2 #============================================================= -*-perl-*-
4 # BackupPC_dump: Dump a single client.
8 # Usage: BackupPC_dump [-i] [-f] [-d] [-e] [-v] <client>
12 # -i Do an incremental dump, overriding any scheduling (but a full
13 # dump will be done if no dumps have yet succeeded)
15 # -f Do a full dump, overriding any scheduling.
17 # -d Host is a DHCP pool address, and the client argument
18 # just an IP address. We lookup the NetBios name from
21 # -e Just do an dump expiry check for the client. Don't do anything
22 # else. This is used periodically by BackupPC to make sure that
23 # dhcp hosts have correctly expired old backups. Without this,
24 # dhcp hosts that are no longer on the network will not expire
27 # -v verbose. for manual usage: prints failure reasons in more detail.
29 # BackupPC_dump is run periodically by BackupPC to backup $client.
30 # The file $TopDir/pc/$client/backups is read to decide whether a
31 # full or incremental backup needs to be run. If no backup is
32 # scheduled, or a ping to $client fails, then BackupPC_dump quits.
34 # The backup is done using the selected XferMethod (smb, tar, rsync,
35 # backuppcd etc), extracting the dump into $TopDir/pc/$client/new.
36 # The xfer output is put into $TopDir/pc/$client/XferLOG.
38 # If the dump succeeds (based on parsing the output of the XferMethod):
39 # - $TopDir/pc/$client/new is renamed to $TopDir/pc/$client/nnn, where
40 # nnn is the next sequential dump number.
41 # - $TopDir/pc/$client/XferLOG is renamed to $TopDir/pc/$client/XferLOG.nnn.
42 # - $TopDir/pc/$client/backups is updated.
45 # - $TopDir/pc/$client/new is moved to $TopDir/trash for later removal.
46 # - $TopDir/pc/$client/XferLOG is renamed to $TopDir/pc/$client/XferLOG.bad
49 # BackupPC_dump communicates to BackupPC via printing to STDOUT.
52 # Craig Barratt <cbarratt@users.sourceforge.net>
55 # Copyright (C) 2001-2003 Craig Barratt
57 # This program is free software; you can redistribute it and/or modify
58 # it under the terms of the GNU General Public License as published by
59 # the Free Software Foundation; either version 2 of the License, or
60 # (at your option) any later version.
62 # This program is distributed in the hope that it will be useful,
63 # but WITHOUT ANY WARRANTY; without even the implied warranty of
64 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
65 # GNU General Public License for more details.
67 # You should have received a copy of the GNU General Public License
68 # along with this program; if not, write to the Free Software
69 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
71 #========================================================================
73 # Version 3.0.0, released 28 Jan 2007.
75 # See http://backuppc.sourceforge.net.
77 #========================================================================
81 use lib "/usr/local/BackupPC/lib";
83 use BackupPC::FileZIO;
84 use BackupPC::Storage;
85 use BackupPC::Xfer::Smb;
86 use BackupPC::Xfer::Tar;
87 use BackupPC::Xfer::Rsync;
88 use BackupPC::Xfer::BackupPCd;
95 ###########################################################################
97 ###########################################################################
99 die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) );
100 my $TopDir = $bpc->TopDir();
101 my $BinDir = $bpc->BinDir();
102 my %Conf = $bpc->Conf();
111 if ( !getopts("defiv", \%opts) || @ARGV != 1 ) {
112 print("usage: $0 [-d] [-e] [-f] [-i] [-v] <client>\n");
115 if ( $ARGV[0] !~ /^([\w\.\s-]+)$/ ) {
116 print("$0: bad client name '$ARGV[0]'\n");
119 my $client = $1; # BackupPC's client name (might not be real host name)
120 my $hostIP; # this is the IP address
121 my $host; # this is the real host name
123 my($clientURI, $user);
125 $bpc->verbose(1) if ( $opts{v} );
129 # The client name $client is simply a DHCP address. We need to check
130 # if there is any machine at this address, and if so, get the actual
131 # host name via NetBios using nmblookup.
134 if ( $bpc->CheckHostAlive($hostIP) < 0 ) {
135 print(STDERR "Exiting because CheckHostAlive($hostIP) failed\n")
139 if ( $Conf{NmbLookupCmd} eq "" ) {
140 print(STDERR "Exiting because \$Conf{NmbLookupCmd} is empty\n")
144 ($client, $user) = $bpc->NetBiosInfoGet($hostIP);
145 if ( $client !~ /^([\w\.\s-]+)$/ ) {
146 print(STDERR "Exiting because NetBiosInfoGet($hostIP) returned"
147 . " '$client', an invalid host name\n") if ( $opts{v} );
150 $Hosts = $bpc->HostInfoRead($client);
153 $Hosts = $bpc->HostInfoRead($client);
155 if ( !defined($Hosts->{$client}) ) {
156 print(STDERR "Exiting because host $client does not exist in the"
157 . " hosts file\n") if ( $opts{v} );
161 my $Dir = "$TopDir/pc/$client";
166 # Re-read config file, so we can include the PC-specific config
168 $clientURI = $bpc->uriEsc($client);
169 if ( defined(my $error = $bpc->ConfigRead($client)) ) {
170 print("dump failed: Can't read PC's config file: $error\n");
173 %Conf = $bpc->Conf();
176 # Catch various signals
178 $SIG{INT} = \&catch_signal;
179 $SIG{ALRM} = \&catch_signal;
180 $SIG{TERM} = \&catch_signal;
181 $SIG{PIPE} = \&catch_signal;
182 $SIG{STOP} = \&catch_signal;
183 $SIG{TSTP} = \&catch_signal;
184 $SIG{TTIN} = \&catch_signal;
188 # Make sure we eventually timeout if there is no activity from
189 # the data transport program.
191 alarm($Conf{ClientTimeout});
193 mkpath($Dir, 0, 0777) if ( !-d $Dir );
194 if ( !-f "$Dir/LOCK" ) {
195 open(LOCK, ">", "$Dir/LOCK") && close(LOCK);
198 my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
199 my $logPath = sprintf("$Dir/LOG.%02d%04d", $mon + 1, $year + 1900);
201 if ( !-f $logPath ) {
203 # Compress and prune old log files
205 my $lastLog = $Conf{MaxOldPerPCLogFiles} - 1;
206 foreach my $file ( $bpc->sortedPCLogFiles($client) ) {
207 if ( $lastLog <= 0 ) {
212 next if ( $file =~ /\.z$/ || !$Conf{CompressLevel} );
213 BackupPC::FileZIO->compressCopy($file,
216 $Conf{CompressLevel}, 1);
220 open(LOG, ">>", $logPath);
221 select(LOG); $| = 1; select(STDOUT);
224 # For the -e option we just expire backups and quit
227 BackupExpire($client);
232 # For archive hosts we don't bother any further
234 if ($Conf{XferMethod} eq "archive" ) {
235 print(STDERR "Exiting because the XferMethod is set to archive\n")
242 # In the non-DHCP case, make sure the host can be looked up
243 # via NS, or otherwise find the IP address via NetBios.
