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-svr4.c,v 1.42 2000/04/06 23:11:05 masputra 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_DEV_NAME)
93 #define PPP_DEV_NAME "/dev/ppp"
94 #endif /* !defined(PPP_DEV_NAME) */
96 #if !defined(AHDLC_MOD_NAME)
97 #define AHDLC_MOD_NAME "ppp_ahdl"
98 #endif /* !defined(AHDLC_MOD_NAME) */
100 #if !defined(COMP_MOD_NAME)
101 #define COMP_MOD_NAME "ppp_comp"
102 #endif /* !defined(COMP_MOD_NAME) */
104 #if !defined(IP_DEV_NAME)
105 #define IP_DEV_NAME "/dev/ip"
106 #endif /* !defined(IP_DEV_NAME) */
108 #if !defined(IP_MOD_NAME)
109 #define IP_MOD_NAME "ip"
110 #endif /* !defined(IP_MOD_NAME) */
112 #if !defined(UDP_DEV_NAME) && defined(SOL2)
113 #define UDP_DEV_NAME "/dev/udp"
114 #endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */
116 #if !defined(UDP6_DEV_NAME) && defined(SOL2)
117 #define UDP6_DEV_NAME "/dev/udp6"
118 #endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */
120 static const char rcsid[] = RCSID;
124 * "/dev/udp" is used as a multiplexor to PLINK the interface stream
125 * under. It is used in place of "/dev/ip" since STREAMS will not let
126 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the
127 * driver at the bottom of the tunneling interfaces stream.
129 static char *mux_dev_name = UDP_DEV_NAME;
131 static char *mux_dev_name = IP_DEV_NAME;
134 static int fdmuxid = -1;
136 static int ipmuxid = -1;
138 #if defined(INET6) && defined(SOL2)
139 static int ip6fd; /* IP file descriptor */
140 static int ip6muxid = -1; /* Multiplexer file descriptor */
141 static int if6_is_up = 0; /* IPv6 interface has been marked up */
143 #define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \
144 s->sin6_addr.s6_addr32[0] = htonl(as); \
145 eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \
146 s->sin6_family = AF_INET6; \
147 l.lifr_addr.ss_family = AF_INET6; \
148 l.lifr_addrlen = 10; \
149 l.lifr_addr = laddr; \
152 #define IN6_LLADDR_FROM_EUI64(l, s, eui64) \
153 _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000)
155 #define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \
156 _IN6_LLX_FROM_EUI64(l, s, eui64, 0)
158 #endif /* defined(INET6) && defined(SOL2) */
160 #if defined(INET6) && defined(SOL2)
161 static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */
163 static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */
164 #define MAXIFS 256 /* Max # of interfaces */
165 #endif /* defined(INET6) && defined(SOL2) */
167 static int restore_term;
168 static struct termios inittermios;
170 static struct termiox inittermiox;
171 static int termiox_ok;
173 static struct winsize wsinfo; /* Initial window size info */
174 static pid_t tty_sid; /* original session ID for terminal */
176 extern u_char inpacket_buf[]; /* borrowed from main.c */
178 #define MAX_POLLFDS 32
179 static struct pollfd pollfds[MAX_POLLFDS];
180 static int n_pollfds;
182 static int link_mtu, link_mru;
185 static int tty_nmodules;
186 static char tty_modules[NMODULES][FMNAMESZ+1];
187 static int tty_npushed;
189 static int if_is_up; /* Interface has been marked up */
190 static u_int32_t remote_addr; /* IP address of peer */
191 static u_int32_t default_route_gateway; /* Gateway for default route added */
192 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
194 /* Prototypes for procedures local to this file. */
195 static int translate_speed __P((int));
196 static int baud_rate_of __P((int));
197 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
198 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
199 static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
200 static int dlpi_attach __P((int, int));
201 static int dlpi_info_req __P((int));
202 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
203 static int strioctl __P((int, int, void *, int, int));
207 * sifppa - Sets interface ppa
209 * without setting the ppa, ip module will return EINVAL upon setting the
210 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects
211 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before
212 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to
213 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving
214 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa
215 * is required because the ppp DLPI provider advertises itself as
216 * a DLPI style 2 type, which requires a point of attachment to be
217 * specified. The only way the user can specify a point of attachment
218 * is via SIOCSLIFNAME or IF_UNITSEL.
220 * Such changes in the behavior of ip module was made to meet new or
221 * evolving standards requirements.
229 return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa);
233 #if defined(SOL2) && defined(INET6)
235 * get_first_ethernet - returns the first Ethernet interface name found in
236 * the system, or NULL if none is found
238 * NOTE: This is the lifreq version (Solaris 8 and above)
245 struct lifreq *plifreq;
247 int fd, num_ifs, i, found;
251 fd = socket(AF_INET, SOCK_DGRAM, 0);
257 * Find out how many interfaces are running
259 lifn.lifn_family = AF_UNSPEC;
260 lifn.lifn_flags = LIFC_NOXMIT;
261 if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) {
263 error("could not determine number of interfaces: %m");
267 num_ifs = lifn.lifn_count;
268 req_size = num_ifs * sizeof(struct lifreq);
269 req = malloc(req_size);
272 error("out of memory");
277 * Get interface configuration info for all interfaces
279 lifc.lifc_family = AF_UNSPEC;
280 lifc.lifc_flags = LIFC_NOXMIT;
281 lifc.lifc_len = req_size;
283 if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) {
286 error("SIOCGLIFCONF: %m");
291 * And traverse each interface to look specifically for the first
292 * occurence of an Ethernet interface which has been marked up
294 plifreq = lifc.lifc_req;
296 for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) {
298 if (strchr(plifreq->lifr_name, ':') != NULL)
301 memset(&lifr, 0, sizeof(lifr));
302 strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name));
303 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
306 error("SIOCGLIFFLAGS: %m");
309 fl = lifr.lifr_flags;
311 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
312 != (IFF_UP | IFF_BROADCAST))
322 strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name));
323 return (char *)first_ether_name;
329 * get_first_ethernet - returns the first Ethernet interface name found in
330 * the system, or NULL if none is found
332 * NOTE: This is the ifreq version (before Solaris 8).
