X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=dupemerge;a=blobdiff_plain;f=faster-dupemerge;h=4cdef9716fd5e5de600b9810a198936ca9d46301;hp=b7554dee59e78b32f89b88772db070ea58e2321f;hb=0c34a3856f509e8b615afc0fed52b7399fee21df;hpb=77a91221531d6e674b0c6e3c53ca742b51dafc1d diff --git a/faster-dupemerge b/faster-dupemerge index b7554de..4cdef97 100755 --- a/faster-dupemerge +++ b/faster-dupemerge @@ -1,15 +1,25 @@ #!/usr/bin/perl -w -# $Id$ - -# Copyright (C) 2002-2003 by Zygo Blaxell -# Use, modification, and distribution permitted -# under the terms of the GNU GPL. - use strict; use Fcntl qw(:DEFAULT :flock); use File::Compare; use File::Temp; +# Copyright (C) 2002-2010 Zygo Blaxell + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + my $input_links = 0; my $input_files = 0; my $input_bogons = 0; @@ -76,9 +86,14 @@ my $collapse_access = 0; my $collapse_timestamp = 0; my $collapse_zero = 0; my $skip_compares = 0; +my $skip_compare_preference = 0; my $skip_hashes = 0; +my $skip_hashes_threshold = 0; +my $progress = 0; my $verbose = 0; my $debug = 0; +my $dry_run = 0; +my $humane = 0; my @extra_find_opts = (); my @extra_sort_opts = (); my $lock_file; @@ -90,6 +105,7 @@ sub digest { if ($skip_hashes) { return "SKIPPING HASHES"; } else { + print STDERR 'H' if $progress; my $digest = &really_digest($filename); $hash_bytes += -s $filename; $hash_files++; @@ -120,20 +136,37 @@ hard links). --debug show all steps in duplication discovery process (implies --verbose) + --dry-run do not lock files or make changes to filesystem + --find pass next options (up to --) to find command + --humane human-readable statistics (e.g. 1 048 576) + --lock FILE exit immediately (status 10) if unable to obtain a flock(LOCK_EX|LOCK_NB) on FILE - --lock-rm remove lock file at exit + --lock-rm remove lock file at exit + + --progress output single-character progress indicators: + C - compare + H - hash + L - link(2) + R - rename(2) + S, s - lstat(2) (see source for details) + U - unlink(2) + . - all inodes with similar attributes done + (123456) - current file size in bytes --sort pass next options (up to --) to sort command --timestamps mtime may be different for identical files - --skip-compare skip byte-by-byte file comparisons + --skip-compare skip byte-by-byte file comparisons - --skip-hash skip calculation of hash function on files + --skip-hash[=N] skip calculation of hash function on files + larger than N bytes (default 1M). + Scalars KMGT specify KiB, MiB, GiB, and TiB. + Scalars kmgt specify KB, MB, GB, and TB. --trust old name for --skip-compare (trust the hash function) @@ -153,9 +186,26 @@ while ($#ARGV >= 0) { } elsif ($arg eq '--zeros') { $collapse_zero = 1; } elsif ($arg eq '--trust' || $arg eq '--skip-compare') { - $skip_compares = 1; - } elsif ($arg eq '--skip-hash') { - $skip_hashes = 1; + $skip_compares = $skip_compare_preference = 1; + } elsif ($arg =~ /^--skip-hash(?:=(\d+)([KkMmGgTt]?))?$/os) { + my ($quantity, $unit) = ($1, $2); + $unit ||= '_'; + $quantity ||= 1048576; + my %scale = ( + _ => 1, + k => 1000, + K => 1024, + m => 1000*1000, + M => 1024*1024, + g => 1000*1000*1000, + G => 1024*1024*1024, + t => 1000*1000*1000*1000, + T => 1024*1024*1024*1024, + ); + $skip_hashes = 0; + $skip_hashes_threshold = $quantity * $scale{$unit}; + } elsif ($arg eq '--progress') { + $progress = 1; } elsif ($arg eq '--verbose') { $verbose = 1; } elsif ($arg eq '--lock-rm') { @@ -168,6 +218,10 @@ while ($#ARGV >= 0) { } } elsif ($arg eq '--debug') { $debug = $verbose = 1; + } elsif ($arg eq '--dry-run') { + $dry_run = 1; + } elsif ($arg eq '--humane') { + $humane = 1; } elsif ($arg eq '--find') { while ($#ARGV >= 0) { my $extra_arg = shift(@ARGV); @@ -188,11 +242,9 @@ while ($#ARGV >= 0) { } } -if ($skip_hashes && $skip_compares) { - die "Cannot skip both hashes and compares.\n"; -} +@directories or usage($0); -if (defined($lock_file)) { +if (defined($lock_file) && !$dry_run) { sysopen(LOCK_FILE, $lock_file, O_CREAT|O_RDONLY, 0666) or die "open: $lock_file: $!"; flock(LOCK_FILE, LOCK_EX|LOCK_NB) or die "flock: $lock_file: LOCK_EX|LOCK_NB: $!"; print STDERR "Locked '$lock_file' in LOCK_EX mode.\n" if $verbose; @@ -200,7 +252,7 @@ if (defined($lock_file)) { } END { - if ($lock_obtained) { + if ($lock_obtained && !