#!/usr/bin/perl -w # (c) 2007, Joe Perches <joe@perches.com> # created from checkpatch.pl # # Print selected MAINTAINERS information for # the files modified in a patch or for a file # # usage: perl scripts/get_maintainers.pl [OPTIONS] <patch> # perl scripts/get_maintainers.pl [OPTIONS] -f <file> # # Licensed under the terms of the GNU GPL License version 2 use strict; my $P = $0; my $V = '0.20'; use Getopt::Long qw(:config no_auto_abbrev); my $lk_path = "./"; my $email = 1; my $email_usename = 1; my $email_maintainer = 1; my $email_list = 1; my $email_subscriber_list = 0; my $email_git = 1; my $email_git_penguin_chiefs = 0; my $email_git_min_signatures = 1; my $email_git_max_maintainers = 5; my $email_git_min_percent = 5; my $email_git_since = "1-year-ago"; my $email_git_blame = 0; my $email_remove_duplicates = 1; my $output_multiline = 1; my $output_separator = ", "; my $scm = 0; my $web = 0; my $subsystem = 0; my $status = 0; my $from_filename = 0; my $pattern_depth = 0; my $version = 0; my $help = 0; my $exit = 0; my @penguin_chief = (); push(@penguin_chief,"Linus Torvalds:torvalds\@linux-foundation.org"); #Andrew wants in on most everything - 2009/01/14 #push(@penguin_chief,"Andrew Morton:akpm\@linux-foundation.org"); my @penguin_chief_names = (); foreach my $chief (@penguin_chief) { if ($chief =~ m/^(.*):(.*)/) { my $chief_name = $1; my $chief_addr = $2; push(@penguin_chief_names, $chief_name); } } my $penguin_chiefs = "\(" . join("|",@penguin_chief_names) . "\)"; # rfc822 email address - preloaded methods go here. my $rfc822_lwsp = "(?:(?:\\r\\n)?[ \\t])"; my $rfc822_char = '[\\000-\\377]'; if (!GetOptions( 'email!' => \$email, 'git!' => \$email_git, 'git-chief-penguins!' => \$email_git_penguin_chiefs, 'git-min-signatures=i' => \$email_git_min_signatures, 'git-max-maintainers=i' => \$email_git_max_maintainers, 'git-min-percent=i' => \$email_git_min_percent, 'git-since=s' => \$email_git_since, 'git-blame!' => \$email_git_blame, 'remove-duplicates!' => \$email_remove_duplicates, 'm!' => \$email_maintainer, 'n!' => \$email_usename, 'l!' => \$email_list, 's!' => \$email_subscriber_list, 'multiline!' => \$output_multiline, 'separator=s' => \$output_separator, 'subsystem!' => \$subsystem, 'status!' => \$status, 'scm!' => \$scm, 'web!' => \$web, 'pattern-depth=i' => \$pattern_depth, 'f|file' => \$from_filename, 'v|version' => \$version, 'h|help' => \$help, )) { usage(); die "$P: invalid argument\n"; } if ($help != 0) { usage(); exit 0; } if ($version != 0) { print("${P} ${V}\n"); exit 0; } if ($#ARGV < 0) { usage(); die "$P: argument missing: patchfile or -f file please\n"; } if ($output_separator ne ", ") { $output_multiline = 0; } my $selections = $email + $scm + $status + $subsystem + $web; if ($selections == 0) { usage(); die "$P: Missing required option: email, scm, status, subsystem or web\n"; } if ($email && ($email_maintainer + $email_list + $email_subscriber_list + $email_git + $email_git_penguin_chiefs + $email_git_blame) == 0) { usage(); die "$P: Please select at least 1 email option\n"; } if (!top_of_kernel_tree($lk_path)) { die "$P: The current directory does not appear to be " . "a linux kernel source tree.\n"; } ## Read MAINTAINERS for type/value pairs my @typevalue = (); open(MAINT, "<${lk_path}MAINTAINERS") || die "$P: Can't open MAINTAINERS\n"; while (<MAINT>) { my $line = $_; if ($line =~ m/^(\C):\s*(.