X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/45df0ad2aab7d019cec855ba2cfe7ecdd0f8c7c8..f92800f801341091b25af96c34927529f36ad65a:/apt-pkg/pkgcache.cc diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc index 997ff51fe..616d400a2 100644 --- a/apt-pkg/pkgcache.cc +++ b/apt-pkg/pkgcache.cc @@ -27,6 +27,7 @@ #include #include #include +#include #include @@ -35,7 +36,6 @@ #include #include -#include /*}}}*/ using std::string; @@ -55,6 +55,7 @@ pkgCache::Header::Header() Dirty = false; HeaderSz = sizeof(pkgCache::Header); + GroupSz = sizeof(pkgCache::Group); PackageSz = sizeof(pkgCache::Package); PackageFileSz = sizeof(pkgCache::PackageFile); VersionSz = sizeof(pkgCache::Version); @@ -64,6 +65,7 @@ pkgCache::Header::Header() VerFileSz = sizeof(pkgCache::VerFile); DescFileSz = sizeof(pkgCache::DescFile); + GroupCount = 0; PackageCount = 0; VersionCount = 0; DescriptionCount = 0; @@ -79,7 +81,8 @@ pkgCache::Header::Header() StringList = 0; VerSysName = 0; Architecture = 0; - memset(HashTable,0,sizeof(HashTable)); + memset(PkgHashTable,0,sizeof(PkgHashTable)); + memset(GrpHashTable,0,sizeof(GrpHashTable)); memset(Pools,0,sizeof(Pools)); } /*}}}*/ @@ -89,6 +92,7 @@ pkgCache::Header::Header() bool pkgCache::Header::CheckSizes(Header &Against) const { if (HeaderSz == Against.HeaderSz && + GroupSz == Against.GroupSz && PackageSz == Against.PackageSz && PackageFileSz == Against.PackageFileSz && VersionSz == Against.VersionSz && @@ -107,6 +111,10 @@ bool pkgCache::Header::CheckSizes(Header &Against) const /* */ pkgCache::pkgCache(MMap *Map, bool DoMap) : Map(*Map) { + // call getArchitectures() with cached=false to ensure that the + // architectures cache is re-evaulated. this is needed in cases + // when the APT::Architecture field changes between two cache creations + MultiArchEnabled = APT::Configuration::getArchitectures(false).size() > 1; if (DoMap == true) ReMap(); } @@ -114,10 +122,11 @@ pkgCache::pkgCache(MMap *Map, bool DoMap) : Map(*Map) // Cache::ReMap - Reopen the cache file /*{{{*/ // --------------------------------------------------------------------- /* If the file is already closed then this will open it open it. */ -bool pkgCache::ReMap() +bool pkgCache::ReMap(bool const &Errorchecks) { // Apply the typecasts. HeaderP = (Header *)Map.Data(); + GrpP = (Group *)Map.Data(); PkgP = (Package *)Map.Data(); VerFileP = (VerFile *)Map.Data(); DescFileP = (DescFile *)Map.Data(); @@ -129,6 +138,9 @@ bool pkgCache::ReMap() StringItemP = (StringItem *)Map.Data(); StrP = (char *)Map.Data(); + if (Errorchecks == false) + return true; + if (Map.Size() == 0 || HeaderP == 0) return _error->Error(_("Empty package cache")); @@ -165,7 +177,7 @@ unsigned long pkgCache::sHash(const string &Str) const unsigned long Hash = 0; for (string::const_iterator I = Str.begin(); I != Str.end(); I++) Hash = 5*Hash + tolower_ascii(*I); - return Hash % _count(HeaderP->HashTable); + return Hash % _count(HeaderP->PkgHashTable); } unsigned long pkgCache::sHash(const char *Str) const @@ -173,26 +185,82 @@ unsigned long pkgCache::sHash(const char *Str) const unsigned long Hash = 0; for (const char *I = Str; *I != 0; I++) Hash = 5*Hash + tolower_ascii(*I); - return Hash % _count(HeaderP->HashTable); + return Hash % _count(HeaderP->PkgHashTable); } /*}}}*/ -// Cache::FindPkg - Locate a package by name /*{{{*/ +// Cache::SingleArchFindPkg - Locate a package by name /*{{{*/ // --------------------------------------------------------------------- -/* Returns 0 on error, pointer to the package otherwise */ -pkgCache::PkgIterator pkgCache::FindPkg(const string &Name) +/* Returns 0 on error, pointer to the package otherwise + The multiArch enabled methods will fallback to this one as it is (a bit) + faster for single arch environments and realworld is mostly singlearch… */ +pkgCache::PkgIterator pkgCache::SingleArchFindPkg(const string &Name) { // Look at the hash bucket - Package *Pkg = PkgP + HeaderP->HashTable[Hash(Name)]; + Package *Pkg = PkgP + HeaderP->PkgHashTable[Hash(Name)]; for (; Pkg != PkgP; Pkg = PkgP + Pkg->NextPackage) { if (Pkg->Name != 0 && StrP[Pkg->Name] == Name[0] && - stringcasecmp(Name,StrP + Pkg->Name) == 0) - return PkgIterator(*this,Pkg); + stringcasecmp(Name,StrP + Pkg->Name) == 0) + return PkgIterator(*this,Pkg); } return PkgIterator(*this,0); } /*}}}*/ +// Cache::FindPkg - Locate a package by name /*{{{*/ +// --------------------------------------------------------------------- +/* Returns 0 on error, pointer to the package otherwise */ +pkgCache::PkgIterator pkgCache::FindPkg(const string &Name) { + if (MultiArchCache() == false) + return SingleArchFindPkg(Name); + size_t const found = Name.find(':'); + if (found == string::npos) + return FindPkg(Name, "native"); + string const Arch = Name.substr(found+1); + if (Arch == "any") + return FindPkg(Name, "any"); + return FindPkg(Name.substr(0, found), Arch); +} + /*}}}*/ +// Cache::FindPkg - Locate a package by name /*{{{*/ +// --------------------------------------------------------------------- +/* Returns 0 on error, pointer to the package otherwise */ +pkgCache::PkgIterator pkgCache::FindPkg(const string &Name, string const &Arch) { + if (MultiArchCache() == false) { + if (Arch == "native" || Arch == "all" || Arch == "any" || + Arch == _config->Find("APT::Architecture")) + return SingleArchFindPkg(Name); + else + return PkgIterator(*this,0); + } + /* We make a detour via the GrpIterator here as + on a multi-arch environment a group is easier to + find than a package (less entries in the buckets) */ + pkgCache::GrpIterator Grp = FindGrp(Name); + if (Grp.end() == true) + return PkgIterator(*this,0); + + return Grp.FindPkg(Arch); +} + /*}}}*/ +// Cache::FindGrp - Locate a group by name /*{{{*/ +// --------------------------------------------------------------------- +/* Returns End-Pointer on error, pointer to the group otherwise */ +pkgCache::GrpIterator pkgCache::FindGrp(const string &Name) { + if (unlikely(Name.empty() == true)) + return GrpIterator(*this,0); + + // Look at the hash bucket for the group + Group *Grp = GrpP + HeaderP->GrpHashTable[sHash(Name)]; + for (; Grp != GrpP; Grp = GrpP + Grp->Next) { + if (Grp->Name != 0 && StrP[Grp->Name] == Name[0] && + stringcasecmp(Name, StrP + Grp->Name) == 0) + return GrpIterator(*this, Grp); + } + + return GrpIterator(*this,0); +} + /*}}}*/ // Cache::CompTypeDeb - Return a string describing the compare type /*{{{*/ // --------------------------------------------------------------------- /* This returns a string representation of the dependency compare @@ -242,11 +310,98 @@ const char *pkgCache::Priority(unsigned char Prio) return 0; } /*}}}*/ -// Bases for iterator classes /*{{{*/ -void pkgCache::VerIterator::_dummy() {} -void pkgCache::DepIterator::_dummy() {} -void pkgCache::PrvIterator::_dummy() {} -void pkgCache::DescIterator::_dummy() {} +// GrpIterator::FindPkg - Locate a package by arch /*{{{*/ +// --------------------------------------------------------------------- +/* Returns an End-Pointer on error, pointer to the package otherwise */ +pkgCache::PkgIterator pkgCache::GrpIterator::FindPkg(string Arch) const { + if (unlikely(IsGood() == false || S->FirstPackage == 0)) + return PkgIterator(*Owner, 0); + + static string const myArch = _config->Find("APT::Architecture"); + /* Most of the time the package for our native architecture is + the one we add at first to the cache, but this would be the + last one we check, so we do it now. */ + if (Arch == "native" || Arch == myArch) { + Arch = myArch; + pkgCache::Package *Pkg = Owner->PkgP + S->LastPackage; + if (stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0) + return PkgIterator(*Owner, Pkg); + } + + /* If we accept any package we simply return the "first" + package in this group (the last one added). */ + if (Arch == "any") + return