diff options
Diffstat (limited to 'apt-pkg/algorithms.cc')
| -rw-r--r-- | apt-pkg/algorithms.cc | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/apt-pkg/algorithms.cc b/apt-pkg/algorithms.cc index 6296e8fe8..69d4acd83 100644 --- a/apt-pkg/algorithms.cc +++ b/apt-pkg/algorithms.cc @@ -459,6 +459,49 @@ bool pkgAllUpgrade(pkgDepCache &Cache) return Fix.ResolveByKeep(); } /*}}}*/ +// AllUpgradeNoDelete - Upgrade without removing packages /*{{{*/ +// --------------------------------------------------------------------- +/* 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 pkgAllUpgradeNoDelete(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(); +} + /*}}}*/ // MinimizeUpgrade - Minimizes the set of packages to be upgraded /*{{{*/ // --------------------------------------------------------------------- /* This simply goes over the entire set of packages and tries to keep |