/[BackupPC]/trunk/bin/BackupPC_dump
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
ViewVC logotype

Annotation of /trunk/bin/BackupPC_dump

Parent Directory Parent Directory | Revision Log Revision Log


Revision 316 - (hide annotations)
Mon Jan 30 13:37:17 2006 UTC (18 years, 4 months ago) by dpavlin
File size: 43355 byte(s)
 r9152@llin:  dpavlin | 2006-01-30 14:11:45 +0100
 update to upstream 2.1.2

1 dpavlin 1 #!/bin/perl
2     #============================================================= -*-perl-*-
3     #
4     # BackupPC_dump: Dump a single client.
5     #
6     # DESCRIPTION
7     #
8     # Usage: BackupPC_dump [-i] [-f] [-d] [-e] [-v] <client>
9     #
10     # Flags:
11     #
12     # -i Do an incremental dump, overriding any scheduling (but a full
13     # dump will be done if no dumps have yet succeeded)
14     #
15     # -f Do a full dump, overriding any scheduling.
16     #
17     # -d Host is a DHCP pool address, and the client argument
18     # just an IP address. We lookup the NetBios name from
19     # the IP address.
20     #
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
25     # old backups.
26     #
27     # -v verbose. for manual usage: prints failure reasons in more detail.
28     #
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.
33     #
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.
37     #
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.
43     #
44     # If the dump fails:
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
47     # for later viewing.
48     #
49     # BackupPC_dump communicates to BackupPC via printing to STDOUT.
50     #
51     # AUTHOR
52     # Craig Barratt <cbarratt@users.sourceforge.net>
53     #
54     # COPYRIGHT
55     # Copyright (C) 2001-2003 Craig Barratt
56     #
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.
61     #
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.
66     #
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
70     #
71     #========================================================================
72     #
73 dpavlin 316 # Version 2.1.2, released 5 Sep 2005.
74 dpavlin 1 #
75     # See http://backuppc.sourceforge.net.
76     #
77     #========================================================================
78    
79     use strict;
80     no utf8;
81     use lib "__INSTALLDIR__/lib";
82     use BackupPC::Lib;
83     use BackupPC::FileZIO;
84     use BackupPC::Xfer::Smb;
85     use BackupPC::Xfer::Tar;
86     use BackupPC::Xfer::Rsync;
87     use Socket;
88     use File::Path;
89     use File::Find;
90     use Getopt::Std;
91    
92     ###########################################################################
93     # Initialize
94     ###########################################################################
95    
96     die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) );
97     my $TopDir = $bpc->TopDir();
98     my $BinDir = $bpc->BinDir();
99     my %Conf = $bpc->Conf();
100     my $NeedPostCmd;
101     my $Hosts;
102     my $SigName;
103     my $Abort;
104    
105     $bpc->ChildInit();
106    
107     my %opts;
108     if ( !getopts("defiv", \%opts) || @ARGV != 1 ) {
109     print("usage: $0 [-d] [-e] [-f] [-i] [-v] <client>\n");
110     exit(1);
111     }
112     if ( $ARGV[0] !~ /^([\w\.\s-]+)$/ ) {
113     print("$0: bad client name '$ARGV[0]'\n");
114     exit(1);
115     }
116     my $client = $1; # BackupPC's client name (might not be real host name)
117     my $hostIP; # this is the IP address
118     my $host; # this is the real host name
119    
120     my($clientURI, $user);
121    
122     $bpc->verbose(1) if ( $opts{v} );
123    
124     if ( $opts{d} ) {
125     #
126     # The client name $client is simply a DHCP address. We need to check
127     # if there is any machine at this address, and if so, get the actual
128     # host name via NetBios using nmblookup.
129     #
130     $hostIP = $client;
131     if ( $bpc->CheckHostAlive($hostIP) < 0 ) {
132     print(STDERR "Exiting because CheckHostAlive($hostIP) failed\n")
133     if ( $opts{v} );
134     exit(1);
135     }
136     if ( $Conf{NmbLookupCmd} eq "" ) {
137     print(STDERR "Exiting because \$Conf{NmbLookupCmd} is empty\n")
138     if ( $opts{v} );
139     exit(1);
140     }
141     ($client, $user) = $bpc->NetBiosInfoGet($hostIP);
142     if ( $client !~ /^([\w\.\s-]+)$/ ) {
143     print(STDERR "Exiting because NetBiosInfoGet($hostIP) returned"
144     . " '$client', an invalid host name\n") if ( $opts{v} );
145     exit(1)
146     }
147     $Hosts = $bpc->HostInfoRead($client);
148     $host = $client;
149     } else {
150     $Hosts = $bpc->HostInfoRead($client);
151     }
152     if ( !defined($Hosts->{$client}) ) {
153     print(STDERR "Exiting because host $client does not exist in the"
154     . " hosts file\n") if ( $opts{v} );
155     exit(1)
156     }
157    
158     my $Dir = "$TopDir/pc/$client";
159     my @xferPid = ();
160     my $tarPid = -1;
161    
162     #
163     # Re-read config file, so we can include the PC-specific config
164     #
165     $clientURI = $bpc->uriEsc($client);
166     if ( defined(my $error = $bpc->ConfigRead($client)) ) {
167     print("dump failed: Can't read PC's config file: $error\n");
168     exit(1);
169     }
170     %Conf = $bpc->Conf();
171    
172     #
173     # Catch various signals
174     #
175     $SIG{INT} = \&catch_signal;
176     $SIG{ALRM} = \&catch_signal;
177     $SIG{TERM} = \&catch_signal;
178     $SIG{PIPE} = \&catch_signal;
179     $SIG{STOP} = \&catch_signal;
180     $SIG{TSTP} = \&catch_signal;
181     $SIG{TTIN} = \&catch_signal;
182     my $Pid = $$;
183    
184     #
185     # Make sure we eventually timeout if there is no activity from
186     # the data transport program.
187     #
188     alarm($Conf{ClientTimeout});
189    
190     mkpath($Dir, 0, 0777) if ( !-d $Dir );
191     if ( !-f "$Dir/LOCK" ) {
192     open(LOCK, ">", "$Dir/LOCK") && close(LOCK);
193     }
194     open(LOG, ">>", "$Dir/LOG");
195     select(LOG); $| = 1; select(STDOUT);
196    
197     #
198     # For the -e option we just expire backups and quit
199     #
200     if ( $opts{e} ) {
201     BackupExpire($client);
202     exit(0);
203     }
204    
205     #
206     # For archive hosts we don't bother any further
207     #
208     if ($Conf{XferMethod} eq "archive" ) {
209     print(STDERR "Exiting because the XferMethod is set to archive\n")
210     if ( $opts{v} );
211     exit(0);
212     }
213    
214     if ( !$opts{d} ) {
215     #
216     # In the non-DHCP case, make sure the host can be looked up
217     # via NS, or otherwise find the IP address via NetBios.