338 struct ifreq *pifreq;
340 int fd, num_ifs, i, found;
344 fd = socket(AF_INET, SOCK_DGRAM, 0);
350 * Find out how many interfaces are running
352 if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) {
356 req_size = num_ifs * sizeof(struct ifreq);
357 req = malloc(req_size);
360 error("out of memory");
365 * Get interface configuration info for all interfaces
367 ifc.ifc_len = req_size;
369 if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) {
372 error("SIOCGIFCONF: %m");
377 * And traverse each interface to look specifically for the first
378 * occurence of an Ethernet interface which has been marked up
380 pifreq = ifc.ifc_req;
382 for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) {
384 if (strchr(pifreq->ifr_name, ':') != NULL)
387 memset(&ifr, 0, sizeof(ifr));
388 strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name));
389 if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
392 error("SIOCGIFFLAGS: %m");
397 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
398 != (IFF_UP | IFF_BROADCAST))
408 strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name));
409 return (char *)first_ether_name;
413 #endif /* defined(SOL2) && defined(INET6) */
417 * get_if_hwaddr - get the hardware address for the specified
418 * network interface device.
421 get_if_hwaddr(u_char *addr, char *if_name)
423 struct sockaddr s_eth_addr;
424 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
430 * Send DL_INFO_REQ to the driver to solicit its MAC address
432 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
433 error("could not obtain hardware address for %s", if_name);
437 memcpy(addr, eth_addr->ether_addr_octet, 6);
442 #if defined(SOL2) && defined(INET6)
444 * slifname - Sets interface ppa and flags
446 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must
447 * be set in order to declare this as an IPv6 interface
457 memset(&lifr, 0, sizeof(lifr));
458 ret = ioctl(fd, SIOCGLIFFLAGS, &lifr);
462 lifr.lifr_flags |= IFF_IPV6;
463 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4);
465 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
467 ret = ioctl(fd, SIOCSLIFNAME, &lifr);
477 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
479 * walks the list of valid ethernet interfaces, and convert the first
480 * found 48-bit MAC address into EUI 64. caller also assumes that
481 * the system has a properly configured Ethernet interface for this
482 * function to return non-zero.
485 ether_to_eui64(eui64_t *p_eui64)
487 struct sockaddr s_eth_addr;
488 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
491 if ((if_name = get_first_ethernet()) == NULL) {
492 error("no persistent id can be found");
497 * Send DL_INFO_REQ to the driver to solicit its MAC address
499 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
500 error("could not obtain hardware address for %s", if_name);
505 * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
507 p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02;
508 p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF);
509 p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF);
510 p_eui64->e8[3] = 0xFF;
511 p_eui64->e8[4] = 0xFE;
512 p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF);
513 p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF);
514 p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF);
518 #endif /* defined(SOL2) && defined(INET6) */
521 * sys_init - System-dependent initialization.
528 #if defined(INET6) && defined(SOL2)
531 #endif /* defined(INET6) && defined(SOL2) */
534 union DL_primitives prim;
537 #endif /* !defined(SOL2) */
539 ipfd = open(mux_dev_name, O_RDWR, 0);
541 fatal("Couldn't open IP device: %m");
543 #if defined(INET6) && defined(SOL2)
544 ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0);
546 fatal("Couldn't open IP device (2): %m");
547 #endif /* defined(INET6) && defined(SOL2) */
549 if (default_device && !notty)
550 tty_sid = getsid((pid_t)0);
552 pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0);
554 fatal("Can't open %s: %m", PPP_DEV_NAME);
555 if (kdebugflag & 1) {
556 x = PPPDBG_LOG + PPPDBG_DRIVER;
557 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
560 /* Assign a new PPA and get its unit number. */
561 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
562 fatal("Can't create new PPP interface: %m");
566 * Since sys_init() is called prior to ifname being set in main(),
567 * we need to get the ifname now, otherwise slifname(), and others,
568 * will fail, or maybe, I should move them to a later point ?
569 * <adi.masputra@sun.com>
571 sprintf(ifname, "ppp%d", ifunit);
572 #endif /* defined(SOL2) */
574 * Open the ppp device again and link it under the ip multiplexor.
575 * IP will assign a unit number which hopefully is the same as ifunit.
576 * I don't know any way to be certain they will be the same. :-(
578 ifd = open(PPP_DEV_NAME, O_RDWR, 0);
580 fatal("Can't open %s (2): %m", PPP_DEV_NAME);
581 if (kdebugflag & 1) {
582 x = PPPDBG_LOG + PPPDBG_DRIVER;
583 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
586 #if defined(INET6) && defined(SOL2)
587 i6fd = open(PPP_DEV_NAME, O_RDWR, 0);
590 fatal("Can't open %s (3): %m", PPP_DEV_NAME);
592 if (kdebugflag & 1) {
593 x = PPPDBG_LOG + PPPDBG_DRIVER;
594 strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0);
596 #endif /* defined(INET6) && defined(SOL2) */
599 if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) {
603 #endif /* defined(INET6) */
604 fatal("Can't push IP module: %m");
608 * Assign ppa according to the unit number returned by ppp device
609 * after plumbing is completed above.
611 if (sifppa(ifd, ifunit) < 0) {
615 #endif /* defined(INET6) */
616 fatal("Can't set ppa for unit %d: %m", ifunit);
621 * An IPv6 interface is created anyway, even when the user does not
622 * explicitly enable it. Note that the interface will be marked
623 * IPv6 during slifname().
625 if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) {
628 fatal("Can't push IP module (2): %m");
632 * Assign ppa according to the unit number returned by ppp device
633 * after plumbing is completed above. In addition, mark the interface
634 * as an IPv6 interface.
