// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: packagemanager.cc,v 1.14 1999/02/21 08:38:53 jgg Exp $ /* ###################################################################### Package Manager - Abstacts the package manager More work is needed in the area of transitioning provides, ie exim replacing smail. This can cause interesing side effects. Other cases involving conflicts+replaces should be tested. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #ifdef __GNUG__ #pragma implementation "apt-pkg/packagemanager.h" #endif #include <apt-pkg/packagemanager.h> #include <apt-pkg/orderlist.h> #include <apt-pkg/depcache.h> #include <apt-pkg/error.h> #include <apt-pkg/version.h> #include <apt-pkg/acquire-item.h> #include <apt-pkg/algorithms.h> #include <apt-pkg/configuration.h> /*}}}*/ // PM::PackageManager - Constructor /*{{{*/ // --------------------------------------------------------------------- /* */ pkgPackageManager::pkgPackageManager(pkgDepCache &Cache) : Cache(Cache) { FileNames = new string[Cache.Head().PackageCount]; List = 0; Debug = _config->FindB("Debug::pkgPackageManager",false); } /*}}}*/ // PM::PackageManager - Destructor /*{{{*/ // --------------------------------------------------------------------- /* */ pkgPackageManager::~pkgPackageManager() { delete List; delete [] FileNames; } /*}}}*/ // PM::GetArchives - Queue the archives for download /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources, pkgRecords *Recs) { if (CreateOrderList() == false) return false; if (List->OrderUnpack() == false) return _error->Error("Internal ordering error"); for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++) { PkgIterator Pkg(Cache,*I); // Skip packages to erase if (Cache[Pkg].Delete() == true) continue; // Skip Packages that need configure only. if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && Cache[Pkg].Keep() == true) continue; new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache), FileNames[Pkg->ID]); } return true; } /*}}}*/ // PM::FixMissing - Keep all missing packages /*{{{*/ // --------------------------------------------------------------------- /* This is called to correct the installation when packages could not be downloaded. */ bool pkgPackageManager::FixMissing() { pkgProblemResolver Resolve(Cache); bool Bad = false; for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++) { // These don't need files if (Cache[I].Keep() == true) continue; if (Cache[I].Delete() == true) continue; // We have a filename if (FileNames[I->ID].empty() == false) continue; // Skip Packages that need configure only. if (I.State() == pkgCache::PkgIterator::NeedsConfigure && Cache[I].Keep() == true) continue; // Okay, this file is missing and we need it. Mark it for keep Bad = true; Cache.MarkKeep(I); } if (Bad == false) return true; // Now downgrade everything that is broken return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0; } /*}}}*/ // PM::CreateOrderList - Create the ordering class /*{{{*/ // --------------------------------------------------------------------- /* This populates the ordering list with all the packages that are going to change. */ bool pkgPackageManager::CreateOrderList() { delete List; List = new pkgOrderList(Cache); bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false); // Generate the list of affected packages and sort it for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++) { // Mark the package and its dependends for immediate configuration if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential || (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) && NoImmConfigure == false) { List->Flag(I,pkgOrderList::Immediate); // Look for other packages to make immediate configurea if (Cache[I].InstallVer != 0) for (DepIterator D = Cache[I].InstVerIter(Cache).DependsList(); D.end() == false; D++) if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends) List->Flag(D.TargetPkg(),pkgOrderList::Immediate); // And again with the current version. if (I->CurrentVer != 0) for (DepIterator D = I.CurrentVer().DependsList(); D.end() == false; D++) if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends) List->Flag(D.TargetPkg(),pkgOrderList::Immediate); } // Not interesting if ((Cache[I].Keep() == true || Cache[I].InstVerIter(Cache) == I.CurrentVer()) && I.State() == pkgCache::PkgIterator::NeedsNothing) continue; // Append it to the list List->push_back(I); } return true; } /*}}}*/ // PM::DepAlwaysTrue - Returns true if this dep is irrelevent /*{{{*/ // --------------------------------------------------------------------- /* The restriction on provides is to eliminate the case when provides are transitioning between valid states [ie exim to