// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: pkgcachegen.cc,v 1.53.2.1 2003/12/24 23:09:17 mdz Exp $ /* ###################################################################### Package Cache Generator - Generator for the cache structure. This builds the cache structure from the abstract package list parser. ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /*}}}*/ typedef std::vector::iterator FileIterator; template std::vector pkgCacheGenerator::Dynamic::toReMap; static bool IsDuplicateDescription(pkgCache::DescIterator Desc, MD5SumValue const &CurMd5, std::string const &CurLang); using std::string; // CacheGenerator::pkgCacheGenerator - Constructor /*{{{*/ // --------------------------------------------------------------------- /* We set the dirty flag and make sure that is written to the disk */ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) : Map(*pMap), Cache(pMap,false), Progress(Prog), FoundFileDeps(0) { CurrentFile = 0; memset(UniqHash,0,sizeof(UniqHash)); if (_error->PendingError() == true) return; if (Map.Size() == 0) { // Setup the map interface.. Cache.HeaderP = (pkgCache::Header *)Map.Data(); if (Map.RawAllocate(sizeof(pkgCache::Header)) == 0 && _error->PendingError() == true) return; Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0])); // Starting header *Cache.HeaderP = pkgCache::Header(); // make room for the hashtables for packages and groups if (Map.RawAllocate(2 * (Cache.HeaderP->HashTableSize * sizeof(map_pointer_t))) == 0) return; map_stringitem_t const idxVerSysName = WriteStringInMap(_system->VS->Label); if (unlikely(idxVerSysName == 0)) return; Cache.HeaderP->VerSysName = idxVerSysName; // this pointer is set in ReMap, but we need it now for WriteUniqString Cache.StringItemP = (pkgCache::StringItem *)Map.Data(); map_stringitem_t const idxArchitecture = WriteUniqString(_config->Find("APT::Architecture")); if (unlikely(idxArchitecture == 0)) return; Cache.HeaderP->Architecture = idxArchitecture; std::vector archs = APT::Configuration::getArchitectures(); if (archs.size() > 1) { std::vector::const_iterator a = archs.begin(); std::string list = *a; for (++a; a != archs.end(); ++a) list.append(",").append(*a); map_stringitem_t const idxArchitectures = WriteStringInMap(list); if (unlikely(idxArchitectures == 0)) return; Cache.HeaderP->Architectures = idxArchitectures; } else Cache.HeaderP->Architectures = idxArchitecture; Cache.ReMap(); } else { // Map directly from the existing file Cache.ReMap(); Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0])); if (Cache.VS != _system->VS) { _error->Error(_("Cache has an incompatible versioning system")); return; } } Cache.HeaderP->Dirty = true; Map.Sync(0,sizeof(pkgCache::Header)); } /*}}}*/ // CacheGenerator::~pkgCacheGenerator - Destructor /*{{{*/ // --------------------------------------------------------------------- /* We sync the data then unset the dirty flag in two steps so as to advoid a problem during a crash */ pkgCacheGenerator::~pkgCacheGenerator() { if (_error->PendingError() == true) return; if (Map.Sync() == false) return; Cache.HeaderP->Dirty = false; Cache.HeaderP->CacheFileSize = Map.Size(); Map.Sync(0,sizeof(pkgCache::Header)); } /*}}}*/ void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newMap) {/*{{{*/ if (oldMap == newMap) return; if (_config->FindB("Debug::pkgCacheGen", false)) std::clog << "Remaping from " << oldMap << " to " << newMap << std::endl; Cache.ReMap(false); CurrentFile += (pkgCache::PackageFile const * const) newMap - (pkgCache::PackageFile const * const) oldMap; for (size_t i = 0; i < _count(UniqHash); ++i) if (UniqHash[i] != 0) UniqHash[i] += (pkgCache::StringItem const * const) newMap - (pkgCache::StringItem const * const) oldMap; for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) (*i)->ReMap(oldMap, newMap); } /*}}}*/ // CacheGenerator::WriteStringInMap /*{{{*/ map_stringitem_t pkgCacheGenerator::WriteStringInMap(const char *String, const unsigned long &Len) { void const * const oldMap = Map.Data(); map_stringitem_t const index = Map.WriteString(String, Len); if (index != 0) ReMap(oldMap, Map.Data()); return index; } /*}}}*/ // CacheGenerator::WriteStringInMap /*{{{*/ map_stringitem_t pkgCacheGenerator::WriteStringInMap(const char *String) { void const * const oldMap = Map.Data(); map_stringitem_t const index = Map.WriteString(String); if (index != 0) ReMap(oldMap, Map.Data()); return index; } /*}}}*/ map_pointer_t pkgCacheGenerator::AllocateInMap(const unsigned long &size) {/*{{{*/ void const * const oldMap = Map.Data(); map_pointer_t const index = Map.Allocate(size); if (index != 0) ReMap(oldMap, Map.Data()); return index; } /*}}}*/ // CacheGenerator::MergeList - Merge the package list /*{{{*/ // --------------------------------------------------------------------- /* This provides the generation of the entries in the cache. Each loop goes through a single package record from the underlying parse engine. */ bool pkgCacheGenerator::MergeList(ListParser &List, pkgCache::VerIterator *OutVer) { List.Owner = this; unsigned int Counter = 0; while (List.Step() == true) { string const PackageName = List.Package(); if (PackageName.empty() == true) return false; Counter++; if (Counter % 100 == 0 && Progress != 0) Progress->Progress(List.Offset()); string Arch = List.Architecture(); string const Version = List.Version(); if (Version.empty() == true && Arch.empty() == true) { // package descriptions if (MergeListGroup(List, PackageName) == false) return false; continue; } if (Arch.empty() == true) { // use the pseudo arch 'none' for arch-less packages Arch = "none"; /* We might built