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 (shellquote @_)." $? $!" 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 $r < 0;
277 die "hook (".(shellquote @cmd).") failed ($?)"
278 if $r & ~($policyallowbits << 8);
279 printdebug sprintf "hook (%s) => %#x\n", (shellquote @polargs), $r;
283 sub mkemptyrepo ($$) {
284 my ($dir,$sharedperm) = @_;
285 runcmd qw(git init --bare --quiet), "--shared=$sharedperm", $dir;
288 sub mkrepo_fromtemplate ($) {
290 my $template = "$dgitrepos/_template";
291 locksometree($template);
292 printdebug "copy template $template -> $dir\n";
293 my $r = system qw(cp -a --), $template, $dir;
294 !$r or die "create new repo $dir failed: $r $!";
297 sub movetogarbage () {
298 # realdestrepo must have been locked
299 my $garbagerepo = "$dgitrepos/${package}_garbage";
300 # We arrange to always keep at least one old tree, for anti-rewind
301 # purposes (and, I guess, recovery from mistakes). This is either
302 # $garbage or $garbage-old.
303 if (stat_exists "$garbagerepo") {
304 rmtree "$garbagerepo-tmp";
305 if (rename "$garbagerepo-old", "$garbagerepo-tmp") {
306 rmtree "$garbagerepo-tmp";
308 die "$garbagerepo $!" unless $!==ENOENT;
310 rename "$garbagerepo", "$garbagerepo-old" or die "$garbagerepo $!";
312 rename realdestrepo, $garbagerepo
314 or die "$garbagerepo $!";
317 sub policy_checkpackage () {
318 my $lfh = lockrealtree();
320 $policy = policyhook(FRESHREPO,'check-package',$package);
321 if ($policy & FRESHREPO) {
328 #----- git-receive-pack -----
330 sub fixmissing__git_receive_pack () {
332 $destrepo = "$dgitrepos/_tmp/${package}_prospective";
333 acquirermtree($destrepo, 1);
334 mkrepo_fromtemplate($destrepo);
337 sub makeworkingclone () {
339 $workrepo = "$dgitrepos/_tmp/${package}_incoming$$";
340 acquirermtree($workrepo, 1);
341 my $lfh = lockrealtree();
342 runcmd qw(git clone -l -q --mirror), $destrepo, $workrepo;
344 rmtree "${workrepo}_fresh";
347 sub setupstunthook () {
348 my $prerecv = "$workrepo/hooks/pre-receive";
349 my $fh = new IO::File $prerecv, O_WRONLY|O_CREAT|O_TRUNC, 0777
350 or die "$prerecv: $!";
351 print $fh <<END or die "$prerecv: $!";
354 exec $0 --pre-receive-hook $package
356 close $fh or die "$prerecv: $!";
357 $ENV{'DGIT_DRS_WORK'}= $workrepo;
358 $ENV{'DGIT_DRS_DEST'}= $destrepo;
359 printdebug " stunt hook set up $prerecv\n";
362 sub dealwithfreshrepo () {
363 my $freshrepo = "${workrepo}_fresh";
364 return unless stat_exists $freshrepo;
365 $destrepo = $freshrepo;
368 sub maybeinstallprospective () {
369 return if $destrepo eq realdestrepo;
371 if (open REJ, "<", "$workrepo/drs-error") {
374 REJ->error and die $!;
378 $!==&ENOENT or die $!;
381 printdebug " show-ref ($destrepo) ...\n";
383 my $child = open SR, "-|";
384 defined $child or die $!;
386 chdir $destrepo or die $!;
387 exec qw(git show-ref);
390 my %got = qw(tag 0 head 0);
393 printdebug " show-refs| $_\n";
394 s/^\S*[1-9a-f]\S* (\S+)$/$1/ or die;
396 m{^refs/tags/} ? 'tag' :
397 m{^refs/dgit/} ? 'head' :
401 $!=0; $?=0; close SR or $?==256 or die "$? $!";
403 printdebug "installprospective ?\n";
404 die Dumper(\%got)." -- missing refs in new repo"
405 if grep { !$_ } values %got;
409 if ($destrepo eq "${workrepo}_fresh") {
413 printdebug "install $destrepo => ".realdestrepo."\n";
414 rename $destrepo, realdestrepo or die $!;
415 remove "$destrepo.lock" or die $!;
418 sub main__git_receive_pack () {
421 runcmd qw(git receive-pack), $workrepo;
423 maybeinstallprospective();
426 #----- stunt post-receive hook -----
428 our ($tagname, $tagval, $suite, $oldcommit, $commit);
429 our ($version, %tagh);
432 printdebug " updates ...\n";
435 printdebug " upd.| $_\n";
436 m/^(\S+) (\S+) (\S+)$/ or die "$_ ?";
437 my ($old, $sha1, $refname) = ($1, $2, $3);
438 if ($refname =~ m{^refs/tags/(?=debian/)}) {
439 reject "pushing multiple tags!" if defined $tagname;
442 reject "tag $tagname already exists -".
