From 76e2632459410dec81337edb6a9fee33c9a660f3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 13 Apr 2024 11:59:37 +0200 Subject: Adding upstream version 2.7.12. Signed-off-by: Daniel Baumann --- apt-pkg/packagemanager.cc | 1172 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1172 insertions(+) create mode 100644 apt-pkg/packagemanager.cc (limited to 'apt-pkg/packagemanager.cc') diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc new file mode 100644 index 0000000..ce7677e --- /dev/null +++ b/apt-pkg/packagemanager.cc @@ -0,0 +1,1172 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + Package Manager - Abstracts the package manager + + More work is needed in the area of transitioning provides, ie exim + replacing smail. This can cause interesting side effects. + + Other cases involving conflicts+replaces should be tested. + + ##################################################################### */ + /*}}}*/ +// Include Files /*{{{*/ +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include + /*}}}*/ +using namespace std; + +bool pkgPackageManager::SigINTStop = false; + +// PM::PackageManager - Constructor /*{{{*/ +// --------------------------------------------------------------------- +/* */ +pkgPackageManager::pkgPackageManager(pkgDepCache *pCache) : Cache(*pCache), + List(NULL), Res(Incomplete), d(NULL) +{ + FileNames = new string[Cache.Head().PackageCount]; + Debug = _config->FindB("Debug::pkgPackageManager",false); + NoImmConfigure = !_config->FindB("APT::Immediate-Configure",true); + ImmConfigureAll = _config->FindB("APT::Immediate-Configure-All",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; + + bool const ordering = + _config->FindB("PackageManager::UnpackAll",true) ? + List->OrderUnpack() : List->OrderCritical(); + if (ordering == false) + return _error->Error("Internal ordering error"); + + for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I) + { + PkgIterator Pkg(Cache,*I); + FileNames[Pkg->ID] = string(); + + // 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; + + // Skip already processed packages + if (List->IsNow(Pkg) == false) + 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() +{ + pkgDepCache::ActionGroup group(Cache); + pkgProblemResolver Resolve(&Cache); + List->SetFileList(FileNames); + + bool Bad = false; + for (PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I) + { + if (List->IsMissing(I) == false) + continue; + + // Okay, this file is missing and we need it. Mark it for keep + Bad = true; + Cache.MarkKeep(I, false, false); + } + + // We have to empty the list otherwise it will not have the new changes + delete List; + List = 0; + + if (Bad == false) + return true; + + // Now downgrade everything that is broken + return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0; +} + /*}}}*/ +// PM::ImmediateAdd - Add the immediate flag recursively /*{{{*/ +// --------------------------------------------------------------------- +/* This adds the immediate flag to the pkg and recursively to the + dependencies + */ +void pkgPackageManager::ImmediateAdd(PkgIterator I, bool UseInstallVer, unsigned const int &Depth) +{ + DepIterator D; + + if(UseInstallVer) + { + if(Cache[I].InstallVer == 0) + return; + D = Cache[I].InstVerIter(Cache).DependsList(); + } else { + if (I->CurrentVer == 0) + return; + D = I.CurrentVer().DependsList(); + } + + for ( /* nothing */ ; D.end() == false; ++D) + if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends) + { + if(!List->IsFlag(D.TargetPkg(), pkgOrderList::Immediate)) + { + if(Debug) + clog << OutputInDepth(Depth) << "ImmediateAdd(): Adding Immediate flag to " << APT::PrettyPkg(&Cache, D.TargetPkg()) << " cause of " << D.DepType() << " " << I.FullName() << endl; + List->Flag(D.TargetPkg(),pkgOrderList::Immediate); + ImmediateAdd(D.TargetPkg(), UseInstallVer, Depth + 1); + } + } + return; +} + /*}}}*/ +// PM::CreateOrderList - Create the ordering class /*{{{*/ +// --------------------------------------------------------------------- +/* This populates the ordering list with all the packages that are + going to change. */ +bool pkgPackageManager::CreateOrderList() +{ + if (List != 0) + return true; + + delete List; + List = new pkgOrderList(&Cache); + + if (Debug && ImmConfigureAll) + clog << "CreateOrderList(): Adding Immediate flag for all packages because of APT::Immediate-Configure-All" << endl; + + // Generate the list of affected packages and sort it + for (PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I) + { + // Ignore no-version packages + if (I->VersionList == 0) + continue; + + // Mark the package and its dependents for immediate configuration + if ((((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential) && + NoImmConfigure == false) || ImmConfigureAll) + { + if(Debug && !ImmConfigureAll) + clog << "CreateOrderList(): Adding Immediate flag for " << I.FullName() << endl; + List->Flag(I,pkgOrderList::Immediate); + + if (!ImmConfigureAll) { + // Look for other install packages to make immediate configurea + ImmediateAdd(I, true); + + // And again with the current version. + ImmediateAdd(I, false); + } + } + + // Not interesting + if ((Cache[I].Keep() == true || + Cache[I].InstVerIter(Cache) == I.CurrentVer()) && + I.State() == pkgCache::PkgIterator::NeedsNothing && + (Cache[I].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall && + (I.Purge() != false || Cache[I].Mode != pkgDepCache::ModeDelete || + (Cache[I].iFlags & pkgDepCache::Purge) != pkgDepCache::Purge)) + continue; + + // Append it to the list + List->push_back(I); + } + + return true; +} + /*}}}*/ +// PM::DepAlwaysTrue - Returns true if this dep is irrelevant /*{{{*/ +// --------------------------------------------------------------------- +/* 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 && + D->Type != pkgCache::Dep::Obsoletes) + continue; + + // The package hasn't been changed + if (List->IsNow(Pkg) == false) + continue; + + // Ignore self conflicts, ignore conflicts from irrelevant versions + if (D.IsIgnorable(Pkg) || D.ParentVer() != D.ParentPkg().CurrentVer()) + continue; + + if (Cache.VS().CheckDep(Ver,D->CompareOp,D.TargetVer()) == false) + continue; + + if (EarlyRemove(D.ParentPkg(), &D) == false) + return _error->Error("Reverse conflicts early remove for package '%s' failed", + Pkg.FullName().c_str()); + } + return true; +} + /*}}}*/ +// PM::CheckRBreaks - Look for reverse breaks /*{{{*/ +bool pkgPackageManager::CheckRBreaks(PkgIterator const &Pkg, DepIterator D, + const char * const Ver) +{ + for (;D.end() == false; ++D) + { + if (D->Type != pkgCache::Dep::DpkgBreaks) + continue; + + PkgIterator const DP = D.ParentPkg(); + if (Cache[DP].Delete() == false) + continue; + + // Ignore self conflicts, ignore conflicts from irrelevant versions + if (D.IsIgnorable(Pkg) || D.ParentVer() != DP.CurrentVer()) + continue; + + if (Cache.VS().CheckDep(Ver, D->CompareOp, D.TargetVer()) == false) + continue; + + // no earlyremove() here as user has already agreed to the permanent removal + if (SmartRemove(DP) == false) + return _error->Error("Internal Error, Could not early remove %s (%d)",DP.FullName().c_str(), 4); + } + 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. This is also used to catch packages + that have not been configured when using ImmConfigureAll */ +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; + + std::string const conf = _config->Find("PackageManager::Configure", "smart"); + bool const ConfigurePkgs = (ImmConfigureAll || conf == "all"); + + // Perform the configuring + for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); ++I) + { + PkgIterator Pkg(Cache,*I); + + /* Check if the package has been configured, this can happen if SmartConfigure + calls its self */ + if (List->IsFlag(Pkg,pkgOrderList::Configured)) continue; + + if (ConfigurePkgs == true && SmartConfigure(Pkg, 0) == false) { + if (ImmConfigureAll) + _error->Error(_("Could not perform immediate configuration on '%s'. " + "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.FullName().c_str(),1); + else + _error->Error("Internal error, packages left unconfigured. %s",Pkg.FullName().c_str()); + return false; + } + + List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States); + } + + return true; +} + /*}}}*/ +// PM::NonLoopingSmart - helper to avoid loops while calling Smart methods /*{{{*/ +// ----------------------------------------------------------------------- +/* ensures that a loop of the form A depends B, B depends A (and similar) + is not leading us down into infinite recursion segfault land */ +bool pkgPackageManager::NonLoopingSmart(SmartAction const action, pkgCache::PkgIterator &Pkg, + pkgCache::PkgIterator DepPkg, int const Depth, bool const PkgLoop, + bool * const Bad, bool * const Changed) +{ + if (PkgLoop == false) + List->Flag(Pkg,pkgOrderList::Loop); + bool success = false; + switch(action) + { + case UNPACK_IMMEDIATE: success = SmartUnPack(DepPkg, true, Depth + 1); break; + case UNPACK: success = SmartUnPack(DepPkg, false, Depth + 1); break; + case CONFIGURE: success = SmartConfigure(DepPkg, Depth + 1); break; + } + if (PkgLoop == false) + List->RmFlag(Pkg,pkgOrderList::Loop); + + if (success == false) + return false; + + if (Bad != NULL) + *Bad = false; + if (Changed != NULL && List->IsFlag(DepPkg,pkgOrderList::Loop) == false) + *Changed = true; + return true; +} + /*}}}*/ +// PM::SmartConfigure - Perform immediate configuration of the pkg /*{{{*/ +// --------------------------------------------------------------------- +/* This function tries to put the system in a state where Pkg can be configured. + This involves checking each of Pkg's dependencies and unpacking and + configuring packages where needed. */ +bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth) +{ + // If this is true, only check and correct and dependencies without the Loop flag + bool const PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop); + + if (Debug) { + VerIterator InstallVer = VerIterator(Cache,Cache[Pkg].InstallVer); + clog << OutputInDepth(Depth) << "SmartConfigure " << Pkg.FullName() << " (" << InstallVer.VerStr() << ")"; + if (PkgLoop) + clog << " (Only Correct Dependencies)"; + clog << endl; + } + + VerIterator const instVer = Cache[Pkg].InstVerIter(Cache); + + /* Because of the ordered list, most dependencies should be unpacked, + however if there is a loop (A depends on B, B depends on A) this will not + be the case, so check for dependencies before configuring. */ + bool Bad = false, Changed = false; + const unsigned int max_loops = _config->FindI("APT::pkgPackageManager::MaxLoopCount", 5000); + unsigned int i=0; + std::list needConfigure; + do + { + // Check each dependency and see if anything needs to be done + // so that it can be configured + Changed = false; + for (DepIterator D = instVer.DependsList(); D.end() == false; ) + { + // Compute a single dependency element (glob or) + pkgCache::DepIterator Start, End; + D.GlobOr(Start,End); + + if (End->Type != pkgCache::Dep::Depends && End->Type != pkgCache::Dep::PreDepends) + continue; + Bad = true; + + // the first pass checks if we its all good, i.e. if we have + // to do anything at all + for (DepIterator Cur = Start; true; ++Cur) + { + std::unique_ptr VList(Cur.AllTargets()); + + for (Version **I = VList.get(); *I != 0; ++I) + { + VerIterator Ver(Cache,*I); + PkgIterator DepPkg = Ver.ParentPkg(); + + // Check if the current version of the package is available and will satisfy this dependency + if (DepPkg.CurrentVer() == Ver && List->IsNow(DepPkg) == true && + List->IsFlag(DepPkg,pkgOrderList::Removed) == false && + DepPkg.State() == PkgIterator::NeedsNothing && + (Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall) + { + Bad = false; + break; + } + + // Check if the version that is going to be installed will satisfy the dependency + if (Cache[DepPkg].InstallVer != *I || List->IsNow(DepPkg) == false) + continue; + + if (PkgLoop == true) + { + if (Debug) + std::clog << OutputInDepth(Depth) << "Package " << APT::PrettyPkg(&Cache, Pkg) << " loops in SmartConfigure"; + if (List->IsFlag(DepPkg,pkgOrderList::UnPacked)) + Bad = false; + else if (Debug) + std::clog << ", but it isn't unpacked yet"; + if (Debug) + std::clog << std::endl; + } + } + + if (Cur == End || Bad == false) + break; + } + + // this dependency is in a good state, so we can stop + if (Bad == false) + { + if (Debug) + std::clog << OutputInDepth(Depth) << "Found ok dep " << APT::PrettyPkg(&Cache, Start.TargetPkg()) << std::endl; + continue; + } + + // Check for dependencies that have not been unpacked, + // probably due to loops. + for (DepIterator Cur = Start; true; ++Cur) + { + std::unique_ptr VList(Cur.AllTargets()); + + for (Version **I = VList.get(); *I != 0; ++I) + { + VerIterator Ver(Cache,*I); + PkgIterator DepPkg = Ver.ParentPkg(); + + // Check if the current version of the package is available and will satisfy this dependency + if (DepPkg.CurrentVer() == Ver && List->IsNow(DepPkg) == true && + List->IsFlag(DepPkg,pkgOrderList::Removed) == false && + DepPkg.State() == PkgIterator::NeedsNothing && + (Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall) + continue; + + // Check if the version that is going to be installed will satisfy the dependency + if (Cache[DepPkg].InstallVer != *I || List->IsNow(DepPkg) == false) + continue; + + if (PkgLoop == true) + { + if (Debug) + std::clog << OutputInDepth(Depth) << "Package " << APT::PrettyPkg(&Cache, Pkg) << " loops in SmartConfigure"; + if (List->IsFlag(DepPkg,pkgOrderList::UnPacked)) + Bad = false; + else if (Debug) + std::clog << ", but it isn't unpacked yet"; + if (Debug) + std::clog << std::endl; + } + else + { + if (Debug) + clog << OutputInDepth(Depth) << "Unpacking " << DepPkg.FullName() << " to avoid loop " << APT::PrettyDep(&Cache, Cur) << endl; + if (NonLoopingSmart(UNPACK_IMMEDIATE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false) + return false; + } + // at this point we either unpacked a Dep or we are in a loop, + // no need to unpack a second one + break; + } + + if (Cur == End || Bad == false) + break; + } + + if (Bad == false) + continue; + + needConfigure.push_back(Start); + } + if (i++ > max_loops) + return _error->Error("Internal error: MaxLoopCount reached in SmartUnPack (1) for %s, aborting", Pkg.FullName().c_str()); + } while (Changed == true); + + // now go over anything that needs configuring + Bad = false, Changed = false, i = 0; + do + { + Changed = false; + for (std::list::const_iterator D = needConfigure.begin(); D != needConfigure.end(); ++D) + { + // Compute a single dependency element (glob or) without modifying D + pkgCache::DepIterator Start, End; + { + pkgCache::DepIterator Discard = *D; + Discard.GlobOr(Start,End); + } + + if (End->Type != pkgCache::Dep::Depends && End->Type != pkgCache::Dep::PreDepends) + continue; + Bad = true; + + // Search for dependencies which are unpacked but aren't configured yet (maybe loops) + for (DepIterator Cur = Start; true; ++Cur) + { + std::unique_ptr VList(Cur.AllTargets()); + + for (Version **I = VList.get(); *I != 0; ++I) + { + VerIterator Ver(Cache,*I); + PkgIterator DepPkg = Ver.ParentPkg(); + + // Check if the version that is going to be installed will satisfy the dependency + if (Cache[DepPkg].InstallVer != *I) + continue; + + if (List->IsFlag(DepPkg,pkgOrderList::UnPacked)) + { + if (List->IsFlag(DepPkg,pkgOrderList::Loop) && PkgLoop) + { + // This dependency has already been dealt with by another SmartConfigure on Pkg + Bad = false; + break; + } + if (Debug) + std::clog << OutputInDepth(Depth) << "Configure already unpacked " << APT::PrettyPkg(&Cache, DepPkg) << std::endl; + if (NonLoopingSmart(CONFIGURE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false) + return false; + break; + + } + else if (List->IsFlag(DepPkg,pkgOrderList::Configured)) + { + Bad = false; + break; + } + } + if (Cur == End || Bad == false) + break; + } + + + if (Bad == true && Changed == false && Debug == true) + std::clog << OutputInDepth(Depth) << "Could not satisfy " << APT::PrettyDep(&Cache, *D) << std::endl; + } + if (i++ > max_loops) + return _error->Error("Internal error: MaxLoopCount reached in SmartUnPack (2) for %s, aborting", Pkg.FullName().c_str()); + } while (Changed == true); + + if (Bad == true) + return _error->Error(_("Could not configure '%s'. "),Pkg.FullName().c_str()); + + // Check for reverse conflicts. + if (CheckRBreaks(Pkg,Pkg.RevDependsList(), instVer.VerStr()) == false) + return false; + + for (PrvIterator P = instVer.ProvidesList(); P.end() == false; ++P) + if (Pkg->Group != P.OwnerPkg()->Group) + CheckRBreaks(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion()); + + if (PkgLoop) return true; + + static std::string const conf = _config->Find("PackageManager::Configure", "smart"); + static bool const ConfigurePkgs = (conf == "all" || conf == "smart"); + + if (List->IsFlag(Pkg,pkgOrderList::Configured)) + return _error->Error("Internal configure error on '%s'.", Pkg.FullName().c_str()); + + if (ConfigurePkgs == true && Configure(Pkg) == false) + return false; + + List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States); + + if ((Cache[Pkg].InstVerIter(Cache)->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same && + not List->IsFlag(Pkg, pkgOrderList::Immediate)) + for (PkgIterator P = Pkg.Group().PackageList(); + P.end() == false; P = Pkg.Group().NextPkg(P)) + { + if (Pkg == P || List->IsFlag(P,pkgOrderList::Configured) == true || + List->IsFlag(P,pkgOrderList::UnPacked) == false || + Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer && + (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)) + continue; + if (SmartConfigure(P, (Depth +1)) == false) + return false; + } + + // Sanity Check + if (List->IsFlag(Pkg,pkgOrderList::Configured) == false) + return _error->Error(_("Could