src/PVE/INotify.pm

   1 package PVE::INotify;
   2
   3 # todo: maybe we do not need update_file() ?
   4
   5 use strict;
   6 use warnings;
   7
   8 use POSIX;
   9 use IO::File;
  10 use IO::Dir;
  11 use File::stat;
  12 use File::Basename;
  13 use Fcntl qw(:DEFAULT :flock);
  14 use PVE::SafeSyslog;
  15 use PVE::Exception qw(raise_param_exc);
  16 use PVE::Network;
  17 use PVE::Tools;
  18 use PVE::ProcFSTools;
  19 use Clone qw(clone);
  20 use Linux::Inotify2;
  21 use base 'Exporter';
  22 use JSON;
  23 use Encode qw(encode decode);
  24
  25 our @EXPORT_OK = qw(read_file write_file register_file);
  26
  27 my $ccache;
  28 my $ccachemap;
  29 my $ccacheregex;
  30 my $inotify;
  31 my $inotify_pid = 0;
  32 my $versions;
  33 my $shadowfiles = {
  34     '/etc/network/interfaces' => '/etc/network/interfaces.new',
  35 };
  36
  37 # to enable cached operation, you need to call 'inotify_init'
  38 # inotify handles are a limited resource, so use with care (only
  39 # enable the cache if you really need it)
  40
  41 # Note: please close the inotify handle after you fork
  42
  43 sub ccache_default_writer {
  44     my ($filename, $data) = @_;
  45
  46     die "undefined config writer for '$filename' :ERROR";
  47 }
  48
  49 sub ccache_default_parser {
  50     my ($filename, $srcfd) = @_;
  51
  52     die "undefined config reader for '$filename' :ERROR";
  53 }
  54
  55 sub ccache_compute_diff {
  56     my ($filename, $shadow) = @_;
  57
  58     my $diff = '';
  59
  60     my $cmd = ['/usr/bin/diff', '-b', '-N', '-u', $filename, $shadow];
  61     PVE::Tools::run_command($cmd, noerr => 1, outfunc => sub {
  62         my ($line) = @_;
  63         $diff .= decode('UTF-8', $line) . "\n";
  64     });
  65
  66     $diff = undef if !$diff;
  67
  68     return $diff;
  69 }
  70
  71 sub ccache_info {
  72     my ($filename) = @_;
  73
  74     foreach my $uid (keys %$ccacheregex) {
  75         my $ccinfo = $ccacheregex->{$uid};
  76         my $dir = $ccinfo->{dir};
  77         my $regex = $ccinfo->{regex};
  78         if ($filename =~ m|^$dir/+$regex$|) {
  79             if (!$ccache->{$filename}) {
  80                 my $cp = {};
  81                 while (my ($k, $v) = each %$ccinfo) {
  82                     $cp->{$k} = $v;
  83                 }
  84                 $ccache->{$filename} = $cp;
  85             }
  86             return ($ccache->{$filename}, $filename);
  87         }
  88     }
  89
  90     $filename = $ccachemap->{$filename} if defined ($ccachemap->{$filename});
  91
  92     die "file '$filename' not added :ERROR" if !defined ($ccache->{$filename});
  93
  94     return ($ccache->{$filename}, $filename);
  95 }
  96
  97 sub write_file {
  98     my ($fileid, $data, $full) = @_;
  99
 100     my ($ccinfo, $filename) = ccache_info($fileid);
 101
 102     my $writer = $ccinfo->{writer};
 103
 104     my $realname = $filename;
 105
 106     my $shadow;
 107     if ($shadow = $shadowfiles->{$filename}) {
 108         $realname = $shadow;
 109     }
 110
 111     my $perm = $ccinfo->{perm} || 0644;
 112
 113     my $tmpname = "$realname.tmp.$$";
 114
 115     my $res;
 116     eval {
 117         my $fh = IO::File->new($tmpname, O_WRONLY|O_CREAT, $perm);
 118         die "unable to open file '$tmpname' - $!\n" if !$fh;
 119
 120         $res = &$writer($filename, $fh, $data);
 121
 122         die "closing file '$tmpname' failed - $!\n" unless close $fh;
 123     };
 124     my $err = $@;
 125
 126     $ccinfo->{version} = undef;
 127
 128     if ($err) {
 129         unlink $tmpname;
 130         die $err;
 131     }
 132
 133     if (!rename($tmpname, $realname)) {
 134         my $msg = "close (rename) atomic file '$filename' failed: $!\n";
 135         unlink $tmpname;
 136         die $msg;
 137     }
 138
 139     my $diff;
 140     if ($shadow && $full) {
 141         $diff = ccache_compute_diff ($filename, $shadow);
 142     }
 143
 144     if ($full) {
 145         return { data => $res, changes => $diff };
 146     }
 147
 148     return $res;
 149 }
 150
 151 sub update_file {
 152     my ($fileid, $data, @args) = @_;
 153
 154     my ($ccinfo, $filename) = ccache_info($fileid);
 155
 156     my $update = $ccinfo->{update};
 157
 158     die "unable to update/merge data" if !$update;
 159
 160     my $lkfn = "$filename.lock";
 161
 162     my $timeout = 10;
 163
 164     my $fd;
 165
 166     my $code = sub {
 167
 168         $fd = IO::File->new ($filename, "r");
 169
 170         my $new = &$update($filename, $fd, $data, @args);
 171
 172         if (defined($new)) {
 173             PVE::Tools::file_set_contents($filename, $new, $ccinfo->{perm});
 174         } else {
 175             unlink $filename;
 176         }
 177     };
 178
 179     PVE::Tools::lock_file($lkfn, $timeout, $code);
 180     my $err = $@;
 181
 182     close($fd) if defined($fd);
 183
 184     die $err if $err;
 185
 186     return undef;
 187 }
 188
 189 sub discard_changes {
 190     my ($fileid, $full) = @_;
 191
 192     my ($ccinfo, $filename) = ccache_info($fileid);
 193
 194     if (my $copy = $shadowfiles->{$filename}) {
 195         unlink $copy;
 196     }
 197
 198     return read_file ($filename, $full);
 199 }
 200
 201 sub poll_changes {
 202     my ($filename) = @_;
 203
 204     poll() if $inotify; # read new inotify events
 205
 206     $versions->{$filename} = 0 if !defined ($versions->{$filename});
 207
 208     return $versions->{$filename};
 209 }
 210
 211 sub read_file {
 212     my ($fileid, $full) = @_;
 213
 214     my $parser;
 215
 216     my ($ccinfo, $filename) = ccache_info($fileid);
 217
 218     $parser = $ccinfo->{parser};
 219
 220     my $fd;
 221     my $shadow;
 222
 223     my $cver = poll_changes($filename);
 224
 225     if (my $copy = $shadowfiles->{$filename}) {
 226         if ($fd = IO::File->new ($copy, "r")) {
 227             $shadow = $copy;
 228         } else {
 229             $fd = IO::File->new ($filename, "r");
 230         }
 231     } else {
 232         $fd = IO::File->new ($filename, "r");
 233     }
 234
 235     my $acp = $ccinfo->{always_call_parser};
 236
 237     if (!$fd) {
 238         $ccinfo->{version} = undef;
 239         $ccinfo->{data} = undef;
 240         $ccinfo->{diff} = undef;
 241         return undef if !$acp;
 242     }
 243
 244     my $noclone = $ccinfo->{noclone};
 245
 246     # file unchanged?
