X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/bb0f6a34c4cebea7884de828c011dc85765ff820..b105ca65292e4af6ca2093351fd2a61180054e14:/apt-pkg/pkgcachegen.cc diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index 26a5e60a6..f0b5a982e 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -18,8 +18,6 @@ #include #include #include -#include -#include #include #include #include @@ -36,11 +34,14 @@ #include #include #include +#include +#include #include #include #include /*}}}*/ +template using Dynamic = pkgCacheGenerator::Dynamic; typedef std::vector::iterator FileIterator; template std::vector pkgCacheGenerator::Dynamic::toReMap; @@ -48,23 +49,30 @@ static bool IsDuplicateDescription(pkgCache::DescIterator Desc, MD5SumValue const &CurMd5, std::string const &CurLang); using std::string; +using APT::StringView; // 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), - CurrentRlsFile(NULL), CurrentFile(NULL), FoundFileDeps(0), d(NULL) + CurrentRlsFile(NULL), CurrentFile(NULL), d(NULL) +{ +} +bool pkgCacheGenerator::Start() { - 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; + _error->PushToStack(); + Map.RawAllocate(sizeof(pkgCache::Header)); + bool const newError = _error->PendingError(); + _error->MergeWithStack(); + if (newError) + return false; + if (Map.Size() <= 0) + return false; Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0])); @@ -73,16 +81,15 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) : // make room for the hashtables for packages and groups if (Map.RawAllocate(2 * (Cache.HeaderP->GetHashTableSize() * sizeof(map_pointer_t))) == 0) - return; + return false; map_stringitem_t const idxVerSysName = WriteStringInMap(_system->VS->Label); if (unlikely(idxVerSysName == 0)) - return; - Cache.HeaderP->VerSysName = idxVerSysName; + return false; map_stringitem_t const idxArchitecture = StoreString(MIXED, _config->Find("APT::Architecture")); if (unlikely(idxArchitecture == 0)) - return; - Cache.HeaderP->Architecture = idxArchitecture; + return false; + map_stringitem_t idxArchitectures; std::vector archs = APT::Configuration::getArchitectures(); if (archs.size() > 1) @@ -91,14 +98,20 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) : std::string list = *a; for (++a; a != archs.end(); ++a) list.append(",").append(*a); - map_stringitem_t const idxArchitectures = WriteStringInMap(list); + idxArchitectures = WriteStringInMap(list); if (unlikely(idxArchitectures == 0)) - return; - Cache.HeaderP->SetArchitectures(idxArchitectures); + return false; } else - Cache.HeaderP->SetArchitectures(idxArchitecture); + idxArchitectures = idxArchitecture; + Cache.HeaderP = (pkgCache::Header *)Map.Data(); + Cache.HeaderP->VerSysName = idxVerSysName; + Cache.HeaderP->Architecture = idxArchitecture; + Cache.HeaderP->SetArchitectures(idxArchitectures); + + // Calculate the hash for the empty map, so ReMap does not fail + Cache.HeaderP->CacheFileSize = Cache.CacheHash(); Cache.ReMap(); } else @@ -107,14 +120,12 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) : 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; - } + return _error->Error(_("Cache has an incompatible versioning system")); } Cache.HeaderP->Dirty = true; Map.Sync(0,sizeof(pkgCache::Header)); + return true; } /*}}}*/ // CacheGenerator::~pkgCacheGenerator - Destructor /*{{{*/ @@ -123,17 +134,24 @@ pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) : advoid a problem during a crash */ pkgCacheGenerator::~pkgCacheGenerator() { - if (_error->PendingError() == true) + if (_error->PendingError() == true || Map.validData() == false) return; if (Map.Sync() == false) return; Cache.HeaderP->Dirty = false; - Cache.HeaderP->CacheFileSize = Map.Size(); + Cache.HeaderP->CacheFileSize = Cache.CacheHash(); + + if (_config->FindB("Debug::pkgCacheGen", false)) + std::clog << "Produced cache with hash " << Cache.HeaderP->CacheFileSize << std::endl; Map.Sync(0,sizeof(pkgCache::Header)); } /*}}}*/ -void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newMap) {/*{{{*/ +void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newMap, size_t oldSize) {/*{{{*/ + // Prevent multiple remaps of the same iterator. If seen.insert(iterator) + // returns (something, true) the iterator was not yet seen and we can + // remap it. + std::unordered_set seen; if (oldMap == newMap) return; @@ -147,53 +165,74 @@ void pkgCacheGenerator::ReMap(void const * const oldMap, void const * const newM for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); for (std::vector::const_iterator i = Dynamic::toReMap.begin(); i != Dynamic::toReMap.end(); ++i) - (*i)->ReMap(oldMap, newMap); + if (std::get<1>(seen.insert(*i)) == true) + (*i)->ReMap(oldMap, newMap); + for (APT::StringView* ViewP : Dynamic::toReMap) { + if (std::get<1>(seen.insert(ViewP)) == false) + continue; + // Ignore views outside of the cache. + if (ViewP->data() < static_cast(oldMap) + || ViewP->data() > static_cast(oldMap) + oldSize) + continue; + const char *data = ViewP->data() + (static_cast(newMap) - static_cast(oldMap)); + *ViewP = StringView(data , ViewP->size()); + } } /*}}}*/ // CacheGenerator::WriteStringInMap /*{{{*/ map_stringitem_t pkgCacheGenerator::WriteStringInMap(const char *String, const unsigned long &Len) { + size_t oldSize = Map.Size(); void const * const oldMap = Map.Data(); map_stringitem_t const index = Map.WriteString(String, Len); if (index != 0) - ReMap(oldMap, Map.Data()); + ReMap(oldMap, Map.Data(), oldSize); return index; } /*}}}*/ // CacheGenerator::WriteStringInMap /*{{{*/ map_stringitem_t pkgCacheGenerator::WriteStringInMap(const char *String) { + size_t oldSize = Map.Size(); void const * const oldMap = Map.Data(); map_stringitem_t const index = Map.WriteString(String); if (index != 0) - ReMap(oldMap, Map.Data()); + ReMap(oldMap, Map.Data(), oldSize); return index; } /*}}}*/ map_pointer_t pkgCacheGenerator::AllocateInMap(const unsigned long &size) {/*{{{*/ + size_t oldSize = Map.Size(); void const * const oldMap = Map.Data(); map_pointer_t const index = Map.Allocate(size); if (index != 0) - ReMap(oldMap, Map.Data()); + ReMap(oldMap, Map.Data(), oldSize); return index; } /*}}}*/ @@ -217,8 +256,10 @@ bool pkgCacheGenerator::MergeList(ListParser &List, if (Counter % 100 == 0 && Progress != 0) Progress->Progress(List.Offset()); - string Arch = List.Architecture(); - string const Version = List.Version(); + APT::StringView Arch = List.Architecture(); + Dynamic DynArch(Arch); + APT::StringView Version = List.Version(); + Dynamic DynVersion(Version); if (Version.empty() == true && Arch.empty() == true) { // package descriptions @@ -227,22 +268,6 @@ bool pkgCacheGenerator::MergeList(ListParser &List, 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); @@ -265,10 +290,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List, } if (OutVer != 0) - { - FoundFileDeps |= List.HasFileDeps(); return true; - } } if (Cache.HeaderP->PackageCount >= std::numeric_limits::max()) @@ -284,7 +306,6 @@ bool pkgCacheGenerator::MergeList(ListParser &List, return _error->Error(_("Wow, you exceeded the number of dependencies " "this APT is capable of.")); - FoundFileDeps |= List.HasFileDeps(); return true; } // CacheGenerator::MergeListGroup /*{{{*/ @@ -320,8 +341,6 @@ bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator // 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) { @@ -351,7 +370,7 @@ bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator /*}}}*/ // CacheGenerator::MergeListVersion /*{{{*/ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator &Pkg, - std::string const &Version, pkgCache::VerIterator* &OutVer) + APT::StringView const &Version, pkgCache::VerIterator* &OutVer) { pkgCache::VerIterator Ver = Pkg.VersionList(); Dynamic DynVer(Ver); @@ -366,13 +385,28 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator int Res = 1; for (; Ver.end() == false; LastVer = &Ver->NextVer, ++Ver) { - Res = Cache.VS->CmpVersion(Version,Ver.VerStr()); + char const * const VerStr = Ver.VerStr(); + Res = Cache.VS->DoCmpVersion(Version.data(), Version.data() + Version.length(), + VerStr, VerStr + strlen(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; + if (Res == 0) + { + if (List.SameVersion(Hash, Ver) == true) + break; + // sort (volatile) sources above not-sources like the status file + if ((CurrentFile->Flags & pkgCache::Flag::NotSource) == 0) + { + auto VF = Ver.FileList(); + for (; VF.end() == false; ++VF) + if (VF.File().Flagged(pkgCache::Flag::NotSource) == false) + break; + if (VF.end() == true) + break; + } + } // proceed with the next till we have either the right // or we found another version (which will be lower) } @@ -401,7 +435,7 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator // Add a new version map_pointer_t const verindex = NewVersion(Ver, Version, Pkg.Index(), Hash, *LastVer); - if (verindex == 0 && _error->PendingError()) + if (unlikely(verindex == 0)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Pkg.Name(), "NewVersion", 1); @@ -442,40 +476,6 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator 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)"), @@ -490,8 +490,6 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator /* 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 @@ -523,7 +521,7 @@ bool pkgCacheGenerator::AddNewDescription(ListParser &List, pkgCache::VerIterato Dynamic DynDesc(Desc); map_pointer_t const descindex = NewDescription(Desc, lang, CurMd5, md5idx); - if (unlikely(descindex == 0 && _error->PendingError())) + if (unlikely(descindex == 0)) return _error->Error(_("Error occurred while processing %s (%s%d)"), Ver.ParentPkg().Name(), "NewDescription", 1); @@ -545,62 +543,12 @@ bool pkgCacheGenerator::AddNewDescription(ListParser &List, pkgCache::VerIterato } /*}}}*/ /*}}}*/ -// 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) +bool pkgCacheGenerator::NewGroup(pkgCache::GrpIterator &Grp, StringView Name) { + Dynamic DName(Name); Grp = Cache.FindGrp(Name); if (Grp.end() == false) return true; @@ -619,7 +567,8 @@ bool pkgCacheGenerator::NewGroup(pkgCache::GrpIterator &Grp, const string &Name) // Insert it into the hash table unsigned long const Hash = Cache.Hash(Name); map_pointer_t *insertAt = &Cache.HeaderP->GrpHashTableP()[Hash]; - while (*insertAt != 0 && strcasecmp(Name.c_str(), Cache.StrP + (Cache.GrpP + *insertAt)->Name) > 0) + + while (*insertAt != 0 && Name.compare(Cache.ViewString((Cache.GrpP + *insertAt)->Name)) > 0) insertAt = &(Cache.GrpP + *insertAt)->Next; Grp->Next = *insertAt; *insertAt = Group; @@ -631,9 +580,11 @@ bool pkgCacheGenerator::NewGroup(pkgCache::GrpIterator &Grp, const string &Name) // 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) { +bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg, StringView Name, + StringView Arch) { pkgCache::GrpIterator Grp; + Dynamic DName(Name); + Dynamic DArch(Arch); Dynamic DynGrp(Grp); if (unlikely(NewGroup(Grp, Name) == false)) return false; @@ -665,41 +616,61 @@ bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name // Insert it into the hash table map_id_t const Hash = Cache.Hash(Name); map_pointer_t *insertAt = &Cache.HeaderP->PkgHashTableP()[Hash]; - while (*insertAt != 0 && strcasecmp(Name.c_str(), Cache.StrP + (Cache.GrpP + (Cache.PkgP + *insertAt)->Group)->Name) > 0) + while (*insertAt != 0 && Name.compare(Cache.StrP + (Cache.GrpP + (Cache.PkgP + *insertAt)->Group)->Name) > 0) insertAt = &(Cache.PkgP + *insertAt)->NextPackage; Pkg->NextPackage = *insertAt; *insertAt = Package; } else // Group the Packages together { - // but first get implicit provides done - if (APT::Configuration::checkArchitecture(Pkg.Arch()) == true) + // if sibling is provided by another package, this one is too { pkgCache::PkgIterator const M = Grp.FindPreferredPkg(false); // native or any foreign pkg will do - if (M.end() == false) - for (pkgCache::PrvIterator Prv = M.ProvidesList(); Prv.end() == false; ++Prv) + if (M.end() == false) { + pkgCache::PrvIterator Prv; + Dynamic DynPrv(Prv); + for (Prv = M.ProvidesList(); Prv.end() == false; ++Prv) { if ((Prv->Flags & pkgCache::Flag::ArchSpecific) != 0) continue; pkgCache::VerIterator Ver = Prv.OwnerVer(); + Dynamic DynVer(Ver); if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed || ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign && (Prv->Flags & pkgCache::Flag::MultiArchImplicit) == 0)) + { + if (APT::Configuration::checkArchitecture(Ver.ParentPkg().Arch()) == false) + continue; if (NewProvides(Ver, Pkg, Prv->ProvideVersion, Prv->Flags) == false) return false; + } } + } + } + // let M-A:foreign package siblings provide this package + { + pkgCache::PkgIterator P; + pkgCache::VerIterator Ver; + Dynamic DynP(P); + Dynamic DynVer(Ver); - for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P)) - for (pkgCache::VerIterator Ver = P.VersionList(); Ver.end() == false; ++Ver) + for (P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P)) + { + if (APT::Configuration::checkArchitecture(P.Arch()) == false) + continue; + for (Ver = P.VersionList(); Ver.end() == false; ++Ver) if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) if (NewProvides(Ver, Pkg, Ver->VerStr, pkgCache::Flag::MultiArchImplicit) == false) return false; + } } // and negative dependencies, don't forget negative dependencies { pkgCache::PkgIterator const M = Grp.FindPreferredPkg(false); - if (M.end() == false) - for (pkgCache::DepIterator Dep = M.RevDependsList(); Dep.end() == false; ++Dep) + if (M.end() == false) { + pkgCache::DepIterator Dep; + Dynamic DynDep(Dep); + for (Dep = M.RevDependsList(); Dep.end() == false; ++Dep) { if ((Dep->CompareOp & (pkgCache::Dep::ArchSpecific | pkgCache::Dep::MultiArchImplicit)) != 0) continue; @@ -707,10 +678,12 @@ bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name Dep->Type != pkgCache::Dep::Replaces) continue; pkgCache::VerIterator Ver = Dep.ParentVer(); + Dynamic DynVer(Ver); map_pointer_t * unused = NULL; if (NewDepends(Pkg, Ver, Dep->Version, Dep->CompareOp, Dep->Type, unused) == false) return false; } + } } // this package is the new last package @@ -719,6 +692,52 @@ bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,const string &Name LastPkg->NextPackage = Package; } Grp->LastPackage = Package; + + // lazy-create foo (of amd64) provides foo:amd64 at the time we first need it + if (Arch == "any") + { + size_t const found = Name.rfind(':'); + StringView ArchA = Name.substr(found + 1); + if (ArchA != "any") + { + // ArchA is used inside the loop which might remap (NameA is not used) + Dynamic DynArchA(ArchA); + StringView NameA = Name.substr(0, found); + pkgCache::PkgIterator PkgA = Cache.FindPkg(NameA, ArchA); + Dynamic DynPkgA(PkgA); + if (PkgA.end()) + { + Dynamic DynNameA(NameA); + if (NewPackage(PkgA, NameA, ArchA) == false) + return false; + } + if (unlikely(PkgA.end())) + return _error->Fatal("NewPackage was successful for %s:%s," + "but the package doesn't exist anyhow!", + NameA.to_string().c_str(), ArchA.to_string().c_str()); + else + { + pkgCache::PrvIterator Prv = PkgA.ProvidesList(); + for (; Prv.end() == false; ++Prv) + { + if (Prv.IsMultiArchImplicit()) + continue; + pkgCache::VerIterator V = Prv.OwnerVer(); + if (ArchA != V.ParentPkg().Arch()) + continue; + if (NewProvides(V, Pkg, V->VerStr, pkgCache::Flag::MultiArchImplicit | pkgCache::Flag::ArchSpecific) == false) + return false; + } + pkgCache::VerIterator V = PkgA.VersionList(); + Dynamic DynV(V); + for (; V.end() == false; ++V) + { + if (NewProvides(V, Pkg, V->VerStr, pkgCache::Flag::MultiArchImplicit | pkgCache::Flag::ArchSpecific) == false) + return false; + } + } + } + } return true; } /*}}}*/ @@ -727,9 +746,8 @@ 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(); + APT::StringView Arch = P.Arch() == NULL ? "" : P.Arch(); + Dynamic DynArch(Arch); map_pointer_t *OldDepLast = NULL; /* MultiArch handling introduces a lot of implicit Dependencies: - MultiArch: same → Co-Installable if they have the same version @@ -830,7 +848,7 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver, // --------------------------------------------------------------------- /* This puts a version structure in the linked list */ map_pointer_t pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver, - const string &VerStr, + APT::StringView const &VerStr, map_pointer_t const ParentPkg, unsigned short const Hash, map_pointer_t const Next) @@ -859,8 +877,8 @@ map_pointer_t pkgCacheGenerator::NewVersion(pkgCache::VerIterator &Ver, continue; for (pkgCache::VerIterator V = P.VersionList(); V.end() == false; ++V) { - int const cmp = strcmp(V.VerStr(), VerStr.c_str()); - if (cmp == 0) + int const cmp = strncmp(V.VerStr(), VerStr.data(), VerStr.length()); + if (cmp == 0 && V.VerStr()[VerStr.length()] == '\0') { Ver->VerStr = V->VerStr; return Version; @@ -1049,33 +1067,32 @@ bool pkgCacheGenerator::NewDepends(pkgCache::PkgIterator &Pkg, // --------------------------------------------------------------------- /* 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, +bool pkgCacheListParser::NewDepends(pkgCache::VerIterator &Ver, + StringView PackageName, + StringView Arch, + StringView Version, uint8_t const Op, uint8_t const Type) { pkgCache::GrpIterator Grp; Dynamic DynGrp(Grp); + Dynamic DynPackageName(PackageName); + Dynamic DynArch(Arch); + Dynamic DynVersion(Version); if (unlikely(Owner->NewGroup(Grp, PackageName) == false)) return false; - // Is it a file dependency? - if (unlikely(PackageName[0] == '/')) - FoundFileDeps = true; - map_stringitem_t idxVersion = 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) + if (CmpOp == pkgCache::Dep::Equals && Version == Ver.VerStr()) idxVersion = Ver->VerStr; if (idxVersion == 0) { - idxVersion = StoreString(VERSIONNUMBER, Version); + idxVersion = StoreString(pkgCacheGenerator::VERSIONNUMBER, Version); if (unlikely(idxVersion == 0)) return false; } @@ -1122,17 +1139,21 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator &Ver, } /*}}}*/ // ListParser::NewProvides - Create a Provides element /*{{{*/ -bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver, - const string &PkgName, - const string &PkgArch, - const string &Version, +bool pkgCacheListParser::NewProvides(pkgCache::VerIterator &Ver, + StringView PkgName, + StringView PkgArch, + StringView Version, uint8_t const Flags) { pkgCache const &Cache = Owner->Cache; + Dynamic DynPkgName(PkgName); + Dynamic DynArch(PkgArch); + Dynamic DynVersion(Version); // 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))) + (PkgArch == "all" && strcmp((Cache.StrP + Cache.HeaderP->Architecture), Ver.ParentPkg().Arch()) == 