$dry_run) { print STDERR "Removing '$lock_file'.\n" if $verbose; unlink($lock_file) or warn "unlink: $lock_file: $!"; } @@ -208,7 +260,7 @@ END { sub tick_quote { my ($text) = (@_); - $text =~ s/'/'\''/go; + $text =~ s/'/'\\''/go; return "'$text'"; } @@ -216,7 +268,7 @@ my @find_command = ('find', @directories, @extra_find_opts, '-type', 'f'); my $printf_string = '%s ' . ($collapse_access ? '0 0 0 ' : '%U %G %m ') . ($collapse_timestamp ? '0 ' : '%T@ ') . - '%i %p\0'; + '%D %i %p\0'; push(@find_command, '!', '-empty') unless $collapse_zero; push(@find_command, '-printf', $printf_string); @@ -244,24 +296,39 @@ my %inode_to_file_name = (); # Link files sub link_files { my ($from, $to) = (@_); + + my $quoted_from = tick_quote($from); + my $quoted_to = tick_quote($to); + print STDERR "\n" if $progress; + print STDERR "ln -f $quoted_from $quoted_to\n"; + + return if $dry_run; + my $inode_dir = $to; my $inode_base = $to; $inode_dir =~ s:[^/]*$::o; $inode_base =~ s:^.*/::os; my $tmp_to = File::Temp::tempnam($inode_dir, ".$inode_base."); - my $quoted_from = tick_quote($from); - my $quoted_to = tick_quote($to); - print STDERR "ln -f $quoted_from $quoted_to\n"; print STDERR "\tlink: $from -> $tmp_to\n" if $debug; + print STDERR 'L' if $progress; link($from, $tmp_to) or die "link: $from -> $tmp_to: $!"; print STDERR "\trename: $tmp_to -> $to\n" if $debug; + print STDERR 'R' if $progress; unless (rename($tmp_to, $to)) { my $saved_bang = $!; + print STDERR 'U' if $progress; unlink($tmp_to) or warn "unlink: $tmp_to: $!"; # Try, possibly in vain, to clean up die "rename: $tmp_to -> $from: $saved_bang"; } } +# Convert $dev,$ino into a single string where lexical and numeric orderings are equivalent +sub format_inode ($$) { + my ($dev, $ino) = @_; + # 64 bits ought to be enough for everybody! + return sprintf('%016x:%016x', $dev, $ino); +} + # Process all known files so far. sub merge_files { $merges_attempted++; @@ -279,21 +346,23 @@ sub merge_files { } print STDERR "Merging...\n" if $debug; - foreach my $candidate (@candidate_list) { + foreach my $candidate (sort @candidate_list) { print STDERR "\tDigesting candidate $candidate\n" if $debug; my $ok = 0; my $digest; hash_file: - foreach my $filename (keys(%{$inode_to_file_name{$candidate}})) { + foreach my $filename (sort keys(%{$inode_to_file_name{$candidate}})) { print STDERR "\t\tDigesting file $filename\n" if $debug; if ((-l $filename) || ! -f _) { + print STDERR "\n" if $progress; warn "Bogon file " . tick_quote($filename); - $surprises++; + $input_bogons++; + delete $inode_to_file_name{$candidate}->{$filename}; next; } - eval { + eval { $digest = digest($filename); }; if ($@) { @@ -307,8 +376,9 @@ hash_file: if ($ok) { print STDERR "\t\tDigest is $digest\n" if $debug; - my $incumbent = $hash_to_inode{$digest}; - if (defined($incumbent)) { + my $incumbent_list = ($hash_to_inode{$digest} ||= []); + my $incumbent_matched = 0; + for my $incumbent (sort @$incumbent_list) { print STDERR "\t\tInodes $incumbent and $candidate have same hash\n" if $debug; my $finished = 0; @@ -316,25 +386,26 @@ hash_file: link_start: until ($finished) { - my @incumbent_names = keys(%{$inode_to_file_name{$incumbent}}); - my @candidate_names = keys(%{$inode_to_file_name{$candidate}}); - print STDERR "\t\tLinks to $incumbent:", join("\n\t\t\t", '', @incumbent_names), "\n" if $debug; + my @incumbent_names = sort keys(%{$inode_to_file_name{$incumbent}}); + my @candidate_names = sort keys(%{$inode_to_file_name{$candidate}}); + print STDERR "\t\tLinks to $incumbent:", join("\n\t\t\t", '', @incumbent_names), "\n" if $debug; print STDERR "\t\tLinks to $candidate:", join("\n\t\t\t", '', @candidate_names), "\n" if $debug; incumbent_file: foreach my $incumbent_file (@incumbent_names) { + print STDERR 'S' if $progress; my ($incumbent_dev,$incumbent_ino,$incumbent_mode,$incumbent_nlink,$incumbent_uid,$incumbent_gid,$incumbent_rdev,$incumbent_size,$incumbent_atime,$incumbent_mtime,$incumbent_ctime,$incumbent_blksize,$incumbent_blocks) = lstat($incumbent_file); print STDERR "\t\tINCUMBENT dev=$incumbent_dev ino=$incumbent_ino mode=$incumbent_mode nlink=$incumbent_nlink uid=$incumbent_uid gid=$incumbent_gid rdev=$incumbent_rdev size=$incumbent_size atime=$incumbent_atime