636 if (slifname(i6fd, ifunit) < 0) {
639 fatal("Can't set ifname for unit %d: %m", ifunit);
641 #endif /* defined(INET6) */
643 ipmuxid = ioctl(ipfd, I_PLINK, ifd);
648 #endif /* defined(INET6) */
649 fatal("Can't I_PLINK PPP device to IP: %m");
652 memset(&ifr, 0, sizeof(ifr));
653 sprintf(ifr.ifr_name, "%s", ifname);
654 ifr.ifr_ip_muxid = ipmuxid;
657 * In Sol 8 and later, STREAMS dynamic module plumbing feature exists.
658 * This is so that an arbitrary module can be inserted, or deleted,
659 * between ip module and the device driver without tearing down the
660 * existing stream. Such feature requires the mux ids, which is set
661 * by SIOCSIFMUXID (or SIOCLSIFMUXID).
663 if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) {
664 ioctl(ipfd, I_PUNLINK, ipmuxid);
667 #endif /* defined(INET6) */
668 fatal("SIOCSIFMUXID: %m");
671 #else /* else if !defined(SOL2) */
673 if (dlpi_attach(ifd, ifunit) < 0 ||
674 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
676 fatal("Can't attach to ppp%d: %m", ifunit);
679 ipmuxid = ioctl(ipfd, I_LINK, ifd);
682 fatal("Can't link PPP device to IP: %m");
683 #endif /* defined(SOL2) */
685 #if defined(INET6) && defined(SOL2)
686 ip6muxid = ioctl(ip6fd, I_PLINK, i6fd);
689 ioctl(ipfd, I_PUNLINK, ipmuxid);
690 fatal("Can't I_PLINK PPP device to IP (2): %m");
693 memset(&lifr, 0, sizeof(lifr));
694 sprintf(lifr.lifr_name, "%s", ifname);
695 lifr.lifr_ip_muxid = ip6muxid;
698 * Let IP know of the mux id [see comment for SIOCSIFMUXID above]
700 if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) {
701 ioctl(ipfd, I_PUNLINK, ipmuxid);
702 ioctl(ip6fd, I_PUNLINK, ip6muxid);
703 fatal("Can't link PPP device to IP (2): %m");
705 #endif /* defined(INET6) && defined(SOL2) */
708 /* Set the interface name for the link. */
709 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "ppp%d", ifunit);
710 ifr.ifr_metric = ipmuxid;
711 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
712 fatal("Can't set interface name %s: %m", ifr.ifr_name);
713 #endif /* !defined(SOL2) */
719 * sys_cleanup - restore any system state we modified before exiting:
720 * mark the interface down, delete default route and/or proxy arp entry.
721 * This should call die() because it's called from die().
730 #endif /* defined(INET6) */
731 #endif /* defined(SOL2) */
733 #if defined(SOL2) && defined(INET6)
736 #endif /* defined(SOL2) && defined(INET6) */
739 if (default_route_gateway)
740 cifdefaultroute(0, default_route_gateway, default_route_gateway);
742 cifproxyarp(0, proxy_arp_addr);
745 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
746 * unlink and re-link the modules, causing the muxid to change.
748 memset(&ifr, 0, sizeof(ifr));
749 sprintf(ifr.ifr_name, "%s", ifname);
750 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
751 error("SIOCGIFFLAGS: %m");
755 if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) {
756 error("SIOCGIFMUXID: %m");
760 ipmuxid = ifr.ifr_ip_muxid;
762 if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) {
763 error("Can't I_PUNLINK PPP from IP: %m");
768 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
769 * unlink and re-link the modules, causing the muxid to change.
771 memset(&lifr, 0, sizeof(lifr));
772 sprintf(lifr.lifr_name, "%s", ifname);
773 if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) {
774 error("SIOCGLIFFLAGS: %m");
778 if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) {
779 error("SIOCGLIFMUXID: %m");
783 ip6muxid = lifr.lifr_ip_muxid;
785 if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) {
786 error("Can't I_PUNLINK PPP from IP (2): %m");
788 #endif /* defined(INET6) */
789 #endif /* defined(SOL2) */
793 * sys_close - Clean up in a child process before execing.
799 #if defined(INET6) && defined(SOL2)
801 #endif /* defined(INET6) && defined(SOL2) */
807 * sys_check_options - check the options that the user specified
817 * daemon - Detach us from controlling terminal session.
820 daemon(nochdir, noclose)
821 int nochdir, noclose;
825 if ((pid = fork()) < 0)
828 exit(0); /* parent dies */
833 fclose(stdin); /* don't need stdin, stdout, stderr */
842 * ppp_available - check whether the system has any ppp interfaces
849 return stat(PPP_DEV_NAME, &buf) >= 0;
853 * any_compressions - see if compression is enabled or not
855 * In the STREAMS implementation of kernel-portion pppd,
856 * the comp STREAMS module performs the ACFC, PFC, as well
857 * CCP and VJ compressions. However, if the user has explicitly
858 * declare to not enable them from the command line, there is
859 * no point of having the comp module be pushed on the stream.
864 if ((!lcp_wantoptions[0].neg_accompression) &&
865 (!lcp_wantoptions[0].neg_pcompression) &&
866 (!ccp_protent.enabled_flag) &&
867 (!ipcp_wantoptions[0].neg_vj)) {
874 * establish_ppp - Turn the serial port into a ppp interface.
882 /* Pop any existing modules off the tty stream. */
884 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
885 || strcmp(tty_modules[i], "ptem") == 0
886 || ioctl(fd, I_POP, 0) < 0)
890 /* Push the async hdlc module and the compressor module. */
894 if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) {
895 error("Couldn't push PPP Async HDLC module: %m");
900 if (kdebugflag & 4) {
901 i = PPPDBG_LOG + PPPDBG_AHDLC;
902 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
905 * There's no need to push comp module if we don't intend
906 * to compress anything
908 if (any_compressions()) {
909 if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0)
910 error("Couldn't push PPP compression module: %m");
915 if (kdebugflag & 2) {
917 if (any_compressions())
919 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
922 /* Link the serial port under the PPP multiplexor. */
923 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
924 error("Can't link tty to PPP mux: %m");
932 * restore_loop - reattach the ppp unit to the loopback.
