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 1.8 2002/09/07 05:15:25 carlsonj Exp $"
58 #include <sys/termiox.h>
62 #include <sys/types.h>
63 #include <sys/ioccom.h>
64 #include <sys/stream.h>
65 #include <sys/stropts.h>
66 #include <sys/socket.h>
67 #include <sys/sockio.h>
68 #include <sys/sysmacros.h>
69 #include <sys/systeminfo.h>
72 #include <sys/mkdev.h>
74 #include <net/if_arp.h>
75 #include <net/route.h>
76 #include <net/ppp_defs.h>
77 #include <net/pppio.h>
78 #include <netinet/in.h>
80 #include <sys/tihdr.h>
81 #include <sys/tiuser.h>
82 #include <inet/common.h>
83 #include <inet/mib2.h>
84 #include <sys/ethernet.h>
93 #if !defined(PPP_DRV_NAME)
94 #define PPP_DRV_NAME "ppp"
95 #endif /* !defined(PPP_DRV_NAME) */
97 #if !defined(PPP_DEV_NAME)
98 #define PPP_DEV_NAME "/dev/" PPP_DRV_NAME
99 #endif /* !defined(PPP_DEV_NAME) */
101 #if !defined(AHDLC_MOD_NAME)
102 #define AHDLC_MOD_NAME "ppp_ahdl"
103 #endif /* !defined(AHDLC_MOD_NAME) */
105 #if !defined(COMP_MOD_NAME)
106 #define COMP_MOD_NAME "ppp_comp"
107 #endif /* !defined(COMP_MOD_NAME) */
109 #if !defined(IP_DEV_NAME)
110 #define IP_DEV_NAME "/dev/ip"
111 #endif /* !defined(IP_DEV_NAME) */
113 #if !defined(IP_MOD_NAME)
114 #define IP_MOD_NAME "ip"
115 #endif /* !defined(IP_MOD_NAME) */
117 #if !defined(UDP_DEV_NAME) && defined(SOL2)
118 #define UDP_DEV_NAME "/dev/udp"
119 #endif /* !defined(UDP_DEV_NAME) && defined(SOL2) */
121 #if !defined(UDP6_DEV_NAME) && defined(SOL2)
122 #define UDP6_DEV_NAME "/dev/udp6"
123 #endif /* !defined(UDP6_DEV_NAME) && defined(SOL2) */
125 static const char rcsid[] = RCSID;
129 * "/dev/udp" is used as a multiplexor to PLINK the interface stream
130 * under. It is used in place of "/dev/ip" since STREAMS will not let
131 * a driver be PLINK'ed under itself, and "/dev/ip" is typically the
132 * driver at the bottom of the tunneling interfaces stream.
134 static char *mux_dev_name = UDP_DEV_NAME;
136 static char *mux_dev_name = IP_DEV_NAME;
139 static int fdmuxid = -1;
141 static int ipmuxid = -1;
143 #if defined(INET6) && defined(SOL2)
144 static int ip6fd; /* IP file descriptor */
145 static int ip6muxid = -1; /* Multiplexer file descriptor */
146 static int if6_is_up = 0; /* IPv6 interface has been marked up */
148 #define _IN6_LLX_FROM_EUI64(l, s, eui64, as) do { \
149 s->sin6_addr.s6_addr32[0] = htonl(as); \
150 eui64_copy(eui64, s->sin6_addr.s6_addr32[2]); \
151 s->sin6_family = AF_INET6; \
152 l.lifr_addr.ss_family = AF_INET6; \
153 l.lifr_addrlen = 10; \
154 l.lifr_addr = laddr; \
157 #define IN6_LLADDR_FROM_EUI64(l, s, eui64) \
158 _IN6_LLX_FROM_EUI64(l, s, eui64, 0xfe800000)
160 #define IN6_LLTOKEN_FROM_EUI64(l, s, eui64) \
161 _IN6_LLX_FROM_EUI64(l, s, eui64, 0)
163 #endif /* defined(INET6) && defined(SOL2) */
165 #if defined(INET6) && defined(SOL2)
166 static char first_ether_name[LIFNAMSIZ]; /* Solaris 8 and above */
168 static char first_ether_name[IFNAMSIZ]; /* Before Solaris 8 */
169 #define MAXIFS 256 /* Max # of interfaces */
170 #endif /* defined(INET6) && defined(SOL2) */
172 static int restore_term;
173 static struct termios inittermios;
175 static struct termiox inittermiox;
176 static int termiox_ok;
178 static struct winsize wsinfo; /* Initial window size info */
179 static pid_t tty_sid; /* original session ID for terminal */
181 extern u_char inpacket_buf[]; /* borrowed from main.c */
183 #define MAX_POLLFDS 32
184 static struct pollfd pollfds[MAX_POLLFDS];
185 static int n_pollfds;
187 static int link_mtu, link_mru;
190 static int tty_nmodules;
191 static char tty_modules[NMODULES][FMNAMESZ+1];
192 static int tty_npushed;
194 static int if_is_up; /* Interface has been marked up */
195 static u_int32_t remote_addr; /* IP address of peer */
196 static u_int32_t default_route_gateway; /* Gateway for default route added */
197 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
199 /* Prototypes for procedures local to this file. */
200 static int translate_speed __P((int));
201 static int baud_rate_of __P((int));
202 static int get_ether_addr __P((u_int32_t, struct sockaddr *));
203 static int get_hw_addr __P((char *, u_int32_t, struct sockaddr *));
204 static int get_hw_addr_dlpi __P((char *, struct sockaddr *));
205 static int dlpi_attach __P((int, int));
206 static int dlpi_info_req __P((int));
207 static int dlpi_get_reply __P((int, union DL_primitives *, int, int));
208 static int strioctl __P((int, int, void *, int, int));
212 * sifppa - Sets interface ppa
214 * without setting the ppa, ip module will return EINVAL upon setting the
215 * interface UP (SIOCSxIFFLAGS). This is because ip module in 2.8 expects
216 * two DLPI_INFO_REQ to be sent down to the driver (below ip) before
217 * IFF_UP can be set. Plumbing the device causes one DLPI_INFO_REQ to
218 * be sent down, and the second DLPI_INFO_REQ is sent upon receiving
219 * IF_UNITSEL (old) or SIOCSLIFNAME (new) ioctls. Such setting of the ppa
220 * is required because the ppp DLPI provider advertises itself as
221 * a DLPI style 2 type, which requires a point of attachment to be
222 * specified. The only way the user can specify a point of attachment
223 * is via SIOCSLIFNAME or IF_UNITSEL.
225 * Such changes in the behavior of ip module was made to meet new or
226 * evolving standards requirements.
234 return (int)ioctl(fd, IF_UNITSEL, (char *)&ppa);
238 #if defined(SOL2) && defined(INET6)
240 * get_first_ethernet - returns the first Ethernet interface name found in
241 * the system, or NULL if none is found
243 * NOTE: This is the lifreq version (Solaris 8 and above)
250 struct lifreq *plifreq;
252 int fd, num_ifs, i, found;
256 fd = socket(AF_INET, SOCK_DGRAM, 0);
262 * Find out how many interfaces are running
264 lifn.lifn_family = AF_UNSPEC;
265 lifn.lifn_flags = LIFC_NOXMIT;
266 if (ioctl(fd, SIOCGLIFNUM, &lifn) < 0) {
268 error("could not determine number of interfaces: %m");
272 num_ifs = lifn.lifn_count;
273 req_size = num_ifs * sizeof(struct lifreq);
274 req = malloc(req_size);
277 error("out of memory");
282 * Get interface configuration info for all interfaces
284 lifc.lifc_family = AF_UNSPEC;
285 lifc.lifc_flags = LIFC_NOXMIT;
286 lifc.lifc_len = req_size;
288 if (ioctl(fd, SIOCGLIFCONF, &lifc) < 0) {
291 error("SIOCGLIFCONF: %m");
296 * And traverse each interface to look specifically for the first
297 * occurence of an Ethernet interface which has been marked up
299 plifreq = lifc.lifc_req;
301 for (i = lifc.lifc_len / sizeof(struct lifreq); i > 0; i--, plifreq++) {
303 if (strchr(plifreq->lifr_name, ':') != NULL)
306 memset(&lifr, 0, sizeof(lifr));
307 strncpy(lifr.lifr_name, plifreq->lifr_name, sizeof(lifr.lifr_name));
308 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
311 error("SIOCGLIFFLAGS: %m");
314 fl = lifr.lifr_flags;
316 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
317 != (IFF_UP | IFF_BROADCAST))
327 strncpy(first_ether_name, lifr.lifr_name, sizeof(first_ether_name));
328 return (char *)first_ether_name;
334 * get_first_ethernet - returns the first Ethernet interface name found in
335 * the system, or NULL if none is found
337 * NOTE: This is the ifreq version (before Solaris 8).