443 " not replacing previously-pushed version"
445 } elsif ($refname =~ m{^refs/dgit/}) {
446 reject "pushing multiple heads!" if defined $suite;
451 reject "pushing unexpected ref!";
454 STDIN->error and die $!;
456 reject "push is missing tag ref update" unless defined $tagname;
457 reject "push is missing head ref update" unless defined $suite;
458 printdebug " updates ok.\n";
462 printdebug " parsetag...\n";
463 open PT, ">dgit-tmp/plaintext" or die $!;
464 open DS, ">dgit-tmp/plaintext.asc" or die $!;
465 open T, "-|", qw(git cat-file tag), $tagval or die $!;
467 $!=0; $_=<T>; defined or die $!;
469 if (m/^(\S+) (.*)/) {
470 push @{ $tagh{$1} }, $2;
477 $!=0; $_=<T>; defined or die $!;
478 m/^($package_re) release (\S+) for \S+ \((\S+)\) \[dgit\]$/ or
479 reject "tag message not in expected format";
481 die unless $1 eq $package;
483 die "$3 != $suite " unless $3 eq $suite;
487 print PT $copyl or die $!;
488 $!=0; $_=<T>; defined or die "missing signature? $!";
490 if (m/^\[dgit ([^"].*)\]$/) { # [dgit "something"] is for future
493 if (s/^distro\=(\S+) //) {
494 die "$1 != $distro" unless $1 eq $distro;
495 } elsif (s/^(--deliberately-$package_re) //) {
496 push @deliberatelies, $1;
497 } elsif (s/^supersede:(\S+)=(\w+) //) {
498 die "supersede $1 twice" if defined $supersedes{$1};
499 $supersedes{$1} = $2;
500 } elsif (s/^[-+.=0-9a-z]\S* //) {
502 die "unknown dgit info in tag ($_)";
507 last if m/^-----BEGIN PGP/;
518 printdebug " parsetag ok.\n";
521 sub checksig_keyring ($) {
522 my ($keyringfile) = @_;
523 # returns primary-keyid if signed by a key in this keyring
525 # or dies on other errors
529 printdebug " checksig keyring $keyringfile...\n";
531 our @cmd = (qw(gpgv --status-fd=1 --keyring),
533 qw(dgit-tmp/plaintext.asc dgit-tmp/plaintext));
540 next unless s/^\[GNUPG:\] //;
542 printdebug " checksig| $_\n";
543 my @l = split / /, $_;
544 if ($l[0] eq 'NO_PUBKEY') {
546 } elsif ($l[0] eq 'VALIDSIG') {
548 $sigtype eq '00' or reject "signature is not of type 00!";
550 die unless defined $ok;
556 printdebug sprintf " checksig ok=%d\n", !!$ok;
561 sub dm_txt_check ($$) {
562 my ($keyid, $dmtxtfn) = @_;
563 printdebug " dm_txt_check $keyid $dmtxtfn\n";
564 open DT, '<', $dmtxtfn or die "$dmtxtfn $!";
566 m/^fingerprint:\s+$keyid$/oi
568 if (s/^allow:/ /i..0) {
571 or reject "key $keyid missing Allow section in permissions!";
576 or reject "package $package not allowed for key $keyid";
581 printdebug " dm_txt_check allow| $_\n";
582 foreach my $p (split /\s+/) {
583 if ($p eq $package) {
585 printdebug " dm_txt_check ok\n";
590 DT->error and die $!;
592 reject "key $keyid not in permissions list although in keyring!";
596 foreach my $kas (split /:/, $keyrings) {
597 printdebug "verifytag $kas...\n";
598 $kas =~ s/^([^,]+),// or die;
599 my $keyid = checksig_keyring $1;
600 if (defined $keyid) {
601 if ($kas =~ m/^a$/) {
602 printdebug "verifytag a ok\n";
604 } elsif ($kas =~ m/^m([^,]+)$/) {
605 dm_txt_check($keyid, $1);
606 printdebug "verifytag m ok\n";
613 reject "key not found in keyrings";
617 printdebug "checksuite ($suitesfile)\n";
618 open SUITES, "<", $suitesfile or die $!;
624 return if $_ eq $suite;
626 die $! if SUITES->error;
627 reject "unknown suite";
630 sub checktagnoreplay () {
631 # We check that the signed tag mentions the name and value of
632 # (a) in the case of FRESHREPO all tags in the repo;
633 # (b) in the case of just NOFFCHECK all tags referring to
634 # the current head for the suite (there must be at least one).
