CD swapping support

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

diff --git a/apt-pkg/packagemanager.cc b/apt-pkg/packagemanager.cc
index e3504f8bf7705a1336b1cb3c418d0d4a4489e830..8556687adae3653f14f548067f3db75a16228a8d 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 1.2 1998/07/09 05:41:12 jgg Exp $
+// $Id: packagemanager.cc,v 1.15 1999/07/03 03:10:35 jgg Exp $

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


@@ -14,13 +14,16 @@
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #ifdef __GNUG__
                                                                        /*}}}*/
 // Include Files                                                       /*{{{*/
 #ifdef __GNUG__

-#pragma implementation "pkglib/packagemanager.h"
+#pragma implementation "apt-pkg/packagemanager.h"

 #endif
 #endif

-#include <pkglib/packagemanager.h>
-#include <pkglib/orderlist.h>
-#include <pkglib/depcache.h>
-#include <pkglib/error.h>
-#include <pkglib/version.h>
+#include <apt-pkg/packagemanager.h>
+#include <apt-pkg/orderlist.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/version.h>
+#include <apt-pkg/acquire-item.h>
+#include <apt-pkg/algorithms.h>
+#include <apt-pkg/configuration.h>

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


@@ -30,6 +33,7 @@ pkgPackageManager::pkgPackageManager(pkgDepCache &Cache) : Cache(Cache)
 {
    FileNames = new string[Cache.Head().PackageCount];
    List = 0;
 {
    FileNames = new string[Cache.Head().PackageCount];
    List = 0;

+   Debug = _config->FindB("Debug::pkgPackageManager",false);

 }
                                                                        /*}}}*/
 // PM::PackageManager - Destructor                                     /*{{{*/
 }
                                                                        /*}}}*/
 // PM::PackageManager - Destructor                                     /*{{{*/


@@ -41,36 +45,134 @@ pkgPackageManager::~pkgPackageManager()
    delete [] FileNames;
 }
                                                                        /*}}}*/
    delete [] FileNames;
 }
                                                                        /*}}}*/

+// PM::GetArchives - Queue the archives for download                   /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
+                                   pkgRecords *Recs)
+{
+   if (CreateOrderList() == false)
+      return false;
+   
+   if (List->OrderUnpack() == 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()
 {
 // PM::FixMissing - Keep all missing packages                          /*{{{*/
 // ---------------------------------------------------------------------
 /* This is called to correct the installation when packages could not
    be downloaded. */
 bool pkgPackageManager::FixMissing()
 {

-   unsigned char *Touch = new unsigned char[Cache.Head().PackageCount];
+   pkgProblemResolver Resolve(Cache);
+
+   bool Bad = false;

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

-      // Create the status list that ResolveConflicts needs
-      if ((Cache[I].DepState & pkgDepCache::DepNowMin) == pkgDepCache::DepNowMin)
-        Touch[I->ID] = (1 << 0) | (1 << 1);
-      else
-        Touch[I->ID] = 1 << 1;
-      
+      // These don't need files

       if (Cache[I].Keep() == true)
         continue;
       if (Cache[I].Keep() == true)
         continue;

-      if (FileNames[I->ID].empty() == false || Cache[I].Delete() == true)
+      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)

         continue;
         continue;

+      
+      // Okay, this file is missing and we need it. Mark it for keep 
+      Bad = true;

       Cache.MarkKeep(I);
    }
    
       Cache.MarkKeep(I);
    }
    

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

    // Now downgrade everything that is broken
    // Now downgrade everything that is broken

-   Cache.ResolveConflicts(Touch);
-   delete [] Touch;
-
-   return Cache.BrokenCount() == 0;
+   return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;   

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

+// 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);
+   
+   bool NoImmConfigure = _config->FindB("APT::Immediate-Configure",false);
+   
+   // Generate the list of affected packages and sort it
+   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   {
+      // 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)
+      {
+        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);
+        
+        // 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);
+      }
+      
+      // Not interesting
+      if ((Cache[I].Keep() == true || 
+         Cache[I].InstVerIter(Cache) == I.CurrentVer()) && 
+         I.State() == pkgCache::PkgIterator::NeedsNothing)
+        continue;
+      
+      // Append it to the list
+      List->push_back(I);      
+   }
+   
+   return true;
+}
+                                                                       /*}}}*/