245 if ( $Conf{ClientNameAlias} ne "" ) {
246 $host = $Conf{ClientNameAlias};
250 if ( !defined(gethostbyname($host)) ) {
252 # Ok, NS doesn't know about it. Maybe it is a NetBios name
255 print(STDERR "Name server doesn't know about $host; trying NetBios\n")
257 if ( !defined($hostIP = $bpc->NetBiosHostIPFind($host)) ) {
258 print(LOG $bpc->timeStamp, "Can't find host $host via netbios\n");
259 print("host not found\n");
267 ###########################################################################
268 # Figure out what to do and do it
269 ###########################################################################
272 # See if we should skip this host during a certain range
275 my $err = $bpc->ServerConnect($Conf{ServerHost}, $Conf{ServerPort});
277 print("Can't connect to server ($err)\n");
278 print(LOG $bpc->timeStamp, "Can't connect to server ($err)\n");
281 my $reply = $bpc->ServerMesg("status host($clientURI)");
282 $reply = $1 if ( $reply =~ /(.*)/s );
285 $bpc->ServerDisconnect();
288 # For DHCP tell BackupPC which host this is
291 if ( $StatusHost{activeJob} ) {
292 # oops, something is already running for this host
293 print(STDERR "Exiting because backup is already running for $client\n")
297 print("DHCP $hostIP $clientURI\n");
300 my($needLink, @Backups, $type);
301 my($incrBaseTime, $incrBaseBkupNum, $incrBaseLevel, $incrLevel);
302 my $lastFullTime = 0;
303 my $lastIncrTime = 0;
310 # Maintain backward compatibility with $Conf{FullPeriod} == -1 or -2
311 # meaning disable backups
313 $Conf{BackupsDisable} = -$Conf{FullPeriod}
314 if ( !$Conf{BackupsDisable} && $Conf{FullPeriod} < 0 );
316 if ( $Conf{BackupsDisable} == 1 && !$opts{f} && !$opts{i}
317 || $Conf{BackupsDisable} == 2 ) {
318 print(STDERR "Exiting because backups are disabled with"
319 . " \$Conf{BackupsDisable} = $Conf{BackupsDisable}\n") if ( $opts{v} );
321 # Tell BackupPC to ignore old failed backups on hosts that
322 # have backups disabled.
324 print("backups disabled\n")
325 if ( defined($StatusHost{errorTime})
326 && $StatusHost{reason} ne "Reason_backup_done"
327 && time - $StatusHost{errorTime} > 4 * 24 * 3600 );
328 NothingToDo($needLink);
331 if ( !$opts{i} && !$opts{f} && $Conf{BlackoutGoodCnt} >= 0
332 && $StatusHost{aliveCnt} >= $Conf{BlackoutGoodCnt} ) {
333 my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
334 my($currHours) = $hour + $min / 60 + $sec / 3600;
337 foreach my $p ( @{$Conf{BlackoutPeriods}} ) {
339 # Allow blackout to span midnight (specified by hourBegin
340 # being greater than hourEnd)
342 next if ( ref($p->{weekDays}) ne "ARRAY"
343 || !defined($p->{hourBegin})
344 || !defined($p->{hourEnd})
346 if ( $p->{hourBegin} > $p->{hourEnd} ) {
347 $blackout = $p->{hourBegin} <= $currHours
348 || $currHours <= $p->{hourEnd};
349 if ( $currHours <= $p->{hourEnd} ) {
351 # This is after midnight, so decrement the weekday for the
352 # weekday check (eg: Monday 11pm-1am means Monday 2300 to
353 # Tuesday 0100, not Monday 2300-2400 plus Monday 0000-0100).
356 $wday += 7 if ( $wday < 0 );
359 $blackout = $p->{hourBegin} <= $currHours
360 && $currHours <= $p->{hourEnd};
362 if ( $blackout && grep($_ == $wday, @{$p->{weekDays}}) ) {
363 # print(LOG $bpc->timeStamp, "skipping because of blackout"
364 # . " (alive $StatusHost{aliveCnt} times)\n");
365 print(STDERR "Skipping $client because of blackout\n")
367 NothingToDo($needLink);
372 if ( !$opts{i} && !$opts{f} && $StatusHost{backoffTime} > time ) {
373 printf(LOG "%sskipping because of user requested delay (%.1f hours left)\n",
374 $bpc->timeStamp, ($StatusHost{backoffTime} - time) / 3600);
375 NothingToDo($needLink);
379 # Now see if there are any old backups we should delete
381 BackupExpire($client);
383 my(@lastIdxByLevel, $incrCntSinceFull);
386 # Read Backup information, and find times of the most recent full and
387 # incremental backups. Also figure out which backup we will use
388 # as a starting point for an incremental.
390 @Backups = $bpc->BackupInfoRead($client);
391 ## @Backups = sort( { $a->{startTime} <=> $b->{startTime} }, @Backups);
392 for ( my $i = 0 ; $i < @Backups ; $i++ ) {
393 $needLink = 1 if ( $Backups[$i]{nFilesNew} eq ""
394 || -f "$Dir/NewFileList.$Backups[$i]{num}" );
395 if ( $Backups[$i]{type} eq "full" ) {
396 $incrCntSinceFull = 0;
397 $lastBkupNum = $Backups[$i]{num};
398 $lastIdxByLevel[0] = $i;
399 if ( $lastFullTime < $Backups[$i]{startTime} ) {
400 $lastFullTime = $Backups[$i]{startTime};
402 } elsif ( $Backups[$i]{type} eq "incr" ) {
404 $lastBkupNum = $Backups[$i]{num};
405 $lastIdxByLevel[$Backups[$i]{level}] = $i;
406 $lastIncrTime = $Backups[$i]{startTime}
407 if ( $lastIncrTime < $Backups[$i]{startTime} );
408 } elsif ( $Backups[$i]{type} eq "partial" ) {
410 $lastPartial = $Backups[$i]{startTime};
411 $partialNum = $Backups[$i]{num};
416 # Decide whether we do nothing, or a full or incremental backup.