 247     if (!$ccinfo->{nocache} &&
 248         $inotify && $cver &&
 249         defined ($ccinfo->{data}) &&
 250         defined ($ccinfo->{version}) &&
 251         ($ccinfo->{readonce} ||
 252          ($ccinfo->{version} == $cver))) {
 253
 254         my $ret;
 255         if (!$noclone && ref ($ccinfo->{data})) {
 256             $ret->{data} = clone ($ccinfo->{data});
 257         } else {
 258             $ret->{data} = $ccinfo->{data};
 259         }
 260         $ret->{changes} = $ccinfo->{diff};
 261
 262         return $full ? $ret : $ret->{data};
 263     }
 264
 265     my $diff;
 266
 267     if ($shadow) {
 268         $diff = ccache_compute_diff ($filename, $shadow);
 269     }
 270
 271     my $res = &$parser($filename, $fd);
 272
 273     if (!$ccinfo->{nocache}) {
 274         $ccinfo->{version} = $cver;
 275     }
 276
 277     # we cache data with references, so we always need to
 278     # clone this data. Else the original data may get
 279     # modified.
 280     $ccinfo->{data} = $res;
 281
 282     # also store diff
 283     $ccinfo->{diff} = $diff;
 284
 285     my $ret;
 286     if (!$noclone && ref ($ccinfo->{data})) {
 287         $ret->{data} = clone ($ccinfo->{data});
 288     } else {
 289         $ret->{data} = $ccinfo->{data};
 290     }
 291     $ret->{changes} = $ccinfo->{diff};
 292
 293     return $full ? $ret : $ret->{data};
 294 }
 295
 296 sub parse_ccache_options {
 297     my ($ccinfo, %options) = @_;
 298
 299     foreach my $opt (keys %options) {
 300         my $v = $options{$opt};
 301         if ($opt eq 'readonce') {
 302             $ccinfo->{$opt} = $v;
 303         } elsif ($opt eq 'nocache') {
 304             $ccinfo->{$opt} = $v;
 305         } elsif ($opt eq 'shadow') {
 306             $ccinfo->{$opt} = $v;
 307         } elsif ($opt eq 'perm') {
 308             $ccinfo->{$opt} = $v;
 309         } elsif ($opt eq 'noclone') {
 310             # noclone flag for large read-only data chunks like aplinfo
 311             $ccinfo->{$opt} = $v;
 312         } elsif ($opt eq 'always_call_parser') {
 313             # when set, we call parser even when the file does not exists.
 314             # this allows the parser to return some default
 315             $ccinfo->{$opt} = $v;
 316         } else {
 317             die "internal error - unsupported option '$opt'";
 318         }
 319     }
 320 }
 321
 322 sub register_file {
 323     my ($id, $filename, $parser, $writer, $update, %options) = @_;
 324
 325     die "can't register file '$filename' after inotify_init" if $inotify;
 326
 327     die "file '$filename' already added :ERROR" if defined ($ccache->{$filename});
 328     die "ID '$id' already used :ERROR" if defined ($ccachemap->{$id});
 329
 330     my $ccinfo = {};
 331
 332     $ccinfo->{id} = $id;
 333     $ccinfo->{parser} = $parser || \&ccache_default_parser;
 334     $ccinfo->{writer} = $writer || \&ccache_default_writer;
 335     $ccinfo->{update} = $update;
 336
 337     parse_ccache_options($ccinfo, %options);
 338
 339     if ($options{shadow}) {
 340         $shadowfiles->{$filename} = $options{shadow};
 341     }
 342
 343     $ccachemap->{$id} = $filename;
 344     $ccache->{$filename} = $ccinfo;
 345 }
 346
 347 sub register_regex {
 348     my ($dir, $regex, $parser, $writer, $update, %options) = @_;
 349
 350     die "can't register regex after inotify_init" if $inotify;
 351
 352     my $uid = "$dir/$regex";
 353     die "regular expression '$uid' already added :ERROR" if defined ($ccacheregex->{$uid});
 354
 355     my $ccinfo = {};
 356
 357     $ccinfo->{dir} = $dir;
 358     $ccinfo->{regex} = $regex;
 359     $ccinfo->{parser} = $parser || \&ccache_default_parser;
 360     $ccinfo->{writer} = $writer || \&ccache_default_writer;
 361     $ccinfo->{update} = $update;
 362
 363     parse_ccache_options($ccinfo, %options);
 364
 365     $ccacheregex->{$uid} = $ccinfo;
 366 }
 367
 368 sub poll {
 369     return if !$inotify;
 370
 371     if ($inotify_pid != $$) {
 372         syslog ('err', "got inotify poll request in wrong process - disabling inotify");
 373         $inotify = undef;
 374     } else {
 375         1 while $inotify && $inotify->poll;
 376     }
 377 }
 378
 379 sub flushcache {
 380     foreach my $filename (keys %$ccache) {
 381         $ccache->{$filename}->{version} = undef;
 382         $ccache->{$filename}->{data} = undef;
 383         $ccache->{$filename}->{diff} = undef;
 384     }
 385 }
 386
 387 sub inotify_close {
 388     $inotify = undef;
 389 }
 390
 391 sub inotify_init {
 392
 393     die "only one inotify instance allowed" if $inotify;
 394
 395     $inotify =  Linux::Inotify2->new()
 396         || die "Unable to create new inotify object: $!";
 397
 398     $inotify->blocking (0);
 399
 400     $versions = {};
 401
 402     my $dirhash = {};
 403     foreach my $fn (keys %$ccache) {
 404         my $dir = dirname ($fn);
 405         my $base = basename ($fn);
 406
 407         $dirhash->{$dir}->{$base} = $fn;
 408
 409         if (my $sf = $shadowfiles->{$fn}) {
 410             $base = basename ($sf);
 411             $dir = dirname ($sf);
 412             $dirhash->{$dir}->{$base} = $fn; # change version of original file!
