]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/packagemanager.cc
fileutl: simple_buffer: Add write() and full() methods
[apt.git] / apt-pkg / packagemanager.cc
index 393f836f71c2af11895fa776728636d30f1a5253..9cbb3fbd2373c1963ad871787c3328ace880f150 100644 (file)
 #include <apt-pkg/acquire-item.h>
 #include <apt-pkg/algorithms.h>
 #include <apt-pkg/configuration.h>
-#include <apt-pkg/sptr.h>
 #include <apt-pkg/macros.h>
 #include <apt-pkg/pkgcache.h>
 #include <apt-pkg/cacheiterators.h>
 #include <apt-pkg/strutl.h>
+#include <apt-pkg/install-progress.h>
 
 #include <stddef.h>
 #include <list>
@@ -44,7 +44,7 @@ bool pkgPackageManager::SigINTStop = false;
 // ---------------------------------------------------------------------
 /* */
 pkgPackageManager::pkgPackageManager(pkgDepCache *pCache) : Cache(*pCache),
-                                                           List(NULL), Res(Incomplete)
+                                                           List(NULL), Res(Incomplete), d(NULL)
 {
    FileNames = new string[Cache.Head().PackageCount];
    Debug = _config->FindB("Debug::pkgPackageManager",false);
@@ -268,6 +268,33 @@ bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
    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
@@ -372,6 +399,8 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
    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; )
       {
@@ -383,12 +412,13 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
            continue;
         Bad = true;
 
-        // Check for dependencies that have not been unpacked, probably due to loops.
+         // 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)
         {
-           SPtrArray<Version *> VList = Cur.AllTargets();
+           std::unique_ptr<Version *[]> VList(Cur.AllTargets());
 
-           for (Version **I = VList; *I != 0; ++I)
+           for (Version **I = VList.get(); *I != 0; ++I)
            {
               VerIterator Ver(Cache,*I);
               PkgIterator DepPkg = Ver.ParentPkg();
@@ -396,7 +426,8 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
               // 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)
+                  DepPkg.State() == PkgIterator::NeedsNothing &&
+                  (Cache[DepPkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
               {
                  Bad = false;
                  break;
@@ -409,8 +440,60 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
               if (PkgLoop == true)
               {
                  if (Debug)
-                    std::clog << OutputInDepth(Depth) << "Package " << Pkg << " loops in SmartConfigure" << std::endl;
-                 Bad = false;
+                    std::clog << OutputInDepth(Depth) << "Package " << 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 " << 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 " << 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
               {
@@ -419,6 +502,8 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
                  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;
            }
 
@@ -435,6 +520,7 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
          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
    {
@@ -455,9 +541,9 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
         // Search for dependencies which are unpacked but aren't configured yet (maybe loops)
         for (DepIterator Cur = Start; true; ++Cur)
         {
-           SPtrArray<Version *> VList = Cur.AllTargets();
+           std::unique_ptr<Version *[]> VList(Cur.AllTargets());
 