420 || (!$opts{i} && (time - $lastFullTime > $Conf{FullPeriod} * 24*3600
421 && time - $lastIncrTime > $Conf{IncrPeriod} * 24*3600)) ) {
424 $incrBaseBkupNum = $lastBkupNum;
425 } elsif ( $opts{i} || (time - $lastIncrTime > $Conf{IncrPeriod} * 24*3600
426 && time - $lastFullTime > $Conf{IncrPeriod} * 24*3600) ) {
429 # For an incremental backup, figure out which level we should
430 # do and the index of the reference backup, which is the most
431 # recent backup at any lower level.
433 @{$Conf{IncrLevels}} = [$Conf{IncrLevels}]
434 unless ref($Conf{IncrLevels}) eq "ARRAY";
435 @{$Conf{IncrLevels}} = [1] if ( !@{$Conf{IncrLevels}} );
436 $incrCntSinceFull = $incrCntSinceFull % @{$Conf{IncrLevels}};
437 $incrLevel = $Conf{IncrLevels}[$incrCntSinceFull];
438 for ( my $i = 0 ; $i < $incrLevel ; $i++ ) {
439 my $idx = $lastIdxByLevel[$i];
440 next if ( !defined($idx) );
441 if ( !defined($incrBaseTime)
442 || $Backups[$idx]{startTime} > $incrBaseTime ) {
443 $incrBaseBkupNum = $Backups[$idx]{num};
444 $incrBaseLevel = $Backups[$idx]{level};
445 $incrBaseTime = $Backups[$idx]{startTime};
449 # Can't find any earlier lower-level backup! Shouldn't
450 # happen - just do full instead
452 if ( !defined($incrBaseBkupNum) || $incrLevel < 1 ) {
454 $incrBaseBkupNum = $lastBkupNum;
457 NothingToDo($needLink);
461 # Check if $host is alive
463 my $delay = $bpc->CheckHostAlive($hostIP);
465 print(LOG $bpc->timeStamp, "no ping response\n");
466 print("no ping response\n");
467 print("link $clientURI\n") if ( $needLink );
469 } elsif ( $delay > $Conf{PingMaxMsec} ) {
470 printf(LOG "%sping too slow: %.4gmsec\n", $bpc->timeStamp, $delay);
471 printf("ping too slow: %.4gmsec (threshold is %gmsec)\n",
472 $delay, $Conf{PingMaxMsec});
473 print("link $clientURI\n") if ( $needLink );
478 # Make sure it is really the machine we expect (only for fixed addresses,
479 # since we got the DHCP address above).
481 if ( !$opts{d} && (my $errMsg = CorrectHostCheck($hostIP, $host)) ) {
482 print(LOG $bpc->timeStamp, "dump failed: $errMsg\n");
483 print("dump failed: $errMsg\n");
485 } elsif ( $opts{d} ) {
486 print(LOG $bpc->timeStamp, "$host is dhcp $hostIP, user is $user\n");
490 # Get a clean directory $Dir/new
492 $bpc->RmTreeDefer("$TopDir/trash", "$Dir/new") if ( -d "$Dir/new" );
495 # Setup file extension for compression and open XferLOG output file
497 if ( $Conf{CompressLevel} && !BackupPC::FileZIO->compOk ) {
498 print(LOG $bpc->timeStamp, "dump failed: can't find Compress::Zlib\n");
499 print("dump failed: can't find Compress::Zlib\n");
502 my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : "";
503 my $XferLOG = BackupPC::FileZIO->open("$Dir/XferLOG$fileExt", 1,
504 $Conf{CompressLevel});
505 if ( !defined($XferLOG) ) {
506 print(LOG $bpc->timeStamp, "dump failed: unable to open/create"
507 . " $Dir/XferLOG$fileExt\n");
508 print("dump failed: unable to open/create $Dir/XferLOG$fileExt\n");
513 # Ignore the partial dump in the case of an incremental
514 # or when the partial is too old. A partial is a partial full.
516 if ( $type ne "full" || time - $lastPartial > $Conf{PartialAgeMax} * 24*3600 ) {
522 # If this is a partial, copy the old XferLOG file
525 my($compress, $fileName);
526 if ( -f "$Dir/XferLOG.$partialNum.z" ) {
527 $fileName = "$Dir/XferLOG.$partialNum.z";
529 } elsif ( -f "$Dir/XferLOG.$partialNum" ) {
530 $fileName = "$Dir/XferLOG.$partialNum";
533 if ( my $oldLOG = BackupPC::FileZIO->open($fileName, 0, $compress) ) {
535 while ( $oldLOG->read(\$data, 65536) > 0 ) {
536 $XferLOG->write(\$data);
542 $XferLOG->writeTeeStderr(1) if ( $opts{v} );
543 unlink("$Dir/NewFileList") if ( -f "$Dir/NewFileList" );
545 my $startTime = time();
549 my $sizeExistComp = 0;
552 my($logMsg, %stat, $xfer, $ShareNames, $noFilesErr);
555 if ( $Conf{XferMethod} eq "tar" ) {
556 $ShareNames = $Conf{TarShareName};
557 } elsif ( $Conf{XferMethod} eq "rsync" || $Conf{XferMethod} eq "rsyncd" ) {
558 $ShareNames = $Conf{RsyncShareName};
559 } elsif ( $Conf{XferMethod} eq "backuppcd" ) {
560 $ShareNames = $Conf{BackupPCdShareName};
562 $ShareNames = $Conf{SmbShareName};
565 $ShareNames = [ $ShareNames ] unless ref($ShareNames) eq "ARRAY";
568 # Run an optional pre-dump command
570 UserCommandRun("DumpPreUserCmd");
571 if ( $? && $Conf{UserCmdCheckStatus} ) {
572 print(LOG $bpc->timeStamp,
573 "DumpPreUserCmd returned error status $?... exiting\n");
574 print("dump failed: DumpPreUserCmd returned error status $?\n");
580 # Now backup each of the shares
582 for my $shareName ( @$ShareNames ) {
586 # Convert $shareName to utf8 octets
588 $shareName = encode("utf8", $shareName);
589 $stat{xferOK} = $stat{hostAbort} = undef;
590 $stat{hostError} = $stat{lastOutputLine} = undef;
591 if ( -d "$Dir/new/$shareName" ) {
592 print(LOG $bpc->timeStamp,
593 "unexpected repeated share name $shareName skipped\n");
597 UserCommandRun("DumpPreShareCmd", $shareName);
598 if ( $? && $Conf{UserCmdCheckStatus} ) {
599 print(LOG $bpc->timeStamp,
600 "DumpPreShareCmd returned error status $?... exiting\n");
601 print("dump failed: DumpPreShareCmd returned error status $?\n");
602 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
606 if ( $Conf{XferMethod} eq "tar" ) {
608 # Use tar (eg: tar/ssh) as the transport program.
