| 1 |
#!/usr/bin/perl |
| 2 |
#============================================================= -*-perl-*- |
| 3 |
# |
| 4 |
# BackupPC_tarCreate: create a tar archive of an existing dump |
| 5 |
# for restore on a client. |
| 6 |
# |
| 7 |
# DESCRIPTION |
| 8 |
# |
| 9 |
# Usage: BackupPC_tarCreate [options] files/directories... |
| 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 |
# |
| 32 |
# AUTHOR |
| 33 |
# Craig Barratt <cbarratt@users.sourceforge.net> |
| 34 |
# |
| 35 |
# COPYRIGHT |
| 36 |
# Copyright (C) 2001-2003 Craig Barratt |
| 37 |
# |
| 38 |
# This program is free software; you can redistribute it and/or modify |
| 39 |
# it under the terms of the GNU General Public License as published by |
| 40 |
# the Free Software Foundation; either version 2 of the License, or |
| 41 |
# (at your option) any later version. |
| 42 |
# |
| 43 |
# This program is distributed in the hope that it will be useful, |
| 44 |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 45 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 46 |
# GNU General Public License for more details. |
| 47 |
# |
| 48 |
# You should have received a copy of the GNU General Public License |
| 49 |
# along with this program; if not, write to the Free Software |
| 50 |
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 51 |
# |
| 52 |
#======================================================================== |
| 53 |
# |
| 54 |
# Version 2.1.0, released 20 Jun 2004. |
| 55 |
# |
| 56 |
# See http://backuppc.sourceforge.net. |
| 57 |
# |
| 58 |
#======================================================================== |
| 59 |
|
| 60 |
use strict; |
| 61 |
no utf8; |
| 62 |
use lib "__INSTALLDIR__/lib"; |
| 63 |
use File::Path; |
| 64 |
use Getopt::Std; |
| 65 |
use DBI; |
| 66 |
use BackupPC::Lib; |
| 67 |
use BackupPC::Attrib qw(:all); |
| 68 |
use BackupPC::FileZIO; |
| 69 |
use BackupPC::View; |
| 70 |
use BackupPC::SearchLib; |
| 71 |
use Data::Dumper; |
| 72 |
|
| 73 |
die("BackupPC::Lib->new failed\n") if ( !(my $bpc = BackupPC::Lib->new) ); |
| 74 |
my $TopDir = $bpc->TopDir(); |
| 75 |
my $BinDir = $bpc->BinDir(); |
| 76 |
my %Conf = $bpc->Conf(); |
| 77 |
my @DBCache; |
| 78 |
my $db_done = 0; |
| 79 |
my %opts; |
| 80 |
|
| 81 |
if ( !getopts("th:n:p:r:s:b:w:", \%opts) || @ARGV < 1 ) { |
| 82 |
print STDERR <<EOF; |
| 83 |
usage: $0 [options] files/directories... |
| 84 |
Required options: |
| 85 |
-h host host from which the tar archive is created |
| 86 |
-n dumpNum dump number from which the tar archive is created |
| 87 |
A negative number means relative to the end (eg -1 |
| 88 |
means the most recent dump, -2 2nd most recent etc). |
| 89 |
-s shareName share name from which the tar archive is created |
| 90 |
|
| 91 |
Other options: |
| 92 |
-t print summary totals |
| 93 |
-r pathRemove path prefix that will be replaced with pathAdd |
| 94 |
-p pathAdd new path prefix |
| 95 |
