diff options
Diffstat (limited to 'scripts/vyatta_net_name')
-rwxr-xr-x | scripts/vyatta_net_name | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/scripts/vyatta_net_name b/scripts/vyatta_net_name deleted file mode 100755 index d61ac6a3..00000000 --- a/scripts/vyatta_net_name +++ /dev/null @@ -1,278 +0,0 @@ -#! /usr/bin/perl - -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License version 2 as -# published by the Free Software Foundation. -# -# This program is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# This code was originally developed by Vyatta, Inc. -# Portions created by Vyatta are Copyright (C) 2010 Vyatta, Inc. -# All Rights Reserved. - -use strict; -use lib "/opt/vyatta/share/perl5/"; -use XorpConfigParser; -use Vyatta::Config; -use Sys::Syslog qw(:standard :macros); -use Fcntl qw(:flock); - -my $BOOTFILE = "/opt/vyatta/etc/config/config.boot"; -my $VYATTACFG = "/opt/vyatta/config/active/interfaces"; - -my $UDEVDIR = "/run/udev/"; -my $VYATTAUDEV = $UDEVDIR . "vyatta"; -my $LOCKFILE = $UDEVDIR . ".vyatta-lock"; -my $UDEVLOG = $UDEVDIR . "log/"; -my $LOGFILE = $UDEVLOG . "vyatta-net-name.coldplug"; - -# Check if interface name is free to use -sub is_available { - my ($interfaces, $ifname) = @_; - - my $count = grep { $_ eq $ifname } values %$interfaces; - return ($count == 0); -} - -# Find next available interface name -sub find_available { - my ($interfaces, $ifprefix) = @_; - $ifprefix =~ s/\d+$//; - - for (my $id = 0; ; $id++) { - my $ifname = sprintf("%s%d", $ifprefix, $id); - - # is it in Vyatta config? - return $ifname if (is_available($interfaces, $ifname)); - } -} - -# Find the hardware id in the parsed config node for interface -sub get_hwid_from_children { - my $children = shift; - - foreach my $attr (@$children) { - next unless (($attr->{'name'} =~ /^hw-id ([0-9a-f:]+)/) || ($attr->{'name'} =~ /^hw-id "([0-9a-f:]+)"/)); - return $1; - } - - return; # not found -} - - -# Leave file for vyatta_interface_rescan -sub leave_rescan_hint { - my ($ifname, $hwaddr) = @_; - my $name = "$VYATTAUDEV/$ifname"; - - mkdir($VYATTAUDEV); - open (my $f, '>', $name) - or die "Can't create $name : $!"; - - print {$f} "$hwaddr\n"; - close $f; - return 1; -} - -# Use biosdevname program (ethernet only) -# to try and find name based on PCI slot and DMI info -sub biosdevname { - my $ifname = shift; - - # biosdevname works only on ethernet devices - return $ifname unless ($ifname =~ /^eth/); - - # Don't use biosdevname in Xen - return $ifname if ( -d "/proc/xen" ); - - # Let the interface name changes ordered by previous invocations of this - # script complete before we call biosdevname. If we don't, biosdevame - # may generate incorrect name. - sleep 1; - - my $biosname = `/sbin/biosdevname --policy all_ethN -i $ifname 2>/dev/null`; - chomp $biosname; - - # if biosdevname has no answer it outputs a nothing - return ($biosname eq '') ? $ifname : $biosname; -} - -# parse vyatta config.boot -# if file does not then running before off livecd then return empty hash -sub parse_config_boot { - my $interfaces = {}; - - if ( -f $BOOTFILE ) { - my $xcp = new XorpConfigParser(); - $xcp->parse($BOOTFILE); - - my $inode = $xcp->get_node(['interfaces']); - if ($inode) { - foreach my $child (@{$inode->{'children'}}) { - # is hwid defined in config? - my $hwid = get_hwid_from_children($child->{'children'}); - next unless $hwid; - - # split into type 'ethernet' and 'eth0' - my ($type, $intf) = ($child->{'name'} =~ /^(\w+) (\w+)/); - next unless defined($type); - next unless ($type eq 'ethernet') || ($type eq 'wireless'); - - $interfaces->{$hwid} = $intf; - } - } - } - - return $interfaces; -} - -sub logit { - my ($log, $msg) = @_; - my $now = localtime; - print $log "$now: $msg"; -} - -# Determine network name to use based on Vyatta config during boot -sub coldplug { - my ($ifname, $hwaddr, $predef_ifname) = @_; - - # at this time root directory is read-only so use log file instead - mkdir ($UDEVLOG); - open (my $log, '>>', $LOGFILE) - or die "Can't open $LOGFILE : $!"; - logit($log, "lookup $ifname $hwaddr\n"); - - # parse config file to produce map of existing hw-id values - my $interfaces = parse_config_boot(); - - # is name already in config file - my $newname = $interfaces->{$hwaddr}; - if ($newname) { - logit($log, "use hw-id $hwaddr in config mapped to '$newname'\n"); - return $newname; - } - - # add already assigned names - if (opendir(my $dir, $VYATTAUDEV)) { - foreach my $intf (grep { ! /^\./ } readdir($dir)) { - if (open (my $f, '<', "$VYATTAUDEV/$intf")) { - my $hwid = <$f>; - close $f; - chomp $hwid; - - $interfaces->{$hwid} = $intf; - } - } - } - - if ($predef_ifname) { - $newname = $predef_ifname; - logit($log, "predefined interface name for $ifname returned '$newname'\n"); - } - else { - $newname = biosdevname($ifname); - logit($log, "biosdevname for $ifname returned '$newname'\n"); - } - - unless (is_available($interfaces, $newname)) { - $newname = find_available($interfaces, $newname); - } - - logit($log, "new name for '$ifname' is '$newname'\n"); - close $log; - - leave_rescan_hint($newname, $hwaddr); - - return $newname; -} - -# Determine name from active config -sub hotplug { - my ($ifname, $hwaddr, $predef_ifname) = @_; - - # real filesystem available use real logging - openlog("vyatta-net-name", "", LOG_DAEMON); - - # Parse active config - my $cfg = new Vyatta::Config; - $cfg->setLevel('interfaces'); - - my $interfaces = {}; - foreach my $type ($cfg->listOrigNodes()) { - next unless ($type eq 'ethernet') || ($type eq 'wireless'); - foreach my $intf ($cfg->listOrigNodes($type)) { - my $hwid = $cfg->returnOrigValue("$type $intf hw-id"); - next unless $hwid; - # TBD this could be a hash with name and path? - $interfaces->{$hwid} = $intf; - } - } - - my $newname = $interfaces->{$hwaddr}; - if ($newname) { - syslog(LOG_DEBUG, "use hw-id %s in config mapped to '%s'", $hwaddr, $newname); - return $newname; - } - - if ($predef_ifname) { - $newname = $predef_ifname; - syslog(LOG_DEBUG, "predefined interface name for %s returned '%s'", $ifname, $newname); - } - else{ - $newname = biosdevname($ifname); - syslog(LOG_DEBUG, "biosdevname for %s returned '%s'", $ifname, $newname); - } - - unless (is_available($interfaces, $newname)) { - $newname = find_available($interfaces, $newname); - } - - syslog(LOG_INFO, "new name for '%s' is '%s'", $ifname, $newname); - - return $newname; -} - -my $LOCKF; -sub lock_file { - open ($LOCKF, '>', $LOCKFILE) - or die "Can't open $LOCKFILE : $!"; - - flock ($LOCKF, LOCK_EX) - or die "Can't lock $LOCKFILE : $!"; - -} - -sub unlock_file { - close $LOCKF; - $LOCKF = undef; -} - -# This script is called from udev with two or three arguments -# it outputs the new name (if any) to stdout -if ($#ARGV > 2 or $#ARGV < 1) { - die "vyatta_net_name called with wrong args:" . join(' ', @ARGV) . "\n"; -} - -my $ifname = $ARGV[0]; -my $hwaddr = $ARGV[1]; - -my $predef_ifname = ""; -if ($ARGV[2]){ - $predef_ifname = $ARGV[2]; -} - -lock_file; -my $newname; -if ( -d $VYATTACFG ) { - $newname = hotplug($ifname, $hwaddr, $predef_ifname); -} else { - $newname = coldplug($ifname, $hwaddr, $predef_ifname); -} -unlock_file; - -print "$newname\n" if ($newname); - -exit 0; |