610 $xfer = BackupPC::Xfer::Tar->new($bpc);
611 } elsif ( $Conf{XferMethod} eq "rsync" || $Conf{XferMethod} eq "rsyncd" ) {
613 # Use rsync as the transport program.
615 if ( !defined($xfer = BackupPC::Xfer::Rsync->new($bpc)) ) {
616 my $errStr = BackupPC::Xfer::Rsync::errStr;
617 print(LOG $bpc->timeStamp, "dump failed: $errStr\n");
618 print("dump failed: $errStr\n");
619 UserCommandRun("DumpPostShareCmd", $shareName) if ( $NeedPostCmd );
620 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
623 } elsif ( $Conf{XferMethod} eq "backuppcd" ) {
625 # Use backuppcd as the transport program.
627 if ( !defined($xfer = BackupPC::Xfer::BackupPCd->new($bpc)) ) {
628 my $errStr = BackupPC::Xfer::BackupPCd::errStr;
629 print(LOG $bpc->timeStamp, "dump failed: $errStr\n");
630 print("dump failed: $errStr\n");
631 UserCommandRun("DumpPostShareCmd", $shareName) if ( $NeedPostCmd );
632 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
637 # Default is to use smbclient (smb) as the transport program.
639 $xfer = BackupPC::Xfer::Smb->new($bpc);
642 my $useTar = $xfer->useTar;
646 # This xfer method outputs a tar format file, so we start a
647 # BackupPC_tarExtract to extract the data.
649 # Create a socketpair to connect the Xfer method to BackupPC_tarExtract
650 # WH is the write handle for writing, provided to the transport
651 # program, and RH is the other end of the socket for reading,
652 # provided to BackupPC_tarExtract.
654 if ( socketpair(RH, WH, AF_UNIX, SOCK_STREAM, PF_UNSPEC) ) {
655 shutdown(RH, 1); # no writing to this socket
656 shutdown(WH, 0); # no reading from this socket
657 setsockopt(RH, SOL_SOCKET, SO_RCVBUF, 8 * 65536);
658 setsockopt(WH, SOL_SOCKET, SO_SNDBUF, 8 * 65536);
661 # Default to pipe() if socketpair() doesn't work.
667 # fork a child for BackupPC_tarExtract. TAR is a file handle
668 # on which we (the parent) read the stdout & stderr from
669 # BackupPC_tarExtract.
671 if ( !defined($tarPid = open(TAR, "-|")) ) {
672 print(LOG $bpc->timeStamp, "can't fork to run tar\n");
673 print("can't fork to run tar\n");
681 # This is the tar child. Close the write end of the pipe,
682 # clone STDERR to STDOUT, clone STDIN from RH, and then
683 # exec BackupPC_tarExtract.
688 open(STDERR, ">&STDOUT");
692 exec("$BinDir/BackupPC_tarExtract", $client, $shareName,
693 $Conf{CompressLevel});
694 print(LOG $bpc->timeStamp,
695 "can't exec $BinDir/BackupPC_tarExtract\n");
698 } elsif ( !defined($newFilesFH) ) {
700 # We need to create the NewFileList output file
703 open(NEW_FILES, ">", "$TopDir/pc/$client/NewFileList")
704 || die("can't open $TopDir/pc/$client/NewFileList");
705 $newFilesFH = *NEW_FILES;
710 # Run the transport program
716 shareName => $shareName,
720 newFilesFH => $newFilesFH,
723 incrBaseTime => $incrBaseTime,
724 incrBaseBkupNum => $incrBaseBkupNum,
725 backups => \@Backups,
726 compress => $Conf{CompressLevel},
727 XferMethod => $Conf{XferMethod},
728 logLevel => $Conf{XferLogLevel},
729 pidHandler => \&pidHandler,
730 partialNum => $partialNum,
733 if ( !defined($logMsg = $xfer->start()) ) {
734 print(LOG $bpc->timeStamp, "xfer start failed: ", $xfer->errStr, "\n");
735 print("dump failed: ", $xfer->errStr, "\n");
736 print("link $clientURI\n") if ( $needLink );
738 # kill off the tar process, first nicely then forcefully
741 kill($bpc->sigName2num("INT"), $tarPid);
743 kill($bpc->sigName2num("KILL"), $tarPid);
746 kill($bpc->sigName2num("INT"), @xferPid);
748 kill($bpc->sigName2num("KILL"), @xferPid);
750 UserCommandRun("DumpPostShareCmd", $shareName) if ( $NeedPostCmd );
751 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
755 @xferPid = $xfer->xferPid;
759 # The parent must close both handles on the pipe since the children
760 # are using these handles now.