 413         }
 414     }
 415
 416     foreach my $uid (keys %$ccacheregex) {
 417         my $ccinfo = $ccacheregex->{$uid};
 418         $dirhash->{$ccinfo->{dir}}->{_regex} = 1;
 419     }
 420
 421     $inotify_pid = $$;
 422
 423     foreach my $dir (keys %$dirhash) {
 424
 425         my $evlist = IN_MODIFY|IN_ATTRIB|IN_MOVED_FROM|IN_MOVED_TO|IN_DELETE|IN_CREATE;
 426         $inotify->watch ($dir, $evlist, sub {
 427             my $e = shift;
 428             my $name = $e->name;
 429
 430             if ($inotify_pid != $$) {
 431                 syslog ('err', "got inotify event in wrong process");
 432             }
 433
 434             if ($e->IN_ISDIR || !$name) {
 435                 return;
 436             }
 437
 438             if ($e->IN_Q_OVERFLOW) {
 439                 syslog ('info', "got inotify overflow - flushing cache");
 440                 flushcache();
 441                 return;
 442             }
 443
 444             if ($e->IN_UNMOUNT) {
 445                 syslog ('err', "got 'unmount' event on '$name' - disabling inotify");
 446                 $inotify = undef;
 447             }
 448             if ($e->IN_IGNORED) {
 449                 syslog ('err', "got 'ignored' event on '$name' - disabling inotify");
 450                 $inotify = undef;
 451             }
 452
 453             if ($dirhash->{$dir}->{_regex}) {
 454                 foreach my $uid (keys %$ccacheregex) {
 455                     my $ccinfo = $ccacheregex->{$uid};
 456                     next if $dir ne $ccinfo->{dir};
 457                     my $regex = $ccinfo->{regex};
 458                     if ($regex && ($name =~ m|^$regex$|)) {
 459
 460                         my $fn = "$dir/$name";
 461                         $versions->{$fn}++;
 462                         #print "VERSION:$fn:$versions->{$fn}\n";
 463                     }
 464                 }
 465             } elsif (my $fn = $dirhash->{$dir}->{$name}) {
 466
 467                 $versions->{$fn}++;
 468                 #print "VERSION:$fn:$versions->{$fn}\n";
 469             }
 470         });
 471     }
 472
 473     foreach my $dir (keys %$dirhash) {
 474         foreach my $name (keys %{$dirhash->{$dir}}) {
 475             if ($name eq '_regex') {
 476                 foreach my $uid (keys %$ccacheregex) {
 477                     my $ccinfo = $ccacheregex->{$uid};
 478                     next if $dir ne $ccinfo->{dir};
 479                     my $re = $ccinfo->{regex};
 480                     if (my $fd = IO::Dir->new ($dir)) {
 481                         while (defined(my $de = $fd->read)) {
 482                             if ($de =~ m/^$re$/) {
 483                                 my $fn = "$dir/$de";
 484                                 $versions->{$fn}++; # init with version
 485                                 #print "init:$fn:$versions->{$fn}\n";
 486                             }
 487                         }
 488                     }
 489                 }
 490             } else {
 491                 my $fn = $dirhash->{$dir}->{$name};
 492                 $versions->{$fn}++; # init with version
 493                 #print "init:$fn:$versions->{$fn}\n";
 494             }
 495         }
 496     }
 497 }
 498
 499 my $cached_nodename;
 500
 501 sub nodename {
 502
 503     return $cached_nodename if $cached_nodename;
 504
 505     my ($sysname, $nodename) = POSIX::uname();
 506
 507     $nodename =~ s/\..*$//; # strip domain part, if any
 508
 509     die "unable to read node name\n" if !$nodename;
 510
 511     $cached_nodename = $nodename;
 512
 513     return $cached_nodename;
 514 }
 515
 516 sub read_etc_hostname {
 517     my ($filename, $fd) = @_;
 518
 519     my $hostname = <$fd>;
 520
 521     chomp $hostname;
 522
 523     $hostname =~ s/\..*$//; # strip domain part, if any
 524
 525     return $hostname;
 526 }
 527
 528 sub write_etc_hostname {
 529     my ($filename, $fh, $hostname) = @_;
 530
 531     die "write failed: $!" unless print $fh "$hostname\n";
 532
 533     return $hostname;
 534 }
 535
 536 register_file('hostname', "/etc/hostname",
 537               \&read_etc_hostname,
 538               \&write_etc_hostname);
 539
 540 sub read_etc_resolv_conf {
 541     my ($filename, $fh) = @_;
 542
 543     my $res = {};
 544
 545     my $nscount = 0;
 546     while (my $line = <$fh>) {
 547         chomp $line;
 548         if ($line =~ m/^(search|domain)\s+(\S+)\s*/) {
 549             $res->{search} = $2;
 550         } elsif ($line =~ m/^\s*nameserver\s+($PVE::Tools::IPRE)\s*/) {
 551             $nscount++;
 552             if ($nscount <= 3) {
 553                 $res->{"dns$nscount"} = $1;
 554             }
 555         }
 556     }
 557
 558     return $res;
 559 }
 560
 561 sub update_etc_resolv_conf {
 562     my ($filename, $fh, $resolv, @args) = @_;
 563
 564     my $data = "";
 565
 566     $data = "search $resolv->{search}\n"
 567         if $resolv->{search};
 568
 569     my $written = {};
 570     foreach my $k ("dns1", "dns2", "dns3") {
 571         my $ns = $resolv->{$k};
 572         if ($ns && $ns ne '0.0.0.0' && !$written->{$ns}) {
 573             $written->{$ns} = 1;
 574             $data .= "nameserver $ns\n";
 575         }
 576     }
 577
 578     while (my $line = <$fh>) {
 579         next if $line =~ m/^(search|domain|nameserver)\s+/;
 580         $data .= $line
 581     }
 582
 583     return $data;
 584 }
 585
 586 register_file('resolvconf', "/etc/resolv.conf",
 587               \&read_etc_resolv_conf, undef,
 588               \&update_etc_resolv_conf);
 589
 590 sub read_etc_timezone {
 591     my ($filename, $fd) = @_;
 592
 593     my $timezone = <$fd>;
 594
 595     chomp $timezone;
 596
 597     return $timezone;
 598 }
 599
 600 sub write_etc_timezone {
 601     my ($filename, $fh, $timezone) = @_;
 602
 603     my $tzinfo = "/usr/share/zoneinfo/$timezone";
 604
 605     raise_param_exc({ 'timezone' => "No such timezone" })
 606         if (! -f $tzinfo);
 607
 608     ($timezone) = $timezone =~ m/^(.*)$/; # untaint
 609
 610     print $fh "$timezone\n";
 611
 612     unlink ("/etc/localtime");
 613     symlink ("/usr/share/zoneinfo/$timezone", "/etc/localtime");
 614
 615 }
 616
 617 register_file('timezone', "/etc/timezone",
 618               \&read_etc_timezone,
 619               \&write_etc_timezone);
 620
 621 sub read_active_workers {
 622     my ($filename, $fh) = @_;
 623
 624     return [] if !$fh;
 625
 626     my $res = [];
 627     while (defined (my $line = <$fh>)) {
 628         if ($line =~ m/^(\S+)\s(0|1)(\s([0-9A-Za-z]{8})(\s(\s*\S.*))?)?$/) {
 629             my $upid = $1;
 630             my $saved = $2;
 631             my $endtime = $4;
 632             my $status = $6;
 633             if ((my $task = PVE::Tools::upid_decode($upid, 1))) {
 634                 $task->{upid} = $upid;
 635                 $task->{saved} = $saved;
 636                 $task->{endtime} = hex($endtime) if $endtime;
 637                 $task->{status} = $status if $status;
 638                 push @$res, $task;
 639             }
 640         } else {
 641             warn "unable to parse line: $line";
 642         }
 643     }
 644
 645     return $res;
 646
 647 }
 648
 649 sub write_active_workers {
 650     my ($filename, $fh, $tasklist) = @_;
 651
 652     my $raw = '';
 653     foreach my $task (@$tasklist) {
 654         my $upid = $task->{upid};
 655         my $saved = $task->{saved} ? 1 : 0;
 656         if ($task->{endtime}) {
 657             if ($task->{status}) {
