| 1 |
#!/usr/bin/perl -w |
| 2 |
#============================================================= -*-perl-*- |
| 3 |
# |
| 4 |
# BackupPC_tarIncCreate: create a tar archive of an existing incremental dump |
| 5 |
# |
| 6 |
# |
| 7 |
# DESCRIPTION |
| 8 |
# |
| 9 |
# Usage: BackupPC_tarIncCreate [options] |
| 10 |
# |
| 11 |
# Flags: |
| 12 |
# Required options: |
| 13 |
# |
| 14 |
# -h host Host from which the tar archive is created. |
| 15 |
# -n dumpNum Dump number from which the tar archive is created. |
| 16 |
# A negative number means relative to the end (eg -1 |
| 17 |
# means the most recent dump, -2 2nd most recent etc). |
| 18 |
# -s shareName Share name from which the tar archive is created. |
| 19 |
# |
| 20 |
# Other options: |
| 21 |
# -t print summary totals |
| 22 |
# -r pathRemove path prefix that will be replaced with pathAdd |
| 23 |
# -p pathAdd new path prefix |
| 24 |
# -b BLOCKS BLOCKS x 512 bytes per record (default 20; same as tar) |
| 25 |
# -w writeBufSz write buffer size (default 1MB) |
| 26 |
# |
| 27 |
# The -h, -n and -s options specify which dump is used to generate |
| 28 |
# the tar archive. The -r and -p options can be used to relocate |
| 29 |
# the paths in the tar archive so extracted files can be placed |
| 30 |
# in a location different from their original location. |
| 31 |
# |
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# AUTHOR |
| 33 |
# Craig Barratt <cbarratt@users.sourceforge.net> |
| 34 |
# Ivan Klaric <iklaric@gmail.com> |
| 35 |
# Dobrica Pavlinusic <dpavlin@rot13.org> |
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# |
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# COPYRIGHT |
| 38 |
# Copyright (C) 2001-2003 Craig Barratt |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
| 42 |
# the Free Software Foundation; either version 2 of the License, or |
| 43 |
# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
| 46 |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 47 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 48 |
# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
| 51 |
# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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#======================================================================== |
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# |
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# Version 2.1.0, released 20 Jun 2004. |
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# |
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# See http://backuppc.sourceforge.net. |
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# |
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#======================================================================== |
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|
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use strict; |
| 63 |
no utf8; |
| 64 |
use lib "__INSTALLDIR__/lib"; |
| 65 |
use File::Path; |
| 66 |
use Getopt::Std; |
| 67 |
use DBI; |
| 68 |
use BackupPC::Lib; |
| 69 |
use BackupPC::Attrib qw(:all); |
| 70 |
use BackupPC::FileZIO; |
| 71 |
use BackupPC::View; |
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use BackupPC::SearchLib; |
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use Time::HiRes qw/time/; |
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use POSIX qw/strftime/; |
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use File::Which; |
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use File::Slurp; |
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use Data::Dumper; ### FIXME |
| 78 |
|
| 79 |
die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) ); |
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my $TopDir = $bpc->TopDir(); |
| 81 |
my $BinDir = $bpc->BinDir(); |
| 82 |
my %Conf = $bpc->Conf(); |
| 83 |
%BackupPC::SearchLib::Conf = %Conf; |
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my %opts; |
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my $in_backup_increment; |
| 86 |
|