765 print(LOG $bpc->timeStamp, $logMsg, "\n");
766 $XferLOG->write(\"$logMsg\n");
767 print("started $type dump, share=$shareName\n");
769 pidHandler(@xferPid);
773 # Parse the output of the transfer program and BackupPC_tarExtract
774 # while they run. Since we might be reading from two or more children
777 my($FDread, $tarOut, $mesg);
778 vec($FDread, fileno(TAR), 1) = 1 if ( $useTar );
779 $xfer->setSelectMask(\$FDread);
783 last if ( $FDread =~ /^\0*$/ );
784 select(my $rout = $FDread, undef, $ein, undef);
786 if ( vec($rout, fileno(TAR), 1) ) {
787 if ( sysread(TAR, $mesg, 8192) <= 0 ) {
788 vec($FDread, fileno(TAR), 1) = 0;
794 while ( $tarOut =~ /(.*?)[\n\r]+(.*)/s ) {
798 $XferLOG->write(\"$_\n");
800 $XferLOG->write(\"tarExtract: $_\n");
802 if ( /^BackupPC_tarExtact aborting \((.*)\)/ ) {
803 $stat{hostError} = $1;
805 if ( /^Done: (\d+) errors, (\d+) filesExist, (\d+) sizeExist, (\d+) sizeExistComp, (\d+) filesTotal, (\d+) sizeTotal/ ) {
809 $sizeExistComp += $4;
815 last if ( !$xfer->readOutput(\$FDread, $rout) );
816 while ( my $str = $xfer->logMsgGet ) {
817 print(LOG $bpc->timeStamp, "xfer: $str\n");
819 if ( $xfer->getStats->{fileCnt} == 1 ) {
821 # Make sure it is still the machine we expect. We do this while
822 # the transfer is running to avoid a potential race condition if
823 # the ip address was reassigned by dhcp just before we started
826 if ( my $errMsg = CorrectHostCheck($hostIP, $host) ) {
827 $stat{hostError} = $errMsg if ( $stat{hostError} eq "" );
834 # otherwise the xfer module does everything for us
836 my @results = $xfer->run();
837 $tarErrs += $results[0];
838 $nFilesExist += $results[1];
839 $sizeExist += $results[2];
840 $sizeExistComp += $results[3];
841 $nFilesTotal += $results[4];
842 $sizeTotal += $results[5];
846 # Merge the xfer status (need to accumulate counts)
848 my $newStat = $xfer->getStats;
849 if ( $newStat->{fileCnt} == 0 ) {
850 $noFilesErr ||= "No files dumped for share $shareName";
852 foreach my $k ( (keys(%stat), keys(%$newStat)) ) {
853 next if ( !defined($newStat->{$k}) );
854 if ( $k =~ /Cnt$/ ) {
855 $stat{$k} += $newStat->{$k};
856 delete($newStat->{$k});
859 if ( !defined($stat{$k}) ) {
860 $stat{$k} = $newStat->{$k};
861 delete($newStat->{$k});
866 if ( $NeedPostCmd ) {
867 UserCommandRun("DumpPostShareCmd", $shareName);
868 if ( $? && $Conf{UserCmdCheckStatus} ) {
869 print(LOG $bpc->timeStamp,
870 "DumpPostShareCmd returned error status $?... exiting\n");
871 $stat{hostError} = "DumpPostShareCmd returned error status $?";
875 $stat{xferOK} = 0 if ( $stat{hostError} || $stat{hostAbort} );
876 if ( !$stat{xferOK} ) {
878 # kill off the transfer program, first nicely then forcefully
881 kill($bpc->sigName2num("INT"), @xferPid);
883 kill($bpc->sigName2num("KILL"), @xferPid);
886 # kill off the tar process, first nicely then forcefully
889 kill($bpc->sigName2num("INT"), $tarPid);
891 kill($bpc->sigName2num("KILL"), $tarPid);
894 # don't do any more shares on this host
901 # If this is a full, and any share had zero files then consider the dump bad
903 if ( $type eq "full" && $stat{hostError} eq ""
904 && length($noFilesErr) && $Conf{BackupZeroFilesIsFatal} ) {
905 $stat{hostError} = $noFilesErr;
909 $stat{xferOK} = 0 if ( $Abort );
912 # Do one last check to make sure it is still the machine we expect.
914 if ( $stat{xferOK} && (my $errMsg = CorrectHostCheck($hostIP, $host)) ) {
915 $stat{hostError} = $errMsg;
919 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
920 if ( $? && $Conf{UserCmdCheckStatus} ) {
921 print(LOG $bpc->timeStamp,
922 "DumpPostUserCmd returned error status $?... exiting\n");
923 $stat{hostError} = "DumpPostUserCmd returned error status $?";
926 close($newFilesFH) if ( defined($newFilesFH) );
928 my $endTime = time();
931 # If the dump failed, clean up
933 if ( !$stat{xferOK} ) {
934 $stat{hostError} = $stat{lastOutputLine} if ( $stat{hostError} eq "" );
935 if ( $stat{hostError} ) {
936 print(LOG $bpc->timeStamp,
937 "Got fatal error during xfer ($stat{hostError})\n");
938 $XferLOG->write(\"Got fatal error during xfer ($stat{hostError})\n");
942 # wait a short while and see if the system is still alive
945 if ( $bpc->CheckHostAlive($hostIP) < 0 ) {
946 $stat{hostAbort} = 1;
948 if ( $stat{hostAbort} ) {
949 $stat{hostError} = "lost network connection during backup";
951 print(LOG $bpc->timeStamp, "Backup aborted ($stat{hostError})\n");
952 $XferLOG->write(\"Backup aborted ($stat{hostError})\n");
954 $XferLOG->write(\"Backup aborted by user signal\n");
958 # Close the log file and call BackupFailCleanup, which exits.
963 my $newNum = BackupSave();
965 my $otherCount = $stat{xferErrCnt} - $stat{xferBadFileCnt}
966 - $stat{xferBadShareCnt};
967 print(LOG $bpc->timeStamp,
968 "$type backup $newNum complete, $stat{fileCnt} files,"
969 . " $stat{byteCnt} bytes,"
970 . " $stat{xferErrCnt} xferErrs ($stat{xferBadFileCnt} bad files,"
971 . " $stat{xferBadShareCnt} bad shares, $otherCount other)\n");
973 BackupExpire($client);
975 print("$type backup complete\n");
977 ###########################################################################
979 ###########################################################################
985 print("nothing to do\n");
986 print("link $clientURI\n") if ( $needLink );
995 # The first time we receive a signal we try to gracefully
996 # abort the backup. This allows us to keep a partial dump
997 # with the in-progress file deleted and attribute caches
998 # flushed to disk etc.
1000 if ( !length($SigName) ) {
1002 if ( $sigName eq "INT" ) {
1003 $reason = "aborted by user (signal=$sigName)";
1005 $reason = "aborted by signal=$sigName";
1009 # Parent logs a message
1011 print(LOG $bpc->timeStamp,
1012 "Aborting backup up after signal $sigName\n");
1015 # Tell xfer to abort, but only if we actually started one
1017 $xfer->abort($reason) if ( defined($xfer) );
1020 # Send ALRMs to BackupPC_tarExtract if we are using it
1022 if ( $tarPid > 0 ) {
1023 kill($bpc->sigName2num("ARLM"), $tarPid);
1027 # Schedule a 20 second timer in case the clean
1028 # abort doesn't complete
1033 # Children ignore anything other than ALRM and INT
1035 if ( $sigName ne "ALRM" && $sigName ne "INT" ) {
1040 # The child also tells xfer to abort
1042 $xfer->abort($reason);
1045 # Schedule a 15 second timer in case the clean
1046 # abort doesn't complete
1050 $SigName = $sigName;
1056 # This is a second signal: time to clean up.