 658                 $raw .= sprintf("%s %s %08X %s\n", $upid, $saved, $task->{endtime}, $task->{status});
 659             } else {
 660                 $raw .= sprintf("%s %s %08X\n", $upid, $saved, $task->{endtime});
 661             }
 662         } else {
 663             $raw .= "$upid $saved\n";
 664         }
 665     }
 666
 667     PVE::Tools::safe_print($filename, $fh, $raw) if $raw;
 668 }
 669
 670 register_file('active', "/var/log/pve/tasks/active",
 671               \&read_active_workers,
 672               \&write_active_workers);
 673
 674
 675 our $bond_modes = { 'balance-rr' => 0,
 676                    'active-backup' => 1,
 677                    'balance-xor' => 2,
 678                    'broadcast' => 3,
 679                    '802.3ad' => 4,
 680                    'balance-tlb' => 5,
 681                    'balance-alb' => 6,
 682                };
 683
 684 my $ovs_bond_modes = {
 685     'active-backup' => 1,
 686     'balance-slb' => 1,
 687     'lacp-balance-slb' => 1,
 688     'lacp-balance-tcp' => 1,
 689 };
 690
 691 #sub get_bond_modes {
 692 #    return $bond_modes;
 693 #}
 694
 695 my $parse_ovs_option = sub {
 696     my ($data) = @_;
 697
 698     my $opts = {};
 699     foreach my $kv (split (/\s+/, $data || '')) {
 700         my ($k, $v) = split('=', $kv, 2);
 701         $opts->{$k} = $v if $k && $v;
 702     }
 703     return $opts;
 704 };
 705
 706 my $set_ovs_option = sub {
 707     my ($d, %params) = @_;
 708
 709     my $opts = &$parse_ovs_option($d->{ovs_options});
 710
 711     foreach my $k (keys %params) {
 712         my $v = $params{$k};
 713         if ($v) {
 714             $opts->{$k} = $v;
 715         } else {
 716             delete $opts->{$k};
 717         }
 718     }
 719
 720     my $res = [];
 721     foreach my $k (keys %$opts) {
 722         push @$res, "$k=$opts->{$k}";
 723     }
 724
 725     if (my $new = join(' ', @$res)) {
 726         $d->{ovs_options} = $new;
 727         return $d->{ovs_options};
 728     } else {
 729         delete $d->{ovs_options};
 730         return undef;
 731     }
 732 };
 733
 734 my $extract_ovs_option = sub {
 735     my ($d, $name) = @_;
 736
 737     my $opts = &$parse_ovs_option($d->{ovs_options});
 738
 739     my $v = delete $opts->{$name};
 740
 741     my $res = [];
 742     foreach my $k (keys %$opts) {
 743         push @$res, "$k=$opts->{$k}";
 744     }
 745
 746     if (my $new = join(' ', @$res)) {
 747         $d->{ovs_options} = $new;
 748     } else {
 749         delete $d->{ovs_options};
 750     }
 751
 752     return $v;
 753 };
 754
 755 my $check_mtu = sub {
 756     my ($ifaces, $parent, $child) = @_;
 757
 758     die "check mtu - missing parent interface\n" if !$parent;
 759     die "check mtu - missing child interface\n" if !$child;
 760
 761     my $cmtu = $ifaces->{$child}->{mtu};
 762     return if !$cmtu;
 763
 764     my $parentdata = $ifaces->{$parent};
 765     my $pmtu = $parentdata->{mtu};
 766     $pmtu = $cmtu if $parentdata->{type} eq 'bond' && !$pmtu;
 767     $pmtu = 1500 if !$pmtu;
 768
 769     die "interface '$parent' - mtu $pmtu is lower than '$child' - mtu $cmtu\n"
 770         if $pmtu < $cmtu;
 771 };
 772
 773 # config => {
 774 #   ifaces => {
 775 #     $ifname => {
 776 #       <optional> exists => BOOL,
 777 #       <optional> active => BOOL,
 778 #       <optional> autostart => BOOL,
 779 #       <auto> priority => INT,
 780 #
 781 #       type => "eth" | "bridge" | "bond" | "loopback" | "OVS*" | ... ,
 782 #
 783 #       families => ["inet", "inet6", ...],
 784 #
 785 #       method => "manual" | "static" | "dhcp" | ... ,
 786 #       address => IP,
 787 #       netmask => SUBNET,
 788 #       broadcast => IP,
 789 #       gateway => IP,
 790 #       comments => [ "..." ],
 791 #
 792 #       method6 => "manual" | "static" | "dhcp" | ... ,
 793 #       address6 => IP,
 794 #       netmask6 => SUBNET,
 795 #       gateway6 => IP,
 796 #       comments6 => [ "..." ],
 797 #
 798 #       <known options>, # like bridge_ports, ovs_*
 799 #
 800 #       # extra/unknown options stored by-family:
 801 #       options => { <inet options>... }
 802 #       options6 => { <inet6 options>... }
 803 #     }
 804 #   },
 805 #   options => [
 806 #     # mappings end up here as well, as we don't need to understand them
 807 #     [priority,line]
 808 #   ]
 809 # }
 810 sub read_etc_network_interfaces {
 811     my ($filename, $fh) = @_;
 812     my $proc_net_dev = IO::File->new('/proc/net/dev', 'r');
 813     my $active = PVE::ProcFSTools::get_active_network_interfaces();
 814     return __read_etc_network_interfaces($fh, $proc_net_dev, $active);
 815 }
 816
 817 sub __read_etc_network_interfaces {
 818     my ($fh, $proc_net_dev, $active_ifaces) = @_;
 819
 820     my $config = {};
 821     my $ifaces = $config->{ifaces} = {};
 822     my $options = $config->{options} = [];
 823
 824     my $options_alternatives = {
 825         'bond-slaves' => 'slaves',
 826         'bond_slaves' => 'slaves',
 827         'bond-xmit-hash-policy' => 'bond_xmit_hash_policy',
 828         'bond-mode' => 'bond_mode',
 829         'bond-miimon' =>'bond_miimon',
 830         'bridge-vlan-aware' => 'bridge_vlan_aware',
 831         'bridge-fd' => 'bridge_fd',
 832         'bridge-stp' => 'bridge_stp',
 833         'bridge-ports' => 'bridge_ports',
 834         'bridge-vids' => 'bridge_vids'
 835     };
 836
 837     my $line;
 838
 839     if ($proc_net_dev) {
 840         while (defined ($line = <$proc_net_dev>)) {
 841             if ($line =~ m/^\s*($PVE::Network::PHYSICAL_NIC_RE):.*/) {
 842                 $ifaces->{$1}->{exists} = 1;
 843             }
 844         }
 845         close($proc_net_dev);
 846     }
 847
 848     # we try to keep order inside the file
 849     my $priority = 2; # 1 is reserved for lo
 850
 851     SECTION: while (defined ($line = <$fh>)) {
 852         chomp ($line);
 853         next if $line =~ m/^\s*#/;
 854
 855         if ($line =~ m/^\s*auto\s+(.*)$/) {
 856             my @aa = split (/\s+/, $1);
 857
 858             foreach my $a (@aa) {
 859                 $ifaces->{$a}->{autostart} = 1;
 860             }
 861
 862         } elsif ($line =~ m/^\s*iface\s+(\S+)\s+(inet6?)\s+(\S+)\s*$/) {
 863             my $i = $1;
 864             my $family = $2;
 865             my $f = { method => $3 }; # by family, merged to $d with a $suffix
 866             (my $suffix = $family) =~ s/^inet//;
 867
 868             my $d = $ifaces->{$i} ||= {};
 869             $d->{priority} = $priority++ if !$d->{priority};
 870             push @{$d->{families}}, $family;
 871
 872             while (defined ($line = <$fh>)) {
 873                 chomp $line;
 874                 if ($line =~ m/^\s*#(.*?)\s*$/) {
 875                     $f->{comments} = '' if !$f->{comments};
 876                     my $comment = decode('UTF-8', $1);
 877                     $f->{comments} .= "$comment\n";
 878                 } elsif ($line =~ m/^\s*(?:iface\s
 879                                           |mapping\s
 880                                           |auto\s
 881                                           |allow-
 882                                           |source\s
 883                                           |source-directory\s
 884                                         )/x) {
 885                     last;
 886                 } elsif ($line =~ m/^\s*((\S+)\s+(.+))$/) {
 887                     my $option = $1;
 888                     my ($id, $value) = ($2, $3);
 889
 890                     $id = $options_alternatives->{$id} if $options_alternatives->{$id};
 891