mtime=$incumbent_mtime ctime=$incumbent_ctime blksize=$incumbent_blksize blocks=$incumbent_blocks _=$incumbent_file\n" if $debug; - if (!defined($incumbent_blocks)) { + if (!defined($incumbent_blocks) || ! (-f _)) { warn "lstat: $incumbent_file: $!"; $surprises++; next incumbent_file; } - if ($incumbent_ino != $incumbent) { - warn "$incumbent_file: expected inode $incumbent, found $incumbent_ino"; + if (format_inode($incumbent_dev, $incumbent_ino) ne $incumbent) { + warn "$incumbent_file: expected inode $incumbent, found ".format_inode($incumbent_dev, $incumbent_ino); $surprises++; next incumbent_file; } @@ -344,17 +415,18 @@ incumbent_file: candidate_file: foreach my $candidate_file (@candidate_names) { + print STDERR 's' if $progress; my ($candidate_dev,$candidate_ino,$candidate_mode,$candidate_nlink,$candidate_uid,$candidate_gid,$candidate_rdev,$candidate_size,$candidate_atime,$candidate_mtime,$candidate_ctime,$candidate_blksize,$candidate_blocks) = lstat($candidate_file); print STDERR "\t\t\tCANDIDATE dev=$candidate_dev ino=$candidate_ino mode=$candidate_mode nlink=$candidate_nlink uid=$candidate_uid gid=$candidate_gid rdev=$candidate_rdev size=$candidate_size atime=$candidate_atime mtime=$candidate_mtime ctime=$candidate_ctime blksize=$candidate_blksize blocks=$candidate_blocks _=$candidate_file\n" if $debug; - if (!defined($candidate_blocks)) { + if (!defined($candidate_blocks) || ! (-f _)) { warn "lstat: $candidate_file: $!"; $surprises++; next candidate_file; } - if ($candidate_ino != $candidate) { - warn "$candidate_file: expected inode $candidate, found $candidate_ino"; + if (format_inode($candidate_dev, $candidate_ino) ne $candidate) { + warn "$candidate_file: expected inode $candidate, found ".format_inode($candidate_dev, $candidate_ino); $surprises++; next candidate_file; } @@ -375,6 +447,7 @@ candidate_file: my $quoted_incumbent_file = tick_quote($incumbent_file); my $quoted_candidate_file = tick_quote($candidate_file); print STDERR "cmp $quoted_incumbent_file $quoted_candidate_file\n" if $debug; + print STDERR 'C' if $progress; if (compare($incumbent_file, $candidate_file)) { $compare_differences++; $identical = 0; @@ -385,6 +458,7 @@ candidate_file: print STDERR "$quoted_incumbent_file and $quoted_candidate_file have same hash but do not compare equal!\n" unless $skip_hashes; } else { $identical = 1; + $incumbent_matched = 1; } $compare_count++; $compare_bytes += $incumbent_size; @@ -415,6 +489,12 @@ candidate_file: my $link_done = 0; my ($from_file, $to_file, $from_inode, $to_inode, $from_nlink, $to_nlink); + + # If the candidate has more links than incumbent, replace incumbent with candidate. + # If the incumbent has more links than candidate, replace candidate with incumbent. + # If the link counts are equal, we saw incumbent first, so keep the incumbent. + # "We saw incumbent first" is significant because we explicitly sort the inodes. + # Thank Johannes Niess for this idea. if ($candidate_nlink > $incumbent_nlink) { $from_file = $candidate_file; $to_file = $incumbent_file; @@ -462,8 +542,8 @@ candidate_file: if ($link_done) { delete $inode_to_file_name{$to_inode}->{$to_file}; - $inode_to_file_name{$from_inode}->{$to_file} = undef; - $hash_to_inode{$digest} = $from_inode; + $inode_to_file_name{$from_inode}->{$to_file} = undef unless ($dry_run); + $hash_to_inode{$digest} = [ $from_inode ]; $hard_links++; if ($to_nlink == 1) { @@ -491,15 +571,17 @@ candidate_file: } $finished = 1; } - } else { + } + unless ($incumbent_matched) { print STDERR "\t\tNew hash entered\n" if $debug; - $hash_to_inode{$digest} = $candidate; + push(@$incumbent_list, $candidate); } } else { warn "No digests found for inode $candidate\n"; delete $inode_to_file_name{$candidate}; } } + print STDERR '.' if $progress; end_merge: @@ -507,16 +589,32 @@ end_merge: undef %inode_to_file_name; } +my $last_time = 0; +my $last_size = 0; + while () { - my ($weak_key, $inode, $name) = m/^(\d+ \d+ \d+ \d+ -?\d+) (\d+) (.+)\0$/so; + my ($weak_key, $size, $dev, $ino, $name) = m/^((\d+) \d+ \d+ \d+ -?[\d.]+) (\d+) (\d+) (.+)\0$/so; die "read error: $!