Remove if_ppp(4) and if_sl(4).

Not only did these two drivers depend on IFF_NEEDSGIANT, they were
broken 7 months ago during the MPSAFE TTY import. if_ppp(4) has been
replaced by ppp(8). There is no replacement for if_sl(4).

If we see regressions in for example the ports tree, we should just use
__FreeBSD_version 800045 to check whether if_ppp(4) and if_sl(4) are
present. Version 800045 is used to denote the import of MPSAFE TTY.

Discussed with: rwatson, but also rwatson's IFF_NEEDSGIANT emails on the
                lists.

1 files changed, 0 insertions, 1697 deletions

diff --git a/usr.sbin/pppd/sys-bsd.c b/usr.sbin/pppd/sys-bsd.c
deleted file mode 100644
index cbde7a4..0000000
--- a/usr.sbin/pppd/sys-bsd.c
+++ /dev/null
@@ -1,1697 +0,0 @@
-/*
- * sys-bsd.c - System-dependent procedures for setting up
- * PPP interfaces on bsd-4.4-ish systems (including 386BSD, NetBSD, etc.)
- *
- * Copyright (c) 1989 Carnegie Mellon University.
- * Copyright (c) 1995 The Australian National University.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Carnegie Mellon University and The Australian National University.
- * The names of the Universities may not be used to endorse or promote
- * products derived from this software without specific prior written
- * permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
-/*	$NetBSD: sys-bsd.c,v 1.1.1.3 1997/09/26 18:53:04 christos Exp $	*/
-
-/*
- * TODO:
- */
-
-#include <stdio.h>
-#include <syslog.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <termios.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/stat.h>
-#include <sys/param.h>
-#include <sys/module.h>
-#ifdef NetBSD1_2
-#include <util.h>
-#endif
-#ifdef PPP_FILTER
-#include <net/bpf.h>
-#endif
-
-#include <net/if.h>
-#include <net/ppp_defs.h>
-#include <net/if_ppp.h>
-#include <net/route.h>
-#include <net/if_dl.h>
-#include <netinet/in.h>
-#include <net/if_var.h>
-#include <netinet6/in6_var.h>
-#include <netinet6/nd6.h>
-#include <ifaddrs.h>
-
-#ifdef IPX_CHANGE
-#include <netipx/ipx.h>
-#endif
-
-#if RTM_VERSION >= 3
-#include <sys/param.h>
-#if defined(NetBSD) && (NetBSD >= 199703)
-#include <netinet/if_inarp.h>
-#else	/* NetBSD 1.2D or later */
-#ifdef __FreeBSD__
-#include <netinet/if_ether.h>
-#else
-#include <net/if_ether.h>
-#endif
-#endif
-#endif
-
-#include <ifaddrs.h>
-
-#include "pppd.h"
-#include "fsm.h"
-#include "ipcp.h"
-
-static int initdisc = -1;	/* Initial TTY discipline for ppp_fd */
-static int initfdflags = -1;	/* Initial file descriptor flags for ppp_fd */
-static int ppp_fd = -1;		/* fd which is set to PPP discipline */
-static int rtm_seq;
-
-static int restore_term;	/* 1 => we've munged the terminal */
-static struct termios inittermios; /* Initial TTY termios */
-static struct winsize wsinfo;	/* Initial window size info */
-
-static char *lock_file;		/* name of lock file created */
-
-static int loop_slave = -1;
-static int loop_master;
-static char loop_name[20];
-
-static unsigned char inbuf[512]; /* buffer for chars read from loopback */
-
-static int sockfd;		/* socket for doing interface ioctls */
-#ifdef INET6
-static int sock6_fd = -1;	/* socket for doing ipv6 interface ioctls */
-#endif /* INET6 */
-
-static int if_is_up;		/* the interface is currently up */
-static u_int32_t ifaddrs[2];	/* local and remote addresses we set */
-static u_int32_t default_route_gateway;	/* gateway addr for default route */
-static u_int32_t proxy_arp_addr;	/* remote addr for proxy arp */
-
-/* Prototypes for procedures local to this file. */
-static int dodefaultroute(u_int32_t, int);
-static int get_ether_addr(u_int32_t, struct sockaddr_dl *);
-
-
-/*
- * sys_init - System-dependent initialization.
- */
-void
-sys_init()
-{
-    /* Get an internet socket for doing socket ioctl's on. */
-    if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
-	syslog(LOG_ERR, "Couldn't create IP socket: %m");
-	die(1);
-    }
-
-#ifdef INET6
-    if ((sock6_fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) {
-	/* check it at runtime */
-	sock6_fd = -1;
-    }
-#endif
-}
-
-/*
- * sys_cleanup - restore any system state we modified before exiting:
- * mark the interface down, delete default route and/or proxy arp entry.
- * This should call die() because it's called from die().
- */
-void
-sys_cleanup()
-{
-    struct ifreq ifr;
-
-    if (if_is_up) {
-	strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
-	if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) >= 0
-	    && ((ifr.ifr_flags & IFF_UP) != 0)) {
-	    ifr.ifr_flags &= ~IFF_UP;
-	    ioctl(sockfd, SIOCSIFFLAGS, &ifr);
-	}
-    }
-    if (ifaddrs[0] != 0)
-	cifaddr(0, ifaddrs[0], ifaddrs[1]);
-    if (default_route_gateway)
-	cifdefaultroute(0, 0, default_route_gateway);
-    if (proxy_arp_addr)
-	cifproxyarp(0, proxy_arp_addr);
-}
-
-/*
- * sys_close - Clean up in a child process before execing.
- */
-void
-sys_close()
-{
-    if (sockfd >= 0)
-	close(sockfd);
-#ifdef INET6
-    if (sock6_fd >= 0)
-	close(sock6_fd);
-#endif
-    if (loop_slave >= 0) {
-	close(loop_slave);
-	close(loop_master);
-    }
-}
-
-/*
- * sys_check_options - check the options that the user specified
- */
-void
-sys_check_options()
-{
-}
-
-/*
- * ppp_available - check whether the system has the ppp module loaded
- * or compiled in. If it doesn't, and we're actually root (not just SUID
- * root) try loading it before giving up.
- */
-int
-ppp_available()
-{
-    const char *modname = "if_ppp";
-    extern char *no_ppp_msg;
-
-    if (modfind(modname) != -1) {
-	return 1;
-    }
-
-    if (getuid() == 0 && kldload(modname) != -1)
-	return 1;
-
-    no_ppp_msg = "\
-This system lacks kernel support for PPP.  To include PPP support\n\
-in the kernel, please add \"device ppp\" to your kernel config or \n\
-load the if_ppp module.\n";
-
-    return 0;
-}
-
-/*
- * establish_ppp - Turn the serial port into a ppp interface.