-           for (Version **I = VList; *I != 0; ++I)
+           for (Version **I = VList.get(); *I != 0; ++I)
            {
               VerIterator Ver(Cache,*I);
               PkgIterator DepPkg = Ver.ParentPkg();
@@ -502,6 +588,14 @@ bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
    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","all");
@@ -666,15 +760,16 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
            // Look for easy targets: packages that are already okay
            for (DepIterator Cur = Start; Bad == true; ++Cur)
            {
-              SPtrArray<Version *> VList = Cur.AllTargets();
-              for (Version **I = VList; *I != 0; ++I)
+              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)
+                     Pkg.State() == PkgIterator::NeedsNothing &&
+                     (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
                  {
                     Bad = false;
                     if (Debug)
@@ -689,15 +784,18 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
            // Look for something that could be configured.
            for (DepIterator Cur = Start; Bad == true && Cur.end() == false; ++Cur)
            {
-              SPtrArray<Version *> VList = Cur.AllTargets();
-              for (Version **I = VList; *I != 0; ++I)
+              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 ||
-                     (Cache[DepPkg].Keep() == true && DepPkg.State() == PkgIterator::NeedsNothing))
+                 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))
@@ -709,6 +807,16 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
                  // check if it needs unpack or if 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)
@@ -732,8 +840,8 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
                  End->Type == pkgCache::Dep::Obsoletes ||
                  End->Type == pkgCache::Dep::DpkgBreaks)
         {
-           SPtrArray<Version *> VList = End.AllTargets();
-           for (Version **I = VList; *I != 0; ++I)
+           std::unique_ptr<Version *[]> VList(End.AllTargets());
+           for (Version **I = VList.get(); *I != 0; ++I)
            {
               VerIterator Ver(Cache,*I);
               PkgIterator ConflictPkg = Ver.ParentPkg();
@@ -774,7 +882,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
                        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 (2)",ConflictPkg.FullName().c_str());
+                    return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 3);
                  SomethingBad = true;
                  continue;
               }
@@ -795,8 +903,8 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
                     // 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 " << End << std::endl;
-                       _error->DumpErrors(std::clog);
+                       clog << OutputInDepth(Depth) << "Avoidance unpack of " << ConflictPkg.FullName() << " failed for " << 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
@@ -816,7 +924,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
                        if (Debug)
                           clog << OutputInDepth(Depth) << "So temprorary remove/deconfigure " << ConflictPkg.FullName() << " to satisfy " << End << endl;
                        if (EarlyRemove(ConflictPkg, &End) == false)
-                          return _error->Error("Internal Error, Could not early remove %s (2)",ConflictPkg.FullName().c_str());
+                          return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 2);
                     }
                  }
                  else
@@ -828,7 +936,7 @@ bool pkgPackageManager::SmartUnPack(PkgIterator Pkg, bool const Immediate, int c
                     clog << OutputInDepth(Depth) << "Removing " << ConflictPkg.FullName() << " now to avoid " << End << endl;
                  // no earlyremove() here as user has already agreed to the permanent removal
                  if (SmartRemove(Pkg) == false)
-                    return _error->Error("Internal Error, Could not early remove %s (1)",ConflictPkg.FullName().c_str());
+                    return _error->Error("Internal Error, Could not early remove %s (%d)",ConflictPkg.FullName().c_str(), 1);
               }
            }
         }
@@ -1011,7 +1119,6 @@ pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
 // PM::DoInstallPostFork - compat /*{{{*/
 // ---------------------------------------------------------------------
                                                                        /*}}}*/
-#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 pkgPackageManager::OrderResult
 pkgPackageManager::DoInstallPostFork(int statusFd)
 {
@@ -1031,24 +1138,12 @@ pkgPackageManager::DoInstallPostFork(APT::Progress::PackageManager *progress)
    if(goResult == false) 
       return Failed;
    
-   return Res;
-};
-#else
-pkgPackageManager::OrderResult
-pkgPackageManager::DoInstallPostFork(int statusFd)
-{
-   bool goResult = Go(statusFd);
-   if(goResult == false) 
-      return Failed;
-   
    return Res;
 }
-#endif
                                                                        /*}}}*/ 
 // PM::DoInstall - Does the installation                               /*{{{*/
 // ---------------------------------------------------------------------
 /* compat */
-#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 pkgPackageManager::OrderResult 
 pkgPackageManager::DoInstall(int statusFd)
 {
@@ -1058,21 +1153,11 @@ pkgPackageManager::DoInstall(int statusFd)
     delete progress;
     return res;
  }
-#else
-pkgPackageManager::OrderResult pkgPackageManager::DoInstall(int statusFd)
-{
-   if(DoInstallPreFork() == Failed)
-      return Failed;
-
-   return DoInstallPostFork(statusFd);
-}
-#endif
                                                                        /*}}}*/ 
 // PM::DoInstall - Does the installation                               /*{{{*/
 // ---------------------------------------------------------------------
 /* This uses the filenames in FileNames and the information in the
    DepCache to perform the installation of packages.*/
-#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
 pkgPackageManager::OrderResult 
 pkgPackageManager::DoInstall(APT::Progress::PackageManager *progress)
 {
@@ -1081,5 +1166,4 @@ pkgPackageManager::DoInstall(APT::Progress::PackageManager *progress)
    
    return DoInstallPostFork(progress);
 }
-#endif
                                                                        /*}}}*/