635 # This prevents a replay attack using an earlier signed tag.
636 return unless $policy & (FRESHREPO|NOFFCHECK);
638 my $garbagerepo = "$dgitrepos/${package}_garbage";
642 foreach my $garb ("$garbagerepo", "$garbagerepo-old") {
643 if (stat_exists $garb) {
644 $ENV{GIT_DIR} = $garb;
648 if (!defined $ENV{GIT_DIR}) {
649 # Nothing to overwrite so the FRESHREPO and NOFFCHECK were
650 # pointless. Oh well.
651 printdebug "checktagnoreplay - no garbage, ok\n";
656 if (!($policy & FRESHREPO)) {
657 my $branch = server_branch($suite);
659 `git for-each-ref --format='%(objectname)' '[r]efs/$branch'`;
660 defined or die "$branch $? $!";
661 $? and die "$branch $?";
663 # No such branch - NOFFCHECK was unnecessary. Oh well.
664 printdebug "checktagnoreplay - not FRESHREPO, new branch, ok\n";
667 m/^(\w+)\n$/ or die "$branch $_ ?";
669 printdebug "checktagnoreplay - not FRESHREPO,".
670 " checking for overwriting refs/$branch=$onlyreferring\n";
675 git_for_each_tag_referring($onlyreferring, sub {
676 my ($objid,$fullrefname,$tagname) = @_;
677 printdebug "checktagnoreplay - overwriting $fullrefname=$objid\n";
678 my $supers = $supersedes{$fullrefname};
679 if (!defined $supers) {
680 push @problems, "does not supersede $fullrefname";
681 } elsif ($supers ne $objid) {
683 "supersedes $fullrefname=$supers but previously $fullrefname=$objid";
690 reject "replay attack prevention check failed:".
691 " signed tag for $version: ".
692 join("; ", @problems).
695 printdebug "checktagnoreply - all ok\n"
700 my $vals = $tagh{$tag};
701 reject "missing header $tag in signed tag object" unless $vals;
702 reject "multiple headers $tag in signed tag object" unless @$vals == 1;
707 printdebug "checks\n";
709 tagh1('type') eq 'commit' or reject "tag refers to wrong kind of object";
710 tagh1('object') eq $commit or reject "tag refers to wrong commit";
711 tagh1('tag') eq $tagname or reject "tag name in tag is wrong";
716 printdebug "translated version $v\n";
717 $tagname eq "debian/$v" or die;
721 my @policy_args = ($package,$version,$suite,$tagname,
722 join(",",@deliberatelies));
723 $policy = policyhook(NOFFCHECK|FRESHREPO, 'push', @policy_args);
728 # check that our ref is being fast-forwarded
729 printdebug "oldcommit $oldcommit\n";
730 if (!($policy & NOFFCHECK) && $oldcommit =~ m/[^0]/) {
731 $?=0; $!=0; my $mb = `git merge-base $commit $oldcommit`;
733 $mb eq $oldcommit or reject "not fast forward on dgit branch";
736 if ($policy & FRESHREPO) {
737 # This is troublesome. We have been asked by the policy hook
738 # to receive the push into a fresh repo. But of course we
739 # have actually already mostly received the push into the working
740 # repo. (This is unavoidable because the instruction to use a new
741 # repo comes ultimately from the signed tag for the dgit push,
742 # which has to have been received into some repo.)
744 # So what we do is generate a fresh working repo right now and
745 # push the head and tag into it. The presence of this fresh
746 # working repo is detected by the parent, which responds by
747 # making a fresh master repo from the template.
