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 etc),
35 # extracting the dump into $TopDir/pc/$client/new. The xfer output is
36 # 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 2.1.0_CVS, released 3 Jul 2003.
75 # See http://backuppc.sourceforge.net.
77 #========================================================================
81 use lib "/usr/local/BackupPC/lib";
83 use BackupPC::FileZIO;
84 use BackupPC::Xfer::Smb;
85 use BackupPC::Xfer::Tar;
86 use BackupPC::Xfer::Rsync;
91 ###########################################################################
93 ###########################################################################
95 die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) );
96 my $TopDir = $bpc->TopDir();
97 my $BinDir = $bpc->BinDir();
98 my %Conf = $bpc->Conf();
105 if ( !getopts("defiv", \%opts) || @ARGV != 1 ) {
106 print("usage: $0 [-d] [-e] [-f] [-i] [-v] <client>\n");
109 if ( $ARGV[0] !~ /^([\w\.\s-]+)$/ ) {
110 print("$0: bad client name '$ARGV[0]'\n");
113 my $client = $1; # BackupPC's client name (might not be real host name)
114 my $hostIP; # this is the IP address
115 my $host; # this is the real host name
117 my($clientURI, $user);
119 $bpc->verbose(1) if ( $opts{v} );
123 # The client name $client is simply a DHCP address. We need to check
124 # if there is any machine at this address, and if so, get the actual
125 # host name via NetBios using nmblookup.
128 if ( $bpc->CheckHostAlive($hostIP) < 0 ) {
129 print(STDERR "Exiting because CheckHostAlive($hostIP) failed\n")
133 if ( $Conf{NmbLookupCmd} eq "" ) {
134 print(STDERR "Exiting because \$Conf{NmbLookupCmd} is empty\n")
138 ($client, $user) = $bpc->NetBiosInfoGet($hostIP);
139 if ( $client !~ /^([\w\.\s-]+)$/ ) {
140 print(STDERR "Exiting because NetBiosInfoGet($hostIP) returned"
141 . " '$client', an invalid host name\n") if ( $opts{v} );
144 $Hosts = $bpc->HostInfoRead($client);
147 $Hosts = $bpc->HostInfoRead($client);
149 if ( !defined($Hosts->{$client}) ) {
150 print(STDERR "Exiting because host $client does not exist in the"
151 . " hosts file\n") if ( $opts{v} );
155 my $Dir = "$TopDir/pc/$client";
160 # Re-read config file, so we can include the PC-specific config
162 $clientURI = $bpc->uriEsc($client);
163 if ( defined(my $error = $bpc->ConfigRead($client)) ) {
164 print("dump failed: Can't read PC's config file: $error\n");
167 %Conf = $bpc->Conf();
170 # Catch various signals
172 $SIG{INT} = \&catch_signal;
173 $SIG{ALRM} = \&catch_signal;
174 $SIG{TERM} = \&catch_signal;
175 $SIG{PIPE} = \&catch_signal;
176 $SIG{STOP} = \&catch_signal;
177 $SIG{TSTP} = \&catch_signal;
178 $SIG{TTIN} = \&catch_signal;
182 # Make sure we eventually timeout if there is no activity from
183 # the data transport program.
185 alarm($Conf{ClientTimeout});
187 mkpath($Dir, 0, 0777) if ( !-d $Dir );
188 if ( !-f "$Dir/LOCK" ) {
189 open(LOCK, ">", "$Dir/LOCK") && close(LOCK);
191 open(LOG, ">>", "$Dir/LOG");
192 select(LOG); $| = 1; select(STDOUT);
195 # For the -e option we just expire backups and quit
198 BackupExpire($client);
203 # For archive hosts we don't bother any further
205 if ($Conf{XferMethod} eq "archive" ) {
211 # In the non-DHCP case, make sure the host can be looked up
212 # via NS, or otherwise find the IP address via NetBios.