*)/) { my $type = $1; my $value = $2; ##Filename pattern matching if ($type eq "F" || $type eq "X") { $value =~ s@\.@\\\.@g; ##Convert . to \. $value =~ s/\*/\.\*/g; ##Convert * to .* $value =~ s/\?/\./g; ##Convert ? to . ##if pattern is a directory and it lacks a trailing slash, add one if ((-d $value)) { $value =~ s@([^/])$@$1/@; } } push(@typevalue, "$type:$value"); } elsif (!/^(\s)*$/) { $line =~ s/\n$//g; push(@typevalue, $line); } } close(MAINT); my %mailmap; if ($email_remove_duplicates) { open(MAILMAP, "<${lk_path}.mailmap") || warn "$P: Can't open .mailmap\n"; while (<MAILMAP>) { my $line = $_; next if ($line =~ m/^\s*#/); next if ($line =~ m/^\s*$/); my ($name, $address) = parse_email($line); $line = format_email($name, $address); next if ($line =~ m/^\s*$/); if (exists($mailmap{$name})) { my $obj = $mailmap{$name}; push(@$obj, $address); } else { my @arr = ($address); $mailmap{$name} = \@arr; } } close(MAILMAP); } ## use the filenames on the command line or find the filenames in the patchfiles my @files = (); my @range = (); foreach my $file (@ARGV) { ##if $file is a directory and it lacks a trailing slash, add one if ((-d $file)) { $file =~ s@([^/])$@$1/@; } elsif (!(-f $file)) { die "$P: file '${file}' not found\n"; } if ($from_filename) { push(@files, $file); } else { my $file_cnt = @files; my $lastfile; open(PATCH, "<$file") or die "$P: Can't open ${file}\n"; while (<PATCH>) { if (m/^\+\+\+\s+(\S+)/) { my $filename = $1; $filename =~ s@^[^/]*/@@; $filename =~ s@\n@@; $lastfile = $filename; push(@files, $filename); } elsif (m/^\@\@ -(\d+),(\d+)/) { if ($email_git_blame) { push(@range, "$lastfile:$1:$2"); } } } close(PATCH); if ($file_cnt == @files) { warn "$P: file '${file}' doesn't appear to be a patch. " . "Add -f to options?\n"; } @files = sort_and_uniq(@files); } } my @email_to = (); my @list_to = (); my @scm = (); my @web = (); my @subsystem = (); my @status = (); # Find responsible parties foreach my $file (@files) { #Do not match excluded file patterns my $exclude = 0; foreach my $line (@typevalue) { if ($line =~ m/^(\C):\s*(.*)/) { my $type = $1; my $value = $2; if ($type eq 'X') { if (file_match_pattern($file, $value)) { $exclude = 1; last; } } } } if (!$exclude) { my $tvi = 0; my %hash; foreach my $line (@typevalue) { if ($line =~ m/^(\C):\s*(.*)/) { my $type = $1; my $value = $2; if ($type eq 'F') { if (file_match_pattern($file, $value)) { my $value_pd = ($value =~ tr@/@@); my $file_pd = ($file =~ tr@/@@); $value_pd++ if (substr($value,-1,1) ne "/"); if ($pattern_depth == 0 || (($file_pd - $value_pd) < $pattern_depth)) { $hash{$tvi} = $value_pd; } } } } $tvi++; } foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) { add_categories($line); } } if ($email && $email_git) { recent_git_signoffs($file); } if ($email && $email_git_blame) { git_assign_blame($file); } } if ($email) { foreach my $chief (@penguin_chief) { if ($chief =~ m/^(.*):(.*)/) { my $email_address; $email_address = format_email($1, $2); if ($email_git_penguin_chiefs) { push(@email_to, $email_address); } else { @email_to = grep(!