- */
-void
-establish_ppp(fd)
-    int fd;
-{
-    int pppdisc = PPPDISC;
-    int x;
-
-    if (demand) {
-	/*
-	 * Demand mode - prime the old ppp device to relinquish the unit.
-	 */
-	if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) {
-	    syslog(LOG_ERR, "ioctl(transfer ppp unit): %m");
-	    die(1);
-	}
-    }
-
-    /*
-     * Save the old line discipline of fd, and set it to PPP.
-     */
-    if (ioctl(fd, TIOCGETD, &initdisc) < 0) {
-	syslog(LOG_ERR, "ioctl(TIOCGETD): %m");
-	die(1);
-    }
-    if (ioctl(fd, TIOCSETD, &pppdisc) < 0) {
-	syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
-	die(1);
-    }
-
-    if (!demand) {
-	/*
-	 * Find out which interface we were given.
-	 */
-	if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) {	
-	    syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
-	    die(1);
-	}
-    } else {
-	/*
-	 * Check that we got the same unit again.
-	 */
-	if (ioctl(fd, PPPIOCGUNIT, &x) < 0) {	
-	    syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
-	    die(1);
-	}
-	if (x != ifunit) {
-	    syslog(LOG_ERR, "transfer_ppp failed: wanted unit %d, got %d",
-		   ifunit, x);
-	    die(1);
-	}
-	x = TTYDISC;
-	ioctl(loop_slave, TIOCSETD, &x);
-    }
-
-    ppp_fd = fd;
-
-    /*
-     * Enable debug in the driver if requested.
-     */
-    if (kdebugflag) {
-	if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	    syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m");
-	} else {
-	    x |= (kdebugflag & 0xFF) * SC_DEBUG;
-	    if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
-		syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
-	}
-    }
-
-    /*
-     * Set device for non-blocking reads.
-     */
-    if ((initfdflags = fcntl(fd, F_GETFL)) == -1
-	|| fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) {
-	syslog(LOG_WARNING, "Couldn't set device to non-blocking mode: %m");
-    }
-}
-
-/*
- * restore_loop - reattach the ppp unit to the loopback.
- */
-void
-restore_loop()
-{
-    int x;
-
-    /*
-     * Transfer the ppp interface back to the loopback.
-     */
-    if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) {
-	syslog(LOG_ERR, "ioctl(transfer ppp unit): %m");
-	die(1);
-    }
-    x = PPPDISC;
-    if (ioctl(loop_slave, TIOCSETD, &x) < 0) {
-	syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
-	die(1);
-    }
-
-    /*
-     * Check that we got the same unit again.
-     */
-    if (ioctl(loop_slave, PPPIOCGUNIT, &x) < 0) {	
-	syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
-	die(1);
-    }
-    if (x != ifunit) {
-	syslog(LOG_ERR, "transfer_ppp failed: wanted unit %d, got %d",
-	       ifunit, x);
-	die(1);
-    }
-    ppp_fd = loop_slave;
-}
-
-
-/*
- * disestablish_ppp - Restore the serial port to normal operation.
- * This shouldn't call die() because it's called from die().
- */
-void
-disestablish_ppp(fd)
-    int fd;
-{
-    /* Reset non-blocking mode on fd. */
-    if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0)
-	syslog(LOG_WARNING, "Couldn't restore device fd flags: %m");
-    initfdflags = -1;
-
-    /* Restore old line discipline. */
-    if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0)
-	syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
-    initdisc = -1;
-
-    if (fd == ppp_fd)
-	ppp_fd = -1;
-}
-
-/*
- * Check whether the link seems not to be 8-bit clean.
- */
-void
-clean_check()
-{
-    int x;
-    char *s;
-
-    if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) == 0) {
-	s = NULL;
-	switch (~x & (SC_RCV_B7_0|SC_RCV_B7_1|SC_RCV_EVNP|SC_RCV_ODDP)) {
-	case SC_RCV_B7_0:
-	    s = "bit 7 set to 1";
-	    break;
-	case SC_RCV_B7_1:
-	    s = "bit 7 set to 0";
-	    break;
-	case SC_RCV_EVNP:
-	    s = "odd parity";
-	    break;
-	case SC_RCV_ODDP:
-	    s = "even parity";
-	    break;
-	}
-	if (s != NULL) {
-	    syslog(LOG_WARNING, "Serial link is not 8-bit clean:");
-	    syslog(LOG_WARNING, "All received characters had %s", s);
-	}
-    }
-}
-
-/*
- * set_up_tty: Set up the serial port on `fd' for 8 bits, no parity,
- * at the requested speed, etc.  If `local' is true, set CLOCAL
- * regardless of whether the modem option was specified.
- *
- * For *BSD, we assume that speed_t values numerically equal bits/second.
- */
-void
-set_up_tty(fd, local)
-    int fd, local;
-{
-    struct termios tios;
-
-    if (tcgetattr(fd, &tios) < 0) {
-	syslog(LOG_ERR, "tcgetattr: %m");
-	die(1);
-    }
-
-    if (!restore_term) {
-	inittermios = tios;
-	ioctl(fd, TIOCGWINSZ, &wsinfo);
-    }
-
-    tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL);
-    if (crtscts > 0 && !local)
-	tios.c_cflag |= CRTSCTS;
-    else if (crtscts < 0)
-	tios.c_cflag &= ~CRTSCTS;
-
-    tios.c_cflag |= CS8 | CREAD | HUPCL;
-    if (local || !modem)
-	tios.c_cflag |= CLOCAL;
-    tios.c_iflag = IGNBRK | IGNPAR;
-    tios.c_oflag = 0;
-    tios.c_lflag = 0;
-    tios.c_cc[VMIN] = 1;
-    tios.c_cc[VTIME] = 0;
-
-    if (crtscts == -2) {
-	tios.c_iflag |= IXON | IXOFF;
-	tios.c_cc[VSTOP] = 0x13;	/* DC3 = XOFF = ^S */
-	tios.c_cc[VSTART] = 0x11;	/* DC1 = XON  = ^Q */
-    }
-
-    if (inspeed) {
-	cfsetospeed(&tios, inspeed);
-	cfsetispeed(&tios, inspeed);
-    } else {
-	inspeed = cfgetospeed(&tios);
-	/*
-	 * We can't proceed if the serial port speed is 0,
-	 * since that implies that the serial port is disabled.