a SingleArchCache here, which we don't want to blow up just for these :none packages to a proper MultiArchCache, so just ensure that we have always a native package structure first for SingleArch */ pkgCache::PkgIterator NP; Dynamic DynPkg(NP); if (NewPackage(NP, PackageName, _config->Find("APT::Architecture")) == false) // TRANSLATOR: The first placeholder is a package name, // the other two should be copied verbatim as they include debug info return _error->Error(_("Error occurred while processing %s (%s%d)"), PackageName.c_str(), "NewPackage", 0); } // Get a pointer to the package structure pkgCache::PkgIterator Pkg; Dynamic DynPkg(Pkg); if (NewPackage(Pkg, PackageName, Arch) == false) // TRANSLATOR: The first placeholder is a package name, // the other two should be copied verbatim as they include debug info return _error->Error(_("Error occurred while processing %s (%s%d)"), PackageName.c_str(), "NewPackage", 1); if (Version.empty() == true) { if (MergeListPackage(List, Pkg) == false) return false; } else { if (MergeListVersion(List, Pkg, Version, OutVer) == false) return false; } if (OutVer != 0) { FoundFileDeps |= List.HasFileDeps(); return true; } } if (Cache.HeaderP->PackageCount >= std::numeric_limits::max()) return _error->Error(_("Wow, you exceeded the number of package " "names this APT is capable of.")); if (Cache.HeaderP->VersionCount >= std::numeric_limits::max()) return _error->Error(_("Wow, you exceeded the number of versions " "this APT is capable of.")); if (Cache.HeaderP->DescriptionCount >= std::numeric_limits::max()) return _error->Error(_("Wow, you exceeded the number of descriptions " "this APT is capable of.")); if (Cache.HeaderP->DependsCount >= std::numeric_limits::max()) return _error->Error(_("Wow, you exceeded the number of dependencies " "this APT is capable of.")); FoundFileDeps |= List.HasFileDeps(); return true; } // CacheGenerator::MergeListGroup /*{{{*/ bool pkgCacheGenerator::MergeListGroup(ListParser &List, std::string const &GrpName) { pkgCache::GrpIterator Grp = Cache.FindGrp(GrpName); // a group has no data on it's own, only packages have it but these // stanzas like this come from Translation- files to add descriptions, // but without a version we don't need a description for it… if (Grp.end() == true) return true; Dynamic DynGrp(Grp); pkgCache::PkgIterator Pkg; Dynamic DynPkg(Pkg); for (Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) if (MergeListPackage(List, Pkg) == false) return false; return true; } /*}}}*/ // CacheGenerator::MergeListPackage /*{{{*/ bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator &Pkg) { // we first process the package, then the descriptions // (for deb this package processing is in fact a no-op) pkgCache::VerIterator Ver(Cache); Dynamic DynVer(Ver); if (List.UsePackage(Pkg, Ver) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "UsePackage", 1); // Find the right version to write the description MD5SumValue CurMd5 = List.Description_md5(); if (CurMd5.Value().empty() == true && List.Description("").empty() == true) return true; std::vector availDesc = List.AvailableDescriptionLanguages(); for (Ver = Pkg.VersionList(); Ver.end() == false; ++Ver) { pkgCache::DescIterator VerDesc = Ver.DescriptionList(); // a version can only have one md5 describing it if (VerDesc.end() == true || MD5SumValue(VerDesc.md5()) != CurMd5) continue; map_stringitem_t md5idx = VerDesc->md5sum; for (std::vector::const_iterator CurLang = availDesc.begin(); CurLang != availDesc.end(); ++CurLang) { // don't add a new description if we have one for the given // md5 && language if (IsDuplicateDescription(VerDesc, CurMd5, *CurLang) == true) continue; AddNewDescription(List, Ver, *CurLang, CurMd5, md5idx); } // we can stop here as all "same" versions will share the description break; } return true; } /*}}}*/ // CacheGenerator::MergeListVersion /*{{{*/ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator &Pkg, std::string const &Version, pkgCache::VerIterator* &OutVer) { pkgCache::VerIterator Ver = Pkg.VersionList(); Dynamic DynVer(Ver); map_pointer_t *LastVer = &Pkg->VersionList; void const * oldMap = Map.Data(); unsigned short const Hash = List.VersionHash(); if (Ver.end() == false) { /* We know the list is sorted so we use that fact in the search. Insertion of new versions is done with correct sorting */ int Res = 1; for (; Ver.end() == false; LastVer = &Ver->NextVer, Ver++) { Res = Cache.VS->CmpVersion(Version,Ver.VerStr()); // Version is higher as current version - insert here if (Res > 0) break; // Versionstrings are equal - is hash also equal? if (Res == 0 && List.SameVersion(Hash, Ver) == true) break; // proceed with the next till we have either the right // or we found another version (which will be lower) } /* We already have a version for this item, record that we saw it */ if (Res == 0 && Ver.end() == false && Ver->Hash == Hash) { if (List.UsePackage(Pkg,Ver) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "UsePackage", 2); if (NewFileVer(Ver,List) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewFileVer", 1); // Read only a single record and return if (OutVer != 0) { *OutVer = Ver; return true; } return true; } } // Add a new version map_pointer_t const verindex = NewVersion(Ver, Version, Pkg.Index(), Hash, *LastVer); if (verindex == 0 && _error->PendingError()) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewVersion", 1); if (oldMap != Map.Data()) LastVer += (map_pointer_t const * const) Map.Data() - (map_pointer_t const * const) oldMap; *LastVer = verindex; if (unlikely(List.NewVersion(Ver) == false)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewVersion", 