 892                     my $simple_options = {
 893                         'mtu' => 1,
 894                         'ovs_type' => 1,
 895                         'ovs_options' => 1,
 896                         'ovs_bridge' => 1,
 897                         'ovs_bonds' => 1,
 898                         'ovs_ports' => 1,
 899                         'bridge_fd' => 1,
 900                         'bridge_vids' => 1,
 901                         'bridge-access' => 1,
 902                         'bridge-learning' => 1,
 903                         'bridge-arp-nd-suppress' => 1,
 904                         'bridge-unicast-flood' => 1,
 905                         'bridge-multicast-flood' => 1,
 906                         'bond_miimon' => 1,
 907                         'bond_xmit_hash_policy' => 1,
 908                         'vxlan-id' => 1,
 909                         'vxlan-svcnodeip' => 1,
 910                         'vxlan-physdev' => 1,
 911                         'vxlan-local-tunnelip' => 1 };
 912
 913                     if (($id eq 'address') || ($id eq 'netmask') || ($id eq 'broadcast') || ($id eq 'gateway')) {
 914                         $f->{$id} = $value;
 915                     } elsif ($simple_options->{$id}) {
 916                         $d->{$id} = $value;
 917                     } elsif ($id eq 'slaves' || $id eq 'bridge_ports') {
 918                         my $devs = {};
 919                         foreach my $p (split (/\s+/, $value)) {
 920                             next if $p eq 'none';
 921                             $devs->{$p} = 1;
 922                         }
 923                         my $str = join (' ', sort keys %{$devs});
 924                         if ($d->{$id}) {
 925                             $d->{$id} .= ' ' . $str if $str;
 926                         } else {
 927                             $d->{$id} = $str || '';
 928                         }
 929                     } elsif ($id eq 'bridge_stp') {
 930                         if ($value =~ m/^\s*(on|yes)\s*$/i) {
 931                             $d->{$id} = 'on';
 932                         } else {
 933                             $d->{$id} = 'off';
 934                         }
 935                     } elsif ($id eq 'bridge_vlan_aware') {
 936                         $d->{$id} = 1;
 937                     } elsif ($id eq 'bond_mode') {
 938                         # always use names
 939                         foreach my $bm (keys %$bond_modes) {
 940                             my $id = $bond_modes->{$bm};
 941                             if ($id eq $value) {
 942                                 $value = $bm;
 943                                 last;
 944                             }
 945                         }
 946                         $d->{$id} = $value;
 947                     } elsif ($id eq 'vxlan-remoteip') {
 948                         push @{$d->{$id}}, $value;
 949                     } else {
 950                         push @{$f->{options}}, $option;
 951                     }
 952                 } else {
 953                     last;
 954                 }
 955             }
 956             $d->{"$_$suffix"} = $f->{$_} foreach (keys %$f);
 957             last SECTION if !defined($line);
 958             redo SECTION;
 959         } elsif ($line =~ /\w/) {
 960             push @$options, [$priority++, $line];
 961         }
 962     }
 963
 964     foreach my $ifname (@$active_ifaces) {
 965         if (my $iface = $ifaces->{$ifname}) {
 966             $iface->{active} = 1;
 967         }
 968     }
 969
 970     if (!$ifaces->{lo}) {
 971         $ifaces->{lo}->{priority} = 1;
 972         $ifaces->{lo}->{method} = 'loopback';
 973         $ifaces->{lo}->{type} = 'loopback';
 974         $ifaces->{lo}->{autostart} = 1;
 975     }
 976
 977     foreach my $iface (keys %$ifaces) {
 978         my $d = $ifaces->{$iface};
 979         if ($iface =~ m/^bond\d+$/) {
 980             if (!$d->{ovs_type}) {
 981                 $d->{type} = 'bond';
 982             } elsif ($d->{ovs_type} eq 'OVSBond') {
 983                 $d->{type} = $d->{ovs_type};
 984                 # translate: ovs_options => bond_mode
 985                 $d->{'bond_mode'} = &$extract_ovs_option($d, 'bond_mode');
 986                 my $lacp = &$extract_ovs_option($d, 'lacp');
 987                 if ($lacp && $lacp eq 'active') {
 988                     if ($d->{'bond_mode'} eq 'balance-slb') {
 989                         $d->{'bond_mode'} = 'lacp-balance-slb';
 990                     }
 991                 }
 992                 # Note: balance-tcp needs lacp
 993                 if ($d->{'bond_mode'} eq 'balance-tcp') {
 994                     $d->{'bond_mode'} = 'lacp-balance-tcp';
 995                 }
 996                 my $tag = &$extract_ovs_option($d, 'tag');
 997                 $d->{ovs_tag} = $tag if defined($tag);
 998             } else {
 999                 $d->{type} = 'unknown';
1000             }
1001         } elsif ($iface =~ m/^vmbr\d+$/) {
1002             if (!$d->{ovs_type}) {
1003                 $d->{type} = 'bridge';
1004
1005                 if (!defined ($d->{bridge_fd})) {
1006                     $d->{bridge_fd} = 0;
1007                 }
1008                 if (!defined ($d->{bridge_stp})) {
1009                     $d->{bridge_stp} = 'off';
1010                 }
1011             } elsif ($d->{ovs_type} eq 'OVSBridge') {
1012                 $d->{type} = $d->{ovs_type};
1013             } else {
1014                 $d->{type} = 'unknown';
1015             }
1016         } elsif ($iface =~ m/^(\S+):\d+$/) {
1017             $d->{type} = 'alias';
1018             if (defined ($ifaces->{$1})) {
1019                 $d->{exists} = $ifaces->{$1}->{exists};
1020             } else {
1021                 $ifaces->{$1}->{exists} = 0;
1022                 $d->{exists} = 0;
1023             }
1024         } elsif ($iface =~ m/^(\S+)\.\d+$/) {
1025             $d->{type} = 'vlan';
1026             if (defined ($ifaces->{$1})) {
1027                 $d->{exists} = $ifaces->{$1}->{exists};
1028             } else {
1029                 $ifaces->{$1}->{exists} = 0;
1030                 $d->{exists} = 0;
1031             }
1032         } elsif ($iface =~ m/^$PVE::Network::PHYSICAL_NIC_RE$/) {
1033             if (!$d->{ovs_type}) {
1034                 $d->{type} = 'eth';
1035             } elsif ($d->{ovs_type} eq 'OVSPort') {
1036                 $d->{type} = $d->{ovs_type};
1037                 my $tag = &$extract_ovs_option($d, 'tag');
1038                 $d->{ovs_tag} = $tag if defined($tag);
1039             } else {
1040                 $d->{type} = 'unknown';
1041             }
1042         } elsif ($iface =~ m/^lo$/) {
1043             $d->{type} = 'loopback';
1044         } else {
1045             if ($d->{'vxlan-id'}) {
1046                 $d->{type} = 'vxlan';
1047             } elsif (!$d->{ovs_type}) {
1048                 $d->{type} = 'unknown';
1049             } elsif ($d->{ovs_type} eq 'OVSIntPort') {
1050                 $d->{type} = $d->{ovs_type};
1051                 my $tag = &$extract_ovs_option($d, 'tag');
1052                 $d->{ovs_tag} = $tag if defined($tag);
1053             }
1054         }
1055
1056         $d->{method} = 'manual' if !$d->{method};
1057         $d->{method6} = 'manual' if !$d->{method6};
1058
1059         $d->{families} ||= ['inet'];
1060     }
1061
1062     # OVS bridges create "allow-$BRIDGE $IFACE" lines which we need to remove
1063     # from the {options} hash for them to be removed correctly.
