5 # dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] --ssh
6 # dgit-repos-server DISTRO DISTRO-DIR AUTH-SPEC [<settings>] --cron
8 # --repos=GIT-REPOS-DIR default DISTRO-DIR/repos/
9 # --suites=SUITES-FILE default DISTRO-DIR/suites
10 # --policy-hook=POLICY-HOOK default DISTRO-DIR/policy-hook
11 # --dgit-live=DGIT-LIVE-DIR default DISTRO-DIR/dgit-live
12 # (DISTRO-DIR is not used other than as default)
14 # .../dgit-repos-server --pre-receive-hook PACKAGE
16 # Invoked as the ssh restricted command
18 # Works like git-receive-pack
20 # SUITES is the name of a file which lists the permissible suites
21 # one per line (#-comments and blank lines ignored)
23 # AUTH-SPEC is a :-separated list of
24 # KEYRING.GPG,AUTH-SPEC
25 # where AUTH-SPEC is one of
28 # (With --cron AUTH-SPEC is not used and may be the empty string.)
31 $SIG{__WARN__} = sub { die $_[0]; };
33 # DGIT-REPOS-DIR contains:
34 # git tree (or other object) lock (in acquisition order, outer first)
36 # _tmp/PACKAGE_prospective ! } SAME.lock, held during receive-pack
38 # _tmp/PACKAGE_incoming$$ ! } SAME.lock, held during receive-pack
39 # _tmp/PACKAGE_incoming$$_fresh ! }
41 # PACKAGE.git } PACKAGE.git.lock
42 # PACKAGE_garbage } (also covers executions of
43 # PACKAGE_garbage-old } policy hook script for PACKAGE)
44 # PACKAGE_garbage-tmp }
45 # policy* } (for policy hook script, covered by
46 # } lock only when invoked for a package)
48 # leaf locks, held during brief operaton only:
53 # _template } SAME.lock
55 # locks marked ! may be held during client data transfer
57 # What we do on push is this:
58 # - extract the destination repo name
59 # - make a hardlink clone of the destination repo
60 # - provide the destination with a stunt pre-receive hook
61 # - run actual git-receive-pack with that new destination
62 # as a result of this the stunt pre-receive hook runs; it does this:
63 # + understand what refs we are allegedly updating and
64 # check some correspondences:
65 # * we are updating only refs/tags/debian/* and refs/dgit/*
66 # * and only one of each
67 # * and the tag does not already exist
69 # * recover the suite name from the destination refs/dgit/ ref
70 # + disassemble the signed tag into its various fields and signature
72 # * parsing the first line of the tag message to recover
73 # the package name, version and suite
74 # * checking that the package name corresponds to the dest repo name
75 # * checking that the suite name is as recovered above
76 # + verify the signature on the signed tag
77 # and if necessary check that the keyid and package are listed in dm.txt
78 # + check various correspondences:
79 # * the signed tag must refer to a commit
80 # * the signed tag commit must be the refs/dgit value
81 # * the name in the signed tag must correspond to its ref name
82 # * the tag name must be debian/<version> (massaged as needed)
83 # * the suite is one of those permitted
84 # * the signed tag has a suitable name
85 # * run the "push" policy hook
86 # * replay prevention for --deliberately-not-fast-forward
87 # * check the commit is a fast forward
88 # * handle a request from the policy hook for a fresh repo
89 # + push the signed tag and new dgit branch to the actual repo
91 # If the destination repo does not already exist, we need to make
92 # sure that we create it reasonably atomically, and also that
93 # we don't every have a destination repo containing no refs at all
94 # (because such a thing causes git-fetch-pack to barf). So then we
95 # do as above, except:
96 # - before starting, we take out our own lock for the destination repo
97 # - we create a prospective new destination repo by making a copy
99 # - we use the prospective new destination repo instead of the
100 # actual new destination repo (since the latter doesn't exist)
101 # - after git-receive-pack exits, we
102 # + check that the prospective repo contains a tag and head
103 # + rename the prospective destination repo into place
106 # - We are crash-only
107 # - Temporary working trees and their locks are cleaned up
108 # opportunistically by a program which tries to take each lock and
109 # if successful deletes both the tree and the lockfile
110 # - Prospective working trees and their locks are cleaned up by
111 # a program which tries to take each lock and if successful
112 # deletes any prospective working tree and the lock (but not
113 # of course any actual tree)
114 # - It is forbidden to _remove_ the lockfile without removing
115 # the corresponding temporary tree, as the lockfile is also
116 # a stampfile whose presence indicates that there may be
119 # Policy hook script is invoked like this:
120 # POLICY-HOOK-SCRIPT DISTRO DGIT-REPOS-DIR DGIT-LIVE-DIR ACTION...