-	 */
-	if (inspeed == 0) {
-	    syslog(LOG_ERR, "Baud rate for %s is 0; need explicit baud rate",
-		   devnam);
-	    die(1);
-	}
-    }
-    baud_rate = inspeed;
-
-    if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) {
-	syslog(LOG_ERR, "tcsetattr: %m");
-	die(1);
-    }
-
-    restore_term = 1;
-}
-
-/*
- * restore_tty - restore the terminal to the saved settings.
- */
-void
-restore_tty(fd)
-    int fd;
-{
-    if (restore_term) {
-	if (!default_device) {
-	    /*
-	     * Turn off echoing, because otherwise we can get into
-	     * a loop with the tty and the modem echoing to each other.
-	     * We presume we are the sole user of this tty device, so
-	     * when we close it, it will revert to its defaults anyway.
-	     */
-	    inittermios.c_lflag &= ~(ECHO | ECHONL);
-	}
-	if (tcsetattr(fd, TCSAFLUSH, &inittermios) < 0)
-	    if (errno != ENXIO)
-		syslog(LOG_WARNING, "tcsetattr: %m");
-	ioctl(fd, TIOCSWINSZ, &wsinfo);
-	restore_term = 0;
-    }
-}
-
-/*
- * setdtr - control the DTR line on the serial port.
- * This is called from die(), so it shouldn't call die().
- */
-void
-setdtr(fd, on)
-int fd, on;
-{
-    int modembits = TIOCM_DTR;
-
-    ioctl(fd, (on? TIOCMBIS: TIOCMBIC), &modembits);
-}
-
-#ifdef INET6
-/*
- * sif6addr - Config the interface with an IPv6 link-local address
- */
-int
-sif6addr(int unit, eui64_t our_eui64, eui64_t his_eui64)
-{
-    int ifindex;
-    struct in6_aliasreq addreq6;
-
-    if (sock6_fd < 0) {
-	syslog(LOG_ERR, "No IPv6 socket available");
-	die(1);
-	/*NOTREACHED*/
-    }
-
-    /* actually, this part is not kame local - RFC2553 conformant */
-    ifindex = if_nametoindex(ifname);
-    if (ifindex == 0) {
-	syslog(LOG_ERR, "sifaddr6: no interface %s", ifname);
-	return 0;
-    }
-
-    memset(&addreq6, 0, sizeof(addreq6));
-    strlcpy(addreq6.ifra_name, ifname, sizeof(addreq6.ifra_name));
-
-    /* my addr */
-    addreq6.ifra_addr.sin6_family = AF_INET6;
-    addreq6.ifra_addr.sin6_len = sizeof(struct sockaddr_in6);
-    addreq6.ifra_addr.sin6_addr.s6_addr[0] = 0xfe;
-    addreq6.ifra_addr.sin6_addr.s6_addr[1] = 0x80;
-    memcpy(&addreq6.ifra_addr.sin6_addr.s6_addr[8], &our_eui64,
-	sizeof(our_eui64));
-    /* KAME ifindex hack */
-    *(u_int16_t *)&addreq6.ifra_addr.sin6_addr.s6_addr[2] = htons(ifindex);
-
-    /* his addr */
-    addreq6.ifra_dstaddr.sin6_family = AF_INET6;
-    addreq6.ifra_dstaddr.sin6_len = sizeof(struct sockaddr_in6);
-    addreq6.ifra_dstaddr.sin6_addr.s6_addr[0] = 0xfe;
-    addreq6.ifra_dstaddr.sin6_addr.s6_addr[1] = 0x80;
-    memcpy(&addreq6.ifra_dstaddr.sin6_addr.s6_addr[8], &his_eui64,
-	sizeof(our_eui64));
-    /* KAME ifindex hack */
-    *(u_int16_t *)&addreq6.ifra_dstaddr.sin6_addr.s6_addr[2] = htons(ifindex);
-
-    /* prefix mask: 128bit */
-    addreq6.ifra_prefixmask.sin6_family = AF_INET6;
-    addreq6.ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
-    memset(&addreq6.ifra_prefixmask.sin6_addr, 0xff,
-	sizeof(addreq6.ifra_prefixmask.sin6_addr));
-
-    /* address lifetime (infty) */
-    addreq6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
-    addreq6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
-
-    if (ioctl(sock6_fd, SIOCAIFADDR_IN6, &addreq6) < 0) {
-	syslog(LOG_ERR, "sif6addr: ioctl(SIOCAIFADDR_IN6): %m");
-	return 0;
-    }
-
-    return 1;
-}
-
-
-/*
- * cif6addr - Remove IPv6 address from interface
- */
-int
-cif6addr(int unit, eui64_t our_eui64, eui64_t his_eui64)
-{
-    int ifindex;
-    struct in6_ifreq delreq6;
-
-    if (sock6_fd < 0) {
-	syslog(LOG_ERR, "No IPv6 socket available");
-	die(1);
-	/*NOTREACHED*/
-    }
-
-    /* actually, this part is not kame local - RFC2553 conformant */
-    ifindex = if_nametoindex(ifname);
-    if (ifindex == 0) {
-	syslog(LOG_ERR, "cifaddr6: no interface %s", ifname);
-	return 0;
-    }
-
-    memset(&delreq6, 0, sizeof(delreq6));
-    strlcpy(delreq6.ifr_name, ifname, sizeof(delreq6.ifr_name));
-
-    /* my addr */
-    delreq6.ifr_ifru.ifru_addr.sin6_family = AF_INET6;
-    delreq6.ifr_ifru.ifru_addr.sin6_len = sizeof(struct sockaddr_in6);
-    delreq6.ifr_ifru.ifru_addr.sin6_addr.s6_addr[0] = 0xfe;
-    delreq6.ifr_ifru.ifru_addr.sin6_addr.s6_addr[1] = 0x80;
-    memcpy(&delreq6.ifr_ifru.ifru_addr.sin6_addr.s6_addr[8], &our_eui64,
-	sizeof(our_eui64));
-    /* KAME ifindex hack */
-    *(u_int16_t *)&delreq6.ifr_ifru.ifru_addr.sin6_addr.s6_addr[2] =
-	htons(ifindex);
-
-    if (ioctl(sock6_fd, SIOCDIFADDR_IN6, &delreq6) < 0) {
-	syslog(LOG_ERR, "cif6addr: ioctl(SIOCDIFADDR_IN6): %m");
-	return 0;
-    }
-
-    return 1;
-}
-#endif /* INET6 */
-
-/*
- * open_ppp_loopback - open the device we use for getting
- * packets in demand mode, and connect it to a ppp interface.
- * Here we use a pty.
