diff options
Diffstat (limited to 'apt-pkg/algorithms.cc')
| -rw-r--r-- | apt-pkg/algorithms.cc | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc index 479927d65..c679e76f6 100644 --- a/apt-pkg/algorithms.cc +++ b/apt-pkg/algorithms.cc @@ -20,7 +20,10 @@ #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> @@ -1061,6 +1064,20 @@ bool pkgProblemResolver::Resolve(bool BrokenFix) return _error->Error(_("Unable to correct problems, you have held broken packages.")); } + // set the auto-flags (mvo: I'm not sure if we _really_ need this, but + // I didn't managed + pkgCache::PkgIterator I = Cache.PkgBegin(); + for (;I.end() != true; I++) { + if (Cache[I].NewInstall() && !(Flags[I->ID] & PreInstalled)) { + if(_config->FindI("Debug::pkgAutoRemove",false)) { + std::clog << "Resolve installed new pkg: " << I.Name() + << " (now marking it as auto)" << std::endl; + } + Cache[I].Flags |= pkgCache::Flag::Auto; + } + } + + return true; } /*}}}*/ @@ -1232,3 +1249,188 @@ void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List) qsort(List,Count,sizeof(*List),PrioComp); } /*}}}*/ + + +// 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) +{ + 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) + { + if(ver==candver) + mark_install(pkg, false, false, NULL); + else if(ver==pkg.CurrentVer()) + MarkKeep(pkg); + + instver=state.InstVerIter(*this); + } +#endif + + // 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 we are marked already we are done + if(state.Marked) + return; + + //std::cout << "Setting Marked for: " << pkg.Name() << std::endl; + state.Marked=true; + + if(!ver.end()) + { + 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); + } + } + } + } + } +} + + +bool pkgMarkUsed(pkgDepCache &Cache) +{ + bool follow_recommends; + bool follow_suggests; + + // init the states + for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p) + { + Cache[p].Marked=false; + Cache[p].Garbage=false; + } + + // init vars + follow_recommends=_config->FindB("APT::AutoRemove::RecommendsImportant",false); + follow_suggests=_config->FindB("APT::AutoRemove::SuggestsImportend", false); + + + // do the mark part + for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p) + { + if(!(Cache[p].Flags & pkgCache::Flag::Auto) || + (p->Flags & pkgCache::Flag::Essential)) + { + if(Cache[p].Keep() && !p.CurrentVer().end()) + pkgMarkPackage(Cache, p, p.CurrentVer(), + follow_recommends, follow_suggests); + else if(Cache[p].Install()) + pkgMarkPackage(Cache, p, Cache[p].InstVerIter(Cache), + follow_recommends, follow_suggests); + } + } + + + // do the sweep + for(pkgCache::PkgIterator p=Cache.PkgBegin(); !p.end(); ++p) + { + pkgDepCache::StateCache &state=Cache[p]; + + if(!state.Marked) + { + // mark installed but not yet marked stuff as garbage + if(p->CurrentVer != 0) { + state.Garbage=true; + 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 + } + } + return true; +} |