - Remove the IPv6 address from interface
1912 #endif /* defined(SOL2) && defined(INET6) */
1915 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1918 * sifaddr - Config the interface IP addresses and netmask.
1928 memset(&ifr, 0, sizeof(ifr));
1929 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1930 ifr.ifr_addr.sa_family = AF_INET;
1931 INET_ADDR(ifr.ifr_addr) = m;
1932 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1933 error("Couldn't set IP netmask: %m");
1936 ifr.ifr_addr.sa_family = AF_INET;
1937 INET_ADDR(ifr.ifr_addr) = o;
1938 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1939 error("Couldn't set local IP address: %m");
1944 * On some systems, we have to explicitly set the point-to-point
1945 * flag bit before we can set a destination address.
1947 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1948 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1949 ifr.ifr_flags |= IFF_POINTOPOINT;
1950 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1951 error("Couldn't mark interface pt-to-pt: %m");
1955 ifr.ifr_dstaddr.sa_family = AF_INET;
1956 INET_ADDR(ifr.ifr_dstaddr) = h;
1957 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1958 error("Couldn't set remote IP address: %m");
1967 * cifaddr - Clear the interface IP addresses, and delete routes
1968 * through the interface if possible.
1975 #if defined(__USLC__) /* was: #if 0 */
1976 cifroute(unit, ouraddr, hisaddr);
1978 notice("Removing ppp interface unit");
1979 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1980 error("Can't remove ppp interface unit: %m");
1991 * sifdefaultroute - assign a default route through the address given.
1994 sifdefaultroute(u, l, g)
2000 #if defined(__USLC__)
2001 g = l; /* use the local address as gateway */
2003 memset(&rt, 0, sizeof(rt));
2004 rt.rt_dst.sa_family = AF_INET;
2005 INET_ADDR(rt.rt_dst) = 0;
2006 rt.rt_gateway.sa_family = AF_INET;
2007 INET_ADDR(rt.rt_gateway) = g;
2008 rt.rt_flags = RTF_GATEWAY;
2010 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
2011 error("Can't add default route: %m");
2015 default_route_gateway = g;
2020 * cifdefaultroute - delete a default route through the address given.
2023 cifdefaultroute(u, l, g)
2029 #if defined(__USLC__)
2030 g = l; /* use the local address as gateway */
2032 memset(&rt, 0, sizeof(rt));
2033 rt.rt_dst.sa_family = AF_INET;
2034 INET_ADDR(rt.rt_dst) = 0;
2035 rt.rt_gateway.sa_family = AF_INET;
2036 INET_ADDR(rt.rt_gateway) = g;
2037 rt.rt_flags = RTF_GATEWAY;
2039 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2040 error("Can't delete default route: %m");
2044 default_route_gateway = 0;
2049 * sifproxyarp - Make a proxy ARP entry for the peer.
2052 sifproxyarp(unit, hisaddr)
2056 struct arpreq arpreq;
2058 memset(&arpreq, 0, sizeof(arpreq));
2059 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
2062 arpreq.arp_pa.sa_family = AF_INET;
2063 INET_ADDR(arpreq.arp_pa) = hisaddr;
2064 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
2065 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
2066 error("Couldn't set proxy ARP entry: %m");
2070 proxy_arp_addr = hisaddr;
2075 * cifproxyarp - Delete the proxy ARP entry for the peer.
2078 cifproxyarp(unit, hisaddr)
2082 struct arpreq arpreq;
2084 memset(&arpreq, 0, sizeof(arpreq));
2085 arpreq.arp_pa.sa_family = AF_INET;
2086 INET_ADDR(arpreq.arp_pa) = hisaddr;
2087 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
2088 error("Couldn't delete proxy ARP entry: %m");
2097 * get_ether_addr - get the hardware address of an interface on the
2098 * the same subnet as ipaddr.
2103 get_ether_addr(ipaddr, hwaddr)
2105 struct sockaddr *hwaddr;
2107 struct ifreq *ifr, *ifend, ifreq;
2110 u_int32_t ina, mask;
2113 * Scan through the system's network interfaces.