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|
| 88 |
if ( !getopts("th:n:p:r:s:b:w:vdf", \%opts) ) { |
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print STDERR <<EOF; |
| 90 |
usage: $0 [options] |
| 91 |
Required options: |
| 92 |
-h host host from which the tar archive is created |
| 93 |
-n dumpNum dump number from which the tar archive is created |
| 94 |
A negative number means relative to the end (eg -1 |
| 95 |
means the most recent dump, -2 2nd most recent etc). |
| 96 |
-s shareName share name from which the tar archive is created |
| 97 |
|
| 98 |
Other options: |
| 99 |
-t print summary totals |
| 100 |
-r pathRemove path prefix that will be replaced with pathAdd |
| 101 |
-p pathAdd new path prefix |
| 102 |
-b BLOCKS BLOCKS x 512 bytes per record (default 20; same as tar) |
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-w writeBufSz write buffer size (default 1048576 = 1MB) |
| 104 |
-f overwrite existing parts |
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-v verbose output |
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-d debug output |
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EOF |
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exit(1); |
| 109 |
} |
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|
| 111 |
if ( $opts{h} !~ /^([\w\.\s-]+)$/ ) { |
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die "$0: bad host name '$opts{h}'\n"; |
| 113 |
} |
| 114 |
my $Host = $opts{h}; |
| 115 |
|
| 116 |
if ( $opts{n} !~ /^(-?\d+)$/ ) { |
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die "$0: bad dump number '$opts{n}'\n"; |
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} |
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my $Num = $opts{n}; |
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|
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my $bin; |
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foreach my $c (qw/gzip md5sum tee/) { |
| 123 |
$bin->{$c} = which($c) || die "$0 needs $c, install it\n"; |
| 124 |
} |
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|
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my @Backups = $bpc->BackupInfoRead($Host); |
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my $FileCnt = 0; |
| 128 |
my $ByteCnt = 0; |
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my $DirCnt = 0; |
| 130 |
my $SpecialCnt = 0; |
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my $ErrorCnt = 0; |
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my $current_tar_size = 0; |
| 133 |
my $total_increment_size = 0; |
| 134 |
|
| 135 |
my $i; |
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$Num = $Backups[@Backups + $Num]{num} if ( -@Backups <= $Num && $Num < 0 ); |
| 137 |
for ( $i = 0 ; $i < @Backups ; $i++ ) { |
| 138 |
last if ( $Backups[$i]{num} == $Num ); |
| 139 |
} |
| 140 |
if ( $i >= @Backups ) { |
| 141 |
die "$0: bad backup number $Num for host $Host\n"; |
| 142 |
} |
| 143 |
|
| 144 |
my $PathRemove = $1 if ( $opts{r} =~ /(.+)/ ); |
| 145 |
my $PathAdd = $1 if ( $opts{p} =~ /(.+)/ ); |
| 146 |
if ( $opts{s} !~ /^([\w\s\.\/\$-]+)$/ && $opts{s} ne "*" ) { |
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die "$0: bad share name '$opts{s}'\n"; |
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} |
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our $ShareName = $opts{s}; |
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our $view = BackupPC::View->new($bpc, $Host, \@Backups); |
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|
| 152 |
# database |
| 153 |
|
| 154 |
my $dsn = $Conf{SearchDSN}; |
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my $db_user = $Conf{SearchUser} || ''; |
| 156 |
|
| 157 |
my $dbh = DBI->connect($dsn, $db_user, "", { RaiseError => 1, AutoCommit => 0} ); |
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|
| 159 |
my $sth_inc_size = $dbh->prepare(qq{ |
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update backups set |
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inc_size = ?, |