343 struct ifreq *pifreq;
345 int fd, num_ifs, i, found;
349 fd = socket(AF_INET, SOCK_DGRAM, 0);
355 * Find out how many interfaces are running
357 if (ioctl(fd, SIOCGIFNUM, (char *)&num_ifs) < 0) {
361 req_size = num_ifs * sizeof(struct ifreq);
362 req = malloc(req_size);
365 error("out of memory");
370 * Get interface configuration info for all interfaces
372 ifc.ifc_len = req_size;
374 if (ioctl(fd, SIOCGIFCONF, &ifc) < 0) {
377 error("SIOCGIFCONF: %m");
382 * And traverse each interface to look specifically for the first
383 * occurence of an Ethernet interface which has been marked up
385 pifreq = ifc.ifc_req;
387 for (i = ifc.ifc_len / sizeof(struct ifreq); i > 0; i--, pifreq++) {
389 if (strchr(pifreq->ifr_name, ':') != NULL)
392 memset(&ifr, 0, sizeof(ifr));
393 strncpy(ifr.ifr_name, pifreq->ifr_name, sizeof(ifr.ifr_name));
394 if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
397 error("SIOCGIFFLAGS: %m");
402 if ((fl & (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
403 != (IFF_UP | IFF_BROADCAST))
413 strncpy(first_ether_name, ifr.ifr_name, sizeof(first_ether_name));
414 return (char *)first_ether_name;
418 #endif /* defined(SOL2) && defined(INET6) */
422 * get_if_hwaddr - get the hardware address for the specified
423 * network interface device.
426 get_if_hwaddr(u_char *addr, char *if_name)
428 struct sockaddr s_eth_addr;
429 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
435 * Send DL_INFO_REQ to the driver to solicit its MAC address
437 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
438 error("could not obtain hardware address for %s", if_name);
442 memcpy(addr, eth_addr->ether_addr_octet, 6);
447 #if defined(SOL2) && defined(INET6)
449 * slifname - Sets interface ppa and flags
451 * in addition to the comments stated in sifppa(), IFF_IPV6 bit must
452 * be set in order to declare this as an IPv6 interface
462 memset(&lifr, 0, sizeof(lifr));
463 ret = ioctl(fd, SIOCGLIFFLAGS, &lifr);
467 lifr.lifr_flags |= IFF_IPV6;
468 lifr.lifr_flags &= ~(IFF_BROADCAST | IFF_IPV4);
470 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
472 ret = ioctl(fd, SIOCSLIFNAME, &lifr);
482 * ether_to_eui64 - Convert 48-bit Ethernet address into 64-bit EUI
484 * walks the list of valid ethernet interfaces, and convert the first
485 * found 48-bit MAC address into EUI 64. caller also assumes that
486 * the system has a properly configured Ethernet interface for this
487 * function to return non-zero.
490 ether_to_eui64(eui64_t *p_eui64)
492 struct sockaddr s_eth_addr;
493 struct ether_addr *eth_addr = (struct ether_addr *)&s_eth_addr.sa_data;
496 if ((if_name = get_first_ethernet()) == NULL) {
497 error("no persistent id can be found");
502 * Send DL_INFO_REQ to the driver to solicit its MAC address
504 if (!get_hw_addr_dlpi(if_name, &s_eth_addr)) {
505 error("could not obtain hardware address for %s", if_name);
510 * And convert the EUI-48 into EUI-64, per RFC 2472 [sec 4.1]
512 p_eui64->e8[0] = (eth_addr->ether_addr_octet[0] & 0xFF) | 0x02;
513 p_eui64->e8[1] = (eth_addr->ether_addr_octet[1] & 0xFF);
514 p_eui64->e8[2] = (eth_addr->ether_addr_octet[2] & 0xFF);
515 p_eui64->e8[3] = 0xFF;
516 p_eui64->e8[4] = 0xFE;
517 p_eui64->e8[5] = (eth_addr->ether_addr_octet[3] & 0xFF);
518 p_eui64->e8[6] = (eth_addr->ether_addr_octet[4] & 0xFF);
519 p_eui64->e8[7] = (eth_addr->ether_addr_octet[5] & 0xFF);
523 #endif /* defined(SOL2) && defined(INET6) */
526 * sys_init - System-dependent initialization.
533 #if defined(INET6) && defined(SOL2)
536 #endif /* defined(INET6) && defined(SOL2) */
539 union DL_primitives prim;
542 #endif /* !defined(SOL2) */
544 ipfd = open(mux_dev_name, O_RDWR, 0);
546 fatal("Couldn't open IP device: %m");
548 #if defined(INET6) && defined(SOL2)
549 ip6fd = open(UDP6_DEV_NAME, O_RDWR, 0);
551 fatal("Couldn't open IP device (2): %m");
552 #endif /* defined(INET6) && defined(SOL2) */
554 if (default_device && !notty)
555 tty_sid = getsid((pid_t)0);
557 pppfd = open(PPP_DEV_NAME, O_RDWR | O_NONBLOCK, 0);
559 fatal("Can't open %s: %m", PPP_DEV_NAME);
560 if (kdebugflag & 1) {
561 x = PPPDBG_LOG + PPPDBG_DRIVER;
562 strioctl(pppfd, PPPIO_DEBUG, &x, sizeof(int), 0);
565 /* Assign a new PPA and get its unit number. */
566 if (strioctl(pppfd, PPPIO_NEWPPA, &ifunit, 0, sizeof(int)) < 0)
567 fatal("Can't create new PPP interface: %m");
571 * Since sys_init() is called prior to ifname being set in main(),
572 * we need to get the ifname now, otherwise slifname(), and others,
573 * will fail, or maybe, I should move them to a later point ?
574 * <adi.masputra@sun.com>
576 sprintf(ifname, PPP_DRV_NAME "%d", ifunit);
577 #endif /* defined(SOL2) */
579 * Open the ppp device again and link it under the ip multiplexor.
580 * IP will assign a unit number which hopefully is the same as ifunit.
581 * I don't know any way to be certain they will be the same. :-(
583 ifd = open(PPP_DEV_NAME, O_RDWR, 0);
585 fatal("Can't open %s (2): %m", PPP_DEV_NAME);
586 if (kdebugflag & 1) {
587 x = PPPDBG_LOG + PPPDBG_DRIVER;
588 strioctl(ifd, PPPIO_DEBUG, &x, sizeof(int), 0);
591 #if defined(INET6) && defined(SOL2)
592 i6fd = open(PPP_DEV_NAME, O_RDWR, 0);
595 fatal("Can't open %s (3): %m", PPP_DEV_NAME);
597 if (kdebugflag & 1) {
598 x = PPPDBG_LOG + PPPDBG_DRIVER;
599 strioctl(i6fd, PPPIO_DEBUG, &x, sizeof(int), 0);
601 #endif /* defined(INET6) && defined(SOL2) */
604 if (ioctl(ifd, I_PUSH, IP_MOD_NAME) < 0) {
608 #endif /* defined(INET6) */
609 fatal("Can't push IP module: %m");
613 * Assign ppa according to the unit number returned by ppp device
614 * after plumbing is completed above.