933 * This doesn't need to do anything because disestablish_ppp does it.
941 * disestablish_ppp - Restore the serial port to normal operation.
942 * It attempts to reconstruct the stream with the previously popped
943 * modules. This shouldn't call die() because it's called from die().
952 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
954 error("Can't unlink tty from PPP mux: %m");
959 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
961 for (i = tty_nmodules - 1; i >= 0; --i)
962 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
963 error("Couldn't restore tty module %s: %m",
966 if (hungup && default_device && tty_sid > 0) {
968 * If we have received a hangup, we need to send a SIGHUP
969 * to the terminal's controlling process. The reason is
970 * that the original stream head for the terminal hasn't
971 * seen the M_HANGUP message (it went up through the ppp
972 * driver to the stream head for our fd to /dev/ppp).
974 kill(tty_sid, SIGHUP);
980 * Check whether the link seems not to be 8-bit clean.
988 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
993 s = "bit 7 set to 1";
996 s = "bit 7 set to 0";
1006 warn("Serial link is not 8-bit clean:");
1007 warn("All received characters had %s", s);
1012 * List of valid speeds.
1015 int speed_int, speed_val;
1084 { 115200, B115200 },
1087 { 153600, B153600 },
1090 { 230400, B230400 },
1093 { 307200, B307200 },
1096 { 460800, B460800 },
1102 * Translate from bits/second to a speed_t.
1105 translate_speed(bps)
1108 struct speed *speedp;
1112 for (speedp = speeds; speedp->speed_int; speedp++)
1113 if (bps == speedp->speed_int)
1114 return speedp->speed_val;
1115 warn("speed %d not supported", bps);
1120 * Translate from a speed_t to bits/second.
1126 struct speed *speedp;
1130 for (speedp = speeds; speedp->speed_int; speedp++)
1131 if (speed == speedp->speed_val)
1132 return speedp->speed_int;
1137 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
1138 * at the requested speed, etc. If `local' is true, set CLOCAL
1139 * regardless of whether the modem option was specified.
1142 set_up_tty(fd, local)
1146 struct termios tios;
1147 #if !defined (CRTSCTS)
1148 struct termiox tiox;
1151 if (!sync_serial && tcgetattr(fd, &tios) < 0)
1152 fatal("tcgetattr: %m");
1156 if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) {
1158 if (errno != ENOTTY)
1159 error("TCGETX: %m");
1163 if (!restore_term) {
1169 ioctl(fd, TIOCGWINSZ, &wsinfo);
1172 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
1175 tios.c_cflag |= CRTSCTS;
1176 else if (crtscts < 0)
1177 tios.c_cflag &= ~CRTSCTS;
1179 if (crtscts != 0 && !termiox_ok) {
1180 error("Can't set RTS/CTS flow control");
1181 } else if (crtscts > 0) {
1182 tiox.x_hflag |= RTSXOFF|CTSXON;
1183 } else if (crtscts < 0) {
1184 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
1188 tios.c_cflag |= CS8 | CREAD | HUPCL;
1189 if (local || !modem)
1190 tios.c_cflag |= CLOCAL;
1191 tios.c_iflag = IGNBRK | IGNPAR;
1194 tios.c_cc[VMIN] = 1;
1195 tios.c_cc[VTIME] = 0;
1197 if (crtscts == -2) {
1198 tios.c_iflag |= IXON | IXOFF;
1199 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
1200 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
1203 speed = translate_speed(inspeed);
1205 cfsetospeed(&tios, speed);
1206 cfsetispeed(&tios, speed);
1208 speed = cfgetospeed(&tios);
1210 * We can't proceed if the serial port speed is 0,
1211 * since that implies that the serial port is disabled.
1213 if ((speed == B0) && !sync_serial)
1214 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1217 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1218 fatal("tcsetattr: %m");
1221 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1222 error("TCSETXF: %m");
1226 baud_rate = inspeed = baud_rate_of(speed);
1232 * restore_tty - restore the terminal to the saved settings.
1239 if (!default_device) {
1241 * Turn off echoing, because otherwise we can get into
1242 * a loop with the tty and the modem echoing to each other.
1243 * We presume we are the sole user of this tty device, so
1244 * when we close it, it will revert to its defaults anyway.
1246 inittermios.c_lflag &= ~(ECHO | ECHONL);
1248 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1249 if (!hungup && errno != ENXIO)
1250 warn("tcsetattr: %m");
1252 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1253 if (!hungup && errno != ENXIO)
1254 error("TCSETXF: %m");
1258 ioctl(fd, TIOCSWINSZ, &wsinfo);
1264 * setdtr - control the DTR line on the serial port.
1265 * This is called from die(), so it shouldn't call die().
1271 int modembits = TIOCM_DTR;
1273 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1277 * open_loopback - open the device we use for getting packets
1278 * in demand mode. Under Solaris 2, we use our existing fd
1279 * to the ppp driver.
1288 * output - Output PPP packet.
1291 output(unit, p, len)
1301 dbglog("sent %P", p, len);
1304 data.buf = (caddr_t) p;
1306 while (putmsg(pppfd, NULL, &data, 0) < 0) {
1307 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1309 error("Couldn't send packet: %m");
1313 pfd.events = POLLOUT;
1314 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
1320 * wait_input - wait until there is data available,
1321 * for the length of time specified by *timo (indefinite
1326 struct timeval *timo;
1330 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1331 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1336 * add_fd - add an fd to the set that wait_input waits for.
1343 for (n = 0; n < n_pollfds; ++n)
1344 if (pollfds[n].fd == fd)
1346 if (n_pollfds < MAX_POLLFDS) {
1347 pollfds[n_pollfds].fd = fd;
1348 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1351 error("Too many inputs!");
1355 * remove_fd - remove an fd from the set that wait_input waits for.