\nLast input line was '$_'" unless defined($name); + my $inode = format_inode($dev, $ino); + print STDERR "weak_key=$weak_key inode=$inode name=$name\n" if $debug; - unless (! (-l $name) && (-f _)) { - warn "Bogon file " . tick_quote($name); - $input_bogons++; - next; + if ($skip_hashes_threshold && $size >= $skip_hashes_threshold) { + $skip_hashes = 1; + $skip_compares = 0; + } else { + $skip_hashes = 0; + $skip_compares = $skip_compare_preference; + } + + if ($progress) { + my $this_time = time(); + if ($this_time != $last_time && $size != $last_size) { + $last_time = $this_time; + $last_size = $size; + print STDERR "($size)"; + } } $input_links++; @@ -553,8 +651,376 @@ surprises $surprises trivially_unique $trivially_unique STATS +if ($humane) { + my $max_num_len = 0; + + sub measure_numbers { + my ($num) = @_; + my $len = length($num); + $len += int( (length($num) - 1) / 3); + $max_num_len = $len if $len > $max_num_len; + } + + (my $dummy = $stats_blob) =~ s/\d+/measure_numbers($&)/geos; + + sub space_numbers { + my ($num) = @_; + 1 while $num =~ s/(\d)(\d\d\d)((?: \d\d\d)*)$/$1 $2$3/os; + $num = ' ' x ($max_num_len - length($num)) . $num; + return $num; + } + + $stats_blob =~ s/\d+/space_numbers($&)/geos; +} + $stats_blob =~ s/([^\n]*\n[^\n]*? )(\s+)( [^\n]*\n)/$1 . ('.' x length($2)) . $3/oemg; +print STDERR "\n" if $progress; print STDERR $stats_blob; exit(0); + +__END__ + +################################################################################# +# GNU GENERAL PUBLIC LICENSE # +# Version 2, June 1991 # +# # +# Copyright (C) 1989, 1991 Free Software Foundation, Inc. # +# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # +# Everyone is permitted to copy and distribute verbatim copies # +# of this license document, but changing it is not allowed. # +# # +# Preamble # +# # +# The licenses for most software are designed to take away your # +# freedom to share and change it. By contrast, the GNU General Public # +# License is intended to guarantee your freedom to share and change free # +# software--to make sure the software is free for all its users. This # +# General Public License applies to most of the Free Software # +# Foundation's software and to any other program whose authors commit to # +# using it. 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Many people have made # +# generous contributions to the wide range of software distributed # +# through that system in reliance on consistent application of that # +# system; it is up to the author/donor to decide if he or she is willing # +# to distribute software through any other system and a licensee cannot # +# impose that choice. # +# # +# This section is intended to make thoroughly clear what is believed to # +# be a consequence of the rest of this License. # +# # +# 8. If the distribution and/or use of the Program is restricted in # +# certain countries either by patents or by copyrighted interfaces, the # +# original copyright holder who places the Program under this License # +# may add an explicit geographical distribution limitation excluding # +# those countries, so that distribution is permitted only in or among # +# countries not thus excluded. In such case, this License incorporates # +# the limitation as if written in the body of this License. # +# # +# 9. The Free Software Foundation may publish revised and/or new versions # +# of the General Public License from time to time. Such new versions will # +# be similar in spirit to the present version, but may differ in detail to # +# address new problems or concerns. # +# # +# Each version is given a distinguishing version number. If the Program # +# specifies a version number of this License which applies to it and "any # +# later version", you have the option of following the terms and conditions # +# either of that version or of any later version published by the Free # +# Software Foundation. If the Program does not specify a version number of # +# this License, you may choose any version ever published by the Free Software # +# Foundation. # +# # +# 10. If you wish to incorporate parts of the Program into other free # +# programs whose distribution conditions are different, write to the author # +# to ask for permission. For software which is copyrighted by the Free # +# Software Foundation, write to the Free Software Foundation; we sometimes # +# make exceptions for this. Our decision