616 if (sifppa(ifd, ifunit) < 0) {
620 #endif /* defined(INET6) */
621 fatal("Can't set ppa for unit %d: %m", ifunit);
626 * An IPv6 interface is created anyway, even when the user does not
627 * explicitly enable it. Note that the interface will be marked
628 * IPv6 during slifname().
630 if (ioctl(i6fd, I_PUSH, IP_MOD_NAME) < 0) {
633 fatal("Can't push IP module (2): %m");
637 * Assign ppa according to the unit number returned by ppp device
638 * after plumbing is completed above. In addition, mark the interface
639 * as an IPv6 interface.
641 if (slifname(i6fd, ifunit) < 0) {
644 fatal("Can't set ifname for unit %d: %m", ifunit);
646 #endif /* defined(INET6) */
648 ipmuxid = ioctl(ipfd, I_PLINK, ifd);
653 #endif /* defined(INET6) */
654 fatal("Can't I_PLINK PPP device to IP: %m");
657 memset(&ifr, 0, sizeof(ifr));
658 sprintf(ifr.ifr_name, "%s", ifname);
659 ifr.ifr_ip_muxid = ipmuxid;
662 * In Sol 8 and later, STREAMS dynamic module plumbing feature exists.
663 * This is so that an arbitrary module can be inserted, or deleted,
664 * between ip module and the device driver without tearing down the
665 * existing stream. Such feature requires the mux ids, which is set
666 * by SIOCSIFMUXID (or SIOCLSIFMUXID).
668 if (ioctl(ipfd, SIOCSIFMUXID, &ifr) < 0) {
669 ioctl(ipfd, I_PUNLINK, ipmuxid);
672 #endif /* defined(INET6) */
673 fatal("SIOCSIFMUXID: %m");
676 #else /* else if !defined(SOL2) */
678 if (dlpi_attach(ifd, ifunit) < 0 ||
679 dlpi_get_reply(ifd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0) {
681 fatal("Can't attach to ppp%d: %m", ifunit);
684 ipmuxid = ioctl(ipfd, I_LINK, ifd);
687 fatal("Can't link PPP device to IP: %m");
688 #endif /* defined(SOL2) */
690 #if defined(INET6) && defined(SOL2)
691 ip6muxid = ioctl(ip6fd, I_PLINK, i6fd);
694 ioctl(ipfd, I_PUNLINK, ipmuxid);
695 fatal("Can't I_PLINK PPP device to IP (2): %m");
698 memset(&lifr, 0, sizeof(lifr));
699 sprintf(lifr.lifr_name, "%s", ifname);
700 lifr.lifr_ip_muxid = ip6muxid;
703 * Let IP know of the mux id [see comment for SIOCSIFMUXID above]
705 if (ioctl(ip6fd, SIOCSLIFMUXID, &lifr) < 0) {
706 ioctl(ipfd, I_PUNLINK, ipmuxid);
707 ioctl(ip6fd, I_PUNLINK, ip6muxid);
708 fatal("Can't link PPP device to IP (2): %m");
710 #endif /* defined(INET6) && defined(SOL2) */
713 /* Set the interface name for the link. */
714 slprintf(ifr.ifr_name, sizeof(ifr.ifr_name), PPP_DRV_NAME "%d", ifunit);
715 ifr.ifr_metric = ipmuxid;
716 if (strioctl(ipfd, SIOCSIFNAME, (char *)&ifr, sizeof ifr, 0) < 0)
717 fatal("Can't set interface name %s: %m", ifr.ifr_name);
718 #endif /* !defined(SOL2) */
724 * sys_cleanup - restore any system state we modified before exiting:
725 * mark the interface down, delete default route and/or proxy arp entry.
726 * This should call die() because it's called from die().
735 #endif /* defined(INET6) */
736 #endif /* defined(SOL2) */
738 #if defined(SOL2) && defined(INET6)
741 #endif /* defined(SOL2) && defined(INET6) */
744 if (default_route_gateway)
745 cifdefaultroute(0, default_route_gateway, default_route_gateway);
747 cifproxyarp(0, proxy_arp_addr);
750 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
751 * unlink and re-link the modules, causing the muxid to change.
753 memset(&ifr, 0, sizeof(ifr));
754 sprintf(ifr.ifr_name, "%s", ifname);
755 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
756 error("SIOCGIFFLAGS: %m");
760 if (ioctl(ipfd, SIOCGIFMUXID, &ifr) < 0) {
761 error("SIOCGIFMUXID: %m");
765 ipmuxid = ifr.ifr_ip_muxid;
767 if (ioctl(ipfd, I_PUNLINK, ipmuxid) < 0) {
768 error("Can't I_PUNLINK PPP from IP: %m");
773 * Make sure we ask ip what the muxid, because 'ifconfig modlist' will
774 * unlink and re-link the modules, causing the muxid to change.
776 memset(&lifr, 0, sizeof(lifr));
777 sprintf(lifr.lifr_name, "%s", ifname);
778 if (ioctl(ip6fd, SIOCGLIFFLAGS, &lifr) < 0) {
779 error("SIOCGLIFFLAGS: %m");
783 if (ioctl(ip6fd, SIOCGLIFMUXID, &lifr) < 0) {
784 error("SIOCGLIFMUXID: %m");
788 ip6muxid = lifr.lifr_ip_muxid;
790 if (ioctl(ip6fd, I_PUNLINK, ip6muxid) < 0) {
791 error("Can't I_PUNLINK PPP from IP (2): %m");
793 #endif /* defined(INET6) */
794 #endif /* defined(SOL2) */
798 * sys_close - Clean up in a child process before execing.
804 #if defined(INET6) && defined(SOL2)
806 #endif /* defined(INET6) && defined(SOL2) */
812 * sys_check_options - check the options that the user specified
822 * daemon - Detach us from controlling terminal session.
825 daemon(nochdir, noclose)
826 int nochdir, noclose;
830 if ((pid = fork()) < 0)
833 exit(0); /* parent dies */
838 fclose(stdin); /* don't need stdin, stdout, stderr */
847 * ppp_available - check whether the system has any ppp interfaces
854 return stat(PPP_DEV_NAME, &buf) >= 0;
858 * any_compressions - see if compression is enabled or not
860 * In the STREAMS implementation of kernel-portion pppd,
861 * the comp STREAMS module performs the ACFC, PFC, as well
862 * CCP and VJ compressions. However, if the user has explicitly
863 * declare to not enable them from the command line, there is
864 * no point of having the comp module be pushed on the stream.
869 if ((!lcp_wantoptions[0].neg_accompression) &&
870 (!lcp_wantoptions[0].neg_pcompression) &&
871 (!ccp_protent.enabled_flag) &&
872 (!ipcp_wantoptions[0].neg_vj)) {
879 * tty_establish_ppp - Turn the serial port into a ppp interface.
882 tty_establish_ppp(fd)
887 /* Pop any existing modules off the tty stream. */
889 if (ioctl(fd, I_LOOK, tty_modules[i]) < 0
890 || strcmp(tty_modules[i], "ptem") == 0
891 || ioctl(fd, I_POP, 0) < 0)
895 /* Push the async hdlc module and the compressor module. */
899 if (ioctl(fd, I_PUSH, AHDLC_MOD_NAME) < 0) {
900 error("Couldn't push PPP Async HDLC module: %m");
905 if (kdebugflag & 4) {
906 i = PPPDBG_LOG + PPPDBG_AHDLC;
907 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
910 * There's no need to push comp module if we don't intend
911 * to compress anything
913 if (any_compressions()) {
914 if (ioctl(fd, I_PUSH, COMP_MOD_NAME) < 0)
915 error("Couldn't push PPP compression module: %m");
920 if (kdebugflag & 2) {
922 if (any_compressions())
924 strioctl(pppfd, PPPIO_DEBUG, &i, sizeof(int), 0);
927 /* Link the serial port under the PPP multiplexor. */
928 if ((fdmuxid = ioctl(pppfd, I_LINK, fd)) < 0) {
929 error("Can't link tty to PPP mux: %m");
937 * tty_disestablish_ppp - Restore the serial port to normal operation.