1064     @$options = grep {defined($_)} map {
1065         my ($pri, $line) = @$_;
1066         if ($line =~ /^allow-(\S+)\s+(.*)$/) {
1067             my $bridge = $1;
1068             my @ports = split(/\s+/, $2);
1069             if (defined(my $br = $ifaces->{$bridge})) {
1070                 # if this port is part of a bridge, remove it
1071                 my %in_ovs_ports = map {$_=>1} split(/\s+/, $br->{ovs_ports});
1072                 @ports = grep { not $in_ovs_ports{$_} } @ports;
1073             }
1074             # create the allow line for the remaining ports, or delete if empty
1075             if (@ports) {
1076                 [$pri, "allow-$bridge " . join(' ', @ports)];
1077             } else {
1078                 undef;
1079             }
1080         } else {
1081             # don't modify other lines
1082             $_;
1083         }
1084     } @$options;
1085
1086     return $config;
1087 }
1088
1089 sub __interface_to_string {
1090     my ($iface, $d, $family, $first_block, $ifupdown2) = @_;
1091
1092     (my $suffix = $family) =~ s/^inet//;
1093
1094     return '' if !($d && $d->{"method$suffix"});
1095
1096     my $raw = '';
1097
1098     $raw .= "iface $iface $family " . $d->{"method$suffix"} . "\n";
1099     $raw .= "\taddress  " . $d->{"address$suffix"} . "\n" if $d->{"address$suffix"};
1100     $raw .= "\tnetmask  " . $d->{"netmask$suffix"} . "\n" if $d->{"netmask$suffix"};
1101     $raw .= "\tgateway  " . $d->{"gateway$suffix"} . "\n" if $d->{"gateway$suffix"};
1102     $raw .= "\tbroadcast  " . $d->{"broadcast$suffix"} . "\n" if $d->{"broadcast$suffix"};
1103
1104     my $done = { type => 1, priority => 1, method => 1, active => 1, exists => 1,
1105                  comments => 1, autostart => 1, options => 1,
1106                  address => 1, netmask => 1, gateway => 1, broadcast => 1,
1107                  method6 => 1, families => 1, options6 => 1,
1108                  address6 => 1, netmask6 => 1, gateway6 => 1, broadcast6 => 1 };
1109
1110     if (!$first_block) {
1111         # not printing out options
1112     } elsif ($d->{type} eq 'bridge') {
1113
1114         $d->{bridge_ports} =~ s/[;,\s]+/ /g;
1115         my $ports = $d->{bridge_ports} || 'none';
1116         $raw .= "\tbridge-ports $ports\n";
1117         $done->{bridge_ports} = 1;
1118
1119         my $v = defined($d->{bridge_stp}) ? $d->{bridge_stp} : 'off';
1120         $raw .= "\tbridge-stp $v\n";
1121         $done->{bridge_stp} = 1;
1122
1123         $v = defined($d->{bridge_fd}) ? $d->{bridge_fd} : 0;
1124         $raw .= "\tbridge-fd $v\n";
1125         $done->{bridge_fd} = 1;
1126
1127         if( defined($d->{bridge_vlan_aware})) {
1128             $raw .= "\tbridge-vlan-aware yes\n";
1129             $v = defined($d->{bridge_vids}) ? $d->{bridge_vids} : "2-4094";
1130             $raw .= "\tbridge-vids $v\n";
1131         }
1132         $done->{bridge_vlan_aware} = 1;
1133         $done->{bridge_vids} = 1;
1134
1135     } elsif ($d->{type} eq 'bond') {
1136
1137         $d->{slaves} =~ s/[;,\s]+/ /g;
1138         my $slaves = $d->{slaves} || 'none';
1139         $raw .= "\tbond-slaves $slaves\n";
1140         $done->{slaves} = 1;
1141
1142         my $v = defined ($d->{'bond_miimon'}) ? $d->{'bond_miimon'} : 100;
1143         $raw .= "\tbond-miimon $v\n";
1144         $done->{'bond_miimon'} = 1;
1145
1146         $v = defined ($d->{'bond_mode'}) ? $d->{'bond_mode'} : 'balance-rr';
1147         $raw .= "\tbond-mode $v\n";
1148         $done->{'bond_mode'} = 1;
1149
1150         if ($d->{'bond_mode'} && $d->{'bond_xmit_hash_policy'} &&
1151             ($d->{'bond_mode'} eq 'balance-xor' || $d->{'bond_mode'} eq '802.3ad')) {
1152             $raw .= "\tbond-xmit-hash-policy $d->{'bond_xmit_hash_policy'}\n";
1153         }
1154         $done->{'bond_xmit_hash_policy'} = 1;
1155     } elsif ($d->{type} eq 'vxlan') {
1156
1157         foreach my $k (qw(vxlan-id vxlan-svcnodeip vxlan-physdev vxlan-local-tunnelip)) {
1158             $raw .= "\t$k $d->{$k}\n" if defined $d->{$k};
1159             $done->{$k} = 1;
1160         }
1161
1162         if ($d->{'vxlan-remoteip'}) {
1163             foreach my $remoteip (@{$d->{'vxlan-remoteip'}}) {
1164                 $raw .= "\tvxlan-remoteip $remoteip\n";
1165             }
1166             $done->{'vxlan-remoteip'} = 1;
1167         }
1168     } elsif ($d->{type} eq 'OVSBridge') {
1169
1170         $raw .= "\tovs_type $d->{type}\n";
1171         $done->{ovs_type} = 1;
1172
1173         $raw .= "\tovs_ports $d->{ovs_ports}\n" if $d->{ovs_ports};
1174         $done->{ovs_ports} = 1;
1175     } elsif ($d->{type} eq 'OVSPort' || $d->{type} eq 'OVSIntPort' ||
1176              $d->{type} eq 'OVSBond') {
1177
1178         $d->{autostart} = 0; # started by the bridge
1179
1180         if (defined($d->{ovs_tag})) {
1181             &$set_ovs_option($d, tag => $d->{ovs_tag});
1182         }
1183         $done->{ovs_tag} = 1;
1184
1185         if ($d->{type} eq 'OVSBond') {
1186
1187             $d->{bond_mode} = 'active-backup' if !$d->{bond_mode};
1188
1189             $ovs_bond_modes->{$d->{bond_mode}} ||
1190                 die "OVS does not support bond mode '$d->{bond_mode}\n";
1191
1192             if ($d->{bond_mode} eq 'lacp-balance-slb') {
1193                 &$set_ovs_option($d, lacp => 'active');
1194                 &$set_ovs_option($d, bond_mode => 'balance-slb');
1195             } elsif ($d->{bond_mode} eq 'lacp-balance-tcp') {
1196                 &$set_ovs_option($d, lacp => 'active');
1197                 &$set_ovs_option($d, bond_mode => 'balance-tcp');
1198             } else {
1199                 &$set_ovs_option($d, lacp => undef);
1200                 &$set_ovs_option($d, bond_mode => $d->{bond_mode});
1201             }
1202             $done->{bond_mode} = 1;
1203
1204             $raw .= "\tovs_bonds $d->{ovs_bonds}\n" if $d->{ovs_bonds};
1205             $done->{ovs_bonds} = 1;
1206         }
1207
1208         $raw .= "\tovs_type $d->{type}\n";
1209         $done->{ovs_type} = 1;
1210
1211         if ($d->{ovs_bridge}) {
1212
1213             if ($ifupdown2) {
1214                 $raw = "auto $iface\n$raw";
1215             } else {
1216                 $raw = "allow-$d->{ovs_bridge} $iface\n$raw";
1217             }
1218
1219             $raw .= "\tovs_bridge $d->{ovs_bridge}\n";
1220             $done->{ovs_bridge} = 1;
1221         }
1222     }
1223
1224     if ($first_block) {
1225         # print other settings
1226         foreach my $k (sort keys %$d) {
1227            next if $done->{$k};
1228            next if !$d->{$k};
1229            $raw .= "\t$k $d->{$k}\n";