0)) && + (Version.empty() || Version == Ver.VerStr())) return true; // Locate the target package @@ -1143,7 +1164,7 @@ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator &Ver, map_stringitem_t idxProvideVersion = 0; if (Version.empty() == false) { - idxProvideVersion = StoreString(VERSIONNUMBER, Version); + idxProvideVersion = StoreString(pkgCacheGenerator::VERSIONNUMBER, Version); if (unlikely(idxProvideVersion == 0)) return false; } @@ -1176,25 +1197,32 @@ bool pkgCacheGenerator::NewProvides(pkgCache::VerIterator &Ver, } /*}}}*/ // ListParser::NewProvidesAllArch - add provides for all architectures /*{{{*/ -bool pkgCacheGenerator::ListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, string const &Package, - string const &Version, uint8_t const Flags) { +bool pkgCacheListParser::NewProvidesAllArch(pkgCache::VerIterator &Ver, StringView Package, + StringView Version, uint8_t const Flags) { pkgCache &Cache = Owner->Cache; - pkgCache::GrpIterator const Grp = Cache.FindGrp(Package); + pkgCache::GrpIterator Grp = Cache.FindGrp(Package); + Dynamic DynGrp(Grp); + Dynamic DynPackage(Package); + Dynamic DynVersion(Version); + if (Grp.end() == true) return NewProvides(Ver, Package, Cache.NativeArch(), Version, Flags); else { map_stringitem_t idxProvideVersion = 0; if (Version.empty() == false) { - idxProvideVersion = StoreString(VERSIONNUMBER, Version); + idxProvideVersion = StoreString(pkgCacheGenerator::VERSIONNUMBER, Version); if (unlikely(idxProvideVersion == 0)) return false; } bool const isImplicit = (Flags & pkgCache::Flag::MultiArchImplicit) == pkgCache::Flag::MultiArchImplicit; bool const isArchSpecific = (Flags & pkgCache::Flag::ArchSpecific) == pkgCache::Flag::ArchSpecific; - pkgCache::PkgIterator const OwnerPkg = Ver.ParentPkg(); - for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) + pkgCache::PkgIterator OwnerPkg = Ver.ParentPkg(); + Dynamic DynOwnerPkg(OwnerPkg); + pkgCache::PkgIterator Pkg; + Dynamic DynPkg(Pkg); + for (Pkg = Grp.PackageList(); Pkg.end() == false; Pkg = Grp.NextPkg(Pkg)) { if (isImplicit && OwnerPkg == Pkg) continue; @@ -1207,7 +1235,7 @@ bool pkgCacheGenerator::ListParser::NewProvidesAllArch(pkgCache::VerIterator &Ve return true; } /*}}}*/ -bool pkgCacheGenerator::ListParser::SameVersion(unsigned short const Hash,/*{{{*/ +bool pkgCacheListParser::SameVersion(unsigned short const Hash, /*{{{*/ pkgCache::VerIterator const &Ver) { return Hash == Ver->Hash; @@ -1307,23 +1335,21 @@ bool pkgCacheGenerator::SelectFile(std::string const &File, map_stringitem_t pkgCacheGenerator::StoreString(enum StringType const type, const char *S, unsigned int Size) { - std::string const key(S, Size); - - std::map * strings; + auto strings = &strMixed; switch(type) { case MIXED: strings = &strMixed; break; case PKGNAME: strings = &strPkgNames; break; case VERSIONNUMBER: strings = &strVersions; break; case SECTION: strings = &strSections; break; - default: _error->Fatal("Unknown enum type used for string storage of '%s'", key.c_str()); return 0; + default: _error->Fatal("Unknown enum type used for string storage of '%.*s'", Size, S); return 0; } - std::map::const_iterator const item = strings->find(key); + auto const item = strings->find({S, Size, nullptr, 0}); if (item != strings->end()) - return item->second; + return item->item; map_stringitem_t const idxString = WriteStringInMap(S,Size); - strings->insert(std::make_pair(key, idxString)); + strings->insert({nullptr, Size, this, idxString}); return idxString; } /*}}}*/ @@ -1332,18 +1358,25 @@ map_stringitem_t pkgCacheGenerator::StoreString(enum StringType const type, cons /* 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, +class APT_HIDDEN ScopedErrorRevert { +public: + ScopedErrorRevert() { _error->PushToStack(); } + ~ScopedErrorRevert() { _error->RevertToStack(); } +}; +static bool CheckValidity(const string &CacheFile, pkgSourceList &List, - FileIterator Start, - FileIterator End, - MMap **OutMap = 0) + FileIterator const Start, + FileIterator const End, + MMap **OutMap = 0, + pkgCache **OutCache = 0) { + ScopedErrorRevert ser; 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; + std::clog << "CacheFile " << CacheFile << " doesn't exist" << std::endl; return false; } @@ -1356,18 +1389,20 @@ static bool CheckValidity(const string &CacheFile, // Map it FileFd CacheF(CacheFile,FileFd::ReadOnly); - SPtr Map = new MMap(CacheF,0); - pkgCache Cache(Map); - if (_error->PendingError() == true || Map->Size() == 0) + std::unique_ptr Map(new MMap(CacheF,0)); + if (unlikely(Map->validData()) == false) + return false; + std::unique_ptr CacheP(new pkgCache(Map.get())); + pkgCache &Cache = *CacheP.get(); + if (_error->PendingError() || Map->Size() == 0) { if (Debug == true) - std::clog << "Errors are pending or Map is empty()" << std::endl; - _error->Discard(); + std::clog << "Errors are pending or Map is empty() for " << CacheFile << std::endl; return false; } - SPtrArray RlsVisited = new bool[Cache.HeaderP->ReleaseFileCount]; - memset(RlsVisited,0,sizeof(*RlsVisited)*Cache.HeaderP->ReleaseFileCount); + std::unique_ptr RlsVisited(new bool[Cache.HeaderP->ReleaseFileCount]); + memset(RlsVisited.get(),0,sizeof(RlsVisited[0])*Cache.HeaderP->ReleaseFileCount); std::vector Files; for (pkgSourceList::const_iterator i = List.begin(); i != List.end(); ++i) { @@ -1385,10 +1420,9 @@ static bool CheckValidity(const string &CacheFile, if (Debug == true) std::clog << "with ID " << RlsFile->ID << " is valid" << std::endl; - std::vector *Indexes = (*i)->GetIndexFiles(); - for (std::vector::const_iterator j = Indexes->begin(); j != Indexes->end(); ++j) - if ((*j)->HasPackages()) - Files.push_back (*j); + std::vector const * const Indexes = (*i)->GetIndexFiles(); + std::copy_if(Indexes->begin(), Indexes->end(), std::back_inserter(Files), + [](pkgIndexFile const * const I) { return I->HasPackages(); }); } for (unsigned I = 0; I != Cache.HeaderP->ReleaseFileCount; ++I) if (RlsVisited[I] == false) @@ -1398,13 +1432,12 @@ static bool CheckValidity(const string &CacheFile, return false; } - for (; Start != End; ++Start) - Files.push_back(*Start); + std::copy(Start, End, std::back_inserter(Files)); /* 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); + std::unique_ptr Visited(new bool[Cache.HeaderP->PackageFileCount]); + memset(Visited.get(),0,sizeof(Visited[0])*Cache.HeaderP->PackageFileCount); for (std::vector::const_reverse_iterator PkgFile = Files.rbegin(); PkgFile != Files.rend(); ++PkgFile) { if (Debug == true) @@ -1443,14 +1476,15 @@ static bool CheckValidity(const string &CacheFile, if (Debug == true) { std::clog << "Validity failed because of pending errors:" << std::endl; - _error->DumpErrors(); + _error->DumpErrors(std::clog, GlobalError::DEBUG, false); } - _error->Discard(); return false; } - + if (OutMap != 0) - *OutMap = Map.UnGuard(); + *OutMap = Map.release(); + if (OutCache != 0) + *OutCache = CacheP.release(); return true; } /*}}}*/ @@ -1482,16 +1516,36 @@ static map_filesize_t ComputeSize(pkgSourceList const * const List, FileIterator } /*}}}*/ // BuildCache - Merge the list of index files into the cache /*{{{*/ -// --------------------------------------------------------------------- -/* */ static bool BuildCache(pkgCacheGenerator &Gen, - OpProgress *Progress, + OpProgress * const Progress, map_filesize_t &CurrentSize,map_filesize_t TotalSize, pkgSourceList const * const List, - FileIterator Start, FileIterator End) + FileIterator const Start, FileIterator const End) { - std::vector Files; - bool const HasFileDeps = Gen.HasFileDeps(); + bool mergeFailure = false; + + auto const indexFileMerge = [&](pkgIndexFile * const I) { + if (I->HasPackages() == false || mergeFailure) + return; + + if (I->Exists() == false) + return; + + if (I->FindInCache(Gen.GetCache()).end() == false) + { + _error->Warning("Duplicate sources.list entry %s", + I->Describe().c_str()); + return; + } + + map_filesize_t const Size = I->Size(); + if (Progress != NULL) + Progress->OverallProgress(CurrentSize, TotalSize, Size, _("Reading package lists")); + CurrentSize += Size; + + if (I->Merge(Gen,Progress) == false) + mergeFailure = true; + }; if (List != NULL) { @@ -1508,86 +1562,33 @@ static bool BuildCache(pkgCacheGenerator &Gen, return false; std::vector *Indexes = (*i)->GetIndexFiles(); - for (std::vector::const_iterator I = Indexes->begin(); I != Indexes->end(); ++I) - { - if (HasFileDeps) - Files.push_back(*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 (Indexes != NULL) + std::for_each(Indexes->begin(), Indexes->end(), indexFileMerge); + if (mergeFailure) + return false; } } - Gen.SelectReleaseFile("", ""); - FileIterator I; - for (I = Start; I != End; ++I) + if (Start != End) { - if (HasFileDeps) - Files.push_back(*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) + Gen.SelectReleaseFile("", ""); + std::for_each(Start, End, indexFileMerge); + if (mergeFailure) return false; - } - - if (HasFileDeps == true) - { - if (Progress != NULL) - Progress->Done(); - TotalSize = ComputeSize(List, Start, End); - CurrentSize = 0; - for (std::vector::const_iterator I = Files.begin(); I != Files.