1058 if ( $Pid != $$ && ($sigName eq "ALRM" || $sigName eq "INT") ) {
1060 # Children quit quietly on ALRM or INT
1066 # Ignore other signals in children
1068 return if ( $Pid != $$ );
1070 $SIG{$sigName} = 'IGNORE';
1071 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
1072 $XferLOG->write(\"exiting after signal $sigName\n");
1074 kill($bpc->sigName2num("INT"), @xferPid);
1076 kill($bpc->sigName2num("KILL"), @xferPid);
1078 if ( $tarPid > 0 ) {
1079 kill($bpc->sigName2num("INT"), $tarPid);
1081 kill($bpc->sigName2num("KILL"), $tarPid);
1083 if ( $sigName eq "INT" ) {
1084 $stat{hostError} = "aborted by user (signal=$sigName)";
1086 $stat{hostError} = "received signal=$sigName";
1088 BackupFailCleanup();
1091 sub CheckForNewFiles
1093 if ( -f _ && $File::Find::name !~ /\/fattrib$/ ) {
1097 # No need to check entire tree
1099 $File::Find::prune = 1 if ( $nFilesTotal );
1103 sub BackupFailCleanup
1105 my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : "";
1106 my $keepPartial = 0;
1109 # We keep this backup if it is a full and we actually backed
1112 if ( $type eq "full" ) {
1113 if ( $nFilesTotal == 0 && $xfer->getStats->{fileCnt} == 0 ) {
1115 # Xfer didn't report any files, but check in the new
1116 # directory just in case.
1118 find(\&CheckForNewFiles, "$Dir/new");
1119 $keepPartial = 1 if ( $nFilesTotal );
1122 # Xfer reported some files
1129 # Don't keep partials if they are disabled
1131 $keepPartial = 0 if ( $Conf{PartialAgeMax} < 0 );
1133 if ( !$keepPartial ) {
1135 # No point in saving this dump; get rid of eveything.
1138 unlink("$Dir/timeStamp.level0") if ( -f "$Dir/timeStamp.level0" );
1139 unlink("$Dir/SmbLOG.bad") if ( -f "$Dir/SmbLOG.bad" );
1140 unlink("$Dir/SmbLOG.bad$fileExt") if ( -f "$Dir/SmbLOG.bad$fileExt" );
1141 unlink("$Dir/XferLOG.bad") if ( -f "$Dir/XferLOG.bad" );
1142 unlink("$Dir/XferLOG.bad$fileExt") if ( -f "$Dir/XferLOG.bad$fileExt" );
1143 unlink("$Dir/NewFileList") if ( -f "$Dir/NewFileList" );
1144 rename("$Dir/XferLOG$fileExt", "$Dir/XferLOG.bad$fileExt");
1145 $bpc->RmTreeDefer("$TopDir/trash", "$Dir/new") if ( -d "$Dir/new" );
1146 print("dump failed: $stat{hostError}\n");
1148 print("link $clientURI\n") if ( $needLink );
1152 # Ok, now we should save this as a partial dump
1155 my $newNum = BackupSave();
1156 print("dump failed: $stat{hostError}\n");
1157 print("link $clientURI\n") if ( $needLink );
1158 print(LOG $bpc->timeStamp, "Saved partial dump $newNum\n");
1163 # Decide which old backups should be expired by moving them
1169 my($Dir) = "$TopDir/pc/$client";
1170 my(@Backups) = $bpc->BackupInfoRead($client);
1171 my($cntFull, $cntIncr, $firstFull, $firstIncr, $oldestIncr,
1172 $oldestFull, $changes);
1174 if ( $Conf{FullKeepCnt} <= 0 ) {
1175 print(LOG $bpc->timeStamp,
1176 "Invalid value for \$Conf{FullKeepCnt}=$Conf{FullKeepCnt}\n");
1178 "Invalid value for \$Conf{FullKeepCnt}=$Conf{FullKeepCnt}\n")
1183 $cntFull = $cntIncr = 0;
1184 $oldestIncr = $oldestFull = 0;
1185 for ( my $i = 0 ; $i < @Backups ; $i++ ) {
1186 if ( $Backups[$i]{type} eq "full" ) {
1187 $firstFull = $i if ( $cntFull == 0 );
1189 } elsif ( $Backups[$i]{type} eq "incr" ) {
1190 $firstIncr = $i if ( $cntIncr == 0 );
1194 $oldestIncr = (time - $Backups[$firstIncr]{startTime}) / (24 * 3600)
1195 if ( $cntIncr > 0 );
1196 $oldestFull = (time - $Backups[$firstFull]{startTime}) / (24 * 3600)
1197 if ( $cntFull > 0 );
1200 # With multi-level incrementals, several of the following
1201 # incrementals might depend upon this one, so we have to
1202 # delete all of the them. Figure out if that is possible
1203 # by counting the number of consecutive incrementals that
1204 # are unfilled and have a level higher than this one.
1207 my $earliestIncr = $oldestIncr;
1209 for ( my $i = $firstIncr + 1 ; $i < @Backups ; $i++ ) {
1210 last if ( $Backups[$i]{level} <= $Backups[$firstIncr]{level}
1211 || !$Backups[$i]{noFill} );
1213 $earliestIncr = (time - $Backups[$i]{startTime}) / (24 * 3600);
1216 if ( $cntIncr >= $Conf{IncrKeepCnt} + $cntIncrDel
1217 || ($cntIncr >= $Conf{IncrKeepCntMin} + $cntIncrDel
1218 && $earliestIncr > $Conf{IncrAgeMax}) ) {
1220 # Only delete an incr backup if the Conf settings are satisfied
1221 # for all $cntIncrDel incrementals. Since BackupRemove() does
1222 # a splice() we need to do the deletes in the reverse order.
1224 for ( my $i = $firstIncr + $cntIncrDel - 1 ;
1225 $i >= $firstIncr ; $i-- ) {
1226 print(LOG $bpc->timeStamp,
1227 "removing incr backup $Backups[$i]{num}\n");
1228 BackupRemove($client, \@Backups, $i);
1235 # Delete any old full backups, according to $Conf{FullKeepCntMin}
1236 # and $Conf{FullAgeMax}.
1238 # First make sure that $Conf{FullAgeMax} is at least bigger
1239 # than $Conf{FullPeriod} * $Conf{FullKeepCnt}, including
1240 # the exponential array case.