218     #
219     if ( $Conf{ClientNameAlias} ne "" ) {
220     $host = $Conf{ClientNameAlias};
221     } else {
222     $host = $client;
223     }
224     if ( !defined(gethostbyname($host)) ) {
225     #
226     # Ok, NS doesn't know about it. Maybe it is a NetBios name
227     # instead.
228     #
229     print(STDERR "Name server doesn't know about $host; trying NetBios\n")
230     if ( $opts{v} );
231     if ( !defined($hostIP = $bpc->NetBiosHostIPFind($host)) ) {
232     print(LOG $bpc->timeStamp, "Can't find host $host via netbios\n");
233     print("host not found\n");
234     exit(1);
235     }
236     } else {
237     $hostIP = $host;
238     }
239     }
240    
241     ###########################################################################
242     # Figure out what to do and do it
243     ###########################################################################
244    
245     #
246     # See if we should skip this host during a certain range
247     # of times.
248     #
249     my $err = $bpc->ServerConnect($Conf{ServerHost}, $Conf{ServerPort});
250     if ( $err ne "" ) {
251     print("Can't connect to server ($err)\n");
252     print(LOG $bpc->timeStamp, "Can't connect to server ($err)\n");
253     exit(1);
254     }
255     my $reply = $bpc->ServerMesg("status host($clientURI)");
256     $reply = $1 if ( $reply =~ /(.*)/s );
257     my(%StatusHost);
258     eval($reply);
259     $bpc->ServerDisconnect();
260    
261     #
262     # For DHCP tell BackupPC which host this is
263     #
264     if ( $opts{d} ) {
265     if ( $StatusHost{activeJob} ) {
266     # oops, something is already running for this host
267     print(STDERR "Exiting because backup is already running for $client\n")
268     if ( $opts{v} );
269     exit(0);
270     }
271     print("DHCP $hostIP $clientURI\n");
272     }
273    
274     my($needLink, @Backups, $type, $lastBkupNum, $lastFullBkupNum);
275     my $lastFull = 0;
276     my $lastIncr = 0;
277     my $partialIdx = -1;
278     my $partialNum;
279     my $lastPartial = 0;
280    
281     if ( $Conf{FullPeriod} == -1 && !$opts{f} && !$opts{i}
282     || $Conf{FullPeriod} == -2 ) {
283     print(STDERR "Exiting because backups are disabled with"
284     . " \$Conf{FullPeriod} = $Conf{FullPeriod}\n") if ( $opts{v} );
285     #
286     # Tell BackupPC to ignore old failed backups on hosts that
287     # have backups disabled.
288     #
289     print("backups disabled\n")
290     if ( defined($StatusHost{errorTime})
291     && $StatusHost{reason} ne "Reason_backup_done"
292     && time - $StatusHost{errorTime} > 4 * 24 * 3600 );
293     NothingToDo($needLink);
294     }
295    
296     if ( !$opts{i} && !$opts{f} && $Conf{BlackoutGoodCnt} >= 0
297     && $StatusHost{aliveCnt} >= $Conf{BlackoutGoodCnt} ) {
298     my($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
299     my($currHours) = $hour + $min / 60 + $sec / 3600;
300     my $blackout;
301    
302     #
303     # Handle backward compatibility with original separate scalar
304     # parameters.
305     #
306     if ( defined($Conf{BlackoutHourBegin}) ) {
307     push(@{$Conf{BlackoutPeriods}},
308     {
309     hourBegin => $Conf{BlackoutHourBegin},
310     hourEnd => $Conf{BlackoutHourEnd},
311     weekDays => $Conf{BlackoutWeekDays},
312     }
313     );
314     }
315     foreach my $p ( @{$Conf{BlackoutPeriods}} ) {
316     #
317     # Allow blackout to span midnight (specified by BlackoutHourBegin
318     # being greater than BlackoutHourEnd)
319     #
320     next if ( ref($p->{weekDays}) ne "ARRAY"
321     || !defined($p->{hourBegin})
322     || !defined($p->{hourEnd})
323     );
324     if ( $p->{hourBegin} > $p->{hourEnd} ) {
325     $blackout = $p->{hourBegin} <= $currHours
326     || $currHours <= $p->{hourEnd};
327     if ( $currHours <= $p->{hourEnd} ) {
328     #
329     # This is after midnight, so decrement the weekday for the
330     # weekday check (eg: Monday 11pm-1am means Monday 2300 to
331     # Tuesday 0100, not Monday 2300-2400 plus Monday 0000-0100).
332     #
333     $wday--;
334     $wday += 7 if ( $wday < 0 );
335     }
336     } else {
337     $blackout = $p->{hourBegin} <= $currHours
338     && $currHours <= $p->{hourEnd};
339     }
340     if ( $blackout && grep($_ == $wday, @{$p->{weekDays}}) ) {
341     # print(LOG $bpc->timeStamp, "skipping because of blackout"
342     # . " (alive $StatusHost{aliveCnt} times)\n");
343     print(STDERR "Skipping $client because of blackout\n")
344     if ( $opts{v} );
345     NothingToDo($needLink);
346     }
347     }
348     }
349    
350     if ( !$opts{i} && !$opts{f} && $StatusHost{backoffTime} > time ) {
351 dpavlin 316 printf(LOG "%sskipping because of user requested delay (%.1f hours left)\n",
352 dpavlin 1 $bpc->timeStamp, ($StatusHost{backoffTime} - time) / 3600);
353     NothingToDo($needLink);
354     }
355    
356     #
357     # Now see if there are any old backups we should delete
358     #
359     BackupExpire($client);
360    
361     #
362     # Read Backup information, and find times of the most recent full and
363     # incremental backups
364     #
365     @Backups = $bpc->BackupInfoRead($client);
366     for ( my $i = 0 ; $i < @Backups ; $i++ ) {
367     $needLink = 1 if ( $Backups[$i]{nFilesNew} eq ""
368     || -f "$Dir/NewFileList.$Backups[$i]{num}" );
369     $lastBkupNum = $Backups[$i]{num};
370     if ( $Backups[$i]{type} eq "full" ) {
371     if ( $lastFull < $Backups[$i]{startTime} ) {
372     $lastFull = $Backups[$i]{startTime};
373     $lastFullBkupNum = $Backups[$i]{num};
374     }
375     } elsif ( $Backups[$i]{type} eq "incr" ) {
376     $lastIncr = $Backups[$i]{startTime}
377     if ( $lastIncr < $Backups[$i]{startTime} );
378     } elsif ( $Backups[$i]{type} eq "partial" ) {
379     $partialIdx = $i;
380     $lastPartial = $Backups[$i]{startTime};
381     $partialNum = $Backups[$i]{num};
382     }
383     }
384    
385     #
386     # Decide whether we do nothing, or a full or incremental backup.
