* added APT::NeverAutoRemove (a list of regexp for package names that should never...

[apt.git] / apt-pkg / packagemanager.cc

diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
index 8556687adae3653f14f548067f3db75a16228a8d..71a0dd034cc649bbdf8ecf2b745a948c43bcf236 100644 (file)
--- a/apt-pkg/packagemanager.cc
+++ b/apt-pkg/packagemanager.cc
@@ -1,6 +1,6 @@
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/
 // -*- mode: cpp; mode: fold -*-
 // Description                                                         /*{{{*/

-// $Id: packagemanager.cc,v 1.15 1999/07/03 03:10:35 jgg Exp $
+// $Id: packagemanager.cc,v 1.30 2003/04/27 03:04:15 doogie Exp $

 /* ######################################################################
 
    Package Manager - Abstacts the package manager
 /* ######################################################################
 
    Package Manager - Abstacts the package manager


@@ -16,6 +16,7 @@
 #ifdef __GNUG__
 #pragma implementation "apt-pkg/packagemanager.h"
 #endif
 #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/packagemanager.h>
 #include <apt-pkg/orderlist.h>
 #include <apt-pkg/depcache.h>


@@ -24,12 +25,18 @@
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/configuration.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>

                                                                        /*}}}*/
 
                                                                        /*}}}*/
 

+using namespace std;
+

 // PM::PackageManager - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // PM::PackageManager - Constructor                                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgPackageManager::pkgPackageManager(pkgDepCache &Cache) : Cache(Cache)
+pkgPackageManager::pkgPackageManager(pkgDepCache *pCache) : Cache(*pCache)

 {
    FileNames = new string[Cache.Head().PackageCount];
    List = 0;
 {
    FileNames = new string[Cache.Head().PackageCount];
    List = 0;


@@ -87,31 +94,24 @@ bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
 /* This is called to correct the installation when packages could not
    be downloaded. */
 bool pkgPackageManager::FixMissing()
 /* This is called to correct the installation when packages could not
    be downloaded. */
 bool pkgPackageManager::FixMissing()

-{
-   pkgProblemResolver Resolve(Cache);
-
+{   
+   pkgProblemResolver Resolve(&Cache);
+   List->SetFileList(FileNames);
+   

    bool Bad = false;
    for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    {
    bool Bad = false;
    for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
    {

-      // These don't need files
-      if (Cache[I].Keep() == true)
-        continue;
-      if (Cache[I].Delete() == true)
-        continue;
-      
-      // We have a filename
-      if (FileNames[I->ID].empty() == false)
-        continue;
-      
-      // Skip Packages that need configure only.
-      if (I.State() == pkgCache::PkgIterator::NeedsConfigure && 
-         Cache[I].Keep() == true)
+      if (List->IsMissing(I) == false)

         continue;
         continue;

-      
+   

       // Okay, this file is missing and we need it. Mark it for keep 
       Bad = true;
       Cache.MarkKeep(I);
    }
       // Okay, this file is missing and we need it. Mark it for keep 
       Bad = true;
       Cache.MarkKeep(I);
    }

+ 
+   // We have to empty the list otherwise it will not have the new changes
+   delete List;
+   List = 0;

    
    if (Bad == false)
       return true;
    
    if (Bad == false)
       return true;


@@ -131,13 +131,17 @@ bool pkgPackageManager::CreateOrderList()
       return true;
    
    delete List;
       return true;
    
    delete List;

-   List = new pkgOrderList(Cache);
+   List = new pkgOrderList(&Cache);

    
    

-   bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false);
+   bool 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++)
    {
    
    // 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 dependends for immediate configuration
       if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential ||
           (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) &&
       // 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) &&


@@ -163,7 +167,10 @@ bool pkgPackageManager::CreateOrderList()
       // Not interesting
       if ((Cache[I].Keep() == true || 
          Cache[I].InstVerIter(Cache) == I.CurrentVer()) && 
       // 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
         continue;
       
       // Append it to the list


@@ -197,21 +204,25 @@ bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
 {
    for (;D.end() == false; 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;
       
         continue;
       

-      if (D.ParentPkg() == Pkg)
+      // Ignore self conflicts, ignore conflicts from irrelevent versions
+      if (D.ParentPkg() == Pkg || D.ParentVer() != D.ParentPkg().CurrentVer())

         continue;
       
         continue;
       

-      if (pkgCheckDep(D.TargetVer(),Ver,D->CompareOp) == false)
+      if (Cache.VS().CheckDep(Ver,D->CompareOp,D.TargetVer()) == false)

         continue;
 
         continue;
 

-      if (List->IsNow(Pkg) == false)
-        continue;
-      

       if (EarlyRemove(D.ParentPkg()) == false)
       if (EarlyRemove(D.ParentPkg()) == false)

