]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/packagemanager.cc
rewrite the pseudo package reinstaller to be more intelligent
[apt.git] / apt-pkg / packagemanager.cc
index 3fc88586bcd2c03fd720dddc04d2084287a507f9..eef79cccd381443da9de4a702c4eb555cf9a61ef 100644 (file)
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
-// $Id: packagemanager.cc,v 1.10 1998/12/10 04:22:46 jgg Exp $
+// $Id: packagemanager.cc,v 1.30 2003/04/27 03:04:15 doogie Exp $
 /* ######################################################################
 
    Package Manager - Abstacts the package manager
@@ -13,9 +13,6 @@
    ##################################################################### */
                                                                        /*}}}*/
 // 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/acquire-item.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/configuration.h>
+#include <apt-pkg/sptr.h>
+    
+#include <apti18n.h>    
+#include <iostream>
+#include <fcntl.h> 
                                                                        /*}}}*/
+using namespace std;
 
 // PM::PackageManager - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-pkgPackageManager::pkgPackageManager(pkgDepCache &Cache) : Cache(Cache)
+pkgPackageManager::pkgPackageManager(pkgDepCache *pCache) : Cache(*pCache)
 {
    FileNames = new string[Cache.Head().PackageCount];
    List = 0;
@@ -54,21 +57,33 @@ bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
    if (CreateOrderList() == false)
       return false;
    
-   if (List->OrderUnpack() == 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)
+      if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure && 
+         Cache[Pkg].Keep() == true)
         continue;
-      
+
+      // Skip already processed packages
+      if (List->IsNow(Pkg) == false)
+        continue;
+
+      if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == true)
+        continue;
+
       new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
                        FileNames[Pkg->ID]);
    }
@@ -81,66 +96,115 @@ bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
 /* This is called to correct the installation when packages could not
    be downloaded. */
 bool pkgPackageManager::FixMissing()
-{
-   pkgProblemResolver Resolve(Cache);
-   
+{   
+   pkgDepCache::ActionGroup group(Cache);
+   pkgProblemResolver Resolve(&Cache);
+   List->SetFileList(FileNames);
+
+   bool Bad = false;
    for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    {
-     if (Cache[I].Keep() == true)
+      if (List->IsMissing(I) == false)
         continue;
-      if (FileNames[I->ID].empty() == false || Cache[I].Delete() == true)
-        continue;
-      Cache.MarkKeep(I);
+   
+      // 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 recursivly                        /*{{{*/
+// ---------------------------------------------------------------------
+/* This adds the immediate flag to the pkg and recursively to the
+   dependendies 
+ */
+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 " << D.TargetPkg() << " cause of " << D.DepType() << " " << I.Name() << 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);
+   List = new pkgOrderList(&Cache);
+   
+   static bool const NoImmConfigure = !_config->FindB("APT::Immediate-Configure",true);
    
    // Generate the list of affected packages and sort it
    for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    {
-      // Mark the package for immediate configuration
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+      // Ignore no-version packages
+      if (I->VersionList == 0)
+        continue;
+      
+      // 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)
       {
+        if(Debug)
+           clog << "CreateOrderList(): Adding Immediate flag for " << I.Name() << endl;
         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);
+
+        // Look for other install packages to make immediate configurea
+        ImmediateAdd(I, true);
         
         // 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);
+        ImmediateAdd(I, false);
       }
       
       // Not interesting
       if ((Cache[I].Keep() == true || 
          Cache[I].InstVerIter(Cache) == I.CurrentVer()) && 
-         I.State() == pkgCache::PkgIterator::NeedsNothing)
+         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);
-      
-      if ((I->Flags & pkgCache::Flag::ImmediateConf) == pkgCache::Flag::ImmediateConf)
-        List->Flag(I,pkgOrderList::Immediate);
+      List->push_back(I);      
    }
    
    return true;
@@ -170,21 +234,25 @@ bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
 {
    for (;D.end() == false; D++)
    {
-      if (D->Type != pkgCache::Dep::Conflicts)
+      if (D->Type != pkgCache::Dep::Conflicts &&
+         D->Type != pkgCache::Dep::Obsoletes)
+        continue;
+
+      // The package hasnt been changed
+      if (List->IsNow(Pkg) == false)
         continue;
       
-      if (D.ParentPkg() == Pkg)
+      // Ignore self conflicts, ignore conflicts from irrelevent versions
+      if (D.ParentPkg() == Pkg || D.ParentVer() != D.ParentPkg().CurrentVer())
         continue;
       
-      if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
+      if (Cache.VS().CheckDep(Ver,D->CompareOp,D.TargetVer()) == false)
         continue;
 