387     #
388     if ( @Backups == 0
389     || $opts{f}
390     || (!$opts{i} && (time - $lastFull > $Conf{FullPeriod} * 24*3600
391     && time - $lastIncr > $Conf{IncrPeriod} * 24*3600)) ) {
392     $type = "full";
393     } elsif ( $opts{i} || (time - $lastIncr > $Conf{IncrPeriod} * 24*3600
394     && time - $lastFull > $Conf{IncrPeriod} * 24*3600) ) {
395     $type = "incr";
396     } else {
397     NothingToDo($needLink);
398     }
399    
400     #
401     # Check if $host is alive
402     #
403     my $delay = $bpc->CheckHostAlive($hostIP);
404     if ( $delay < 0 ) {
405     print(LOG $bpc->timeStamp, "no ping response\n");
406     print("no ping response\n");
407     print("link $clientURI\n") if ( $needLink );
408     exit(1);
409     } elsif ( $delay > $Conf{PingMaxMsec} ) {
410     printf(LOG "%sping too slow: %.4gmsec\n", $bpc->timeStamp, $delay);
411     printf("ping too slow: %.4gmsec (threshold is %gmsec)\n",
412     $delay, $Conf{PingMaxMsec});
413     print("link $clientURI\n") if ( $needLink );
414     exit(1);
415     }
416    
417     #
418     # Make sure it is really the machine we expect (only for fixed addresses,
419     # since we got the DHCP address above).
420     #
421     if ( !$opts{d} && (my $errMsg = CorrectHostCheck($hostIP, $host)) ) {
422     print(LOG $bpc->timeStamp, "dump failed: $errMsg\n");
423     print("dump failed: $errMsg\n");
424     exit(1);
425     } elsif ( $opts{d} ) {
426     print(LOG $bpc->timeStamp, "$host is dhcp $hostIP, user is $user\n");
427     }
428    
429     #
430     # Get a clean directory $Dir/new
431     #
432     $bpc->RmTreeDefer("$TopDir/trash", "$Dir/new") if ( -d "$Dir/new" );
433    
434     #
435     # Setup file extension for compression and open XferLOG output file
436     #
437 dpavlin 316 if ( $Conf{CompressLevel} && !BackupPC::FileZIO->compOk ) {
438     print(LOG $bpc->timeStamp, "dump failed: can't find Compress::Zlib\n");
439     print("dump failed: can't find Compress::Zlib\n");
440     exit(1);
441     }
442 dpavlin 1 my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : "";
443     my $XferLOG = BackupPC::FileZIO->open("$Dir/XferLOG$fileExt", 1,
444     $Conf{CompressLevel});
445     if ( !defined($XferLOG) ) {
446     print(LOG $bpc->timeStamp, "dump failed: unable to open/create"
447     . " $Dir/XferLOG$fileExt\n");
448     print("dump failed: unable to open/create $Dir/XferLOG$fileExt\n");
449     exit(1);
450     }
451    
452     #
453     # Ignore the partial dump in the case of an incremental
454     # or when the partial is too old. A partial is a partial full.
455     #
456     if ( $type ne "full" || time - $lastPartial > $Conf{PartialAgeMax} * 24*3600 ) {
457     $partialNum = undef;
458     $partialIdx = -1;
459     }
460    
461     #
462     # If this is a partial, copy the old XferLOG file
463     #
464     if ( $partialNum ) {
465     my($compress, $fileName);
466     if ( -f "$Dir/XferLOG.$partialNum.z" ) {
467     $fileName = "$Dir/XferLOG.$partialNum.z";
468     $compress = 1;
469     } elsif ( -f "$Dir/XferLOG.$partialNum" ) {
470     $fileName = "$Dir/XferLOG.$partialNum";
471     $compress = 0;
472     }
473     if ( my $oldLOG = BackupPC::FileZIO->open($fileName, 0, $compress) ) {
474     my $data;
475     while ( $oldLOG->read(\$data, 65536) > 0 ) {
476     $XferLOG->write(\$data);
477     }
478     $oldLOG->close;
479     }
480     }
481    
482     $XferLOG->writeTeeStderr(1) if ( $opts{v} );
483     unlink("$Dir/NewFileList") if ( -f "$Dir/NewFileList" );
484    
485     my $startTime = time();
486     my $tarErrs = 0;
487     my $nFilesExist = 0;
488     my $sizeExist = 0;
489     my $sizeExistComp = 0;
490     my $nFilesTotal = 0;
491     my $sizeTotal = 0;
492     my($logMsg, %stat, $xfer, $ShareNames, $noFilesErr);
493     my $newFilesFH;
494    
495     if ( $Conf{XferMethod} eq "tar" ) {
496     $ShareNames = $Conf{TarShareName};
497     } elsif ( $Conf{XferMethod} eq "rsync" || $Conf{XferMethod} eq "rsyncd" ) {
498     $ShareNames = $Conf{RsyncShareName};
499     } else {
500     $ShareNames = $Conf{SmbShareName};
501     }
502    
503     $ShareNames = [ $ShareNames ] unless ref($ShareNames) eq "ARRAY";
504    
505     #
506     # Run an optional pre-dump command
507     #
508     UserCommandRun("DumpPreUserCmd");
509     $NeedPostCmd = 1;
510    
511     #
512     # Now backup each of the shares
513     #
514     for my $shareName ( @$ShareNames ) {
515     local(*RH, *WH);
516    
517     $stat{xferOK} = $stat{hostAbort} = undef;
518     $stat{hostError} = $stat{lastOutputLine} = undef;
519     if ( -d "$Dir/new/$shareName" ) {
520     print(LOG $bpc->timeStamp,
521     "unexpected repeated share name $shareName skipped\n");
522     next;
523     }
524    
525     if ( $Conf{XferMethod} eq "tar" ) {
526     #
527     # Use tar (eg: tar/ssh) as the transport program.
528     #
529     $xfer = BackupPC::Xfer::Tar->new($bpc);
530     } elsif ( $Conf{XferMethod} eq "rsync" || $Conf{XferMethod} eq "rsyncd" ) {
531     #
532     # Use rsync as the transport program.
533     #
534     if ( !defined($xfer = BackupPC::Xfer::Rsync->new($bpc)) ) {
535     my $errStr = BackupPC::Xfer::Rsync::errStr;
536     print(LOG $bpc->timeStamp, "dump failed: $errStr\n");
537     print("dump failed: $errStr\n");
538     UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
539     exit(1);
540     }
541     } else {
542     #
543     # Default is to use smbclient (smb) as the transport program.
544     #
545     $xfer = BackupPC::Xfer::Smb->new($bpc);
546     }
547    
548     my $useTar = $xfer->useTar;
549    
550     if ( $useTar ) {
551     #
552     # This xfer method outputs a tar format file, so we start a
553     # BackupPC_tarExtract to extract the data.
554     #
555     # Create a socketpair to connect the Xfer method to BackupPC_tarExtract
556     # WH is the write handle for writing, provided to the transport
557     # program, and RH is the other end of the socket for reading,
558     # provided to BackupPC_tarExtract.