1362 for (n = 0; n < n_pollfds; ++n) {
1363 if (pollfds[n].fd == fd) {
1364 while (++n < n_pollfds)
1365 pollfds[n-1] = pollfds[n];
1374 * wait_loop_output - wait until there is data available on the
1375 * loopback, for the length of time specified by *timo (indefinite
1379 wait_loop_output(timo)
1380 struct timeval *timo;
1386 * wait_time - wait for a given length of time or until a
1387 * signal is received.
1391 struct timeval *timo;
1395 n = select(0, NULL, NULL, NULL, timo);
1396 if (n < 0 && errno != EINTR)
1397 fatal("select: %m");
1403 * read_packet - get a PPP packet from the serial device.
1409 struct strbuf ctrl, data;
1411 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1414 data.maxlen = PPP_MRU + PPP_HDRLEN;
1415 data.buf = (caddr_t) buf;
1416 ctrl.maxlen = sizeof(ctrlbuf);
1417 ctrl.buf = (caddr_t) ctrlbuf;
1419 len = getmsg(pppfd, &ctrl, &data, &flags);
1421 if (errno == EAGAIN || errno == EINTR)
1423 fatal("Error reading packet: %m");
1430 * Got a M_PROTO or M_PCPROTO message. Interpret it
1431 * as a DLPI primitive??
1434 dbglog("got dlpi prim 0x%x, len=%d",
1435 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1441 * get_loop_output - get outgoing packets from the ppp device,
1442 * and detect when we want to bring the real link up.
1443 * Return value is 1 if we need to bring up the link, 0 otherwise.
1451 while ((len = read_packet(inpacket_buf)) > 0) {
1452 if (loop_frame(inpacket_buf, len))
1459 * ppp_send_config - configure the transmit characteristics of
1460 * the ppp interface.
1463 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
1470 #if defined(INET6) && defined(SOL2)
1473 #endif /* defined(INET6) && defined(SOL2) */
1476 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1477 if (hungup && errno == ENXIO)
1479 error("Couldn't set MTU: %m");
1483 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1484 error("Couldn't set transmit ACCM: %m");
1487 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1488 cf[1] = COMP_PROT | COMP_AC;
1489 if (any_compressions() &&
1490 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1491 error("Couldn't set prot/AC compression: %m");
1495 /* set the MTU for IP as well */
1496 memset(&ifr, 0, sizeof(ifr));
1497 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1498 ifr.ifr_metric = link_mtu;
1499 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1500 error("Couldn't set IP MTU: %m");
1503 #if defined(INET6) && defined(SOL2)
1504 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1506 error("Couldn't open IPv6 socket: %m");
1508 memset(&lifr, 0, sizeof(lifr));
1509 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1510 lifr.lifr_mtu = link_mtu;
1511 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1513 error("Couldn't set IPv6 MTU: %m");
1516 #endif /* defined(INET6) && defined(SOL2) */
1520 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
1523 ppp_set_xaccm(unit, accm)
1531 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1532 if (!hungup || errno != ENXIO)
1533 warn("Couldn't set extended ACCM: %m");
1538 * ppp_recv_config - configure the receive-side characteristics of
1539 * the ppp interface.
1542 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
1550 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1551 if (hungup && errno == ENXIO)
1553 error("Couldn't set MRU: %m");
1557 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1558 error("Couldn't set receive ACCM: %m");
1561 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1562 cf[1] = DECOMP_PROT | DECOMP_AC;
1563 if (any_compressions() &&
1564 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1565 error("Couldn't set prot/AC decompression: %m");
1571 * ccp_test - ask kernel whether a given compression method
1572 * is acceptable for use.
1575 ccp_test(unit, opt_ptr, opt_len, for_transmit)
1576 int unit, opt_len, for_transmit;
1579 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1580 opt_ptr, opt_len, 0) >= 0)
1582 return (errno == ENOSR)? 0: -1;
1586 * ccp_flags_set - inform kernel about the current state of CCP.
1589 ccp_flags_set(unit, isopen, isup)
1590 int unit, isopen, isup;
1594 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1595 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1596 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1597 if (!hungup || errno != ENXIO)
1598 error("Couldn't set kernel CCP state: %m");
1603 * get_idle_time - return how long the link has been idle.
1606 get_idle_time(u, ip)
1608 struct ppp_idle *ip;
1610 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1614 * get_ppp_stats - return statistics for the link.
1617 get_ppp_stats(u, stats)
1619 struct pppd_stats *stats;
1624 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1625 error("Couldn't get link statistics: %m");
1628 stats->bytes_in = s.p.ppp_ibytes;
1629 stats->bytes_out = s.p.ppp_obytes;
1635 * set_filters - transfer the pass and active filters to the kernel.
1638 set_filters(pass, active)
1639 struct bpf_program *pass, *active;
1643 if (pass->bf_len > 0) {
1644 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1645 sizeof(struct bpf_program), 0) < 0) {
1646 error("Couldn't set pass-filter in kernel: %m");
1650 if (active->bf_len > 0) {
1651 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1652 sizeof(struct bpf_program), 0) < 0) {
1653 error("Couldn't set active-filter in kernel: %m");
1662 * ccp_fatal_error - returns 1 if decompression was disabled as a
1663 * result of an error detected after decompression of a packet,
1664 * 0 otherwise. This is necessary because of patent nonsense.
1667 ccp_fatal_error(unit)
1673 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1674 if (errno != ENXIO && errno != EINVAL)
1675 error("Couldn't get compression flags: %m");
1678 return cf[0] & CCP_FATALERROR;
1682 * sifvjcomp - config tcp header compression
1685 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1686 int u, vjcomp, xcidcomp, xmaxcid;
1692 maxcid[0] = xcidcomp;
1693 maxcid[1] = 15; /* XXX should be rmaxcid */
1694 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1695 error("Couldn't initialize VJ compression: %m");
1699 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1700 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1701 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1702 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1704 error("Couldn't enable VJ compression: %m");
1711 * sifup - Config the interface up and enable IP packets to pass.