smail] */ bool pkgPackageManager::DepAlwaysTrue(DepIterator D) { if (D.TargetPkg()->ProvidesList != 0) return false; if ((Cache[D] & pkgDepCache::DepInstall) != 0 && (Cache[D] & pkgDepCache::DepNow) != 0) return true; return false; } /*}}}*/ // PM::CheckRConflicts - Look for reverse conflicts /*{{{*/ // --------------------------------------------------------------------- /* This looks over the reverses for a conflicts line that needs early removal. */ bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D, const char *Ver) { for (;D.end() == false; D++) { if (D->Type != pkgCache::Dep::Conflicts) continue; if (D.ParentPkg() == Pkg) continue; if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false) continue; if (List->IsNow(Pkg) == false) continue; if (EarlyRemove(D.ParentPkg()) == false) return false; } return true; } /*}}}*/ // PM::ConfigureAll - Run the all out configuration /*{{{*/ // --------------------------------------------------------------------- /* This configures every package. It is assumed they are all unpacked and that the final configuration is valid. */ bool pkgPackageManager::ConfigureAll() { pkgOrderList OList(Cache); // Populate the order list for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++) if (List->IsFlag(pkgCache::PkgIterator(Cache,*I), pkgOrderList::UnPacked) == true) OList.push_back(*I); if (OList.OrderConfigure() == false) return false; // Perform the configuring for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++) { PkgIterator Pkg(Cache,*I); if (Configure(Pkg) == false) return false; List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States); } return true; } /*}}}*/ // PM::SmartConfigure - Perform immediate configuration of the pkg /*{{{*/ // --------------------------------------------------------------------- /* This routine scheduals the configuration of the given package and all of it's dependents. */ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg) { pkgOrderList OList(Cache); if (DepAdd(OList,Pkg) == false) return false; if (OList.OrderConfigure() == false) return false; // Perform the configuring for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++) { PkgIterator Pkg(Cache,*I); if (Configure(Pkg) == false) return false; List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States); } // Sanity Check if (List->IsFlag(Pkg,pkgOrderList::Configured) == false) return _error->Error("Internal error, could not immediate configure %s",Pkg.Name()); return true; } /*}}}*/ // PM::DepAdd - Add all dependents to the oder list /*{{{*/ // --------------------------------------------------------------------- /* This recursively adds all dependents to the order list */ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth) { if (OList.IsFlag(Pkg,pkgOrderList::Added) == true) return true; if (List->IsFlag(Pkg,pkgOrderList::Configured) == true) return true; if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false) return false; // Put the package on the list OList.push_back(Pkg); OList.Flag(Pkg,pkgOrderList::Added); Depth++; // Check the dependencies to see if they are all satisfied. bool Bad = false; for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;) { if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends) { D++; continue; } // Grok or groups Bad = true; for (bool LastOR = true; D.end() == false && LastOR == true; D++) { LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or; if (Bad == false) continue; Version **VList = D.AllTargets(); for (Version **I = VList; *I != 0 && Bad == true; I++) { VerIterator Ver(Cache,*I); PkgIterator Pkg = Ver.ParentPkg(); // See if the current version is ok if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true && Pkg.State() == PkgIterator::NeedsNothing) { Bad = false; continue; } // Not the install version if (Cache[Pkg].InstallVer != *I || (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing)) continue; if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true) Bad = !DepAdd(OList,Pkg,Depth); if (List->IsFlag(Pkg,pkgOrderList::Configured) == true) Bad = false; } delete [] VList; } if (Bad == true) { OList.Flag(Pkg,0,pkgOrderList::Added); OList.pop_back(); Depth--; return false; } } Depth--; return true; } /*}}}*/ // PM::EarlyRemove - Perform removal of packages before their time /*{{{*/ // --------------------------------------------------------------------- /* This is called to deal with conflicts arising from unpacking */ bool pkgPackageManager::EarlyRemove(PkgIterator Pkg) { if (List->IsNow(Pkg) == false) return true; // Already removed it if (List->IsFlag(Pkg,pkgOrderList::Removed) == true) return true; // Woops, it will not be re-installed! if (List->IsFlag(Pkg,pkgOrderList::InList) == false) return