will be guided by the two goals # +# of preserving the free status of all derivatives of our free software and # +# of promoting the sharing and reuse of software generally. # +# # +# NO WARRANTY # +# # +# 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY # +# FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN # +# OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES # +# PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED # +# OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF # +# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS # +# TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE # +# PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, # +# REPAIR OR CORRECTION. # +# # +# 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING # +# WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR # +# REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, # +# INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING # +# OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED # +# TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY # +# YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER # +# PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE # +# POSSIBILITY OF SUCH DAMAGES. # +# # +# END OF TERMS AND CONDITIONS # +# # +# How to Apply These Terms to Your New Programs # +# # +# If you develop a new program, and you want it to be of the greatest # +# possible use to the public, the best way to achieve this is to make it # +# free software which everyone can redistribute and change under these terms. # +# # +# To do so, attach the following notices to the program. It is safest # +# to attach them to the start of each source file to most effectively # +# convey the exclusion of warranty; and each file should have at least # +# the "copyright" line and a pointer to where the full notice is found. # +# # +# # +# Copyright (C) # +# # +# This program is free software; you can redistribute it and/or modify # +# it under the terms of the GNU General Public License as published by # +# the Free Software Foundation; either version 2 of the License, or # +# (at your option) any later version. # +# # +# This program is distributed in the hope that it will be useful, # +# but WITHOUT ANY WARRANTY; without even the implied warranty of # +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # +# GNU General Public License for more details. # +# # +# You should have received a copy of the GNU General Public License # +# along with this program; if not, write to the Free Software # +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # +# # +# # +# Also add information on how to contact you by electronic and paper mail. # +# # +# If the program is interactive, make it output a short notice like this # +# when it starts in an interactive mode: # +# # +# Gnomovision version 69, Copyright (C) year name of author # +# Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. # +# This is free software, and you are welcome to redistribute it # +# under certain conditions; type `show c' for details. # +# # +# The hypothetical commands `show w' and `show c' should show the appropriate # +# parts of the General Public License. Of course, the commands you use may # +# be called something other than `show w' and `show c'; they could even be # +# mouse-clicks or menu items--whatever suits your program. # +# # +# You should also get your employer (if you work as a programmer) or your # +# school, if any, to sign a "copyright disclaimer" for the program, if # +# necessary. Here is a sample; alter the names: # +# # +# Yoyodyne, Inc., hereby disclaims all copyright interest in the program # +# `Gnomovision' (which makes passes at compilers) written by James Hacker. # +# # +# , 1 April 1989 # +# Ty Coon, President of Vice # +# # +# This General Public License does not permit incorporating your program into # +# proprietary programs. If your program is a subroutine library, you may # +# consider it more useful to permit linking proprietary applications with the # +# library. If this is what you want to do, use the GNU Library General # +# Public License instead of this License. # +#################################################################################