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inc_deleted = false |
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where id = ? |
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}); |
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my $sth_backup_parts = $dbh->prepare(qq{ |
| 166 |
insert into backup_parts ( |
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backup_id, |
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part_nr, |
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tar_size, |
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size, |
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md5, |
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items |
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) values (?,?,?,?,?,?) |
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}); |
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|
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# |
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# This constant and the line of code below that uses it are borrowed |
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# from Archive::Tar. Thanks to Calle Dybedahl and Stephen Zander. |
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# See www.cpan.org. |
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# |
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# Archive::Tar is Copyright 1997 Calle Dybedahl. All rights reserved. |
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# Copyright 1998 Stephen Zander. All rights reserved. |
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# |
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my $tar_pack_header |
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= 'a100 a8 a8 a8 a12 a12 A8 a1 a100 a6 a2 a32 a32 a8 a8 a155 x12'; |
| 186 |
my $tar_header_length = 512; |
| 187 |
|
| 188 |
my $BufSize = $opts{w} || 1048576; # 1MB or 2^20 |
| 189 |
my $WriteBuf = ""; |
| 190 |
my $WriteBufSz = ($opts{b} || 20) * $tar_header_length; |
| 191 |
|
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my(%UidCache, %GidCache); |
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my(%HardLinkExtraFiles, @HardLinks); |
| 194 |
|
| 195 |
# |
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# Write out all the requested files/directories |
| 197 |
# |
| 198 |
|
| 199 |
my $max_file_size = $Conf{'MaxArchiveFileSize'} || die "problem with MaxArchiveFileSize parametar"; |
| 200 |
|
| 201 |
my $tar_dir = $Conf{InstallDir}.'/'.$Conf{GzipTempDir}; |
| 202 |
die "problem with $tar_dir, check GzipTempDir in configuration\n" unless (-d $tar_dir && -w $tar_dir); |
| 203 |
|
| 204 |
my $tar_file = BackupPC::SearchLib::getGzipName($Host, $ShareName, $Num) || die "can't getGzipName($Host, $ShareName, $Num)"; |
| 205 |
|
| 206 |
my $tar_path_final = $tar_dir . '/' . $tar_file; |
| 207 |
my $tar_path = $tar_path_final . '.tmp'; |
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|
| 209 |
$tar_path =~ s#//#/#g; |
| 210 |
|
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my $sth = $dbh->prepare(qq{ |
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SELECT |
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backups.id |
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FROM backups |
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JOIN shares on shares.id = shareid |
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JOIN hosts on hosts.id = shares.hostid |
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WHERE hosts.name = ? and shares.name = ? and backups.num = ? |
| 218 |
}); |
| 219 |
$sth->execute($Host, $ShareName, $Num); |
| 220 |
my ($backup_id) = $sth->fetchrow_array; |
| 221 |
$sth->finish; |
| 222 |
|
| 223 |
|
| 224 |
# delete exising backup_parts |
| 225 |
my $sth_delete_backup_parts = $dbh->prepare(qq{ |
| 226 |
delete from backup_parts |
| 227 |
where backup_id = ? |
| 228 |
}); |
| 229 |
$sth_delete_backup_parts->execute($backup_id); |
| 230 |
|
| 231 |
|
