2 * sys-aix4.c - System-dependent procedures for setting up
3 * PPP interfaces on AIX systems which use the STREAMS ppp interface.
5 * Copyright (c) 1989 Carnegie Mellon University.
8 * Redistribution and use in source and binary forms are permitted
9 * provided that the above copyright notice and this paragraph are
10 * duplicated in all such forms and that any documentation,
11 * advertising materials, and other materials related to such
12 * distribution and use acknowledge that the software was developed
13 * by Carnegie Mellon University. The name of the
14 * University may not be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
18 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 static char rcsid[] = "$Id: sys-aix4.c,v 1.2 1995/04/24 05:33:43 paulus Exp $";
34 #include <sys/termiox.h>
40 #include <sys/types.h>
41 #include <sys/socket.h>
43 #include <sys/stream.h>
44 #include <sys/stropts.h>
47 #include <net/ppp_defs.h>
48 #include <net/ppp_str.h>
49 #include <net/route.h>
50 #include <net/if_arp.h>
51 #include <netinet/in.h>
56 #define ifr_mtu ifr_metric
59 #define MAXMODULES 10 /* max number of module names to save */
60 static struct modlist {
61 char modname[FMNAMESZ+1];
62 } str_modules[MAXMODULES];
63 static int str_module_count = 0;
64 static int pushed_ppp;
65 static int closed_stdio;
67 static int restore_term; /* 1 => we've munged the terminal */
68 static struct termios inittermios; /* Initial TTY termios */
70 int sockfd; /* socket for doing interface ioctls */
73 * sys_init - System-dependent initialization.
78 openlog("pppd", LOG_PID | LOG_NDELAY, LOG_PPP);
79 setlogmask(LOG_UPTO(LOG_INFO));
81 setlogmask(LOG_UPTO(LOG_DEBUG));
83 /* Get an internet socket for doing socket ioctl's on. */
84 if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
85 syslog(LOG_ERR, "Couldn't create IP socket: %m");
91 * note_debug_level - note a change in the debug level.
97 syslog(LOG_INFO, "Debug turned ON, Level %d", debug);
98 setlogmask(LOG_UPTO(LOG_DEBUG));
100 setlogmask(LOG_UPTO(LOG_WARNING));
105 * daemon - Detach us from the terminal session.
108 daemon(nochdir, noclose)
109 int nochdir, noclose;
113 if ((pid = fork()) < 0)
116 exit(0); /* parent dies */
121 fclose(stdin); /* don't need stdin, stdout, stderr */
130 * ppp_available - check if this kernel supports PPP.
137 fd = open("/dev/tty", O_RDONLY, 0);
139 return 1; /* can't find out - assume we have ppp */
140 ret = ioctl(fd, I_FIND, "pppasync") >= 0;
147 * establish_ppp - Turn the serial port into a ppp interface.
152 /* go through and save the name of all the modules, then pop em */
154 if (ioctl(fd, I_LOOK, str_modules[str_module_count].modname) < 0 ||
155 ioctl(fd, I_POP, 0) < 0)
157 MAINDEBUG((LOG_DEBUG, "popped stream module : %s",
158 str_modules[str_module_count].modname));
162 /* now push the async/fcs module */
163 if (ioctl(fd, I_PUSH, "pppasync") < 0) {
164 syslog(LOG_ERR, "ioctl(I_PUSH, ppp_async): %m");
167 /* push the compress module */
168 if (ioctl(fd, I_PUSH, "pppcomp") < 0) {
169 syslog(LOG_WARNING, "ioctl(I_PUSH, ppp_comp): %m");
171 /* finally, push the ppp_if module that actually handles the */
172 /* network interface */
173 if (ioctl(fd, I_PUSH, "pppif") < 0) {
174 syslog(LOG_ERR, "ioctl(I_PUSH, ppp_if): %m");
178 /* read mode, message non-discard mode
179 if (ioctl(fd, I_SRDOPT, RMSGN) < 0) {
180 syslog(LOG_ERR, "ioctl(I_SRDOPT, RMSGN): %m");
185 * Find out which interface we were given.