 // PM::DepAlwaysTrue - Returns true if this dep is irrelevent          /*{{{*/
 // ---------------------------------------------------------------------
 /* The restriction on provides is to eliminate the case when provides
 // PM::DepAlwaysTrue - Returns true if this dep is irrelevent          /*{{{*/
 // ---------------------------------------------------------------------
 /* The restriction on provides is to eliminate the case when provides


@@ -302,7 +404,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
            return _error->Error("Internal Error, Could not perform immediate configuraton");
       return true;
    }
            return _error->Error("Internal Error, Could not perform immediate configuraton");
       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(); 
    /* See if this packages install version has any predependencies
       that are not met by 'now' packages. */
    for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); 


@@ -393,84 +495,96 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
 // PM::OrderInstall - Installation ordering routine                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 // PM::OrderInstall - Installation ordering routine                    /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-bool pkgPackageManager::OrderInstall()
+pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()

 {
 {

-   delete List;
-   List = new pkgOrderList(Cache);
+   if (CreateOrderList() == false)
+      return Failed;
+
+   Reset();

    
    

-   // Generate the list of affected packages and sort it
-   for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
+   if (Debug == true)
+      clog << "Begining to order" << endl;
+
+   if (List->OrderUnpack(FileNames) == false)

    {
    {

-      // Consider all depends
-      if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
-      {
-        List->Flag(I,pkgOrderList::Immediate);
-        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);
-        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);
-      }
-      
-      // Not interesting
-      if ((Cache[I].Keep() == true || 
-         Cache[I].InstVerIter(Cache) == I.CurrentVer()) && 
-         I.State() == pkgCache::PkgIterator::NeedsNothing)
-        continue;
-      
-      // Append it to the list
-      List->push_back(I);
-      
-      if ((I->Flags & pkgCache::Flag::ImmediateConf) == pkgCache::Flag::ImmediateConf)
-        List->Flag(I,pkgOrderList::Immediate);
+      _error->Error("Internal ordering error");
+      return Failed;

    }
    
    }
    

-   if (List->OrderUnpack() == false)
-      return _error->Error("Internal ordering error");
+   if (Debug == true)
+      clog << "Done ordering" << endl;

 
 

+   bool DoneSomething = false;

    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
    {
       PkgIterator Pkg(Cache,*I);
    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 (Cache[Pkg].Delete() == false && FileNames[Pkg->ID].empty() == 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)
       
       // Sanity check
       if (Cache[Pkg].Keep() == true && Pkg.State() == pkgCache::PkgIterator::NeedsNothing)

-        return _error->Error("Internal Error, trying to manipulate a kept package");
+      {
+        _error->Error("Internal Error, trying to manipulate a kept package");
+        return Failed;
+      }

       
       // Perform a delete or an install
       if (Cache[Pkg].Delete() == true)
       {
         if (SmartRemove(Pkg) == false)
       
       // Perform a delete or an install
       if (Cache[Pkg].Delete() == true)
       {
         if (SmartRemove(Pkg) == false)

-           return false;        
+           return Failed;

       }
       else
         if (SmartUnPack(Pkg) == false)
       }
       else
         if (SmartUnPack(Pkg) == false)

-           return false;
+           return Failed;
+      DoneSomething = true;

    }
    
    // Final run through the configure phase
    if (ConfigureAll() == false)
    }
    
    // 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++)
 
    // Sanity check
    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)

+   {

       if (List->IsFlag(*I,pkgOrderList::Configured) == false)
       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::DoInstall - Does the installation                               /*{{{*/
 // ---------------------------------------------------------------------
 /* This uses the filenames in FileNames and the information in the
    DepCache to perform the installation of packages.*/
 }
                                                                        /*}}}*/
 // 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()

 {
 {

-   return OrderInstall() && Go();
+   OrderResult Res = OrderInstall();
+   if (Res != Failed)
+      if (Go() == false)
+        return Failed;
+   return Res;

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