diff options
Diffstat (limited to 'net/pppd/patches/patch-az')
| -rw-r--r-- | net/pppd/patches/patch-az | 2152 |
1 files changed, 2152 insertions, 0 deletions
diff --git a/net/pppd/patches/patch-az b/net/pppd/patches/patch-az new file mode 100644 index 00000000000..3e5d9c56ee8 --- /dev/null +++ b/net/pppd/patches/patch-az @@ -0,0 +1,2152 @@ +$NetBSD: patch-az,v 1.1.1.1 2005/01/02 02:51:43 cube Exp $ + +--- pppd/sys-bsd.c.orig 2004-12-31 23:51:00.000000000 +0100 ++++ pppd/sys-bsd.c +@@ -0,0 +1,2147 @@ ++/* NetBSD: sys-bsd.c,v 1.49 2004/02/28 19:27:49 itojun Exp */ ++ ++/* ++ * sys-bsd.c - System-dependent procedures for setting up ++ * PPP interfaces on bsd-4.4-ish systems (including 386BSD, NetBSD, etc.) ++ * ++ * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions ++ * are met: ++ * ++ * 1. Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * ++ * 2. Redistributions in binary form must reproduce the above copyright ++ * notice, this list of conditions and the following disclaimer in ++ * the documentation and/or other materials provided with the ++ * distribution. ++ * ++ * 3. The name "Carnegie Mellon University" must not be used to ++ * endorse or promote products derived from this software without ++ * prior written permission. For permission or any legal ++ * details, please contact ++ * Office of Technology Transfer ++ * Carnegie Mellon University ++ * 5000 Forbes Avenue ++ * Pittsburgh, PA 15213-3890 ++ * (412) 268-4387, fax: (412) 268-7395 ++ * tech-transfer@andrew.cmu.edu ++ * ++ * 4. Redistributions of any form whatsoever must retain the following ++ * acknowledgment: ++ * "This product includes software developed by Computing Services ++ * at Carnegie Mellon University (http://www.cmu.edu/computing/)." ++ * ++ * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO ++ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY ++ * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE ++ * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES ++ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN ++ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING ++ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ++ * ++ * Copyright (c) 1989-2002 Paul Mackerras. All rights reserved. ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions ++ * are met: ++ * ++ * 1. Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * ++ * 2. Redistributions in binary form must reproduce the above copyright ++ * notice, this list of conditions and the following disclaimer in ++ * the documentation and/or other materials provided with the ++ * distribution. ++ * ++ * 3. The name(s) of the authors of this software must not be used to ++ * endorse or promote products derived from this software without ++ * prior written permission. ++ * ++ * 4. Redistributions of any form whatsoever must retain the following ++ * acknowledgment: ++ * "This product includes software developed by Paul Mackerras ++ * <paulus@samba.org>". ++ * ++ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO ++ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY ++ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY ++ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES ++ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN ++ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING ++ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ++ */ ++ ++#include <sys/cdefs.h> ++#ifndef lint ++#if 0 ++#define RCSID "Id: sys-bsd.c,v 1.47 2000/04/13 12:04:23 paulus Exp " ++#else ++__RCSID("NetBSD: sys-bsd.c,v 1.49 2004/02/28 19:27:49 itojun Exp "); ++#endif ++#endif ++ ++/* ++ * TODO: ++ */ ++ ++#include <stdio.h> ++#include <string.h> ++#include <stdlib.h> ++#include <unistd.h> ++#include <errno.h> ++#include <fcntl.h> ++#include <termios.h> ++#include <signal.h> ++#include <vis.