186 * (ppp_if handles this ioctl)
188 if (ioctl(fd, SIOCGETU, &ifunit) < 0) {
189 syslog(LOG_ERR, "ioctl(SIOCGETU): %m");
193 /* Set debug flags in driver */
194 if (ioctl(fd, SIOCSIFDEBUG, kdebugflag) < 0) {
195 syslog(LOG_ERR, "ioctl(SIOCSIFDEBUG): %m");
198 /* close stdin, stdout, stderr if they might refer to the device */
199 if (default_device && !closed_stdio) {
202 for (i = 0; i <= 2; ++i)
203 if (i != fd && i != s)
210 * disestablish_ppp - Restore the serial port to normal operation.
211 * It attempts to reconstruct the stream with the previously popped
212 * modules. This shouldn't call die() because it's called from die().
221 /* we can't push or pop modules after the stream has hung up */
222 str_module_count = 0;
223 restore_term = 0; /* nor can we fix up terminal settings */
229 * Check whether the link seems not to be 8-bit clean.
231 if (ioctl(fd, SIOCGIFDEBUG, (caddr_t) &flags) == 0) {
233 switch (~flags & PAI_FLAGS_HIBITS) {
235 s = "bit 7 set to 1";
238 s = "bit 7 set to 0";
240 case PAI_FLAGS_PAR_EVEN:
243 case PAI_FLAGS_PAR_ODD:
248 syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
249 syslog(LOG_WARNING, "All received characters had %s", s);
254 while (ioctl(fd, I_POP, 0) == 0) /* pop any we pushed */
258 for (; str_module_count > 0; str_module_count--) {
259 if (ioctl(fd, I_PUSH, str_modules[str_module_count-1].modname)) {
261 syslog(LOG_WARNING, "str_restore: couldn't push module %s: %m",
262 str_modules[str_module_count-1].modname);
264 MAINDEBUG((LOG_INFO, "str_restore: pushed module %s",
265 str_modules[str_module_count-1].modname));
272 * List of valid speeds.
275 int speed_int, speed_val;
347 * Translate from bits/second to a speed_t.
353 struct speed *speedp;
357 for (speedp = speeds; speedp->speed_int; speedp++)
358 if (bps == speedp->speed_int)
359 return speedp->speed_val;
360 syslog(LOG_WARNING, "speed %d not supported", bps);
365 * Translate from a speed_t to bits/second.
371 struct speed *speedp;
375 for (speedp = speeds; speedp->speed_int; speedp++)
376 if (speed == speedp->speed_val)
377 return speedp->speed_int;
382 * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
383 * at the requested speed, etc. If `local' is true, set CLOCAL
384 * regardless of whether the modem option was specified.
386 set_up_tty(fd, local)
393 if (tcgetattr(fd, &tios) < 0) {
394 syslog(LOG_ERR, "tcgetattr: %m");
401 tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
403 bzero(&tiox, sizeof(tiox));
404 ioctl(fd, TCGETX, &tiox);
405 tiox.x_hflag = RTSXOFF;
406 ioctl(fd, TCSETX, &tiox);
407 tios.c_cflag &= ~(IXOFF);
408 } else if (crtscts < 0) {
409 bzero(&tiox, sizeof(tiox));
410 ioctl(fd, TCGETX, &tiox);
411 tiox.x_hflag &= ~RTSXOFF;
412 ioctl(fd, TCSETX, &tiox);
416 tios.c_cflag |= CS8 | CREAD | HUPCL;
418 tios.c_cflag |= CLOCAL;
419 tios.c_iflag = IGNBRK | IGNPAR;
423 tios.c_cc[VTIME] = 0;
426 tios.c_iflag |= IXOFF;
427 tios.c_cc[VSTOP] = 0x13; /* DC3 = XOFF = ^S */
428 tios.c_cc[VSTART] = 0x11; /* DC1 = XON = ^Q */
431 speed = translate_speed(inspeed);
433 cfsetospeed(&tios, speed);
434 cfsetispeed(&tios, speed);
436 speed = cfgetospeed(&tios);
438 * We can't proceed if the serial port speed is B0,
439 * since that implies that the serial port is disabled.
442 syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
448 if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
449 syslog(LOG_ERR, "tcsetattr: %m");
453 baud_rate = inspeed = baud_rate_of(speed);
458 * restore_tty - restore the terminal to the saved settings.
464 if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
466 syslog(LOG_WARNING, "tcsetattr: %m");
472 * setdtr - control the DTR line on the serial port.
473 * This is called from die(), so it shouldn't call die().
478 int modembits = TIOCM_DTR;
480 ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
485 * output - Output PPP packet.