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) { +// 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. */ +static DynamicMMap* CreateDynamicMMap(FileFd * const 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); @@ -1599,36 +1600,63 @@ DynamicMMap* pkgCacheGenerator::CreateDynamicMMap(FileFd *CacheF, unsigned long 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, +static bool writeBackMMapToFile(pkgCacheGenerator * const Gen, DynamicMMap * const Map, + std::string const &FileName) +{ + FileFd SCacheF(FileName, FileFd::WriteAtomic); + if (SCacheF.IsOpen() == false || SCacheF.Failed()) + 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")); + + // Write out the proper header + Gen->GetCache().HeaderP->Dirty = false; + Gen->GetCache().HeaderP->CacheFileSize = Gen->GetCache().CacheHash(); + 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; + return true; +} +static bool loadBackMMapFromFile(std::unique_ptr &Gen, + std::unique_ptr &Map, OpProgress * const Progress, std::string const &FileName) +{ + Map.reset(CreateDynamicMMap(NULL, 0)); + if (unlikely(Map->validData()) == false) + return false; + FileFd CacheF(FileName, FileFd::ReadOnly); + if (CacheF.IsOpen() == false || CacheF.Failed()) + return false; + _error->PushToStack(); + map_pointer_t const alloc = Map->RawAllocate(CacheF.Size()); + bool const newError = _error->PendingError(); + _error->MergeWithStack(); + if (alloc == 0 && newError) + return false; + if (CacheF.Read((unsigned char *)Map->Data() + alloc, CacheF.Size()) == false) + return false; + Gen.reset(new pkgCacheGenerator(Map.get(),Progress)); + return Gen->Start(); +} +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) + MMap **OutMap,bool) { + return pkgCacheGenerator::MakeStatusCache(List, Progress, OutMap, nullptr, true); +} +bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress, + MMap **OutMap,pkgCache **OutCache, bool) +{ + // FIXME: deprecate the ignored AllowMem parameter 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); - } -*/ if (_system->AddStatusFiles(Files) == false) return false; @@ -1649,167 +1677,135 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress 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) + bool pkgcache_fine = false; + bool srcpkgcache_fine = false; + bool volatile_fine = List.GetVolatileFiles().empty(); + + if (CheckValidity(CacheFile, List, Files.begin(), Files.end(), volatile_fine ? OutMap : NULL, + volatile_fine ? OutCache : NULL) == 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; + std::clog << "pkgcache.bin is valid - no need to build any cache" << std::endl; + pkgcache_fine = true; + srcpkgcache_fine = 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) + if (pkgcache_fine == 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 + if (CheckValidity(SrcCacheFile, List, Files.end(), Files.end()) == true) { - _error->MergeWithStack(); if (Debug == true) - std::clog << "Open filebased MMap" << std::endl; + std::clog << "srcpkgcache.bin is valid - it can be reused" << std::endl; + srcpkgcache_fine = true; } } - if (Writeable == false || CacheFile.empty() == true) + + if (volatile_fine == true && srcpkgcache_fine == true && pkgcache_fine == true) { - // Just build it in memory.. - Map = CreateDynamicMMap(NULL); - if (Debug == true) - std::clog << "Open memory Map (not filebased)" << std::endl; + if (Progress != NULL) + Progress->OverallProgress(1,1,1,_("Reading package lists")); + return true; } - - // Lets try the source cache. - map_filesize_t CurrentSize = 0; - map_filesize_t TotalSize = 0; - if (CheckValidity(SrcCacheFile, List, Files.end(), - Files.end()) == true) + + bool Writeable = false; + if (srcpkgcache_fine == false || pkgcache_fine == 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 << "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; + std::clog << "Do we have write-access to the cache files? " << (Writeable ? "YES" : "NO") << std::endl; + } - TotalSize = ComputeSize(NULL, Files.begin(), Files.end()); + // At this point we know we need to construct something, so get storage ready + std::unique_ptr Map(CreateDynamicMMap(NULL, 0)); + if (unlikely(Map->validData()) == false) + return false; + if (Debug == true) + std::clog << "Open memory Map (not filebased)" << std::endl; - // Build the status cache - pkgCacheGenerator Gen(Map.Get(),Progress); - if (_error->PendingError() == true) - return false; - if (BuildCache(Gen, Progress, CurrentSize, TotalSize, NULL, - Files.begin(),Files.end()) == false) + std::unique_ptr Gen{nullptr}; + map_filesize_t CurrentSize = 0; + std::vector VolatileFiles = List.GetVolatileFiles(); + map_filesize_t TotalSize = ComputeSize(NULL, VolatileFiles.begin(), VolatileFiles.end()); + if (srcpkgcache_fine == true && pkgcache_fine == false) + { + if (Debug == true) + std::clog << "srcpkgcache.bin