package urpm::orphans; use strict; use urpm::util; use urpm::msg; use urpm; # $Id: select.pm 243120 2008-07-01 12:24:34Z pixel $ my $fullname2name_re = qr/^(.*)-[^\-]*-[^\-]*\.[^\.\-]*$/; #- side-effects: none sub installed_packages_packed { my ($urpm) = @_; my $db = urpm::db_open_or_die_($urpm); my @l; $db->traverse(sub { my ($pkg) = @_; $pkg->pack_header; push @l, $pkg; }); \@l; } #- side-effects: none sub unrequested_list__file { my ($urpm) = @_; ($urpm->{env_dir} || "$urpm->{root}/var/lib/rpm") . '/installed-through-deps.list'; } #- side-effects: none sub unrequested_list { my ($urpm) = @_; +{ map { chomp; s/\s+\(.*\)$//; $_ => 1; } cat_(unrequested_list__file($urpm)) }; } #- side-effects: #- + those of _installed_req_and_unreq_and_update_unrequested_list (/var/lib/rpm/installed-through-deps.list) sub _installed_req_and_unreq { my ($urpm) = @_; my ($req, $unreq, $_unrequested) = _installed_req_and_unreq_and_update_unrequested_list($urpm); ($req, $unreq); } #- side-effects: #- + those of _installed_req_and_unreq_and_update_unrequested_list (/var/lib/rpm/installed-through-deps.list) sub _installed_and_unrequested_lists { my ($urpm) = @_; my ($pkgs, $pkgs2, $unrequested) = _installed_req_and_unreq_and_update_unrequested_list($urpm); push @$pkgs, @$pkgs2; ($pkgs, $unrequested); } #- side-effects: /var/lib/rpm/installed-through-deps.list sub _installed_req_and_unreq_and_update_unrequested_list { my ($urpm) = @_; my $pkgs = installed_packages_packed($urpm); $urpm->{debug}("reading and cleaning " . unrequested_list__file($urpm)) if $urpm->{debug}; my $unrequested = unrequested_list($urpm); my ($unreq, $req) = partition { $unrequested->{$_->name} } @$pkgs; # update the list (to filter dups and now-removed-pkgs) output_safe(unrequested_list__file($urpm), join('', sort map { $_->name . "\n" } @$unreq), ".old") if !$urpm->{env_dir}; ($req, $unreq, $unrequested); } #- returns the new "unrequested" packages #- the reason can be "required by xxx" or "suggested" #- #- side-effects: none sub _selected_unrequested { my ($urpm, $selected, $rejected) = @_; require urpm::select; map { if (my $from = $selected->{$_}{from}) { my $pkg = $urpm->{depslist}[$_]; my $name = $pkg->name; $pkg->flag_requested || urpm::select::was_pkg_name_installed($rejected, $name) ? () : ($name => "(required by " . $from->fullname . ")"); } elsif ($selected->{$_}{suggested}) { ($urpm->{depslist}[$_]->name => "(suggested)"); } else { (); } } keys %$selected; } #- returns the packages obsoleting packages marked "unrequested" #- #- side-effects: none sub _renamed_unrequested { my ($urpm, $rejected) = @_; my @obsoleted = grep { $rejected->{$_}{obsoleted} } keys %$rejected or return; # we have to read the list to know if the old package was marked "unrequested" my $current = unrequested_list($urpm); my %l; foreach my $fn (@obsoleted) { my ($n) = $fn =~ $fullname2name_re; $current->{$n} or next; my ($new_fn) = keys %{$rejected->{$fn}{closure}}; my ($new_n) = $new_fn =~ $fullname2name_re; if ($new_n ne $n) { $l{$new_n} = "(obsoletes $fn)"; } } %l; } sub new_unrequested { my ($urpm, $state) = @_; ( _selected_unrequested($urpm, $state->{selected}, $state->{rejected}), _renamed_unrequested($urpm, $state->{rejected}), ); } #- side-effects: /var/lib/rpm/installed-through-deps.list sub add_unrequested { my ($urpm, $state) = @_; my %l = new_unrequested($urpm, $state); append_to_file(unrequested_list__file($urpm), join('', map { "$_\t\t$l{$_}\n" } keys %l)); } #- we don't want to check orphans on every auto-select, #- doing it only after many packages have been added #- #- side-effects: none sub check_unrequested_orphans_after_auto_select { my ($urpm) = @_; my $f = unrequested_list__file($urpm); my $nb_added = wc_l($f) - wc_l("$f.old"); $nb_added >= $urpm->{options}{'nb-of-new-unrequested-pkgs-between-auto-select-orphans-check'}; } #- this function computes wether removing $toremove packages will create #- unrequested orphans. #- #- it does not return the new orphans since "whatsuggests" is not available, #- if it detects there are new orphans, _all_unrequested_orphans() #- must be used to have the list of the orphans #- #- side-effects: none sub unrequested_orphans_after_remove { my ($urpm, $toremove) = @_; my $db = urpm::db_open_or_die_($urpm); my %toremove = map { $_ => 1 } @$toremove; _unrequested_orphans_after_remove_once($urpm, $db, unrequested_list($urpm), \%toremove); } #- side-effects: none sub _unrequested_orphans_after_remove_once { my ($urpm, $db, $unrequested, $toremove) = @_; # first we get the list of requires/suggests that may be unneeded after removing $toremove my @requires; foreach my $fn (keys %$toremove) { my ($n) = $fn =~ $fullname2name_re; $db->traverse_tag('name', [ $n ], sub { my ($p) = @_; $p->fullname eq $fn or return; push @requires, $p->requires, $p->suggests; }); } foreach my $req (uniq(@requires)) { $db->traverse_tag_find('whatprovides', URPM::property2name($req), sub { my ($p) = @_; $toremove->{$p->fullname} and return; # already done $unrequested->{$p->name} or return; $p->provides_overlap($req) or return; # cool, $p is "unrequested" and will potentially be newly unneeded if (_will_package_be_unneeded($urpm, $db, $toremove, $p)) { $urpm->{debug}("installed " . $p->fullname . " can now be removed") if $urpm->{debug}; return 1; } else { $urpm->{debug}("installed " . $p->fullname . " can not be removed") if $urpm->{debug}; } 0; }) and return 1; } 0; } #- return true if $pkg will no more be required after removing $toremove #- #- nb: it may wrongly return false for complex loops, #- but will never wrongly return true #- #- side-effects: none sub _will_package_be_unneeded { my ($urpm, $db, $toremove, $pkg) = @_; my $required_maybe_loop; foreach my $prop ($pkg->provides) { _will_prop_still_be_needed($urpm, $db, $toremove, scalar($pkg->fullname), $prop, \$required_maybe_loop) and return; } if ($required_maybe_loop) { my ($fullname, @provides) = @$required_maybe_loop; $urpm->{debug}("checking wether $fullname is a depency loop") if $urpm->{debug}; # doing it locally, since we may fail (and so we must backtrack this change) my %ignore = %$toremove; $ignore{$pkg->fullname} = 1; foreach my $prop (@provides) { #- nb: here we won't loop. _will_prop_still_be_needed($urpm, $db, \%ignore, $fullname, $prop, \$required_maybe_loop) and return; } } 1; } #- return true if $prop will still be required after removing $toremove #- #- side-effects: none sub _will_prop_still_be_needed { my ($urpm, $db, $toremove, $fullname, $prop, $required_maybe_loop) = @_; my ($prov, $range) = URPM::property2name_range($prop) or return; $db->traverse_tag_find('whatrequires', $prov, sub { my ($p2) = @_; $toremove->{$p2->fullname} and