1230         }
1231     }
1232
1233     foreach my $option (@{$d->{"options$suffix"}}) {
1234         $raw .= "\t$option\n";
1235     }
1236
1237     # add comments
1238     my $comments = $d->{"comments$suffix"} || '';
1239     foreach my $cl (split(/\n/, $comments)) {
1240         $raw .= "#$cl\n";
1241     }
1242
1243     $raw .= "\n";
1244
1245     return $raw;
1246 }
1247
1248
1249 sub write_etc_network_interfaces {
1250     my ($filename, $fh, $config) = @_;
1251     my $ifupdown2 = -e '/usr/share/ifupdown2';
1252     my $raw = __write_etc_network_interfaces($config, $ifupdown2);
1253     PVE::Tools::safe_print($filename, $fh, encode('UTF-8', $raw));
1254 }
1255 sub __write_etc_network_interfaces {
1256     my ($config, $ifupdown2) = @_;
1257
1258     my $ifaces = $config->{ifaces};
1259     my @options = @{$config->{options}};
1260
1261     my $used_ports = {};
1262
1263     foreach my $iface (keys %$ifaces) {
1264         my $d = $ifaces->{$iface};
1265
1266         my $ports = '';
1267         foreach my $k (qw(bridge_ports ovs_ports slaves ovs_bonds)) {
1268             $ports .= " $d->{$k}" if $d->{$k};
1269         }
1270
1271         foreach my $p (PVE::Tools::split_list($ports)) {
1272             die "port '$p' is already used on interface '$used_ports->{$p}'\n"
1273                 if $used_ports->{$p} && $used_ports->{$p} ne $iface;
1274             $used_ports->{$p} = $iface;
1275         }
1276     }
1277
1278     # delete unused OVS ports
1279     foreach my $iface (keys %$ifaces) {
1280         my $d = $ifaces->{$iface};
1281         if ($d->{type} eq 'OVSPort' || $d->{type} eq 'OVSIntPort' ||
1282             $d->{type} eq 'OVSBond') {
1283             my $brname = $used_ports->{$iface};
1284             if (!$brname || !$ifaces->{$brname}) {
1285                 if ($iface =~ /^$PVE::Network::PHYSICAL_NIC_RE/) {
1286                     $ifaces->{$iface} = { type => 'eth',
1287                                           exists => 1,
1288                                           method => 'manual',
1289                                           families => ['inet'] };
1290                 } else {
1291                     delete $ifaces->{$iface};
1292                 }
1293                 next;
1294             }
1295             my $bd = $ifaces->{$brname};
1296             if ($bd->{type} ne 'OVSBridge') {
1297                 delete $ifaces->{$iface};
1298                 next;
1299             }
1300         }
1301     }
1302
1303     # create OVS bridge ports
1304     foreach my $iface (keys %$ifaces) {
1305         my $d = $ifaces->{$iface};
1306         if ($d->{type} eq 'OVSBridge' && $d->{ovs_ports}) {
1307             foreach my $p (split (/\s+/, $d->{ovs_ports})) {
1308                 my $n = $ifaces->{$p};
1309                 die "OVS bridge '$iface' - unable to find port '$p'\n"
1310                     if !$n;
1311                 $n->{autostart} = 0;
1312                 if ($n->{type} eq 'eth') {
1313                     $n->{type} = 'OVSPort';
1314                     $n->{ovs_bridge} = $iface;
1315                 } elsif ($n->{type} eq 'OVSBond' || $n->{type} eq 'OVSPort' ||
1316                     $n->{type} eq 'OVSIntPort') {
1317                     $n->{ovs_bridge} = $iface;
1318                 } else {
1319                     die "interface '$p' is not defined as OVS port/bond\n";
1320                 }
1321
1322                 &$check_mtu($ifaces, $iface, $p);
1323             }
1324         }
1325     }
1326
1327     # check OVS bond ports
1328     foreach my $iface (keys %$ifaces) {
1329         my $d = $ifaces->{$iface};
1330         if ($d->{type} eq 'OVSBond' && $d->{ovs_bonds}) {
1331             foreach my $p (split (/\s+/, $d->{ovs_bonds})) {
1332                 my $n = $ifaces->{$p};
1333                 die "OVS bond '$iface' - unable to find slave '$p'\n"
1334                     if !$n;
1335                 die "OVS bond '$iface' - wrong interface type on slave '$p' " .
1336                     "('$n->{type}' != 'eth')\n" if $n->{type} ne 'eth';
1337                 &$check_mtu($ifaces, $iface, $p);
1338             }
1339         }
1340     }
1341
1342     # check bond
1343     foreach my $iface (keys %$ifaces) {
1344         my $d = $ifaces->{$iface};
1345         if ($d->{type} eq 'bond' && $d->{slaves}) {
1346             foreach my $p (split (/\s+/, $d->{slaves})) {
1347                 my $n = $ifaces->{$p};
1348
1349                 die "bond '$iface' - unable to find slave '$p'\n"
1350                     if !$n;
1351                 die "bond '$iface' - wrong interface type on slave '$p' " .
1352                     "('$n->{type}' != 'eth')\n" if $n->{type} ne 'eth';
1353                 &$check_mtu($ifaces, $iface, $p);
1354             }
1355         }
1356     }
1357
1358     # check vxlan
1359     my $vxlans = {};
1360     foreach my $iface (keys %$ifaces) {
1361         my $d = $ifaces->{$iface};
1362
1363         if ($d->{type} eq 'vxlan' && $d->{'vxlan-id'}) {
1364             my $vxlanid = $d->{'vxlan-id'};
1365             die "iface $iface - duplicate vxlan-id $vxlanid already used in $vxlans->{$vxlanid}\n" if $vxlans->{$vxlanid};
1366             $vxlans->{$vxlanid} = $iface;
1367         }
1368
1369         my $ips = 0;
1370         ++$ips if defined $d->{'vxlan-svcnodeip'};
1371         ++$ips if defined $d->{'vxlan-remoteip'};
1372         ++$ips if defined $d->{'vxlan-local-tunnelip'};
1373         if ($ips > 1) {
1374             die "iface $iface - vxlan-svcnodeip, vxlan-remoteip and vxlan-localtunnelip are mutually exclusive\n";
1375         }
1376
1377         if (defined($d->{'vxlan-svcnodeip'}) != defined($d->{'vxlan-physdev'})) {
1378             die "iface $iface - vxlan-svcnodeip and vxlan-physdev must be define together\n";
1379         }
1380         #fixme : check if vxlan mtu is lower than 50bytes than physical interface where tunnel is going out
1381     }
1382
1383     # check vlan
1384     foreach my $iface (keys %$ifaces) {
1385         my $d = $ifaces->{$iface};
1386         if ($d->{type} eq 'vlan' && $iface =~ m/^(\S+)\.\d+$/) {
1387             my $p = $1;
1388             my $n = $ifaces->{$p};
1389
1390             die "vlan '$iface' - unable to find parent '$p'\n"
1391                 if !$n;
1392
1393             if ($n->{type} eq 'bridge' && !$n->{bridge_vlan_aware}) {
1394                 die "vlan '$iface' - bridge vlan aware is not enabled on parent '$p'\n";
1395             } elsif ($n->{type} ne 'eth' && $n->{type} ne 'bridge' && $n->{type} ne 'bond') {
1396                 die "vlan '$iface' - wrong interface type on parent '$p' " .