122 # POLICY-HOOK-SCRIPT ... check-list [...]
123 # POLICY-HOOK-SCRIPT ... check-package PACKAGE [...]
124 # POLICY-HOOK-SCRIPT ... push PACKAGE \
125 # VERSION SUITE TAGNAME DELIBERATELIES [...]
126 # POLICY-HOOK-SCRIPT ... push-confirm PACKAGE \
127 # VERSION SUITE TAGNAME DELIBERATELIES FRESH-REPO|'' [...]
129 # Exit status is a bitmask. Bit weight constants are defined in Dgit.pm.
131 # suppress dgit-repos-server's fast-forward check ("push" only)
133 # blow away repo right away (ie, as if before push or fetch)
134 # ("check-package" and "push" only)
135 # any unexpected bits mean failure, and then known set bits are ignored
136 # if no unexpected bits set, operation continues (subject to meaning
137 # of any expected bits set). So, eg, exit 0 means "continue normally"
138 # and would be appropriate for an unknown action.
140 # cwd for push and push-confirm is a temporary repo where the
141 # to-be-pushed objects have been received; TAGNAME is the
144 # FRESH-REPO is '' iff the repo for this package already existed, or
145 # the pathname of the newly-created repo which will be renamed into
146 # place if everything goes well. (NB that this is generally not the
147 # same repo as the cwd, because the objects are first received into a
148 # temporary repo so they can be examined.)
150 # if push requested FRESHREPO, push-confirm happens in said fresh repo
151 # and FRESH-REPO is guaranteed not to be ''.
153 # policy hook for a particular package will be invoked only once at
154 # a time - (see comments about DGIT-REPOS-DIR, above)
156 # check-list and check-package are invoked via the --cron option.
157 # First, without any locking, check-list is called. It should produce
158 # a list of package names (one per line). Then check-package will be
159 # invoked for each named package, in each case after taking an
162 # If policy hook wants to run dgit (or something else in the dgit
163 # package), it should use DGIT-LIVE-DIR/dgit (etc.)
167 use Fcntl qw(:flock);
168 use File::Path qw(rmtree);
169 use File::Temp qw(tempfile);
171 use Debian::Dgit qw(:DEFAULT :policyflags);
191 #----- utilities -----
193 sub realdestrepo () { "$dgitrepos/$package.git"; }
195 sub acquirelock ($$) {
196 my ($lock, $must) = @_;
198 printdebug sprintf "locking %s %d\n", $lock, $must;
201 $fh = new IO::File $lock, ">" or die "open $lock: $!";
202 my $ok = flock $fh, $must ? LOCK_EX : (LOCK_EX|LOCK_NB);
204 die "flock $lock: $!" if $must;
205 printdebug " locking $lock failed\n";
208 next unless stat_exists $lock;
209 my $want = (stat _)[1];
211 my $got = (stat _)[1];
212 last if $got == $want;
217 sub acquirermtree ($$) {
218 my ($tree, $must) = @_;
219 my $fh = acquirelock("$tree.lock", $must);
227 sub locksometree ($) {
229 acquirelock("$tree.lock", 1);
232 sub lockrealtree () {
233 locksometree(realdestrepo);
237 my $tmpdir = "$dgitrepos/_tmp";
238 return if mkdir $tmpdir;
239 return if $! == EEXIST;
243 sub recorderror ($) {
245 my $w = $ENV{'DGIT_DRS_WORK'}; # we are in stunthook
248 open ERR, ">", "$w/drs-error" or die $!;
249 print ERR $why, "\n" or die $!;
258 recorderror "reject: $why";
259 die "dgit-repos-server: reject: $why\n";
266 die "@_ $? $!" if $r;
270 my ($policyallowbits, @polargs) = @_;
271 # => ($exitstatuspolicybitmap);
272 die if $policyallowbits & ~0x3e;
273 my @cmd = ($policyhook,$distro,$dgitrepos,$dgitlive,@polargs);
276 die "system: $!" if $r < 0;
277 die "hook (@cmd) failed ($?)" if $r & ~($policyallowbits << 8);
278 printdebug sprintf "hook (%s) => %#x\n", "@polargs", $r;
282 sub mkemptyrepo ($$) {
283 my ($dir,$sharedperm) = @_;
284 runcmd qw(git init --bare --quiet), "--shared=$sharedperm", $dir;
287 sub mkrepo_fromtemplate ($) {
289 my $template = "$dgitrepos/_template";
290 locksometree($template);
291 printdebug "copy template $template -> $dir\n";
292 my $r = system qw(cp -a --), $template, $dir;
293 !$r or die "create new repo $dir failed: $r $!";
296 sub movetogarbage () {
297 # realdestrepo must have been locked
298 my $garbagerepo = "$dgitrepos/${package}_garbage";
299 # We arrange to always keep at least one old tree, for anti-rewind
300 # purposes (and, I guess, recovery from mistakes). This is either
301 # $garbage or $garbage-old.