496 MAINDEBUG((LOG_WARNING, "output: unit != 0!"));
498 log_packet(p, len, "sent ");
501 str.buf = (caddr_t) p;
502 if (putmsg(fd, NULL, &str, 0) < 0) {
503 if (errno != ENXIO) {
504 syslog(LOG_ERR, "putmsg: %m");
511 * wait_input - wait for input, for a length of time specified in *timo.
514 struct timeval *timo;
519 t = timo == NULL? -1: timo->tv_sec * 1000 + timo->tv_usec / 1000;
521 pfd.events = POLLIN | POLLPRI | POLLHUP;
522 if (poll(&pfd, 1, t) < 0 && errno != EINTR) {
523 syslog(LOG_ERR, "poll: %m");
529 * read_packet - get a PPP packet from the serial device.
535 struct strbuf str, ctl;
537 unsigned char ctlbuf[16];
539 str.maxlen = PPP_MTU + PPP_HDRLEN;
540 str.buf = (caddr_t) buf;
541 ctl.maxlen = sizeof(ctlbuf);
542 ctl.buf = (caddr_t) ctlbuf;
544 len = getmsg(fd, &ctl, &str, &i);
546 if (errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR) {
549 syslog(LOG_ERR, "getmsg(fd) %m");
553 MAINDEBUG((LOG_DEBUG, "getmsg returned 0x%x",len));
555 syslog(LOG_NOTICE, "got ctrl msg len %d %x %x\n", ctl.len,
556 ctlbuf[0], ctlbuf[1]);
559 MAINDEBUG((LOG_DEBUG, "getmsg short return length %d", str.len));
568 * ppp_send_config - configure the transmit characteristics of
572 ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
580 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
582 if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
583 syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
587 if(ioctl(fd, SIOCSIFASYNCMAP, asyncmap) < 0) {
588 syslog(LOG_ERR, "ioctl(SIOCSIFASYNCMAP): %m");
593 if(ioctl(fd, SIOCSIFCOMPPROT, c) < 0) {
594 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPPROT): %m");
599 if(ioctl(fd, SIOCSIFCOMPAC, c) < 0) {
600 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPAC): %m");
607 * ppp_set_xaccm - set the extended transmit ACCM for the interface.
610 ppp_set_xaccm(unit, accm)
614 if (ioctl(fd, SIOCSIFXASYNCMAP, accm) < 0 && errno != ENOTTY)
615 syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
620 * ppp_recv_config - configure the receive-side characteristics of
624 ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
631 if (ioctl(fd, SIOCSIFMRU, mru) < 0) {
632 syslog(LOG_ERR, "ioctl(SIOCSIFMRU): %m");
635 if (ioctl(fd, SIOCSIFRASYNCMAP, (caddr_t) asyncmap) < 0) {
636 syslog(LOG_ERR, "ioctl(SIOCSIFRASYNCMAP): %m");
639 c = 2 + (pcomp? 1: 0);
640 if(ioctl(fd, SIOCSIFCOMPPROT, c) < 0) {
641 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPPROT): %m");
644 c = 2 + (accomp? 1: 0);
645 if (ioctl(fd, SIOCSIFCOMPAC, c) < 0) {
646 syslog(LOG_ERR, "ioctl(SIOCSIFCOMPAC): %m");
651 * ccp_test - ask kernel whether a given compression method
652 * is acceptable for use.
654 ccp_test(unit, opt_ptr, opt_len, for_transmit)
655 int unit, opt_len, for_transmit;
658 struct ppp_option_data data;
660 if ((unsigned) opt_len > MAX_PPP_OPTION)
661 opt_len = MAX_PPP_OPTION;
662 data.length = opt_len;
663 data.transmit = for_transmit;
664 BCOPY(opt_ptr, data.opt_data, opt_len);
665 return ioctl(fd, SIOCSCOMPRESS, &data) >= 0;
669 * ccp_flags_set - inform kernel about the current state of CCP.
672 ccp_flags_set(unit, isopen, isup)
673 int unit, isopen, isup;
677 x = (isopen? 1: 0) + (isup? 2: 0);
678 if (ioctl(fd, SIOCSIFCOMP, x) < 0 && errno != ENOTTY)
679 syslog(LOG_ERR, "ioctl (SIOCSIFCOMP): %m");
683 * ccp_fatal_error - returns 1 if decompression was disabled as a
684 * result of an error detected after decompression of a packet,
685 * 0 otherwise. This is necessary because of patent nonsense.