2116 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2119 ifc.ifc_len = nif * sizeof(struct ifreq);
2120 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2121 if (ifc.ifc_buf == 0)
2123 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2124 warn("Couldn't get system interface list: %m");
2128 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2129 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2130 if (ifr->ifr_addr.sa_family != AF_INET)
2133 * Check that the interface is up, and not point-to-point or loopback.
2135 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2136 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2138 if ((ifreq.ifr_flags &
2139 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
2140 != (IFF_UP|IFF_BROADCAST))
2143 * Get its netmask and check that it's on the right subnet.
2145 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2147 ina = INET_ADDR(ifr->ifr_addr);
2148 mask = INET_ADDR(ifreq.ifr_addr);
2149 if ((ipaddr & mask) == (ina & mask))
2154 warn("No suitable interface found for proxy ARP");
2159 info("found interface %s for proxy ARP", ifr->ifr_name);
2160 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2161 error("Couldn't get hardware address for %s", ifr->ifr_name);
2171 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2174 get_hw_addr_dlpi(name, hwaddr)
2176 struct sockaddr *hwaddr;
2179 int unit, iffd, adrlen;
2180 unsigned char *adrp;
2183 union DL_primitives prim;
2188 * We have to open the device and ask it for its hardware address.
2189 * First split apart the device name and unit.
2191 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2192 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2199 * Open the device and do a DLPI attach and phys_addr_req.
2201 iffd = open(ifdev, O_RDWR);
2203 error("Can't open %s: %m", ifdev);
2206 if (dlpi_attach(iffd, unit) < 0
2207 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2208 || dlpi_info_req(iffd) < 0
2209 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2214 adrlen = reply.prim.info_ack.dl_addr_length;
2215 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2217 #if DL_CURRENT_VERSION >= 2
2218 if (reply.prim.info_ack.dl_sap_length < 0)
2219 adrlen += reply.prim.info_ack.dl_sap_length;
2221 adrp += reply.prim.info_ack.dl_sap_length;
2224 hwaddr->sa_family = AF_UNSPEC;
2225 memcpy(hwaddr->sa_data, adrp, adrlen);
2230 * get_hw_addr - obtain the hardware address for a named interface.
2233 get_hw_addr(name, ina, hwaddr)
2236 struct sockaddr *hwaddr;
2238 /* New way - get the address by doing an arp request. */
2242 s = socket(AF_INET, SOCK_DGRAM, 0);
2245 memset(&req, 0, sizeof(req));
2246 req.arp_pa.sa_family = AF_INET;
2247 INET_ADDR(req.arp_pa) = ina;
2248 if (ioctl(s, SIOCGARP, &req) < 0) {
2249 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2252 *hwaddr = req.arp_ha;
2253 hwaddr->sa_family = AF_UNSPEC;
2259 dlpi_attach(fd, ppa)
2262 dl_attach_req_t req;
2265 req.dl_primitive = DL_ATTACH_REQ;
2267 buf.len = sizeof(req);
2268 buf.buf = (void *) &req;
2269 return putmsg(fd, &buf, NULL, RS_HIPRI);
2279 req.dl_primitive = DL_INFO_REQ;
2280 buf.len = sizeof(req);
2281 buf.buf = (void *) &req;
2282 return putmsg(fd, &buf, NULL, RS_HIPRI);
2286 dlpi_get_reply(fd, reply, expected_prim, maxlen)
2287 union DL_primitives *reply;
2288 int fd, expected_prim, maxlen;
2295 * Use poll to wait for a message with a timeout.
2298 pfd.events = POLLIN | POLLPRI;
2300 n = poll(&pfd, 1, 1000);
2301 } while (n == -1 && errno == EINTR);
2308 buf.maxlen = maxlen;
2309 buf.buf = (void *) reply;
2311 if (getmsg(fd, &buf, NULL, &flags) < 0)
2314 if (buf.len < sizeof(ulong)) {
2316 dbglog("dlpi response short (len=%d)\n", buf.len);
2320 if (reply->dl_primitive == expected_prim)
2324 if (reply->dl_primitive == DL_ERROR_ACK) {
2325 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2326 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2327 reply->error_ack.dl_error_primitive);
2329 dbglog("dlpi unexpected response prim %x\n",
2330 reply->dl_primitive);
2338 * Return user specified netmask, modified by any mask we might determine
2339 * for address `addr' (in network byte order).
