]> git.saurik.com Git - apt.git/blobdiff - apt-pkg/pkgcachegen.cc
Ensure that for each all package at least one pseudopackage is installed
[apt.git] / apt-pkg / pkgcachegen.cc
index 037c0cb63849b51708aca353068c227ef4e8e6bb..3d1a654d1af65ca3071919bcead5ad1517588a42 100644 (file)
@@ -22,6 +22,7 @@
 #include <apt-pkg/strutl.h>
 #include <apt-pkg/sptr.h>
 #include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/macros.h>
 
 #include <apt-pkg/tagfile.h>
 
@@ -33,7 +34,6 @@
 #include <unistd.h>
 #include <errno.h>
 #include <stdio.h>
-#include <system.h>
                                                                        /*}}}*/
 typedef vector<pkgIndexFile *>::iterator FileIterator;
 
@@ -115,9 +115,11 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
       /* As we handle Arch all packages as architecture bounded
          we add all information to every (simulated) arch package */
       std::vector<string> genArch;
-      if (List.ArchitectureAll() == true)
+      if (List.ArchitectureAll() == true) {
         genArch = APT::Configuration::getArchitectures();
-      else
+        if (genArch.size() != 1)
+           genArch.push_back("all");
+      } else
         genArch.push_back(List.Architecture());
 
       for (std::vector<string>::const_iterator arch = genArch.begin();
@@ -531,8 +533,11 @@ bool pkgCacheGenerator::FinishCache(OpProgress &Progress) {
                for (pkgCache::GrpIterator G = GetCache().GrpBegin(); G.end() != true; G++) {
                        string const PkgName = G.Name();
                        for (pkgCache::PkgIterator P = G.PackageList(); P.end() != true; P = G.NextPkg(P)) {
+                               if (strcmp(P.Arch(),"all") == 0)
+                                       continue;
+                               pkgCache::PkgIterator allPkg;
                                for (pkgCache::VerIterator V = P.VersionList(); V.end() != true; V++) {
-                                       string const Arch = V.Arch();
+                                       string const Arch = V.Arch(true);
                                        map_ptrloc *OldDepLast = NULL;
                                        /* MultiArch handling introduces a lot of implicit Dependencies:
                                           - MultiArch: same → Co-Installable if they have the same version
@@ -540,6 +545,8 @@ bool pkgCacheGenerator::FinishCache(OpProgress &Progress) {
                                           - All others conflict with all other group members */
                                        bool const coInstall = (V->MultiArch == pkgCache::Version::All ||
                                                                V->MultiArch == pkgCache::Version::Same);
+                                       if (V->MultiArch == pkgCache::Version::All && allPkg.end() == true)
+                                               allPkg = G.FindPkg("all");
                                        for (vector<string>::const_iterator A = archs.begin(); A != archs.end(); ++A) {
                                                if (*A == Arch)
                                                        continue;
@@ -561,6 +568,12 @@ bool pkgCacheGenerator::FinishCache(OpProgress &Progress) {
                                                        NewDepends(D, V, V.VerStr(),
                                                                   pkgCache::Dep::Greater, pkgCache::Dep::DpkgBreaks,
                                                                   OldDepLast);
+                                                       if (V->MultiArch == pkgCache::Version::All) {
+                                                               // Depend on ${self}:all which does depend on nothing
+                                                               NewDepends(allPkg, V, V.VerStr(),
+                                                                          pkgCache::Dep::Equals, pkgCache::Dep::Depends,
+                                                                          OldDepLast);
+                                                       }
                                                } else {
                                                        // Conflicts: ${self}:other
                                                        NewDepends(D, V, "",
@@ -668,13 +681,14 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver,
 // ---------------------------------------------------------------------
 /* */
 bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver,
-                                               const string &PackageName,
+                                               const string &PkgName,
+                                               const string &PkgArch,
                                                const string &Version)
 {
    pkgCache &Cache = Owner->Cache;
 
    // We do not add self referencing provides
-   if (unlikely(Ver.ParentPkg().Name() == PackageName))
+   if (Ver.ParentPkg().Name() == PkgName && PkgArch == Ver.Arch(true))
       return true;
    
    // Get a structure
@@ -693,7 +707,7 @@ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver,
    
    // Locate the target package
    pkgCache::PkgIterator Pkg;
-   if (unlikely(Owner->NewPackage(Pkg,PackageName,string(Ver.Arch())) == false))
+   if (unlikely(Owner->NewPackage(Pkg,PkgName, PkgArch) == false))
       return false;
    
    // Link it to the package
@@ -794,16 +808,23 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S,
 static bool CheckValidity(const string &CacheFile, FileIterator Start, 
                           FileIterator End,MMap **OutMap = 0)
 {
+   bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
    // No file, certainly invalid
    if (CacheFile.empty() == true || FileExists(CacheFile) == false)
+   {
+      if (Debug == true)
+        std::clog << "CacheFile doesn't exist" << std::endl;
       return false;
-   
+   }
+
    // Map it
    FileFd CacheF(CacheFile,FileFd::ReadOnly);
    SPtr<MMap> Map = new MMap(CacheF,0);
    pkgCache Cache(Map);
    if (_error->PendingError() == true || Map->Size() == 0)
    {
+      if (Debug == true)
+        std::clog << "Errors are pending or Map is empty()" << std::endl;
       _error->Discard();
       return false;
    }
@@ -813,9 +834,15 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start,
    SPtrArray<bool> Visited = new bool[Cache.HeaderP->PackageFileCount];
    memset(Visited,0,sizeof(*Visited)*Cache.HeaderP->PackageFileCount);
    for (; Start != End; Start++)
-   {      
+   {
+      if (Debug == true)
+        std::clog << "Checking PkgFile " << (*Start)->Describe() << ": ";
       if ((*Start)->HasPackages() == false)
+      {
+         if (Debug == true)
+           std::clog << "Has NO packages" << std::endl;
         continue;
+      }
     
       if ((*Start)->Exists() == false)
       {
@@ -823,23 +850,40 @@ static bool CheckValidity(const string &CacheFile, FileIterator Start,
         _error->WarningE("stat",_("Couldn't stat source package list %s"),
                          (*Start)->Describe().c_str());
 #endif
+         if (Debug == true)
+           std::clog << "file doesn't exist" << std::endl;
         continue;
       }
 