214 if ( $Conf{ClientNameAlias} ne "" ) {
215 $host = $Conf{ClientNameAlias};
219 if ( !defined(gethostbyname($host)) ) {
221 # Ok, NS doesn't know about it. Maybe it is a NetBios name
224 print(STDERR "Name server doesn't know about $host; trying NetBios\n")
226 if ( !defined($hostIP = $bpc->NetBiosHostIPFind($host)) ) {
227 print(LOG $bpc->timeStamp, "Can't find host $host via netbios\n");
228 print("host not found\n");
236 ###########################################################################
237 # Figure out what to do and do it
238 ###########################################################################
241 # See if we should skip this host during a certain range
244 my $err = $bpc->ServerConnect($Conf{ServerHost}, $Conf{ServerPort});
246 print("Can't connect to server ($err)\n");
247 print(LOG $bpc->timeStamp, "Can't connect to server ($err)\n");
250 my $reply = $bpc->ServerMesg("status host($clientURI)");
251 $reply = $1 if ( $reply =~ /(.*)/s );
254 $bpc->ServerDisconnect();
257 # For DHCP tell BackupPC which host this is
260 if ( $StatusHost{activeJob} ) {
261 # oops, something is already running for this host
262 print(STDERR "Exiting because backup is already running for $client\n")
266 print("DHCP $hostIP $clientURI\n");
269 my($needLink, @Backups, $type, $lastBkupNum, $lastFullBkupNum);
274 if ( $Conf{FullPeriod} == -1 && !$opts{f} && !$opts{i}
275 || $Conf{FullPeriod} == -2 ) {
276 NothingToDo($needLink);
279 if ( !$opts{i} && !$opts{f} && $Conf{BlackoutGoodCnt} >= 0
280 && $StatusHost{aliveCnt} >= $Conf{BlackoutGoodCnt} ) {
281 my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
282 my($currHours) = $hour + $min / 60 + $sec / 3600;
283 if ( $Conf{BlackoutHourBegin} <= $currHours
284 && $currHours <= $Conf{BlackoutHourEnd}
285 && grep($_ == $wday, @{$Conf{BlackoutWeekDays}}) ) {
286 # print(LOG $bpc->timeStamp, "skipping because of blackout"
287 # . " (alive $StatusHost{aliveCnt} times)\n");
288 NothingToDo($needLink);
292 if ( !$opts{i} && !$opts{f} && $StatusHost{backoffTime} > time ) {
293 printf(LOG "%sskipping because of user requested delay (%.1f hours left)",
294 $bpc->timeStamp, ($StatusHost{backoffTime} - time) / 3600);
295 NothingToDo($needLink);
299 # Now see if there are any old backups we should delete
301 BackupExpire($client);
304 # Read Backup information, and find times of the most recent full and
305 # incremental backups
307 @Backups = $bpc->BackupInfoRead($client);
308 for ( my $i = 0 ; $i < @Backups ; $i++ ) {
309 $needLink = 1 if ( $Backups[$i]{nFilesNew} eq ""
310 || -f "$Dir/NewFileList.$Backups[$i]{num}" );
311 $lastBkupNum = $Backups[$i]{num};
312 if ( $Backups[$i]{type} eq "full" ) {
313 if ( $lastFull < $Backups[$i]{startTime} ) {
314 $lastFull = $Backups[$i]{startTime};
315 $lastFullBkupNum = $Backups[$i]{num};
317 } elsif ( $Backups[$i]{type} eq "incr" ) {
318 $lastIncr = $Backups[$i]{startTime}
319 if ( $lastIncr < $Backups[$i]{startTime} );
320 } elsif ( $Backups[$i]{type} eq "partial" ) {
326 # Decide whether we do nothing, or a full or incremental backup.