688 ccp_fatal_error(unit)
693 if (ioctl(fd, SIOCGIFCOMP, &x) < 0) {
694 syslog(LOG_ERR, "ioctl(SIOCGIFCOMP): %m");
697 return x & CCP_FATALERROR;
701 * sifvjcomp - config tcp header compression
704 sifvjcomp(u, vjcomp, cidcomp, maxcid)
705 int u, vjcomp, cidcomp, maxcid;
709 x = (vjcomp? 1: 0) + (cidcomp? 0: 2) + (maxcid << 4);
710 if (ioctl(fd, SIOCSIFVJCOMP, x) < 0) {
711 syslog(LOG_ERR, "ioctl(SIOCSIFVJCOMP): %m");
718 * sifup - Config the interface up and enable IP packets to pass.
727 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
728 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
729 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
732 ifr.ifr_flags |= IFF_UP;
733 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
734 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
737 npi.protocol = PPP_IP;
738 npi.mode = NPMODE_PASS;
739 if (ioctl(fd, SIOCSETNPMODE, &npi) < 0) {
740 if (errno != ENOTTY) {
741 syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m");
750 * sifdown - Config the interface down.
761 npi.protocol = PPP_IP;
762 npi.mode = NPMODE_ERROR;
763 if (ioctl(fd, SIOCSETNPMODE, &npi) < 0) {
764 if (errno != ENOTTY) {
765 syslog(LOG_ERR, "ioctl(SIOCSETNPMODE): %m");
770 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
771 if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
772 syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
775 ifr.ifr_flags &= ~IFF_UP;
776 if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
777 syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
785 * SET_SA_FAMILY - initialize a struct sockaddr, setting the sa_family field.
787 #define SET_SA_FAMILY(addr, family) \
788 BZERO((char *) &(addr), sizeof(addr)); \
789 addr.sa_family = (family);
792 * sifaddr - Config the interface IP addresses and netmask.
803 strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
804 SET_SA_FAMILY(ifr.ifr_addr, AF_INET);
806 syslog(LOG_INFO, "Setting interface mask to %s\n", ip_ntoa(m));
807 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = m;
808 if (ioctl(sockfd, SIOCSIFNETMASK, (caddr_t) &ifr) < 0) {
809 syslog(LOG_ERR, "ioctl(SIOCSIFNETMASK): %m");
814 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
815 if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
816 syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
820 SET_SA_FAMILY(ifr.ifr_dstaddr, AF_INET);
821 ((struct sockaddr_in *) &ifr.ifr_dstaddr)->sin_addr.s_addr = h;
822 if (ioctl(sockfd, SIOCSIFDSTADDR, (caddr_t) &ifr) < 0) {
823 syslog(LOG_ERR, "ioctl(SIOCSIFDSTADDR): %m");
826 ((struct sockaddr_in *) &ifr.ifr_addr)->sin_addr.s_addr = o;
827 if (ioctl(sockfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) {
828 syslog(LOG_ERR, "ioctl(SIOCSIFADDR): %m");
835 * cifaddr - Clear the interface IP addresses, and delete routes
836 * through the interface if possible.
845 SET_SA_FAMILY(rt.rt_dst, AF_INET);
846 ((struct sockaddr_in *) &rt.rt_dst)->sin_addr.s_addr = h;
847 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
848 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = o;
849 rt.rt_flags = RTF_HOST;
850 if (ioctl(sockfd, SIOCDELRT, (caddr_t) &rt) < 0) {
851 syslog(LOG_ERR, "ioctl(SIOCDELRT): %m");
858 * sifdefaultroute - assign a default route through the address given.
861 sifdefaultroute(u, g)
867 SET_SA_FAMILY(rt.rt_dst, AF_INET);
868 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
869 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
870 rt.rt_flags = RTF_GATEWAY;
871 if (ioctl(sockfd, SIOCADDRT, &rt) < 0) {
872 syslog(LOG_ERR, "default route ioctl(SIOCADDRT): %m");
879 * cifdefaultroute - delete a default route through the address given.
882 cifdefaultroute(u, g)
888 SET_SA_FAMILY(rt.rt_dst, AF_INET);
889 SET_SA_FAMILY(rt.rt_gateway, AF_INET);
890 ((struct sockaddr_in *) &rt.rt_gateway)->sin_addr.s_addr = g;
891 rt.rt_flags = RTF_GATEWAY;
892 if (ioctl(sockfd, SIOCDELRT, &rt) < 0) {
893 syslog(LOG_ERR, "default route ioctl(SIOCDELRT): %m");
900 * sifproxyarp - Make a proxy ARP entry for the peer.
