]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/depcache.cc
* apt-pkg/depcache.cc:
[apt.git] / apt-pkg / depcache.cc
index bc663a8e954cfe811fea2efb92e1325b65719789..4a8e53eb333c8a1ce5d1dbb98da1db1e5aa00a8c 100644 (file)
@@ -10,6 +10,7 @@
 // Include Files                                                       /*{{{*/
 #include <apt-pkg/depcache.h>
 #include <apt-pkg/version.h>
+#include <apt-pkg/versionmatch.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/algorithms.h>
@@ -227,7 +228,7 @@ bool pkgDepCache::writeStateFile(OpProgress *prog, bool InstalledOnly)      /*{{{*/
    // if it does not exist, create a empty one
    if(!FileExists(state)) 
    {
-      StateFile.Open(state, FileFd::WriteEmpty);
+      StateFile.Open(state, FileFd::WriteAtomic);
       StateFile.Close();
    }
 
@@ -1149,7 +1150,7 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge,
       return;
 
    if (DebugMarker == true)
-      std::clog << OutputInDepth(Depth) << "MarkDelete " << Pkg << " FU=" << FromUser << std::endl;
+      std::clog << OutputInDepth(Depth) << (rPurge ? "MarkPurge " : "MarkDelete ") << Pkg << " FU=" << FromUser << std::endl;
 
    RemoveSizes(Pkg);
    RemoveStates(Pkg);
@@ -1167,6 +1168,15 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge,
    // if we remove the pseudo package, we also need to remove the "real"
    if (Pkg->CurrentVer != 0 && Pkg.CurrentVer().Pseudo() == true)
       MarkDelete(Pkg.Group().FindPkg("all"), rPurge, Depth+1, FromUser);
+   else if (rPurge == true && Pkg->CurrentVer == 0 &&
+           Pkg->CurrentState != pkgCache::State::NotInstalled &&
+           strcmp(Pkg.Arch(), "all") != 0)
+   {
+      PkgIterator const allPkg = Pkg.Group().FindPkg("all");
+      if (allPkg.end() == false && allPkg->CurrentVer == 0 &&
+         allPkg->CurrentState != pkgCache::State::NotInstalled)
+        MarkDelete(allPkg, rPurge, Depth+1, FromUser);
+   }
 }
                                                                        /*}}}*/
 // DepCache::IsDeleteOk - check if it is ok to remove this package     /*{{{*/
@@ -1183,6 +1193,16 @@ bool pkgDepCache::IsDeleteOk(PkgIterator const &Pkg,bool rPurge,
         std::clog << OutputInDepth(Depth) << "Hold prevents MarkDelete of " << Pkg << " FU=" << FromUser << std::endl;
       return false;
    }
+   else if (FromUser == false && Pkg->CurrentVer == 0)
+   {
+      StateCache &P = PkgState[Pkg->ID];
+      if (P.InstallVer != 0 && P.Status == 2 && (P.Flags & Flag::Auto) != Flag::Auto)
+      {
+        if (DebugMarker == true)
+           std::clog << OutputInDepth(Depth) << "Manual install request prevents MarkDelete of " << Pkg << std::endl;
+        return false;
+      }
+   }
    return true;
 }
                                                                        /*}}}*/
@@ -1425,10 +1445,16 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
            VerIterator Ver(*this,*I);
            PkgIterator Pkg = Ver.ParentPkg();
 
-           if (Start->Type != Dep::DpkgBreaks)
-              MarkDelete(Pkg,false,Depth + 1, false);
-           else if (PkgState[Pkg->ID].CandidateVer != *I)
+           /* The List includes all packages providing this dependency,
+              even providers which are not installed, so skip them. */
+           if (PkgState[Pkg->ID].InstallVer == 0)
+              continue;
+
+           if (PkgState[Pkg->ID].CandidateVer != *I &&
+               Start->Type == Dep::DpkgBreaks)
               MarkInstall(Pkg,true,Depth + 1, false, ForceImportantDeps);
+           else
+              MarkDelete(Pkg,false,Depth + 1, false);
         }
         continue;
       }      
@@ -1485,11 +1511,15 @@ void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
 /* */
 void pkgDepCache::SetCandidateVersion(VerIterator TargetVer, bool const &Pseudo)
 {
-   ActionGroup group(*this);
 
    pkgCache::PkgIterator Pkg = TargetVer.ParentPkg();
    StateCache &P = PkgState[Pkg->ID];
 
