* merged latest fixes from debian-sid

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

diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index f9901bc9af183c1e1c6e669730e22356f483307f..2c22fe0da902abd16dc704212bc36287de73b4b5 100644 (file)
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -16,7 +16,7 @@
    990         = Config file override package files
    989         = Start for preference auto-priorities
    500         = Default package files
    990         = Config file override package files
    989         = Start for preference auto-priorities
    500         = Default package files

-   100         = The status file
+   100         = The status file and ButAutomaticUpgrades sources

    0 -> 100    = NotAutomatic sources like experimental
    -inf -> 0   = Never selected   
    
    0 -> 100    = NotAutomatic sources like experimental
    -inf -> 0   = Never selected   
    


@@ -45,6 +45,8 @@ using namespace std;
    file matches the V0 policy engine. */
 pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
 {
    file matches the V0 policy engine. */
 pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
 {

+   if (Owner == 0 || &(Owner->Head()) == 0)
+      return;

    PFPriority = new signed short[Owner->Head().PackageFileCount];
    Pins = new Pin[Owner->Head().PackageCount];
 
    PFPriority = new signed short[Owner->Head().PackageFileCount];
    Pins = new Pin[Owner->Head().PackageCount];
 


@@ -54,8 +56,22 @@ pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
    // The config file has a master override.
    string DefRel = _config->Find("APT::Default-Release");
    if (DefRel.empty() == false)
    // The config file has a master override.
    string DefRel = _config->Find("APT::Default-Release");
    if (DefRel.empty() == false)

-      CreatePin(pkgVersionMatch::Release,"",DefRel,990);
-      
+   {
+      bool found = false;
+      // FIXME: make ExpressionMatches static to use it here easily
+      pkgVersionMatch vm("", pkgVersionMatch::None);
+      for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); ++F)
+      {
+        if ((F->Archive != 0 && vm.ExpressionMatches(DefRel, F.Archive()) == true) ||
+            (F->Codename != 0 && vm.ExpressionMatches(DefRel, F.Codename()) == true) ||
+            (F->Version != 0 && vm.ExpressionMatches(DefRel, F.Version()) == true))
+           found = true;
+      }
+      if (found == false)
+        _error->Error(_("The value '%s' is invalid for APT::Default-Release as such a release is not available in the sources"), DefRel.c_str());
+      else
+        CreatePin(pkgVersionMatch::Release,"",DefRel,990);
+   }

    InitDefaults();
 }
                                                                        /*}}}*/
    InitDefaults();
 }
                                                                        /*}}}*/


@@ -70,9 +86,10 @@ bool pkgPolicy::InitDefaults()
       PFPriority[I->ID] = 500;
       if ((I->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
         PFPriority[I->ID] = 100;
       PFPriority[I->ID] = 500;
       if ((I->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
         PFPriority[I->ID] = 100;

-      else
-        if ((I->Flags & pkgCache::Flag::NotAutomatic) == pkgCache::Flag::NotAutomatic)
-           PFPriority[I->ID] = 1;
+      else if ((I->Flags & pkgCache::Flag::ButAutomaticUpgrades) == pkgCache::Flag::ButAutomaticUpgrades)
+        PFPriority[I->ID] = 100;
+      else if ((I->Flags & pkgCache::Flag::NotAutomatic) == pkgCache::Flag::NotAutomatic)
+        PFPriority[I->ID] = 1;

    }
 
    // Apply the defaults..
    }
 
    // Apply the defaults..


@@ -106,7 +123,7 @@ bool pkgPolicy::InitDefaults()
 
    if (_config->FindB("Debug::pkgPolicy",false) == true)
       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)
 
    if (_config->FindB("Debug::pkgPolicy",false) == true)
       for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)

-        cout << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << endl; 
+        std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl; 

    
    return true;   
 }
    
    return true;   
 }


@@ -115,12 +132,16 @@ bool pkgPolicy::InitDefaults()
 // ---------------------------------------------------------------------
 /* Evaluate the package pins and the default list to deteremine what the
    best package is. */
 // ---------------------------------------------------------------------
 /* Evaluate the package pins and the default list to deteremine what the
    best package is. */

-pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
+pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const &Pkg)

 {
    // Look for a package pin and evaluate it.
    signed Max = GetPriority(Pkg);
    pkgCache::VerIterator Pref = GetMatch(Pkg);
 