2); if (unlikely(List.UsePackage(Pkg,Ver) == false)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "UsePackage", 3); if (unlikely(NewFileVer(Ver,List) == false)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewFileVer", 2); pkgCache::GrpIterator Grp = Pkg.Group(); Dynamic DynGrp(Grp); /* If it is the first version of this package we need to add implicit Multi-Arch dependencies to all other package versions in the group now - otherwise we just add them for this new version */ if (Pkg.VersionList()->NextVer == 0) { pkgCache::PkgIterator P = Grp.PackageList(); Dynamic DynP(P); for (; P.end() != true; P = Grp.NextPkg(P)) { if (P->ID == Pkg->ID) continue; pkgCache::VerIterator V = P.VersionList(); Dynamic DynV(V); for (; V.end() != true; ++V) if (unlikely(AddImplicitDepends(V, Pkg) == false)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "AddImplicitDepends", 1); } /* :none packages are packages without an architecture. They are forbidden by debian-policy, so usually they will only be in (old) dpkg status files - and dpkg will complain about them - and are pretty rare. We therefore do usually not create conflicts while the parent is created, but only if a :none package (= the target) appears. This creates incorrect dependencies on :none for architecture-specific dependencies on the package we copy from, but we will ignore this bug as architecture-specific dependencies are only allowed in jessie and until then the :none packages should be extinct (hopefully). In other words: This should work long enough to allow graceful removal of these packages, it is not supposed to allow users to keep using them … */ if (strcmp(Pkg.Arch(), "none") == 0) { pkgCache::PkgIterator M = Grp.FindPreferredPkg(); if (M.end() == false && Pkg != M) { pkgCache::DepIterator D = M.RevDependsList(); Dynamic DynD(D); for (; D.end() == false; ++D) { if ((D->Type != pkgCache::Dep::Conflicts && D->Type != pkgCache::Dep::DpkgBreaks && D->Type != pkgCache::Dep::Replaces) || D.ParentPkg().Group() == Grp) continue; map_pointer_t *OldDepLast = NULL; pkgCache::VerIterator ConVersion = D.ParentVer(); Dynamic DynV(ConVersion); // duplicate the Conflicts/Breaks/Replaces for :none arch NewDepends(Pkg, ConVersion, D->Version, D->CompareOp, D->Type, OldDepLast); } } } } if (unlikely(AddImplicitDepends(Grp, Pkg, Ver) == false)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "AddImplicitDepends", 2); // Read only a single record and return if (OutVer != 0) { *OutVer = Ver; return true; } /* Record the Description(s) based on their master md5sum */ MD5SumValue CurMd5 = List.Description_md5(); if (CurMd5.Value().empty() == true && List.Description("").empty() == true) return true; /* Before we add a new description we first search in the group for a version with a description of the same MD5 - if so we reuse this description group instead of creating our own for this version */ for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P)) { for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V) { if (V->DescriptionList == 0 || MD5SumValue(V.DescriptionList().md5()) != CurMd5) continue; Ver->DescriptionList = V->DescriptionList; } } // We haven't found reusable descriptions, so add the first description(s) map_stringitem_t md5idx = Ver->DescriptionList == 0 ? 0 : Ver.DescriptionList()->md5sum; std::vector availDesc = List.AvailableDescriptionLanguages(); for (std::vector::const_iterator CurLang = availDesc.begin(); CurLang != availDesc.end(); ++CurLang) if (AddNewDescription(List, Ver, *CurLang, CurMd5, md5idx) == false) return false; return true; } /*}}}*/ bool pkgCacheGenerator::AddNewDescription(ListParser &List, pkgCache::VerIterator &Ver, std::string const &lang, MD5SumValue const &CurMd5, map_stringitem_t &md5idx) /*{{{*/ { pkgCache::DescIterator Desc; Dynamic DynDesc(Desc); map_pointer_t const descindex = NewDescription(Desc, lang, CurMd5, md5idx); if (unlikely(descindex == 0 && _error->PendingError())) return _error->Error(_("Error occurred while processing %s (%s%d)"), Ver.ParentPkg().Name(), "NewDescription", 1); md5idx = Desc->md5sum; Desc->ParentPkg = Ver.ParentPkg().Index(); // we add at the end, so that the start is constant as we need // that to be able to efficiently share these lists pkgCache::DescIterator VerDesc = Ver.DescriptionList(); // old value might be invalid after ReMap for (;VerDesc.end() == false && VerDesc->NextDesc != 0; ++VerDesc); map_pointer_t * const LastNextDesc = (VerDesc.end() == true) ? &Ver->DescriptionList : &VerDesc->NextDesc; *LastNextDesc = descindex; if (NewFileDesc(Desc,List) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), Ver.ParentPkg().Name(), "NewFileDesc", 1); return true; } /*}}}*/ /*}}}*/ // CacheGenerator::MergeFileProvides - Merge file provides /*{{{*/ // --------------------------------------------------------------------- /* If we found any file depends while parsing the main list we need to resolve them. Since it is undesired to load the entire list of files into the cache as virtual packages we do a two stage effort. MergeList identifies the file depends and this creates Provdies for them by re-parsing all the indexs. */ bool pkgCacheGenerator::MergeFileProvides(ListParser &List) { List.Owner = this; unsigned int Counter = 0; while (List.Step() == true) { string PackageName = List.Package(); if (PackageName.empty() == true) return false; string Version = List.Version(); if (Version.empty() == true) continue; pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName); Dynamic DynPkg(Pkg); if (Pkg.end() == true) return _error->Error(_("Error occurred while