#include <apt-pkg/algorithms.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/version.h>
#include <apt-pkg/sptr.h>
+
#include <apti18n.h>
-
+#include <sys/types.h>
+#include <regex.h>
#include <iostream>
/*}}}*/
using namespace std;
/*}}}*/
-// pkgMarkPkgUsed - Mark used packages as dirty /*{{{*/
-// ---------------------------------------------------------------------
-/* Mark all reachable packages as dirty. */
-void pkgMarkPkgUsed(pkgDepCache &Cache, pkgCache::PkgIterator Pkg,
- pkgCache::State::PkgRemoveState DirtLevel)
+// mark a single package in Mark-and-Sweep
+void pkgMarkPackage(pkgDepCache &Cache,
+ const pkgCache::PkgIterator &pkg,
+ const pkgCache::VerIterator &ver,
+ bool follow_recommends,
+ bool follow_suggests)
{
- // If it is not installed, and we are in manual mode, ignore it
- if ((Pkg->CurrentVer == 0 && Cache[Pkg].Install() == false || Cache[Pkg].Delete() == true) &&
- DirtLevel == pkgCache::State::RemoveManual)
+ pkgDepCache::StateCache &state=Cache[pkg];
+ pkgCache::VerIterator candver=state.CandidateVerIter(Cache);
+ pkgCache::VerIterator instver=state.InstVerIter(Cache);
+
+#if 0
+ // If a package was garbage-collected but is now being marked, we
+ // should re-select it
+ // For cases when a pkg is set to upgrade and this trigger the
+ // removal of a no-longer used dependency. if the pkg is set to
+ // keep again later it will result in broken deps
+ if(state.Delete() && state.RemoveReason=pkgDepCache::Unused)
{
-// fprintf(stdout,"This one is not installed/virtual %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
- return;
+ if(ver==candver)
+ mark_install(pkg, false, false, NULL);
+ else if(ver==pkg.CurrentVer())
+ MarkKeep(pkg);
+
+ instver=state.InstVerIter(*this);
}
+#endif
- // If it is not installed, and it is not virtual, ignore it
- if ((Pkg->CurrentVer == 0 && Cache[Pkg].Install() == false || Cache[Pkg].Delete() == true) &&
- Pkg->VersionList != 0)
- {
-// fprintf(stdout,"This one is not installed %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+ // Ignore versions other than the InstVer, and ignore packages
+ // that are already going to be removed or just left uninstalled.
+ if(!(ver==instver && !instver.end()))
return;
- }
- // If it is similar or more dirty than we are ;-), because we've been here already, don't mark it
- // This is necessary because virtual packages just relay the current level,
- // so it may be possible e.g. that this was already seen with ::RemoveSuggested, but
- // we are ::RemoveRequired
- if (Cache[Pkg].Dirty() >= DirtLevel)
- {
- //fprintf(stdout,"Seen already %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+ // if we are marked already we are done
+ if(state.Marked)
return;
- }
-
- // If it is less important than the current DirtLevel, don't mark it
- if (Cache[Pkg].AutomaticRemove != pkgCache::State::RemoveManual &&
- Cache[Pkg].AutomaticRemove > DirtLevel)
+
+ //std::cout << "Setting Marked for: " << pkg.Name() << std::endl;
+ state.Marked=true;
+
+ if(!ver.end())
{
-// fprintf(stdout,"We don't need %s %d %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel, Cache[Pkg].Dirty());
- return;
+ for(pkgCache::DepIterator d=ver.DependsList(); !d.end(); ++d)
+ {
+ if(d->Type==pkgCache::Dep::Depends ||
+ d->Type==pkgCache::Dep::PreDepends ||
+ (follow_recommends &&
+ d->Type==pkgCache::Dep::Recommends) ||
+ (follow_suggests &&
+ d->Type==pkgCache::Dep::Suggests))
+ {
+ // Try all versions of this package.