| 232 |
print STDERR "backup_id: $backup_id working dir: $tar_dir, max uncompressed size $max_file_size bytes, tar $tar_file\n" if ($opts{d}); |
| 233 |
|
| 234 |
if (-e $tar_path_final) { |
| 235 |
if ($opts{f}) { |
| 236 |
rmtree $tar_path_final || die "can't remove $tar_path_final: $!"; |
| 237 |
} else { |
| 238 |
die "$tar_path_final allready exists\n"; |
| 239 |
} |
| 240 |
} |
| 241 |
|
| 242 |
my $fh; |
| 243 |
my $part = 0; |
| 244 |
my $no_files = 0; |
| 245 |
my $items_in_part = 0; |
| 246 |
|
| 247 |
sub new_tar_part { |
| 248 |
my $arg = {@_}; |
| 249 |
|
| 250 |
if ($fh) { |
| 251 |
return if ($current_tar_size == 0); |
| 252 |
|
| 253 |
print STDERR "\n\t+ $part:"; |
| 254 |
|
| 255 |
# |
| 256 |
# Finish with two null 512 byte headers, |
| 257 |
# and then round out a full block. |
| 258 |
# |
| 259 |
my $data = "\0" x ($tar_header_length * 2); |
| 260 |
TarWrite($fh, \$data); |
| 261 |
TarWrite($fh, undef); |
| 262 |
|
| 263 |
close($fh) || die "can't close archive part $part: $!"; |
| 264 |
|
| 265 |
my $file = $tar_path . '/' . $part; |
| 266 |
|
| 267 |
my $md5 = read_file( $file . '.md5' ) || die "can't read md5sum file ${file}.md5"; |
| 268 |
$md5 =~ s/\s.*$//; |
| 269 |
|
| 270 |
my $size = (stat( $file . '.tar.gz' ))[7] || die "can't stat ${file}.tar.gz"; |
| 271 |
|
| 272 |
print "$file, $size bytes, $items_in_part items"; |
| 273 |
|
| 274 |
$sth_backup_parts->execute( |
| 275 |
$backup_id, |
| 276 |
$part, |
| 277 |
$current_tar_size, |
| 278 |
$size, |
| 279 |
$md5, |
| 280 |
$items_in_part, |
| 281 |
); |
| 282 |
|
| 283 |
$total_increment_size += $size; |
| 284 |
|
| 285 |
if ($arg->{close}) { |
| 286 |
|
| 287 |
sub move($$) { |
| 288 |
my ($from,$to) = @_; |
| 289 |
print STDERR "# rename $from -> $to\n" if ($opts{d}); |
| 290 |
rename $from, $to || die "can't move $from -> $to: $!\n"; |
| 291 |
} |
| 292 |
|
| 293 |
if ($part == 1) { |
| 294 |
print STDERR " single" if ($opts{v}); |
| 295 |
move("${tar_path}/1.tar.gz", "${tar_path_final}.tar.gz"); |
| 296 |
move("${tar_path}/1.md5", "${tar_path_final}.md5"); |
| 297 |
rmtree $tar_path or die "can't remove temporary dir $tar_path: $!"; |
| 298 |
} else { |
| 299 |
print STDERR " [last]" if ($opts{v}); |
| 300 |
move("${tar_path}", "${tar_path_final}"); |
| 301 |
|
| 302 |
# if this archive was single part, remove it |
| 303 |
foreach my $suffix (qw/.tar.gz .md5/) { |
| 304 |
my $path = $tar_path_final . $suffix; |
| 305 |
unlink $path if (-e $path); |
| 306 |
} |
| 307 |
} |
| 308 |
|
| 309 |
$sth_inc_size->execute( |
| 310 |
$total_increment_size, |
| 311 |
$backup_id |
| 312 |
); |
| 313 |
|
| 314 |
print "\n\ttotal $total_increment_size bytes"; |
| 315 |
|
| 316 |
return; |
| 317 |
} |
| 318 |
|
| 319 |
} |
| 320 |
|
| 321 |
$part++; |
| 322 |
|
| 323 |
# if this is first part, create directory |
| 324 |
|
| 325 |
if ($part == 1) { |
| 326 |
if (-e $tar_path) { |
| 327 |
print STDERR "# deleting existing $tar_path\n" if ($opts{d}); |
| 328 |
rmtree($tar_path); |
| 329 |
} |
| 330 |
mkdir($tar_path) || die "can't create directory $tar_path: $!"; |
| 331 |
|
| 332 |
sub abort_cleanup { |
| 333 |
print STDERR "ABORTED: cleanup temp dir "; |
| 334 |
rmtree($tar_path); |
| 335 |
$dbh->rollback; |
| 336 |
exit 1; |
| 337 |
} |
| 338 |
|
| 339 |
$SIG{'INT'} = \&abort_cleanup; |
| 340 |
$SIG{'QUIT'} = \&abort_cleanup; |
| 341 |
$SIG{'__DIE__'} = \&abort_cleanup; |
| 342 |
|
| 343 |
} |
| 344 |
|
| 345 |
my $file = $tar_path . '/' . $part; |
| 346 |
|
| 347 |
# |
| 348 |
# create comprex pipe which will pass output through gzip |
| 349 |
# for compression, create file on disk using tee |
| 350 |
# and pipe same output to md5sum to create checksum |
| 351 |
# |
| 352 |
|
| 353 |
my $cmd = '| ' . $bin->{'gzip'} . ' ' . $Conf{GzipLevel} . ' ' . |
| 354 |
'| ' . $bin->{'tee'} . ' ' . $file . '.tar.gz' . ' ' . |
| 355 |
'| ' . $bin->{'md5sum'} . ' - > ' . $file . '.md5'; |
| 356 |
|
| 357 |
print STDERR "## $cmd\n" if ($opts{d}); |
| 358 |
|
| 359 |
open($fh, $cmd) or die "can't open $cmd: $!"; |
| 360 |