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> ++#if defined(NetBSD1_2) || defined(__NetBSD_Version__) ++#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> ++#ifdef __KAME__ ++#include <netinet6/in6_var.h> ++#include <netinet6/nd6.h> ++#endif ++#include <ifaddrs.h> ++ ++#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 "pppd.h" ++#include "fsm.h" ++#include "ipcp.h" ++ ++#ifdef RCSID ++static const char rcsid[] = RCSID; ++#endif ++ ++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 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 sock_fd; /* socket for doing interface ioctls */ ++#ifdef INET6 ++static int sock6_fd = -1; /* socket for doing ipv6 interface ioctls */ ++#endif /* INET6 */ ++static int ttyfd = -1; /* the file descriptor of the tty */ ++ ++static fd_set in_fds; /* set of fds that wait_input waits for */ ++static int max_in_fd; /* highest fd set in in_fds */ ++ ++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 get_flags __P((int)); ++static void set_flags __P((int, int)); ++static int dodefaultroute __P((u_int32_t, int)); ++static int get_ether_addr __P((u_int32_t, struct sockaddr_dl *)); ++static void restore_loop(void); /* Transfer ppp unit back to loopback */ ++ ++ ++/******************************************************************** ++ * ++ * Functions to read and set the flags value in the device driver ++ */ ++ ++static int ++get_flags(fd) ++ int fd; ++{ ++ int flags; ++ ++ if (ioctl(fd, PPPIOCGFLAGS, (caddr_t) &flags) == -1) ++ fatal("ioctl(PPPIOCGFLAGS): %m"); ++ ++ SYSDEBUG((LOG_DEBUG, "get flags = %x\n", flags)); ++ return flags; ++} ++ ++/********************************************************************/ ++ ++static void ++set_flags(fd, flags) ++ int fd, flags; ++{ ++ SYSDEBUG((LOG_DEBUG, "set flags = %x\n", flags)); ++ ++ if (ioctl(fd, PPPIOCSFLAGS, (caddr_t) &flags) == -1) ++ fatal("ioctl(PPPIOCSFLAGS, %x): %m", flags, errno); ++} ++ ++/* ++ * sys_init - System-dependent initialization. ++ */ ++void ++sys_init() ++{ ++ /* Get an internet socket for doing socket ioctl's on. */ ++ if ((sock_fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) ++ fatal("Couldn't create IP socket: %m"); ++ ++#ifdef INET6 ++ if ((sock6_fd = socket(AF_INET6, SOCK_DGRAM, 0)) < 0) { ++ /* check it at runtime */ ++ sock6_fd = -1; ++ } ++#endif ++ ++ FD_ZERO(&in_fds); ++ max_in_fd = 0; ++} ++ ++/* ++ * 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) { ++ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ++ if (ioctl(sock_fd, SIOCGIFFLAGS, &ifr) >= 0 ++ && ((ifr.ifr_flags & IFF_UP) != 0)) { ++ ifr.ifr_flags &= ~IFF_UP; ++ ioctl(sock_fd, 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() ++{ ++ close(sock_fd); ++ if (loop_slave >= 0) { ++ close(loop_slave); ++ close(loop_master); ++ } ++} ++ ++/* ++ * sys_check_options - check the options that the user specified ++ */ ++int ++sys_check_options() ++{ ++#ifndef CDTRCTS ++ if (crtscts == 2) { ++ warn("DTR/CTS flow control is not supported on this system"); ++ return 0; ++ } ++#endif ++ return 1; ++} ++ ++/* ++ * ppp_available - check whether the system has any ppp interfaces ++ * (in fact we check whether we can do an ioctl on ppp0). ++ */ ++int ++ppp_available() ++{ ++ int s, ok; ++ struct ifreq ifr; ++ extern char *no_ppp_msg; ++ ++ if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) ++ return 1; /* can't tell */ ++ ++ strlcpy(ifr.ifr_name, "ppp0", sizeof (ifr.ifr_name)); ++ ok = ioctl(s, SIOCGIFFLAGS, (caddr_t) &ifr) >= 0; ++ close(s); ++ ++#ifdef __NetBSD__ ++ no_ppp_msg = "\ ++This system lacks kernel support for PPP. To include PPP support\n\ ++in the kernel, please read the ppp(4) manual page.\n"; ++#else ++ no_ppp_msg = "\ ++This system lacks kernel support for PPP. To include PPP support\n\ ++in the kernel, please follow the steps detailed in the README.bsd\n\ ++file in the ppp-2.2 distribution.\n"; ++#endif ++ return ok; ++} ++ ++/* ++ * tty_establish_ppp - Turn the serial port into a ppp interface. ++ */ ++int ++tty_establish_ppp(fd) ++ int fd; ++{ ++ int pppdisc = PPPDISC; ++ int x; ++ ttyfd = fd; ++ ++ if (demand) { ++ /* ++ * Demand mode - prime the old ppp device to relinquish the unit. ++ */ ++ if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) ++ fatal("ioctl(transfer ppp unit): %m"); ++ } ++ ++ /* ++ * Save the old line discipline of fd, and set it to PPP. ++ */ ++ if (ioctl(fd, TIOCGETD, &initdisc) < 0) ++ fatal("ioctl(TIOCGETD): %m"); ++ if (ioctl(fd, TIOCSETD, &pppdisc) < 0) ++ fatal("ioctl(TIOCSETD): %m"); ++ ++ if (!demand) { ++ /* ++ * Find out which interface we were given. ++ */ ++ if (ioctl(fd, PPPIOCGUNIT, &ifunit) < 0) ++ fatal("ioctl(PPPIOCGUNIT): %m"); ++ } else { ++ /* ++ * Check that we got the same unit again. ++ */ ++ if (ioctl(fd, PPPIOCGUNIT, &x) < 