-b BLOCKS BLOCKS x 512 bytes per record (default 20; same as tar) |
| 96 |
-w writeBufSz write buffer size (default 1048576 = 1MB) |
| 97 |
EOF |
| 98 |
exit(1); |
| 99 |
} |
| 100 |
|
| 101 |
if ( $opts{h} !~ /^([\w\.\s-]+)$/ ) { |
| 102 |
print(STDERR "$0: bad host name '$opts{h}'\n"); |
| 103 |
exit(1); |
| 104 |
} |
| 105 |
my $Host = $opts{h}; |
| 106 |
|
| 107 |
if ( $opts{n} !~ /^(-?\d+)$/ ) { |
| 108 |
print(STDERR "$0: bad dump number '$opts{n}'\n"); |
| 109 |
exit(1); |
| 110 |
} |
| 111 |
my $Num = $opts{n}; |
| 112 |
|
| 113 |
my @Backups = $bpc->BackupInfoRead($Host); |
| 114 |
my $FileCnt = 0; |
| 115 |
my $ByteCnt = 0; |
| 116 |
my $DirCnt = 0; |
| 117 |
my $SpecialCnt = 0; |
| 118 |
my $ErrorCnt = 0; |
| 119 |
|
| 120 |
my $i; |
| 121 |
$Num = $Backups[@Backups + $Num]{num} if ( -@Backups <= $Num && $Num < 0 ); |
| 122 |
for ( $i = 0 ; $i < @Backups ; $i++ ) { |
| 123 |
last if ( $Backups[$i]{num} == $Num ); |
| 124 |
} |
| 125 |
if ( $i >= @Backups ) { |
| 126 |
print(STDERR "$0: bad backup number $Num for host $Host\n"); |
| 127 |
exit(1); |
| 128 |
} |
| 129 |
|
| 130 |
my $PathRemove = $1 if ( $opts{r} =~ /(.+)/ ); |
| 131 |
my $PathAdd = $1 if ( $opts{p} =~ /(.+)/ ); |
| 132 |
if ( $opts{s} !~ /^([\w\s\.\/\$-]+)$/ && $opts{s} ne "*" ) { |
| 133 |
print(STDERR "$0: bad share name '$opts{s}'\n"); |
| 134 |
exit(1); |
| 135 |
} |
| 136 |
our $ShareName = $opts{s}; |
| 137 |
our $view = BackupPC::View->new($bpc, $Host, \@Backups); |
| 138 |
|
| 139 |
# |
| 140 |
# This constant and the line of code below that uses it are borrowed |
| 141 |
# from Archive::Tar. Thanks to Calle Dybedahl and Stephen Zander. |
| 142 |
# See www.cpan.org. |
| 143 |
# |
| 144 |
# Archive::Tar is Copyright 1997 Calle Dybedahl. All rights reserved. |
| 145 |
# Copyright 1998 Stephen Zander. All rights reserved. |
| 146 |
# |
| 147 |
my $tar_pack_header |
| 148 |
= 'a100 a8 a8 a8 a12 a12 A8 a1 a100 a6 a2 a32 a32 a8 a8 a155 x12'; |
| 149 |
my $tar_header_length = 512; |
| 150 |
|
| 151 |
my $BufSize = $opts{w} || 1048576; # 1MB or 2^20 |
| 152 |
my $WriteBuf = ""; |
| 153 |
my $WriteBufSz = ($opts{b} || 20) * $tar_header_length; |
| 154 |
|
| 155 |
my(%UidCache, %GidCache); |
| 156 |
my(%HardLinkExtraFiles, @HardLinks); |
| 157 |
|
| 158 |
# |
| 159 |
# Write out all the requested files/directories |
| 160 |
# |
| 161 |
binmode(STDOUT); |
| 162 |
my $fh = *STDOUT; |
| 163 |
if ( $ShareName eq "*" ) { |
| 164 |
my $PathRemoveOrig = $PathRemove; |
| 165 |
my $PathAddOrig = $PathAdd; |
| 166 |
foreach $ShareName ( $view->shareList($Num) ) { |
| 167 |
#print(STDERR "Doing share ($ShareName)\n"); |
| 168 |
$PathRemove = "/" if ( !defined($PathRemoveOrig) ); |
| 169 |
($PathAdd = "/$ShareName/$PathAddOrig") =~ s{//+}{/}g; |
| 170 |
foreach my $dir ( @ARGV ) { |
| 171 |
archiveWrite($fh, $dir); |
| 172 |
} |
| 173 |
archiveWriteHardLinks($fh); |
| 174 |
} |
| 175 |
} else { |
| 176 |
foreach my $dir ( @ARGV ) { |
| 177 |