938 * It attempts to reconstruct the stream with the previously popped
939 * modules. This shouldn't call die() because it's called from die().
942 tty_disestablish_ppp(fd)
948 if (ioctl(pppfd, I_UNLINK, fdmuxid) < 0) {
950 error("Can't unlink tty from PPP mux: %m");
955 while (tty_npushed > 0 && ioctl(fd, I_POP, 0) >= 0)
957 for (i = tty_nmodules - 1; i >= 0; --i)
958 if (ioctl(fd, I_PUSH, tty_modules[i]) < 0)
959 error("Couldn't restore tty module %s: %m",
962 if (hungup && default_device && tty_sid > 0) {
964 * If we have received a hangup, we need to send a SIGHUP
965 * to the terminal's controlling process. The reason is
966 * that the original stream head for the terminal hasn't
967 * seen the M_HANGUP message (it went up through the ppp
968 * driver to the stream head for our fd to /dev/ppp).
970 kill(tty_sid, SIGHUP);
976 * Check whether the link seems not to be 8-bit clean.
984 if (strioctl(pppfd, PPPIO_GCLEAN, &x, 0, sizeof(x)) < 0)
989 s = "bit 7 set to 1";
992 s = "bit 7 set to 0";
1002 warn("Serial link is not 8-bit clean:");
1003 warn("All received characters had %s", s);
1008 * List of valid speeds.
1011 int speed_int, speed_val;
1080 { 115200, B115200 },
1083 { 153600, B153600 },
1086 { 230400, B230400 },
1089 { 307200, B307200 },
1092 { 460800, B460800 },
1098 * Translate from bits/second to a speed_t.
1101 translate_speed(bps)
1104 struct speed *speedp;
1108 for (speedp = speeds; speedp->speed_int; speedp++)
1109 if (bps == speedp->speed_int)
1110 return speedp->speed_val;
1111 warn("speed %d not supported", bps);
1116 * Translate from a speed_t to bits/second.
1122 struct speed *speedp;
1126 for (speedp = speeds; speedp->speed_int; speedp++)
1127 if (speed == speedp->speed_val)
1128 return speedp->speed_int;
1133 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
1134 * at the requested speed, etc. If `local' is true, set CLOCAL
1135 * regardless of whether the modem option was specified.
1138 set_up_tty(fd, local)
1142 struct termios tios;
1143 #if !defined (CRTSCTS)
1144 struct termiox tiox;
1147 if (!sync_serial && tcgetattr(fd, &tios) < 0)
1148 fatal("tcgetattr: %m");
1152 if (!sync_serial && ioctl (fd, TCGETX, &tiox) < 0) {
1154 if (errno != ENOTTY)
1155 error("TCGETX: %m");
1159 if (!restore_term) {
1165 ioctl(fd, TIOCGWINSZ, &wsinfo);
1168 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
1171 tios.c_cflag |= CRTSCTS;
1172 else if (crtscts < 0)
1173 tios.c_cflag &= ~CRTSCTS;
1175 if (crtscts != 0 && !termiox_ok) {
1176 error("Can't set RTS/CTS flow control");
1177 } else if (crtscts > 0) {
1178 tiox.x_hflag |= RTSXOFF|CTSXON;
1179 } else if (crtscts < 0) {
1180 tiox.x_hflag &= ~(RTSXOFF|CTSXON);
1184 tios.c_cflag |= CS8 | CREAD | HUPCL;
1185 if (local || !modem)
1186 tios.c_cflag |= CLOCAL;
1187 tios.c_iflag = IGNBRK | IGNPAR;
1190 tios.c_cc[VMIN] = 1;
1191 tios.c_cc[VTIME] = 0;
1193 if (crtscts == -2) {
1194 tios.c_iflag |= IXON | IXOFF;
1195 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
1196 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
1199 speed = translate_speed(inspeed);
1201 cfsetospeed(&tios, speed);
1202 cfsetispeed(&tios, speed);
1204 speed = cfgetospeed(&tios);
1206 * We can't proceed if the serial port speed is 0,
1207 * since that implies that the serial port is disabled.
1209 if ((speed == B0) && !sync_serial)
1210 fatal("Baud rate for %s is 0; need explicit baud rate", devnam);
1213 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &tios) < 0)
1214 fatal("tcsetattr: %m");
1217 if (!sync_serial && termiox_ok && ioctl (fd, TCSETXF, &tiox) < 0){
1218 error("TCSETXF: %m");
1222 baud_rate = inspeed = baud_rate_of(speed);
1228 * restore_tty - restore the terminal to the saved settings.
1235 if (!default_device) {
1237 * Turn off echoing, because otherwise we can get into
1238 * a loop with the tty and the modem echoing to each other.
1239 * We presume we are the sole user of this tty device, so
1240 * when we close it, it will revert to its defaults anyway.
1242 inittermios.c_lflag &= ~(ECHO | ECHONL);
1244 if (!sync_serial && tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
1245 if (!hungup && errno != ENXIO)
1246 warn("tcsetattr: %m");
1248 if (!sync_serial && ioctl (fd, TCSETXF, &inittermiox) < 0){
1249 if (!hungup && errno != ENXIO)
1250 error("TCSETXF: %m");
1254 ioctl(fd, TIOCSWINSZ, &wsinfo);
1260 * setdtr - control the DTR line on the serial port.
1261 * This is called from die(), so it shouldn't call die().
1267 int modembits = TIOCM_DTR;
1269 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
1273 * open_loopback - open the device we use for getting packets
1274 * in demand mode. Under Solaris 2, we use our existing fd
1275 * to the ppp driver.
1284 * output - Output PPP packet.
1287 output(unit, p, len)
1296 dump_packet("sent", p, len);
1297 if (snoop_send_hook) snoop_send_hook(p, len);
1300 data.buf = (caddr_t) p;
1302 while (putmsg(pppfd, NULL, &data, 0) < 0) {
1303 if (--retries < 0 || (errno != EWOULDBLOCK && errno != EAGAIN)) {
1305 error("Couldn't send packet: %m");
1309 pfd.events = POLLOUT;
1310 poll(&pfd, 1, 250); /* wait for up to 0.25 seconds */
1316 * wait_input - wait until there is data available,
1317 * for the length of time specified by *timo (indefinite
1322 struct timeval *timo;
1326 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
1327 if (poll(pollfds, n_pollfds, t) < 0 && errno != EINTR)
1332 * add_fd - add an fd to the set that wait_input waits for.
1339 for (n = 0; n < n_pollfds; ++n)
1340 if (pollfds[n].fd == fd)
1342 if (n_pollfds < MAX_POLLFDS) {
1343 pollfds[n_pollfds].fd = fd;
1344 pollfds[n_pollfds].events = POLLIN | POLLPRI | POLLHUP;
1347 error("Too many inputs!");
1351 * remove_fd - remove an fd from the set that wait_input waits for.
1358 for (n = 0; n < n_pollfds; ++n) {
1359 if (pollfds[n].fd == fd) {
1360 while (++n < n_pollfds)
1361 pollfds[n-1] = pollfds[n];
1370 * wait_loop_output - wait until there is data available on the
1371 * loopback, for the length of time specified by *timo (indefinite
1375 wait_loop_output(timo)
1376 struct timeval *timo;
1382 * wait_time - wait for a given length of time or until a
1383 * signal is received.