false; bool Res = SmartRemove(Pkg); if (Cache[Pkg].Delete() == false) List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States); return Res; } /*}}}*/ // PM::SmartRemove - Removal Helper /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgPackageManager::SmartRemove(PkgIterator Pkg) { if (List->IsNow(Pkg) == false) return true; List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States); return Remove(Pkg); } /*}}}*/ // PM::SmartUnPack - Install helper /*{{{*/ // --------------------------------------------------------------------- /* This performs the task of handling pre-depends. */ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg) { // Check if it is already unpacked if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && Cache[Pkg].Keep() == true) { List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States); if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true) if (SmartConfigure(Pkg) == false) return _error->Error("Internal Error, Could not perform immediate configuraton"); return true; } /* See if this packages install version has any predependencies that are not met by 'now' packages. */ for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false; D++) { if (D->Type == pkgCache::Dep::PreDepends) { // Look for possible ok targets. Version **VList = D.AllTargets(); bool Bad = true; for (Version **I = VList; *I != 0 && Bad == true; I++) { VerIterator Ver(Cache,*I); PkgIterator Pkg = Ver.ParentPkg(); // See if the current version is ok if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true && Pkg.State() == PkgIterator::NeedsNothing) { Bad = false; continue; } } // Look for something that could be configured. for (Version **I = VList; *I != 0 && Bad == true; I++) { VerIterator Ver(Cache,*I); PkgIterator Pkg = Ver.ParentPkg(); // Not the install version if (Cache[Pkg].InstallVer != *I || (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing)) continue; Bad = !SmartConfigure(Pkg); } delete [] VList; if (Bad == true) return _error->Error("Internal Error, Couldn't configure a pre-depend"); continue; } if (D->Type == pkgCache::Dep::Conflicts) { /* Look for conflicts. Two packages that are both in the install state cannot conflict so we don't check.. */ Version **VList = D.AllTargets(); for (Version **I = VList; *I != 0; I++) { VerIterator Ver(Cache,*I); PkgIterator Pkg = Ver.ParentPkg(); // See if the current version is conflicting if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true) { if (EarlyRemove(Pkg) == false) return _error->Error("Internal Error, Could not early remove %s",Pkg.Name()); } } delete [] VList; } } // Check for reverse conflicts. CheckRConflicts(Pkg,Pkg.RevDependsList(), Cache[Pkg].InstVerIter(Cache).VerStr()); for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList(); P.end() == false; P++) CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion()); if (Install(Pkg,FileNames[Pkg->ID]) == false) return false; List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States); // Perform immedate configuration of the package. if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true) if (SmartConfigure(Pkg) == false) return _error->Error("Internal Error, Could not perform immediate configuraton"); return true; } /*}}}*/ // PM::OrderInstall - Installation ordering routine /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgPackageManager::OrderInstall() { if (CreateOrderList() == false) return false; if (Debug == true) clog << "Begining to order" << endl; if (List->OrderUnpack() == false) return _error->Error("Internal ordering error"); if (Debug == true) clog << "Done ordering" << endl; for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++) { PkgIterator Pkg(Cache,*I); // Sanity check if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing) return _error->Error("Internal Error, trying to manipulate a kept package"); // Perform a delete or an install if (Cache[Pkg].Delete() == true) { if (SmartRemove(Pkg) == false) return false; } else if (SmartUnPack(Pkg) == false) return false; } // Final run through the configure phase if (ConfigureAll() == false) return false; // Sanity check for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++) if (List->IsFlag(*I,pkgOrderList::Configured) == false) return _error->Error("Internal error, packages left unconfigured. %s", PkgIterator(Cache,*I).Name()); return true; } /*}}}*/ // PM::DoInstall - Does the installation /*{{{*/ // --------------------------------------------------------------------- /* This uses the filenames in FileNames and the information in the DepCache to perform the installation of packages.*/ bool pkgPackageManager::DoInstall() { return OrderInstall() && Go(); } /*}}}*/