302 if (stat_exists "$garbagerepo") {
303 rmtree "$garbagerepo-tmp";
304 if (rename "$garbagerepo-old", "$garbagerepo-tmp") {
305 rmtree "$garbagerepo-tmp";
307 die "$garbagerepo $!" unless $!==ENOENT;
309 rename "$garbagerepo", "$garbagerepo-old" or die "$garbagerepo $!";
311 rename realdestrepo, $garbagerepo
313 or die "$garbagerepo $!";
316 sub policy_checkpackage () {
317 my $lfh = lockrealtree();
319 $policy = policyhook(FRESHREPO,'check-package',$package);
320 if ($policy & FRESHREPO) {
327 #----- git-receive-pack -----
329 sub fixmissing__git_receive_pack () {
331 $destrepo = "$dgitrepos/_tmp/${package}_prospective";
332 acquirermtree($destrepo, 1);
333 mkrepo_fromtemplate($destrepo);
336 sub makeworkingclone () {
338 $workrepo = "$dgitrepos/_tmp/${package}_incoming$$";
339 acquirermtree($workrepo, 1);
340 my $lfh = lockrealtree();
341 runcmd qw(git clone -l -q --mirror), $destrepo, $workrepo;
343 rmtree "${workrepo}_fresh";
346 sub setupstunthook () {
347 my $prerecv = "$workrepo/hooks/pre-receive";
348 my $fh = new IO::File $prerecv, O_WRONLY|O_CREAT|O_TRUNC, 0777
349 or die "$prerecv: $!";
350 print $fh <<END or die "$prerecv: $!";
353 exec $0 --pre-receive-hook $package
355 close $fh or die "$prerecv: $!";
356 $ENV{'DGIT_DRS_WORK'}= $workrepo;
357 $ENV{'DGIT_DRS_DEST'}= $destrepo;
358 printdebug " stunt hook set up $prerecv\n";
361 sub dealwithfreshrepo () {
362 my $freshrepo = "${workrepo}_fresh";
363 return unless stat_exists $freshrepo;
364 $destrepo = $freshrepo;
367 sub maybeinstallprospective () {
368 return if $destrepo eq realdestrepo;
370 if (open REJ, "<", "$workrepo/drs-error") {
373 REJ->error and die $!;
377 $!==&ENOENT or die $!;
380 printdebug " show-ref ($destrepo) ...\n";
382 my $child = open SR, "-|";
383 defined $child or die $!;
385 chdir $destrepo or die $!;
386 exec qw(git show-ref);
389 my %got = qw(tag 0 head 0);
392 printdebug " show-refs| $_\n";
393 s/^\S*[1-9a-f]\S* (\S+)$/$1/ or die;
395 m{^refs/tags/} ? 'tag' :
396 m{^refs/dgit/} ? 'head' :
400 $!=0; $?=0; close SR or $?==256 or die "$? $!";
402 printdebug "installprospective ?\n";
403 die Dumper(\%got)." -- missing refs in new repo"
404 if grep { !$_ } values %got;
408 if ($destrepo eq "${workrepo}_fresh") {
412 printdebug "install $destrepo => ".realdestrepo."\n";
413 rename $destrepo, realdestrepo or die $!;
414 remove "$destrepo.lock" or die $!;
417 sub main__git_receive_pack () {
420 runcmd qw(git receive-pack), $workrepo;
422 maybeinstallprospective();
425 #----- stunt post-receive hook -----
427 our ($tagname, $tagval, $suite, $oldcommit, $commit);
428 our ($version, %tagh);
431 printdebug " updates ...\n";
434 printdebug " upd.| $_\n";
435 m/^(\S+) (\S+) (\S+)$/ or die "$_ ?";
436 my ($old, $sha1, $refname) = ($1, $2, $3);
437 if ($refname =~ m{^refs/tags/(?=debian/)}) {
438 reject "pushing multiple tags!" if defined $tagname;
441 reject "tag $tagname already exists -".