1397                     "('$n->{type}' != 'eth|bond|bridge' )\n";
1398             }
1399             &$check_mtu($ifaces, $p, $iface);
1400         }
1401     }
1402
1403     # check bridgeport option
1404     my $bridgeports = {};
1405     my $bridges = {};
1406     foreach my $iface (keys %$ifaces) {
1407         my $d = $ifaces->{$iface};
1408         if ($d->{type} eq 'bridge') {
1409             foreach my $p (split (/\s+/, $d->{bridge_ports})) {
1410                 $p =~ s/\.\d+$//;
1411                 my $n = $ifaces->{$p};
1412                 die "bridge '$iface' - unable to find bridge port '$p'\n"
1413                     if !$n;
1414                 &$check_mtu($ifaces, $iface, $p);
1415                 $bridgeports->{$p} = $iface;
1416             }
1417             $bridges->{$iface} = $d;
1418         }
1419     }
1420
1421     foreach my $iface (keys %$ifaces) {
1422         my $d = $ifaces->{$iface};
1423
1424         foreach my $k (qw(bridge-learning bridge-arp-nd-suppress bridge-unicast-flood bridge-multicast-flood bridge-access)) {
1425             die "iface $iface - $k: bridge port specific options can be used only on interfaces attached to a bridge\n"
1426                 if $d->{$k} && !$bridgeports->{$iface};
1427         }
1428
1429         if ($d->{'bridge-access'} && !$bridges->{$bridgeports->{$iface}}->{bridge_vlan_aware}) {
1430             die "iface $iface - bridge-access option can be only used if interface is in a vlan aware bridge\n";
1431         }
1432     }
1433
1434     my $raw = <<'NETWORKDOC';
1435 # network interface settings; autogenerated
1436 # Please do NOT modify this file directly, unless you know what
1437 # you're doing.
1438 #
1439 # If you want to manage part of the network configuration manually,
1440 # please utilize the 'source' or 'source-directory' directives to do
1441 # so.
1442 # PVE will preserve these directives, but will NOT its network
1443 # configuration from sourced files, so do not attempt to move any of
1444 # the PVE managed interfaces into external files!
1445
1446 NETWORKDOC
1447
1448     my $printed = {};
1449
1450     my $if_type_hash = {
1451         loopback => 100000,
1452         eth => 200000,
1453         bond => 300000,
1454         bridge => 400000,
1455         vxlan => 500000,
1456    };
1457
1458     my $lookup_type_prio = sub {
1459         my $iface = shift;
1460
1461         my $child = 0;
1462         if ($iface =~ m/^(\S+)(\.|:)\d+$/) {
1463             $iface = $1;
1464             $child = 1;
1465         }
1466
1467         my $pri;
1468         if ($iface eq 'lo') {
1469             $pri = $if_type_hash->{loopback};
1470         } elsif ($iface =~ m/^$PVE::Network::PHYSICAL_NIC_RE$/) {
1471             $pri = $if_type_hash->{eth} + $child;
1472         } elsif ($iface =~ m/^bond\d+$/) {
1473             $pri = $if_type_hash->{bond} + $child;
1474         } elsif ($iface =~ m/^vmbr\d+$/) {
1475             $pri = $if_type_hash->{bridge} + $child;
1476         }
1477
1478         return $pri;
1479     };
1480
1481     foreach my $iface (sort {
1482         my $ref1 = $ifaces->{$a};
1483         my $ref2 = $ifaces->{$b};
1484         my $tp1 = &$lookup_type_prio($a);
1485         my $tp2 = &$lookup_type_prio($b);
1486
1487         # Only recognized types are in relation to each other. If one type
1488         # is unknown then only consider the interfaces' priority attributes.
1489         $tp1 = $tp2 = 0 if !defined($tp1) || !defined($tp2);
1490
1491         my $p1 = $tp1 + ($ref1->{priority} // 50000);
1492         my $p2 = $tp2 + ($ref2->{priority} // 50000);
1493
1494         return $p1 <=> $p2 if $p1 != $p2;
1495
1496         return $a cmp $b;
1497     } keys %$ifaces) {
1498         next if $printed->{$iface};
1499
1500         my $d = $ifaces->{$iface};
1501         my $pri = $d->{priority} // 0;
1502         if (@options && $options[0]->[0] < $pri) {
1503             do {
1504                 $raw .= (shift @options)->[1] . "\n";
1505             } while (@options && $options[0]->[0] < $pri);
1506             $raw .= "\n";
1507         }
1508
1509         $printed->{$iface} = 1;
1510         $raw .= "auto $iface\n" if $d->{autostart};
1511         my $i = 0; # some options should be printed only once
1512         $raw .= __interface_to_string($iface, $d, $_, !$i++, $ifupdown2) foreach @{$d->{families}};
1513     }
1514
1515     $raw .= $_->[1] . "\n" foreach @options;
1516     return $raw;
1517 }
1518
1519 register_file('interfaces', "/etc/network/interfaces",
1520               \&read_etc_network_interfaces,
1521               \&write_etc_network_interfaces);
1522
1523
1524 sub read_iscsi_initiatorname {
1525     my ($filename, $fd) = @_;
1526
1527     while (defined(my $line = <$fd>)) {
1528         if ($line =~ m/^InitiatorName=(\S+)$/) {
1529             return $1;
1530         }
1531     }
1532
1533     return 'undefined';
1534 }
1535
1536 register_file('initiatorname', "/etc/iscsi/initiatorname.iscsi",
1537               \&read_iscsi_initiatorname);
1538
1539 sub read_apt_auth {
1540     my ($filename, $fd) = @_;
1541
1542     local $/;
1543
1544     my $raw = defined($fd) ? <$fd> : '';
1545
1546     $raw =~ s/^\s+//;
1547
1548
1549     my @tokens = split(/\s+/, $raw);
1550
1551     my $data = {};
1552
1553     my $machine;
1554     while (defined(my $tok = shift @tokens)) {
1555
1556         $machine = shift @tokens if $tok eq 'machine';
1557         next if !$machine;
1558         $data->{$machine} = {} if !$data->{$machine};
1559
1560         $data->{$machine}->{login} = shift @tokens if $tok eq 'login';
1561         $data->{$machine}->{password} = shift @tokens if $tok eq 'password';
1562     };
1563
1564     return $data;
1565 }
1566
1567 my $format_apt_auth_data = sub {
1568     my $data = shift;
1569
1570     my $raw = '';
1571
1572     foreach my $machine (sort keys %$data) {
1573         my $d = $data->{$machine};
1574         $raw .= "machine $machine\n";
1575         $raw .= " login $d->{login}\n" if $d->{login};
1576         $raw .= " password $d->{password}\n" if $d->{password};
1577         $raw .= "\n";
1578     }
1579
1580     return $raw;
1581 };
1582
1583 sub write_apt_auth {
1584     my ($filename, $fh, $data) = @_;
1585
1586     my $raw = &$format_apt_auth_data($data);
1587
1588     die "write failed: $!" unless print $fh "$raw\n";
1589
1590     return $data;
1591 }
1592
1593 sub update_apt_auth {
1594     my ($filename, $fh, $data) = @_;
1595
1596     my $orig = read_apt_auth($filename, $fh);
1597
1598     foreach my $machine (keys %$data) {
1599         $orig->{$machine} = $data->{$machine};
1600     }
1601
1602     return &$format_apt_auth_data($orig);
1603 }
1604
1605 register_file('apt-auth', "/etc/apt/auth.conf",
1606               \&read_apt_auth, \&write_apt_auth,
1607               \&update_apt_auth, perm => 0640);
1608
1609 1;