330 || (!$opts{i} && (time - $lastFull > $Conf{FullPeriod} * 24*3600
331 && time - $lastIncr > $Conf{IncrPeriod} * 24*3600)) ) {
333 } elsif ( $opts{i} || (time - $lastIncr > $Conf{IncrPeriod} * 24*3600
334 && time - $lastFull > $Conf{IncrPeriod} * 24*3600) ) {
337 NothingToDo($needLink);
341 # Check if $host is alive
343 my $delay = $bpc->CheckHostAlive($hostIP);
345 print(LOG $bpc->timeStamp, "no ping response\n");
346 print("no ping response\n");
347 print("link $clientURI\n") if ( $needLink );
349 } elsif ( $delay > $Conf{PingMaxMsec} ) {
350 printf(LOG "%sping too slow: %.4gmsec\n", $bpc->timeStamp, $delay);
351 printf("ping too slow: %.4gmsec (threshold is %gmsec)\n",
352 $delay, $Conf{PingMaxMsec});
353 print("link $clientURI\n") if ( $needLink );
358 # Make sure it is really the machine we expect (only for fixed addresses,
359 # since we got the DHCP address above).
361 if ( !$opts{d} && (my $errMsg = CorrectHostCheck($hostIP, $host)) ) {
362 print(LOG $bpc->timeStamp, "dump failed: $errMsg\n");
363 print("dump failed: $errMsg\n");
365 } elsif ( $opts{d} ) {
366 print(LOG $bpc->timeStamp, "$host is dhcp $hostIP, user is $user\n");
370 # Get a clean directory $Dir/new
372 $bpc->RmTreeDefer("$TopDir/trash", "$Dir/new") if ( -d "$Dir/new" );
375 # Setup file extension for compression and open XferLOG output file
377 $Conf{CompressLevel} = 0 if ( !BackupPC::FileZIO->compOk );
378 my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : "";
379 my $XferLOG = BackupPC::FileZIO->open("$Dir/XferLOG$fileExt", 1,
380 $Conf{CompressLevel});
381 if ( !defined($XferLOG) ) {
382 print(LOG $bpc->timeStamp, "dump failed: unable to open/create"
383 . " $Dir/XferLOG$fileExt\n");
384 print("dump failed: unable to open/create $Dir/XferLOG$fileExt\n");
387 $XferLOG->writeTeeStdout(1) if ( $opts{v} );
388 unlink("$Dir/NewFileList");
389 my $startTime = time();
394 my $sizeExistComp = 0;
397 my($logMsg, %stat, $xfer, $ShareNames, $noFilesErr);
400 if ( $Conf{XferMethod} eq "tar" ) {
401 $ShareNames = $Conf{TarShareName};
402 } elsif ( $Conf{XferMethod} eq "rsync" || $Conf{XferMethod} eq "rsyncd" ) {
403 $ShareNames = $Conf{RsyncShareName};
405 $ShareNames = $Conf{SmbShareName};
408 $ShareNames = [ $ShareNames ] unless ref($ShareNames) eq "ARRAY";
411 # Run an optional pre-dump command
413 UserCommandRun("DumpPreUserCmd");
417 # Now backup each of the shares
419 for my $shareName ( @$ShareNames ) {
422 $stat{xferOK} = $stat{hostAbort} = undef;
423 $stat{hostError} = $stat{lastOutputLine} = undef;
424 if ( -d "$Dir/new/$shareName" ) {
425 print(LOG $bpc->timeStamp,
426 "unexpected repeated share name $shareName skipped\n");
430 if ( $Conf{XferMethod} eq "tar" ) {
432 # Use tar (eg: tar/ssh) as the transport program.
434 $xfer = BackupPC::Xfer::Tar->new($bpc);
435 } elsif ( $Conf{XferMethod} eq "rsync" || $Conf{XferMethod} eq "rsyncd" ) {
437 # Use rsync as the transport program.