559     #
560     if ( socketpair(RH, WH, AF_UNIX, SOCK_STREAM, PF_UNSPEC) ) {
561     shutdown(RH, 1); # no writing to this socket
562     shutdown(WH, 0); # no reading from this socket
563     setsockopt(RH, SOL_SOCKET, SO_RCVBUF, 8 * 65536);
564     setsockopt(WH, SOL_SOCKET, SO_SNDBUF, 8 * 65536);
565     } else {
566     #
567     # Default to pipe() if socketpair() doesn't work.
568     #
569     pipe(RH, WH);
570     }
571    
572     #
573     # fork a child for BackupPC_tarExtract. TAR is a file handle
574     # on which we (the parent) read the stdout & stderr from
575     # BackupPC_tarExtract.
576     #
577     if ( !defined($tarPid = open(TAR, "-|")) ) {
578     print(LOG $bpc->timeStamp, "can't fork to run tar\n");
579     print("can't fork to run tar\n");
580     close(RH);
581     close(WH);
582     last;
583     }
584     binmode(TAR);
585     if ( !$tarPid ) {
586     #
587     # This is the tar child. Close the write end of the pipe,
588     # clone STDERR to STDOUT, clone STDIN from RH, and then
589     # exec BackupPC_tarExtract.
590     #
591     setpgrp 0,0;
592     close(WH);
593     close(STDERR);
594     open(STDERR, ">&STDOUT");
595     close(STDIN);
596     open(STDIN, "<&RH");
597     alarm(0);
598     exec("$BinDir/BackupPC_tarExtract", $client, $shareName,
599     $Conf{CompressLevel});
600     print(LOG $bpc->timeStamp,
601     "can't exec $BinDir/BackupPC_tarExtract\n");
602     exit(0);
603     }
604     } elsif ( !defined($newFilesFH) ) {
605     #
606     # We need to create the NewFileList output file
607     #
608     local(*NEW_FILES);
609     open(NEW_FILES, ">", "$TopDir/pc/$client/NewFileList")
610     || die("can't open $TopDir/pc/$client/NewFileList");
611     $newFilesFH = *NEW_FILES;
612     binmode(NEW_FILES);
613     }
614    
615     #
616     # Run the transport program
617     #
618     $xfer->args({
619     host => $host,
620     client => $client,
621     hostIP => $hostIP,
622     shareName => $shareName,
623     pipeRH => *RH,
624     pipeWH => *WH,
625     XferLOG => $XferLOG,
626     newFilesFH => $newFilesFH,
627     outDir => $Dir,
628     type => $type,
629     lastFull => $lastFull,
630     lastBkupNum => $lastBkupNum,
631     lastFullBkupNum => $lastFullBkupNum,
632     backups => \@Backups,
633     compress => $Conf{CompressLevel},
634     XferMethod => $Conf{XferMethod},
635     logLevel => $Conf{XferLogLevel},
636     pidHandler => \&pidHandler,
637     partialNum => $partialNum,
638     });
639    
640     if ( !defined($logMsg = $xfer->start()) ) {
641     print(LOG $bpc->timeStamp, "xfer start failed: ", $xfer->errStr, "\n");
642     print("dump failed: ", $xfer->errStr, "\n");
643     print("link $clientURI\n") if ( $needLink );
644     #
645     # kill off the tar process, first nicely then forcefully
646     #
647     if ( $tarPid > 0 ) {
648     kill($bpc->sigName2num("INT"), $tarPid);
649     sleep(1);
650     kill($bpc->sigName2num("KILL"), $tarPid);
651     }
652     if ( @xferPid ) {
653     kill($bpc->sigName2num("INT"), @xferPid);
654     sleep(1);
655     kill($bpc->sigName2num("KILL"), @xferPid);
656     }
657     UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
658     exit(1);
659     }
660    
661     @xferPid = $xfer->xferPid;
662    
663     if ( $useTar ) {
664     #
665     # The parent must close both handles on the pipe since the children
666     # are using these handles now.
667     #
668     close(RH);
669     close(WH);
670     }
671     print(LOG $bpc->timeStamp, $logMsg, "\n");
672     print("started $type dump, share=$shareName\n");
673    
674     pidHandler(@xferPid);
675    
676     if ( $useTar ) {
677     #
678     # Parse the output of the transfer program and BackupPC_tarExtract
679     # while they run. Since we might be reading from two or more children
680     # we use a select.
681     #
682     my($FDread, $tarOut, $mesg);
683     vec($FDread, fileno(TAR), 1) = 1 if ( $useTar );
684     $xfer->setSelectMask(\$FDread);
685    
686     SCAN: while ( 1 ) {
687     my $ein = $FDread;
688     last if ( $FDread =~ /^\0*$/ );
689     select(my $rout = $FDread, undef, $ein, undef);
690     if ( $useTar ) {
691     if ( vec($rout, fileno(TAR), 1) ) {
692     if ( sysread(TAR, $mesg, 8192) <= 0 ) {
693     vec($FDread, fileno(TAR), 1) = 0;
694     close(TAR);
695     } else {
696     $tarOut .= $mesg;
697     }
698     }
699     while ( $tarOut =~ /(.*?)[\n\r]+(.*)/s ) {
700     $_ = $1;
701     $tarOut = $2;
702     if ( /^ / ) {
703     $XferLOG->write(\"$_\n");
704     } else {
705     $XferLOG->write(\"tarExtract: $_\n");
706     }
707     if ( /^BackupPC_tarExtact aborting \((.*)\)/ ) {
708     $stat{hostError} = $1;
709     }
710     if ( /^Done: (\d+) errors, (\d+) filesExist, (\d+) sizeExist, (\d+) sizeExistComp, (\d+) filesTotal, (\d+) sizeTotal/ ) {
711     $tarErrs += $1;
712     $nFilesExist += $2;
713     $sizeExist += $3;
714     $sizeExistComp += $4;
715     $nFilesTotal += $5;
716     $sizeTotal += $6;
717     }
718     }
719     }
720     last if ( !$xfer->readOutput(\$FDread, $rout) );
721     while ( my $str = $xfer->logMsgGet ) {
722     print(LOG $bpc->timeStamp, "xfer: $str\n");
723     }
724     if ( $xfer->getStats->{fileCnt} == 1 ) {
725     #
726     # Make sure it is still the machine we expect. We do this while
727     # the transfer is running to avoid a potential race condition if
728     # the ip address was reassigned by dhcp just before we started
729     # the transfer.