not configure '%s'. "),Pkg.FullName().c_str()); + + 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, DepIterator const * const Dep) +{ + 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; + + // these breaks on M-A:same packages can be dealt with. They 'loop' by design + if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks && Dep->IsMultiArchImplicit() == true) + return true; + + // Essential packages get special treatment + bool IsEssential = false; + if ((Pkg->Flags & pkgCache::Flag::Essential) != 0) + IsEssential = true; + bool IsProtected = false; + if ((Pkg->Flags & pkgCache::Flag::Important) != 0) + IsProtected = true; + + /* Check for packages that are the dependents of essential packages and + promote them too */ + if (Pkg->CurrentVer != 0) + { + for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() == false && + IsEssential == false; ++D) + if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends) { + if ((D.ParentPkg()->Flags & pkgCache::Flag::Essential) != 0) + IsEssential = true; + if ((D.ParentPkg()->Flags & pkgCache::Flag::Important) != 0) + IsProtected = true; + } + } + + // dpkg will auto-deconfigure it, no need for the big remove hammer + if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks) + return true; + else if (IsEssential == true) + { + // FIXME: Unify messaging with Protected below. + if (_config->FindB("APT::Force-LoopBreak",false) == false) + return _error->Error(_("This installation run will require temporarily " + "removing the essential package %s due to a " + "Conflicts/Pre-Depends loop. This is often bad, " + "but if you really want to do it, activate the " + "APT::Force-LoopBreak option."),Pkg.FullName().c_str()); + } + else if (IsProtected == true) + { + // FIXME: Message should talk about Protected, not Essential, and unified. + if (_config->FindB("APT::Force-LoopBreak",false) == false) + return _error->Error(_("This installation run will require temporarily " + "removing the essential package %s due to a " + "Conflicts/Pre-Depends loop. This is often bad, " + "but if you really want to do it, activate the " + "APT::Force-LoopBreak option."),Pkg.FullName().c_str()); + } + + 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,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge); +} + /*}}}*/ +// PM::SmartUnPack - Install helper /*{{{*/ +// --------------------------------------------------------------------- +/* This puts the system in a state where it can Unpack Pkg, if Pkg is already + unpacked, or when it has been unpacked, if Immediate==true it configures it. */ +bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int const Depth) +{ + bool PkgLoop = List->IsFlag(Pkg,pkgOrderList::Loop); + + if (Debug) { + clog << OutputInDepth(Depth) << "SmartUnPack " << Pkg.FullName(); + VerIterator InstallVer = VerIterator(Cache,Cache[Pkg].InstallVer); + if (Pkg.CurrentVer() == 0) + clog << " (install version " << InstallVer.VerStr() << ")"; + else + clog << " (replace version " << Pkg.CurrentVer().VerStr() << " with " << InstallVer.VerStr() << ")"; + if (PkgLoop) + clog << " (Only Perform PreUnpack Checks)"; + if (Immediate) + clog << " immediately"; + clog << endl; + } + + VerIterator const instVer = Cache[Pkg].InstVerIter(Cache); + + /* PreUnpack Checks: This loop checks and attempts to rectify any problems that would prevent the package being unpacked. + It addresses: PreDepends, Conflicts, Obsoletes and Breaks (DpkgBreaks). Any resolutions that do not require it should + avoid configuration (calling SmartUnpack with Immediate=true), this is because when unpacking some packages with + complex dependency structures, trying to configure some packages while breaking the loops can complicate things. + This will be either dealt with if the package is configured as a dependency of Pkg (if and when Pkg is configured), + or by the ConfigureAll call at the end of the for loop in OrderInstall. */ + bool SomethingBad = false, Changed = false; + bool couldBeTemporaryRemoved = Depth != 0 && List->IsFlag(Pkg,pkgOrderList::Removed) == false; + const unsigned int max_loops = _config->FindI("APT::pkgPackageManager::MaxLoopCount", 5000); + unsigned int i = 0; + do + { + Changed = false; + for (DepIterator D = instVer.DependsList(); D.end() == false; ) + { + // Compute a single dependency element (glob or) + pkgCache::DepIterator Start, End; + D.GlobOr(Start,End); + + if (End->Type == pkgCache::Dep::PreDepends) + { + bool Bad = true; + if (Debug) + clog << OutputInDepth(Depth) << "PreDepends order for " << Pkg.FullName() << std::endl; + + // Look for easy targets: packages that are already okay + for (DepIterator Cur = Start; Bad == true; ++Cur) + { + std::unique_ptr VList(Cur.AllTargets()); + for (Version **I = VList.get(); *I != 0; ++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 && + (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall) + { + Bad = false; + if (Debug) + clog << OutputInDepth(Depth) << "Found ok package " << Pkg.FullName() << endl; + break; + } + } + if (Cur == End) + break; + } + + // Look for something that could be configured. + for (DepIterator Cur = Start; Bad == true && Cur.end() == false; ++Cur) + { + std::unique_ptr VList(Cur.AllTargets()); + for (Version **I = VList.get(); *I != 0; ++I) + { + VerIterator Ver(Cache,*I); + PkgIterator DepPkg = Ver.ParentPkg(); + + // Not the install version + if (Cache[DepPkg].InstallVer != *I) + continue; + + if (Cache[DepPkg].Keep() == true && DepPkg.State() == PkgIterator::NeedsNothing && + (Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall) + continue; + + if (List->IsFlag(DepPkg,pkgOrderList::Configured)) + { + Bad = false; + break; + } + + // check if it needs unpack or if configure is enough + if (List->IsFlag(DepPkg,pkgOrderList::UnPacked) == false) + { + // two packages pre-depending on each other can't be handled sanely + if (List->IsFlag(DepPkg,pkgOrderList::Loop) && PkgLoop) + { + // this isn't an error as there is potential for something else to satisfy it + // (like a provides or an or-group member) + if (Debug) + clog << OutputInDepth(Depth) << "Unpack loop detected between " << DepPkg.FullName() << " and " << Pkg.FullName() << endl; + continue; + } + + if (Debug) + clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << DepPkg.FullName() << endl; + if (NonLoopingSmart(UNPACK_IMMEDIATE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false) + return false; + } + else + { + if (Debug) + clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << DepPkg.FullName() << endl; + if (NonLoopingSmart(CONFIGURE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false) + return false; + } + break; + } + } + + if (Bad == true) + SomethingBad = true; + } + else if (End->Type == pkgCache::Dep::Conflicts || + End->Type == pkgCache::Dep::Obsoletes || + End->Type == pkgCache::Dep::DpkgBreaks) + { + std::unique_ptr VList(End.AllTargets()); + for (Version **I = VList.get(); *I != 0; ++I) + { + VerIterator Ver(Cache,*I); + PkgIterator ConflictPkg = Ver.ParentPkg(); + if (ConflictPkg.CurrentVer() != Ver) + { + if (Debug) + std::clog << OutputInDepth(Depth) << "Ignore not-installed version " << Ver.VerStr() << " of " << ConflictPkg.FullName() << " for " << APT::PrettyDep(&Cache, End) << std::endl; + continue; + } + + if (List->IsNow(ConflictPkg) == false) + { + if (Debug) + std::clog << OutputInDepth(Depth) << "Ignore already dealt-with version " << Ver.VerStr() << " of " << ConflictPkg.FullName() << " for " << APT::PrettyDep(&Cache, End) << std::endl; + continue; + } + + if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == true) + { + if (Debug) + clog << OutputInDepth(Depth) << "Ignoring " << APT::PrettyDep(&Cache, End) << " as " << ConflictPkg.FullName() << "was temporarily removed" << endl; + continue; + } + + if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) && PkgLoop) + { + if (End->Type == pkgCache::Dep::DpkgBreaks && End.IsMultiArchImplicit() == true) + { + if (Debug) + clog << OutputInDepth(Depth) << "Because dependency is MultiArchImplicit we ignored looping on: " << APT::PrettyPkg(&Cache, ConflictPkg) << endl; + continue; + } + if (Debug) + { + if (End->Type == pkgCache::Dep::DpkgBreaks) + clog << OutputInDepth(Depth) << "Because of breaks knot, deconfigure " << ConflictPkg.FullName() << " temporarily" << endl; + else + clog << OutputInDepth(Depth) << "Because of conflict knot, removing " << ConflictPkg.FullName() << " temporarily" << endl; + } + if (EarlyRemove(ConflictPkg, &End) == false) + return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 3); + SomethingBad = true; + continue; + } + + if (Cache[ConflictPkg].Delete() == false) + { + if (Debug) + { + clog << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to avoid " << APT::PrettyDep(&Cache, End); + if (PkgLoop == true) + clog << " (Looping)"; + clog << std::endl; + } + // we would like to avoid temporary removals and all that at