- */
-void
-open_ppp_loopback()
-{
-    int flags;
-    struct termios tios;
-    int pppdisc = PPPDISC;
-
-    if (openpty(&loop_master, &loop_slave, loop_name, NULL, NULL) < 0) {
-	syslog(LOG_ERR, "No free pty for loopback");
-	die(1);
-    }
-    SYSDEBUG((LOG_DEBUG, "using %s for loopback", loop_name));
-
-    if (tcgetattr(loop_slave, &tios) == 0) {
-	tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB);
-	tios.c_cflag |= CS8 | CREAD;
-	tios.c_iflag = IGNPAR;
-	tios.c_oflag = 0;
-	tios.c_lflag = 0;
-	if (tcsetattr(loop_slave, TCSAFLUSH, &tios) < 0)
-	    syslog(LOG_WARNING, "couldn't set attributes on loopback: %m");
-    }
-
-    if ((flags = fcntl(loop_master, F_GETFL)) != -1) 
-	if (fcntl(loop_master, F_SETFL, flags | O_NONBLOCK) == -1)
-	    syslog(LOG_WARNING, "couldn't set loopback to nonblock: %m");
-
-    ppp_fd = loop_slave;
-    if (ioctl(ppp_fd, TIOCSETD, &pppdisc) < 0) {
-	syslog(LOG_ERR, "ioctl(TIOCSETD): %m");
-	die(1);
-    }
-
-    /*
-     * Find out which interface we were given.
-     */
-    if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0) {	
-	syslog(LOG_ERR, "ioctl(PPPIOCGUNIT): %m");
-	die(1);
-    }
-
-    /*
-     * Enable debug in the driver if requested.
-     */
-    if (kdebugflag) {
-	if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &flags) < 0) {
-	    syslog(LOG_WARNING, "ioctl (PPPIOCGFLAGS): %m");
-	} else {
-	    flags |= (kdebugflag & 0xFF) * SC_DEBUG;
-	    if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &flags) < 0)
-		syslog(LOG_WARNING, "ioctl(PPPIOCSFLAGS): %m");
-	}
-    }
-
-}
-
-
-/*
- * output - Output PPP packet.
- */
-void
-output(unit, p, len)
-    int unit;
-    u_char *p;
-    int len;
-{
-    if (debug)
-	log_packet(p, len, "sent ", LOG_DEBUG);
-
-    if (write(ttyfd, p, len) < 0) {
-	if (errno != EIO)
-	    syslog(LOG_ERR, "write: %m");
-    }
-}
-
-
-/*
- * wait_input - wait until there is data available on ttyfd,
- * for the length of time specified by *timo (indefinite
- * if timo is NULL).
- */
-void
-wait_input(timo)
-    struct timeval *timo;
-{
-    fd_set ready;
-    int n;
-
-    if (ttyfd >= FD_SETSIZE) {
-	    syslog(LOG_ERR, "descriptor too big");
-	    die(1);
-    }
-    FD_ZERO(&ready);
-    FD_SET(ttyfd, &ready);
-    n = select(ttyfd+1, &ready, NULL, &ready, timo);
-    if (n < 0 && errno != EINTR) {
-	syslog(LOG_ERR, "select: %m");
-	die(1);
-    }
-}
-
-
-/*
- * wait_loop_output - wait until there is data available on the
- * loopback, for the length of time specified by *timo (indefinite
- * if timo is NULL).
- */
-void
-wait_loop_output(timo)
-    struct timeval *timo;
-{
-    fd_set ready;
-    int n;
-
-    if (loop_master >= FD_SETSIZE) {
-	    syslog(LOG_ERR, "descriptor too big");
-	    die(1);
-    }
-    FD_ZERO(&ready);
-    FD_SET(loop_master, &ready);
-    n = select(loop_master + 1, &ready, NULL, &ready, timo);
-    if (n < 0 && errno != EINTR) {
-	syslog(LOG_ERR, "select: %m");
-	die(1);
-    }
-}
-
-
-/*
- * wait_time - wait for a given length of time or until a
- * signal is received.
- */
-void
-wait_time(timo)
-    struct timeval *timo;
-{
-    int n;
-
-    n = select(0, NULL, NULL, NULL, timo);
-    if (n < 0 && errno != EINTR) {
-	syslog(LOG_ERR, "select: %m");
-	die(1);
-    }
-}
-
-
-/*
- * read_packet - get a PPP packet from the serial device.
- */
-int
-read_packet(buf)
-    u_char *buf;
-{
-    int len;
-
-    if ((len = read(ttyfd, buf, PPP_MTU + PPP_HDRLEN)) < 0) {
-	if (errno == EWOULDBLOCK || errno == EINTR)
-	    return -1;
-	syslog(LOG_ERR, "read: %m");
-	die(1);
-    }
-    return len;
-}
-
-
-/*
- * get_loop_output - read characters from the loopback, form them
- * into frames, and detect when we want to bring the real link up.
- * Return value is 1 if we need to bring up the link, 0 otherwise.
- */
-int
-get_loop_output()
-{
-    int rv = 0;
-    int n;
-
-    while ((n = read(loop_master, inbuf, sizeof(inbuf))) >= 0) {
-	if (loop_chars(inbuf, n))
-	    rv = 1;
-    }
-
-    if (n == 0) {
-	syslog(LOG_ERR, "eof on loopback");
-	die(1);
-    } else if (errno != EWOULDBLOCK){
-	syslog(LOG_ERR, "read from loopback: %m");
-	die(1);
-    }
-
-    return rv;
-}
-
-
-/*
- * ppp_send_config - configure the transmit characteristics of
- * the ppp interface.
- */
-void
-ppp_send_config(unit, mtu, asyncmap, pcomp, accomp)
-    int unit, mtu;
-    u_int32_t asyncmap;
-    int pcomp, accomp;
-{
-    u_int x;
-    struct ifreq ifr;
-
-    strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
-    ifr.ifr_mtu = mtu;
-    if (ioctl(sockfd, SIOCSIFMTU, (caddr_t) &ifr) < 0) {
-	syslog(LOG_ERR, "ioctl(SIOCSIFMTU): %m");
-	quit();
-    }
-
-    if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSASYNCMAP): %m");
-	quit();
-    }
-
-    if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
-	quit();
-    }
-    x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT;
-    x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC;
-    if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
-	quit();
-    }
-}
-
-
-/*
- * ppp_set_xaccm - set the extended transmit ACCM for the interface.