1719 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1720 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1721 error("Couldn't mark interface up (get): %m");
1724 ifr.ifr_flags |= IFF_UP;
1725 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1726 error("Couldn't mark interface up (set): %m");
1734 * sifdown - Config the interface down and disable IP.
1744 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1745 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1746 error("Couldn't mark interface down (get): %m");
1749 ifr.ifr_flags &= ~IFF_UP;
1750 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1751 error("Couldn't mark interface down (set): %m");
1759 * sifnpmode - Set the mode for handling packets for a given NP.
1762 sifnpmode(u, proto, mode)
1770 npi[1] = (int) mode;
1771 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1772 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1778 #if defined(SOL2) && defined(INET6)
1780 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1789 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1794 memset(&lifr, 0, sizeof(lifr));
1795 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1796 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1801 lifr.lifr_flags |= IFF_UP;
1802 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1803 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1814 * sifdown - Config the IPv6 interface down and disable IPv6.
1823 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1827 memset(&lifr, 0, sizeof(lifr));
1828 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1829 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1834 lifr.lifr_flags &= ~IFF_UP;
1835 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1836 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1847 * sif6addr - Config the interface with an IPv6 link-local address
1855 struct sockaddr_storage laddr;
1856 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1859 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1863 memset(&lifr, 0, sizeof(lifr));
1864 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1867 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1868 * zero values, hence the interface token came to be zero too,
1869 * and without this, in.ndpd will complain
1871 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1872 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1878 * Set the interface address and destination address
1880 IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1881 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1886 memset(&lifr, 0, sizeof(lifr));
1887 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1888 IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1889 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1898 * cif6addr - Remove the IPv6 address from interface
1908 #endif /* defined(SOL2) && defined(INET6) */
1911 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1914 * sifaddr - Config the interface IP addresses and netmask.
1924 memset(&ifr, 0, sizeof(ifr));
1925 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1926 ifr.ifr_addr.sa_family = AF_INET;
1927 INET_ADDR(ifr.ifr_addr) = m;
1928 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1929 error("Couldn't set IP netmask: %m");
1932 ifr.ifr_addr.sa_family = AF_INET;
1933 INET_ADDR(ifr.ifr_addr) = o;
1934 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1935 error("Couldn't set local IP address: %m");
1940 * On some systems, we have to explicitly set the point-to-point
1941 * flag bit before we can set a destination address.
1943 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1944 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1945 ifr.ifr_flags |= IFF_POINTOPOINT;
1946 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1947 error("Couldn't mark interface pt-to-pt: %m");
1951 ifr.ifr_dstaddr.sa_family = AF_INET;
1952 INET_ADDR(ifr.ifr_dstaddr) = h;
1953 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1954 error("Couldn't set remote IP address: %m");
1957 #if 0 /* now done in ppp_send_config */
1958 ifr.ifr_metric = link_mtu;
1959 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1960 error("Couldn't set IP MTU: %m");
1969 * cifaddr - Clear the interface IP addresses, and delete routes
1970 * through the interface if possible.
1977 #if defined(__USLC__) /* was: #if 0 */
1978 cifroute(unit, ouraddr, hisaddr);
1980 notice("Removing ppp interface unit");
1981 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1982 error("Can't remove ppp interface unit: %m");
1993 * sifdefaultroute - assign a default route through the address given.
1996 sifdefaultroute(u, l, g)
2002 #if defined(__USLC__)
2003 g = l; /* use the local address as gateway */
2005 memset(&rt, 0, sizeof(rt));
2006 rt.rt_dst.sa_family = AF_INET;
2007 INET_ADDR(rt.rt_dst) = 0;
2008 rt.rt_gateway.sa_family = AF_INET;
2009 INET_ADDR(rt.rt_gateway) = g;
2010 rt.rt_flags = RTF_GATEWAY;
2012 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
2013 error("Can't add default route: %m");
2017 default_route_gateway = g;
2022 * cifdefaultroute - delete a default route through the address given.
2025 cifdefaultroute(u, l, g)
2031 #if defined(__USLC__)
2032 g = l; /* use the local address as gateway */
2034 memset(&rt, 0, sizeof(rt));
2035 rt.rt_dst.sa_family = AF_INET;
2036 INET_ADDR(rt.rt_dst) = 0;
2037 rt.rt_gateway.sa_family = AF_INET;
2038 INET_ADDR(rt.rt_gateway) = g;
2039 rt.rt_flags = RTF_GATEWAY;
2041 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2042 error("Can't delete default route: %m");
2046 default_route_gateway = 0;
2051 * sifproxyarp - Make a proxy ARP entry for the peer.
2054 sifproxyarp(unit, hisaddr)
2058 struct arpreq arpreq;
2060 memset(&arpreq, 0, sizeof(arpreq));
2061 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
2064 arpreq.arp_pa.sa_family = AF_INET;
2065 INET_ADDR(arpreq.arp_pa) = hisaddr;
2066 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
2067 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
2068 error("Couldn't set proxy ARP entry: %m");
2072 proxy_arp_addr = hisaddr;
2077 * cifproxyarp - Delete the proxy ARP entry for the peer.
2080 cifproxyarp(unit, hisaddr)
2084 struct arpreq arpreq;
2086 memset(&arpreq, 0, sizeof(arpreq));
2087 arpreq.arp_pa.sa_family = AF_INET;
2088 INET_ADDR(arpreq.arp_pa) = hisaddr;
2089 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
2090 error("Couldn't delete proxy ARP entry: %m");
2099 * get_ether_addr - get the hardware address of an interface on the
2100 * the same subnet as ipaddr.
2105 get_ether_addr(ipaddr, hwaddr)
2107 struct sockaddr *hwaddr;
2109 struct ifreq *ifr, *ifend, ifreq;
2112 u_int32_t ina, mask;
2115 * Scan through the system's network interfaces.