1242 my $fullKeepCnt = $Conf{FullKeepCnt};
1243 $fullKeepCnt = [$fullKeepCnt] if ( ref($fullKeepCnt) ne "ARRAY" );
1245 my $fullPeriod = int(0.5 + $Conf{FullPeriod});
1246 $fullPeriod = 7 if ( $fullPeriod <= 0 );
1247 for ( my $i = 0 ; $i < @$fullKeepCnt ; $i++ ) {
1248 $fullAgeMax += $fullKeepCnt->[$i] * $fullPeriod;
1251 $fullAgeMax += $fullPeriod; # add some buffer
1253 if ( $cntFull > $Conf{FullKeepCntMin}
1254 && $oldestFull > $Conf{FullAgeMax}
1255 && $oldestFull > $fullAgeMax
1256 && $Conf{FullKeepCntMin} > 0
1257 && $Conf{FullAgeMax} > 0
1258 && (@Backups <= $firstFull + 1
1259 || !$Backups[$firstFull + 1]{noFill}) ) {
1261 # Only delete a full backup if the Conf settings are satisfied.
1262 # We also must make sure that either this backup is the most
1263 # recent one, or the next backup is filled.
1264 # (We can't deleted a full backup if the next backup is not
1267 print(LOG $bpc->timeStamp,
1268 "removing old full backup $Backups[$firstFull]{num}\n");
1269 BackupRemove($client, \@Backups, $firstFull);
1275 # Do new-style full backup expiry, which includes the the case
1276 # where $Conf{FullKeepCnt} is an array.
1278 last if ( !BackupFullExpire($client, \@Backups) );
1281 $bpc->BackupInfoWrite($client, @Backups) if ( $changes );
1285 # Handle full backup expiry, using exponential periods.
1287 sub BackupFullExpire
1289 my($client, $Backups) = @_;
1291 my $fullPeriod = $Conf{FullPeriod};
1292 my $origFullPeriod = $fullPeriod;
1293 my $fullKeepCnt = $Conf{FullKeepCnt};
1294 my $fullKeepIdx = 0;
1295 my(@delete, @fullList);
1298 # Don't delete anything if $Conf{FullPeriod} or $Conf{FullKeepCnt} are
1299 # not defined - possibly a corrupted config.pl file.
1301 return if ( !defined($Conf{FullPeriod}) || !defined($Conf{FullKeepCnt}) );
1304 # If regular backups are still disabled with $Conf{FullPeriod} < 0,
1305 # we still expire backups based on a typical FullPeriod value - weekly.
1307 $fullPeriod = 7 if ( $fullPeriod <= 0 );
1309 $fullKeepCnt = [$fullKeepCnt] if ( ref($fullKeepCnt) ne "ARRAY" );
1311 for ( my $i = 0 ; $i < @$Backups ; $i++ ) {
1312 next if ( $Backups->[$i]{type} ne "full" );
1313 push(@fullList, $i);
1315 for ( my $k = @fullList - 1 ; $k >= 0 ; $k-- ) {
1316 my $i = $fullList[$k];
1317 my $prevFull = $fullList[$k-1] if ( $k > 0 );
1319 # Don't delete any full that is followed by an unfilled backup,
1320 # since it is needed for restore.
1322 my $noDelete = $i + 1 < @$Backups ? $Backups->[$i+1]{noFill} : 0;
1325 ($fullKeepIdx >= @$fullKeepCnt
1328 && $Backups->[$i]{startTime} - $Backups->[$prevFull]{startTime}
1329 < ($fullPeriod - $origFullPeriod / 2) * 24 * 3600
1333 # Delete the full backup
1335 #print("Deleting backup $i ($prevFull)\n");
1336 unshift(@delete, $i);
1339 while ( $fullKeepIdx < @$fullKeepCnt
1340 && $fullCnt >= $fullKeepCnt->[$fullKeepIdx] ) {
1343 $fullPeriod = 2 * $fullPeriod;
1348 # Now actually delete the backups
1350 for ( my $i = @delete - 1 ; $i >= 0 ; $i-- ) {
1351 print(LOG $bpc->timeStamp,
1352 "removing full backup $Backups->[$delete[$i]]{num}\n");
1353 BackupRemove($client, $Backups, $delete[$i]);
1359 # Removes any partial backups
1361 sub BackupPartialRemove
1363 my($client, $Backups) = @_;
1365 for ( my $i = @$Backups - 1 ; $i >= 0 ; $i-- ) {
1366 next if ( $Backups->[$i]{type} ne "partial" );
1367 BackupRemove($client, $Backups, $i);
1373 my @Backups = $bpc->BackupInfoRead($client);
1378 # Since we got a good backup we should remove any partial dumps
1379 # (the new backup might also be a partial, but that's ok).
1381 BackupPartialRemove($client, \@Backups);
1384 # Number the new backup
1386 for ( my $i = 0 ; $i < @Backups ; $i++ ) {
1387 $num = $Backups[$i]{num} if ( $num < $Backups[$i]{num} );
1390 $bpc->RmTreeDefer("$TopDir/trash", "$Dir/$num") if ( -d "$Dir/$num" );
1391 if ( !rename("$Dir/new", "$Dir/$num") ) {
1392 print(LOG $bpc->timeStamp, "Rename $Dir/new -> $Dir/$num failed\n");
1395 $needLink = 1 if ( -f "$Dir/NewFileList" );
1398 # Add the new backup information to the backup file
1401 $Backups[$i]{num} = $num;
1402 $Backups[$i]{type} = $type;
1403 $Backups[$i]{startTime} = $startTime;
1404 $Backups[$i]{endTime} = $endTime;
1405 $Backups[$i]{size} = $sizeTotal;
1406 $Backups[$i]{nFiles} = $nFilesTotal;
1407 $Backups[$i]{xferErrs} = $stat{xferErrCnt} || 0;
1408 $Backups[$i]{xferBadFile} = $stat{xferBadFileCnt} || 0;
1409 $Backups[$i]{xferBadShare} = $stat{xferBadShareCnt} || 0;
1410 $Backups[$i]{nFilesExist} = $nFilesExist;
1411 $Backups[$i]{sizeExist} = $sizeExist;
1412 $Backups[$i]{sizeExistComp} = $sizeExistComp;
1413 $Backups[$i]{tarErrs} = $tarErrs;
1414 $Backups[$i]{compress} = $Conf{CompressLevel};
1415 $Backups[$i]{noFill} = $type eq "incr" ? 1 : 0;
1416 $Backups[$i]{level} = $incrLevel;
1417 $Backups[$i]{mangle} = 1; # name mangling always on for v1.04+
1418 $Backups[$i]{xferMethod} = $Conf{XferMethod};
1419 $Backups[$i]{charset} = $Conf{ClientCharset};
1420 $Backups[$i]{version} = $bpc->Version();
1422 # Save the main backups file
1424 $bpc->BackupInfoWrite($client, @Backups);
1426 # Save just this backup's info in case the main backups file
1429 BackupPC::Storage->backupInfoWrite($Dir, $Backups[$i]{num},
1432 unlink("$Dir/timeStamp.level0") if ( -f "$Dir/timeStamp.level0" );
1433 foreach my $ext ( qw(bad bad.z) ) {
1434 next if ( !-f "$Dir/XferLOG.$ext" );
1435 unlink("$Dir/XferLOG.$ext.old") if ( -f "$Dir/XferLOG.$ext" );
1436 rename("$Dir/XferLOG.$ext", "$Dir/XferLOG.$ext.old");
1440 # Now remove the bad files, replacing them if possible with links to
1443 foreach my $f ( $xfer->getBadFiles ) {
1445 my $shareM = $bpc->fileNameEltMangle($f->{share});
1446 my $fileM = $bpc->fileNameMangle($f->{file});
1447 unlink("$Dir/$num/$shareM/$fileM");
1448 for ( $j = $i - 1 ; $j >= 0 ; $j-- ) {
1450 if ( $Backups[$j]{mangle} ) {
1451 $file = "$shareM/$fileM";
1453 $file = "$f->{share}/$f->{file}";
1455 next if ( !-f "$Dir/$Backups[$j]{num}/$file" );
1457 my($exists, $digest, $origSize, $outSize, $errs)
1458 = BackupPC::PoolWrite::LinkOrCopy(
1460 "$Dir/$Backups[$j]{num}/$file",
1461 $Backups[$j]{compress},
1462 "$Dir/$num/$shareM/$fileM",
1463 $Conf{CompressLevel});
1466 # the hard link failed, most likely because the target
1467 # file has too many links. We have copied the file
1468 # instead, so add this to the new file list.