2340 * Here we scan through the system's list of interfaces, looking for
2341 * any non-point-to-point interfaces which might appear to be on the same
2342 * network as `addr'. If we find any, we OR in their netmask to the
2343 * user-specified netmask.
2349 u_int32_t mask, nmask, ina;
2350 struct ifreq *ifr, *ifend, ifreq;
2355 if (IN_CLASSA(addr)) /* determine network mask for address class */
2356 nmask = IN_CLASSA_NET;
2357 else if (IN_CLASSB(addr))
2358 nmask = IN_CLASSB_NET;
2360 nmask = IN_CLASSC_NET;
2361 /* class D nets are disallowed by bad_ip_adrs */
2362 mask = netmask | htonl(nmask);
2365 * Scan through the system's network interfaces.
2368 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2371 ifc.ifc_len = nif * sizeof(struct ifreq);
2372 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2373 if (ifc.ifc_buf == 0)
2375 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2376 warn("Couldn't get system interface list: %m");
2380 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2381 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2383 * Check the interface's internet address.
2385 if (ifr->ifr_addr.sa_family != AF_INET)
2387 ina = INET_ADDR(ifr->ifr_addr);
2388 if ((ntohl(ina) & nmask) != (addr & nmask))
2391 * Check that the interface is up, and not point-to-point or loopback.
2393 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2394 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2396 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2400 * Get its netmask and OR it into our mask.
2402 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2404 mask |= INET_ADDR(ifreq.ifr_addr);
2412 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2415 logwtmp(line, name, host)
2416 const char *line, *name, *host;
2418 static struct utmpx utmpx;
2422 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2423 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
2424 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2425 utmpx.ut_pid = getpid();
2426 utmpx.ut_type = USER_PROCESS;
2428 utmpx.ut_type = DEAD_PROCESS;
2430 gettimeofday(&utmpx.ut_tv, NULL);
2431 updwtmpx("/var/adm/wtmpx", &utmpx);
2435 * get_host_seed - return the serial number of this machine.
2442 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2443 error("sysinfo: %m");
2446 return (int) strtoul(buf, NULL, 16);
2450 strioctl(fd, cmd, ptr, ilen, olen)
2451 int fd, cmd, ilen, olen;
2454 struct strioctl str;
2460 if (ioctl(fd, I_STR, &str) == -1)
2462 if (str.ic_len != olen)
2463 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2464 olen, str.ic_len, cmd);
2470 * lock - create a lock file for the named lock device
2473 #define LOCK_PREFIX "/var/spool/locks/LK."
2474 static char lock_file[40]; /* name of lock file created */
2484 if (stat(dev, &sbuf) < 0) {
2485 error("Can't get device number for %s: %m", dev);
2488 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2489 error("Can't lock %s: not a character device", dev);
2492 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2493 LOCK_PREFIX, major(sbuf.st_dev),
2494 major(sbuf.st_rdev), minor(sbuf.st_rdev));
2496 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2498 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2499 /* Read the lock file to find out who has the device locked */
2500 n = read(fd, ascii_pid, 11);
2502 error("Can't read pid from lock file %s", lock_file);
2506 pid = atoi(ascii_pid);
2507 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2508 /* pid no longer exists - remove the lock file */
2509 if (unlink(lock_file) == 0) {
2511 notice("Removed stale lock on %s (pid %d)",
2515 warn("Couldn't remove stale lock on %s",
2518 notice("Device %s is locked by pid %d",
2523 error("Can't create lock file %s: %m", lock_file);
2528 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2529 write(fd, ascii_pid, 11);
2536 * unlock - remove our lockfile
2549 * cifroute - delete a route through the addresses given.