archiveWrite($fh, $dir); |
| 178 |
} |
| 179 |
archiveWriteHardLinks($fh); |
| 180 |
} |
| 181 |
|
| 182 |
# |
| 183 |
# Finish with two null 512 byte headers, and then round out a full |
| 184 |
# block. |
| 185 |
# |
| 186 |
my $data = "\0" x ($tar_header_length * 2); |
| 187 |
TarWrite($fh, \$data); |
| 188 |
TarWrite($fh, undef); |
| 189 |
|
| 190 |
# |
| 191 |
# print out totals if requested |
| 192 |
# |
| 193 |
if ( $opts{t} ) { |
| 194 |
print STDERR "Done: $FileCnt files, $ByteCnt bytes, $DirCnt dirs,", |
| 195 |
" $SpecialCnt specials, $ErrorCnt errors\n"; |
| 196 |
} |
| 197 |
if ( $ErrorCnt && !$FileCnt && !$DirCnt ) { |
| 198 |
# |
| 199 |
# Got errors, with no files or directories; exit with non-zero |
| 200 |
# status |
| 201 |
# |
| 202 |
exit(1); |
| 203 |
} |
| 204 |
exit(0); |
| 205 |
|
| 206 |
########################################################################### |
| 207 |
# Subroutines |
| 208 |
########################################################################### |
| 209 |
|
| 210 |
sub archiveWrite |
| 211 |
{ |
| 212 |
my($fh, $dir, $tarPathOverride) = @_; |
| 213 |
|
| 214 |
if ( $dir =~ m{(^|/)\.\.(/|$)} ) { |
| 215 |
print(STDERR "$0: bad directory '$dir'\n"); |
| 216 |
$ErrorCnt++; |
| 217 |
return; |
| 218 |
} |
| 219 |
$dir = "/" if ( $dir eq "." ); |
| 220 |
#print(STDERR "calling find with $Num, $ShareName, $dir\n"); |
| 221 |
|
| 222 |
if ( $view->find($Num, $ShareName, $dir, 0, \&TarWriteFile, |
| 223 |
$fh, $tarPathOverride) < 0 ) { |
| 224 |
print(STDERR "$0: bad share or directory '$ShareName/$dir'\n"); |
| 225 |
$ErrorCnt++; |
| 226 |
return; |
| 227 |
} |
| 228 |
} |
| 229 |
|
| 230 |
# |
| 231 |
# Write out any hardlinks (if any) |
| 232 |
# |
| 233 |
sub archiveWriteHardLinks |
| 234 |
{ |
| 235 |
my $fh = @_; |
| 236 |
foreach my $hdr ( @HardLinks ) { |
| 237 |
$hdr->{size} = 0; |
| 238 |
if ( defined($PathRemove) |
| 239 |
&& substr($hdr->{linkname}, 0, length($PathRemove)+1) |
| 240 |
eq ".$PathRemove" ) { |
| 241 |
substr($hdr->{linkname}, 0, length($PathRemove)+1) = ".$PathAdd"; |
| 242 |
} |
| 243 |
TarWriteFileInfo($fh, $hdr); |
| 244 |
} |
| 245 |
@HardLinks = (); |
| 246 |
%HardLinkExtraFiles = (); |
| 247 |
} |
| 248 |
|
| 249 |
sub UidLookup |
| 250 |
{ |
| 251 |
my($uid) = @_; |
| 252 |
|
| 253 |
$UidCache{$uid} = (getpwuid($uid))[0] if ( !exists($UidCache{$uid}) ); |
| 254 |
return $UidCache{$uid}; |
| 255 |
} |
| 256 |
|
| 257 |
sub GidLookup |
| 258 |
{ |
| 259 |
my($gid) = @_; |
| 260 |
|
| 261 |
$GidCache{$gid} = (getgrgid($gid))[0] if ( !exists($GidCache{$gid}) ); |
| 262 |
return $GidCache{$gid}; |
| 263 |
} |
| 264 |
|
| 265 |
sub TarWrite |
| 266 |
{ |
| 267 |
my($fh, $dataRef) = @_; |
| 268 |
|
| 269 |
if ( !defined($dataRef) ) { |
| 270 |
# |
| 271 |
# do flush by padding to a full $WriteBufSz |
| 272 |
# |
| 273 |
my $data = "\0" x ($WriteBufSz - length($WriteBuf)); |
| 274 |
$dataRef = \$data; |
| 275 |
} |