439 if ( !defined($xfer = BackupPC::Xfer::Rsync->new($bpc)) ) {
440 my $errStr = BackupPC::Xfer::Rsync::errStr;
441 print(LOG $bpc->timeStamp, "dump failed: $errStr\n");
442 print("dump failed: $errStr\n");
443 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
448 # Default is to use smbclient (smb) as the transport program.
450 $xfer = BackupPC::Xfer::Smb->new($bpc);
453 my $useTar = $xfer->useTar;
457 # This xfer method outputs a tar format file, so we start a
458 # BackupPC_tarExtract to extract the data.
460 # Create a socketpair to connect the Xfer method to BackupPC_tarExtract
461 # WH is the write handle for writing, provided to the transport
462 # program, and RH is the other end of the socket for reading,
463 # provided to BackupPC_tarExtract.
465 if ( socketpair(RH, WH, AF_UNIX, SOCK_STREAM, PF_UNSPEC) ) {
466 shutdown(RH, 1); # no writing to this socket
467 shutdown(WH, 0); # no reading from this socket
468 setsockopt(RH, SOL_SOCKET, SO_RCVBUF, 8 * 65536);
469 setsockopt(WH, SOL_SOCKET, SO_SNDBUF, 8 * 65536);
472 # Default to pipe() if socketpair() doesn't work.
478 # fork a child for BackupPC_tarExtract. TAR is a file handle
479 # on which we (the parent) read the stdout & stderr from
480 # BackupPC_tarExtract.
482 if ( !defined($tarPid = open(TAR, "-|")) ) {
483 print(LOG $bpc->timeStamp, "can't fork to run tar\n");
484 print("can't fork to run tar\n");
492 # This is the tar child. Close the write end of the pipe,
493 # clone STDERR to STDOUT, clone STDIN from RH, and then
494 # exec BackupPC_tarExtract.
499 open(STDERR, ">&STDOUT");
502 exec("$BinDir/BackupPC_tarExtract", $client, $shareName,
503 $Conf{CompressLevel});
504 print(LOG $bpc->timeStamp,
505 "can't exec $BinDir/BackupPC_tarExtract\n");
508 } elsif ( !defined($newFilesFH) ) {
510 # We need to create the NewFileList output file
513 open(NEW_FILES, ">", "$TopDir/pc/$client/NewFileList")
514 || die("can't open $TopDir/pc/$client/NewFileList");
515 $newFilesFH = *NEW_FILES;
520 # Run the transport program
526 shareName => $shareName,
530 newFilesFH => $newFilesFH,
533 lastFull => $lastFull,
534 lastBkupNum => $lastBkupNum,
535 lastFullBkupNum => $lastFullBkupNum,
536 backups => \@Backups,
537 compress => $Conf{CompressLevel},
538 XferMethod => $Conf{XferMethod},
539 pidHandler => \&pidHandler,
542 if ( !defined($logMsg = $xfer->start()) ) {
543 print(LOG $bpc->timeStamp, "xfer start failed: ", $xfer->errStr, "\n");
544 print("dump failed: ", $xfer->errStr, "\n");
545 print("link $clientURI\n") if ( $needLink );
547 # kill off the tar process, first nicely then forcefully
559 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
563 @xferPid = $xfer->xferPid;
567 # The parent must close both handles on the pipe since the children
568 # are using these handles now.