processing %s (%s%d)"), PackageName.c_str(), "FindPkg", 1); Counter++; if (Counter % 100 == 0 && Progress != 0) Progress->Progress(List.Offset()); unsigned short Hash = List.VersionHash(); pkgCache::VerIterator Ver = Pkg.VersionList(); Dynamic DynVer(Ver); for (; Ver.end() == false; ++Ver) { if (List.SameVersion(Hash, Ver) == true && Version == Ver.VerStr()) { if (List.CollectFileProvides(Cache,Ver) == false) return _error->Error(_("Error occurred while processing %s (%s%d)"), PackageName.c_str(), "CollectFileProvides", 1); break; } } if (Ver.end() == true) _error->Warning(_("Package %s %s was not found while processing file dependencies"),PackageName.c_str(),Version.c_str()); } return true; } /*}}}*/ // CacheGenerator::NewGroup - Add a new group /*{{{*/ // --------------------------------------------------------------------- /* This creates a new group structure and adds it to the hash table */ bool pkgCacheGenerator::NewGroup(pkgCache::GrpIterator &Grp, const string &Name) { Grp = Cache.FindGrp(Name); if (Grp.end() == false) return true; // Get a structure map_pointer_t const Group = AllocateInMap(sizeof(pkgCache::Group)); if (unlikely(Group == 0)) return false; Grp = pkgCache::GrpIterator(Cache, Cache.GrpP + Group); map_pointer_t const idxName = WriteStringInMap(Name); if (unlikely(idxName == 0)) return false; Grp->Name = idxName; // Insert it into the hash table unsigned long const Hash = Cache.Hash(Name); map_pointer_t *insertAt = &Cache.HeaderP->GrpHashTable()[Hash]; while (*insertAt != 0 && strcasecmp(Name.c_str(), Cache.StrP + (Cache.GrpP + *insertAt)->Name) > 0) insertAt = &(Cache.GrpP + *insertAt)->Next; Grp->Next = *insertAt; *insertAt = Group; Grp->ID = Cache.HeaderP->GroupCount++; return true; } /*}}}*/ // CacheGenerator::NewPackage - Add a new package /*{{{*/ // --------------------------------------------------------------------- /* This creates a new package structure and adds it to the hash table */ bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name, const string &Arch) { pkgCache::GrpIterator Grp; Dynamic DynGrp(Grp); if (unlikely(NewGroup(Grp, Name) == false)) return false; Pkg = Grp.FindPkg(Arch); if (Pkg.end() == false) return true; // Get a structure map_pointer_t const Package = AllocateInMap(sizeof(pkgCache::Package)); if (unlikely(Package == 0)) return false; Pkg = pkgCache::PkgIterator(Cache,Cache.PkgP + Package); // Insert the package into our package list if (Grp->FirstPackage == 0) // the group is new { Grp->FirstPackage = Package; // Insert it into the hash table map_id_t const Hash = Cache.Hash(Name); map_pointer_t *insertAt = &Cache.HeaderP->PkgHashTable()[Hash]; while (*insertAt != 0 && strcasecmp(Name.c_str(), Cache.StrP + (Cache.GrpP + (Cache.PkgP + *insertAt)->Group)->Name) > 0) insertAt = &(Cache.PkgP + *insertAt)->Next; Pkg->Next = *insertAt; *insertAt = Package; } else // Group the Packages together { // this package is the new last package pkgCache::PkgIterator LastPkg(Cache, Cache.PkgP + Grp->LastPackage); Pkg->Next = LastPkg->Next; LastPkg->Next = Package; } Grp->LastPackage = Package; // Set the name, arch and the ID #if __GNUC__ >= 4 #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wdeprecated-declarations" #endif Pkg->Name = Grp->Name; #if __GNUC__ >= 4 #pragma GCC diagnostic pop #endif Pkg->Group = Grp.Index(); // all is mapped to the native architecture map_stringitem_t const idxArch = (Arch == "all") ? Cache.HeaderP->Architecture : WriteUniqString(Arch.c_str()); if (unlikely(idxArch == 0)) return false; Pkg->Arch = idxArch; Pkg->ID = Cache.HeaderP->PackageCount++; return true; } /*}}}*/ // CacheGenerator::AddImplicitDepends /*{{{*/ bool pkgCacheGenerator::AddImplicitDepends(pkgCache::GrpIterator &G, pkgCache::PkgIterator &P, pkgCache::VerIterator &V) { // copy P.Arch() into a string here as a cache remap // in NewDepends() later may alter the pointer location string Arch = P.Arch() == NULL ? "" : P.Arch(); map_pointer_t *OldDepLast = NULL; /* MultiArch handling introduces a lot of implicit Dependencies: - MultiArch: same → Co-Installable if they have the same version - All others conflict with all other group members */ bool const coInstall = ((V->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same); pkgCache::PkgIterator D = G.PackageList(); Dynamic DynD(D); map_stringitem_t const VerStrIdx = V->VerStr; for (; D.end() != true; D = G.NextPkg(D)) { if (Arch == D.Arch() || D->VersionList == 0) continue; /* We allow only one installed arch at the time per group, therefore each group member conflicts with all other group members */ if (coInstall == true) { // Replaces: ${self}:other ( << ${binary:Version}) NewDepends(D, V, VerStrIdx, pkgCache::Dep::Less, pkgCache::Dep::Replaces, OldDepLast); // Breaks: ${self}:other (!= ${binary:Version}) NewDepends(D, V, VerStrIdx, pkgCache::Dep::NotEquals, pkgCache::Dep::DpkgBreaks, OldDepLast); } else { // Conflicts: ${self}:other NewDepends(D, V, 0, pkgCache::Dep::NoOp, pkgCache::Dep::Conflicts, OldDepLast); } } return true; } bool pkgCacheGenerator::AddImplicitDepends(pkgCache::VerIterator &V, pkgCache::PkgIterator &D) { /* MultiArch handling introduces a lot of implicit Dependencies: - MultiArch: same → Co-Installable if they have the same version - All others conflict with all other group members */ map_pointer_t *OldDepLast = NULL; bool const coInstall = ((V->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same); if (coInstall == true) { map_stringitem_t const VerStrIdx = V->VerStr; // Replaces: ${self}:other ( << ${binary:Version}) NewDepends(D, V, VerStrIdx, pkgCache::Dep::Less, pkgCache::Dep::Replaces, OldDepLast); // Breaks: ${self}:other (!