binmode($fh); |
| 361 |
|
| 362 |
$current_tar_size = 0; |
| 363 |
$items_in_part = 0; |
| 364 |
} |
| 365 |
|
| 366 |
new_tar_part(); |
| 367 |
|
| 368 |
if (seedCache($Host, $ShareName, $Num)) { |
| 369 |
archiveWrite($fh, '/'); |
| 370 |
archiveWriteHardLinks($fh); |
| 371 |
new_tar_part( close => 1 ); |
| 372 |
} else { |
| 373 |
print STDERR "NOTE: no files found for $Host:$ShareName, increment $Num\n" if ($opts{v}); |
| 374 |
# remove temporary files if there are no files |
| 375 |
rmtree($tar_path); |
| 376 |
|
| 377 |
my $sth = $dbh->prepare(qq{ |
| 378 |
update backups set inc_size = 0, inc_deleted = true |
| 379 |
where id = ? |
| 380 |
}); |
| 381 |
$sth->execute($backup_id); |
| 382 |
|
| 383 |
} |
| 384 |
|
| 385 |
# |
| 386 |
# print out totals if requested |
| 387 |
# |
| 388 |
if ( $opts{t} ) { |
| 389 |
print STDERR "Done: $FileCnt files, $ByteCnt bytes, $DirCnt dirs,", |
| 390 |
" $SpecialCnt specials, $ErrorCnt errors\n"; |
| 391 |
} |
| 392 |
if ( $ErrorCnt && !$FileCnt && !$DirCnt ) { |
| 393 |
# |
| 394 |
# Got errors, with no files or directories; exit with non-zero |
| 395 |
# status |
| 396 |
# |
| 397 |
die "got errors or no files\n"; |
| 398 |
} |
| 399 |
|
| 400 |
$sth_inc_size->finish; |
| 401 |
$sth_backup_parts->finish; |
| 402 |
|
| 403 |
$dbh->commit || die "can't commit changes to database"; |
| 404 |
$dbh->disconnect(); |
| 405 |
|
| 406 |
exit; |
| 407 |
|
| 408 |
########################################################################### |
| 409 |
# Subroutines |
| 410 |
########################################################################### |
| 411 |
|
| 412 |
sub archiveWrite |
| 413 |
{ |
| 414 |
my($fh, $dir, $tarPathOverride) = @_; |
| 415 |
|
| 416 |
if ( $dir =~ m{(^|/)\.\.(/|$)} ) { |
| 417 |
print(STDERR "$0: bad directory '$dir'\n"); |
| 418 |
$ErrorCnt++; |
| 419 |
return; |
| 420 |
} |
| 421 |
$dir = "/" if ( $dir eq "." ); |
| 422 |
#print(STDERR "calling find with $Num, $ShareName, $dir\n"); |
| 423 |
|
| 424 |
if ( $view->find($Num, $ShareName, $dir, 0, \&TarWriteFile, |
| 425 |
$fh, $tarPathOverride) < 0 ) { |
| 426 |
print(STDERR "$0: bad share or directory '$ShareName/$dir'\n"); |
| 427 |
$ErrorCnt++; |
| 428 |
return; |
| 429 |
} |
| 430 |
} |
| 431 |
|
| 432 |
# |
| 433 |
# Write out any hardlinks (if any) |
| 434 |
# |
| 435 |
sub archiveWriteHardLinks |
| 436 |
{ |
| 437 |
my $fh = @_; |
| 438 |
foreach my $hdr ( @HardLinks ) { |
| 439 |
$hdr->{size} = 0; |
| 440 |
if ( defined($PathRemove) |
| 441 |
&& substr($hdr->{linkname}, 0, length($PathRemove)+1) |
| 442 |
eq ".$PathRemove" ) { |
| 443 |
substr($hdr->{linkname}, 0, length($PathRemove)+1) = ".$PathAdd"; |
| 444 |
} |
| 445 |
TarWriteFileInfo($fh, $hdr); |
| 446 |
} |
| 447 |
@HardLinks = (); |
| 448 |
%HardLinkExtraFiles = (); |
| 449 |
} |
| 450 |
|
| 451 |
sub UidLookup |
| 452 |
{ |
| 453 |
my($uid) = @_; |
| 454 |
|
| 455 |
$UidCache{$uid} = (getpwuid($uid))[0] if ( !exists($UidCache{$uid}) ); |
| 456 |
return $UidCache{$uid}; |
| 457 |
} |
| 458 |
|
| 459 |
sub GidLookup |
| 460 |
{ |
| 461 |
my($gid) = @_; |
| 462 |
|
| 463 |
$GidCache{$gid} = (getgrgid($gid))[0] if ( !exists($GidCache{$gid}) ); |
| 464 |
return $GidCache{$gid}; |
| 465 |
} |
| 466 |
|
| 467 |
sub TarWrite |
| 468 |
{ |
| 469 |
my($fh, $dataRef) = @_; |
| 470 |
|
| 471 |
|
| 472 |
if ( !defined($dataRef) ) { |
| 473 |
# |
| 474 |
# do flush by padding to a full $WriteBufSz |
| 475 |
# |
| 476 |
my $data = "\0" x ($WriteBufSz - length($WriteBuf)); |
| 477 |
$dataRef = \$data; |
| 478 |
} |
| 479 |
|
| 480 |
# poor man's tell :-) |
| 481 |
$current_tar_size += length($$dataRef); |
| 482 |
|
| 483 |
if ( length($WriteBuf) + length($$dataRef) < $WriteBufSz ) { |
| 484 |
# |
| 485 |
# just buffer and return |
| 486 |
# |
| 487 |
$WriteBuf .= $$dataRef; |
| 488 |
return; |
| 489 |
} |
| 490 |
my $done = $WriteBufSz - length($WriteBuf); |
| 491 |
if ( syswrite($fh, $WriteBuf . substr($$dataRef, 0, $done)) |
| 492 |
!= $WriteBufSz ) { |
| 493 |
die "Unable to write to output file ($!)\n"; |
| 494 |