2552 cifroute(u, our, his)
2558 memset(&rt, 0, sizeof(rt));
2559 rt.rt_dst.sa_family = AF_INET;
2560 INET_ADDR(rt.rt_dst) = his;
2561 rt.rt_gateway.sa_family = AF_INET;
2562 INET_ADDR(rt.rt_gateway) = our;
2563 rt.rt_flags = RTF_HOST;
2565 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2566 error("Can't delete route: %m");
2574 * have_route_to - determine if the system has a route to the specified
2575 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
2576 * `addr' is in network byte order.
2577 * For demand mode to work properly, we have to ignore routes
2578 * through our own interface.
2580 #ifndef T_CURRENT /* needed for Solaris 2.5 */
2581 #define T_CURRENT MI_T_CURRENT
2589 int fd, r, flags, i;
2591 struct T_optmgmt_req req;
2595 struct T_optmgmt_ack ack;
2596 unsigned char space[64];
2599 struct strbuf cbuf, dbuf;
2601 mib2_ipRouteEntry_t routes[8];
2602 mib2_ipRouteEntry_t *rp;
2604 fd = open(mux_dev_name, O_RDWR);
2606 warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2610 req.req.PRIM_type = T_OPTMGMT_REQ;
2611 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2612 req.req.OPT_length = sizeof(req.hdr);
2613 req.req.MGMT_flags = T_CURRENT;
2615 req.hdr.level = MIB2_IP;
2619 cbuf.buf = (char *) &req;
2620 cbuf.len = sizeof(req);
2622 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2623 warn("have_route_to: putmsg: %m");
2629 cbuf.buf = (char *) &ack;
2630 cbuf.maxlen = sizeof(ack);
2631 dbuf.buf = (char *) routes;
2632 dbuf.maxlen = sizeof(routes);
2634 r = getmsg(fd, &cbuf, &dbuf, &flags);
2636 warn("have_route_to: getmsg: %m");
2641 if (cbuf.len < sizeof(struct T_optmgmt_ack)
2642 || ack.ack.PRIM_type != T_OPTMGMT_ACK
2643 || ack.ack.MGMT_flags != T_SUCCESS
2644 || ack.ack.OPT_length < sizeof(struct opthdr)) {
2645 dbglog("have_route_to: bad message len=%d prim=%d",
2646 cbuf.len, ack.ack.PRIM_type);
2651 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2652 if (rh->level == 0 && rh->name == 0)
2654 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2655 while (r == MOREDATA)
2656 r = getmsg(fd, NULL, &dbuf, &flags);
2661 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2662 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2663 if (rp->ipRouteMask != ~0) {
2664 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2665 rp->ipRouteDest, rp->ipRouteNextHop,
2667 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2668 && rp->ipRouteNextHop != remote_addr)
2674 r = getmsg(fd, NULL, &dbuf, &flags);
2685 * get_pty - get a pty master/slave pair and chown the slave side to
2686 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
2689 get_pty(master_fdp, slave_fdp, slave_name, uid)
2697 struct termios tios;
2699 mfd = open("/dev/ptmx", O_RDWR);
2701 error("Couldn't open pty master: %m");
2705 pty_name = ptsname(mfd);
2706 if (pty_name == NULL) {
2707 error("Couldn't get name of pty slave");
2711 if (chown(pty_name, uid, -1) < 0)
2712 warn("Couldn't change owner of pty slave: %m");
2713 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2714 warn("Couldn't change permissions on pty slave: %m");
2715 if (unlockpt(mfd) < 0)
2716 warn("Couldn't unlock pty slave: %m");
2718 sfd = open(pty_name, O_RDWR);
2720 error("Couldn't open pty slave %s: %m", pty_name);
2724 if (ioctl(sfd, I_PUSH, "ptem") < 0)
2725 warn("Couldn't push ptem module on pty slave: %m");
2727 dbglog("Using %s", pty_name);
2728 strlcpy(slave_name, pty_name, MAXPATHLEN);