/${email_address}/, @email_to); } } } } if ($email || $email_list) { my @to = (); if ($email) { @to = (@to, @email_to); } if ($email_list) { @to = (@to, @list_to); } output(uniq(@to)); } if ($scm) { @scm = uniq(@scm); output(@scm); } if ($status) { @status = uniq(@status); output(@status); } if ($subsystem) { @subsystem = uniq(@subsystem); output(@subsystem); } if ($web) { @web = uniq(@web); output(@web); } exit($exit); sub file_match_pattern { my ($file, $pattern) = @_; if (substr($pattern, -1) eq "/") { if ($file =~ m@^$pattern@) { return 1; } } else { if ($file =~ m@^$pattern@) { my $s1 = ($file =~ tr@/@@); my $s2 = ($pattern =~ tr@/@@); if ($s1 == $s2) { return 1; } } } return 0; } sub usage { print <<EOT; usage: $P [options] patchfile $P [options] -f file|directory version: $V MAINTAINER field selection options: --email => print email address(es) if any --git => include recent git \*-by: signers --git-chief-penguins => include ${penguin_chiefs} --git-min-signatures => number of signatures required (default: 1) --git-max-maintainers => maximum maintainers to add (default: 5) --git-min-percent => minimum percentage of commits required (default: 5) --git-since => git history to use (default: 1-year-ago) --git-blame => use git blame to find modified commits for patch or file --m => include maintainer(s) if any --n => include name 'Full Name <addr\@domain.tld>' --l => include list(s) if any --s => include subscriber only list(s) if any --remove-duplicates => minimize duplicate email names/addresses --scm => print SCM tree(s) if any --status => print status if any --subsystem => print subsystem name if any --web => print website(s) if any Output type options: --separator [, ] => separator for multiple entries on 1 line using --separator also sets --nomultiline if --separator is not [, ] --multiline => print 1 entry per line Other options: --pattern-depth => Number of pattern directory traversals (default: 0 (all)) --version => show version --help => show this help information Default options: [--email --git --m --n --l --multiline --pattern-depth=0 --remove-duplicates] Notes: Using "-f directory" may give unexpected results: Used with "--git", git signators for _all_ files in and below directory are examined as git recurses directories. Any specified X: (exclude) pattern matches are _not_ ignored. Used with "--nogit", directory is used as a pattern match, no individual file within the directory or subdirectory is matched. Used with "--git-blame", does not iterate all files in directory Using "--git-blame" is slow and may add old committers and authors that are no longer active maintainers to the output. EOT } sub top_of_kernel_tree { my ($lk_path) = @_; if ($lk_path ne "" && substr($lk_path,length($lk_path)-1,1) ne "/") { $lk_path .= "/"; } if ( (-f "${lk_path}COPYING") && (-f "${lk_path}CREDITS") && (-f "${lk_path}Kbuild") && (-f "${lk_path}MAINTAINERS") && (-f "${lk_path}Makefile") && (-f "${lk_path}README") && (-d "${lk_path}Documentation") && (-d "${lk_path}arch") && (-d "${lk_path}include") && (-d "${lk_path}drivers") && (-d "${lk_path}fs") && (-d "${lk_path}init") && (-d "${lk_path}ipc") && (-d "${lk_path}kernel") && (-d "${lk_path}lib") && (-d "${lk_path}scripts")) { return 1; } return 0; } sub parse_email { my ($formatted_email) = @_; my $name = ""; my $address = ""; if ($formatted_email =~ /^([^<]+)<(.+\@.*)>.*$/) { $name = $1; $address = $2; } elsif ($formatted_email =~ /^\s*<(.