2118 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2121 ifc.ifc_len = nif * sizeof(struct ifreq);
2122 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2123 if (ifc.ifc_buf == 0)
2125 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2126 warn("Couldn't get system interface list: %m");
2130 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2131 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2132 if (ifr->ifr_addr.sa_family != AF_INET)
2135 * Check that the interface is up, and not point-to-point or loopback.
2137 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2138 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2140 if ((ifreq.ifr_flags &
2141 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
2142 != (IFF_UP|IFF_BROADCAST))
2145 * Get its netmask and check that it's on the right subnet.
2147 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2149 ina = INET_ADDR(ifr->ifr_addr);
2150 mask = INET_ADDR(ifreq.ifr_addr);
2151 if ((ipaddr & mask) == (ina & mask))
2156 warn("No suitable interface found for proxy ARP");
2161 info("found interface %s for proxy ARP", ifr->ifr_name);
2162 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2163 error("Couldn't get hardware address for %s", ifr->ifr_name);
2173 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2176 get_hw_addr_dlpi(name, hwaddr)
2178 struct sockaddr *hwaddr;
2181 int unit, iffd, adrlen;
2182 unsigned char *adrp;
2185 union DL_primitives prim;
2190 * We have to open the device and ask it for its hardware address.
2191 * First split apart the device name and unit.
2193 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2194 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2201 * Open the device and do a DLPI attach and phys_addr_req.
2203 iffd = open(ifdev, O_RDWR);
2205 error("Can't open %s: %m", ifdev);
2208 if (dlpi_attach(iffd, unit) < 0
2209 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2210 || dlpi_info_req(iffd) < 0
2211 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2216 adrlen = reply.prim.info_ack.dl_addr_length;
2217 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2219 #if DL_CURRENT_VERSION >= 2
2220 if (reply.prim.info_ack.dl_sap_length < 0)
2221 adrlen += reply.prim.info_ack.dl_sap_length;
2223 adrp += reply.prim.info_ack.dl_sap_length;
2226 hwaddr->sa_family = AF_UNSPEC;
2227 memcpy(hwaddr->sa_data, adrp, adrlen);
2232 * get_hw_addr - obtain the hardware address for a named interface.
2235 get_hw_addr(name, ina, hwaddr)
2238 struct sockaddr *hwaddr;
2240 /* New way - get the address by doing an arp request. */
2244 s = socket(AF_INET, SOCK_DGRAM, 0);
2247 memset(&req, 0, sizeof(req));
2248 req.arp_pa.sa_family = AF_INET;
2249 INET_ADDR(req.arp_pa) = ina;
2250 if (ioctl(s, SIOCGARP, &req) < 0) {
2251 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2254 *hwaddr = req.arp_ha;
2255 hwaddr->sa_family = AF_UNSPEC;
2261 dlpi_attach(fd, ppa)
2264 dl_attach_req_t req;
2267 req.dl_primitive = DL_ATTACH_REQ;
2269 buf.len = sizeof(req);
2270 buf.buf = (void *) &req;
2271 return putmsg(fd, &buf, NULL, RS_HIPRI);
2281 req.dl_primitive = DL_INFO_REQ;
2282 buf.len = sizeof(req);
2283 buf.buf = (void *) &req;
2284 return putmsg(fd, &buf, NULL, RS_HIPRI);
2288 dlpi_get_reply(fd, reply, expected_prim, maxlen)
2289 union DL_primitives *reply;
2290 int fd, expected_prim, maxlen;
2297 * Use poll to wait for a message with a timeout.
2300 pfd.events = POLLIN | POLLPRI;
2302 n = poll(&pfd, 1, 1000);
2303 } while (n == -1 && errno == EINTR);
2310 buf.maxlen = maxlen;
2311 buf.buf = (void *) reply;
2313 if (getmsg(fd, &buf, NULL, &flags) < 0)
2316 if (buf.len < sizeof(ulong)) {
2318 dbglog("dlpi response short (len=%d)\n", buf.len);
2322 if (reply->dl_primitive == expected_prim)
2326 if (reply->dl_primitive == DL_ERROR_ACK) {
2327 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2328 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2329 reply->error_ack.dl_error_primitive);
2331 dbglog("dlpi unexpected response prim %x\n",
2332 reply->dl_primitive);
2340 * Return user specified netmask, modified by any mask we might determine
2341 * for address `addr' (in network byte order).
2342 * Here we scan through the system's list of interfaces, looking for
2343 * any non-point-to-point interfaces which might appear to be on the same
2344 * network as `addr'. If we find any, we OR in their netmask to the
2345 * user-specified netmask.
2351 u_int32_t mask, nmask, ina;
2352 struct ifreq *ifr, *ifend, ifreq;
2357 if (IN_CLASSA(addr)) /* determine network mask for address class */
2358 nmask = IN_CLASSA_NET;
2359 else if (IN_CLASSB(addr))
2360 nmask = IN_CLASSB_NET;
2362 nmask = IN_CLASSC_NET;
2363 /* class D nets are disallowed by bad_ip_adrs */
2364 mask = netmask | htonl(nmask);
2367 * Scan through the system's network interfaces.
2370 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2373 ifc.ifc_len = nif * sizeof(struct ifreq);
2374 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2375 if (ifc.ifc_buf == 0)
2377 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2378 warn("Couldn't get system interface list: %m");
2382 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2383 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2385 * Check the interface's internet address.
2387 if (ifr->ifr_addr.sa_family != AF_INET)
2389 ina = INET_ADDR(ifr->ifr_addr);
2390 if ((ntohl(ina) & nmask) != (addr & nmask))
2393 * Check that the interface is up, and not point-to-point or loopback.
2395 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2396 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2398 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2402 * Get its netmask and OR it into our mask.