1387 struct timeval *timo;
1391 n = select(0, NULL, NULL, NULL, timo);
1392 if (n < 0 && errno != EINTR)
1393 fatal("select: %m");
1399 * read_packet - get a PPP packet from the serial device.
1405 struct strbuf ctrl, data;
1407 unsigned char ctrlbuf[sizeof(union DL_primitives) + 64];
1410 data.maxlen = PPP_MRU + PPP_HDRLEN;
1411 data.buf = (caddr_t) buf;
1412 ctrl.maxlen = sizeof(ctrlbuf);
1413 ctrl.buf = (caddr_t) ctrlbuf;
1415 len = getmsg(pppfd, &ctrl, &data, &flags);
1417 if (errno == EAGAIN || errno == EINTR)
1419 fatal("Error reading packet: %m");
1426 * Got a M_PROTO or M_PCPROTO message. Interpret it
1427 * as a DLPI primitive??
1430 dbglog("got dlpi prim 0x%x, len=%d",
1431 ((union DL_primitives *)ctrlbuf)->dl_primitive, ctrl.len);
1437 * get_loop_output - get outgoing packets from the ppp device,
1438 * and detect when we want to bring the real link up.
1439 * Return value is 1 if we need to bring up the link, 0 otherwise.
1447 while ((len = read_packet(inpacket_buf)) > 0) {
1448 if (loop_frame(inpacket_buf, len))
1455 * netif_set_mtu - set the MTU on the PPP network interface.
1458 netif_set_mtu(unit, mtu)
1462 #if defined(INET6) && defined(SOL2)
1465 #endif /* defined(INET6) && defined(SOL2) */
1467 memset(&ifr, 0, sizeof(ifr));
1468 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1469 ifr.ifr_metric = link_mtu;
1470 if (ioctl(ipfd, SIOCSIFMTU, &ifr) < 0) {
1471 error("Couldn't set IP MTU (%s): %m", ifr.ifr_name);
1474 #if defined(INET6) && defined(SOL2)
1475 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1477 error("Couldn't open IPv6 socket: %m");
1479 memset(&lifr, 0, sizeof(lifr));
1480 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1481 lifr.lifr_mtu = link_mtu;
1482 if (ioctl(fd, SIOCSLIFMTU, &lifr) < 0) {
1484 error("Couldn't set IPv6 MTU (%s): %m", ifr.ifr_name);
1487 #endif /* defined(INET6) && defined(SOL2) */
1491 * tty_send_config - configure the transmit characteristics of
1492 * the ppp interface.
1495 tty_send_config(mtu, asyncmap, pcomp, accomp)
1503 if (strioctl(pppfd, PPPIO_MTU, &mtu, sizeof(mtu), 0) < 0) {
1504 if (hungup && errno == ENXIO)
1506 error("Couldn't set MTU: %m");
1510 if (strioctl(pppfd, PPPIO_XACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1511 error("Couldn't set transmit ACCM: %m");
1514 cf[0] = (pcomp? COMP_PROT: 0) + (accomp? COMP_AC: 0);
1515 cf[1] = COMP_PROT | COMP_AC;
1516 if (any_compressions() &&
1517 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1518 error("Couldn't set prot/AC compression: %m");
1524 * tty_set_xaccm - set the extended transmit ACCM for the interface.
1534 && strioctl(pppfd, PPPIO_XACCM, accm, sizeof(ext_accm), 0) < 0) {
1535 if (!hungup || errno != ENXIO)
1536 warn("Couldn't set extended ACCM: %m");
1541 * tty_recv_config - configure the receive-side characteristics of
1542 * the ppp interface.
1545 tty_recv_config(mru, asyncmap, pcomp, accomp)
1553 if (strioctl(pppfd, PPPIO_MRU, &mru, sizeof(mru), 0) < 0) {
1554 if (hungup && errno == ENXIO)
1556 error("Couldn't set MRU: %m");
1560 if (strioctl(pppfd, PPPIO_RACCM, &asyncmap, sizeof(asyncmap), 0) < 0) {
1561 error("Couldn't set receive ACCM: %m");
1564 cf[0] = (pcomp? DECOMP_PROT: 0) + (accomp? DECOMP_AC: 0);
1565 cf[1] = DECOMP_PROT | DECOMP_AC;
1566 if (any_compressions() &&
1567 strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1568 error("Couldn't set prot/AC decompression: %m");
1574 * ccp_test - ask kernel whether a given compression method
1575 * is acceptable for use.
1578 ccp_test(unit, opt_ptr, opt_len, for_transmit)
1579 int unit, opt_len, for_transmit;
1582 if (strioctl(pppfd, (for_transmit? PPPIO_XCOMP: PPPIO_RCOMP),
1583 opt_ptr, opt_len, 0) >= 0)
1585 return (errno == ENOSR)? 0: -1;
1589 * ccp_flags_set - inform kernel about the current state of CCP.
1592 ccp_flags_set(unit, isopen, isup)
1593 int unit, isopen, isup;
1597 cf[0] = (isopen? CCP_ISOPEN: 0) + (isup? CCP_ISUP: 0);
1598 cf[1] = CCP_ISOPEN | CCP_ISUP | CCP_ERROR | CCP_FATALERROR;
1599 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1600 if (!hungup || errno != ENXIO)
1601 error("Couldn't set kernel CCP state: %m");
1606 * get_idle_time - return how long the link has been idle.
1609 get_idle_time(u, ip)
1611 struct ppp_idle *ip;
1613 return strioctl(pppfd, PPPIO_GIDLE, ip, 0, sizeof(struct ppp_idle)) >= 0;
1617 * get_ppp_stats - return statistics for the link.
1620 get_ppp_stats(u, stats)
1622 struct pppd_stats *stats;
1627 strioctl(pppfd, PPPIO_GETSTAT, &s, 0, sizeof(s)) < 0) {
1628 error("Couldn't get link statistics: %m");
1631 stats->bytes_in = s.p.ppp_ibytes;
1632 stats->bytes_out = s.p.ppp_obytes;
1633 stats->pkts_in = s.p.ppp_ipackets;
1634 stats->pkts_out = s.p.ppp_opackets;
1640 * set_filters - transfer the pass and active filters to the kernel.
1643 set_filters(pass, active)
1644 struct bpf_program *pass, *active;
1648 if (pass->bf_len > 0) {
1649 if (strioctl(pppfd, PPPIO_PASSFILT, pass,
1650 sizeof(struct bpf_program), 0) < 0) {
1651 error("Couldn't set pass-filter in kernel: %m");
1655 if (active->bf_len > 0) {
1656 if (strioctl(pppfd, PPPIO_ACTIVEFILT, active,
1657 sizeof(struct bpf_program), 0) < 0) {
1658 error("Couldn't set active-filter in kernel: %m");
1667 * ccp_fatal_error - returns 1 if decompression was disabled as a
1668 * result of an error detected after decompression of a packet,
1669 * 0 otherwise. This is necessary because of patent nonsense.
1672 ccp_fatal_error(unit)
1678 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1679 if (errno != ENXIO && errno != EINVAL)
1680 error("Couldn't get compression flags: %m");
1683 return cf[0] & CCP_FATALERROR;
1687 * sifvjcomp - config tcp header compression
1690 sifvjcomp(u, vjcomp, xcidcomp, xmaxcid)
1691 int u, vjcomp, xcidcomp, xmaxcid;
1697 maxcid[0] = xcidcomp;
1698 maxcid[1] = 15; /* XXX should be rmaxcid */
1699 if (strioctl(pppfd, PPPIO_VJINIT, maxcid, sizeof(maxcid), 0) < 0) {
1700 error("Couldn't initialize VJ compression: %m");
1704 cf[0] = (vjcomp? COMP_VJC + DECOMP_VJC: 0) /* XXX this is wrong */
1705 + (xcidcomp? COMP_VJCCID + DECOMP_VJCCID: 0);
1706 cf[1] = COMP_VJC + DECOMP_VJC + COMP_VJCCID + DECOMP_VJCCID;
1707 if (strioctl(pppfd, PPPIO_CFLAGS, cf, sizeof(cf), sizeof(int)) < 0) {
1709 error("Couldn't enable VJ compression: %m");
1716 * sifup - Config the interface up and enable IP packets to pass.