= ${binary:Version}) NewDepends(D, V, VerStrIdx, pkgCache::Dep::NotEquals, pkgCache::Dep::DpkgBreaks, OldDepLast); } else { // Conflicts: ${self}:other NewDepends(D, V, 0, pkgCache::Dep::NoOp, pkgCache::Dep::Conflicts, OldDepLast); } return true; } /*}}}*/ // CacheGenerator::NewFileVer - Create a new File<->Version association /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver, ListParser &List) { if (CurrentFile == 0) return true; // Get a structure map_pointer_t const VerFile = AllocateInMap(sizeof(pkgCache::VerFile)); if (VerFile == 0) return false; pkgCache::VerFileIterator VF(Cache,Cache.VerFileP + VerFile); VF->File = CurrentFile - Cache.PkgFileP; // Link it to the end of the list map_pointer_t *Last = &Ver->FileList; for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; ++V) Last = &V->NextFile; VF->NextFile = *Last; *Last = VF.Index(); VF->Offset = List.Offset(); VF->Size = List.Size(); if (Cache.HeaderP->MaxVerFileSize < VF->Size) Cache.HeaderP->MaxVerFileSize = VF->Size; Cache.HeaderP->VerFileCount++; return true; } /*}}}*/ // CacheGenerator::NewVersion - Create a new Version /*{{{*/ // --------------------------------------------------------------------- /* This puts a version structure in the linked list */ map_pointer_t pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver, const string &VerStr, map_pointer_t const ParentPkg, unsigned short const Hash, map_pointer_t const Next) { // Get a structure map_pointer_t const Version = AllocateInMap(sizeof(pkgCache::Version)); if (Version == 0) return 0; // Fill it in Ver = pkgCache::VerIterator(Cache,Cache.VerP + Version); //Dynamic DynV(Ver); // caller MergeListVersion already takes care of it Ver->NextVer = Next; Ver->ParentPkg = ParentPkg; Ver->Hash = Hash; Ver->ID = Cache.HeaderP->VersionCount++; // try to find the version string in the group for reuse pkgCache::PkgIterator Pkg = Ver.ParentPkg(); pkgCache::GrpIterator Grp = Pkg.Group(); if (Pkg.end() == false && Grp.end() == false) { for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P)) { if (Pkg == P) continue; for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V) { int const cmp = strcmp(V.VerStr(), VerStr.c_str()); if (cmp == 0) { Ver->VerStr = V->VerStr; return Version; } else if (cmp < 0) break; } } } // haven't found the version string, so create map_stringitem_t const idxVerStr = WriteStringInMap(VerStr); if (unlikely(idxVerStr == 0)) return 0; Ver->VerStr = idxVerStr; return Version; } /*}}}*/ // CacheGenerator::NewFileDesc - Create a new File<->Desc association /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgCacheGenerator::NewFileDesc(pkgCache::DescIterator &Desc, ListParser &List) { if (CurrentFile == 0) return true; // Get a structure map_pointer_t const DescFile = AllocateInMap(sizeof(pkgCache::DescFile)); if (DescFile == 0) return false; pkgCache::DescFileIterator DF(Cache,Cache.DescFileP + DescFile); DF->File = CurrentFile - Cache.PkgFileP; // Link it to the end of the list map_pointer_t *Last = &Desc->FileList; for (pkgCache::DescFileIterator D = Desc.FileList(); D.end() == false; ++D) Last = &D->NextFile; DF->NextFile = *Last; *Last = DF.Index(); DF->Offset = List.Offset(); DF->Size = List.Size(); if (Cache.HeaderP->MaxDescFileSize < DF->Size) Cache.HeaderP->MaxDescFileSize = DF->Size; Cache.HeaderP->DescFileCount++; return true; } /*}}}*/ // CacheGenerator::NewDescription - Create a new Description /*{{{*/ // --------------------------------------------------------------------- /* This puts a description structure in the linked list */ map_pointer_t pkgCacheGenerator::NewDescription(pkgCache::DescIterator &Desc, const string &Lang, const MD5SumValue &md5sum, map_stringitem_t const idxmd5str) { // Get a structure map_pointer_t const Description = AllocateInMap(sizeof(pkgCache::Description)); if (Description == 0) return 0; // Fill it in Desc = pkgCache::DescIterator(Cache,Cache.DescP + Description); Desc->ID = Cache.HeaderP->DescriptionCount++; map_stringitem_t const idxlanguage_code = WriteUniqString(Lang); if (unlikely(idxlanguage_code == 0)) return 0; Desc->language_code = idxlanguage_code; if (idxmd5str != 0) Desc->md5sum = idxmd5str; else { map_stringitem_t const idxmd5sum = WriteStringInMap(md5sum.Value()); if (unlikely(idxmd5sum == 0)) return 0; Desc->md5sum = idxmd5sum; } return Description; } /*}}}*/ // CacheGenerator::NewDepends - Create a dependency element /*{{{*/ // --------------------------------------------------------------------- /* This creates a dependency element in the tree. It is linked to the version and to the package that it is pointing to. */ bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver, string const &Version, unsigned int const &Op, unsigned int const &Type, map_stringitem_t* &OldDepLast) { map_stringitem_t index = 0; if (Version.empty() == false) { int const CmpOp = Op & 0x0F; // =-deps are used (79:1) for lockstep on same-source packages (e.g. data-packages) if (CmpOp == pkgCache::Dep::Equals && strcmp(Version.c_str(), Ver.VerStr()) == 0) index = Ver->VerStr; if (index == 0) { void const * const oldMap = Map.Data(); index = WriteStringInMap(Version); if (unlikely(index == 0)) return false; if (OldDepLast != 0 && oldMap != Map.Data()) OldDepLast += (map_pointer_t const * const) Map.Data() - (map_pointer_t const * const) oldMap; } } return NewDepends(Pkg, Ver, index, Op, Type, OldDepLast); } bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg, pkgCache::VerIterator &Ver, map_pointer_t const Version, unsigned int const &Op, unsigned int const &Type, map_pointer_t* &OldDepLast) { void