730     #
731     if ( my $errMsg = CorrectHostCheck($hostIP, $host) ) {
732     $stat{hostError} = $errMsg if ( $stat{hostError} eq "" );
733     last SCAN;
734     }
735     }
736     }
737     } else {
738     #
739     # otherwise the xfer module does everything for us
740     #
741     my @results = $xfer->run();
742     $tarErrs += $results[0];
743     $nFilesExist += $results[1];
744     $sizeExist += $results[2];
745     $sizeExistComp += $results[3];
746     $nFilesTotal += $results[4];
747     $sizeTotal += $results[5];
748     }
749    
750     #
751     # Merge the xfer status (need to accumulate counts)
752     #
753     my $newStat = $xfer->getStats;
754     if ( $newStat->{fileCnt} == 0 ) {
755     $noFilesErr ||= "No files dumped for share $shareName";
756     }
757     foreach my $k ( (keys(%stat), keys(%$newStat)) ) {
758     next if ( !defined($newStat->{$k}) );
759     if ( $k =~ /Cnt$/ ) {
760     $stat{$k} += $newStat->{$k};
761     delete($newStat->{$k});
762     next;
763     }
764     if ( !defined($stat{$k}) ) {
765     $stat{$k} = $newStat->{$k};
766     delete($newStat->{$k});
767     next;
768     }
769     }
770     $stat{xferOK} = 0 if ( $stat{hostError} || $stat{hostAbort} );
771     if ( !$stat{xferOK} ) {
772     #
773     # kill off the tranfer program, first nicely then forcefully
774     #
775     if ( @xferPid ) {
776     kill($bpc->sigName2num("INT"), @xferPid);
777     sleep(1);
778     kill($bpc->sigName2num("KILL"), @xferPid);
779     }
780     #
781     # kill off the tar process, first nicely then forcefully
782     #
783     if ( $tarPid > 0 ) {
784     kill($bpc->sigName2num("INT"), $tarPid);
785     sleep(1);
786     kill($bpc->sigName2num("KILL"), $tarPid);
787     }
788     #
789     # don't do any more shares on this host
790     #
791     last;
792     }
793     }
794    
795     #
796     # If this is a full, and any share had zero files then consider the dump bad
797     #
798     if ( $type eq "full" && $stat{hostError} eq ""
799     && length($noFilesErr) && $Conf{BackupZeroFilesIsFatal} ) {
800     $stat{hostError} = $noFilesErr;
801     $stat{xferOK} = 0;
802     }
803    
804     $stat{xferOK} = 0 if ( $Abort );
805    
806     #
807     # Do one last check to make sure it is still the machine we expect.
808     #
809     if ( $stat{xferOK} && (my $errMsg = CorrectHostCheck($hostIP, $host)) ) {
810     $stat{hostError} = $errMsg;
811     $stat{xferOK} = 0;
812     }
813    
814     UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
815     close($newFilesFH) if ( defined($newFilesFH) );
816    
817     my $endTime = time();
818    
819     #
820     # If the dump failed, clean up
821     #
822     if ( !$stat{xferOK} ) {
823     $stat{hostError} = $stat{lastOutputLine} if ( $stat{hostError} eq "" );
824     if ( $stat{hostError} ) {
825     print(LOG $bpc->timeStamp,
826     "Got fatal error during xfer ($stat{hostError})\n");
827     $XferLOG->write(\"Got fatal error during xfer ($stat{hostError})\n");
828     }
829     if ( !$Abort ) {
830     #
831     # wait a short while and see if the system is still alive
832     #
833     sleep(5);
834     if ( $bpc->CheckHostAlive($hostIP) < 0 ) {
835     $stat{hostAbort} = 1;
836     }
837     if ( $stat{hostAbort} ) {
838     $stat{hostError} = "lost network connection during backup";
839     }
840     print(LOG $bpc->timeStamp, "Backup aborted ($stat{hostError})\n");
841     $XferLOG->write(\"Backup aborted ($stat{hostError})\n");
842     } else {
843     $XferLOG->write(\"Backup aborted by user signal\n");
844     }
845    
846     #
847     # Close the log file and call BackupFailCleanup, which exits.
848     #
849     BackupFailCleanup();
850     }
851    
852     my $newNum = BackupSave();
853    
854     my $otherCount = $stat{xferErrCnt} - $stat{xferBadFileCnt}
855     - $stat{xferBadShareCnt};
856     print(LOG $bpc->timeStamp,
857     "$type backup $newNum complete, $stat{fileCnt} files,"
858     . " $stat{byteCnt} bytes,"
859     . " $stat{xferErrCnt} xferErrs ($stat{xferBadFileCnt} bad files,"
860     . " $stat{xferBadShareCnt} bad shares, $otherCount other)\n");
861    
862     BackupExpire($client);
863    
864     print("$type backup complete\n");
865    
866     ###########################################################################
867     # Subroutines
868     ###########################################################################
869    
870     sub NothingToDo
871     {
872     my($needLink) = @_;
873    
874     print("nothing to do\n");
875     print("link $clientURI\n") if ( $needLink );
876     exit(0);
877     }
878    
879     sub catch_signal
880     {
881     my $sigName = shift;
882    
883     #
884     # The first time we receive a signal we try to gracefully
885     # abort the backup. This allows us to keep a partial dump
886     # with the in-progress file deleted and attribute caches
887     # flushed to disk etc.
888     #
889     if ( !length($SigName) ) {
890     my $reason;
891     if ( $sigName eq "INT" ) {
892     $reason = "aborted by user (signal=$sigName)";
893     } else {
894     $reason = "aborted by signal=$sigName";
895     }
896     if ( $Pid == $$ ) {
897     #
898     # Parent logs a message
899     #
900     print(LOG $bpc->timeStamp,
901     "Aborting backup up after signal $sigName\n");
902    
903     #
904     # Tell xfer to abort
905     #
906     $xfer->abort($reason);
907    
908     #
909     # Send ALRMs to BackupPC_tarExtract if we are using it
910     #
911     if ( $tarPid > 0 ) {
912     kill($bpc->sigName2num("ARLM"), $tarPid);
913     }
914    
915     #
916     # Schedule a 20 second timer in case the clean
917     # abort doesn't complete
918     #
919     alarm(20);
920     } else {
921     #
922     # Children ignore anything other than ALRM and INT
923     #
924     if ( $sigName ne "ALRM" && $sigName ne "INT" ) {
925     return;
926     }
927    
928     #
929     # The child also tells xfer to abort
930     #
931     $xfer->abort($reason);
932    
933     #
934     # Schedule a 15 second timer in case the clean
935     # abort doesn't complete
936     #
937     alarm(15);
938     }
939     $SigName = $sigName;
940     $Abort = 1;
941     return;
942     }
943    
944     #
945     # This is a second signal: time to clean up.