- */
-void
-ppp_set_xaccm(unit, accm)
-    int unit;
-    ext_accm accm;
-{
-    if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY)
-	syslog(LOG_WARNING, "ioctl(set extended ACCM): %m");
-}
-
-
-/*
- * ppp_recv_config - configure the receive-side characteristics of
- * the ppp interface.
- */
-void
-ppp_recv_config(unit, mru, asyncmap, pcomp, accomp)
-    int unit, mru;
-    u_int32_t asyncmap;
-    int pcomp, accomp;
-{
-    int x;
-
-    if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSMRU): %m");
-	quit();
-    }
-    if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSRASYNCMAP): %m");
-	quit();
-    }
-    if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
-	quit();
-    }
-    x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC;
-    if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
-	quit();
-    }
-}
-
-/*
- * ccp_test - ask kernel whether a given compression method
- * is acceptable for use.  Returns 1 if the method and parameters
- * are OK, 0 if the method is known but the parameters are not OK
- * (e.g. code size should be reduced), or -1 if the method is unknown.
- */
-int
-ccp_test(unit, opt_ptr, opt_len, for_transmit)
-    int unit, opt_len, for_transmit;
-    u_char *opt_ptr;
-{
-    struct ppp_option_data data;
-
-    data.ptr = opt_ptr;
-    data.length = opt_len;
-    data.transmit = for_transmit;
-    if (ioctl(ttyfd, PPPIOCSCOMPRESS, (caddr_t) &data) >= 0)
-	return 1;
-    return (errno == ENOBUFS)? 0: -1;
-}
-
-/*
- * ccp_flags_set - inform kernel about the current state of CCP.
- */
-void
-ccp_flags_set(unit, isopen, isup)
-    int unit, isopen, isup;
-{
-    int x;
-
-    if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
-	return;
-    }
-    x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN;
-    x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP;
-    if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0)
-	syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
-}
-
-/*
- * ccp_fatal_error - returns 1 if decompression was disabled as a
- * result of an error detected after decompression of a packet,
- * 0 otherwise.  This is necessary because of patent nonsense.
- */
-int
-ccp_fatal_error(unit)
-    int unit;
-{
-    int x;
-
-    if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCGFLAGS): %m");
-	return 0;
-    }
-    return x & SC_DC_FERROR;
-}
-
-/*
- * get_idle_time - return how long the link has been idle.
- */
-int
-get_idle_time(u, ip)
-    int u;
-    struct ppp_idle *ip;
-{
-    return ioctl(ppp_fd, PPPIOCGIDLE, ip) >= 0;
-}
-
-
-#ifdef PPP_FILTER
-/*
- * set_filters - transfer the pass and active filters to the kernel.
- */
-int
-set_filters(pass, active)
-    struct bpf_program *pass, *active;
-{
-    int ret = 1;
-
-    if (pass->bf_len > 0) {
-	if (ioctl(ppp_fd, PPPIOCSPASS, pass) < 0) {
-	    syslog(LOG_ERR, "Couldn't set pass-filter in kernel: %m");
-	    ret = 0;
-	}
-    }
-    if (active->bf_len > 0) {
-	if (ioctl(ppp_fd, PPPIOCSACTIVE, active) < 0) {
-	    syslog(LOG_ERR, "Couldn't set active-filter in kernel: %m");
-	    ret = 0;
-	}
-    }
-    return ret;
-}
-#endif
-
-/*
- * sifvjcomp - config tcp header compression
- */
-int
-sifvjcomp(u, vjcomp, cidcomp, maxcid)
-    int u, vjcomp, cidcomp, maxcid;
-{
-    u_int x;
-
-    if (ioctl(ppp_fd, PPPIOCGFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl (PPPIOCGFLAGS): %m");
-	return 0;
-    }
-    x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP;
-    x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID;
-    if (ioctl(ppp_fd, PPPIOCSFLAGS, (caddr_t) &x) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
-	return 0;
-    }
-    if (vjcomp && ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) {
-	syslog(LOG_ERR, "ioctl(PPPIOCSFLAGS): %m");
-	return 0;
-    }
-    return 1;
-}
-
-/*
- * sifup - Config the interface up and enable IP packets to pass.
- */
-int
-sifup(u)
-    int u;
-{
-    struct ifreq ifr;
-
-    strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
-    if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
-	syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
-	return 0;
-    }
-    ifr.ifr_flags |= IFF_UP;
-    if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
-	syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
-	return 0;
-    }
-    if_is_up = 1;
-    return 1;
-}
-
-/*
- * sifnpmode - Set the mode for handling packets for a given NP.
- */
-int
-sifnpmode(u, proto, mode)
-    int u;
-    int proto;
-    enum NPmode mode;
-{
-    struct npioctl npi;
-
-    npi.protocol = proto;
-    npi.mode = mode;
-    if (ioctl(ppp_fd, PPPIOCSNPMODE, &npi) < 0) {
-	syslog(LOG_ERR, "ioctl(set NP %d mode to %d): %m", proto, mode);
-	return 0;
-    }
-    return 1;
-}
-
-/*
- * sifdown - Config the interface down and disable IP.
- */
-int
-sifdown(u)
-    int u;
-{
-    struct ifreq ifr;
-    int rv;
-    struct npioctl npi;
-
-    rv = 1;
-    npi.protocol = PPP_IP;
-    npi.mode = NPMODE_ERROR;
-    ioctl(ppp_fd, PPPIOCSNPMODE, (caddr_t) &npi);
-    /* ignore errors, because ppp_fd might have been closed by now. */
-
-    strncpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name));
-    if (ioctl(sockfd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) {
-	syslog(LOG_ERR, "ioctl (SIOCGIFFLAGS): %m");
-	rv = 0;
-    } else {
-	ifr.ifr_flags &= ~IFF_UP;
-	if (ioctl(sockfd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) {
-	    syslog(LOG_ERR, "ioctl(SIOCSIFFLAGS): %m");
-	    rv = 0;
-	} else
-	    if_is_up = 0;
-    }
-    return rv;
-}
-
-/*
- * SET_SA_FAMILY - set the sa_family field of a struct sockaddr,
- * if it exists.
- */
-#define SET_SA_FAMILY(addr, family)		\
-    BZERO((char *) &(addr), sizeof(addr));	\
-    addr.sa_family = (family); 			\
-    addr.sa_len = sizeof(addr);
-
-/*
- * sifaddr - Config the interface IP addresses and netmask.