 {
    // Look for a package pin and evaluate it.
    signed Max = GetPriority(Pkg);
    pkgCache::VerIterator Pref = GetMatch(Pkg);
 

+   // Alternatives in case we can not find our package pin (Bug#512318).
+   signed MaxAlt = 0;
+   pkgCache::VerIterator PrefAlt;
+

    // no package = no candidate version
    if (Pkg.end() == true)
       return Pref;
    // no package = no candidate version
    if (Pkg.end() == true)
       return Pref;


@@ -143,6 +164,9 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
     */
    for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
    {
     */
    for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
    {

+      /* Lets see if this version is the installed version */
+      bool instVer = (Pkg.CurrentVer() == Ver);
+

       for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
       {
         /* If this is the status file, and the current version is not the
       for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++)
       {
         /* If this is the status file, and the current version is not the


@@ -151,18 +175,23 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
            out bogus entries that may be due to config-file states, or
            other. */
         if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource &&
            out bogus entries that may be due to config-file states, or
            other. */
         if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource &&

-            Pkg.CurrentVer() != Ver)
+            instVer == false)

            continue;
            continue;

-                        
+

         signed Prio = PFPriority[VF.File()->ID];
         if (Prio > Max)
         {
            Pref = Ver;
            Max = Prio;
         signed Prio = PFPriority[VF.File()->ID];
         if (Prio > Max)
         {
            Pref = Ver;
            Max = Prio;

+        }
+        if (Prio > MaxAlt)
+        {
+           PrefAlt = Ver;
+           MaxAlt = Prio;

         }       
       }      
       
         }       
       }      
       

-      if (Pkg.CurrentVer() == Ver && Max < 1000)
+      if (instVer == true && Max < 1000)

       {
         /* Elevate our current selection (or the status file itself)
            to the Pseudo-status priority. */
       {
         /* Elevate our current selection (or the status file itself)
            to the Pseudo-status priority. */


@@ -175,6 +204,12 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
            break;
       }            
    }
            break;
       }            
    }

+   // If we do not find our candidate, use the one with the highest pin.
+   // This means that if there is a version available with pin > 0; there
+   // will always be a candidate (Closes: #512318)
+   if (!Pref.IsGood() && MaxAlt > 0)
+       Pref = PrefAlt;
+

    return Pref;
 }
                                                                        /*}}}*/
    return Pref;
 }
                                                                        /*}}}*/


@@ -187,49 +222,87 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg)
 void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
                          string Data,signed short Priority)
 {
 void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name,
                          string Data,signed short Priority)
 {

-   Pin *P = 0;
-   

    if (Name.empty() == true)
    if (Name.empty() == true)

-      P = &*Defaults.insert(Defaults.end(),PkgPin());
-   else

    {
    {

-      // Get a spot to put the pin
-      pkgCache::PkgIterator Pkg = Cache->FindPkg(Name);
-      if (Pkg.end() == true)
-      {
-        // Check the unmatched table
-        for (vector<PkgPin>::iterator I = Unmatched.begin(); 
-             I != Unmatched.end() && P == 0; I++)
-           if (I->Pkg == Name)
-              P = &*I;
-        
-        if (P == 0)
-           P = &*Unmatched.insert(Unmatched.end(),PkgPin());      
-      }
-      else
-      {
-        P = Pins + Pkg->ID;
-      }      
+      Pin *P = &*Defaults.insert(Defaults.end(),Pin());
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;
+      return;
+   }
+
+   size_t found = Name.rfind(':');
+   string Arch;
+   if (found != string::npos) {
+      Arch = Name.substr(found+1);
+      Name.erase(found);
+   }
+
+   // Allow pinning by wildcards
+   // TODO: Maybe we should always prefer specific pins over non-
+   // specific ones.
+   if (Name[0] == '/' || Name.find_first_of("*[?") != string::npos)
+   {
+      pkgVersionMatch match(Data, Type);
+      for (pkgCache::GrpIterator G = Cache->GrpBegin(); G.end() != true; ++G)
+        if (match.ExpressionMatches(Name, G.Name()))
+        {
+           if (Arch.empty() == false)
+              CreatePin(Type, string(G.Name()).append(":").append(Arch), Data, Priority);
+           else
+              CreatePin(Type, G.Name(), Data, Priority);
+        }
+      return;
+   }
+
+   // find the package (group) this pin applies to
+   pkgCache::GrpIterator Grp;
+   pkgCache::PkgIterator Pkg;
+   if (Arch.empty() == false)
+      Pkg = Cache->FindPkg(Name, Arch);
+   else {
+      Grp = Cache->FindGrp(Name);
+      if (Grp.end() == false)
+        Pkg = Grp.PackageList();
+   }
+
+   if (Pkg.end() == true)
+   {
+      PkgPin *P = &*Unmatched.insert(Unmatched.end(),PkgPin(Name));
+      if (Arch.empty() == false)
+        P->Pkg.append(":").append(Arch);
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;
+      return;
+   }
+
+   for (; Pkg.end() != true; Pkg = Grp.NextPkg(Pkg))
+   {
+      Pin *P = Pins + Pkg->ID;
+      // the first specific stanza for a package is the ruler,
+      // all others need to be ignored
+      if (P->Type != pkgVersionMatch::None)
+        P = &*Unmatched.insert(Unmatched.end(),PkgPin(Pkg.FullName()));
+      P->Type = Type;
+      P->Priority = Priority;
+      P->Data = Data;
+      if (Grp.end() == true)
+        break;