was valid - populate MMap with it" << std::endl; + if (loadBackMMapFromFile(Gen, Map, Progress, SrcCacheFile) == false) return false; + srcpkgcache_fine = true; + TotalSize += ComputeSize(NULL, Files.begin(), Files.end()); } - else + else if (srcpkgcache_fine == false) { if (Debug == true) std::clog << "srcpkgcache.bin is NOT valid - rebuild" << std::endl; - TotalSize = ComputeSize(&List, Files.begin(),Files.end()); - - // Build the source cache - pkgCacheGenerator Gen(Map.Get(),Progress); - if (_error->PendingError() == true) + Gen.reset(new pkgCacheGenerator(Map.get(),Progress)); + if (Gen->Start() == false) return false; - if (BuildCache(Gen, Progress, CurrentSize, TotalSize, &List, - Files.end(),Files.end()) == false) + + TotalSize += ComputeSize(&List, Files.begin(),Files.end()); + if (BuildCache(*Gen, Progress, CurrentSize, TotalSize, &List, + Files.end(),Files.end()) == false) return false; - - // Write it back + if (Writeable == true && SrcCacheFile.empty() == false) - { - FileFd SCacheF(SrcCacheFile,FileFd::WriteAtomic); - if (_error->PendingError() == true) + if (writeBackMMapToFile(Gen.get(), Map.get(), SrcCacheFile) == false) 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, NULL, - Files.begin(), Files.end()) == false) + } + + if (pkgcache_fine == false) + { + if (Debug == true) + std::clog << "Building status cache in pkgcache.bin now" << std::endl; + if (BuildCache(*Gen, Progress, CurrentSize, TotalSize, NULL, + Files.begin(), Files.end()) == false) return false; + + if (Writeable == true && CacheFile.empty() == false) + if (writeBackMMapToFile(Gen.get(), Map.get(), CacheFile) == false) + return false; } + if (Debug == true) - std::clog << "Caches are ready for shipping" << std::endl; + std::clog << "Caches done. " << (volatile_fine ? "No volatile files, so we are done here." : "Now bring in the volatile files") << std::endl; - if (_error->PendingError() == true) - return false; - if (OutMap != 0) + if (volatile_fine == false) { - if (CacheF != 0) + if (Gen == nullptr) { - delete Map.UnGuard(); - *OutMap = new MMap(*CacheF,0); + if (Debug == true) + std::clog << "Populate new MMap with cachefile contents" << std::endl; + if (loadBackMMapFromFile(Gen, Map, Progress, CacheFile) == false) + return false; } - else - { - *OutMap = Map.UnGuard(); - } + + Files = List.GetVolatileFiles(); + if (BuildCache(*Gen, Progress, CurrentSize, TotalSize, NULL, + Files.begin(), Files.end()) == false) + return false; } - + + if (OutMap != nullptr) + *OutMap = Map.release(); + + if (Debug == true) + std::clog << "Everything is ready for shipping" << std::endl; return true; } /*}}}*/ // CacheGenerator::MakeOnlyStatusCache - Build only a status files cache/*{{{*/ -// --------------------------------------------------------------------- -/* */ -APT_DEPRECATED bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap) +class APT_HIDDEN ScopedErrorMerge { +public: + ScopedErrorMerge() { _error->PushToStack(); } + ~ScopedErrorMerge() { _error->MergeWithStack(); } +}; +bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap) { return pkgCacheGenerator::MakeOnlyStatusCache(&Progress, OutMap); } bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **OutMap) { @@ -1817,17 +1813,19 @@ bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **O if (_system->AddStatusFiles(Files) == false) return false; - SPtr Map = CreateDynamicMMap(NULL); + ScopedErrorMerge sem; + std::unique_ptr Map(CreateDynamicMMap(NULL, 0)); + if (unlikely(Map->validData()) == false) + return false; map_filesize_t CurrentSize = 0; map_filesize_t TotalSize = 0; - TotalSize = ComputeSize(NULL, Files.begin(), 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) + pkgCacheGenerator Gen(Map.get(),Progress); + if (Gen.Start() == false || _error->PendingError() == true) return false; if (BuildCache(Gen,Progress,CurrentSize,TotalSize, NULL, Files.begin(), Files.end()) == false) @@ -1835,7 +1833,7 @@ bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **O if (_error->PendingError() == true) return false; - *OutMap = Map.UnGuard(); + *OutMap = Map.release(); return true; } @@ -1853,12 +1851,6 @@ static bool IsDuplicateDescription(pkgCache::DescIterator Desc, return false; } /*}}}*/ -// CacheGenerator::FinishCache /*{{{*/ -bool pkgCacheGenerator::FinishCache(OpProgress * /*Progress*/) -{ - return true; -} - /*}}}*/ -pkgCacheGenerator::ListParser::ListParser() : Owner(NULL), OldDepLast(NULL), FoundFileDeps(false), d(NULL) {} -pkgCacheGenerator::ListParser::~ListParser() {} +pkgCacheListParser::pkgCacheListParser() : Owner(NULL), OldDepLast(NULL), d(NULL) {} +pkgCacheListParser::~pkgCacheListParser() {}