1724 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1725 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1726 error("Couldn't mark interface up (get): %m");
1729 ifr.ifr_flags |= IFF_UP;
1730 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1731 error("Couldn't mark interface up (set): %m");
1739 * sifdown - Config the interface down and disable IP.
1749 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1750 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) < 0) {
1751 error("Couldn't mark interface down (get): %m");
1754 ifr.ifr_flags &= ~IFF_UP;
1755 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1756 error("Couldn't mark interface down (set): %m");
1764 * sifnpmode - Set the mode for handling packets for a given NP.
1767 sifnpmode(u, proto, mode)
1775 npi[1] = (int) mode;
1776 if (strioctl(pppfd, PPPIO_NPMODE, &npi, 2 * sizeof(int), 0) < 0) {
1777 error("ioctl(set NP %d mode to %d): %m", proto, mode);
1783 #if defined(SOL2) && defined(INET6)
1785 * sif6up - Config the IPv6 interface up and enable IPv6 packets to pass.
1794 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1799 memset(&lifr, 0, sizeof(lifr));
1800 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1801 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1806 lifr.lifr_flags |= IFF_UP;
1807 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1808 if (ioctl(fd, SIOCSLIFFLAGS, &lifr) < 0) {
1819 * sifdown - Config the IPv6 interface down and disable IPv6.
1828 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1832 memset(&lifr, 0, sizeof(lifr));
1833 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1834 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1839 lifr.lifr_flags &= ~IFF_UP;
1840 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1841 if (ioctl(fd, SIOCGLIFFLAGS, &lifr) < 0) {
1852 * sif6addr - Config the interface with an IPv6 link-local address
1860 struct sockaddr_storage laddr;
1861 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&laddr;
1864 fd = socket(AF_INET6, SOCK_DGRAM, 0);
1868 memset(&lifr, 0, sizeof(lifr));
1869 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1872 * Do this because /dev/ppp responds to DL_PHYS_ADDR_REQ with
1873 * zero values, hence the interface token came to be zero too,
1874 * and without this, in.ndpd will complain
1876 IN6_LLTOKEN_FROM_EUI64(lifr, sin6, o);
1877 if (ioctl(fd, SIOCSLIFTOKEN, &lifr) < 0) {
1883 * Set the interface address and destination address
1885 IN6_LLADDR_FROM_EUI64(lifr, sin6, o);
1886 if (ioctl(fd, SIOCSLIFADDR, &lifr) < 0) {
1891 memset(&lifr, 0, sizeof(lifr));
1892 strlcpy(lifr.lifr_name, ifname, sizeof(lifr.lifr_name));
1893 IN6_LLADDR_FROM_EUI64(lifr, sin6, h);
1894 if (ioctl(fd, SIOCSLIFDSTADDR, &lifr) < 0) {
1903 * cif6addr - Remove the IPv6 address from interface
1913 #endif /* defined(SOL2) && defined(INET6) */
1916 #define INET_ADDR(x) (((struct sockaddr_in *) &(x))->sin_addr.s_addr)
1919 * sifaddr - Config the interface IP addresses and netmask.
1929 memset(&ifr, 0, sizeof(ifr));
1930 strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
1931 ifr.ifr_addr.sa_family = AF_INET;
1932 INET_ADDR(ifr.ifr_addr) = m;
1933 if (ioctl(ipfd, SIOCSIFNETMASK, &ifr) < 0) {
1934 error("Couldn't set IP netmask: %m");
1937 ifr.ifr_addr.sa_family = AF_INET;
1938 INET_ADDR(ifr.ifr_addr) = o;
1939 if (ioctl(ipfd, SIOCSIFADDR, &ifr) < 0) {
1940 error("Couldn't set local IP address: %m");
1945 * On some systems, we have to explicitly set the point-to-point
1946 * flag bit before we can set a destination address.
1948 if (ioctl(ipfd, SIOCGIFFLAGS, &ifr) >= 0
1949 && (ifr.ifr_flags & IFF_POINTOPOINT) == 0) {
1950 ifr.ifr_flags |= IFF_POINTOPOINT;
1951 if (ioctl(ipfd, SIOCSIFFLAGS, &ifr) < 0) {
1952 error("Couldn't mark interface pt-to-pt: %m");
1956 ifr.ifr_dstaddr.sa_family = AF_INET;
1957 INET_ADDR(ifr.ifr_dstaddr) = h;
1958 if (ioctl(ipfd, SIOCSIFDSTADDR, &ifr) < 0) {
1959 error("Couldn't set remote IP address: %m");
1968 * cifaddr - Clear the interface IP addresses, and delete routes
1969 * through the interface if possible.
1976 #if defined(__USLC__) /* was: #if 0 */
1977 cifroute(unit, ouraddr, hisaddr);
1979 notice("Removing ppp interface unit");
1980 if (ioctl(ipfd, I_UNLINK, ipmuxid) < 0) {
1981 error("Can't remove ppp interface unit: %m");
1992 * sifdefaultroute - assign a default route through the address given.
1995 sifdefaultroute(u, l, g)
2001 #if defined(__USLC__)
2002 g = l; /* use the local address as gateway */
2004 memset(&rt, 0, sizeof(rt));
2005 rt.rt_dst.sa_family = AF_INET;
2006 INET_ADDR(rt.rt_dst) = 0;
2007 rt.rt_gateway.sa_family = AF_INET;
2008 INET_ADDR(rt.rt_gateway) = g;
2009 rt.rt_flags = RTF_GATEWAY;
2011 if (ioctl(ipfd, SIOCADDRT, &rt) < 0) {
2012 error("Can't add default route: %m");
2016 default_route_gateway = g;
2021 * cifdefaultroute - delete a default route through the address given.
2024 cifdefaultroute(u, l, g)
2030 #if defined(__USLC__)
2031 g = l; /* use the local address as gateway */
2033 memset(&rt, 0, sizeof(rt));
2034 rt.rt_dst.sa_family = AF_INET;
2035 INET_ADDR(rt.rt_dst) = 0;
2036 rt.rt_gateway.sa_family = AF_INET;
2037 INET_ADDR(rt.rt_gateway) = g;
2038 rt.rt_flags = RTF_GATEWAY;
2040 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2041 error("Can't delete default route: %m");
2045 default_route_gateway = 0;
2050 * sifproxyarp - Make a proxy ARP entry for the peer.
2053 sifproxyarp(unit, hisaddr)
2057 struct arpreq arpreq;
2059 memset(&arpreq, 0, sizeof(arpreq));
2060 if (!get_ether_addr(hisaddr, &arpreq.arp_ha))
2063 arpreq.arp_pa.sa_family = AF_INET;
2064 INET_ADDR(arpreq.arp_pa) = hisaddr;
2065 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
2066 if (ioctl(ipfd, SIOCSARP, (caddr_t) &arpreq) < 0) {
2067 error("Couldn't set proxy ARP entry: %m");
2071 proxy_arp_addr = hisaddr;
2076 * cifproxyarp - Delete the proxy ARP entry for the peer.
2079 cifproxyarp(unit, hisaddr)
2083 struct arpreq arpreq;
2085 memset(&arpreq, 0, sizeof(arpreq));
2086 arpreq.arp_pa.sa_family = AF_INET;
2087 INET_ADDR(arpreq.arp_pa) = hisaddr;
2088 if (ioctl(ipfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
2089 error("Couldn't delete proxy ARP entry: %m");
2098 * get_ether_addr - get the hardware address of an interface on the
2099 * the same subnet as ipaddr.