-      if (List->IsNow(Pkg) == false)
-        continue;
-      
       if (EarlyRemove(D.ParentPkg()) == false)
-        return false;
-   }  
+        return _error->Error("Reverse conflicts early remove for package '%s' failed",
+                             Pkg.Name());
+   }
    return true;
 }
                                                                        /*}}}*/
@@ -194,7 +262,7 @@ bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
    that the final configuration is valid. */
 bool pkgPackageManager::ConfigureAll()
 {
-   pkgOrderList OList(Cache);
+   pkgOrderList OList(&Cache);
    
    // Populate the order list
    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
@@ -204,13 +272,18 @@ bool pkgPackageManager::ConfigureAll()
    
    if (OList.OrderConfigure() == false)
       return false;
-   
+
+   std::string const conf = _config->Find("PackageManager::Configure","all");
+   bool const ConfigurePkgs = (conf == "all");
+
    // Perform the configuring
    for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
    {
       PkgIterator Pkg(Cache,*I);
-      
-      if (Configure(Pkg) == false)
+
+      if (ConfigurePkgs == true &&
+         pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
+         Configure(Pkg) == false)
         return false;
       
       List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
@@ -225,20 +298,29 @@ bool pkgPackageManager::ConfigureAll()
    of it's dependents. */
 bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
 {
-   pkgOrderList OList(Cache);
+   if (Debug == true)
+      clog << "SmartConfigure " << Pkg.Name() << endl;
+
+   pkgOrderList OList(&Cache);
 
    if (DepAdd(OList,Pkg) == false)
       return false;
-   
-   if (OList.OrderConfigure() == false)
-      return false;
+
+   static std::string const conf = _config->Find("PackageManager::Configure","all");
+   static bool const ConfigurePkgs = (conf == "all" || conf == "smart");
+
+   if (ConfigurePkgs == true)
+      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)
+      if (ConfigurePkgs == true &&
+         pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
+         Configure(Pkg) == false)
         return false;
       
       List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
@@ -246,8 +328,9 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
 
    // Sanity Check
    if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
-      return _error->Error("Internal error, could not immediate configure %s",Pkg.Name());
-   
+      return _error->Error(_("Could not perform immediate configuration on '%s'."
+                       "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),1);
+
    return true;
 }
                                                                        /*}}}*/
@@ -262,8 +345,10 @@ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
       return true;
    if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
       return false;
-   
-   
+
+   if (Debug) 
+      std::clog << OutputInDepth(Depth) << "DepAdd: " << Pkg.Name() << std::endl;
+      
    // Put the package on the list
    OList.push_back(Pkg);
    OList.Flag(Pkg,pkgOrderList::Added);
@@ -288,7 +373,7 @@ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
         if (Bad == false)
            continue;
 
-        Version **VList = D.AllTargets();
+        SPtrArray<Version *> VList = D.AllTargets();
         for (Version **I = VList; *I != 0 && Bad == true; I++)
         {
            VerIterator Ver(Cache,*I);
@@ -306,16 +391,18 @@ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
            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)
       {
+        if (Debug) 
+           std::clog << OutputInDepth(Depth) << "DepAdd FAILS on: " << Pkg.Name() << std::endl;
         OList.Flag(Pkg,0,pkgOrderList::Added);
         OList.pop_back();
         Depth--;
@@ -342,6 +429,32 @@ bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
    // Woops, it will not be re-installed!
    if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
       return false;
+
+   // Essential packages get special treatment
+   bool IsEssential = false;
+   if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
+      IsEssential = true;
+
+   /* Check for packages that are the dependents of essential packages and 
+      promote them too */
+   if (Pkg->CurrentVer != 0)
+   {
+      for (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 (IsEssential == true)
+   {
+      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.Name());
+   }
    
    bool Res = SmartRemove(Pkg);
    if (Cache[Pkg].Delete() == false)
@@ -359,7 +472,12 @@ bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
       return true;
 
    List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
-   return Remove(Pkg);
+
+   if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
+      return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
+   else
+      return SmartRemove(Pkg.Group().FindPkg("all"));
+   return true;
 }
                                                                        /*}}}*/
 // PM::SmartUnPack - Install helper                                    /*{{{*/
@@ -374,19 +492,28 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
       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 _error->Error(_("Could not perform immediate configuration on already unpacked '%s'."
+                       "Please see man 5 apt.conf under APT::Immediate-Configure for details."),Pkg.Name());
       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++)
+       D.end() == false; )
    {
-      if (D->Type == pkgCache::Dep::PreDepends)
+      // Compute a single dependency element (glob or)
+      pkgCache::DepIterator Start;
+      pkgCache::DepIterator End;
+      D.GlobOr(Start,End);
+      
+      while (End->Type == pkgCache::Dep::PreDepends)
       {
+        if (Debug == true)
+           clog << "PreDepends order for " << Pkg.Name() << std::endl;
+
         // Look for possible ok targets.
-        Version **VList = D.AllTargets();
+        SPtrArray<Version *> VList = Start.AllTargets();
         bool Bad = true;
         for (Version **I = VList; *I != 0 && Bad == true; I++)
         {
@@ -398,6 +525,8 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
                Pkg.State() == PkgIterator::NeedsNothing)
            {
               Bad = false;
+              if (Debug == true)
+                 clog << "Found ok package " << Pkg.Name() << endl;
               continue;
            }
         }
@@ -413,22 +542,32 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
                (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
               continue;
 