} |
| 495 |
while ( $done + $WriteBufSz <= length($$dataRef) ) { |
| 496 |
if ( syswrite($fh, substr($$dataRef, $done, $WriteBufSz)) |
| 497 |
!= $WriteBufSz ) { |
| 498 |
die "Unable to write to output file ($!)\n"; |
| 499 |
} |
| 500 |
$done += $WriteBufSz; |
| 501 |
} |
| 502 |
$WriteBuf = substr($$dataRef, $done); |
| 503 |
} |
| 504 |
|
| 505 |
sub TarWritePad |
| 506 |
{ |
| 507 |
my($fh, $size) = @_; |
| 508 |
|
| 509 |
if ( $size % $tar_header_length ) { |
| 510 |
my $data = "\0" x ($tar_header_length - ($size % $tar_header_length)); |
| 511 |
TarWrite($fh, \$data); |
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
sub TarWriteHeader |
| 516 |
{ |
| 517 |
my($fh, $hdr) = @_; |
| 518 |
|
| 519 |
$hdr->{uname} = UidLookup($hdr->{uid}) if ( !defined($hdr->{uname}) ); |
| 520 |
$hdr->{gname} = GidLookup($hdr->{gid}) if ( !defined($hdr->{gname}) ); |
| 521 |
my $devmajor = defined($hdr->{devmajor}) ? sprintf("%07o", $hdr->{devmajor}) |
| 522 |
: ""; |
| 523 |
my $devminor = defined($hdr->{devminor}) ? sprintf("%07o", $hdr->{devminor}) |
| 524 |
: ""; |
| 525 |
my $sizeStr; |
| 526 |
if ( $hdr->{size} >= 2 * 65536 * 65536 ) { |
| 527 |
# |
| 528 |
# GNU extension for files >= 8GB: send size in big-endian binary |
| 529 |
# |
| 530 |
$sizeStr = pack("c4 N N", 0x80, 0, 0, 0, |
| 531 |
$hdr->{size} / (65536 * 65536), |
| 532 |
$hdr->{size} % (65536 * 65536)); |
| 533 |
} elsif ( $hdr->{size} >= 1 * 65536 * 65536 ) { |
| 534 |
# |
| 535 |
# sprintf octal only handles up to 2^32 - 1 |
| 536 |
# |
| 537 |
$sizeStr = sprintf("%03o", $hdr->{size} / (1 << 24)) |
| 538 |
. sprintf("%08o", $hdr->{size} % (1 << 24)); |
| 539 |
} else { |
| 540 |
$sizeStr = sprintf("%011o", $hdr->{size}); |
| 541 |
} |
| 542 |
my $data = pack($tar_pack_header, |
| 543 |
substr($hdr->{name}, 0, 99), |
| 544 |
sprintf("%07o", $hdr->{mode}), |
| 545 |
sprintf("%07o", $hdr->{uid}), |
| 546 |
sprintf("%07o", $hdr->{gid}), |
| 547 |
$sizeStr, |
| 548 |
sprintf("%011o", $hdr->{mtime}), |
| 549 |
"", #checksum field - space padded by pack("A8") |
| 550 |
$hdr->{type}, |
| 551 |
substr($hdr->{linkname}, 0, 99), |
| 552 |
$hdr->{magic} || 'ustar ', |
| 553 |
$hdr->{version} || ' ', |
| 554 |
$hdr->{uname}, |
| 555 |
$hdr->{gname}, |
| 556 |
$devmajor, |
| 557 |
$devminor, |
| 558 |
"" # prefix is empty |
| 559 |
); |
| 560 |
substr($data, 148, 7) = sprintf("%06o\0", unpack("%16C*",$data)); |
| 561 |
TarWrite($fh, \$data); |
| 562 |
} |
| 563 |
|
| 564 |
sub TarWriteFileInfo |
| 565 |
{ |
| 566 |
my($fh, $hdr) = @_; |
| 567 |
|
| 568 |
# |
| 569 |
# Handle long link names (symbolic links) |
| 570 |
# |
| 571 |
if ( length($hdr->{linkname}) > 99 ) { |
| 572 |
my %h; |
| 573 |
my $data = $hdr->{linkname} . "\0"; |
| 574 |
$h{name} = "././\@LongLink"; |
| 575 |
$h{type} = "K"; |
| 576 |
$h{size} = length($data); |
| 577 |
TarWriteHeader($fh, \%h); |
| 578 |
TarWrite($fh, \$data); |
| 579 |
TarWritePad($fh, length($data)); |
| 580 |
} |
| 581 |
# |
| 582 |
# Handle long file names |
| 583 |
# |
| 584 |
if ( length($hdr->{name}) > 99 ) { |
| 585 |
my %h; |
| 586 |
my $data = $hdr->{name} . "\0"; |
| 587 |
$h{name} = "././\@LongLink"; |
| 588 |
$h{type} = "L"; |
| 589 |
$h{size} = length($data); |
| 590 |
TarWriteHeader($fh, \%h); |
| 591 |
TarWrite($fh, \$data); |
| 592 |
TarWritePad($fh, length($data)); |
| 593 |
} |
| 594 |
TarWriteHeader($fh, $hdr); |
| 595 |
} |
| 596 |
|
| 597 |
# |
| 598 |
# seed cache of files in this increment |
| 599 |
# |
| 600 |
sub seedCache($$$) { |
| 601 |
my ($host, $share, $dumpNo) = @_; |
| 602 |
|
| 603 |
print STDERR curr_time(), "$host:$share #$dumpNo" if ($opts{v}); |
| 604 |
my $sql = q{ |
| 605 |
SELECT path,size |
| 606 |
FROM files |
| 607 |
JOIN shares on shares.id = shareid |
| 608 |
JOIN hosts on hosts.id = shares.hostid |
| 609 |
WHERE hosts.name = ? and shares.name = ? and backupnum = ? |
| 610 |
}; |
| 611 |
|
| 612 |
my $sth = $dbh->prepare($sql); |
| 613 |
$sth->execute($host, $share, $dumpNo); |
| 614 |
my $count = $sth->rows; |
| 615 |