2404 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2406 mask |= INET_ADDR(ifreq.ifr_addr);
2414 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2417 logwtmp(line, name, host)
2418 const char *line, *name, *host;
2420 static struct utmpx utmpx;
2424 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2425 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
2426 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2427 utmpx.ut_pid = getpid();
2428 utmpx.ut_type = USER_PROCESS;
2430 utmpx.ut_type = DEAD_PROCESS;
2432 gettimeofday(&utmpx.ut_tv, NULL);
2433 updwtmpx("/var/adm/wtmpx", &utmpx);
2437 * get_host_seed - return the serial number of this machine.
2444 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2445 error("sysinfo: %m");
2448 return (int) strtoul(buf, NULL, 16);
2452 strioctl(fd, cmd, ptr, ilen, olen)
2453 int fd, cmd, ilen, olen;
2456 struct strioctl str;
2462 if (ioctl(fd, I_STR, &str) == -1)
2464 if (str.ic_len != olen)
2465 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2466 olen, str.ic_len, cmd);
2472 * lock - create a lock file for the named lock device
2475 #define LOCK_PREFIX "/var/spool/locks/LK."
2476 static char lock_file[40]; /* name of lock file created */
2486 if (stat(dev, &sbuf) < 0) {
2487 error("Can't get device number for %s: %m", dev);
2490 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2491 error("Can't lock %s: not a character device", dev);
2494 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2495 LOCK_PREFIX, major(sbuf.st_dev),
2496 major(sbuf.st_rdev), minor(sbuf.st_rdev));
2498 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2500 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2501 /* Read the lock file to find out who has the device locked */
2502 n = read(fd, ascii_pid, 11);
2504 error("Can't read pid from lock file %s", lock_file);
2508 pid = atoi(ascii_pid);
2509 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2510 /* pid no longer exists - remove the lock file */
2511 if (unlink(lock_file) == 0) {
2513 notice("Removed stale lock on %s (pid %d)",
2517 warn("Couldn't remove stale lock on %s",
2520 notice("Device %s is locked by pid %d",
2525 error("Can't create lock file %s: %m", lock_file);
2530 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2531 write(fd, ascii_pid, 11);
2538 * unlock - remove our lockfile
2551 * cifroute - delete a route through the addresses given.
2554 cifroute(u, our, his)
2560 memset(&rt, 0, sizeof(rt));
2561 rt.rt_dst.sa_family = AF_INET;
2562 INET_ADDR(rt.rt_dst) = his;
2563 rt.rt_gateway.sa_family = AF_INET;
2564 INET_ADDR(rt.rt_gateway) = our;
2565 rt.rt_flags = RTF_HOST;
2567 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2568 error("Can't delete route: %m");
2576 * have_route_to - determine if the system has a route to the specified
2577 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
2578 * `addr' is in network byte order.
2579 * For demand mode to work properly, we have to ignore routes
2580 * through our own interface.
2582 #ifndef T_CURRENT /* needed for Solaris 2.5 */
2583 #define T_CURRENT MI_T_CURRENT
2591 int fd, r, flags, i;
2593 struct T_optmgmt_req req;
2597 struct T_optmgmt_ack ack;
2598 unsigned char space[64];
2601 struct strbuf cbuf, dbuf;
2603 mib2_ipRouteEntry_t routes[8];
2604 mib2_ipRouteEntry_t *rp;
2606 fd = open(mux_dev_name, O_RDWR);
2608 warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2612 req.req.PRIM_type = T_OPTMGMT_REQ;
2613 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2614 req.req.OPT_length = sizeof(req.hdr);
2615 req.req.MGMT_flags = T_CURRENT;
2617 req.hdr.level = MIB2_IP;
2621 cbuf.buf = (char *) &req;
2622 cbuf.len = sizeof(req);
2624 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2625 warn("have_route_to: putmsg: %m");
2631 cbuf.buf = (char *) &ack;
2632 cbuf.maxlen = sizeof(ack);
2633 dbuf.buf = (char *) routes;
2634 dbuf.maxlen = sizeof(routes);
2636 r = getmsg(fd, &cbuf, &dbuf, &flags);
2638 warn("have_route_to: getmsg: %m");
2643 if (cbuf.len < sizeof(struct T_optmgmt_ack)
2644 || ack.ack.PRIM_type != T_OPTMGMT_ACK
2645 || ack.ack.MGMT_flags != T_SUCCESS
2646 || ack.ack.OPT_length < sizeof(struct opthdr)) {
2647 dbglog("have_route_to: bad message len=%d prim=%d",
2648 cbuf.len, ack.ack.PRIM_type);
2653 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2654 if (rh->level == 0 && rh->name == 0)
2656 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2657 while (r == MOREDATA)
2658 r = getmsg(fd, NULL, &dbuf, &flags);
2663 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2664 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2665 if (rp->ipRouteMask != ~0) {
2666 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2667 rp->ipRouteDest, rp->ipRouteNextHop,
2669 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2670 && rp->ipRouteNextHop != remote_addr)
2676 r = getmsg(fd, NULL, &dbuf, &flags);
2687 * get_pty - get a pty master/slave pair and chown the slave side to
2688 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
2691 get_pty(master_fdp, slave_fdp, slave_name, uid)
2699 struct termios tios;
2701 mfd = open("/dev/ptmx", O_RDWR);
2703 error("Couldn't open pty master: %m");
2707 pty_name = ptsname(mfd);
2708 if (pty_name == NULL) {
2709 error("Couldn't get name of pty slave");
2713 if (chown(pty_name, uid, -1) < 0)
2714 warn("Couldn't change owner of pty slave: %m");
2715 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2716 warn("Couldn't change permissions on pty slave: %m");
2717 if (unlockpt(mfd) < 0)
2718 warn("Couldn't unlock pty slave: %m");
2720 sfd = open(pty_name, O_RDWR);
2722 error("Couldn't open pty slave %s: %m", pty_name);
2726 if (ioctl(sfd, I_PUSH, "ptem") < 0)
2727 warn("Couldn't push ptem module on pty slave: %m");
2729 dbglog("Using %s", pty_name);
2730 strlcpy(slave_name, pty_name, MAXPATHLEN);