573 print(LOG $bpc->timeStamp, $logMsg, "\n");
574 print("started $type dump, share=$shareName\n");
576 pidHandler(@xferPid);
580 # Parse the output of the transfer program and BackupPC_tarExtract
581 # while they run. Since we might be reading from two or more children
584 my($FDread, $tarOut, $mesg);
585 vec($FDread, fileno(TAR), 1) = 1 if ( $useTar );
586 $xfer->setSelectMask(\$FDread);
590 last if ( $FDread =~ /^\0*$/ );
591 select(my $rout = $FDread, undef, $ein, undef);
593 if ( vec($rout, fileno(TAR), 1) ) {
594 if ( sysread(TAR, $mesg, 8192) <= 0 ) {
595 vec($FDread, fileno(TAR), 1) = 0;
601 while ( $tarOut =~ /(.*?)[\n\r]+(.*)/s ) {
604 $XferLOG->write(\"tarExtract: $_\n");
605 if ( /^Done: (\d+) errors, (\d+) filesExist, (\d+) sizeExist, (\d+) sizeExistComp, (\d+) filesTotal, (\d+) sizeTotal/ ) {
609 $sizeExistComp += $4;
615 last if ( !$xfer->readOutput(\$FDread, $rout) );
616 while ( my $str = $xfer->logMsgGet ) {
617 print(LOG $bpc->timeStamp, "xfer: $str\n");
619 if ( $xfer->getStats->{fileCnt} == 1 ) {
621 # Make sure it is still the machine we expect. We do this while
622 # the transfer is running to avoid a potential race condition if
623 # the ip address was reassigned by dhcp just before we started
626 if ( my $errMsg = CorrectHostCheck($hostIP, $host) ) {
627 $stat{hostError} = $errMsg if ( $stat{hostError} eq "" );
634 # otherwise the xfer module does everything for us
636 my @results = $xfer->run();
637 $tarErrs += $results[0];
638 $nFilesExist += $results[1];
639 $sizeExist += $results[2];
640 $sizeExistComp += $results[3];
641 $nFilesTotal += $results[4];
642 $sizeTotal += $results[5];
646 # Merge the xfer status (need to accumulate counts)
648 my $newStat = $xfer->getStats;
649 if ( $newStat->{fileCnt} == 0 ) {
650 $noFilesErr ||= "No files dumped for share $shareName";
652 foreach my $k ( (keys(%stat), keys(%$newStat)) ) {
653 next if ( !defined($newStat->{$k}) );
654 if ( $k =~ /Cnt$/ ) {
655 $stat{$k} += $newStat->{$k};
656 delete($newStat->{$k});
659 if ( !defined($stat{$k}) ) {
660 $stat{$k} = $newStat->{$k};
661 delete($newStat->{$k});
665 $stat{xferOK} = 0 if ( $stat{hostError} || $stat{hostAbort} );
666 if ( !$stat{xferOK} ) {
668 # kill off the tranfer program, first nicely then forcefully
676 # kill off the tar process, first nicely then forcefully
684 # don't do any more shares on this host
691 # If this is a full, and any share had zero files then consider the dump bad
693 if ( $type eq "full" && $stat{hostError} eq ""
694 && length($noFilesErr) && $Conf{BackupZeroFilesIsFatal} ) {
695 $stat{hostError} = $noFilesErr;
700 # Do one last check to make sure it is still the machine we expect.
702 if ( $stat{xferOK} && (my $errMsg = CorrectHostCheck($hostIP, $host)) ) {
703 $stat{hostError} = $errMsg;
707 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
709 close($newFilesFH) if ( defined($newFilesFH) );
711 my $endTime = time();
714 # If the dump failed, clean up
716 if ( !$stat{xferOK} ) {
718 # wait a short while and see if the system is still alive
720 $stat{hostError} = $stat{lastOutputLine} if ( $stat{hostError} eq "" );
721 if ( $stat{hostError} ) {
722 print(LOG $bpc->timeStamp,
723 "Got fatal error during xfer ($stat{hostError})\n");
726 if ( $bpc->CheckHostAlive($hostIP) < 0 ) {
727 $stat{hostAbort} = 1;