- */
-int
-sifaddr(u, o, h, m)
-    int u;
-    u_int32_t o, h, m;
-{
-    struct ifaliasreq ifra;
-    struct ifreq ifr;
-
-    strncpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name));
-    SET_SA_FAMILY(ifra.ifra_addr, AF_INET);
-    ((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o;
-    SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET);
-    ((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h;
-    if (m != 0) {
-	SET_SA_FAMILY(ifra.ifra_mask, AF_INET);
-	((struct sockaddr_in *) &ifra.ifra_mask)->sin_addr.s_addr = m;
-    } else
-	BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask));
-    BZERO(&ifr, sizeof(ifr));
-    strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name));
-    if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifr) < 0) {
-	if (errno != EADDRNOTAVAIL)
-	    syslog(LOG_WARNING, "Couldn't remove interface address: %m");
-    }
-    if (ioctl(sockfd, SIOCAIFADDR, (caddr_t) &ifra) < 0) {
-	if (errno != EEXIST) {
-	    syslog(LOG_ERR, "Couldn't set interface address: %m");
-	    return 0;
-	}
-	syslog(LOG_WARNING,
-	       "Couldn't set interface address: Address %s already exists",
-		ip_ntoa(o));
-    }
-    ifaddrs[0] = o;
-    ifaddrs[1] = h;
-    return 1;
-}
-
-/*
- * cifaddr - Clear the interface IP addresses, and delete routes
- * through the interface if possible.
- */
-int
-cifaddr(u, o, h)
-    int u;
-    u_int32_t o, h;
-{
-    struct ifaliasreq ifra;
-
-    ifaddrs[0] = 0;
-    strncpy(ifra.ifra_name, ifname, sizeof(ifra.ifra_name));
-    SET_SA_FAMILY(ifra.ifra_addr, AF_INET);
-    ((struct sockaddr_in *) &ifra.ifra_addr)->sin_addr.s_addr = o;
-    SET_SA_FAMILY(ifra.ifra_broadaddr, AF_INET);
-    ((struct sockaddr_in *) &ifra.ifra_broadaddr)->sin_addr.s_addr = h;
-    BZERO(&ifra.ifra_mask, sizeof(ifra.ifra_mask));
-    if (ioctl(sockfd, SIOCDIFADDR, (caddr_t) &ifra) < 0) {
-	if (errno != EADDRNOTAVAIL)
-	    syslog(LOG_WARNING, "Couldn't delete interface address: %m");
-	return 0;
-    }
-    return 1;
-}
-
-/*
- * sifdefaultroute - assign a default route through the address given.
- */
-int
-sifdefaultroute(u, l, g)
-    int u;
-    u_int32_t l, g;
-{
-    return dodefaultroute(g, 's');
-}
-
-/*
- * cifdefaultroute - delete a default route through the address given.
- */
-int
-cifdefaultroute(u, l, g)
-    int u;
-    u_int32_t l, g;
-{
-    return dodefaultroute(g, 'c');
-}
-
-/*
- * dodefaultroute - talk to a routing socket to add/delete a default route.
- */
-static int
-dodefaultroute(g, cmd)
-    u_int32_t g;
-    int cmd;
-{
-    int routes;
-    struct {
-	struct rt_msghdr	hdr;
-	struct sockaddr_in	dst;
-	struct sockaddr_in	gway;
-	struct sockaddr_in	mask;
-    } rtmsg;
-
-    if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
-	syslog(LOG_ERR, "Couldn't %s default route: socket: %m",
-	       cmd=='s'? "add": "delete");
-	return 0;
-    }
-
-    memset(&rtmsg, 0, sizeof(rtmsg));
-    rtmsg.hdr.rtm_type = cmd == 's'? RTM_ADD: RTM_DELETE;
-    rtmsg.hdr.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;
-    rtmsg.hdr.rtm_version = RTM_VERSION;
-    rtmsg.hdr.rtm_seq = ++rtm_seq;
-    rtmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;
-    rtmsg.dst.sin_len = sizeof(rtmsg.dst);
-    rtmsg.dst.sin_family = AF_INET;
-    rtmsg.gway.sin_len = sizeof(rtmsg.gway);
-    rtmsg.gway.sin_family = AF_INET;
-    rtmsg.gway.sin_addr.s_addr = g;
-    rtmsg.mask.sin_len = sizeof(rtmsg.dst);
-    rtmsg.mask.sin_family = AF_INET;
-
-    rtmsg.hdr.rtm_msglen = sizeof(rtmsg);
-    if (write(routes, &rtmsg, sizeof(rtmsg)) < 0) {
-	syslog(LOG_ERR, "Couldn't %s default route: %m",
-	       cmd=='s'? "add": "delete");
-	close(routes);
-	return 0;
-    }
-
-    close(routes);
-    default_route_gateway = (cmd == 's')? g: 0;
-    return 1;
-}
-
-#if RTM_VERSION >= 3
-
-/*
- * sifproxyarp - Make a proxy ARP entry for the peer.
- */
-static struct {
-    struct rt_msghdr		hdr;
-    struct sockaddr_inarp	dst;
-    struct sockaddr_dl		hwa;
-    char			extra[128];
-} arpmsg;
-
-static int arpmsg_valid;
-
-int
-sifproxyarp(unit, hisaddr)
-    int unit;
-    u_int32_t hisaddr;
-{
-    int routes;
-
-    /*
-     * Get the hardware address of an interface on the same subnet
-     * as our local address.
-     */
-    memset(&arpmsg, 0, sizeof(arpmsg));
-    if (!get_ether_addr(hisaddr, &arpmsg.hwa)) {
-	syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
-	return 0;
-    }
-
-    if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
-	syslog(LOG_ERR, "Couldn't add proxy arp entry: socket: %m");
-	return 0;
-    }
-
-    arpmsg.hdr.rtm_type = RTM_ADD;
-    arpmsg.hdr.rtm_flags = RTF_ANNOUNCE | RTF_HOST | RTF_STATIC;
-    arpmsg.hdr.rtm_version = RTM_VERSION;
-    arpmsg.hdr.rtm_seq = ++rtm_seq;
-    arpmsg.hdr.rtm_addrs = RTA_DST | RTA_GATEWAY;
-    arpmsg.hdr.rtm_inits = RTV_EXPIRE;
-    arpmsg.dst.sin_len = sizeof(struct sockaddr_inarp);
-    arpmsg.dst.sin_family = AF_INET;
-    arpmsg.dst.sin_addr.s_addr = hisaddr;
-    arpmsg.dst.sin_other = SIN_PROXY;
-
-    arpmsg.hdr.rtm_msglen = (char *) &arpmsg.hwa - (char *) &arpmsg
-	+ arpmsg.hwa.sdl_len;
-    if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
-	syslog(LOG_ERR, "Couldn't add proxy arp entry: %m");
-	close(routes);
-	return 0;
-    }
-
-    close(routes);
-    arpmsg_valid = 1;
-    proxy_arp_addr = hisaddr;
-    return 1;
-}
-
-/*
- * cifproxyarp - Delete the proxy ARP entry for the peer.