442 " not replacing previously-pushed version"
444 } elsif ($refname =~ m{^refs/dgit/}) {
445 reject "pushing multiple heads!" if defined $suite;
450 reject "pushing unexpected ref!";
453 STDIN->error and die $!;
455 reject "push is missing tag ref update" unless defined $tagname;
456 reject "push is missing head ref update" unless defined $suite;
457 printdebug " updates ok.\n";
461 printdebug " parsetag...\n";
462 open PT, ">dgit-tmp/plaintext" or die $!;
463 open DS, ">dgit-tmp/plaintext.asc" or die $!;
464 open T, "-|", qw(git cat-file tag), $tagval or die $!;
466 $!=0; $_=<T>; defined or die $!;
468 if (m/^(\S+) (.*)/) {
469 push @{ $tagh{$1} }, $2;
476 $!=0; $_=<T>; defined or die $!;
477 m/^($package_re) release (\S+) for \S+ \((\S+)\) \[dgit\]$/ or
478 reject "tag message not in expected format";
480 die unless $1 eq $package;
482 die "$3 != $suite " unless $3 eq $suite;
486 print PT $copyl or die $!;
487 $!=0; $_=<T>; defined or die "missing signature? $!";
489 if (m/^\[dgit ([^"].*)\]$/) { # [dgit "something"] is for future
492 if (s/^distro\=(\S+) //) {
493 die "$1 != $distro" unless $1 eq $distro;
494 } elsif (s/^(--deliberately-$package_re) //) {
495 push @deliberatelies, $1;
496 } elsif (s/^supersede:(\S+)=(\w+) //) {
497 die "supersede $1 twice" if defined $supersedes{$1};
498 $supersedes{$1} = $2;
499 } elsif (s/^[-+.=0-9a-z]\S* //) {
501 die "unknown dgit info in tag ($_)";
506 last if m/^-----BEGIN PGP/;
517 printdebug " parsetag ok.\n";
520 sub checksig_keyring ($) {
521 my ($keyringfile) = @_;
522 # returns primary-keyid if signed by a key in this keyring
524 # or dies on other errors
528 printdebug " checksig keyring $keyringfile...\n";
530 our @cmd = (qw(gpgv --status-fd=1 --keyring),
532 qw(dgit-tmp/plaintext.asc dgit-tmp/plaintext));
539 next unless s/^\[GNUPG:\] //;
541 printdebug " checksig| $_\n";
542 my @l = split / /, $_;
543 if ($l[0] eq 'NO_PUBKEY') {
545 } elsif ($l[0] eq 'VALIDSIG') {
547 $sigtype eq '00' or reject "signature is not of type 00!";
549 die unless defined $ok;
555 printdebug sprintf " checksig ok=%d\n", !!$ok;
560 sub dm_txt_check ($$) {
561 my ($keyid, $dmtxtfn) = @_;
562 printdebug " dm_txt_check $keyid $dmtxtfn\n";
563 open DT, '<', $dmtxtfn or die "$dmtxtfn $!";
565 m/^fingerprint:\s+$keyid$/oi
567 if (s/^allow:/ /i..0) {
570 or reject "key $keyid missing Allow section in permissions!";
575 or reject "package $package not allowed for key $keyid";
580 printdebug " dm_txt_check allow| $_\n";
581 foreach my $p (split /\s+/) {
582 if ($p eq $package) {
584 printdebug " dm_txt_check ok\n";
589 DT->error and die $!;
591 reject "key $keyid not in permissions list although in keyring!";
595 foreach my $kas (split /:/, $keyrings) {
596 printdebug "verifytag $kas...\n";
597 $kas =~ s/^([^,]+),// or die;
598 my $keyid = checksig_keyring $1;
599 if (defined $keyid) {
600 if ($kas =~ m/^a$/) {
601 printdebug "verifytag a ok\n";
603 } elsif ($kas =~ m/^m([^,]+)$/) {
604 dm_txt_check($keyid, $1);
605 printdebug "verifytag m ok\n";
612 reject "key not found in keyrings";
616 printdebug "checksuite ($suitesfile)\n";
617 open SUITES, "<", $suitesfile or die $!;
623 return if $_ eq $suite;
625 die $! if SUITES->error;
626 reject "unknown suite";
629 sub checktagnoreplay () {
630 # We check that the signed tag mentions the name and value of
631 # (a) in the case of FRESHREPO all tags in the repo;
632 # (b) in the case of just NOFFCHECK all tags referring to
633 # the current head for the suite (there must be at least one).