1470 if ( !defined($newFilesFH) ) {
1471 my $str = "Appending to NewFileList for $shareM/$fileM\n";
1472 $XferLOG->write(\$str);
1473 open($newFilesFH, ">>", "$TopDir/pc/$client/NewFileList")
1474 || die("can't open $TopDir/pc/$client/NewFileList");
1475 binmode($newFilesFH);
1477 if ( -f "$Dir/$num/$shareM/$fileM" ) {
1478 print($newFilesFH "$digest $origSize $shareM/$fileM\n");
1480 my $str = "Unable to link/copy $num/$f->{share}/$f->{file}"
1481 . " to $Backups[$j]{num}/$f->{share}/$f->{file}\n";
1482 $XferLOG->write(\$str);
1485 my $str = "Bad file $num/$f->{share}/$f->{file} replaced"
1487 . " $Backups[$j]{num}/$f->{share}/$f->{file}\n";
1488 $XferLOG->write(\$str);
1493 my $str = "Removed bad file $num/$f->{share}/$f->{file}"
1494 . " (no older copy to link to)\n";
1495 $XferLOG->write(\$str);
1498 close($newFilesFH) if ( defined($newFilesFH) );
1500 rename("$Dir/XferLOG$fileExt", "$Dir/XferLOG.$num$fileExt");
1501 rename("$Dir/NewFileList", "$Dir/NewFileList.$num");
1507 # Removes a specific backup
1511 my($client, $Backups, $idx) = @_;
1512 my($Dir) = "$TopDir/pc/$client";
1514 if ( $Backups->[$idx]{num} eq "" ) {
1515 print("BackupRemove: ignoring empty backup number for idx $idx\n");
1519 $bpc->RmTreeDefer("$TopDir/trash",
1520 "$Dir/$Backups->[$idx]{num}");
1521 unlink("$Dir/SmbLOG.$Backups->[$idx]{num}")
1522 if ( -f "$Dir/SmbLOG.$Backups->[$idx]{num}" );
1523 unlink("$Dir/SmbLOG.$Backups->[$idx]{num}.z")
1524 if ( -f "$Dir/SmbLOG.$Backups->[$idx]{num}.z" );
1525 unlink("$Dir/XferLOG.$Backups->[$idx]{num}")
1526 if ( -f "$Dir/XferLOG.$Backups->[$idx]{num}" );
1527 unlink("$Dir/XferLOG.$Backups->[$idx]{num}.z")
1528 if ( -f "$Dir/XferLOG.$Backups->[$idx]{num}.z" );
1529 splice(@{$Backups}, $idx, 1);
1532 sub CorrectHostCheck
1534 my($hostIP, $host) = @_;
1535 return if ( $hostIP eq $host && !$Conf{FixedIPNetBiosNameCheck}
1536 || $Conf{NmbLookupCmd} eq "" );
1537 my($netBiosHost, $netBiosUser) = $bpc->NetBiosInfoGet($hostIP);
1538 return "host $host has mismatching netbios name $netBiosHost"
1539 if ( $netBiosHost ne $host );
1544 # The Xfer method might tell us from time to time about processes
1545 # it forks. We tell BackupPC about this (for status displays) and
1546 # keep track of the pids in case we cancel the backup
1551 @xferPid = grep(/./, @xferPid);
1552 return if ( !@xferPid && $tarPid < 0 );
1553 my @pids = @xferPid;
1554 push(@pids, $tarPid) if ( $tarPid > 0 );
1555 my $str = join(",", @pids);
1556 $XferLOG->write(\"Xfer PIDs are now $str\n") if ( defined($XferLOG) );
1557 print("xferPids $str\n");
1561 # Run an optional pre- or post-dump command
1565 my($cmdType, $sharename) = @_;
1567 return if ( !defined($Conf{$cmdType}) );
1573 user => $Hosts->{$client}{user},
1574 moreUsers => $Hosts->{$client}{moreUsers},
1575 share => $ShareNames->[0],
1576 shares => $ShareNames,
1577 XferMethod => $Conf{XferMethod},
1578 sshPath => $Conf{SshPath},
1580 XferLOG => $XferLOG,
1582 xferOK => $stat{xferOK} || 0,
1583 hostError => $stat{hostError},
1585 cmdType => $cmdType,
1588 if ($cmdType eq 'DumpPreShareCmd' || $cmdType eq 'DumpPostShareCmd') {
1589 $vars->{share} = $sharename;
1592 my $cmd = $bpc->cmdVarSubstitute($Conf{$cmdType}, $vars);
1593 $XferLOG->write(\"Executing $cmdType: @$cmd\n");
1595 # Run the user's command, dumping the stdout/stderr into the
1596 # Xfer log file. Also supply the optional $vars and %Conf in
1597 # case the command is really perl code instead of a shell
1600 $bpc->cmdSystemOrEval($cmd,
1602 $XferLOG->write(\$_[0]);