- */
-int
-cifproxyarp(unit, hisaddr)
-    int unit;
-    u_int32_t hisaddr;
-{
-    int routes;
-
-    if (!arpmsg_valid)
-	return 0;
-    arpmsg_valid = 0;
-
-    arpmsg.hdr.rtm_type = RTM_DELETE;
-    arpmsg.hdr.rtm_seq = ++rtm_seq;
-
-    if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) {
-	syslog(LOG_ERR, "Couldn't delete proxy arp entry: socket: %m");
-	return 0;
-    }
-
-    if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) {
-	syslog(LOG_ERR, "Couldn't delete proxy arp entry: %m");
-	close(routes);
-	return 0;
-    }
-
-    close(routes);
-    proxy_arp_addr = 0;
-    return 1;
-}
-
-#else	/* RTM_VERSION */
-
-/*
- * sifproxyarp - Make a proxy ARP entry for the peer.
- */
-int
-sifproxyarp(unit, hisaddr)
-    int unit;
-    u_int32_t hisaddr;
-{
-    struct arpreq arpreq;
-    struct {
-	struct sockaddr_dl	sdl;
-	char			space[128];
-    } dls;
-
-    BZERO(&arpreq, sizeof(arpreq));
-
-    /*
-     * Get the hardware address of an interface on the same subnet
-     * as our local address.
-     */
-    if (!get_ether_addr(hisaddr, &dls.sdl)) {
-	syslog(LOG_ERR, "Cannot determine ethernet address for proxy ARP");
-	return 0;
-    }
-
-    arpreq.arp_ha.sa_len = sizeof(struct sockaddr);
-    arpreq.arp_ha.sa_family = AF_UNSPEC;
-    BCOPY(LLADDR(&dls.sdl), arpreq.arp_ha.sa_data, dls.sdl.sdl_alen);
-    SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
-    ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
-    arpreq.arp_flags = ATF_PERM | ATF_PUBL;
-    if (ioctl(sockfd, SIOCSARP, (caddr_t)&arpreq) < 0) {
-	syslog(LOG_ERR, "Couldn't add proxy arp entry: %m");
-	return 0;
-    }
-
-    proxy_arp_addr = hisaddr;
-    return 1;
-}
-
-/*
- * cifproxyarp - Delete the proxy ARP entry for the peer.
- */
-int
-cifproxyarp(unit, hisaddr)
-    int unit;
-    u_int32_t hisaddr;
-{
-    struct arpreq arpreq;
-
-    BZERO(&arpreq, sizeof(arpreq));
-    SET_SA_FAMILY(arpreq.arp_pa, AF_INET);
-    ((struct sockaddr_in *) &arpreq.arp_pa)->sin_addr.s_addr = hisaddr;
-    if (ioctl(sockfd, SIOCDARP, (caddr_t)&arpreq) < 0) {
-	syslog(LOG_WARNING, "Couldn't delete proxy arp entry: %m");
-	return 0;
-    }
-    proxy_arp_addr = 0;
-    return 1;
-}
-#endif	/* RTM_VERSION */
-
-#ifdef IPX_CHANGE
-/********************************************************************
- *
- * sipxfaddr - Config the interface IPX networknumber
- */
-
-int
-sipxfaddr (int unit, unsigned long int network, unsigned char * node )
-  {
-    int    result = 1;
-
-    int    skfd; 
-    struct sockaddr_ipx  ipx_addr;
-    struct ifreq         ifr;
-    struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr;
-    union ipx_net_u net;
-
-    skfd = socket (AF_IPX, SOCK_DGRAM, 0);
-    if (skfd < 0)
-      { 
-	syslog (LOG_DEBUG, "socket(AF_IPX): %m(%d)", errno);
-	result = 0;
-      }
-    else
-      {
-	memset (&ifr, '\0', sizeof (ifr));
-	strcpy (ifr.ifr_name, ifname);
-
-	memcpy (sipx->sipx_addr.x_host.c_host, node, 6);
-	sipx->sipx_len     = sizeof(sipx);
-	sipx->sipx_family  = AF_IPX;
-	sipx->sipx_port    = 0;
-	memset(&net, 0, sizeof(net));
-	net.long_e = htonl (network);
-	sipx->sipx_addr.x_net = net.net_e;
-/*
- *  Set the IPX device
- */
-	if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0)
-	  {
-	    result = 0;
-	    if (errno != EEXIST)
-	      {
-		syslog (LOG_DEBUG,
-			    "ioctl(SIOCAIFADDR, CRTITF): %m(%d)", errno);
-	      }
-	    else
-	      {
-		syslog (LOG_WARNING,
-			"ioctl(SIOCAIFADDR, CRTITF): Address already exists");
-	      }
-	  }
-	close (skfd);
-      }
-    return result;
-  }
-
-/********************************************************************
- *
- * cipxfaddr - Clear the information for the IPX network. The IPX routes
- *	       are removed and the device is no longer able to pass IPX
- *	       frames.
- */
-
-int cipxfaddr (int unit)
-  {
-    int    result = 1;
-
-    int    skfd; 
-    struct sockaddr_ipx  ipx_addr;
-    struct ifreq         ifr;
-    struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr;
-
-    skfd = socket (AF_IPX, SOCK_DGRAM, 0);
-    if (skfd < 0)
-      { 
-	syslog (LOG_DEBUG, "socket(AF_IPX): %m(%d)", errno);
-	result = 0;
-      }
-    else
-      {
-	memset (&ifr, '\0', sizeof (ifr));
-	strcpy (ifr.ifr_name, ifname);
-
-	sipx->sipx_len     = sizeof(sipx);
-	sipx->sipx_family  = AF_IPX;
-/*
- *  Set the IPX device
- */
-	if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0)
-	  {
-	    syslog (LOG_INFO,
-			"ioctl(SIOCAIFADDR, IPX_DLTITF): %m(%d)", errno);
-	    result = 0;
-	  }
-	close (skfd);
-      }
-    return result;
-  }
-#endif
-
-/*
- * get_ether_addr - get the hardware address of an interface on the
- * the same subnet as ipaddr.
- */
-static int
-get_ether_addr(ipaddr, hwaddr)
-    u_int32_t ipaddr;
-    struct sockaddr_dl *hwaddr;
-{
-    u_int32_t ina, mask;
-    struct sockaddr_dl *dla;
-    struct ifaddrs *ifap, *ifa, *ifp;
-
-    /*
-     * Scan through looking for an interface with an Internet
-     * address on the same subnet as `ipaddr'.