+\@\S*)>.*$/) { $address = $1; } elsif ($formatted_email =~ /^(.+\@\S*).*$/) { $address = $1; } $name =~ s/^\s+|\s+$//g; $name =~ s/^\"|\"$//g; $address =~ s/^\s+|\s+$//g; if ($name =~ /[^a-z0-9 \.\-]/i) { ##has "must quote" chars $name =~ s/(?<!\\)"/\\"/g; ##escape quotes $name = "\"$name\""; } return ($name, $address); } sub format_email { my ($name, $address) = @_; my $formatted_email; $name =~ s/^\s+|\s+$//g; $name =~ s/^\"|\"$//g; $address =~ s/^\s+|\s+$//g; if ($name =~ /[^a-z0-9 \.\-]/i) { ##has "must quote" chars $name =~ s/(?<!\\)"/\\"/g; ##escape quotes $name = "\"$name\""; } if ($email_usename) { if ("$name" eq "") { $formatted_email = "$address"; } else { $formatted_email = "$name <${address}>"; } } else { $formatted_email = $address; } return $formatted_email; } sub find_starting_index { my ($index) = @_; while ($index > 0) { my $tv = $typevalue[$index]; if (!($tv =~ m/^(\C):\s*(.*)/)) { last; } $index--; } return $index; } sub find_ending_index { my ($index) = @_; while ($index < @typevalue) { my $tv = $typevalue[$index]; if (!($tv =~ m/^(\C):\s*(.*)/)) { last; } $index++; } return $index; } sub add_categories { my ($index) = @_; my $i; my $start = find_starting_index($index); my $end = find_ending_index($index); push(@subsystem, $typevalue[$start]); for ($i = $start + 1; $i < $end; $i++) { my $tv = $typevalue[$i]; if ($tv =~ m/^(\C):\s*(.*)/) { my $ptype = $1; my $pvalue = $2; if ($ptype eq "L") { my $list_address = $pvalue; my $list_additional = ""; if ($list_address =~ m/([^\s]+)\s+(.*)$/) { $list_address = $1; $list_additional = $2; } if ($list_additional =~ m/subscribers-only/) { if ($email_subscriber_list) { push(@list_to, $list_address); } } else { if ($email_list) { push(@list_to, $list_address); } } } elsif ($ptype eq "M") { my ($name, $address) = parse_email($pvalue); if ($name eq "") { if ($i > 0) { my $tv = $typevalue[$i - 1]; if ($tv =~ m/^(\C):\s*(.*)/) { if ($1 eq "P") { $name = $2; $pvalue = format_email($name, $address); } } } } if ($email_maintainer) { push_email_addresses($pvalue); } } elsif ($ptype eq "T") { push(@scm, $pvalue); } elsif ($ptype eq "W") { push(@web, $pvalue); } elsif ($ptype eq "S") { push(@status, $pvalue); } } } } my %email_hash_name; my %email_hash_address; sub email_inuse { my ($name, $address) = @_; return 1 if (($name eq "") && ($address eq "")); return 1 if (($name ne "") && exists($email_hash_name{$name})); return 1 if (($address ne "") && exists($email_hash_address{$address})); return 0; } sub push_email_address { my ($line) = @_; my ($name, $address) = parse_email($line); if ($address eq "") { return 0; } if (!$email_remove_duplicates) { push(@email_to, format_email($name, $address)); } elsif (!email_inuse($name, $address)) { push(@email_to, format_email($name, $address)); $email_hash_name{$name}++; $email_hash_address{$address}++; } return 1; } sub push_email_addresses { my ($address) = @_; my @address_list = (); if (rfc822_valid($address)) { push_email_address($address); } elsif (@address_list = rfc822_validlist($address)) { my $array_count = shift(@address_list); while (my $entry = shift(@address_list)) { push_email_address($entry); } } else { if (!push_email_address($address)) { warn("Invalid MAINTAINERS address: '" . $address . "'\n"); } } } sub which { my ($bin) = @_; foreach my $path (split(/:/, $ENV{PATH})) { if (-e "$path/$bin") { return "$path/$bin"; } } return ""; } sub mailmap { my @lines = @_; my %hash; foreach my $line (@lines) { my ($name, $address) = parse_email($line); if (!exists($hash{$name})) { $hash{$name} = $address; } elsif ($address ne $hash{$name}) { $address = $hash{$name}; $line = format_email($name, $address); } if (exists($mailmap{$name})) { my $obj = $mailmap{$name}; foreach my $map_address (@$obj) { if (($map_address eq $address) && ($map_address ne $hash{$name})) { $line = format_email($name, $hash{$name}); } } } } return @lines; } sub recent_git_signoffs { my ($file) = @_; my $sign_offs = ""; my $cmd = ""; my $output = ""; my $count = 0; my @lines = (); my %hash; my $total_sign_offs; if (which("git") eq "") { warn("$P: git not found. Add --nogit to options?\n"); return; } if (!(-d ".git")) { warn("$P: .git directory not found. Use a git repository for better results.\n"); warn("$P: perhaps 'git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git'\n"); return; } $cmd = "git log --since=${email_git_since} -- ${file}"; $output = `${cmd}`; $output =~ s/^\s*//gm; @lines = split("\n", $output); @lines = grep(/^[-_ a-z]+by:.*\@.*$/i, @lines); if (!$email_git_penguin_chiefs) { @lines = grep(!/${penguin_chiefs}/i, @lines); } # cut -f2- -d":" s/.*:\s*(.+)\s*/$1/ for (@lines); $total_sign_offs = @lines; if ($email_remove_duplicates) { @lines = mailmap(@lines); } @lines = sort(@lines); # uniq -c $hash{$_}++ for @lines; # sort -rn foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) { my $sign_offs = $hash{$line}; $count++; last if ($sign_offs < $email_git_min_signatures || $count > $email_git_max_maintainers || $sign_offs * 100 / $total_sign_offs < $email_git_min_percent); push_email_address($line); } } sub save_commits { my ($cmd, @commits) = @_; my $output; my @lines = (); $output = `${cmd}`; @lines = split("\n", $output); foreach my $line (@lines) { if ($line =~ m/^(\w+) /) { push (@commits, $1); } } return @commits; } sub git_assign_blame { my ($file) = @_; my @lines = (); my @commits = (); my $cmd; my $output; my %hash; my $total_sign_offs; my $count; if (@range) { foreach my $file_range_diff (@range) { next if (!($file_range_diff =~ m/(.+):(.+):(.+)/)); my $diff_file = $1; my $diff_start = $2; my $diff_length = $3; next if (!("$file" eq "$diff_file")); $cmd = "git blame -l -L $diff_start,+$diff_length $file"; @commits = save_commits($cmd, @commits); } } else { if (-f $file) { $cmd = "git blame -l $file"; @commits = save_commits($cmd, @commits); } } $total_sign_offs = 0; @commits = uniq(@commits); foreach my $commit (@commits) { $cmd = "git log -1 ${commit}"; $output = `${cmd}`; $output =~ s/^\s*//gm; @lines = split("\n", $output); @lines = grep(/^[-_ a-z]+by:.*\@.*$/i, @lines); if (!$email_git_penguin_chiefs) { @lines = grep(!/${penguin_chiefs}/i, @lines); } # cut -f2- -d":" s/.*:\s*(.+)\s*/$1/ for (@lines); $total_sign_offs += @lines; if ($email_remove_duplicates) { @lines = mailmap(@lines); } $hash{$_}++ for @lines; } $count = 0; foreach my $line (sort {$hash{$b} <=> $hash{$a}} keys %hash) { my $sign_offs = $hash{$line}; $count++; last if ($sign_offs < $email_git_min_signatures || $count > $email_git_max_maintainers || $sign_offs * 100 / $total_sign_offs < $email_git_min_percent); push_email_address($line); } } sub uniq { my @parms = @_; my %saw; @parms = grep(!