print STDERR " $count items, parts:" if ($opts{v}); |
| 616 |
while (my $row = $sth->fetchrow_arrayref) { |
| 617 |
#print STDERR "+ ", $row->[0],"\n"; |
| 618 |
$in_backup_increment->{ $row->[0] } = $row->[1]; |
| 619 |
} |
| 620 |
|
| 621 |
$sth->finish(); |
| 622 |
|
| 623 |
return $count; |
| 624 |
} |
| 625 |
|
| 626 |
# |
| 627 |
# calculate overhad for one file in tar |
| 628 |
# |
| 629 |
sub tar_overhead($) { |
| 630 |
my $name = shift || ''; |
| 631 |
|
| 632 |
# header, padding of file and two null blocks at end |
| 633 |
my $len = 4 * $tar_header_length; |
| 634 |
|
| 635 |
# if filename is longer than 99 chars subtract blocks for |
| 636 |
# long filename |
| 637 |
if ( length($name) > 99 ) { |
| 638 |
$len += int( ( length($name) + $tar_header_length ) / $tar_header_length ) * $tar_header_length; |
| 639 |
} |
| 640 |
|
| 641 |
return $len; |
| 642 |
} |
| 643 |
|
| 644 |
my $Attr; |
| 645 |
my $AttrDir; |
| 646 |
|
| 647 |
sub TarWriteFile |
| 648 |
{ |
| 649 |
my($hdr, $fh, $tarPathOverride) = @_; |
| 650 |
|
| 651 |
my $tarPath = $hdr->{relPath}; |
| 652 |
$tarPath = $tarPathOverride if ( defined($tarPathOverride) ); |
| 653 |
|
| 654 |
$tarPath =~ s{//+}{/}g; |
| 655 |
|
| 656 |
#print STDERR "? $tarPath\n" if ($opts{d}); |
| 657 |
my $size = $in_backup_increment->{$tarPath}; |
| 658 |
return unless (defined($size)); |
| 659 |
|
| 660 |
# is this file too large to fit into MaxArchiveFileSize? |
| 661 |
|
| 662 |
if ( ($current_tar_size + tar_overhead($tarPath) + $size) > $max_file_size ) { |
| 663 |
print STDERR "# tar file $current_tar_size + $tar_header_length + $size > $max_file_size, splitting\n" if ($opts{d}); |
| 664 |
new_tar_part(); |
| 665 |
} |
| 666 |
|
| 667 |
#print STDERR "A $tarPath [$size] tell: $current_tar_size\n" if ($opts{d}); |
| 668 |
$items_in_part++; |
| 669 |
|
| 670 |
if ( defined($PathRemove) |
| 671 |
&& substr($tarPath, 0, length($PathRemove)) eq $PathRemove ) { |
| 672 |
substr($tarPath, 0, length($PathRemove)) = $PathAdd; |
| 673 |
} |
| 674 |
$tarPath = "./" . $tarPath if ( $tarPath !~ /^\.\// ); |
| 675 |
$tarPath =~ s{//+}{/}g; |
| 676 |
$hdr->{name} = $tarPath; |
| 677 |
|
| 678 |
if ( $hdr->{type} == BPC_FTYPE_DIR ) { |
| 679 |
# |
| 680 |
# Directory: just write the header |
| 681 |
# |
| 682 |
$hdr->{name} .= "/" if ( $hdr->{name} !~ m{/$} ); |
| 683 |
TarWriteFileInfo($fh, $hdr); |
| 684 |
$DirCnt++; |
| 685 |
} elsif ( $hdr->{type} == BPC_FTYPE_FILE ) { |
| 686 |
# |
| 687 |
# Regular file: write the header and file |
| 688 |
# |
| 689 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, $hdr->{compress}); |
| 690 |
if ( !defined($f) ) { |
| 691 |
print(STDERR "Unable to open file $hdr->{fullPath}\n"); |
| 692 |
$ErrorCnt++; |
| 693 |
return; |
| 694 |
} |
| 695 |
# do we need to split file? |
| 696 |
if ($hdr->{size} < $max_file_size) { |
| 697 |
TarWriteFileInfo($fh, $hdr); |
| 698 |
my($data, $size); |
| 699 |
while ( $f->read(\$data, $BufSize) > 0 ) { |
| 700 |
TarWrite($fh, \$data); |
| 701 |
$size += length($data); |
| 702 |
} |
| 703 |
$f->close; |
| 704 |
TarWritePad($fh, $size); |
| 705 |
$FileCnt++; |
| 706 |
$ByteCnt += $size; |
| 707 |
} else { |
| 708 |
my $full_size = $hdr->{size}; |
| 709 |
my $orig_name = $hdr->{name}; |
| 710 |
my $max_part_size = $max_file_size - tar_overhead($hdr->{name}); |
| 711 |
|
| 712 |
my $parts = int(($full_size + $max_part_size - 1) / $max_part_size); |
| 713 |
print STDERR "# splitting $orig_name [$full_size bytes] into $parts parts\n" if ($opts{d}); |
| 714 |
foreach my $subpart ( 1 .. $parts ) { |
| 715 |
new_tar_part(); |
| 716 |
if ($subpart < $parts) { |
| 717 |
$hdr->{size} = $max_part_size; |
| 718 |
} else { |
| 719 |
$hdr->{size} = $full_size % $max_part_size; |
| 720 |
} |
| 721 |
$hdr->{name} = $orig_name . '/' . $subpart; |
| 722 |
print STDERR "## creating part $subpart ",$hdr->{name}, " [", $hdr->{size}," bytes]\n"; |
| 723 |
|
| 724 |
TarWriteFileInfo($fh, $hdr); |
| 725 |
my($data, $size); |
| 726 |
if (0) { |
| 727 |
for ( 1 .. int($hdr->{size} / $BufSize) ) { |
| 728 |