749 $destrepo = "${workrepo}_fresh"; # workrepo lock covers
750 mkrepo_fromtemplate $destrepo;
753 my $willinstall = ($destrepo eq realdestrepo ? '' : $destrepo);
754 policyhook(0, 'push-confirm', @policy_args, $willinstall);
758 my @cmd = (qw(git send-pack), $destrepo);
759 push @cmd, qw(--force) if $policy & NOFFCHECK;
760 push @cmd, "$commit:refs/dgit/$suite",
761 "$tagval:refs/tags/$tagname";
765 !$r or die "onward push to $destrepo failed: $r $!";
769 printdebug "stunthook in $workrepo\n";
770 chdir $workrepo or die "chdir $workrepo: $!";
771 mkdir "dgit-tmp" or $!==EEXIST or die $!;
777 printdebug "stunthook done.\n";
780 #----- git-upload-pack -----
782 sub fixmissing__git_upload_pack () {
783 $destrepo = "$dgitrepos/_empty";
784 my $lfh = locksometree($destrepo);
785 return if stat_exists $destrepo;
786 rmtree "$destrepo.new";
787 mkemptyrepo "$destrepo.new", "0644";
788 rename "$destrepo.new", $destrepo or die $!;
789 unlink "$destrepo.lock" or die $!;
793 sub main__git_upload_pack () {
794 my $lfh = locksometree($destrepo);
795 printdebug "git-upload-pack in $destrepo\n";
796 chdir $destrepo or die "$destrepo: $!";
798 runcmd qw(git upload-pack), ".";
801 #----- arg parsing and main program -----
811 # keys are used for DGIT_DRS_XXX too
812 'repos' => \$dgitrepos,
813 'suites' => \$suitesfile,
814 'policy-hook' => \$policyhook,
815 'dgit-live' => \$dgitlive,
818 our @hookenvs = qw(distro suitesfile policyhook dgitlive keyrings dgitrepos);
820 # workrepo and destrepo handled ad-hoc
825 my $cmd = $ENV{'SSH_ORIGINAL_COMMAND'};
835 or reject "command string not understood";
841 my $mainfunc = $main::{"main__$funcn"};
843 reject "unknown method" unless $mainfunc;
845 policy_checkpackage();
847 if (stat_exists realdestrepo) {
848 $destrepo = realdestrepo;
850 printdebug " fixmissing $funcn\n";
851 my $fixfunc = $main::{"fixmissing__$funcn"};
855 printdebug " running main $funcn\n";
862 my $listfh = tempfile();
863 open STDOUT, ">&", $listfh or die $!;
864 policyhook(0,'check-list');
865 open STDOUT, ">&STDERR" or die $!;
867 seek $listfh, 0, 0 or die $!;
872 die unless m/^($package_re)$/;
875 policy_checkpackage();
877 die $! if $listfh->error;
880 sub parseargsdispatch () {
883 delete $ENV{'GIT_DIR'}; # if not run via ssh, our parent git process
884 delete $ENV{'GIT_PREFIX'}; # sets these and they mess things up
886 if ($ENV{'DGIT_DRS_DEBUG'}) {
890 if ($ARGV[0] eq '--pre-receive-hook') {
893 printdebug "in stunthook ".(shellquote @ARGV)."\n";
894 foreach my $k (sort keys %ENV) {
895 printdebug "$k=$ENV{$k}\n" if $k =~ m/^DGIT/;
900 $package = shift @ARGV;
901 ${ $main::{$_} } = $ENV{"DGIT_DRS_\U$_"} foreach @hookenvs;
902 defined($workrepo = $ENV{'DGIT_DRS_WORK'}) or die;
903 defined($destrepo = $ENV{'DGIT_DRS_DEST'}) or die;
904 open STDOUT, ">&STDERR" or die $!;
909 recorderror "$@" or die;
915 $distro = $ENV{'DGIT_DRS_DISTRO'} = argval();
916 my $distrodir = argval();
917 $keyrings = $ENV{'DGIT_DRS_KEYRINGS'} = argval();
919 foreach my $dk (keys %indistrodir) {
920 ${ $indistrodir{$dk} } = "$distrodir/$dk";
923 while (@ARGV && $ARGV[0] =~ m/^--([-0-9a-z]+)=/ && $indistrodir{$1}) {
924 ${ $indistrodir{$1} } = $'; #';
928 $ENV{"DGIT_DRS_\U$_"} = ${ $main::{$_} } foreach @hookenvs;
932 my $mode = shift @ARGV;
933 die unless $mode =~ m/^--(\w+)$/;
934 my $fn = ${*::}{"mode_$1"};
940 while (my $fh = pop @lockfhs) { close $fh; }
945 if (!chdir "$dgitrepos/_tmp") {
946 $!==ENOENT or die $!;
949 foreach my $lf (<*.lock>) {
951 $tree =~ s/\.lock$//;
952 next unless acquirermtree($tree, 0);
953 remove $lf or warn $!;