0) ++ fatal("ioctl(PPPIOCGUNIT): %m"); ++ if (x != ifunit) ++ fatal("transfer_ppp failed: wanted unit %d, got %d", ifunit, x); ++ x = TTYDISC; ++ ioctl(loop_slave, TIOCSETD, &x); ++ } ++ ++ ppp_fd = fd; ++ ++ /* ++ * Enable debug in the driver if requested. ++ */ ++ if (kdebugflag) { ++ x = get_flags(fd); ++ x |= (kdebugflag & 0xFF) * SC_DEBUG; ++ set_flags(fd, x); ++ } ++ ++ /* ++ * Set device for non-blocking reads. ++ */ ++ if ((initfdflags = fcntl(fd, F_GETFL)) == -1 ++ || fcntl(fd, F_SETFL, initfdflags | O_NONBLOCK) == -1) { ++ warn("Couldn't set device to non-blocking mode: %m"); ++ } ++ ++ return fd; ++} ++ ++/* ++ * restore_loop - reattach the ppp unit to the loopback. ++ */ ++static void ++restore_loop() ++{ ++ int x; ++ ++ /* ++ * Transfer the ppp interface back to the loopback. ++ */ ++ if (ioctl(ppp_fd, PPPIOCXFERUNIT, 0) < 0) ++ fatal("ioctl(transfer ppp unit): %m"); ++ x = PPPDISC; ++ if (ioctl(loop_slave, TIOCSETD, &x) < 0) ++ fatal("ioctl(TIOCSETD): %m"); ++ ++ /* ++ * Check that we got the same unit again. ++ */ ++ if (ioctl(loop_slave, PPPIOCGUNIT, &x) < 0) ++ fatal("ioctl(PPPIOCGUNIT): %m"); ++ if (x != ifunit) ++ fatal("transfer_ppp failed: wanted unit %d, got %d", ifunit, x); ++ ppp_fd = loop_slave; ++} ++ ++ ++/* ++ * Determine if the PPP connection should still be present. ++ */ ++extern int hungup; ++ ++/* ++ * tty_disestablish_ppp - Restore the serial port to normal operation. ++ * and reconnect the ppp unit to the loopback if in demand mode. ++ * This shouldn't call die() because it's called from die(). ++ */ ++void ++tty_disestablish_ppp(fd) ++ int fd; ++{ ++ if (demand) ++ restore_loop(); ++ ++ if (!hungup) { ++ ++ ++ /* Flush the tty output buffer so that the TIOCSETD doesn't hang. */ ++ if (tcflush(fd, TCIOFLUSH) < 0) ++ warn("tcflush failed: %m"); ++ ++ /* Restore old line discipline. */ ++ if (initdisc >= 0 && ioctl(fd, TIOCSETD, &initdisc) < 0) ++ error("ioctl(TIOCSETD): %m"); ++ initdisc = -1; ++ ++ /* Reset non-blocking mode on fd. */ ++ if (initfdflags != -1 && fcntl(fd, F_SETFL, initfdflags) < 0) ++ warn("Couldn't restore device fd flags: %m"); ++ } ++ initfdflags = -1; ++ ++ if (fd == ppp_fd) ++ ppp_fd = -1; ++} ++ ++/* ++ * cfg_bundle - configure the existing bundle. ++ * Used in demand mode. ++ */ ++void ++cfg_bundle(mrru, mtru, rssn, tssn) ++ int mrru, mtru, rssn, tssn; ++{ ++ abort(); ++#ifdef notyet ++ int flags; ++ struct ifreq ifr; ++ ++ if (!new_style_driver) ++ return; ++ ++ /* set the mrru, mtu and flags */ ++ if (ioctl(ppp_dev_fd, PPPIOCSMRRU, &mrru) < 0) ++ error("Couldn't set MRRU: %m"); ++ flags = get_flags(ppp_dev_fd); ++ flags &= ~(SC_MP_SHORTSEQ | SC_MP_XSHORTSEQ); ++ flags |= (rssn? SC_MP_SHORTSEQ: 0) | (tssn? SC_MP_XSHORTSEQ: 0) ++ | (mrru? SC_MULTILINK: 0); ++ ++ set_flags(ppp_dev_fd, flags); ++ ++ /* connect up the channel */ ++ if (ioctl(ppp_fd, PPPIOCCONNECT, &ifunit) < 0) ++ fatal("Couldn't attach to PPP unit %d: %m", ifunit); ++ add_fd(ppp_dev_fd); ++#endif ++} ++ ++/* ++ * make_new_bundle - create a new PPP unit (i.e. a bundle) ++ * and connect our channel to it. This should only get called ++ * if `multilink' was set at the time establish_ppp was called. ++ * In demand mode this uses our existing bundle instead of making ++ * a new one. ++ */ ++void ++make_new_bundle(mrru, mtru, rssn, tssn) ++ int mrru, mtru, rssn, tssn; ++{ ++ abort(); ++#ifdef notyet ++ if (!new_style_driver) ++ return; ++ ++ /* make us a ppp unit */ ++ if (make_ppp_unit() < 0) ++ die(1); ++ ++ /* set the mrru, mtu and flags */ ++ cfg_bundle(mrru, mtru, rssn, tssn); ++#endif ++} ++ ++/* ++ * bundle_attach - attach our link to a given PPP unit. ++ * We assume the unit is controlled by another pppd. ++ */ ++int ++bundle_attach(ifnum) ++ int ifnum; ++{ ++ abort(); ++#ifdef notyet ++ if (!new_style_driver) ++ return -1; ++ ++ if (ioctl(ppp_dev_fd, PPPIOCATTACH, &ifnum) < 0) { ++ if (errno == ENXIO) ++ return 0; /* doesn't still exist */ ++ fatal("Couldn't attach to interface unit %d: %m\n", ifnum); ++ } ++ if (ioctl(ppp_fd, PPPIOCCONNECT, &ifnum) < 0) ++ fatal("Couldn't connect to interface unit %d: %m", ifnum); ++ set_flags(ppp_dev_fd, get_flags(ppp_dev_fd) | SC_MULTILINK); ++ ++ ifunit = ifnum; ++#endif ++ return 1; ++} ++ ++/* ++ * destroy_bundle - tell the driver to