+ for(pkgCache::VerIterator V=d.TargetPkg().VersionList();
+ !V.end(); ++V)
+ {
+ if(_system->VS->CheckDep(V.VerStr(),d->CompareOp, d.TargetVer()))
+ {
+ pkgMarkPackage(Cache, V.ParentPkg(), V,
+ follow_recommends, follow_suggests);
+ }
+ }
+ // Now try virtual packages
+ for(pkgCache::PrvIterator prv=d.TargetPkg().ProvidesList();
+ !prv.end(); ++prv)
+ {
+ if(_system->VS->CheckDep(prv.ProvideVersion(), d->CompareOp,
+ d.TargetVer()))
+ {
+ pkgMarkPackage(Cache, prv.OwnerPkg(), prv.OwnerVer(),
+ follow_recommends, follow_suggests);
+ }
+ }
+ }
+ }
}
+}
+
- // Mark it as used
- Cache.SetDirty(Pkg, DirtLevel);
-
- //fprintf(stdout,"We keep %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
+// Helper for APT::NeverAutoRemove, always include the packages matching
+// this regexp into the root-set
+inline bool
+pkgMarkAlwaysInclude(pkgCache::PkgIterator p, vector<regex_t*> alwaysMark)
+{
+ for(unsigned int i=0;i<alwaysMark.size();i++)
+ if (regexec(alwaysMark[i],p.Name(),0,0,0) == 0)
+ return true;
+
+ return false;
+}
- // We are a virtual package
- if (Pkg->VersionList == 0)
+// the main mark algorithm
+bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc func)
+{
+ bool follow_recommends;
+ bool follow_suggests;
+
+ // init the states
+ for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p)
{
-// fprintf(stdout,"We are virtual %s %d %d\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
- for (pkgCache::PrvIterator Prv = Pkg.ProvidesList(); ! Prv.end(); ++Prv)
- pkgMarkPkgUsed (Cache, Prv.OwnerPkg(), DirtLevel);
- return;
+ Cache[p].Marked=false;
+ Cache[p].Garbage=false;
+
+ // debug output
+ if(_config->FindB("Debug::pkgAutoRemove",false)
+ && Cache[p].Flags & pkgCache::Flag::Auto)
+ std::clog << "AutoDep: " << p.Name() << std::endl;
}
- // Depending on the type of dependency, follow it
- for (pkgCache::DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); ! D.end(); ++D)
+ // init vars
+ follow_recommends=_config->FindB("APT::AutoRemove::RecommendsImportant",false);
+ follow_suggests=_config->FindB("APT::AutoRemove::SuggestsImportant", false);
+
+
+ // init the "NeverAutoRemove" variable
+ vector<regex_t *> neverAutoRemoveRegexp;
+ Configuration::Item const *Opts;
+ Opts = _config->Tree("APT::NeverAutoRemove");
+ if (Opts != 0 && Opts->Child != 0)
{
-// fprintf(stdout,"We depend on %s %s\n", D.TargetPkg().Name(), D.DepType());
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
- switch(D->Type)
+ regex_t *p = new regex_t;
+ if(regcomp(p,Opts->Value.c_str(),
+ REG_EXTENDED | REG_ICASE | REG_NOSUB) != 0)
+ {
+ regfree(p);
+ for(unsigned int i=0;i<neverAutoRemoveRegexp.size();i++)
+ regfree(neverAutoRemoveRegexp[i]);
+ return _error->Error("Regex compilation error for APT::NeverAutoRemove");
+ }
+ neverAutoRemoveRegexp.push_back(p);
+ }
+ }
+
+
+ // do the mark part, this is the core bit of the algorithm
+ for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p)
+ {
+ if( (func != NULL ? (*func)(p) : false) ||
+ pkgMarkAlwaysInclude(p, neverAutoRemoveRegexp) ||
+ !(Cache[p].Flags & pkgCache::Flag::Auto) ||
+ (p->Flags & pkgCache::Flag::Essential))
+
{
- case pkgCache::Dep::Depends:
- case pkgCache::Dep::PreDepends:
- pkgMarkPkgUsed (Cache, D.TargetPkg(), pkgCache::State::RemoveRequired);
- break;
- case pkgCache::Dep::Recommends:
- pkgMarkPkgUsed (Cache, D.TargetPkg(), pkgCache::State::RemoveRecommended);
- break;
- case pkgCache::Dep::Suggests:
- pkgMarkPkgUsed (Cache, D.TargetPkg(), pkgCache::State::RemoveSuggested);