634 # This prevents a replay attack using an earlier signed tag.
635 return unless $policy & (FRESHREPO|NOFFCHECK);
637 my $garbagerepo = "$dgitrepos/${package}_garbage";
641 foreach my $garb ("$garbagerepo", "$garbagerepo-old") {
642 if (stat_exists $garb) {
643 $ENV{GIT_DIR} = $garb;
647 if (!defined $ENV{GIT_DIR}) {
648 # Nothing to overwrite so the FRESHREPO and NOFFCHECK were
649 # pointless. Oh well.
650 printdebug "checktagnoreplay - no garbage, ok\n";
655 if (!($policy & FRESHREPO)) {
656 my $branch = server_branch($suite);
658 `git for-each-ref --format='%(objectname)' '[r]efs/$branch'`;
659 defined or die "$branch $? $!";
660 $? and die "$branch $?";
662 # No such branch - NOFFCHECK was unnecessary. Oh well.
663 printdebug "checktagnoreplay - not FRESHREPO, new branch, ok\n";
666 m/^(\w+)\n$/ or die "$branch $_ ?";
668 printdebug "checktagnoreplay - not FRESHREPO,".
669 " checking for overwriting refs/$branch=$onlyreferring\n";
674 git_for_each_tag_referring($onlyreferring, sub {
675 my ($objid,$fullrefname,$tagname) = @_;
676 printdebug "checktagnoreplay - overwriting $fullrefname=$objid\n";
677 my $supers = $supersedes{$fullrefname};
678 if (!defined $supers) {
679 push @problems, "does not supersede $fullrefname";
680 } elsif ($supers ne $objid) {
682 "supersedes $fullrefname=$supers but previously $fullrefname=$objid";
689 reject "replay attack prevention check failed:".
690 " signed tag for $version: ".
691 join("; ", @problems).
694 printdebug "checktagnoreply - all ok\n"
699 my $vals = $tagh{$tag};
700 reject "missing header $tag in signed tag object" unless $vals;
701 reject "multiple headers $tag in signed tag object" unless @$vals == 1;
706 printdebug "checks\n";
708 tagh1('type') eq 'commit' or reject "tag refers to wrong kind of object";
709 tagh1('object') eq $commit or reject "tag refers to wrong commit";
710 tagh1('tag') eq $tagname or reject "tag name in tag is wrong";
715 printdebug "translated version $v\n";
716 $tagname eq "debian/$v" or die;
720 my @policy_args = ($package,$version,$suite,$tagname,
721 join(",",@deliberatelies));
722 $policy = policyhook(NOFFCHECK|FRESHREPO, 'push', @policy_args);
727 # check that our ref is being fast-forwarded
728 printdebug "oldcommit $oldcommit\n";
729 if (!($policy & NOFFCHECK) && $oldcommit =~ m/[^0]/) {
730 $?=0; $!=0; my $mb = `git merge-base $commit $oldcommit`;
732 $mb eq $oldcommit or reject "not fast forward on dgit branch";
735 if ($policy & FRESHREPO) {
736 # This is troublesome. We have been asked by the policy hook
737 # to receive the push into a fresh repo. But of course we
738 # have actually already mostly received the push into the working
739 # repo. (This is unavoidable because the instruction to use a new
740 # repo comes ultimately from the signed tag for the dgit push,
741 # which has to have been received into some repo.)
743 # So what we do is generate a fresh working repo right now and
744 # push the head and tag into it. The presence of this fresh
745 # working repo is detected by the parent, which responds by
746 # making a fresh master repo from the template.