destroy our bundle. ++ */ ++void destroy_bundle(void) ++{ ++#if notyet ++ if (ppp_dev_fd >= 0) { ++ close(ppp_dev_fd); ++ remove_fd(ppp_dev_fd); ++ ppp_dev_fd = -1; ++ } ++#endif ++} ++ ++ ++/* ++ * 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) { ++ struct ppp_rawin win; ++ char buf[4 * sizeof(win.buf) + 1]; ++ int i; ++ warn("Serial link is not 8-bit clean:"); ++ warn("All received characters had %s", s); ++ if (ioctl(ppp_fd, PPPIOCGRAWIN, &win) == -1) { ++ warn("ioctl(PPPIOCGRAWIN): %s", strerror(errno)); ++ return; ++ } ++ for (i = 0; i < sizeof(win.buf); i++) ++ win.buf[i] = win.buf[i] & 0x7f; ++ strvisx(buf, (char *)win.buf, win.count, VIS_CSTYLE); ++ warn("Last %d characters were: %s", (int)win.count, buf); ++ } ++ } ++} ++ ++/* ++ * 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) ++ fatal("tcgetattr: %m"); ++ ++ if (!restore_term) { ++ inittermios = tios; ++ ioctl(fd, TIOCGWINSZ, &wsinfo); ++ } ++ ++ tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB | CLOCAL); ++ if (crtscts > 0 && !local) { ++ if (crtscts == 2) { ++#ifdef CDTRCTS ++ tios.c_cflag |= CDTRCTS; ++#endif ++ } else ++ tios.c_cflag |= CRTSCTS; ++ } else if (crtscts < 0) { ++ tios.c_cflag &= ~CRTSCTS; ++#ifdef CDTRCTS ++ tios.c_cflag &= ~CDTRCTS; ++#endif ++ } ++ ++ 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) ++ fatal("Baud rate for %s is 0; need explicit baud rate", devnam); ++ } ++ baud_rate = inspeed; ++ ++ if (tcsetattr(fd, TCSAFLUSH, &tios) < 0) ++ fatal("tcsetattr: %m"); ++ ++ 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) ++ warn("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(unit, our_eui64, his_eui64) ++ int unit; ++ eui64_t our_eui64, his_eui64; ++{ ++#ifdef __KAME__ ++ int ifindex; ++ struct in6_aliasreq addreq6; ++ ++ if (sock6_fd < 0) { ++ fatal("No IPv6 socket available"); ++ /*NOTREACHED*/ ++ } ++ ++ /* actually, this part is not kame local - RFC2553 conformant */ ++ ifindex = if_nametoindex(ifname); ++ if (ifindex == 0) { ++ error("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) { ++ error("sif6addr: ioctl(SIOCAIFADDR_IN6): %m"); ++ return 0; ++ } ++ ++ return 1; ++#else ++ struct in6_ifreq ifr6; ++ struct ifreq ifr; ++ struct in6_rtmsg rt6; ++ ++ if (sock6_fd < 0) { ++ fatal("No IPv6 socket available"); ++ /*NOTREACHED*/ ++ } ++ ++ memset(&ifr, 0, sizeof (ifr)); ++ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ++ if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) { ++ error("sif6addr: ioctl(SIOCGIFINDEX): %m"); ++ return 0; ++ } ++ ++ /* Local interface */ ++ memset(&ifr6, 0, sizeof(ifr6)); ++ IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64); ++ ifr6.ifr6_ifindex = ifindex; ++ ifr6.ifr6_prefixlen = 10; ++ ++ if (ioctl(sock6_fd, SIOCSIFADDR, &ifr6) < 0) { ++ error("sif6addr: ioctl(SIOCSIFADDR): %m"); ++ return 0; ++ } ++ ++ /* Route to remote host */ ++ memset(&rt6, 0, sizeof(rt6)); ++ IN6_LLADDR_FROM_EUI64(rt6.rtmsg_dst, his_eui64); ++ rt6.rtmsg_flags = RTF_UP | RTF_HOST; ++ rt6.rtmsg_dst_len = 128; ++ rt6.rtmsg_ifindex = ifr.ifr_ifindex; ++ rt6.rtmsg_metric = 1; ++ ++ if (ioctl(sock6_fd, SIOCADDRT, &rt6) < 0) { ++ error("sif6addr: ioctl(SIOCADDRT): %m"); ++ return 0; ++ } ++ ++ return 1; ++#endif ++} ++ ++ ++/* ++ * cif6addr - Remove IPv6 address from interface ++ */ ++int ++cif6addr(unit, our_eui64, his_eui64) ++ int unit; ++ eui64_t our_eui64, his_eui64; ++{ ++#ifdef __KAME__ ++ int ifindex; ++ struct in6_ifreq delreq6; ++ ++ if (sock6_fd < 0) { ++ fatal("No IPv6 socket available"); ++ /*NOTREACHED*/ ++ } ++ ++ /* actually, this part is not kame local - RFC2553 conformant */ ++ ifindex = if_nametoindex(ifname); ++ if (ifindex == 0) { ++ error("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) { ++ error("cif6addr: ioctl(SIOCDIFADDR_IN6): %m"); ++ return 0; ++ } ++ ++ return 1; ++#else ++ struct ifreq ifr; ++ struct in6_ifreq ifr6; ++ ++ if (sock6_fd < 0) { ++ fatal("No IPv6 socket available"); ++ /*NOTREACHED*/ ++ } ++ ++ memset(&ifr, 0, sizeof(ifr)); ++ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ++ if (ioctl(sock6_fd, SIOCGIFINDEX, (caddr_t) &ifr) < 0) { ++ error("cif6addr: ioctl(SIOCGIFINDEX): %m"); ++ return 0; ++ } ++ ++ memset(&ifr6, 0, sizeof(ifr6)); ++ IN6_LLADDR_FROM_EUI64(ifr6.ifr6_addr, our_eui64); ++ ifr6.ifr6_ifindex = ifr.ifr_ifindex; ++ ifr6.ifr6_prefixlen = 10; ++ ++ if (ioctl(sock6_fd, SIOCDIFADDR, &ifr6) < 0) { ++ if (errno != EADDRNOTAVAIL) { ++ if (! ok_error (errno)) ++ error("cif6addr: ioctl(SIOCDIFADDR): %m"); ++ } ++ else { ++ warn("cif6addr: ioctl(SIOCDIFADDR): No such address"); ++ } ++ return (0); ++ } ++ return 1; ++#endif ++} ++#endif /* INET6 */ ++ ++/* ++ * get_pty - get a pty master/slave pair and chown the slave side ++ * to the uid given. Assumes slave_name points to >= 12 bytes of space. ++ */ ++int ++get_pty(master_fdp, slave_fdp, slave_name, uid) ++ int *master_fdp; ++ int *slave_fdp; ++ char *slave_name; ++ int uid; ++{ ++ struct termios tios; ++ ++ if (openpty(master_fdp, slave_fdp, slave_name, NULL, NULL) < 0) ++ return 0; ++ ++ fchown(*slave_fdp, uid, -1); ++ fchmod(*slave_fdp, S_IRUSR | S_IWUSR); ++ if (tcgetattr(*slave_fdp, &tios) == 0) { ++ tios.c_cflag &= ~(CSIZE | CSTOPB | PARENB); ++ tios.c_cflag |= CS8 | CREAD; ++ tios.c_iflag = IGNPAR | CLOCAL; ++ tios.c_oflag = 0; ++ tios.c_lflag = 0; ++ if (tcsetattr(*slave_fdp, TCSAFLUSH, &tios) < 0) ++ warn("couldn't set attributes on pty: %m"); ++ } else ++ warn("couldn't get attributes on pty: %m"); ++ ++ return 1; ++} ++ ++ ++/* ++ * 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. ++ */ ++int ++open_ppp_loopback() ++{ ++ int flags; ++ struct termios tios; ++ int pppdisc = PPPDISC; ++ ++ if (openpty(&loop_master, &loop_slave, loop_name, NULL, NULL) < 0) ++ fatal("No free pty for loopback"); ++ SYSDEBUG(("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) ++ warn("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) ++ warn("couldn't set loopback to nonblock: %m"); ++ ++ ppp_fd = loop_slave; ++ if (ioctl(ppp_fd, TIOCSETD, &pppdisc) < 0) ++ fatal("ioctl(TIOCSETD): %m"); ++ ++ /* ++ * Find out which interface we were given. ++ */ ++ if (ioctl(ppp_fd, PPPIOCGUNIT, &ifunit) < 0) ++ fatal("ioctl(PPPIOCGUNIT): %m"); ++ ++ /* ++ * Enable debug in the driver if requested. ++ */ ++ if (kdebugflag) { ++ flags = get_flags(ppp_fd); ++ flags |= (kdebugflag & 0xFF) * SC_DEBUG; ++ set_flags(ppp_fd, flags); ++ } ++ ++ return loop_master; ++} ++ ++ ++/* ++ * output - Output PPP packet. ++ */ ++void ++output(unit, p, len) ++ int unit; ++ u_char *p; ++ int len; ++{ ++ if (debug) ++ dbglog("sent %P", p, len); ++ ++ if (write(ttyfd, p, len) < 0) { ++ if (errno != EIO) ++ error("write: %m"); ++ } ++} ++ ++ ++/* ++ * wait_input - wait until there is data available, ++ * 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; ++ ++ ready = in_fds; ++ n = select(max_in_fd + 1, &ready, NULL, &ready, timo); ++ if (n < 0 && errno != EINTR) ++ fatal("select: %m"); ++} ++ ++ ++/* ++ * add_fd - add an fd to the set that wait_input waits for. ++ */ ++void add_fd(fd) ++ int fd; ++{ ++ if (fd >= FD_SETSIZE) ++ fatal("descriptor too big"); ++ FD_SET(fd, &in_fds); ++ if (fd > max_in_fd) ++ max_in_fd = fd; ++} ++ ++/* ++ * remove_fd - remove an fd from the set that wait_input waits for. ++ */ ++void remove_fd(fd) ++ int fd; ++{ ++ FD_CLR(fd, &in_fds); ++} ++ ++#if 0 ++/* ++ * 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; ++ ++ FD_ZERO(&ready); ++ if (loop_master >= FD_SETSIZE) ++ fatal("descriptor too big"); ++ FD_SET(loop_master, &ready); ++ n = select(loop_master + 1, &ready, NULL, &ready, timo); ++ if (n < 0 && errno != EINTR) ++ fatal("select: %m"); ++} ++ ++ ++/* ++ * 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) ++ fatal("select: %m"); ++} ++#endif ++ ++ ++/* ++ * 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; ++ fatal("read: %m"); ++ } ++ 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) ++ fatal("eof on loopback"); ++ if (errno != EWOULDBLOCK) ++ fatal("read from loopback: %m"); ++ ++ return rv; ++} ++ ++ ++/* ++ * netif_set_mtu - set the MTU on the PPP network interface. ++ */ ++void ++netif_set_mtu(unit, mtu) ++ int unit, mtu; ++{ ++ struct ifreq ifr; ++ ++ SYSDEBUG((LOG_DEBUG, "netif_set_mtu: mtu = %d\n", mtu)); ++ ++ memset(&ifr, '\0', sizeof (ifr)); ++ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); ++ ifr.ifr_mtu = mtu; ++ ++ if (ifunit >= 0 && ioctl(sock_fd, SIOCSIFMTU, (caddr_t) &ifr) < 0) ++ fatal("ioctl(SIOCSIFMTU): %m"); ++} ++ ++/* ++ * netif_get_mtu - get the MTU on the PPP network interface. ++ */ ++int ++netif_get_mtu(int