946     #
947     if ( $Pid != $$ && ($sigName eq "ALRM" || $sigName eq "INT") ) {
948     #
949     # Children quit quietly on ALRM or INT
950     #
951     exit(1)
952     }
953    
954     #
955     # Ignore other signals in children
956     #
957     return if ( $Pid != $$ );
958    
959     $SIG{$sigName} = 'IGNORE';
960     UserCommandRun("DumpPostUserCmd") if ( $NeedPostCmd );
961     $XferLOG->write(\"exiting after signal $sigName\n");
962     if ( @xferPid ) {
963     kill($bpc->sigName2num("INT"), @xferPid);
964     sleep(1);
965     kill($bpc->sigName2num("KILL"), @xferPid);
966     }
967     if ( $tarPid > 0 ) {
968     kill($bpc->sigName2num("INT"), $tarPid);
969     sleep(1);
970     kill($bpc->sigName2num("KILL"), $tarPid);
971     }
972     if ( $sigName eq "INT" ) {
973     $stat{hostError} = "aborted by user (signal=$sigName)";
974     } else {
975     $stat{hostError} = "received signal=$sigName";
976     }
977     BackupFailCleanup();
978     }
979    
980     sub CheckForNewFiles
981     {
982     if ( -f _ && $File::Find::name !~ /\/fattrib$/ ) {
983     $nFilesTotal++;
984     } elsif ( -d _ ) {
985     #
986     # No need to check entire tree
987     #
988     $File::Find::prune = 1 if ( $nFilesTotal );
989     }
990     }
991    
992     sub BackupFailCleanup
993     {
994     my $fileExt = $Conf{CompressLevel} > 0 ? ".z" : "";
995     my $keepPartial = 0;
996    
997     #
998     # We keep this backup if it is a full and we actually backed
999     # up some files.
1000     #
1001     if ( $type eq "full" ) {
1002     if ( $nFilesTotal == 0 && $xfer->getStats->{fileCnt} == 0 ) {
1003     #
1004     # Xfer didn't report any files, but check in the new
1005     # directory just in case.
1006     #
1007     find(\&CheckForNewFiles, "$Dir/new");
1008     $keepPartial = 1 if ( $nFilesTotal );
1009     } else {
1010     #
1011     # Xfer reported some files
1012     #
1013     $keepPartial = 1;
1014     }
1015     }
1016    
1017     #
1018     # Don't keep partials if they are disabled
1019     #
1020     $keepPartial = 0 if ( $Conf{PartialAgeMax} < 0 );
1021    
1022     if ( !$keepPartial ) {
1023     #
1024     # No point in saving this dump; get rid of eveything.
1025     #
1026     $XferLOG->close();
1027     unlink("$Dir/timeStamp.level0") if ( -f "$Dir/timeStamp.level0" );
1028     unlink("$Dir/SmbLOG.bad") if ( -f "$Dir/SmbLOG.bad" );
1029     unlink("$Dir/SmbLOG.bad$fileExt") if ( -f "$Dir/SmbLOG.bad$fileExt" );
1030     unlink("$Dir/XferLOG.bad") if ( -f "$Dir/XferLOG.bad" );
1031     unlink("$Dir/XferLOG.bad$fileExt") if ( -f "$Dir/XferLOG.bad$fileExt" );
1032     unlink("$Dir/NewFileList") if ( -f "$Dir/NewFileList" );
1033     rename("$Dir/XferLOG$fileExt", "$Dir/XferLOG.bad$fileExt");
1034     $bpc->RmTreeDefer("$TopDir/trash", "$Dir/new") if ( -d "$Dir/new" );
1035     print("dump failed: $stat{hostError}\n");
1036     $XferLOG->close();
1037     print("link $clientURI\n") if ( $needLink );
1038     exit(1);
1039     }
1040     #
1041     # Ok, now we should save this as a partial dump
1042     #
1043     $type = "partial";
1044     my $newNum = BackupSave();
1045     print("dump failed: $stat{hostError}\n");
1046     print("link $clientURI\n") if ( $needLink );
1047     print(LOG $bpc->timeStamp, "Saved partial dump $newNum\n");
1048     exit(2);
1049     }
1050    
1051     #
1052     # Decide which old backups should be expired by moving them
1053     # to $TopDir/trash.
1054     #
1055     sub BackupExpire
1056     {
1057     my($client) = @_;
1058     my($Dir) = "$TopDir/pc/$client";
1059     my(@Backups) = $bpc->BackupInfoRead($client);
1060     my($cntFull, $cntIncr, $firstFull, $firstIncr, $oldestIncr, $oldestFull);
1061    
1062     if ( $Conf{FullKeepCnt} <= 0 ) {
1063     print(LOG $bpc->timeStamp,
1064     "Invalid value for \$Conf{FullKeepCnt}=$Conf{FullKeepCnt}\n");
1065     print(STDERR
1066     "Invalid value for \$Conf{FullKeepCnt}=$Conf{FullKeepCnt}\n")
1067     if ( $opts{v} );
1068     return;
1069     }
1070     while ( 1 ) {
1071     $cntFull = $cntIncr = 0;
1072     $oldestIncr = $oldestFull = 0;
1073     for ( my $i = 0 ; $i < @Backups ; $i++ ) {
1074     if ( $Backups[$i]{type} eq "full" ) {
1075     $firstFull = $i if ( $cntFull == 0 );
1076     $cntFull++;
1077     } else {
1078     $firstIncr = $i if ( $cntIncr == 0 );
1079     $cntIncr++;
1080     }
1081     }
1082     $oldestIncr = (time - $Backups[$firstIncr]{startTime}) / (24 * 3600)
1083     if ( $cntIncr > 0 );
1084     $oldestFull = (time - $Backups[$firstFull]{startTime}) / (24 * 3600)
1085     if ( $cntFull > 0 );
1086     if ( $cntIncr > $Conf{IncrKeepCnt}
1087     || ($cntIncr > $Conf{IncrKeepCntMin}
1088     && $oldestIncr > $Conf{IncrAgeMax})
1089     && (@Backups <= $firstIncr + 1
1090     || $Backups[$firstIncr]{noFill}
1091     || !$Backups[$firstIncr + 1]{noFill}) ) {
1092     #
1093     # Only delete an incr backup if the Conf settings are satisfied.
1094     # We also must make sure that either this backup is the most
1095     # recent one, or it is not filled, or the next backup is filled.
1096     # (We can't deleted a filled incr if the next backup is not
1097     # filled.)
1098     #
1099     print(LOG $bpc->timeStamp,
1100     "removing incr backup $Backups[$firstIncr]{num}\n");
1101     BackupRemove($client, \@Backups, $firstIncr);
1102     next;
1103     }
1104    
1105     #
1106     # Delete any old full backups, according to $Conf{FullKeepCntMin}
1107     # and $Conf{FullAgeMax}.
1108     #
1109     # First make sure that $Conf{FullAgeMax} is at least bigger
1110     # than $Conf{FullPeriod} * $Conf{FullKeepCnt}, including
1111     # the exponential array case.
1112     #
1113     my $fullKeepCnt = $Conf{FullKeepCnt};
1114     $fullKeepCnt = [$fullKeepCnt] if ( ref($fullKeepCnt) ne "ARRAY" );
1115     my $fullAgeMax;
1116     my $fullPeriod = int(0.5 + $Conf{FullPeriod});
1117 dpavlin 316 $fullPeriod = 7 if ( $fullPeriod <= 0 );
1118 dpavlin 1 for ( my $i = 0 ; $i < @$fullKeepCnt ; $i++ ) {
1119     $fullAgeMax += $fullKeepCnt->[$i] * $fullPeriod;
1120     $fullPeriod *= 2;
1121     }
1122     $fullAgeMax += $fullPeriod; # add some buffer
1123    
1124     if ( $cntFull > $Conf{FullKeepCntMin}
1125     && $oldestFull > $Conf{FullAgeMax}
1126     && $oldestFull > $fullAgeMax
1127     && $Conf{FullKeepCntMin} > 0
1128     && $Conf{FullAgeMax} > 0
1129     && (@Backups <= $firstFull + 1
1130     || !$Backups[$firstFull + 1]{noFill}) ) {
1131     #
1132     # Only delete a full backup if the Conf settings are satisfied.