+   if (P.CandidateVer == TargetVer)
+      return;
+
+   ActionGroup group(*this);
+
    RemoveSizes(Pkg);
    RemoveStates(Pkg);
 
@@ -1524,7 +1554,170 @@ void pkgDepCache::SetCandidateVersion(VerIterator TargetVer, bool const &Pseudo)
       }
    }
 }
+                                                                       /*}}}*/
+// DepCache::SetCandidateRelease - Change the candidate version                /*{{{*/
+// ---------------------------------------------------------------------
+/* changes the candidate of a package and walks over all its dependencies
+   to check if it needs to change the candidate of the dependency, too,
+   to reach a installable versionstate */
+bool pkgDepCache::SetCandidateRelease(pkgCache::VerIterator TargetVer,
+                                       std::string const &TargetRel)
+{
+   std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > Changed;
+   return SetCandidateRelease(TargetVer, TargetRel, Changed);
+}
+bool pkgDepCache::SetCandidateRelease(pkgCache::VerIterator TargetVer,
+                                       std::string const &TargetRel,
+                                       std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > &Changed)
+{
+   SetCandidateVersion(TargetVer);
+
+   if (TargetRel == "installed" || TargetRel == "candidate") // both doesn't make sense in this context
+      return true;
+
+   pkgVersionMatch Match(TargetRel, pkgVersionMatch::Release);
+   // save the position of the last element we will not undo - if we have to
+   std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::iterator newChanged = --(Changed.end());
+
+   for (pkgCache::DepIterator D = TargetVer.DependsList(); D.end() == false; ++D)
+   {
+      if (D->Type != pkgCache::Dep::PreDepends && D->Type != pkgCache::Dep::Depends &&
+         ((D->Type != pkgCache::Dep::Recommends && D->Type != pkgCache::Dep::Suggests) ||
+          IsImportantDep(D) == false))
+        continue;
+
+      // walk over an or-group and check if we need to do anything
+      // for simpilicity no or-group is handled as a or-group including one dependency
+      pkgCache::DepIterator Start = D;
+      bool itsFine = false;
+      for (bool stillOr = true; stillOr == true; ++Start)
+      {
+        stillOr = (Start->CompareOp & Dep::Or) == Dep::Or;
+        pkgCache::PkgIterator const P = Start.TargetPkg();
+        // virtual packages can't be a solution
+        if (P.end() == true || (P->ProvidesList == 0 && P->VersionList == 0))
+           continue;
+        pkgCache::VerIterator const Cand = PkgState[P->ID].CandidateVerIter(*this);
+        // no versioned dependency - but is it installable?
+        if (Start.TargetVer() == 0 || Start.TargetVer()[0] == '\0')
+        {
+           // Check if one of the providers is installable
+           if (P->ProvidesList != 0)
+           {
+              pkgCache::PrvIterator Prv = P.ProvidesList();
+              for (; Prv.end() == false; ++Prv)
+              {
+                 pkgCache::VerIterator const C = PkgState[Prv.OwnerPkg()->ID].CandidateVerIter(*this);
+                 if (C.end() == true || C != Prv.OwnerVer() ||
+                     (VersionState(C.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) != DepCandMin)
+                    continue;
+                 break;
+              }
+              if (Prv.end() == true)
+                 continue;
+           }
+           // no providers, so check if we have an installable candidate version
+           else if (Cand.end() == true ||
+               (VersionState(Cand.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) != DepCandMin)
+              continue;
+           itsFine = true;
+           break;
+        }
+        if (Cand.end() == true)
+           continue;
+        // check if the current candidate is enough for the versioned dependency - and installable?
+        if (VS().CheckDep(P.CandVersion(), Start->CompareOp, Start.TargetVer()) == true &&
+            (VersionState(Cand.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) == DepCandMin)
+        {
+           itsFine = true;
+           break;
+        }
+      }
+
+      if (itsFine == true) {
+        // something in the or-group was fine, skip all other members
+        for (; (D->CompareOp & Dep::Or) == Dep::Or; ++D);
+        continue;
+      }
+
+      // walk again over the or-group and check each if a candidate switch would help
+      itsFine = false;
+      for (bool stillOr = true; stillOr == true; ++D)
+      {
+        stillOr = (D->CompareOp & Dep::Or) == Dep::Or;
+        // changing candidate will not help if the dependency is not versioned
+        if (D.TargetVer() == 0 || D.TargetVer()[0] == '\0')
+        {
+           if (stillOr == true)
+              continue;
+           break;
+        }
 
