-// DistUpgrade - Distribution upgrade /*{{{*/
-// ---------------------------------------------------------------------
-/* This autoinstalls every package and then force installs every
- pre-existing package. This creates the initial set of conditions which
- most likely contain problems because too many things were installed.
-
- The problem resolver is used to resolve the problems.
- */
-bool pkgDistUpgrade(pkgDepCache &Cache)
-{
- std::string const solver = _config->Find("APT::Solver", "internal");
- if (solver != "internal") {
- OpTextProgress Prog(*_config);
- return EDSP::ResolveExternal(solver.c_str(), Cache, false, true, false, &Prog);
- }
-
- pkgDepCache::ActionGroup group(Cache);
-
- /* Upgrade all installed packages first without autoinst to help the resolver
- in versioned or-groups to upgrade the old solver instead of installing
- a new one (if the old solver is not the first one [anymore]) */
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if (I->CurrentVer != 0)
- Cache.MarkInstall(I, false, 0, false);
-
- /* Auto upgrade all installed packages, this provides the basis
- for the installation */
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if (I->CurrentVer != 0)
- Cache.MarkInstall(I, true, 0, false);
-
- /* Now, install each essential package which is not installed
- (and not provided by another package in the same name group) */
- std::string essential = _config->Find("pkgCacheGen::Essential", "all");
- if (essential == "all")
- {
- for (pkgCache::GrpIterator G = Cache.GrpBegin(); G.end() == false; ++G)
- {
- bool isEssential = false;
- bool instEssential = false;
- for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
- {
- if ((P->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
- continue;
- isEssential = true;
- if (Cache[P].Install() == true)
- {
- instEssential = true;
- break;
- }
- }
- if (isEssential == false || instEssential == true)
- continue;
- pkgCache::PkgIterator P = G.FindPreferredPkg();
- Cache.MarkInstall(P, true, 0, false);
- }
- }
- else if (essential != "none")
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
- Cache.MarkInstall(I, true, 0, false);
-
- /* We do it again over all previously installed packages to force
- conflict resolution on them all. */
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if (I->CurrentVer != 0)
- Cache.MarkInstall(I, false, 0, false);
-
- pkgProblemResolver Fix(&Cache);
-
- // Hold back held packages.
- if (_config->FindB("APT::Ignore-Hold",false) == false)
- {
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- {
- if (I->SelectedState == pkgCache::State::Hold)
- {
- Fix.Protect(I);
- Cache.MarkKeep(I, false, false);
- }
- }
- }
-
- return Fix.Resolve();
-}
- /*}}}*/
-// AllUpgradeNoNewPackages - Upgrade but no removals or new pkgs /*{{{*/
-bool pkgAllUpgradeNoNewPackages(pkgDepCache &Cache)
-{
- std::string const solver = _config->Find("APT::Solver", "internal");
- if (solver != "internal") {
- OpTextProgress Prog(*_config);
- return EDSP::ResolveExternal(solver.c_str(), Cache, true, false, false, &Prog);
- }
-
- pkgDepCache::ActionGroup group(Cache);
-
- pkgProblemResolver Fix(&Cache);
-
- if (Cache.BrokenCount() != 0)
- return false;
-
- // Upgrade all installed packages
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- {
- if (Cache[I].Install() == true)
- Fix.Protect(I);
-
- if (_config->FindB("APT::Ignore-Hold",false) == false)
- if (I->SelectedState == pkgCache::State::Hold)
- continue;
-
- if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
- Cache.MarkInstall(I, false, 0, false);
- }
-
- return Fix.ResolveByKeep();
-}
- /*}}}*/
-// AllUpgradeWithNewInstalls - Upgrade + install new packages as needed /*{{{*/
-// ---------------------------------------------------------------------
-/* Right now the system must be consistent before this can be called.
- * Upgrade as much as possible without deleting anything (useful for
- * stable systems)
- */
-bool pkgAllUpgradeWithNewPackages(pkgDepCache &Cache)
-{
- pkgDepCache::ActionGroup group(Cache);
-
- pkgProblemResolver Fix(&Cache);
-
- if (Cache.BrokenCount() != 0)
- return false;
-
- // provide the initial set of stuff we want to upgrade by marking
- // all upgradable packages for upgrade
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- {
- if (I->CurrentVer != 0 && Cache[I].InstallVer != 0)
- {
- if (_config->FindB("APT::Ignore-Hold",false) == false)
- if (I->SelectedState == pkgCache::State::Hold)
- continue;
-
- Cache.MarkInstall(I, false, 0, false);
- }
- }
-
- // then let auto-install loose
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if (Cache[I].Install())
- Cache.MarkInstall(I, true, 0, false);
-
- // ... but it may remove stuff, we we need to clean up afterwards again
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if (Cache[I].Delete() == true)
- Cache.MarkKeep(I, false, false);
-
- // resolve remaining issues via keep
- return Fix.ResolveByKeep();
-}
- /*}}}*/
-// AllUpgrade - Upgrade as many packages as possible /*{{{*/
-// ---------------------------------------------------------------------
-/* Right now the system must be consistent before this can be called.
- It also will not change packages marked for install, it only tries
- to install packages not marked for install */
-bool pkgAllUpgrade(pkgDepCache &Cache)
-{
- return pkgAllUpgradeNoNewPackages(Cache);
-}
- /*}}}*/
-// MinimizeUpgrade - Minimizes the set of packages to be upgraded /*{{{*/
-// ---------------------------------------------------------------------
-/* This simply goes over the entire set of packages and tries to keep
- each package marked for upgrade. If a conflict is generated then
- the package is restored. */
-bool pkgMinimizeUpgrade(pkgDepCache &Cache)
-{
- pkgDepCache::ActionGroup group(Cache);
-
- if (Cache.BrokenCount() != 0)
- return false;
-
- // We loop for 10 tries to get the minimal set size.
- bool Change = false;
- unsigned int Count = 0;
- do
- {
- Change = false;
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- {
- // Not interesting
- if (Cache[I].Upgrade() == false || Cache[I].NewInstall() == true)
- continue;
-
- // Keep it and see if that is OK
- Cache.MarkKeep(I, false, false);
- if (Cache.BrokenCount() != 0)
- Cache.MarkInstall(I, false, 0, false);
- else
- {
- // If keep didnt actually do anything then there was no change..
- if (Cache[I].Upgrade() == false)
- Change = true;
- }
- }
- ++Count;
- }
- while (Change == true && Count < 10);
-
- if (Cache.BrokenCount() != 0)
- return _error->Error("Internal Error in pkgMinimizeUpgrade");
-
- return true;
-}
- /*}}}*/
-// APT::Upgrade::Upgrade - Upgrade using a specific strategy /*{{{*/
-bool APT::Upgrade::Upgrade(pkgDepCache &Cache, int mode)
-{
- if (mode == 0)
- {
- return pkgDistUpgrade(Cache);
- }
- else if ((mode & ~FORBID_REMOVE_PACKAGES) == 0)
- {
- return pkgAllUpgradeWithNewPackages(Cache);
- }
- else if ((mode & ~(FORBID_REMOVE_PACKAGES|FORBID_NEW_INSTALL_PACKAGES)) == 0)
- {
- return pkgAllUpgradeNoNewPackages(Cache);
- }
- else
- _error->Error("pkgAllUpgrade called with unsupported mode %i", mode);
-
- return false;
-}
- /*}}}*/
projects / apt.git / blobdiff