903 sifproxyarp(unit, hisaddr)
907 struct arpreq arpreq;
909 BZERO(&arpreq, sizeof(arpreq));
912 * Get the hardware address of an interface on the same subnet
913 * as our local address.
915 if (!get_ether_addr(hisaddr, &arpreq.arp_ha)) {
916 syslog(LOG_WARNING, "Cannot determine ethernet address for proxy ARP");
920 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
921 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
922 arpreq.arp_flags = ATF_PERM | ATF_PUBL;
923 if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
924 syslog(LOG_ERR, "ioctl(SIOCSARP): %m");
932 * cifproxyarp - Delete the proxy ARP entry for the peer.
935 cifproxyarp(unit, hisaddr)
939 struct arpreq arpreq;
941 BZERO(&arpreq, sizeof(arpreq));
942 SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
943 ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
944 if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
945 syslog(LOG_ERR, "ioctl(SIOCDARP): %m");
952 * get_ether_addr - get the hardware address of an interface on the
953 * the same subnet as ipaddr. Code borrowed from myetheraddr.c
954 * in the cslip-2.6 distribution, which is subject to the following
955 * copyright notice (which also applies to logwtmp below):
957 * Copyright (c) 1990, 1992 The Regents of the University of California.
958 * All rights reserved.
960 * Redistribution and use in source and binary forms, with or without
961 * modification, are permitted provided that: (1) source code distributions
962 * retain the above copyright notice and this paragraph in its entirety, (2)
963 * distributions including binary code include the above copyright notice and
964 * this paragraph in its entirety in the documentation or other materials
965 * provided with the distribution, and (3) all advertising materials mentioning
966 * features or use of this software display the following acknowledgement:
967 * ``This product includes software developed by the University of California,
968 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
969 * the University nor the names of its contributors may be used to endorse
970 * or promote products derived from this software without specific prior
971 * written permission.
972 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
973 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
974 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
978 #include <arpa/inet.h>
979 #include <netinet/in_var.h>
980 #include <net/if_dl.h>
982 /* Cast a struct sockaddr to a structaddr_in */
983 #define SATOSIN(sa) ((struct sockaddr_in *)(sa))
985 /* Determine if "bits" is set in "flag" */
986 #define ALLSET(flag, bits) (((flag) & (bits)) == (bits))
988 static struct nlist nl[] = {
994 int kvm_read(int fd, off_t offset, void *buf, int nbytes)
996 if (lseek(fd, offset, SEEK_SET) != offset) {
997 syslog(LOG_ERR,"lseek in kmem: %m");
1000 return(read(fd, buf, nbytes));
1004 get_ether_addr(ipaddr, hwaddr)
1006 struct sockaddr *hwaddr;
1009 register struct ifnet *ifp;
1010 register struct arpcom *ac;
1011 struct arpcom arpcom;
1012 struct in_addr *inp;
1013 register struct ifaddr *ifa;
1014 register struct in_ifaddr *in;
1017 struct in_ifaddr in;
1019 struct ifaddr *ifap;
1020 struct sockaddr ifaddrsaddr;
1021 struct sockaddr_in ifmasksaddr;
1022 struct sockaddr_in *ifinetptr;
1023 struct sockaddr_dl *iflinkptr;
1024 u_long addr, mask, ifip;
1027 /* Open kernel memory for reading */
1028 if ((kd = open("/dev/kmem", O_RDONLY)) < 0) {
1029 syslog(LOG_ERR, "/dev/kmem: %m");
1033 /* Fetch namelist */
1034 if (nlist("/unix", nl) != 0) {
1035 syslog(LOG_ERR, "nlist(): %m");
1040 ifp = &arpcom.ac_if;