best via a simple unpack + _error->PushToStack(); + if (NonLoopingSmart(UNPACK, Pkg, ConflictPkg, Depth, PkgLoop, NULL, &Changed) == false) + { + // but if it fails ignore this failure and look for alternative ways of solving + if (Debug) + { + clog << OutputInDepth(Depth) << "Avoidance unpack of " << ConflictPkg.FullName() << " failed for " << APT::PrettyDep(&Cache, End) << " ignoring:" << std::endl; + _error->DumpErrors(std::clog, GlobalError::DEBUG, false); + } + _error->RevertToStack(); + // ignorance can only happen if a) one of the offenders is already gone + if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == true) + { + if (Debug) + clog << OutputInDepth(Depth) << "But " << ConflictPkg.FullName() << " was temporarily removed in the meantime to satisfy " << APT::PrettyDep(&Cache, End) << endl; + } + else if (List->IsFlag(Pkg,pkgOrderList::Removed) == true) + { + if (Debug) + clog << OutputInDepth(Depth) << "But " << Pkg.FullName() << " was temporarily removed in the meantime to satisfy " << APT::PrettyDep(&Cache, End) << endl; + } + // or b) we can make one go (removal or dpkg auto-deconfigure) + else + { + if (Debug) + clog << OutputInDepth(Depth) << "So temporary remove/deconfigure " << ConflictPkg.FullName() << " to satisfy " << APT::PrettyDep(&Cache, End) << endl; + if (EarlyRemove(ConflictPkg, &End) == false) + return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 2); + } + } + else + _error->MergeWithStack(); + } + else + { + if (Debug) + clog << OutputInDepth(Depth) << "Removing " << ConflictPkg.FullName() << " now to avoid " << APT::PrettyDep(&Cache, End) << endl; + // no earlyremove() here as user has already agreed to the permanent removal + if (SmartRemove(ConflictPkg) == false) + return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 1); + } + } + } + } + if (i++ > max_loops) + return _error->Error("Internal error: APT::pkgPackageManager::MaxLoopCount reached in SmartConfigure for %s, aborting", Pkg.FullName().c_str()); + } while (Changed == true); + + if (SomethingBad == true) + return _error->Error("Couldn't configure %s, probably a dependency cycle.", Pkg.FullName().c_str()); + + if (couldBeTemporaryRemoved == true && List->IsFlag(Pkg,pkgOrderList::Removed) == true) + { + if (Debug) + std::clog << OutputInDepth(Depth) << "Prevent unpack as " << APT::PrettyPkg(&Cache, Pkg) << " is currently temporarily removed" << std::endl; + return true; + } + + // Check for reverse conflicts. + if (CheckRConflicts(Pkg,Pkg.RevDependsList(), + instVer.VerStr()) == false) + return false; + + for (PrvIterator P = instVer.ProvidesList(); + P.end() == false; ++P) + if (Pkg->Group != P.OwnerPkg()->Group) + CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion()); + + if (PkgLoop) + return true; + + List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States); + + if (Immediate == true && (instVer->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same) + { + /* Do lockstep M-A:same unpacking in two phases: + First unpack all installed architectures, then the not installed. + This way we avoid that M-A: enabled packages are installed before + their older non-M-A enabled packages are replaced by newer versions */ + bool const installed = Pkg->CurrentVer != 0; + if (installed == true && + (instVer != Pkg.CurrentVer() || + ((Cache[Pkg].iFlags & pkgDepCache::ReInstall) == pkgDepCache::ReInstall)) && + Install(Pkg,FileNames[Pkg->ID]) == false) + return false; + for (PkgIterator P = Pkg.Group().PackageList(); + P.end() == false; P = Pkg.Group().NextPkg(P)) + { + if (P->CurrentVer == 0 || P == Pkg || List->IsFlag(P,pkgOrderList::UnPacked) == true || + Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer && + (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)) + continue; + if (SmartUnPack(P, false, Depth + 1) == false) + return false; + } + if (installed == false && Install(Pkg,FileNames[Pkg->ID]) == false) + return false; + for (PkgIterator P = Pkg.Group().PackageList(); + P.end() == false; P = Pkg.Group().NextPkg(P)) + { + if (P->CurrentVer != 0 || P == Pkg || List->IsFlag(P,pkgOrderList::UnPacked) == true || + List->IsFlag(P,pkgOrderList::Configured) == true || + Cache[P].InstallVer == 0 || (P.CurrentVer() == Cache[P].InstallVer && + (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)) + continue; + if (SmartUnPack(P, false, Depth + 1) == false) + return false; + } + } + // packages which are already unpacked don't need to be unpacked again + else if ((instVer != Pkg.CurrentVer() || + ((Cache[Pkg].iFlags & pkgDepCache::ReInstall) == pkgDepCache::ReInstall)) && + Install(Pkg,FileNames[Pkg->ID]) == false) + return false; + + if (Immediate == true) { + // Perform immediate configuration of the package. + _error->PushToStack(); + bool configured = SmartConfigure(Pkg, Depth + 1); + _error->RevertToStack(); + + if (not configured && Debug) { + clog << OutputInDepth(Depth); + ioprintf(clog, _("Could not perform immediate configuration on '%s'. " + "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"), + Pkg.FullName().c_str(), 2); + clog << endl; + } + } + + return true; +} + /*}}}*/ +// PM::OrderInstall - Installation ordering routine /*{{{*/ +// --------------------------------------------------------------------- +/* */ +pkgPackageManager::OrderResult pkgPackageManager::OrderInstall() +{ + if (CreateOrderList() == false) + return Failed; + + Reset(); + + if (Debug == true) + clog << "Beginning to order" << endl; + + std::string const planner = _config->Find("APT::Planner", "internal"); + unsigned int flags = 0; + if (_config->FindB("APT::Immediate-Configure", true) == false) + flags |= EIPP::Request::NO_IMMEDIATE_CONFIGURATION; + else if (_config->FindB("APT::Immediate-Configure-All", false)) + flags |= EIPP::Request::IMMEDIATE_CONFIGURATION_ALL; + else if (_config->FindB("APT::Force-LoopBreak", false)) + flags |= EIPP::Request::ALLOW_TEMPORARY_REMOVE_OF_ESSENTIALS; + auto const ret = EIPP::OrderInstall(planner.c_str(), this, flags, nullptr); + if (planner != "internal") + return ret ? Completed : Failed; + + bool const ordering = + _config->FindB("PackageManager::UnpackAll",true) ? + List->OrderUnpack(FileNames) : List->OrderCritical(); + if (ordering == false) + { + _error->Error("Internal ordering error"); + return Failed; + } + + if (Debug == true) + clog << "Done ordering" << endl; + + bool DoneSomething = false; + for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I) + { + PkgIterator Pkg(Cache,*I); + + if (List->IsNow(Pkg) == false) + { + if (Debug == true) + clog << "Skipping already done " << Pkg.FullName() << endl; + continue; + } + + if (List->IsMissing(Pkg) == true) + { + if (Debug == true) + clog << "Sequence completed at " << Pkg.FullName() << endl; + if (DoneSomething == false) + { + _error->Error("Internal Error, ordering was unable to handle the media swap"); + return Failed; + } + return Incomplete; + } + + // Sanity check + if (Cache[Pkg].Keep() == true && + Pkg.State() == pkgCache::PkgIterator::NeedsNothing && + (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall) + { + _error->Error("Internal Error, trying to manipulate a kept package (%s)",Pkg.FullName().c_str()); + return Failed; + } + + // Perform a delete or an install + if (Cache[Pkg].Delete() == true) + { + if (SmartRemove(Pkg) == false) + return Failed; + } + else + if (SmartUnPack(Pkg,List->IsFlag(Pkg,pkgOrderList::Immediate),0) == false) + return Failed; + DoneSomething = true; + + if (ImmConfigureAll) { + /* ConfigureAll here to pick up and packages left unconfigured because they were unpacked in the + "PreUnpack Checks" section */ + if (!ConfigureAll()) + return Failed; + } + } + + // Final run through the configure phase + if (ConfigureAll() == false) + return Failed; + + // Sanity check + for (pkgOrderList::iterator I = List->begin(); I != List->end(); ++I) + { + if (List->IsFlag(*I,pkgOrderList::Configured) == false) + { + _error->Error("Internal error, packages left unconfigured. %s", + PkgIterator(Cache,*I).FullName().c_str()); + return Failed; + } + } + + return Completed; +} +// PM::DoInstallPostFork - Does install part that happens after the fork /*{{{*/ +// --------------------------------------------------------------------- +pkgPackageManager::OrderResult +pkgPackageManager::DoInstallPostFork(APT::Progress::PackageManager *progress) +{ + bool goResult; + goResult = Go(progress); + if(goResult == false) + return Failed; + + return Res; +} + /*}}}*/ +// PM::DoInstall - Does the installation /*{{{*/ +// --------------------------------------------------------------------- +/* This uses the filenames in FileNames and the information in the + DepCache to perform the installation of packages.*/ +pkgPackageManager::OrderResult +pkgPackageManager::DoInstall(APT::Progress::PackageManager *progress) +{ + if(DoInstallPreFork() == Failed) + return Failed; + + return DoInstallPostFork(progress); +} + /*}}}*/ -- cgit v1.2.3