-        return false;
-   }  
+        return _error->Error("Reverse conflicts early remove for package '%s' failed",
+                             Pkg.Name());
+   }

    return true;
 }
                                                                        /*}}}*/
    return true;
 }
                                                                        /*}}}*/


@@ -221,7 +232,7 @@ bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
    that the final configuration is valid. */
 bool pkgPackageManager::ConfigureAll()
 {
    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++)
    
    // Populate the order list
    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)


@@ -252,14 +263,14 @@ bool pkgPackageManager::ConfigureAll()
    of it's dependents. */
 bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
 {
    of it's dependents. */
 bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
 {

-   pkgOrderList OList(Cache);
+   pkgOrderList OList(&Cache);

 
    if (DepAdd(OList,Pkg) == false)
       return false;
    
    if (OList.OrderConfigure() == false)
       return false;
 
    if (DepAdd(OList,Pkg) == false)
       return false;
    
    if (OList.OrderConfigure() == false)
       return false;

-
+   

    // Perform the configuring
    for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
    {
    // Perform the configuring
    for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
    {


@@ -289,8 +300,7 @@ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
       return true;
    if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
       return false;
       return true;
    if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
       return false;

-   
-   
+      

    // Put the package on the list
    OList.push_back(Pkg);
    OList.Flag(Pkg,pkgOrderList::Added);
    // Put the package on the list
    OList.push_back(Pkg);
    OList.Flag(Pkg,pkgOrderList::Added);


@@ -315,7 +325,7 @@ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
         if (Bad == false)
            continue;
 
         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);
         for (Version **I = VList; *I != 0 && Bad == true; I++)
         {
            VerIterator Ver(Cache,*I);


@@ -333,12 +343,12 @@ bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
            if (Cache[Pkg].InstallVer != *I || 
                (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
               continue;
            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;
         }
            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 (Bad == true)


@@ -369,6 +379,32 @@ bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
    // Woops, it will not be re-installed!
    if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
       return false;
    // 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)
    
    bool Res = SmartRemove(Pkg);
    if (Cache[Pkg].Delete() == false)


@@ -386,7 +422,7 @@ bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
       return true;
 
    List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
       return true;
 
    List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);

-   return Remove(Pkg);
+   return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);

 }
                                                                        /*}}}*/
 // PM::SmartUnPack - Install helper                                    /*{{{*/
 }
                                                                        /*}}}*/
 // PM::SmartUnPack - Install helper                                    /*{{{*/


@@ -401,19 +437,24 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
       List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
       if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
         if (SmartConfigure(Pkg) == false)
       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("Internal Error, Could not perform immediate configuration (1) on %s",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(); 
       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)

       {
         // Look for possible ok targets.
       {
         // 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++)
         {
         bool Bad = true;
         for (Version **I = VList; *I != 0 && Bad == true; I++)
         {


@@ -442,20 +483,28 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
 
            Bad = !SmartConfigure(Pkg);
         }
 
            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.. */
       {
         /* 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);
         for (Version **I = VList; *I != 0; I++)
         {
            VerIterator Ver(Cache,*I);


@@ -468,13 +517,14 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
                  return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
            }
         }
                  return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
            }
         }

-        delete [] VList;

       }
    }
 
    // Check for reverse conflicts.
       }
    }
 
    // 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());
    for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList(); 
        P.end() == false; P++)
       CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());


@@ -487,7 +537,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
    // Perform immedate configuration of the package.
    if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
       if (SmartConfigure(Pkg) == false)
    // 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("Internal Error, Could not perform immediate configuration (2) on %s",Pkg.Name());

    
    return true;
 }
    
    return true;
 }


@@ -526,10 +576,10 @@ pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
         continue;
       }
       
         continue;
       }
       

-      if (Cache[Pkg].Delete() == false && FileNames[Pkg->ID].empty() == true)
+      if (List->IsMissing(Pkg) == true)

       {
         if (Debug == true)
       {
         if (Debug == true)

-           clog << "Sequence completed at" << Pkg.Name() << endl;
+           clog << "Sequence completed at " << Pkg.Name() << endl;

         if (DoneSomething == false)
         {
            _error->Error("Internal Error, ordering was unable to handle the media swap");
         if (DoneSomething == false)
         {
            _error->Error("Internal Error, ordering was unable to handle the media swap");


@@ -539,7 +589,9 @@ pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
       }
       
       // Sanity check
       }
       
       // Sanity check

-      if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)
+      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");
         return Failed;
       {
         _error->Error("Internal Error, trying to manipulate a kept package");
         return Failed;


@@ -575,16 +627,3 @@ pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
    return Completed;
 }
                                                                        /*}}}*/
    return Completed;
 }
                                                                        /*}}}*/

-// 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()
-{
-   OrderResult Res = OrderInstall();
-   if (Res != Failed)
-      if (Go() == false)
-        return Failed;
-   return Res;
-}
-                                                                       /*}}}*/