       // FindInCache is also expected to do an IMS check.
       pkgCache::PkgFileIterator File = (*Start)->FindInCache(Cache);
       if (File.end() == true)
+      {
+        if (Debug == true)
+           std::clog << "FindInCache returned end-Pointer" << std::endl;
         return false;
+      }
 
       Visited[File->ID] = true;
+      if (Debug == true)
+        std::clog << "with ID " << File->ID << " is valid" << std::endl;
    }
    
    for (unsigned I = 0; I != Cache.HeaderP->PackageFileCount; I++)
       if (Visited[I] == false)
+      {
+        if (Debug == true)
+           std::clog << "File with ID" << I << " wasn't visited" << std::endl;
         return false;
+      }
    
    if (_error->PendingError() == true)
    {
+      if (Debug == true)
+      {
+        std::clog << "Validity failed because of pending errors:" << std::endl;
+        _error->DumpErrors();
+      }
       _error->Discard();
       return false;
    }
@@ -926,7 +970,8 @@ static bool BuildCache(pkgCacheGenerator &Gen,
 bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
                        MMap **OutMap,bool AllowMem)
 {
-   unsigned long MapSize = _config->FindI("APT::Cache-Limit",24*1024*1024);
+   bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
+   unsigned long const MapSize = _config->FindI("APT::Cache-Limit",24*1024*1024);
    
    vector<pkgIndexFile *> Files;
    for (vector<metaIndex *>::const_iterator i = List.begin();
@@ -940,13 +985,13 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
          Files.push_back (*j);
    }
    
-   unsigned long EndOfSource = Files.size();
+   unsigned long const EndOfSource = Files.size();
    if (_system->AddStatusFiles(Files) == false)
       return false;
 
    // Decide if we can write to the files..
-   string CacheFile = _config->FindFile("Dir::Cache::pkgcache");
-   string SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
+   string const CacheFile = _config->FindFile("Dir::Cache::pkgcache");
+   string const SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
    
    // Decide if we can write to the cache
    bool Writeable = false;
@@ -955,7 +1000,9 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    else
       if (SrcCacheFile.empty() == false)
         Writeable = access(flNotFile(SrcCacheFile).c_str(),W_OK) == 0;
-   
+   if (Debug == true)
+      std::clog << "Do we have write-access to the cache files? " << (Writeable ? "YES" : "NO") << std::endl;
+
    if (Writeable == false && AllowMem == false && CacheFile.empty() == false)
       return _error->Error(_("Unable to write to %s"),flNotFile(CacheFile).c_str());
    
@@ -965,8 +1012,12 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    if (CheckValidity(CacheFile,Files.begin(),Files.end(),OutMap) == true)
    {
       Progress.OverallProgress(1,1,1,_("Reading package lists"));
+      if (Debug == true)
+        std::clog << "pkgcache.bin is valid - no need to build anything" << std::endl;
       return true;
    }
+   else if (Debug == true)
+        std::clog << "pkgcache.bin is NOT valid" << std::endl;
    
    /* At this point we know we need to reconstruct the package cache,
       begin. */
@@ -980,11 +1031,15 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       Map = new DynamicMMap(*CacheF,MMap::Public,MapSize);
       if (_error->PendingError() == true)
         return false;
+      if (Debug == true)
+        std::clog << "Open filebased MMap" << std::endl;
    }
    else
    {
       // Just build it in memory..
       Map = new DynamicMMap(0,MapSize);
+      if (Debug == true)
+        std::clog << "Open memory Map (not filebased)" << std::endl;
    }
    
    // Lets try the source cache.
@@ -993,16 +1048,18 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    if (CheckValidity(SrcCacheFile,Files.begin(),
                     Files.begin()+EndOfSource) == true)
    {
+      if (Debug == true)
+        std::clog << "srcpkgcache.bin is valid - populate MMap with it." << std::endl;
       // Preload the map with the source cache
       FileFd SCacheF(SrcCacheFile,FileFd::ReadOnly);
-      unsigned long alloc = Map->RawAllocate(SCacheF.Size());
+      unsigned long const alloc = Map->RawAllocate(SCacheF.Size());
       if ((alloc == 0 && _error->PendingError())
                || SCacheF.Read((unsigned char *)Map->Data() + alloc,
                                SCacheF.Size()) == false)
         return false;
 
       TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
-      
+
       // Build the status cache
       pkgCacheGenerator Gen(Map.Get(),&Progress);
       if (_error->PendingError() == true)
@@ -1016,6 +1073,8 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
    }
    else
    {
+      if (Debug == true)
+        std::clog << "srcpkgcache.bin is NOT valid - rebuild" << std::endl;
       TotalSize = ComputeSize(Files.begin(),Files.end());
       
       // Build the source cache
@@ -1057,6 +1116,8 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
       // FIXME: move me to a better place
       Gen.FinishCache(Progress);
    }
+   if (Debug == true)
+      std::clog << "Caches are ready for shipping" << std::endl;
 
    if (_error->PendingError() == true)
       return false;