729 if ( $stat{hostAbort} ) {
730 $stat{hostError} = "lost network connection during backup";
732 print(LOG $bpc->timeStamp, "Dump aborted ($stat{hostError})\n");
740 my $newNum = BackupSave();
742 my $otherCount = $stat{xferErrCnt} - $stat{xferBadFileCnt}
743 - $stat{xferBadShareCnt};
744 print(LOG $bpc->timeStamp,
745 "$type backup $newNum complete, $stat{fileCnt} files,"
746 . " $stat{byteCnt} bytes,"
747 . " $stat{xferErrCnt} xferErrs ($stat{xferBadFileCnt} bad files,"
748 . " $stat{xferBadShareCnt} bad shares, $otherCount other)\n");
750 BackupExpire($client);
752 print("$type backup complete\n");
754 ###########################################################################
756 ###########################################################################
762 print("nothing to do\n");
763 print("link $clientURI\n") if ( $needLink );
772 # Children quit quietly on ALRM
774 exit(1) if ( $Pid != $$ && $signame eq "ALRM" );
777 # Ignore other signals in children
779 return if ( $Pid != $$ );
781 print(LOG $bpc->timeStamp, "cleaning up after signal $signame\n");
782 $SIG{$signame} = 'IGNORE';
783 UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
784 $XferLOG->write(\"exiting after signal $signame\n");
796 if ( $signame eq "INT" ) {
797 $stat{hostError} = "aborted by user (signal=$signame)";
799 $stat{hostError} = "received signal=$signame";
804 sub BackupFailCleanup
806 my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : "";
809 || ($nFilesTotal == 0 && $xfer->getStats->{fileCnt} == 0) ) {
811 # No point in saving this dump; get rid of eveything.
813 unlink("$Dir/timeStamp.level0");
814 unlink("$Dir/SmbLOG.bad");
815 unlink("$Dir/SmbLOG.bad$fileExt");
816 unlink("$Dir/XferLOG.bad");
817 unlink("$Dir/XferLOG.bad$fileExt");
818 unlink("$Dir/NewFileList");
819 rename("$Dir/XferLOG$fileExt", "$Dir/XferLOG.bad$fileExt");
820 $bpc->RmTreeDefer("$TopDir/trash", "$Dir/new") if ( -d "$Dir/new" );
821 print("dump failed: $stat{hostError}\n");
822 print("link $clientURI\n") if ( $needLink );
826 # Ok, now we should save this as a partial dump
829 my $newNum = BackupSave();
830 print("dump failed: $stat{hostError}\n");
831 print("link $clientURI\n") if ( $needLink );
832 print(LOG $bpc->timeStamp, "Saved partial dump $newNum\n");
837 # Decide which old backups should be expired by moving them
843 my($Dir) = "$TopDir/pc/$client";
844 my(@Backups) = $bpc->BackupInfoRead($client);
845 my($cntFull, $cntIncr, $firstFull, $firstIncr, $oldestIncr, $oldestFull);
848 $cntFull = $cntIncr = 0;
849 $oldestIncr = $oldestFull = 0;
850 for ( my $i = 0 ; $i < @Backups ; $i++ ) {
851 if ( $Backups[$i]{type} eq "full" ) {
852 $firstFull = $i if ( $cntFull == 0 );
855 $firstIncr = $i if ( $cntIncr == 0 );
859 $oldestIncr = (time - $Backups[$firstIncr]{startTime}) / (24 * 3600)
861 $oldestFull = (time - $Backups[$firstFull]{startTime}) / (24 * 3600)
863 if ( $cntIncr > $Conf{IncrKeepCnt}
864 || ($cntIncr > $Conf{IncrKeepCntMin}
865 && $oldestIncr > $Conf{IncrAgeMax})
866 && (@Backups <= $firstIncr + 1
867 || $Backups[$firstIncr]{noFill}
868 || !$Backups[$firstIncr + 1]{noFill}) ) {
870 # Only delete an incr backup if the Conf settings are satisfied.
871 # We also must make sure that either this backup is the most
872 # recent one, or it is not filled, or the next backup is filled.