$saw{$_}++, @parms); return @parms; } sub sort_and_uniq { my @parms = @_; my %saw; @parms = sort @parms; @parms = grep(!$saw{$_}++, @parms); return @parms; } sub output { my @parms = @_; if ($output_multiline) { foreach my $line (@parms) { print("${line}\n"); } } else { print(join($output_separator, @parms)); print("\n"); } } my $rfc822re; sub make_rfc822re { # Basic lexical tokens are specials, domain_literal, quoted_string, atom, and # comment. We must allow for rfc822_lwsp (or comments) after each of these. # This regexp will only work on addresses which have had comments stripped # and replaced with rfc822_lwsp. my $specials = '()<>@,;:\\\\".\\[\\]'; my $controls = '\\000-\\037\\177'; my $dtext = "[^\\[\\]\\r\\\\]"; my $domain_literal = "\\[(?:$dtext|\\\\.)*\\]$rfc822_lwsp*"; my $quoted_string = "\"(?:[^\\\"\\r\\\\]|\\\\.|$rfc822_lwsp)*\"$rfc822_lwsp*"; # Use zero-width assertion to spot the limit of an atom. A simple # $rfc822_lwsp* causes the regexp engine to hang occasionally. my $atom = "[^$specials $controls]+(?:$rfc822_lwsp+|\\Z|(?=[\\[\"$specials]))"; my $word = "(?:$atom|$quoted_string)"; my $localpart = "$word(?:\\.$rfc822_lwsp*$word)*"; my $sub_domain = "(?:$atom|$domain_literal)"; my $domain = "$sub_domain(?:\\.$rfc822_lwsp*$sub_domain)*"; my $addr_spec = "$localpart\@$rfc822_lwsp*$domain"; my $phrase = "$word*"; my $route = "(?:\@$domain(?:,\@$rfc822_lwsp*$domain)*:$rfc822_lwsp*)"; my $route_addr = "\\<$rfc822_lwsp*$route?$addr_spec\\>$rfc822_lwsp*"; my $mailbox = "(?:$addr_spec|$phrase$route_addr)"; my $group = "$phrase:$rfc822_lwsp*(?:$mailbox(?:,\\s*$mailbox)*)?;\\s*"; my $address = "(?:$mailbox|$group)"; return "$rfc822_lwsp*$address"; } sub rfc822_strip_comments { my $s = shift; # Recursively remove comments, and replace with a single space. The simpler # regexps in the Email Addressing FAQ are imperfect - they will miss escaped # chars in atoms, for example. while ($s =~ s/^((?:[^"\\]|\\.)* (?:"(?:[^"\\]|\\.)*"(?:[^"\\]|\\.)*)*) \((?:[^()\\]|\\.)*\)/$1 /osx) {} return $s; } # valid: returns true if the parameter is an RFC822 valid address # sub rfc822_valid ($) { my $s = rfc822_strip_comments(shift); if (!$rfc822re) { $rfc822re = make_rfc822re(); } return $s =~ m/^$rfc822re$/so && $s =~ m/^$rfc822_char*$/; } # validlist: In scalar context, returns true if the parameter is an RFC822 # valid list of addresses. # # In list context, returns an empty list on failure (an invalid # address was found); otherwise a list whose first element is the # number of addresses found and whose remaining elements are the # addresses. This is needed to disambiguate failure (invalid) # from success with no addresses found, because an empty string is # a valid list. sub rfc822_validlist ($) { my $s = rfc822_strip_comments(shift); if (!$rfc822re) { $rfc822re = make_rfc822re(); } # * null list items are valid according to the RFC # * the '1' business is to aid in distinguishing failure from no results my @r; if ($s =~ m/^(?:$rfc822re)?(?:,(?:$rfc822re)?)*$/so && $s =~ m/^$rfc822_char*$/) { while ($s =~ m/(?:^|,$rfc822_lwsp*)($rfc822re)/gos) { push @r, $1; } return wantarray ? (scalar(@r), @r) : 1; } else { return wantarray ? () : 0; } }