748 $destrepo = "${workrepo}_fresh"; # workrepo lock covers
749 mkrepo_fromtemplate $destrepo;
752 my $willinstall = ($destrepo eq realdestrepo ? '' : $destrepo);
753 policyhook(0, 'push-confirm', @policy_args, $willinstall);
757 my @cmd = (qw(git send-pack), $destrepo);
758 push @cmd, qw(--force) if $policy & NOFFCHECK;
759 push @cmd, "$commit:refs/dgit/$suite",
760 "$tagval:refs/tags/$tagname";
764 !$r or die "onward push to $destrepo failed: $r $!";
768 printdebug "stunthook in $workrepo\n";
769 chdir $workrepo or die "chdir $workrepo: $!";
770 mkdir "dgit-tmp" or $!==EEXIST or die $!;
776 printdebug "stunthook done.\n";
779 #----- git-upload-pack -----
781 sub fixmissing__git_upload_pack () {
782 $destrepo = "$dgitrepos/_empty";
783 my $lfh = locksometree($destrepo);
784 return if stat_exists $destrepo;
785 rmtree "$destrepo.new";
786 mkemptyrepo "$destrepo.new", "0644";
787 rename "$destrepo.new", $destrepo or die $!;
788 unlink "$destrepo.lock" or die $!;
792 sub main__git_upload_pack () {
793 my $lfh = locksometree($destrepo);
794 printdebug "git-upload-pack in $destrepo\n";
795 chdir $destrepo or die "$destrepo: $!";
797 runcmd qw(git upload-pack), ".";
800 #----- arg parsing and main program -----
810 # keys are used for DGIT_DRS_XXX too
811 'repos' => \$dgitrepos,
812 'suites' => \$suitesfile,
813 'policy-hook' => \$policyhook,
814 'dgit-live' => \$dgitlive,
817 our @hookenvs = qw(distro suitesfile policyhook dgitlive keyrings dgitrepos);
819 # workrepo and destrepo handled ad-hoc
824 my $cmd = $ENV{'SSH_ORIGINAL_COMMAND'};
834 or reject "command string not understood";
840 my $mainfunc = $main::{"main__$funcn"};
842 reject "unknown method" unless $mainfunc;
844 policy_checkpackage();
846 if (stat_exists realdestrepo) {
847 $destrepo = realdestrepo;
849 printdebug " fixmissing $funcn\n";
850 my $fixfunc = $main::{"fixmissing__$funcn"};
854 printdebug " running main $funcn\n";
861 my $listfh = tempfile();
862 open STDOUT, ">&", $listfh or die $!;
863 policyhook(0,'check-list');
864 open STDOUT, ">&STDERR" or die $!;
866 seek $listfh, 0, 0 or die $!;
871 die unless m/^($package_re)$/;
874 policy_checkpackage();
876 die $! if $listfh->error;
879 sub parseargsdispatch () {
882 delete $ENV{'GIT_DIR'}; # if not run via ssh, our parent git process
883 delete $ENV{'GIT_PREFIX'}; # sets these and they mess things up
885 if ($ENV{'DGIT_DRS_DEBUG'}) {
889 if ($ARGV[0] eq '--pre-receive-hook') {
892 printdebug "in stunthook @ARGV\n";
893 foreach my $k (sort keys %ENV) {
894 printdebug "$k=$ENV{$k}\n" if $k =~ m/^DGIT/;
899 $package = shift @ARGV;
900 ${ $main::{$_} } = $ENV{"DGIT_DRS_\U$_"} foreach @hookenvs;
901 defined($workrepo = $ENV{'DGIT_DRS_WORK'}) or die;
902 defined($destrepo = $ENV{'DGIT_DRS_DEST'}) or die;
903 open STDOUT, ">&STDERR" or die $!;
908 recorderror "$@" or die;
914 $distro = $ENV{'DGIT_DRS_DISTRO'} = argval();
915 my $distrodir = argval();
916 $keyrings = $ENV{'DGIT_DRS_KEYRINGS'} = argval();
918 foreach my $dk (keys %indistrodir) {
919 ${ $indistrodir{$dk} } = "$distrodir/$dk";
922 while (@ARGV && $ARGV[0] =~ m/^--([-0-9a-z]+)=/ && $indistrodir{$1}) {
923 ${ $indistrodir{$1} } = $'; #';
927 $ENV{"DGIT_DRS_\U$_"} = ${ $main::{$_} } foreach @hookenvs;
931 my $mode = shift @ARGV;
932 die unless $mode =~ m/^--(\w+)$/;
933 my $fn = ${*::}{"mode_$1"};
939 while (my $fh = pop @lockfhs) { close $fh; }
944 if (!chdir "$dgitrepos/_tmp") {
945 $!==ENOENT or die $!;
948 foreach my $lf (<*.lock>) {
950 $tree =~ s/\.lock$//;
951 next unless acquirermtree($tree, 0);
952 remove $lf or warn $!;