unit) ++{ ++ struct ifreq ifr; ++ ++ memset (&ifr, '\0', sizeof (ifr)); ++ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); ++ ++ if (ifunit >= 0 && ioctl(sock_fd, SIOCGIFMTU, (caddr_t) &ifr) < 0) { ++ error("ioctl(SIOCGIFMTU): %m (line %d)", __LINE__); ++ return 0; ++ } ++ return ifr.ifr_mtu; ++} ++ ++ ++/* ++ * tty_send_config - configure the transmit characteristics of ++ * the ppp interface. ++ */ ++void ++tty_send_config(mtu, asyncmap, pcomp, accomp) ++ int mtu; ++ u_int32_t asyncmap; ++ int pcomp, accomp; ++{ ++ u_int x; ++#if 0 ++ /* Linux code does not do anything with the mtu here */ ++ ifnet_set_mtu(-1, mtu); ++#endif ++ ++ if (ioctl(ppp_fd, PPPIOCSASYNCMAP, (caddr_t) &asyncmap) < 0) ++ fatal("ioctl(PPPIOCSASYNCMAP): %m"); ++ ++ x = get_flags(ppp_fd); ++ x = pcomp? x | SC_COMP_PROT: x &~ SC_COMP_PROT; ++ x = accomp? x | SC_COMP_AC: x &~ SC_COMP_AC; ++ x = sync_serial ? x | SC_SYNC : x & ~SC_SYNC; ++ set_flags(ppp_fd, x); ++} ++ ++ ++/* ++ * ppp_set_xaccm - set the extended transmit ACCM for the interface. ++ */ ++void ++tty_set_xaccm(accm) ++ ext_accm accm; ++{ ++ if (ioctl(ppp_fd, PPPIOCSXASYNCMAP, accm) < 0 && errno != ENOTTY) ++ warn("ioctl(set extended ACCM): %m"); ++} ++ ++ ++/* ++ * ppp_recv_config - configure the receive-side characteristics of ++ * the ppp interface. ++ */ ++void ++tty_recv_config(mru, asyncmap, pcomp, accomp) ++ int mru; ++ u_int32_t asyncmap; ++ int pcomp, accomp; ++{ ++ int x; ++ ++ if (ioctl(ppp_fd, PPPIOCSMRU, (caddr_t) &mru) < 0) ++ fatal("ioctl(PPPIOCSMRU): %m"); ++ if (ioctl(ppp_fd, PPPIOCSRASYNCMAP, (caddr_t) &asyncmap) < 0) ++ fatal("ioctl(PPPIOCSRASYNCMAP): %m"); ++ x = get_flags(ppp_fd); ++ x = !accomp? x | SC_REJ_COMP_AC: x &~ SC_REJ_COMP_AC; ++ set_flags(ppp_fd, x); ++} ++ ++/* ++ * 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; ++ ++ x = get_flags(ppp_fd); ++ x = isopen? x | SC_CCP_OPEN: x &~ SC_CCP_OPEN; ++ x = isup? x | SC_CCP_UP: x &~ SC_CCP_UP; ++ set_flags(ppp_fd, x); ++} ++ ++/* ++ * 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; ++ ++ x = get_flags(ppp_fd); ++ 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; ++} ++ ++/* ++ * get_ppp_stats - return statistics for the link. ++ */ ++int ++get_ppp_stats(u, stats) ++ int u; ++ struct pppd_stats *stats; ++{ ++ struct ifpppstatsreq req; ++ ++ memset (&req, 0, sizeof (req)); ++ strlcpy(req.ifr_name, ifname, sizeof(req.ifr_name)); ++ if (ioctl(sock_fd, SIOCGPPPSTATS, &req) < 0) { ++ error("Couldn't get PPP statistics: %m"); ++ return 0; ++ } ++ stats->bytes_in = req.stats.p.ppp_ibytes; ++ stats->bytes_out = req.stats.p.ppp_obytes; ++ return 1; ++} ++ ++ ++#ifdef PPP_FILTER ++/* ++ * set_filters - transfer the pass and active filters to the kernel. ++ */ ++int ++set_filters(pass_in, pass_out, active_in, active_out) ++ struct bpf_program *pass_in, *pass_out, *active_in, *active_out; ++{ ++ int ret = 1; ++ ++ if (pass_in->bf_len > 0) { ++ if (ioctl(ppp_fd, PPPIOCSIPASS, pass_in) < 0) { ++ error("Couldn't set pass-filter-in in kernel: %m"); ++ ret = 0; ++ } ++ } ++ ++ if (pass_out->bf_len > 0) { ++ if (ioctl(ppp_fd, PPPIOCSOPASS, pass_out) < 0) { ++ error("Couldn't set pass-filter-out in kernel: %m"); ++ ret = 0; ++ } ++ } ++ ++ if (active_in->bf_len > 0) { ++ if (ioctl(ppp_fd, PPPIOCSIACTIVE, active_in) < 0) { ++ error("Couldn't set active-filter-in in kernel: %m"); ++ ret = 0; ++ } ++ } ++ ++ if (active_out->bf_len > 0) { ++ if (ioctl(ppp_fd, PPPIOCSOACTIVE, active_out) < 0) { ++ error("Couldn't set active-filter-out 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; ++ ++ x = get_flags(ppp_fd); ++ x = vjcomp ? x | SC_COMP_TCP: x &~ SC_COMP_TCP; ++ x = cidcomp? x & ~SC_NO_TCP_CCID: x | SC_NO_TCP_CCID; ++ set_flags(ppp_fd, x); ++ if (vjcomp && ioctl(ppp_fd, PPPIOCSMAXCID, (caddr_t) &maxcid) < 0) { ++ error("ioctl(PPPIOCSMAXCID): %m"); ++ return 0; ++ } ++ return 1; ++} ++ ++/* ++ * sifup - Config the interface up and enable IP packets to pass. ++ */ ++int ++sifup(u) ++ int u; ++{ ++ struct ifreq ifr; ++ ++ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); ++ if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { ++ error("ioctl (SIOCGIFFLAGS): %m"); ++ return 0; ++ } ++ ifr.ifr_flags |= IFF_UP; ++ if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { ++ error("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) { ++ error("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. */ ++ ++ strlcpy(ifr.ifr_name, ifname, sizeof (ifr.ifr_name)); ++ if (ioctl(sock_fd, SIOCGIFFLAGS, (caddr_t) &ifr) < 0) { ++ error("ioctl (SIOCGIFFLAGS): %m"); ++ rv = 0; ++ } else { ++ ifr.ifr_flags &= ~IFF_UP; ++ if (ioctl(sock_fd, SIOCSIFFLAGS, (caddr_t) &ifr) < 0) { ++ error("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; ++ ++ strlcpy(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)); ++ strlcpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ++ if (ioctl(sock_fd, SIOCDIFADDR, (caddr_t) &ifr) < 0) { ++ if (errno != EADDRNOTAVAIL) ++ warn("Couldn't remove interface address: %m"); ++ } ++ if (ioctl(sock_fd, SIOCAIFADDR, (caddr_t) &ifra) < 0) { ++ if (errno != EEXIST) { ++ error("Couldn't set interface address: %m"); ++ return 0; ++ } ++ warn("Couldn't set interface address: Address %I already exists", 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; ++ strlcpy(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(sock_fd, SIOCDIFADDR, (caddr_t) &ifra) < 0) { ++ if (errno != EADDRNOTAVAIL) ++ warn("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'); ++} ++ ++/******************************************************************** ++ * ++ * sipxfaddr - Config the interface IPX networknumber ++ */ ++ ++int sipxfaddr (int unit, unsigned long int network, unsigned char * node ) ++{ ++ int result = 1; ++ ++#ifdef IPX_CHANGE ++ int skfd; ++ struct ifreq ifr; ++ struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr; ++ ++ skfd = socket (AF_IPX, SOCK_DGRAM, 0); ++ if (skfd < 0) { ++ if (! ok_error (errno)) ++ dbglog("socket(AF_IPX): %m (line %d)", __LINE__); ++ result = 0; ++ } ++ else { ++ memset (&ifr, '\0', sizeof (ifr)); ++ strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ++ ++ memcpy (sipx->sipx_node, node, IPX_NODE_LEN); ++ sipx->sipx_family = AF_IPX; ++ sipx->sipx_port = 0; ++ sipx->sipx_network = htonl (network); ++ sipx->sipx_type = IPX_FRAME_ETHERII; ++ sipx->sipx_action = IPX_CRTITF; ++/* ++ * Set the IPX device ++ */ ++ if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { ++ result = 0; ++ if (errno != EEXIST) { ++ if (! ok_error (errno)) ++ dbglog("ioctl(SIOCSIFADDR, CRTITF): %m (line %d)", __LINE__); ++ } ++ else { ++ warn("ioctl(SIOCSIFADDR, CRTITF): Address already exists"); ++ } ++ } ++ close (skfd); ++ } ++#endif ++ 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; ++ ++#ifdef IPX_CHANGE ++ int skfd; ++ struct ifreq ifr; ++ struct sockaddr_ipx *sipx = (struct sockaddr_ipx *) &ifr.ifr_addr; ++ ++ skfd = socket (AF_IPX, SOCK_DGRAM, 0); ++ if (skfd < 0) { ++ if (! ok_error (errno)) ++ dbglog("socket(AF_IPX): %m (line %d)", __LINE__); ++ result = 0; ++ } ++ else { ++ memset (&ifr, '\0', sizeof (ifr)); ++ strlcpy (ifr.ifr_name, ifname, sizeof(ifr.ifr_name)); ++ ++ sipx->sipx_type = IPX_FRAME_ETHERII; ++ sipx->sipx_action = IPX_DLTITF; ++ sipx->sipx_family = AF_IPX; ++/* ++ * Set the IPX device ++ */ ++ if (ioctl(skfd, SIOCSIFADDR, (caddr_t) &ifr) < 0) { ++ if (! ok_error (errno)) ++ info("ioctl(SIOCSIFADDR, IPX_DLTITF): %m (line %d)", __LINE__); ++ result = 0; ++ } ++ close (skfd); ++ } ++#endif ++ return result; ++} ++ ++/* ++ * 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 netmask; ++ struct sockaddr_in genmask; ++ struct sockaddr_dl ifp; ++ } rtmsg; ++ ++ if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { ++ error("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 | RTA_GENMASK | RTA_IFP; ++ ++ rtmsg.dst.sin_len = sizeof(rtmsg.dst); ++ rtmsg.dst.sin_family = AF_INET; ++ rtmsg.dst.sin_addr.s_addr = 0; ++ ++ rtmsg.gway.sin_len = sizeof(rtmsg.gway); ++ rtmsg.gway.sin_family = AF_INET; ++ rtmsg.gway.sin_addr.s_addr = g; ++ ++ rtmsg.netmask.sin_len = sizeof(rtmsg.netmask); ++ rtmsg.netmask.sin_family = AF_INET; ++ rtmsg.netmask.sin_addr.s_addr = 0; ++ ++ rtmsg.genmask.sin_len = sizeof(rtmsg.genmask); ++ rtmsg.genmask.sin_family = AF_INET; ++ rtmsg.genmask.sin_addr.s_addr = 0; ++ ++ rtmsg.ifp.sdl_family = AF_LINK; ++ rtmsg.ifp.sdl_len = sizeof(rtmsg.ifp); ++ link_addr(ifname, &rtmsg.ifp); ++ ++ rtmsg.hdr.rtm_msglen = sizeof(rtmsg); ++ ++ if (write(routes, &rtmsg, sizeof(rtmsg)) < 0) { ++ error("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)) { ++ error("Cannot determine ethernet address for proxy ARP"); ++ return 0; ++ } ++ ++ if ((routes = socket(PF_ROUTE, SOCK_RAW, AF_INET)) < 0) { ++ error("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) { ++ error("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) { ++ error("Couldn't delete proxy arp entry: socket: %m"); ++ return 0; ++ } ++ ++ if (write(routes, &arpmsg, arpmsg.hdr.rtm_msglen) < 0) { ++ error("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)) { ++ error("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(sock_fd, SIOCSARP, (caddr_t)&arpreq) < 0) { ++ error("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(sock_fd, SIOCDARP, (caddr_t)&arpreq) < 0) { ++ warn("Couldn't delete proxy arp entry: %m"); ++ return 0; ++ } ++ proxy_arp_addr = 0; ++ return 1; ++} ++#endif /* RTM_VERSION */ ++ ++ ++/* ++ * 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) { ++ error("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; ++ } ++ info("found interface %s for proxy arp", ifa->ifa_name); ++ ++ ifp = ifa; ++ ++ /* ++ * Now scan through again looking for a link-level address ++ * for this interface. ++ */ ++ 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; ++} ++ ++/* ++ * get_if_hwaddr - get the hardware address for the specified ++ * network interface device. ++ */ ++int ++get_if_hwaddr(addr, name) ++ u_char *addr; ++ char *name; ++{ ++ struct ifreq ifreq; ++ struct sockaddr_dl *sdl = (struct sockaddr_dl *) &ifreq.ifr_addr; ++ int fd; ++ ++ if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) == -1) ++ return 0; ++ (void)memset(sdl, 0, sizeof(*sdl)); ++ sdl->sdl_family = AF_LINK; ++ (void)strlcpy(ifreq.ifr_name, name, sizeof(ifreq.ifr_name)); ++ if (ioctl(fd, SIOCGIFADDR, &ifreq) == -1) { ++ (void)close(fd); ++ return 0; ++ } ++ (void)close(fd); ++ (void)memcpy(addr, LLADDR(sdl), sdl->sdl_alen); ++ return sdl->sdl_nlen; ++} ++ ++/* ++ * get_first_ethernet - return the name of the first ethernet-style ++ * interface on this system. ++ */ ++char * ++get_first_ethernet() ++{ ++ static char ifname[IFNAMSIZ]; ++ struct ifaddrs *ifap, *ifa; ++ ++ /* ++ * Scan through the system's network interfaces. ++ */ ++ if (getifaddrs(&ifap) != 0) { ++ warn("getifaddrs: %m"); ++ return NULL; ++ } ++ for (ifa = ifap; ifa; ifa = ifa->ifa_next) { ++ /* ++ * Check the interface's internet address. ++ */ ++ if (ifa->ifa_addr->sa_family != AF_INET) ++ 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) { ++ strlcpy(ifname, ifa->ifa_name, sizeof(ifname)); ++ freeifaddrs(ifap); ++ return ifname; ++ } ++ } ++ freeifaddrs(ifap); ++ return NULL; ++} ++ ++/* ++ * 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) { ++ warn("getifaddrs: %m"); ++ return 0; ++ } ++ ++ 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; ++} ++ ++/* ++ * have_route_to - determine if the system has any route to ++ * a given IP address. ++ * For demand mode to work properly, we have to ignore routes ++ * through our own interface. ++ */ ++int have_route_to(u_int32_t addr) ++{ ++ return -1; ++} ++ ++/* ++ * Use the hostid as part of the random number seed. ++ */ ++int ++get_host_seed() ++{ ++ return gethostid(); ++} ++ ++#if 0 ++/* ++ * lock - create a lock file for the named lock device ++ */ ++#define LOCK_PREFIX "/var/spool/lock/LCK.." ++ ++static char *lock_file; /* name of lock file created */ ++ ++int ++lock(dev) ++ char *dev; ++{ ++ char hdb_lock_buffer[12]; ++ int fd, pid, n; ++ char *p; ++ size_t l; ++ ++ if ((p = strrchr(dev, '/')) != NULL) ++ dev = p + 1; ++ l = strlen(LOCK_PREFIX) + strlen(dev) + 1; ++ lock_file = malloc(l); ++ if (lock_file == NULL) ++ novm("lock file name"); ++ slprintf(lock_file, l, "%s%s", 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) { ++ error("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); ++ notice("Removed stale lock on %s (pid %d)", ++ dev, pid); ++ continue; ++ } else ++ warn("Couldn't remove stale lock on %s", ++ dev); ++ } else ++ notice("Device %s is locked by pid %d", ++ dev, pid); ++ } ++ close(fd); ++ } else ++ error("Can't create lock file %s: %m", lock_file); ++ free(lock_file); ++ lock_file = NULL; ++ return -1; ++ } ++ ++ slprintf(hdb_lock_buffer, sizeof(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; ++ } ++} ++#endif |