| 276 |
if ( length($WriteBuf) + length($$dataRef) < $WriteBufSz ) { |
| 277 |
# |
| 278 |
# just buffer and return |
| 279 |
# |
| 280 |
$WriteBuf .= $$dataRef; |
| 281 |
return; |
| 282 |
} |
| 283 |
my $done = $WriteBufSz - length($WriteBuf); |
| 284 |
if ( syswrite($fh, $WriteBuf . substr($$dataRef, 0, $done)) |
| 285 |
!= $WriteBufSz ) { |
| 286 |
print(STDERR "Unable to write to output file ($!)\n"); |
| 287 |
exit(1); |
| 288 |
} |
| 289 |
while ( $done + $WriteBufSz <= length($$dataRef) ) { |
| 290 |
if ( syswrite($fh, substr($$dataRef, $done, $WriteBufSz)) |
| 291 |
!= $WriteBufSz ) { |
| 292 |
print(STDERR "Unable to write to output file ($!)\n"); |
| 293 |
exit(1); |
| 294 |
} |
| 295 |
$done += $WriteBufSz; |
| 296 |
} |
| 297 |
$WriteBuf = substr($$dataRef, $done); |
| 298 |
} |
| 299 |
|
| 300 |
sub TarWritePad |
| 301 |
{ |
| 302 |
my($fh, $size) = @_; |
| 303 |
|
| 304 |
if ( $size % $tar_header_length ) { |
| 305 |
my $data = "\0" x ($tar_header_length - ($size % $tar_header_length)); |
| 306 |
TarWrite($fh, \$data); |
| 307 |
} |
| 308 |
} |
| 309 |
|
| 310 |
sub TarWriteHeader |
| 311 |
{ |
| 312 |
my($fh, $hdr) = @_; |
| 313 |
|
| 314 |
$hdr->{uname} = UidLookup($hdr->{uid}) if ( !defined($hdr->{uname}) ); |
| 315 |
$hdr->{gname} = GidLookup($hdr->{gid}) if ( !defined($hdr->{gname}) ); |
| 316 |
my $devmajor = defined($hdr->{devmajor}) ? sprintf("%07o", $hdr->{devmajor}) |
| 317 |
: ""; |
| 318 |
my $devminor = defined($hdr->{devminor}) ? sprintf("%07o", $hdr->{devminor}) |
| 319 |
: ""; |
| 320 |
my $sizeStr; |
| 321 |
if ( $hdr->{size} >= 2 * 65536 * 65536 ) { |
| 322 |
# |
| 323 |
# GNU extension for files >= 8GB: send size in big-endian binary |
| 324 |
# |
| 325 |
$sizeStr = pack("c4 N N", 0x80, 0, 0, 0, |
| 326 |
$hdr->{size} / (65536 * 65536), |
| 327 |
$hdr->{size} % (65536 * 65536)); |
| 328 |
} elsif ( $hdr->{size} >= 1 * 65536 * 65536 ) { |
| 329 |
# |
| 330 |
# sprintf octal only handles up to 2^32 - 1 |
| 331 |
# |
| 332 |
$sizeStr = sprintf("%03o", $hdr->{size} / (1 << 24)) |
| 333 |
. sprintf("%08o", $hdr->{size} % (1 << 24)); |
| 334 |
} else { |
| 335 |
$sizeStr = sprintf("%011o", $hdr->{size}); |
| 336 |
} |
| 337 |
my $data = pack($tar_pack_header, |
| 338 |
substr($hdr->{name}, 0, 99), |
| 339 |
sprintf("%07o", $hdr->{mode}), |
| 340 |
sprintf("%07o", $hdr->{uid}), |
| 341 |
sprintf("%07o", $hdr->{gid}), |
| 342 |
$sizeStr, |
| 343 |
sprintf("%011o", $hdr->{mtime}), |
| 344 |
"", #checksum field - space padded by pack("A8") |
| 345 |
$hdr->{type}, |
| 346 |
substr($hdr->{linkname}, 0, 99), |
| 347 |
$hdr->{magic} || 'ustar ', |
| 348 |
$hdr->{version} || ' ', |
| 349 |
$hdr->{uname}, |
| 350 |
$hdr->{gname}, |
| 351 |
$devmajor, |
| 352 |
$devminor, |
| 353 |
"" # prefix is empty |
| 354 |
); |
| 355 |
substr($data, 148, 7) = sprintf("%06o\0", unpack("%16C*",$data)); |
| 356 |
TarWrite($fh, \$data); |
| 357 |
} |
| 358 |
|
| 359 |
sub TarWriteFileInfo |