873 # (We can't deleted a filled incr if the next backup is not
876 print(LOG $bpc->timeStamp,
877 "removing incr backup $Backups[$firstIncr]{num}\n");
878 BackupRemove($client, \@Backups, $firstIncr);
879 } elsif ( ($cntFull > $Conf{FullKeepCnt}
880 || ($cntFull > $Conf{FullKeepCntMin}
881 && $oldestFull > $Conf{FullAgeMax}))
882 && (@Backups <= $firstFull + 1
883 || !$Backups[$firstFull + 1]{noFill}) ) {
885 # Only delete a full backup if the Conf settings are satisfied.
886 # We also must make sure that either this backup is the most
887 # recent one, or the next backup is filled.
888 # (We can't deleted a full backup if the next backup is not
891 print(LOG $bpc->timeStamp,
892 "removing full backup $Backups[$firstFull]{num}\n");
893 BackupRemove($client, \@Backups, $firstFull);
898 $bpc->BackupInfoWrite($client, @Backups);
902 # Removes any partial backups
904 sub BackupPartialRemove
906 my($client, $Backups) = @_;
908 for ( my $i = @$Backups - 1 ; $i >= 0 ; $i-- ) {
909 next if ( $Backups->[$i]{type} ne "partial" );
910 BackupRemove($client, $Backups, $i);
916 my @Backups = $bpc->BackupInfoRead($client);
920 # Since we got a good backup we should remove any partial dumps
921 # (the new backup might also be a partial, but that's ok).
923 BackupPartialRemove($client, \@Backups);
926 # Number the new backup
928 for ( my $i = 0 ; $i < @Backups ; $i++ ) {
929 $num = $Backups[$i]{num} if ( $num < $Backups[$i]{num} );
932 $bpc->RmTreeDefer("$TopDir/trash", "$Dir/$num")
933 if ( -d "$Dir/$num" );
934 if ( !rename("$Dir/new", "$Dir/$num") ) {
935 print(LOG $bpc->timeStamp,
936 "Rename $Dir/new -> $Dir/$num failed\n");
939 rename("$Dir/XferLOG$fileExt", "$Dir/XferLOG.$num$fileExt");
940 rename("$Dir/NewFileList", "$Dir/NewFileList.$num");
943 # Add the new backup information to the backup file
946 $Backups[$i]{num} = $num;
947 $Backups[$i]{type} = $type;
948 $Backups[$i]{startTime} = $startTime;
949 $Backups[$i]{endTime} = $endTime;
950 $Backups[$i]{size} = $sizeTotal;
951 $Backups[$i]{nFiles} = $nFilesTotal;
952 $Backups[$i]{xferErrs} = $stat{xferErrCnt} || 0;
953 $Backups[$i]{xferBadFile} = $stat{xferBadFileCnt} || 0;
954 $Backups[$i]{xferBadShare} = $stat{xferBadShareCnt} || 0;
955 $Backups[$i]{nFilesExist} = $nFilesExist;
956 $Backups[$i]{sizeExist} = $sizeExist;
957 $Backups[$i]{sizeExistComp} = $sizeExistComp;
958 $Backups[$i]{tarErrs} = $tarErrs;
959 $Backups[$i]{compress} = $Conf{CompressLevel};
960 $Backups[$i]{noFill} = $type eq "incr" ? 1 : 0;
961 $Backups[$i]{level} = $type eq "incr" ? 1 : 0;
962 $Backups[$i]{mangle} = 1; # name mangling always on for v1.04+
963 $bpc->BackupInfoWrite($client, @Backups);
965 unlink("$Dir/timeStamp.level0");
968 # Now remove the bad files, replacing them if possible with links to
971 foreach my $f ( $xfer->getBadFiles ) {
973 my $shareM = $bpc->fileNameEltMangle($f->{share});
974 my $fileM = $bpc->fileNameMangle($f->{file});