- break;
- case pkgCache::Dep::Conflicts:
- case pkgCache::Dep::Replaces:
- case pkgCache::Dep::Obsoletes:
- // We don't handle these here
- break;
+ // the package is installed (and set to keep)
+ if(Cache[p].Keep() && !p.CurrentVer().end())
+ pkgMarkPackage(Cache, p, p.CurrentVer(),
+ follow_recommends, follow_suggests);
+ // the package is to be installed
+ else if(Cache[p].Install())
+ pkgMarkPackage(Cache, p, Cache[p].InstVerIter(Cache),
+ follow_recommends, follow_suggests);
}
}
-// fprintf(stdout,"We keep %s %d %d <END>\n", Pkg.Name(), Pkg->AutomaticRemove, DirtLevel);
-}
- /*}}}*/
-bool pkgMarkUsed(pkgDepCache &Cache)
-{
- // debug only
- if(_config->FindI("Debug::pkgAutoRemove",false) == true)
- for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); ! Pkg.end(); ++Pkg)
- if(!Cache[Pkg].Dirty() && Cache[Pkg].AutomaticRemove > 0)
- std::clog << "has auto-remove information: " << Pkg.Name()
- << " " << (int)Cache[Pkg].AutomaticRemove
- << std::endl;
-
- // init with defaults
- for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); ! Pkg.end(); ++Pkg)
- Cache.SetDirty(Pkg, pkgCache::State::RemoveUnknown);
-
- // go recursive over the cache
- for (pkgCache::PkgIterator Pkg = Cache.PkgBegin(); ! Pkg.end(); ++Pkg)
- pkgMarkPkgUsed (Cache, Pkg, pkgCache::State::RemoveManual);
+ // do the sweep
+ for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p)
+ {
+ pkgDepCache::StateCache &state=Cache[p];
+
+ // if it is not marked and it is installed, it's garbage
+ if(!state.Marked && !p.CurrentVer().end())
+ {
+ state.Garbage=true;
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::cout << "Garbage: " << p.Name() << std::endl;
+
+#if 0 // mvo: the below bits still needs to be ported
+
+ // Be sure not to re-delete already deleted packages.
+ if(delete_unused && (!p.CurrentVer().end() || state.Install()) &&
+ !state.Delete())
+ {
+ bool do_delete=true;
+
+ // If the package is being upgraded, check if we're
+ // losing a versioned dep. If the dependency matches
+ // the previous version and not the new version, keep
+ // the package back instead of removing it.
+ if(!p.CurrentVer().end() && state.Install())
+ {
+ const char *vs=p.CurrentVer().VerStr();
+
+ // Check direct revdeps only. THIS ASSUMES NO
+ // VERSIONED PROVIDES, but Debian probably won't
+ // have them for ages if ever.
+ for(pkgCache::DepIterator revdep=p.RevDependsList();
+ !revdep.end(); ++revdep)
+ {
+ pkgCache::PkgIterator depender=revdep.ParentPkg();
+ // Find which version of the depending package
+ // will be installed.
+ pkgCache::VerIterator instver=(*this)[depender].InstVerIter(*this);
+
+ // Only pay attention to strong positive
+ // dependencies whose parents will be installed.
+ if(revdep.ParentVer()==instver &&
+ (revdep->Type==pkgCache::Dep::Depends ||
+ revdep->Type==pkgCache::Dep::PreDepends ||
+ (revdep->Type==pkgCache::Dep::Recommends &&
+ follow_recommends)))
+ {
+ // If the previous version matched, cancel the
+ // deletion. (note that I assume that the new
+ // version does NOT match; otherwise it would
+ // not be unused!)
+ if(_system->VS->CheckDep(vs,
+ revdep->CompareOp,
+ revdep.TargetVer()))
+ {
+ mark_keep(p, false, false, undo);
+ do_delete=false;
+ break;
+ }
+ }
+ }
+ }
+
+ if(do_delete)
+ mark_delete(p, false, true, undo);
+ }
+#endif
+ }
+ }
+
+ // cleanup
+ for(unsigned int i=0;i<neverAutoRemoveRegexp.size();i++)
+ regfree(neverAutoRemoveRegexp[i]);
+
return true;
}
projects / apt.git / blobdiff