| 360 |
{ |
| 361 |
my($fh, $hdr) = @_; |
| 362 |
|
| 363 |
# |
| 364 |
# Handle long link names (symbolic links) |
| 365 |
# |
| 366 |
if ( length($hdr->{linkname}) > 99 ) { |
| 367 |
my %h; |
| 368 |
my $data = $hdr->{linkname} . "\0"; |
| 369 |
$h{name} = "././\@LongLink"; |
| 370 |
$h{type} = "K"; |
| 371 |
$h{size} = length($data); |
| 372 |
TarWriteHeader($fh, \%h); |
| 373 |
TarWrite($fh, \$data); |
| 374 |
TarWritePad($fh, length($data)); |
| 375 |
} |
| 376 |
# |
| 377 |
# Handle long file names |
| 378 |
# |
| 379 |
if ( length($hdr->{name}) > 99 ) { |
| 380 |
my %h; |
| 381 |
my $data = $hdr->{name} . "\0"; |
| 382 |
$h{name} = "././\@LongLink"; |
| 383 |
$h{type} = "L"; |
| 384 |
$h{size} = length($data); |
| 385 |
TarWriteHeader($fh, \%h); |
| 386 |
TarWrite($fh, \$data); |
| 387 |
TarWritePad($fh, length($data)); |
| 388 |
} |
| 389 |
TarWriteHeader($fh, $hdr); |
| 390 |
} |
| 391 |
|
| 392 |
# |
| 393 |
# returns 1 if a given directory has files somewhere under it |
| 394 |
# in a given dump of a given share |
| 395 |
# |
| 396 |
sub checkSubDirs($$$$) { |
| 397 |
my ($dir, $share, $host, $dumpNo) = @_; |
| 398 |
my $ret; |
| 399 |
my $dsn = $Conf{SearchDSN}; |
| 400 |
my $db_user = $Conf{SearchUser} || ''; |
| 401 |
my $search_sql; |
| 402 |
|
| 403 |
print(STDERR $dir); |
| 404 |
# erase first dot |
| 405 |
if (substr($dir, 0, 1) == '.') |
| 406 |
{ |
| 407 |
$dir = substr($dir, 1, length($dir)); |
| 408 |
} |
| 409 |
# erase first slash |
| 410 |
if (substr($dir, 0, 1) == '/') |
| 411 |
{ |
| 412 |
$dir = substr($dir, 1, length($dir)); |
| 413 |
} |
| 414 |
# erase last slash |
| 415 |
if (substr($dir, length($dir)-1, 1) == '/') |
| 416 |
{ |
| 417 |
$dir = substr($dir, 0, length($dir)-1); |
| 418 |
} |
| 419 |
|
| 420 |
if (! $db_done) |
| 421 |
{ |
| 422 |
print STDERR "doing db..."; |
| 423 |
my $search_sql = q{ |
| 424 |
SELECT hosts.name, shares.name, startfiles.name, COUNT(files.*) AS subfiles |
| 425 |
FROM files startfiles |
| 426 |
INNER JOIN shares ON (shares.id=startfiles.shareid) |
| 427 |
INNER JOIN hosts ON (hosts.id=shares.hostid) |
| 428 |
INNER JOIN backups ON ( |
| 429 |
backups.num=startfiles.backupnum AND |
| 430 |
backups.hostid=hosts.id AND backups.shareid=shares.id |
| 431 |
) |
| 432 |
LEFT JOIN files ON ( |
| 433 |
files.backupnum=startfiles.backupnum AND |
| 434 |
files.shareid=startfiles.shareid AND |
| 435 |
files.path LIKE startfiles.path || '/%' AND |
| 436 |
files.type<>startfiles.type AND |
| 437 |
files.id <> startfiles.id |
| 438 |
) |
| 439 |
WHERE |
| 440 |
hosts.name=? AND |
| 441 |
shares.name=? AND |
| 442 |
startfiles.type=? AND |
| 443 |
startfiles.backupnum=? |
| 444 |
GROUP BY hosts.name, shares.name, startfiles.name, startfiles.backupnum; |
| 445 |
}; |
| 446 |
my $dbh = DBI->connect($dsn, $db_user, "", { RaiseError => 1, AutoCommit => 1} ); |
| 447 |
my $sth = $dbh->prepare($search_sql); |
| 448 |