const * const oldMap = Map.Data(); // Get a structure map_pointer_t const Dependency = AllocateInMap(sizeof(pkgCache::Dependency)); if (unlikely(Dependency == 0)) return false; // Fill it in pkgCache::DepIterator Dep(Cache,Cache.DepP + Dependency); Dynamic DynDep(Dep); Dep->ParentVer = Ver.Index(); Dep->Type = Type; Dep->CompareOp = Op; Dep->Version = Version; Dep->ID = Cache.HeaderP->DependsCount++; // Link it to the package Dep->Package = Pkg.Index(); Dep->NextRevDepends = Pkg->RevDepends; Pkg->RevDepends = Dep.Index(); // Do we know where to link the Dependency to? if (OldDepLast == NULL) { OldDepLast = &Ver->DependsList; for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; ++D) OldDepLast = &D->NextDepends; } else if (oldMap != Map.Data()) OldDepLast += (map_pointer_t const * const) Map.Data() - (map_pointer_t const * const) oldMap; Dep->NextDepends = *OldDepLast; *OldDepLast = Dep.Index(); OldDepLast = &Dep->NextDepends; return true; } /*}}}*/ // ListParser::NewDepends - Create the environment for a new dependency /*{{{*/ // --------------------------------------------------------------------- /* This creates a Group and the Package to link this dependency to if needed and handles also the caching of the old endpoint */ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator &Ver, const string &PackageName, const string &Arch, const string &Version, unsigned int Op, unsigned int Type) { pkgCache::GrpIterator Grp; Dynamic DynGrp(Grp); if (unlikely(Owner->NewGroup(Grp, PackageName) == false)) return false; // Locate the target package pkgCache::PkgIterator Pkg = Grp.FindPkg(Arch); // we don't create 'none' packages and their dependencies if we can avoid it … if (Pkg.end() == true && Arch == "none" && strcmp(Ver.ParentPkg().Arch(), "none") != 0) return true; Dynamic DynPkg(Pkg); if (Pkg.end() == true) { if (unlikely(Owner->NewPackage(Pkg, PackageName, Arch) == false)) return false; } // Is it a file dependency? if (unlikely(PackageName[0] == '/')) FoundFileDeps = true; /* Caching the old end point speeds up generation substantially */ if (OldDepVer != Ver) { OldDepLast = NULL; OldDepVer = Ver; } return Owner->NewDepends(Pkg, Ver, Version, Op, Type, OldDepLast); } /*}}}*/ // ListParser::NewProvides - Create a Provides element /*{{{*/ // --------------------------------------------------------------------- /* */ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver, const string &PkgName, const string &PkgArch, const string &Version) { pkgCache &Cache = Owner->Cache; // We do not add self referencing provides if (Ver.ParentPkg().Name() == PkgName && (PkgArch == Ver.ParentPkg().Arch() || (PkgArch == "all" && strcmp((Cache.StrP + Cache.HeaderP->Architecture), Ver.ParentPkg().Arch()) == 0))) return true; // Get a structure map_pointer_t const Provides = Owner->AllocateInMap(sizeof(pkgCache::Provides)); if (unlikely(Provides == 0)) return false; Cache.HeaderP->ProvidesCount++; // Fill it in pkgCache::PrvIterator Prv(Cache,Cache.ProvideP + Provides,Cache.PkgP); Dynamic DynPrv(Prv); Prv->Version = Ver.Index(); Prv->NextPkgProv = Ver->ProvidesList; Ver->ProvidesList = Prv.Index(); if (Version.empty() == false) { map_stringitem_t const idxProvideVersion = WriteString(Version); Prv->ProvideVersion = idxProvideVersion; if (unlikely(idxProvideVersion == 0)) return false; } // Locate the target package pkgCache::PkgIterator Pkg; Dynamic DynPkg(Pkg); if (unlikely(Owner->NewPackage(Pkg,PkgName, PkgArch) == false)) return false; // Link it to the package Prv->ParentPkg = Pkg.Index(); Prv->NextProvides = Pkg->ProvidesList; Pkg->ProvidesList = Prv.Index(); return true; } /*}}}*/ bool pkgCacheGenerator::ListParser::SameVersion(unsigned short const Hash,/*{{{*/ pkgCache::VerIterator const &Ver) { return Hash == Ver->Hash; } /*}}}*/ // CacheGenerator::SelectFile - Select the current file being parsed /*{{{*/ // --------------------------------------------------------------------- /* This is used to select which file is to be associated with all newly added versions. The caller is responsible for setting the IMS fields. */ bool pkgCacheGenerator::SelectFile(const string &File,const string &Site, const pkgIndexFile &Index, unsigned long Flags) { // Get some space for the structure map_pointer_t const idxFile = AllocateInMap(sizeof(*CurrentFile)); if (unlikely(idxFile == 0)) return false; CurrentFile = Cache.PkgFileP + idxFile; // Fill it in map_stringitem_t const idxFileName = WriteStringInMap(File); map_stringitem_t const idxSite = WriteUniqString(Site); if (unlikely(idxFileName == 0 || idxSite == 0)) return false; CurrentFile->FileName = idxFileName; CurrentFile->Site = idxSite; CurrentFile->NextFile = Cache.HeaderP->FileList; CurrentFile->Flags = Flags; CurrentFile->ID = Cache.HeaderP->PackageFileCount; map_stringitem_t const idxIndexType = WriteUniqString(Index.GetType()->Label); if (unlikely(idxIndexType == 0)) return false; CurrentFile->IndexType = idxIndexType; PkgFileName = File; Cache.HeaderP->FileList = CurrentFile - Cache.PkgFileP; Cache.HeaderP->PackageFileCount++; if (Progress != 0) Progress->SubProgress(Index.Size()); return true; } /*}}}*/ // CacheGenerator::WriteUniqueString - Insert a unique string /*{{{*/ // --------------------------------------------------------------------- /* This is used to create handles to strings. Given the same text it always returns the same number */ map_stringitem_t pkgCacheGenerator::WriteUniqString(const char *S, unsigned int Size) { /* We use a very small transient hash table here, this speeds up generation by a fair amount on slower machines */ pkgCache::StringItem *&Bucket = UniqHash[(S[0]*5 + S[1]) % _count(UniqHash)]; if (Bucket != 0 && stringcmp(S,S+Size,Cache.StrP + Bucket->String) == 0) return Bucket->String; // Search for an insertion point pkgCache::StringItem *I = Cache.StringItemP + Cache.HeaderP->StringList; int Res = 1; map_stringitem_t *Last = &Cache.HeaderP->StringList; for (; I != Cache.StringItemP; Last = &I->NextItem, I = Cache.StringItemP + I->NextItem) { Res = stringcmp(S,S+Size,Cache.StrP + I->String); if (Res >= 0) break; } // Match if (Res == 0) { Bucket = I; return I->String; } // Get a structure void const * const oldMap = Map.Data(); map_pointer_t const Item = AllocateInMap(sizeof(pkgCache::StringItem)); if (Item == 0) return 0; map_stringitem_t const idxString = WriteStringInMap(S,Size); if (unlikely(idxString == 0)) return 0; if (oldMap != Map.Data()) { Last += (map_pointer_t const * const) Map.Data() - (map_pointer_t const * const) oldMap; I += (pkgCache::StringItem const * const) Map.Data() - (pkgCache::StringItem const * const) oldMap; } *Last = Item; // Fill in the structure pkgCache::StringItem *ItemP = Cache.StringItemP + Item; ItemP->NextItem = I - Cache.StringItemP; ItemP->String = idxString; Bucket = ItemP; return ItemP->String; } /*}}}*/ // CheckValidity - Check that a cache is up-to-date /*{{{*/ // --------------------------------------------------------------------- /* This just verifies that each file in the list of index files exists, has matching attributes with the cache and the cache does not have any extra files. */ static bool CheckValidity(const string &CacheFile, pkgSourceList &List, 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; } if (List.GetLastModifiedTime() > GetModificationTime(CacheFile)) { if (Debug == true) std::clog << "sources.list is newer than the cache" << std::endl; return false; } // Map it FileFd CacheF(CacheFile,FileFd::ReadOnly); SPtr 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; } /* Now we check every index file, see if it is in the cache, verify the IMS data and check that it is on the disk too.. */ SPtrArray 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) { #if 0 // mvo: we no longer give a message here (Default Sources spec) _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; } if (OutMap != 0) *OutMap = Map.UnGuard(); return true; } /*}}}*/ // ComputeSize - Compute the total size of a bunch of files /*{{{*/ // --------------------------------------------------------------------- /* Size is kind of an abstract notion that is only used for the progress meter */ static map_filesize_t ComputeSize(FileIterator Start,FileIterator End) { map_filesize_t TotalSize = 0; for (; Start < End; ++Start) { if ((*Start)->HasPackages() == false) continue; TotalSize += (*Start)->Size(); } return TotalSize; } /*}}}*/ // BuildCache - Merge the list of index files into the cache /*{{{*/ // --------------------------------------------------------------------- /* */ static bool BuildCache(pkgCacheGenerator &Gen, OpProgress *Progress, map_filesize_t &CurrentSize,map_filesize_t TotalSize, FileIterator Start, FileIterator End) { FileIterator I; for (I = Start; I != End; ++I) { if ((*I)->HasPackages() == false) continue; if ((*I)->Exists() == false) continue; if ((*I)->FindInCache(Gen.GetCache()).end() == false) { _error->Warning("Duplicate sources.list entry %s", (*I)->Describe().c_str()); continue; } map_filesize_t Size = (*I)->Size(); if (Progress != NULL) Progress->OverallProgress(CurrentSize,TotalSize,Size,_("Reading package lists")); CurrentSize += Size; if ((*I)->Merge(Gen,Progress) == false) return false; } if (Gen.HasFileDeps() == true) { if (Progress != NULL) Progress->Done(); TotalSize = ComputeSize(Start, End); CurrentSize = 0; for (I = Start; I != End; ++I) { map_filesize_t Size = (*I)->Size(); if (Progress != NULL) Progress->OverallProgress(CurrentSize,TotalSize,Size,_("Collecting File Provides")); CurrentSize += Size; if ((*I)->MergeFileProvides(Gen,Progress) == false) return false; } } return true; } /*}}}*/ // CacheGenerator::CreateDynamicMMap - load an mmap with configuration options /*{{{*/ DynamicMMap* pkgCacheGenerator::CreateDynamicMMap(FileFd *CacheF, unsigned long Flags) { map_filesize_t const MapStart = _config->FindI("APT::Cache-Start", 24*1024*1024); map_filesize_t const MapGrow = _config->FindI("APT::Cache-Grow", 1*1024*1024); map_filesize_t const MapLimit = _config->FindI("APT::Cache-Limit", 0); Flags |= MMap::Moveable; if (_config->FindB("APT::Cache-Fallback", false) == true) Flags |= MMap::Fallback; if (CacheF != NULL) return new DynamicMMap(*CacheF, Flags, MapStart, MapGrow, MapLimit); else return new DynamicMMap(Flags, MapStart, MapGrow, MapLimit); } /*}}}*/ // CacheGenerator::MakeStatusCache - Construct the status cache /*{{{*/ // --------------------------------------------------------------------- /* This makes sure that the status cache (the cache that has all index files from the sources list and all local ones) is ready to be mmaped. If OutMap is not zero then a MMap object representing the cache will be stored there. This is pretty much mandetory if you are using AllowMem. AllowMem lets the function be run as non-root where it builds the cache 'fast' into a memory buffer. */ APT_DEPRECATED bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress, MMap **OutMap, bool AllowMem) { return pkgCacheGenerator::MakeStatusCache(List, &Progress, OutMap, AllowMem); } bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress, MMap **OutMap,bool AllowMem) { bool const Debug = _config->FindB("Debug::pkgCacheGen", false); std::vector Files; for (std::vector::const_iterator i = List.begin(); i != List.end(); ++i) { std::vector *Indexes = (*i)->GetIndexFiles(); for (std::vector::const_iterator j = Indexes->begin(); j != Indexes->end(); ++j) Files.push_back (*j); } map_filesize_t const EndOfSource = Files.size(); if (_system->AddStatusFiles(Files) == false) return false; // Decide if we can write to the files.. string const CacheFile = _config->FindFile("Dir::Cache::pkgcache"); string const SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache"); // ensure the cache directory exists if (CacheFile.empty() == false || SrcCacheFile.empty() == false) { string dir = _config->FindDir("Dir::Cache"); size_t const len = dir.size(); if (len > 5 && dir.find("/apt/", len - 6, 5) == len - 5) dir = dir.substr(0, len - 5); if (CacheFile.empty() == false) CreateDirectory(dir, flNotFile(CacheFile)); if (SrcCacheFile.empty() == false) CreateDirectory(dir, flNotFile(SrcCacheFile)); } // Decide if we can write to the cache bool Writeable = false; if (CacheFile.empty() == false) Writeable = access(flNotFile(CacheFile).c_str(),W_OK) == 0; 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()); if (Progress != NULL) Progress->OverallProgress(0,1,1,_("Reading package lists")); // Cache is OK, Fin. if (CheckValidity(CacheFile, List, Files.begin(),Files.end(),OutMap) == true) { if (Progress != NULL) 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. */ SPtr CacheF; SPtr Map; if (Writeable == true && CacheFile.empty() == false) { _error->PushToStack(); unlink(CacheFile.c_str()); CacheF = new FileFd(CacheFile,FileFd::WriteAtomic); fchmod(CacheF->Fd(),0644); Map = CreateDynamicMMap(CacheF, MMap::Public); if (_error->PendingError() == true) { delete CacheF.UnGuard(); delete Map.UnGuard(); if (Debug == true) std::clog << "Open filebased MMap FAILED" << std::endl; Writeable = false; if (AllowMem == false) { _error->MergeWithStack(); return false; } _error->RevertToStack(); } else { _error->MergeWithStack(); if (Debug == true) std::clog << "Open filebased MMap" << std::endl; } } if (Writeable == false || CacheFile.empty() == true) { // Just build it in memory.. Map = CreateDynamicMMap(NULL); if (Debug == true) std::clog << "Open memory Map (not filebased)" << std::endl; } // Lets try the source cache. map_filesize_t CurrentSize = 0; map_filesize_t TotalSize = 0; if (CheckValidity(SrcCacheFile, List, 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); map_pointer_t 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) return false; if (BuildCache(Gen,Progress,CurrentSize,TotalSize, Files.begin()+EndOfSource,Files.end()) == false) return false; } else { if (Debug == true) std::clog << "srcpkgcache.bin is NOT valid - rebuild" << std::endl; TotalSize = ComputeSize(Files.begin(),Files.end()); // Build the source cache pkgCacheGenerator Gen(Map.Get(),Progress); if (_error->PendingError() == true) return false; if (BuildCache(Gen,Progress,CurrentSize,TotalSize, Files.begin(),Files.begin()+EndOfSource) == false) return false; // Write it back if (Writeable == true && SrcCacheFile.empty() == false) { FileFd SCacheF(SrcCacheFile,FileFd::WriteAtomic); if (_error->PendingError() == true) return false; fchmod(SCacheF.Fd(),0644); // Write out the main data if (SCacheF.Write(Map->Data(),Map->Size()) == false) return _error->Error(_("IO Error saving source cache")); SCacheF.Sync(); // Write out the proper header Gen.GetCache().HeaderP->Dirty = false; if (SCacheF.Seek(0) == false || SCacheF.Write(Map->Data(),sizeof(*Gen.GetCache().HeaderP)) == false) return _error->Error(_("IO Error saving source cache")); Gen.GetCache().HeaderP->Dirty = true; SCacheF.Sync(); } // Build the status cache if (BuildCache(Gen,Progress,CurrentSize,TotalSize, Files.begin()+EndOfSource,Files.end()) == false) return false; } if (Debug == true) std::clog << "Caches are ready for shipping" << std::endl; if (_error->PendingError() == true) return false; if (OutMap != 0) { if (CacheF != 0) { delete Map.UnGuard(); *OutMap = new MMap(*CacheF,0); } else { *OutMap = Map.UnGuard(); } } return true; } /*}}}*/ // CacheGenerator::MakeOnlyStatusCache - Build only a status files cache/*{{{*/ // --------------------------------------------------------------------- /* */ APT_DEPRECATED bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap) { return pkgCacheGenerator::MakeOnlyStatusCache(&Progress, OutMap); } bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap) { std::vector Files; map_filesize_t EndOfSource = Files.size(); if (_system->AddStatusFiles(Files) == false) return false; SPtr Map = CreateDynamicMMap(NULL); map_filesize_t CurrentSize = 0; map_filesize_t TotalSize = 0; TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end()); // Build the status cache if (Progress != NULL) Progress->OverallProgress(0,1,1,_("Reading package lists")); pkgCacheGenerator Gen(Map.Get(),Progress); if (_error->PendingError() == true) return false; if (BuildCache(Gen,Progress,CurrentSize,TotalSize, Files.begin()+EndOfSource,Files.end()) == false) return false; if (_error->PendingError() == true) return false; *OutMap = Map.UnGuard(); return true; } /*}}}*/ // IsDuplicateDescription /*{{{*/ static bool IsDuplicateDescription(pkgCache::DescIterator Desc, MD5SumValue const &CurMd5, std::string const &CurLang) { // Descriptions in the same link-list have all the same md5 if (Desc.end() == true || MD5SumValue(Desc.md5()) != CurMd5) return false; for (; Desc.end() == false; ++Desc) if (Desc.LanguageCode() == CurLang) return true; return false; } /*}}}*/ // CacheGenerator::FinishCache /*{{{*/ bool pkgCacheGenerator::FinishCache(OpProgress * /*Progress*/) { return true; } /*}}}*/