1133     # We also must make sure that either this backup is the most
1134     # recent one, or the next backup is filled.
1135     # (We can't deleted a full backup if the next backup is not
1136     # filled.)
1137     #
1138     print(LOG $bpc->timeStamp,
1139     "removing old full backup $Backups[$firstFull]{num}\n");
1140     BackupRemove($client, \@Backups, $firstFull);
1141     next;
1142     }
1143    
1144     #
1145     # Do new-style full backup expiry, which includes the the case
1146     # where $Conf{FullKeepCnt} is an array.
1147     #
1148     last if ( !BackupFullExpire($client, \@Backups) );
1149     }
1150     $bpc->BackupInfoWrite($client, @Backups);
1151     }
1152    
1153     #
1154     # Handle full backup expiry, using exponential periods.
1155     #
1156     sub BackupFullExpire
1157     {
1158     my($client, $Backups) = @_;
1159     my $fullCnt = 0;
1160     my $fullPeriod = $Conf{FullPeriod};
1161     my $origFullPeriod = $fullPeriod;
1162     my $fullKeepCnt = $Conf{FullKeepCnt};
1163     my $fullKeepIdx = 0;
1164     my(@delete, @fullList);
1165    
1166     #
1167     # Don't delete anything if $Conf{FullPeriod} or $Conf{FullKeepCnt} are
1168     # not defined - possibly a corrupted config.pl file.
1169     #
1170     return if ( !defined($Conf{FullPeriod}) || !defined($Conf{FullKeepCnt}) );
1171    
1172     #
1173     # If regular backups are still disabled with $Conf{FullPeriod} < 0,
1174     # we still expire backups based on a typical FullPeriod value - weekly.
1175     #
1176     $fullPeriod = 7 if ( $fullPeriod <= 0 );
1177    
1178     $fullKeepCnt = [$fullKeepCnt] if ( ref($fullKeepCnt) ne "ARRAY" );
1179    
1180     for ( my $i = 0 ; $i < @$Backups ; $i++ ) {
1181     next if ( $Backups->[$i]{type} ne "full" );
1182     push(@fullList, $i);
1183     }
1184     for ( my $k = @fullList - 1 ; $k >= 0 ; $k-- ) {
1185     my $i = $fullList[$k];
1186     my $prevFull = $fullList[$k-1] if ( $k > 0 );
1187     #
1188     # Don't delete any full that is followed by an unfilled backup,
1189     # since it is needed for restore.
1190     #
1191     my $noDelete = $i + 1 < @$Backups ? $Backups->[$i+1]{noFill} : 0;
1192    
1193     if ( !$noDelete &&
1194     ($fullKeepIdx >= @$fullKeepCnt
1195     || $k > 0
1196     && $fullKeepIdx > 0
1197     && $Backups->[$i]{startTime} - $Backups->[$prevFull]{startTime}
1198     < ($fullPeriod - $origFullPeriod / 2) * 24 * 3600
1199     )
1200     ) {
1201     #
1202     # Delete the full backup
1203     #
1204 dpavlin 316 #print("Deleting backup $i ($prevFull)\n");
1205     unshift(@delete, $i);
1206 dpavlin 1 } else {
1207     $fullCnt++;
1208     while ( $fullKeepIdx < @$fullKeepCnt
1209     && $fullCnt >= $fullKeepCnt->[$fullKeepIdx] ) {
1210     $fullKeepIdx++;
1211     $fullCnt = 0;
1212     $fullPeriod = 2 * $fullPeriod;
1213     }
1214     }
1215     }
1216     #
1217     # Now actually delete the backups
1218     #
1219     for ( my $i = @delete - 1 ; $i >= 0 ; $i-- ) {
1220     print(LOG $bpc->timeStamp,
1221     "removing full backup $Backups->[$delete[$i]]{num}\n");
1222     BackupRemove($client, $Backups, $delete[$i]);
1223     }
1224     return @delete;
1225     }
1226    
1227     #
1228     # Removes any partial backups
1229     #
1230     sub BackupPartialRemove
1231     {
1232     my($client, $Backups) = @_;
1233    
1234     for ( my $i = @$Backups - 1 ; $i >= 0 ; $i-- ) {
1235     next if ( $Backups->[$i]{type} ne "partial" );
1236     BackupRemove($client, $Backups, $i);
1237     }
1238     }
1239    
1240     sub BackupSave
1241     {
1242     my @Backups = $bpc->BackupInfoRead($client);
1243     my $num = -1;
1244    
1245     #
1246     # Since we got a good backup we should remove any partial dumps
1247     # (the new backup might also be a partial, but that's ok).
1248     #
1249     BackupPartialRemove($client, \@Backups);
1250    
1251     #
1252     # Number the new backup
1253     #
1254     for ( my $i = 0 ; $i < @Backups ; $i++ ) {
1255     $num = $Backups[$i]{num} if ( $num < $Backups[$i]{num} );
1256     }
1257     $num++;
1258     $bpc->RmTreeDefer("$TopDir/trash", "$Dir/$num") if ( -d "$Dir/$num" );
1259     if ( !rename("$Dir/new", "$Dir/$num") ) {
1260     print(LOG $bpc->timeStamp, "Rename $Dir/new -> $Dir/$num failed\n");
1261     $stat{xferOK} = 0;
1262     }
1263     $needLink = 1 if ( -f "$Dir/NewFileList" );
1264    
1265     #
1266     # Add the new backup information to the backup file
1267     #
1268     my $i = @Backups;
1269     $Backups[$i]{num} = $num;
1270     $Backups[$i]{type} = $type;
1271     $Backups[$i]{startTime} = $startTime;
1272     $Backups[$i]{endTime} = $endTime;
1273     $Backups[$i]{size} = $sizeTotal;
1274     $Backups[$i]{nFiles} = $nFilesTotal;
1275     $Backups[$i]{xferErrs} = $stat{xferErrCnt} || 0;
1276     $Backups[$i]{xferBadFile} = $stat{xferBadFileCnt} || 0;
1277     $Backups[$i]{xferBadShare} = $stat{xferBadShareCnt} || 0;
1278     $Backups[$i]{nFilesExist} = $nFilesExist;
1279     $Backups[$i]{sizeExist} = $sizeExist;
1280     $Backups[$i]{sizeExistComp} = $sizeExistComp;
1281     $Backups[$i]{tarErrs} = $tarErrs;
1282     $Backups[$i]{compress} = $Conf{CompressLevel};
1283     $Backups[$i]{noFill} = $type eq "incr" ? 1 : 0;
1284     $Backups[$i]{level} = $type eq "incr" ? 1 : 0;
1285     $Backups[$i]{mangle} = 1; # name mangling always on for v1.04+
1286     $bpc->BackupInfoWrite($client, @Backups);
1287    
1288     unlink("$Dir/timeStamp.level0") if ( -f "$Dir/timeStamp.level0" );
1289     foreach my $ext ( qw(bad bad.z) ) {
1290     next if ( !-f "$Dir/XferLOG.$ext" );
1291     unlink("$Dir/XferLOG.$ext.old") if ( -f "$Dir/XferLOG.$ext" );
1292     rename("$Dir/XferLOG.$ext", "$Dir/XferLOG.$ext.old");
1293     }
1294    
1295     #
1296     # Now remove the bad files, replacing them if possible with links to
1297     # earlier backups.