$sth->execute($host, $share, BPC_FTYPE_DIR, $dumpNo); |
| 449 |
print STDERR "done\n"; |
| 450 |
while (my @r_data = $sth->fetchrow_array()) |
| 451 |
{ |
| 452 |
$DBCache[$r_data[0]][$r_data[1]][$r_data[2]] = 1; |
| 453 |
} |
| 454 |
|
| 455 |
$sth->finish(); |
| 456 |
|
| 457 |
$DBCache[$host][$share][$dir] = $ret; |
| 458 |
$dbh->disconnect(); |
| 459 |
$db_done = 1; |
| 460 |
} |
| 461 |
|
| 462 |
if ($DBCache[$host][$share][$dir] != undef && $DBCache[$host][$share][$dir] == 1) |
| 463 |
{ |
| 464 |
return 1; |
| 465 |
} |
| 466 |
return 0; |
| 467 |
} |
| 468 |
|
| 469 |
my $Attr; |
| 470 |
my $AttrDir; |
| 471 |
|
| 472 |
sub TarWriteFile |
| 473 |
{ |
| 474 |
my($hdr, $fh, $tarPathOverride) = @_; |
| 475 |
|
| 476 |
|
| 477 |
my $tarPath = $hdr->{relPath}; |
| 478 |
$tarPath = $tarPathOverride if ( defined($tarPathOverride) ); |
| 479 |
|
| 480 |
$tarPath =~ s{//+}{/}g; |
| 481 |
if ( defined($PathRemove) |
| 482 |
&& substr($tarPath, 0, length($PathRemove)) eq $PathRemove ) { |
| 483 |
substr($tarPath, 0, length($PathRemove)) = $PathAdd; |
| 484 |
} |
| 485 |
$tarPath = "./" . $tarPath if ( $tarPath !~ /^\.\// ); |
| 486 |
$tarPath =~ s{//+}{/}g; |
| 487 |
$hdr->{name} = $tarPath; |
| 488 |
|
| 489 |
if ( $hdr->{type} == BPC_FTYPE_DIR ) { |
| 490 |
# |
| 491 |
# Directory: just write the header |
| 492 |
# |
| 493 |
|
| 494 |
|
| 495 |
$hdr->{name} .= "/" if ( $hdr->{name} !~ m{/$} ); |
| 496 |
# check if it has files under it in the database |
| 497 |
if ( checkSubDirs($hdr->{path}, $ShareName, $Host, $Num) != 0 ) |
| 498 |
{ |
| 499 |
TarWriteFileInfo($fh, $hdr); |
| 500 |
$DirCnt++; |
| 501 |
} |
| 502 |
} elsif ( $hdr->{type} == BPC_FTYPE_FILE ) { |
| 503 |
# |
| 504 |
# Regular file: write the header and file |
| 505 |
# |
| 506 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, $hdr->{compress}); |
| 507 |
if ( !defined($f) ) { |
| 508 |
print(STDERR "Unable to open file $hdr->{fullPath}\n"); |
| 509 |
$ErrorCnt++; |
| 510 |
return; |
| 511 |
} |
| 512 |
TarWriteFileInfo($fh, $hdr); |
| 513 |
my($data, $size); |
| 514 |
while ( $f->read(\$data, $BufSize) > 0 ) { |
| 515 |
TarWrite($fh, \$data); |
| 516 |
$size += length($data); |
| 517 |
} |
| 518 |
$f->close; |
| 519 |
TarWritePad($fh, $size); |
| 520 |
$FileCnt++; |
| 521 |
$ByteCnt += $size; |
| 522 |
} elsif ( $hdr->{type} == BPC_FTYPE_HARDLINK ) { |
| 523 |
# |
| 524 |
# Hardlink file: either write a hardlink or the complete file |
| 525 |
# depending upon whether the linked-to file will be written |
| 526 |
# to the archive. |
| 527 |
# |
| 528 |
# Start by reading the contents of the link. |
| 529 |
# |
| 530 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, $hdr->{compress}); |
| 531 |
if ( !defined($f) ) { |
| 532 |
print(STDERR "Unable to open file $hdr->{fullPath}\n"); |
| 533 |
$ErrorCnt++; |
| 534 |
return; |
| 535 |
} |
| 536 |
my $data; |
| 537 |
while ( $f->read(\$data, $BufSize) > 0 ) { |
| 538 |
$hdr->{linkname} .= $data; |