2104 get_ether_addr(ipaddr, hwaddr)
2106 struct sockaddr *hwaddr;
2108 struct ifreq *ifr, *ifend, ifreq;
2111 u_int32_t ina, mask;
2114 * Scan through the system's network interfaces.
2117 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2120 ifc.ifc_len = nif * sizeof(struct ifreq);
2121 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2122 if (ifc.ifc_buf == 0)
2124 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2125 warn("Couldn't get system interface list: %m");
2129 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2130 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2131 if (ifr->ifr_addr.sa_family != AF_INET)
2134 * Check that the interface is up, and not point-to-point or loopback.
2136 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2137 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2139 if ((ifreq.ifr_flags &
2140 (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
2141 != (IFF_UP|IFF_BROADCAST))
2144 * Get its netmask and check that it's on the right subnet.
2146 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2148 ina = INET_ADDR(ifr->ifr_addr);
2149 mask = INET_ADDR(ifreq.ifr_addr);
2150 if ((ipaddr & mask) == (ina & mask))
2155 warn("No suitable interface found for proxy ARP");
2160 info("found interface %s for proxy ARP", ifr->ifr_name);
2161 if (!get_hw_addr(ifr->ifr_name, ina, hwaddr)) {
2162 error("Couldn't get hardware address for %s", ifr->ifr_name);
2172 * get_hw_addr_dlpi - obtain the hardware address using DLPI
2175 get_hw_addr_dlpi(name, hwaddr)
2177 struct sockaddr *hwaddr;
2180 int unit, iffd, adrlen;
2181 unsigned char *adrp;
2184 union DL_primitives prim;
2189 * We have to open the device and ask it for its hardware address.
2190 * First split apart the device name and unit.
2192 slprintf(ifdev, sizeof(ifdev), "/dev/%s", name);
2193 for (q = ifdev + strlen(ifdev); --q >= ifdev; )
2200 * Open the device and do a DLPI attach and phys_addr_req.
2202 iffd = open(ifdev, O_RDWR);
2204 error("Can't open %s: %m", ifdev);
2207 if (dlpi_attach(iffd, unit) < 0
2208 || dlpi_get_reply(iffd, &reply.prim, DL_OK_ACK, sizeof(reply)) < 0
2209 || dlpi_info_req(iffd) < 0
2210 || dlpi_get_reply(iffd, &reply.prim, DL_INFO_ACK, sizeof(reply)) < 0) {
2215 adrlen = reply.prim.info_ack.dl_addr_length;
2216 adrp = (unsigned char *)&reply + reply.prim.info_ack.dl_addr_offset;
2218 #if DL_CURRENT_VERSION >= 2
2219 if (reply.prim.info_ack.dl_sap_length < 0)
2220 adrlen += reply.prim.info_ack.dl_sap_length;
2222 adrp += reply.prim.info_ack.dl_sap_length;
2225 hwaddr->sa_family = AF_UNSPEC;
2226 memcpy(hwaddr->sa_data, adrp, adrlen);
2231 * get_hw_addr - obtain the hardware address for a named interface.
2234 get_hw_addr(name, ina, hwaddr)
2237 struct sockaddr *hwaddr;
2239 /* New way - get the address by doing an arp request. */
2243 s = socket(AF_INET, SOCK_DGRAM, 0);
2246 memset(&req, 0, sizeof(req));
2247 req.arp_pa.sa_family = AF_INET;
2248 INET_ADDR(req.arp_pa) = ina;
2249 if (ioctl(s, SIOCGARP, &req) < 0) {
2250 error("Couldn't get ARP entry for %s: %m", ip_ntoa(ina));
2253 *hwaddr = req.arp_ha;
2254 hwaddr->sa_family = AF_UNSPEC;
2260 dlpi_attach(fd, ppa)
2263 dl_attach_req_t req;
2266 req.dl_primitive = DL_ATTACH_REQ;
2268 buf.len = sizeof(req);
2269 buf.buf = (void *) &req;
2270 return putmsg(fd, &buf, NULL, RS_HIPRI);
2280 req.dl_primitive = DL_INFO_REQ;
2281 buf.len = sizeof(req);
2282 buf.buf = (void *) &req;
2283 return putmsg(fd, &buf, NULL, RS_HIPRI);
2287 dlpi_get_reply(fd, reply, expected_prim, maxlen)
2288 union DL_primitives *reply;
2289 int fd, expected_prim, maxlen;
2296 * Use poll to wait for a message with a timeout.
2299 pfd.events = POLLIN | POLLPRI;
2301 n = poll(&pfd, 1, 1000);
2302 } while (n == -1 && errno == EINTR);
2309 buf.maxlen = maxlen;
2310 buf.buf = (void *) reply;
2312 if (getmsg(fd, &buf, NULL, &flags) < 0)
2315 if (buf.len < sizeof(ulong)) {
2317 dbglog("dlpi response short (len=%d)\n", buf.len);
2321 if (reply->dl_primitive == expected_prim)
2325 if (reply->dl_primitive == DL_ERROR_ACK) {
2326 dbglog("dlpi error %d (unix errno %d) for prim %x\n",
2327 reply->error_ack.dl_errno, reply->error_ack.dl_unix_errno,
2328 reply->error_ack.dl_error_primitive);
2330 dbglog("dlpi unexpected response prim %x\n",
2331 reply->dl_primitive);
2339 * Return user specified netmask, modified by any mask we might determine
2340 * for address `addr' (in network byte order).
2341 * Here we scan through the system's list of interfaces, looking for
2342 * any non-point-to-point interfaces which might appear to be on the same
2343 * network as `addr'. If we find any, we OR in their netmask to the
2344 * user-specified netmask.
2350 u_int32_t mask, nmask, ina;
2351 struct ifreq *ifr, *ifend, ifreq;
2356 if (IN_CLASSA(addr)) /* determine network mask for address class */
2357 nmask = IN_CLASSA_NET;
2358 else if (IN_CLASSB(addr))
2359 nmask = IN_CLASSB_NET;
2361 nmask = IN_CLASSC_NET;
2362 /* class D nets are disallowed by bad_ip_adrs */
2363 mask = netmask | htonl(nmask);
2366 * Scan through the system's network interfaces.
2369 if (ioctl(ipfd, SIOCGIFNUM, &nif) < 0)
2372 ifc.ifc_len = nif * sizeof(struct ifreq);
2373 ifc.ifc_buf = (caddr_t) malloc(ifc.ifc_len);
2374 if (ifc.ifc_buf == 0)
2376 if (ioctl(ipfd, SIOCGIFCONF, &ifc) < 0) {
2377 warn("Couldn't get system interface list: %m");
2381 ifend = (struct ifreq *) (ifc.ifc_buf + ifc.ifc_len);
2382 for (ifr = ifc.ifc_req; ifr < ifend; ++ifr) {
2384 * Check the interface's internet address.
2386 if (ifr->ifr_addr.sa_family != AF_INET)
2388 ina = INET_ADDR(ifr->ifr_addr);
2389 if ((ntohl(ina) & nmask) != (addr & nmask))
2392 * Check that the interface is up, and not point-to-point or loopback.
2394 strlcpy(ifreq.ifr_name, ifr->ifr_name, sizeof(ifreq.ifr_name));
2395 if (ioctl(ipfd, SIOCGIFFLAGS, &ifreq) < 0)
2397 if ((ifreq.ifr_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK))
2401 * Get its netmask and OR it into our mask.
2403 if (ioctl(ipfd, SIOCGIFNETMASK, &ifreq) < 0)
2405 mask |= INET_ADDR(ifreq.ifr_addr);
2413 * logwtmp - write an accounting record to the /var/adm/wtmp file.