1298     #
1299     foreach my $f ( $xfer->getBadFiles ) {
1300     my $j;
1301     my $shareM = $bpc->fileNameEltMangle($f->{share});
1302     my $fileM = $bpc->fileNameMangle($f->{file});
1303     unlink("$Dir/$num/$shareM/$fileM");
1304     for ( $j = $i - 1 ; $j >= 0 ; $j-- ) {
1305     my $file;
1306     if ( $Backups[$j]{mangle} ) {
1307     $file = "$shareM/$fileM";
1308     } else {
1309     $file = "$f->{share}/$f->{file}";
1310     }
1311     next if ( !-f "$Dir/$Backups[$j]{num}/$file" );
1312     if ( !link("$Dir/$Backups[$j]{num}/$file",
1313     "$Dir/$num/$shareM/$fileM") ) {
1314     my $str = \"Unable to link $num/$f->{share}/$f->{file} to"
1315     . " $Backups[$j]{num}/$f->{share}/$f->{file}\n";
1316     $XferLOG->write(\$str);
1317     } else {
1318     my $str = "Bad file $num/$f->{share}/$f->{file} replaced"
1319     . " by link to"
1320     . " $Backups[$j]{num}/$f->{share}/$f->{file}\n";
1321     $XferLOG->write(\$str);
1322     }
1323     last;
1324     }
1325     if ( $j < 0 ) {
1326     my $str = "Removed bad file $num/$f->{share}/$f->{file}"
1327     . " (no older copy to link to)\n";
1328     $XferLOG->write(\$str);
1329     }
1330     }
1331     $XferLOG->close();
1332     rename("$Dir/XferLOG$fileExt", "$Dir/XferLOG.$num$fileExt");
1333     rename("$Dir/NewFileList", "$Dir/NewFileList.$num");
1334    
1335     return $num;
1336     }
1337    
1338     #
1339     # Removes a specific backup
1340     #
1341     sub BackupRemove
1342     {
1343     my($client, $Backups, $idx) = @_;
1344     my($Dir) = "$TopDir/pc/$client";
1345    
1346 dpavlin 316 if ( $Backups->[$idx]{num} eq "" ) {
1347     print("BackupRemove: ignoring empty backup number for idx $idx\n");
1348     return;
1349     }
1350    
1351 dpavlin 1 $bpc->RmTreeDefer("$TopDir/trash",
1352     "$Dir/$Backups->[$idx]{num}");
1353     unlink("$Dir/SmbLOG.$Backups->[$idx]{num}")
1354     if ( -f "$Dir/SmbLOG.$Backups->[$idx]{num}" );
1355     unlink("$Dir/SmbLOG.$Backups->[$idx]{num}.z")
1356     if ( -f "$Dir/SmbLOG.$Backups->[$idx]{num}.z" );
1357     unlink("$Dir/XferLOG.$Backups->[$idx]{num}")
1358     if ( -f "$Dir/XferLOG.$Backups->[$idx]{num}" );
1359     unlink("$Dir/XferLOG.$Backups->[$idx]{num}.z")
1360     if ( -f "$Dir/XferLOG.$Backups->[$idx]{num}.z" );
1361     splice(@{$Backups}, $idx, 1);
1362     }
1363    
1364     sub CorrectHostCheck
1365     {
1366     my($hostIP, $host) = @_;
1367     return if ( $hostIP eq $host && !$Conf{FixedIPNetBiosNameCheck}
1368     || $Conf{NmbLookupCmd} eq "" );
1369     my($netBiosHost, $netBiosUser) = $bpc->NetBiosInfoGet($hostIP);
1370     return "host $host has mismatching netbios name $netBiosHost"
1371     if ( $netBiosHost ne $host );
1372     return;
1373     }
1374    
1375     #
1376     # The Xfer method might tell us from time to time about processes
1377     # it forks. We tell BackupPC about this (for status displays) and
1378     # keep track of the pids in case we cancel the backup
1379     #
1380     sub pidHandler
1381     {
1382     @xferPid = @_;
1383     @xferPid = grep(/./, @xferPid);
1384     return if ( !@xferPid && $tarPid < 0 );
1385     my @pids = @xferPid;
1386     push(@pids, $tarPid) if ( $tarPid > 0 );
1387     my $str = join(",", @pids);
1388     $XferLOG->write(\"Xfer PIDs are now $str\n") if ( defined($XferLOG) );
1389     print("xferPids $str\n");
1390     }
1391    
1392     #
1393     # Run an optional pre- or post-dump command
1394     #
1395     sub UserCommandRun
1396     {
1397     my($cmdType) = @_;
1398    
1399     return if ( !defined($Conf{$cmdType}) );
1400     my $vars = {
1401     xfer => $xfer,
1402     client => $client,
1403     host => $host,
1404     hostIP => $hostIP,
1405     user => $Hosts->{$client}{user},
1406     moreUsers => $Hosts->{$client}{moreUsers},
1407     share => $ShareNames->[0],
1408     shares => $ShareNames,
1409     XferMethod => $Conf{XferMethod},
1410     sshPath => $Conf{SshPath},
1411     LOG => *LOG,
1412     XferLOG => $XferLOG,
1413     stat => \%stat,
1414     xferOK => $stat{xferOK} || 0,
1415     hostError => $stat{hostError},
1416     type => $type,
1417     cmdType => $cmdType,
1418     };
1419     my $cmd = $bpc->cmdVarSubstitute($Conf{$cmdType}, $vars);
1420     $XferLOG->write(\"Executing $cmdType: @$cmd\n");
1421     #
1422     # Run the user's command, dumping the stdout/stderr into the
1423     # Xfer log file. Also supply the optional $vars and %Conf in
1424     # case the command is really perl code instead of a shell
1425     # command.
1426     #
1427     $bpc->cmdSystemOrEval($cmd,
1428     sub {
1429     $XferLOG->write(\$_[0]);
1430     },
1431     $vars, \%Conf);
1432     }

Properties

Name Value
svn:executable

  ViewVC Help
Powered by ViewVC 1.1.26