1044 if (kvm_read(kd, nl[N_IFNET].n_value, (char *)&addr, sizeof(addr))
1046 syslog(LOG_ERR, "error reading ifnet addr");
1049 for ( ; addr && !found; addr = (u_long)ifp->if_next) {
1050 if (kvm_read(kd, addr, (char *)ac, sizeof(*ac)) != sizeof(*ac)) {
1051 syslog(LOG_ERR, "error reading ifnet");
1055 /* Only look at configured, broadcast interfaces */
1056 if (!ALLSET(ifp->if_flags, IFF_UP | IFF_BROADCAST))
1058 /* This probably can't happen... */
1059 if (ifp->if_addrlist == 0)
1062 /* Get interface ip address */
1063 for (ifap = ifp->if_addrlist; ifap; ifap=ifaddr.ifa.ifa_next) {
1064 if (kvm_read(kd, (u_long)ifap, (char *)&ifaddr,
1065 sizeof(ifaddr)) != sizeof(ifaddr)) {
1066 syslog(LOG_ERR, "error reading ifaddr");
1069 if (kvm_read(kd, (u_long)ifaddr.ifa.ifa_addr, &ifaddrsaddr,
1070 sizeof(struct sockaddr_in)) != sizeof(struct sockaddr_in)) {
1071 syslog(LOG_ERR, "error reading ifaddrsaddr");
1074 if (kvm_read(kd, (u_long)ifaddr.ifa.ifa_netmask, &ifmasksaddr,
1075 sizeof(struct sockaddr_in)) != sizeof(struct sockaddr_in)) {
1076 syslog(LOG_ERR, "error reading ifmasksaddr");
1079 /* Check if this interface on the right subnet */
1080 switch (ifaddrsaddr.sa_family) {
1082 hwaddr->sa_family = AF_UNSPEC;
1083 iflinkptr = (struct sockaddr_dl *) &ifaddrsaddr;
1084 bcopy(LLADDR(iflinkptr),hwaddr->sa_data,iflinkptr->sdl_alen);
1087 ifinetptr= (struct sockaddr_in *) &ifaddrsaddr;
1088 ifip = ifinetptr->sin_addr.s_addr;
1089 if (kvm_read(kd, (u_long)ifaddr.ifa.ifa_netmask, &ifmasksaddr,
1090 sizeof(struct sockaddr_in)) != sizeof(struct sockaddr_in)) {
1091 syslog(LOG_ERR, "error reading ifmasksaddr");
1094 mask = ifmasksaddr.sin_addr.s_addr;
1095 if ((ipaddr & mask) == (ifip & mask))
1107 #define WTMPFILE "/var/adm/wtmp"
1110 logwtmp(line, name, host)
1111 char *line, *name, *host;
1117 if ((fd = open(WTMPFILE, O_WRONLY|O_APPEND, 0)) < 0)
1119 if (!fstat(fd, &buf)) {
1120 (void)strncpy(ut.ut_line, line, sizeof(ut.ut_line));
1121 (void)strncpy(ut.ut_name, name, sizeof(ut.ut_name));
1122 (void)strncpy(ut.ut_host, host, sizeof(ut.ut_host));
1123 (void)time(&ut.ut_time);
1124 if (write(fd, (char *)&ut, sizeof(struct utmp)) != sizeof(struct utmp))
1125 (void)ftruncate(fd, buf.st_size);
1131 * Code for locking/unlocking the serial device.
1132 * This code is derived from chat.c.
1138 # define LOCK_PREFIX "/usr/spool/locks/LCK.."
1140 # define LOCK_PREFIX "/usr/spool/uucp/LCK.."
1142 #endif /* LOCK_DIR */
1145 * lock - create a lock file for the named device.
1151 char hdb_lock_buffer[12];
1155 if ((p = strrchr(dev, '/')) != NULL)
1157 lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
1158 if (lock_file == NULL)
1159 novm("lock file name");
1160 strcat(strcpy(lock_file, LOCK_PREFIX), dev);
1162 while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
1164 && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
1165 /* Read the lock file to find out who has the device locked */
1167 n = read(fd, hdb_lock_buffer, 11);
1169 hdb_lock_buffer[n] = 0;
1170 pid = atoi(hdb_lock_buffer);
1173 n = read(fd, &pid, sizeof(pid));
1176 syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
1179 if (kill(pid, 0) == -1 && errno == ESRCH) {
1180 /* pid no longer exists - remove the lock file */
1181 if (unlink(lock_file) == 0) {
1183 syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
1187 syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
1190 syslog(LOG_NOTICE, "Device %s is locked by pid %d",
1195 syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
1202 sprintf(hdb_lock_buffer, "%10d\n", getpid());
1203 write(fd, hdb_lock_buffer, 11);
1206 write(fd, &pid, sizeof pid);
1214 * Remove our lockfile