975 unlink("$Dir/$num/$shareM/$fileM");
976 for ( $j = $i - 1 ; $j >= 0 ; $j-- ) {
978 if ( $Backups[$j]{mangle} ) {
979 $file = "$shareM/$fileM";
981 $file = "$f->{share}/$f->{file}";
983 next if ( !-f "$Dir/$Backups[$j]{num}/$file" );
984 if ( !link("$Dir/$Backups[$j]{num}/$file",
985 "$Dir/$num/$shareM/$fileM") ) {
986 print(LOG $bpc->timeStamp,
987 "Unable to link $num/$shareM/$fileM to"
988 . " $Backups[$j]{num}/$file\n");
990 print(LOG $bpc->timeStamp,
991 "Bad file $num/$shareM/$fileM replaced by link to"
992 . " $Backups[$j]{num}/$file\n");
997 print(LOG $bpc->timeStamp,
998 "Removed bad file $num/$shareM/$fileM (no older"
999 . " copy to link to)\n");
1006 # Removes a specific backup
1010 my($client, $Backups, $idx) = @_;
1011 my($Dir) = "$TopDir/pc/$client";
1013 $bpc->RmTreeDefer("$TopDir/trash",
1014 "$Dir/$Backups->[$idx]{num}");
1015 unlink("$Dir/SmbLOG.$Backups->[$idx]{num}")
1016 if ( -f "$Dir/SmbLOG.$Backups->[$idx]{num}" );
1017 unlink("$Dir/SmbLOG.$Backups->[$idx]{num}.z")
1018 if ( -f "$Dir/SmbLOG.$Backups->[$idx]{num}.z" );
1019 unlink("$Dir/XferLOG.$Backups->[$idx]{num}")
1020 if ( -f "$Dir/XferLOG.$Backups->[$idx]{num}" );
1021 unlink("$Dir/XferLOG.$Backups->[$idx]{num}.z")
1022 if ( -f "$Dir/XferLOG.$Backups->[$idx]{num}.z" );
1023 splice(@{$Backups}, $idx, 1);
1026 sub CorrectHostCheck
1028 my($hostIP, $host) = @_;
1029 return if ( $hostIP eq $host && !$Conf{FixedIPNetBiosNameCheck}
1030 || $Conf{NmbLookupCmd} eq "" );
1031 my($netBiosHost, $netBiosUser) = $bpc->NetBiosInfoGet($hostIP);
1032 return "host $host has mismatching netbios name $netBiosHost"
1033 if ( $netBiosHost ne $host );
1038 # The Xfer method might tell us from time to time about processes
1039 # it forks. We tell BackupPC about this (for status displays) and
1040 # keep track of the pids in case we cancel the backup
1045 @xferPid = grep(/./, @xferPid);
1046 return if ( !@xferPid && $tarPid < 0 );
1047 my @pids = @xferPid;
1048 push(@pids, $tarPid) if ( $tarPid > 0 );
1049 my $str = join(",", @pids);
1050 $XferLOG->write(\"Xfer PIDs are now $str\n") if ( defined($XferLOG) );
1051 print("xferPids $str\n");
1055 # Run an optional pre- or post-dump command
1061 return if ( !defined($Conf{$type}) );
1067 user => $Hosts->{$client}{user},
1068 moreUsers => $Hosts->{$client}{moreUsers},
1069 share => $ShareNames->[0],
1070 shares => $ShareNames,
1071 XferMethod => $Conf{XferMethod},
1072 sshPath => $Conf{SshPath},
1074 XferLOG => $XferLOG,
1076 xferOK => $stat{xferOK} || 0,
1077 hostError => $stat{hostError},
1080 my $cmd = $bpc->cmdVarSubstitute($Conf{$type}, $vars);
1081 $XferLOG->write(\"Executing $type: @$cmd\n");
1083 # Run the user's command, dumping the stdout/stderr into the
1084 # Xfer log file. Also supply the optional $vars and %Conf in
1085 # case the command is really perl code instead of a shell
1088 $bpc->cmdSystemOrEval($cmd,
1090 $XferLOG->write(\$_[0]);