+           if (Debug == true)
+              clog << "Trying to SmartConfigure " << Pkg.Name() << endl;
            Bad = !SmartConfigure(Pkg);
         }
-        
-        delete [] VList;
-        
-        if (Bad == true)
-           return _error->Error("Internal Error, Couldn't configure a pre-depend");
 
-        continue;
+        /* If this or element did not match then continue on to the
+           next or element until a matching element is found */
+        if (Bad == true)
+        {
+           // This triggers if someone make a pre-depends/depend loop.
+           if (Start == End)
+              return _error->Error("Couldn't configure pre-depend %s for %s, "
+                                   "probably a dependency cycle.",
+                                   End.TargetPkg().Name(),Pkg.Name());
+           Start++;
+        }
+        else
+           break;
       }
       
-      if (D->Type == pkgCache::Dep::Conflicts)
+      if (End->Type == pkgCache::Dep::Conflicts || 
+         End->Type == pkgCache::Dep::Obsoletes)
       {
         /* Look for conflicts. Two packages that are both in the install
            state cannot conflict so we don't check.. */
-        Version **VList = D.AllTargets();
+        SPtrArray<Version *> VList = End.AllTargets();
         for (Version **I = VList; *I != 0; I++)
         {
            VerIterator Ver(Cache,*I);
@@ -441,26 +580,40 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
                  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());
+   if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
+                  Cache[Pkg].InstVerIter(Cache).VerStr()) == false)
+      return false;
+   
    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;
-   
+
+   if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
+   {
+      if(Install(Pkg,FileNames[Pkg->ID]) == false)
+         return false;
+   } else {
+      // Pseudo packages will not be unpacked - instead we will do this
+      // for the "real" package, but only once and if it is already
+      // configured we don't need to unpack it again…
+      PkgIterator const P = Pkg.Group().FindPkg("all");
+      if (List->IsFlag(P,pkgOrderList::UnPacked) != true &&
+         List->IsFlag(P,pkgOrderList::Configured) != true) {
+        if (SmartUnPack(P) == 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 _error->Error(_("Could not perform immediate configuration on '%s'."
+                       "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),2);
    
    return true;
 }
@@ -468,58 +621,116 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
 // PM::OrderInstall - Installation ordering routine                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
-bool pkgPackageManager::OrderInstall()
+pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
 {
    if (CreateOrderList() == false)
-      return false;
+      return Failed;
+
+   Reset();
    
    if (Debug == true)
-      clog << "Begining to order" << endl;
-   
-   if (List->OrderUnpack() == false)
-      return _error->Error("Internal ordering error");
+      clog << "Beginning to order" << endl;
 
+   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.Name() << endl;
+        continue;
+      }
+      
+      if (List->IsMissing(Pkg) == true)
+      {
+        if (Debug == true)
+           clog << "Sequence completed at " << Pkg.Name() << 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)
-        return _error->Error("Internal Error, trying to manipulate a kept package");
+      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.Name());
+        return Failed;
+      }
       
       // Perform a delete or an install
       if (Cache[Pkg].Delete() == true)
       {
         if (SmartRemove(Pkg) == false)
-           return false;        
+           return Failed;
       }
       else
         if (SmartUnPack(Pkg) == false)
-           return false;
+           return Failed;
+      DoneSomething = true;
    }
-   
+
    // Final run through the configure phase
    if (ConfigureAll() == false)
-      return false;
+      return Failed;
 
    // 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;
+      {
+        _error->Error("Internal error, packages left unconfigured. %s",
+                      PkgIterator(Cache,*I).Name());
+        return Failed;
+      }
+   }   
+        
+   return Completed;
 }
                                                                        /*}}}*/
+// PM::DoInstallPostFork - Does install part that happens after the fork /*{{{*/
+// ---------------------------------------------------------------------
+pkgPackageManager::OrderResult 
+pkgPackageManager::DoInstallPostFork(int statusFd)
+{
+      if(statusFd > 0)
+         // FIXME: use SetCloseExec here once it taught about throwing
+        //        exceptions instead of doing _exit(100) on failure
+        fcntl(statusFd,F_SETFD,FD_CLOEXEC); 
+      bool goResult = Go(statusFd);
+      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.*/
-bool pkgPackageManager::DoInstall()
+pkgPackageManager::OrderResult pkgPackageManager::DoInstall(int statusFd)
 {
-   return OrderInstall() && Go();
+   if(DoInstallPreFork() == Failed)
+      return Failed;
+   
+   return DoInstallPostFork(statusFd);
 }
                                                                        /*}}}*/