2416 logwtmp(line, name, host)
2417 const char *line, *name, *host;
2419 static struct utmpx utmpx;
2423 strncpy(utmpx.ut_user, name, sizeof(utmpx.ut_user));
2424 strncpy(utmpx.ut_id, ifname, sizeof(utmpx.ut_id));
2425 strncpy(utmpx.ut_line, line, sizeof(utmpx.ut_line));
2426 utmpx.ut_pid = getpid();
2427 utmpx.ut_type = USER_PROCESS;
2429 utmpx.ut_type = DEAD_PROCESS;
2431 gettimeofday(&utmpx.ut_tv, NULL);
2432 updwtmpx("/var/adm/wtmpx", &utmpx);
2436 * get_host_seed - return the serial number of this machine.
2443 if (sysinfo(SI_HW_SERIAL, buf, sizeof(buf)) < 0) {
2444 error("sysinfo: %m");
2447 return (int) strtoul(buf, NULL, 16);
2451 strioctl(fd, cmd, ptr, ilen, olen)
2452 int fd, cmd, ilen, olen;
2455 struct strioctl str;
2461 if (ioctl(fd, I_STR, &str) == -1)
2463 if (str.ic_len != olen)
2464 dbglog("strioctl: expected %d bytes, got %d for cmd %x\n",
2465 olen, str.ic_len, cmd);
2471 * lock - create a lock file for the named lock device
2474 #define LOCK_PREFIX "/var/spool/locks/LK."
2475 static char lock_file[40]; /* name of lock file created */
2485 if (stat(dev, &sbuf) < 0) {
2486 error("Can't get device number for %s: %m", dev);
2489 if ((sbuf.st_mode & S_IFMT) != S_IFCHR) {
2490 error("Can't lock %s: not a character device", dev);
2493 slprintf(lock_file, sizeof(lock_file), "%s%03d.%03d.%03d",
2494 LOCK_PREFIX, major(sbuf.st_dev),
2495 major(sbuf.st_rdev), minor(sbuf.st_rdev));
2497 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
2499 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
2500 /* Read the lock file to find out who has the device locked */
2501 n = read(fd, ascii_pid, 11);
2503 error("Can't read pid from lock file %s", lock_file);
2507 pid = atoi(ascii_pid);
2508 if (pid > 0 && kill(pid, 0) == -1 && errno == ESRCH) {
2509 /* pid no longer exists - remove the lock file */
2510 if (unlink(lock_file) == 0) {
2512 notice("Removed stale lock on %s (pid %d)",
2516 warn("Couldn't remove stale lock on %s",
2519 notice("Device %s is locked by pid %d",
2524 error("Can't create lock file %s: %m", lock_file);
2529 slprintf(ascii_pid, sizeof(ascii_pid), "%10d\n", getpid());
2530 write(fd, ascii_pid, 11);
2537 * unlock - remove our lockfile
2550 * cifroute - delete a route through the addresses given.
2553 cifroute(u, our, his)
2559 memset(&rt, 0, sizeof(rt));
2560 rt.rt_dst.sa_family = AF_INET;
2561 INET_ADDR(rt.rt_dst) = his;
2562 rt.rt_gateway.sa_family = AF_INET;
2563 INET_ADDR(rt.rt_gateway) = our;
2564 rt.rt_flags = RTF_HOST;
2566 if (ioctl(ipfd, SIOCDELRT, &rt) < 0) {
2567 error("Can't delete route: %m");
2575 * have_route_to - determine if the system has a route to the specified
2576 * IP address. Returns 0 if not, 1 if so, -1 if we can't tell.
2577 * `addr' is in network byte order.
2578 * For demand mode to work properly, we have to ignore routes
2579 * through our own interface.
2581 #ifndef T_CURRENT /* needed for Solaris 2.5 */
2582 #define T_CURRENT MI_T_CURRENT
2590 int fd, r, flags, i;
2592 struct T_optmgmt_req req;
2596 struct T_optmgmt_ack ack;
2597 unsigned char space[64];
2600 struct strbuf cbuf, dbuf;
2602 mib2_ipRouteEntry_t routes[8];
2603 mib2_ipRouteEntry_t *rp;
2605 fd = open(mux_dev_name, O_RDWR);
2607 warn("have_route_to: couldn't open %s: %m", mux_dev_name);
2611 req.req.PRIM_type = T_OPTMGMT_REQ;
2612 req.req.OPT_offset = (char *) &req.hdr - (char *) &req;
2613 req.req.OPT_length = sizeof(req.hdr);
2614 req.req.MGMT_flags = T_CURRENT;
2616 req.hdr.level = MIB2_IP;
2620 cbuf.buf = (char *) &req;
2621 cbuf.len = sizeof(req);
2623 if (putmsg(fd, &cbuf, NULL, 0) == -1) {
2624 warn("have_route_to: putmsg: %m");
2630 cbuf.buf = (char *) &ack;
2631 cbuf.maxlen = sizeof(ack);
2632 dbuf.buf = (char *) routes;
2633 dbuf.maxlen = sizeof(routes);
2635 r = getmsg(fd, &cbuf, &dbuf, &flags);
2637 warn("have_route_to: getmsg: %m");
2642 if (cbuf.len < sizeof(struct T_optmgmt_ack)
2643 || ack.ack.PRIM_type != T_OPTMGMT_ACK
2644 || ack.ack.MGMT_flags != T_SUCCESS
2645 || ack.ack.OPT_length < sizeof(struct opthdr)) {
2646 dbglog("have_route_to: bad message len=%d prim=%d",
2647 cbuf.len, ack.ack.PRIM_type);
2652 rh = (struct opthdr *) ((char *)&ack + ack.ack.OPT_offset);
2653 if (rh->level == 0 && rh->name == 0)
2655 if (rh->level != MIB2_IP || rh->name != MIB2_IP_21) {
2656 while (r == MOREDATA)
2657 r = getmsg(fd, NULL, &dbuf, &flags);
2662 nroutes = dbuf.len / sizeof(mib2_ipRouteEntry_t);
2663 for (rp = routes, i = 0; i < nroutes; ++i, ++rp) {
2664 if (rp->ipRouteMask != ~0) {
2665 dbglog("have_route_to: dest=%x gw=%x mask=%x\n",
2666 rp->ipRouteDest, rp->ipRouteNextHop,
2668 if (((addr ^ rp->ipRouteDest) & rp->ipRouteMask) == 0
2669 && rp->ipRouteNextHop != remote_addr)
2675 r = getmsg(fd, NULL, &dbuf, &flags);
2686 * get_pty - get a pty master/slave pair and chown the slave side to
2687 * the uid given. Assumes slave_name points to MAXPATHLEN bytes of space.
2690 get_pty(master_fdp, slave_fdp, slave_name, uid)
2698 struct termios tios;
2700 mfd = open("/dev/ptmx", O_RDWR);
2702 error("Couldn't open pty master: %m");
2706 pty_name = ptsname(mfd);
2707 if (pty_name == NULL) {
2708 error("Couldn't get name of pty slave");
2712 if (chown(pty_name, uid, -1) < 0)
2713 warn("Couldn't change owner of pty slave: %m");
2714 if (chmod(pty_name, S_IRUSR | S_IWUSR) < 0)
2715 warn("Couldn't change permissions on pty slave: %m");
2716 if (unlockpt(mfd) < 0)
2717 warn("Couldn't unlock pty slave: %m");
2719 sfd = open(pty_name, O_RDWR);
2721 error("Couldn't open pty slave %s: %m", pty_name);
2725 if (ioctl(sfd, I_PUSH, "ptem") < 0)
2726 warn("Couldn't push ptem module on pty slave: %m");
2728 dbglog("Using %s", pty_name);
2729 strlcpy(slave_name, pty_name, MAXPATHLEN);