+        pkgCache::VerIterator V;
+        if (TargetRel == "newest")
+           V = D.TargetPkg().VersionList();
+        else
+           V = Match.Find(D.TargetPkg());
+
+        // check if the version from this release could satisfy the dependency
+        if (V.end() == true || VS().CheckDep(V.VerStr(), D->CompareOp, D.TargetVer()) == false)
+        {
+           if (stillOr == true)
+              continue;
+           break;
+        }
+
+        pkgCache::VerIterator oldCand = PkgState[D.TargetPkg()->ID].CandidateVerIter(*this);
+        if (V == oldCand)
+        {
+           // Do we already touched this Version? If so, their versioned dependencies are okay, no need to check again
+           for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = Changed.begin();
+                c != Changed.end(); ++c)
+           {
+              if (c->first->ParentPkg != V->ParentPkg)
+                 continue;
+              itsFine = true;
+              break;
+           }
+        }
+
+        if (itsFine == false)
+        {
+           // change the candidate
+           Changed.push_back(make_pair(oldCand, TargetVer));
+           if (SetCandidateRelease(V, TargetRel, Changed) == false)
+           {
+              if (stillOr == false)
+                 break;
+              // undo the candidate changing
+              SetCandidateVersion(oldCand);
+              Changed.pop_back();
+              continue;
+           }
+           itsFine = true;
+        }
+
+        // something in the or-group was fine, skip all other members
+        for (; (D->CompareOp & Dep::Or) == Dep::Or; ++D);
+        break;
+      }
+
+      if (itsFine == false && (D->Type == pkgCache::Dep::PreDepends || D->Type == pkgCache::Dep::Depends))
+      {
+        // undo all changes which aren't lead to a solution
+        for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = ++newChanged;
+             c != Changed.end(); ++c)
+           SetCandidateVersion(c->first);
+        Changed.erase(newChanged, Changed.end());
+        return false;
+      }
+   }
+   return true;
+}
+                                                                       /*}}}*/
+// DepCache::MarkAuto - set the Auto flag for a package                        /*{{{*/
+// ---------------------------------------------------------------------
+/* */
 void pkgDepCache::MarkAuto(const PkgIterator &Pkg, bool Auto)
 {
   StateCache &state = PkgState[Pkg->ID];
@@ -1603,7 +1796,8 @@ pkgCache::VerIterator pkgDepCache::Policy::GetCandidateVer(PkgIterator const &Pk
 
         /* Stash the highest version of a not-automatic source, we use it
            if there is nothing better */
-        if ((J.File()->Flags & Flag::NotAutomatic) != 0)
+        if ((J.File()->Flags & Flag::NotAutomatic) != 0 ||
+            (J.File()->Flags & Flag::ButAutomaticUpgrades) != 0)
         {
            if (Last.end() == true)
               Last = I;