my $r_size = $f->read(\$data, $BufSize); |
| 729 |
die "expected $BufSize bytes read, got $r_size bytes!" if ($r_size != $BufSize); |
| 730 |
TarWrite($fh, \$data); |
| 731 |
$size += length($data); |
| 732 |
} |
| 733 |
} |
| 734 |
my $size_left = $hdr->{size} % $BufSize; |
| 735 |
my $r_size = $f->read(\$data, $size_left); |
| 736 |
die "expected $size_left bytes last read, got $r_size bytes!" if ($r_size != $size_left); |
| 737 |
|
| 738 |
TarWrite($fh, \$data); |
| 739 |
$size += length($data); |
| 740 |
TarWritePad($fh, $size); |
| 741 |
|
| 742 |
$items_in_part++; |
| 743 |
} |
| 744 |
$f->close; |
| 745 |
$FileCnt++; |
| 746 |
$ByteCnt += $full_size; |
| 747 |
new_tar_part(); |
| 748 |
} |
| 749 |
} elsif ( $hdr->{type} == BPC_FTYPE_HARDLINK ) { |
| 750 |
# |
| 751 |
# Hardlink file: either write a hardlink or the complete file |
| 752 |
# depending upon whether the linked-to file will be written |
| 753 |
# to the archive. |
| 754 |
# |
| 755 |
# Start by reading the contents of the link. |
| 756 |
# |
| 757 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, $hdr->{compress}); |
| 758 |
if ( !defined($f) ) { |
| 759 |
print(STDERR "Unable to open file $hdr->{fullPath}\n"); |
| 760 |
$ErrorCnt++; |
| 761 |
return; |
| 762 |
} |
| 763 |
my $data; |
| 764 |
while ( $f->read(\$data, $BufSize) > 0 ) { |
| 765 |
$hdr->{linkname} .= $data; |
| 766 |
} |
| 767 |
$f->close; |
| 768 |
my $done = 0; |
| 769 |
my $name = $hdr->{linkname}; |
| 770 |
$name =~ s{^\./}{/}; |
| 771 |
if ( $HardLinkExtraFiles{$name} ) { |
| 772 |
# |
| 773 |
# Target file will be or was written, so just remember |
| 774 |
# the hardlink so we can dump it later. |
| 775 |
# |
| 776 |
push(@HardLinks, $hdr); |
| 777 |
$SpecialCnt++; |
| 778 |
} else { |
| 779 |
# |
| 780 |
# Have to dump the original file. Just call the top-level |
| 781 |
# routine, so that we save the hassle of dealing with |
| 782 |
# mangling, merging and attributes. |
| 783 |
# |
| 784 |
$HardLinkExtraFiles{$hdr->{linkname}} = 1; |
| 785 |
archiveWrite($fh, $hdr->{linkname}, $hdr->{name}); |
| 786 |
} |
| 787 |
} elsif ( $hdr->{type} == BPC_FTYPE_SYMLINK ) { |
| 788 |
# |
| 789 |
# Symbolic link: read the symbolic link contents into the header |
| 790 |
# and write the header. |
| 791 |
# |
| 792 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, $hdr->{compress}); |
| 793 |
if ( !defined($f) ) { |
| 794 |
print(STDERR "Unable to open symlink file $hdr->{fullPath}\n"); |
| 795 |
$ErrorCnt++; |
| 796 |
return; |
| 797 |
} |
| 798 |
my $data; |
| 799 |
while ( $f->read(\$data, $BufSize) > 0 ) { |
| 800 |
$hdr->{linkname} .= $data; |
| 801 |
} |
| 802 |
$f->close; |
| 803 |
$hdr->{size} = 0; |
| 804 |
TarWriteFileInfo($fh, $hdr); |
| 805 |
$SpecialCnt++; |
| 806 |
} elsif ( $hdr->{type} == BPC_FTYPE_CHARDEV |
| 807 |
|| $hdr->{type} == BPC_FTYPE_BLOCKDEV |
| 808 |
|| $hdr->{type} == BPC_FTYPE_FIFO ) { |
| 809 |
# |
| 810 |
# Special files: for char and block special we read the |
| 811 |
# major and minor numbers from a plain file. |
| 812 |
# |
| 813 |
if ( $hdr->{type} != BPC_FTYPE_FIFO ) { |
| 814 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, |
| 815 |
$hdr->{compress}); |
| 816 |
my $data; |
| 817 |
if ( !defined($f) || $f->read(\$data, $BufSize) < 0 ) { |
| 818 |
print(STDERR "Unable to open/read char/block special file" |
| 819 |
. " $hdr->{fullPath}\n"); |
| 820 |
$f->close if ( defined($f) ); |
| 821 |
$ErrorCnt++; |
| 822 |
return; |
| 823 |
} |
| 824 |
$f->close; |
| 825 |
if ( $data =~ /(\d+),(\d+)/ ) { |
| 826 |
$hdr->{devmajor} = $1; |
| 827 |
$hdr->{devminor} = $2; |
| 828 |
} |
| 829 |
} |
| 830 |
$hdr->{size} = 0; |
| 831 |
TarWriteFileInfo($fh, $hdr); |
| 832 |
$SpecialCnt++; |
| 833 |
} else { |
| 834 |
print(STDERR "Got unknown type $hdr->{type} for $hdr->{name}\n"); |
| 835 |
$ErrorCnt++; |
| 836 |
} |
| 837 |
} |
| 838 |
|
| 839 |
my $t_fmt = '%Y-%m-%d %H:%M:%S'; |
| 840 |
sub curr_time { |
| 841 |
return strftime($t_fmt,localtime()); |
| 842 |
} |
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