| 539 |
} |
| 540 |
$f->close; |
| 541 |
# |
| 542 |
# Check @ARGV and the list of hardlinked files we have explicity |
| 543 |
# dumped to see if we have dumped this file or not |
| 544 |
# |
| 545 |
my $done = 0; |
| 546 |
my $name = $hdr->{linkname}; |
| 547 |
$name =~ s{^\./}{/}; |
| 548 |
if ( $HardLinkExtraFiles{$name} ) { |
| 549 |
$done = 1; |
| 550 |
} else { |
| 551 |
foreach my $arg ( @ARGV ) { |
| 552 |
$arg =~ s{^\./+}{/}; |
| 553 |
$arg =~ s{/+$}{}; |
| 554 |
$done = 1 if ( $name eq $arg || $name =~ /^\Q$arg\// ); |
| 555 |
} |
| 556 |
} |
| 557 |
if ( $done ) { |
| 558 |
# |
| 559 |
# Target file will be or was written, so just remember |
| 560 |
# the hardlink so we can dump it later. |
| 561 |
# |
| 562 |
push(@HardLinks, $hdr); |
| 563 |
$SpecialCnt++; |
| 564 |
} else { |
| 565 |
# |
| 566 |
# Have to dump the original file. Just call the top-level |
| 567 |
# routine, so that we save the hassle of dealing with |
| 568 |
# mangling, merging and attributes. |
| 569 |
# |
| 570 |
$HardLinkExtraFiles{$hdr->{linkname}} = 1; |
| 571 |
archiveWrite($fh, $hdr->{linkname}, $hdr->{name}); |
| 572 |
} |
| 573 |
} elsif ( $hdr->{type} == BPC_FTYPE_SYMLINK ) { |
| 574 |
# |
| 575 |
# Symbolic link: read the symbolic link contents into the header |
| 576 |
# and write the header. |
| 577 |
# |
| 578 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, $hdr->{compress}); |
| 579 |
if ( !defined($f) ) { |
| 580 |
print(STDERR "Unable to open symlink file $hdr->{fullPath}\n"); |
| 581 |
$ErrorCnt++; |
| 582 |
return; |
| 583 |
} |
| 584 |
my $data; |
| 585 |
while ( $f->read(\$data, $BufSize) > 0 ) { |
| 586 |
$hdr->{linkname} .= $data; |
| 587 |
} |
| 588 |
$f->close; |
| 589 |
$hdr->{size} = 0; |
| 590 |
TarWriteFileInfo($fh, $hdr); |
| 591 |
$SpecialCnt++; |
| 592 |
} elsif ( $hdr->{type} == BPC_FTYPE_CHARDEV |
| 593 |
|| $hdr->{type} == BPC_FTYPE_BLOCKDEV |
| 594 |
|| $hdr->{type} == BPC_FTYPE_FIFO ) { |
| 595 |
# |
| 596 |
# Special files: for char and block special we read the |
| 597 |
# major and minor numbers from a plain file. |
| 598 |
# |
| 599 |
if ( $hdr->{type} != BPC_FTYPE_FIFO ) { |
| 600 |
my $f = BackupPC::FileZIO->open($hdr->{fullPath}, 0, |
| 601 |
$hdr->{compress}); |
| 602 |
my $data; |
| 603 |
if ( !defined($f) || $f->read(\$data, $BufSize) < 0 ) { |
| 604 |
print(STDERR "Unable to open/read char/block special file" |
| 605 |
. " $hdr->{fullPath}\n"); |
| 606 |
$f->close if ( defined($f) ); |
| 607 |
$ErrorCnt++; |
| 608 |
return; |
| 609 |
} |
| 610 |
$f->close; |
| 611 |
if ( $data =~ /(\d+),(\d+)/ ) { |
| 612 |
$hdr->{devmajor} = $1; |
| 613 |
$hdr->{devminor} = $2; |
| 614 |
} |
| 615 |
} |
| 616 |
$hdr->{size} = 0; |
| 617 |
TarWriteFileInfo($fh, $hdr); |
| 618 |
$SpecialCnt++; |
| 619 |
} else { |
| 620 |
print(STDERR "Got unknown type $hdr->{type} for $hdr->{name}\n"); |
| 621 |
$ErrorCnt++; |
| 622 |
} |
| 623 |
} |
Parent Directory
| 
Revision Log