    }
    }

-   
-   // Set..
-   P->Type = Type;
-   P->Priority = Priority;
-   P->Data = Data;

 }
                                                                        /*}}}*/
 // Policy::GetMatch - Get the matching version for a package pin       /*{{{*/
 // ---------------------------------------------------------------------
 /* */
 }
                                                                        /*}}}*/
 // Policy::GetMatch - Get the matching version for a package pin       /*{{{*/
 // ---------------------------------------------------------------------
 /* */

-pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator Pkg)
+pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator const &Pkg)

 {
    const Pin &PPkg = Pins[Pkg->ID];
 {
    const Pin &PPkg = Pins[Pkg->ID];

-   if (PPkg.Type != pkgVersionMatch::None)
-   {
-      pkgVersionMatch Match(PPkg.Data,PPkg.Type);
-      return Match.Find(Pkg);
-   }
-   return pkgCache::VerIterator(*Pkg.Cache());
+   if (PPkg.Type == pkgVersionMatch::None)
+      return pkgCache::VerIterator(*Pkg.Cache());
+
+   pkgVersionMatch Match(PPkg.Data,PPkg.Type);
+   return Match.Find(Pkg);

 }
                                                                        /*}}}*/
 // Policy::GetPriority - Get the priority of the package pin           /*{{{*/
 }
                                                                        /*}}}*/
 // Policy::GetPriority - Get the priority of the package pin           /*{{{*/


@@ -246,6 +319,10 @@ signed short pkgPolicy::GetPriority(pkgCache::PkgIterator const &Pkg)
    }
    
    return 0;
    }
    
    return 0;

+}
+signed short pkgPolicy::GetPriority(pkgCache::PkgFileIterator const &File)
+{
+   return PFPriority[File->ID];

 }
                                                                        /*}}}*/
 // PreferenceSection class - Overriding the default TrimRecord method  /*{{{*/
 }
                                                                        /*}}}*/
 // PreferenceSection class - Overriding the default TrimRecord method  /*{{{*/


@@ -274,9 +351,9 @@ bool ReadPinDir(pkgPolicy &Plcy,string Dir)
    if (Dir.empty() == true)
       Dir = _config->FindDir("Dir::Etc::PreferencesParts");
 
    if (Dir.empty() == true)
       Dir = _config->FindDir("Dir::Etc::PreferencesParts");
 

-   if (FileExists(Dir) == false)
+   if (DirectoryExists(Dir) == false)

    {
    {

-      _error->WarningE("FileExists",_("Unable to read %s"),Dir.c_str());
+      _error->WarningE("DirectoryExists",_("Unable to read %s"),Dir.c_str());

       return true;
    }
 
       return true;
    }
 


@@ -300,7 +377,7 @@ bool ReadPinFile(pkgPolicy &Plcy,string File)
    if (File.empty() == true)
       File = _config->FindFile("Dir::Etc::Preferences");
 
    if (File.empty() == true)
       File = _config->FindFile("Dir::Etc::Preferences");
 

-   if (FileExists(File) == false)
+   if (RealFileExists(File) == false)

       return true;
    
    FileFd Fd(File,FileFd::ReadOnly);
       return true;
    
    FileFd Fd(File,FileFd::ReadOnly);