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-rw-r--r--apt-pkg/packagemanager.cc1172
1 files changed, 1172 insertions, 0 deletions
diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
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+++ b/apt-pkg/packagemanager.cc
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+// -*- mode: cpp; mode: fold -*-
+// Description /*{{{*/
+/* ######################################################################
+
+ Package Manager - Abstacts 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 <config.h>
+
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/algorithms.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/edsp.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/install-progress.h>
+#include <apt-pkg/macros.h>
+#include <apt-pkg/orderlist.h>
+#include <apt-pkg/packagemanager.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/prettyprinters.h>
+#include <apt-pkg/strutl.h>
+#include <apt-pkg/version.h>
+
+#include <iostream>
+#include <list>
+#include <string>
+#include <stddef.h>
+
+#include <apti18n.h>
+ /*}}}*/
+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<DepIterator> 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<Version *[]> 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<Version *[]> 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<DepIterator>::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<Version *[]> 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;
+ }
+ }
+
+ 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());
+ }
+ // dpkg will auto-deconfigure it, no need for the big remove hammer
+ else if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks)
+ return true;
+ 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<Version *[]> 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<Version *[]> 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<Version *[]> 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);
+}
+ /*}}}*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 04:56:07 +0000