return 0; # this one is going to be removed, skip it foreach ($p2->requires) { my ($pn, $ps) = URPM::property2name_range($_) or next; if ($pn eq $prov && URPM::ranges_overlap($ps, $range)) { #- we found $p2 which requires $prop if ($$required_maybe_loop) { $urpm->{debug}(" installed " . $p2->fullname . " still requires " . $fullname) if $urpm->{debug}; return 1; } $urpm->{debug}(" installed " . $p2->fullname . " may still requires " . $fullname) if $urpm->{debug}; $$required_maybe_loop = [ scalar $p2->fullname, $p2->provides ]; } } 0; }); } #- returns the list of "unrequested" orphans. #- #- side-effects: none sub _all_unrequested_orphans { my ($req, $unreq) = @_; my (%l, %provides); foreach my $pkg (@$unreq) { $l{$pkg->name} = $pkg; push @{$provides{$_}}, $pkg foreach $pkg->provides_nosense; } while (my $pkg = shift @$req) { foreach my $prop ($pkg->requires, $pkg->suggests) { my $n = URPM::property2name($prop); foreach my $p (@{$provides{$n} || []}) { if ($p != $pkg && $l{$p->name} && $p->provides_overlap($prop)) { delete $l{$p->name}; push @$req, $p; } } } } [ values %l ]; } #- side-effects: $state->{orphans_to_remove} #- + those of _installed_and_unrequested_lists (/var/lib/rpm/installed-through-deps.list) sub compute_future_unrequested_orphans { my ($urpm, $state) = @_; $urpm->{log}("computing unrequested orphans"); my ($current_pkgs, $unrequested) = _installed_and_unrequested_lists($urpm); put_in_hash($unrequested, { new_unrequested($urpm, $state) }); my %toremove = map { $_ => 1 } URPM::removed_or_obsoleted_packages($state); my @pkgs = grep { !$toremove{$_->fullname} } @$current_pkgs; push @pkgs, map { $urpm->{depslist}[$_] } keys %{$state->{selected} || {}}; my ($unreq, $req) = partition { $unrequested->{$_->name} } @pkgs; $state->{orphans_to_remove} = _all_unrequested_orphans($req, $unreq); # nb: $state->{orphans_to_remove} is used when computing ->selected_size } #- it is quite fast. the slow part is the creation of $installed_packages_packed #- (using installed_packages_packed()) # #- side-effects: #- + those of _installed_req_and_unreq (/var/lib/rpm/installed-through-deps.list) sub get_orphans { my ($urpm) = @_; $urpm->{log}("computing unrequested orphans"); my ($req, $unreq) = _installed_req_and_unreq($urpm); _all_unrequested_orphans($req, $unreq); } sub get_now_orphans_msg { my ($urpm) = @_; my $orphans = get_orphans($urpm); my @orphans = map { scalar $_->fullname } @$orphans or return ''; P("The following package is now orphan, use \"urpme --auto-orphans\" to remove it.", "The following packages are now orphans, use \"urpme --auto-orphans\" to remove them.", scalar(@orphans)) . "\n" . add_leading_spaces(join("\n", sort @orphans) . "\n"); } #- side-effects: none sub add_leading_spaces { my ($s) = @_; $s =~ s/^/ /gm; $s; } #- side-effects: none sub installed_leaves { my ($urpm, $o_discard) = @_; my $packages = installed_packages_packed($urpm); my (%l, %provides); foreach my $pkg (@$packages) { next if $o_discard && $o_discard->($pkg); $l{$pkg->name} = $pkg; push @{$provides{$_}}, $pkg foreach $pkg->provides_nosense; } foreach my $pkg (@$packages) { foreach my $prop ($pkg->requires, $pkg->suggests) { my $n = URPM::property2name($prop); foreach my $p (@{$provides{$n} || []}) { $p != $pkg && $p->provides_overlap($prop) and delete $l{$p->name}; } } } [ values %l ]; }