-     */
-    if (getifaddrs(&ifap) != 0) {
-	syslog(LOG_ERR, "getifaddrs: %m");
-	return 0;
-    }
-    for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
-	if (ifa->ifa_addr->sa_family != AF_INET)
-	    continue;
-	ina = ((struct sockaddr_in *) ifa->ifa_addr)->sin_addr.s_addr;
-	/*
-	 * Check that the interface is up, and not point-to-point
-	 * or loopback.
-	 */
-	if ((ifa->ifa_flags &
-	    (IFF_UP|IFF_BROADCAST|IFF_POINTOPOINT|IFF_LOOPBACK|IFF_NOARP))
-	    != (IFF_UP|IFF_BROADCAST))
-		continue;
-	/*
-	 * Get its netmask and check that it's on the right subnet.
-	 */
-	mask = ((struct sockaddr_in *) ifa->ifa_netmask)->sin_addr.s_addr;
-	if ((ipaddr & mask) != (ina & mask))
-		continue;
-	break;
-    }
-    if (!ifa) {
-	freeifaddrs(ifap);
-	return 0;
-    }
-    syslog(LOG_INFO, "found interface %s for proxy arp", ifa->ifa_name);
-
-    /*
-     * Now scan through again looking for a link-level address
-     * for this interface.
-     */
-    ifp = ifa;
-    for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
-	if (strcmp(ifp->ifa_name, ifa->ifa_name) != 0)
-	    continue;
-	if (ifa->ifa_addr->sa_family != AF_LINK)
-	    continue;
-	/*
-	 * Found the link-level address - copy it out
-	 */
-	dla = (struct sockaddr_dl *) ifa->ifa_addr;
-	BCOPY(dla, hwaddr, dla->sdl_len);
-	freeifaddrs(ifap);
-	return 1;
-    }
-
-    freeifaddrs(ifap);
-    return 0;
-}
-
-/*
- * Return user specified netmask, modified by any mask we might determine
- * for address `addr' (in network byte order).
- * Here we scan through the system's list of interfaces, looking for
- * any non-point-to-point interfaces which might appear to be on the same
- * network as `addr'.  If we find any, we OR in their netmask to the
- * user-specified netmask.
- */
-u_int32_t
-GetMask(addr)
-    u_int32_t addr;
-{
-    u_int32_t mask, nmask, ina;
-    struct ifaddrs *ifap, *ifa;
-
-    addr = ntohl(addr);
-    if (IN_CLASSA(addr))	/* determine network mask for address class */
-	nmask = IN_CLASSA_NET;
-    else if (IN_CLASSB(addr))
-	nmask = IN_CLASSB_NET;
-    else
-	nmask = IN_CLASSC_NET;
-    /* class D nets are disallowed by bad_ip_adrs */
-    mask = netmask | htonl(nmask);
-
-    /*
-     * Scan through the system's network interfaces.
-     */
-    if (getifaddrs(&ifap) != 0) {
-	syslog(LOG_WARNING, "getifaddrs: %m");
-	return mask;
-    }
-    for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
-	/*
-	 * Check the interface's internet address.
-	 */
-	if (ifa->ifa_addr->sa_family != AF_INET)
-	    continue;
-	ina = ((struct sockaddr_in *)&ifa->ifa_addr)->sin_addr.s_addr;
-	if ((ntohl(ina) & nmask) != (addr & nmask))
-	    continue;
-	/*
-	 * Check that the interface is up, and not point-to-point or loopback.
-	 */
-	if ((ifa->ifa_flags & (IFF_UP|IFF_POINTOPOINT|IFF_LOOPBACK)) != IFF_UP)
-	    continue;
-	/*
-	 * Get its netmask and OR it into our mask.
-	 */
-	mask |= ((struct sockaddr_in *)&ifa->ifa_netmask)->sin_addr.s_addr;
-    }
-
-    freeifaddrs(ifap);
-    return mask;
-}
-
-/*
- * Use the hostid as part of the random number seed.
- */
-int
-get_host_seed()
-{
-    return gethostid();
-}
-
-/*
- * lock - create a lock file for the named lock device
- */
-#define	LOCK_PREFIX	"/var/spool/lock/LCK.."
-
-int
-lock(dev)
-    char *dev;
-{
-    char hdb_lock_buffer[12];
-    int fd, pid, n;
-    char *p;
-
-    if ((p = strrchr(dev, '/')) != NULL)
-	dev = p + 1;
-    lock_file = malloc(strlen(LOCK_PREFIX) + strlen(dev) + 1);
-    if (lock_file == NULL)
-	novm("lock file name");
-    strcat(strcpy(lock_file, LOCK_PREFIX), dev);
-
-    while ((fd = open(lock_file, O_EXCL | O_CREAT | O_RDWR, 0644)) < 0) {
-	if (errno == EEXIST
-	    && (fd = open(lock_file, O_RDONLY, 0)) >= 0) {
-	    /* Read the lock file to find out who has the device locked */
-	    n = read(fd, hdb_lock_buffer, 11);
-	    if (n <= 0) {
-		syslog(LOG_ERR, "Can't read pid from lock file %s", lock_file);
-		close(fd);
-	    } else {
-		hdb_lock_buffer[n] = 0;
-		pid = atoi(hdb_lock_buffer);
-		if (kill(pid, 0) == -1 && errno == ESRCH) {
-		    /* pid no longer exists - remove the lock file */
-		    if (unlink(lock_file) == 0) {
-			close(fd);
-			syslog(LOG_NOTICE, "Removed stale lock on %s (pid %d)",
-			       dev, pid);
-			continue;
-		    } else
-			syslog(LOG_WARNING, "Couldn't remove stale lock on %s",
-			       dev);
-		} else
-		    syslog(LOG_NOTICE, "Device %s is locked by pid %d",
-			   dev, pid);
-	    }
-	    close(fd);
-	} else
-	    syslog(LOG_ERR, "Can't create lock file %s: %m", lock_file);
-	free(lock_file);
-	lock_file = NULL;
-	return -1;
-    }
-
-    sprintf(hdb_lock_buffer, "%10d\n", getpid());
-    write(fd, hdb_lock_buffer, 11);
-
-    close(fd);
-    return 0;
-}
-
-/*
- * unlock - remove our lockfile
- */
-void
-unlock()
-{
-    if (lock_file) {
-	unlink(lock_file);
-	free(lock_file);
-	lock_file = NULL;
-    }
-}