PkgIterator(*Owner, Owner->PkgP + S->FirstPackage); + + /* Iterate over the list to find the matching arch + unfortunately this list includes "package noise" + (= different packages with same calculated hash), + so we need to check the name also */ + for (pkgCache::Package *Pkg = PackageList(); Pkg != Owner->PkgP; + Pkg = Owner->PkgP + Pkg->NextPackage) { + if (S->Name == Pkg->Name && + stringcasecmp(Arch, Owner->StrP + Pkg->Arch) == 0) + return PkgIterator(*Owner, Pkg); + if ((Owner->PkgP + S->LastPackage) == Pkg) + break; + } + + return PkgIterator(*Owner, 0); +} + /*}}}*/ +// GrpIterator::FindPreferredPkg - Locate the "best" package /*{{{*/ +// --------------------------------------------------------------------- +/* Returns an End-Pointer on error, pointer to the package otherwise */ +pkgCache::PkgIterator pkgCache::GrpIterator::FindPreferredPkg(bool const &PreferNonVirtual) const { + pkgCache::PkgIterator Pkg = FindPkg("native"); + if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0)) + return Pkg; + + std::vector const archs = APT::Configuration::getArchitectures(); + for (std::vector::const_iterator a = archs.begin(); + a != archs.end(); ++a) { + Pkg = FindPkg(*a); + if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0)) + return Pkg; + } + + if (PreferNonVirtual == true) + return FindPreferredPkg(false); + return PkgIterator(*Owner, 0); +} + /*}}}*/ +// GrpIterator::NextPkg - Locate the next package in the group /*{{{*/ +// --------------------------------------------------------------------- +/* Returns an End-Pointer on error, pointer to the package otherwise. + We can't simply ++ to the next as the next package of the last will + be from a different group (with the same hash value) */ +pkgCache::PkgIterator pkgCache::GrpIterator::NextPkg(pkgCache::PkgIterator const &LastPkg) const { + if (unlikely(IsGood() == false || S->FirstPackage == 0 || + LastPkg.end() == true)) + return PkgIterator(*Owner, 0); + + if (S->LastPackage == LastPkg.Index()) + return PkgIterator(*Owner, 0); + + return PkgIterator(*Owner, Owner->PkgP + LastPkg->NextPackage); +} + /*}}}*/ +// GrpIterator::operator ++ - Postfix incr /*{{{*/ +// --------------------------------------------------------------------- +/* This will advance to the next logical group in the hash table. */ +void pkgCache::GrpIterator::operator ++(int) +{ + // Follow the current links + if (S != Owner->GrpP) + S = Owner->GrpP + S->Next; + + // Follow the hash table + while (S == Owner->GrpP && (HashIndex+1) < (signed)_count(Owner->HeaderP->GrpHashTable)) + { + HashIndex++; + S = Owner->GrpP + Owner->HeaderP->GrpHashTable[HashIndex]; + } +}; /*}}}*/ // PkgIterator::operator ++ - Postfix incr /*{{{*/ // --------------------------------------------------------------------- @@ -254,14 +409,14 @@ void pkgCache::DescIterator::_dummy() {} void pkgCache::PkgIterator::operator ++(int) { // Follow the current links - if (Pkg != Owner->PkgP) - Pkg = Owner->PkgP + Pkg->NextPackage; + if (S != Owner->PkgP) + S = Owner->PkgP + S->NextPackage; // Follow the hash table - while (Pkg == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->HashTable)) + while (S == Owner->PkgP && (HashIndex+1) < (signed)_count(Owner->HeaderP->PkgHashTable)) { HashIndex++; - Pkg = Owner->PkgP + Owner->HeaderP->HashTable[HashIndex]; + S = Owner->PkgP + Owner->HeaderP->PkgHashTable[HashIndex]; } }; /*}}}*/ @@ -270,12 +425,12 @@ void pkgCache::PkgIterator::operator ++(int) /* By this we mean if it is either cleanly installed or cleanly removed. */ pkgCache::PkgIterator::OkState pkgCache::PkgIterator::State() const { - if (Pkg->InstState == pkgCache::State::ReInstReq || - Pkg->InstState == pkgCache::State::HoldReInstReq) + if (S->InstState == pkgCache::State::ReInstReq || + S->InstState == pkgCache::State::HoldReInstReq) return NeedsUnpack; - if (Pkg->CurrentState == pkgCache::State::UnPacked || - Pkg->CurrentState == pkgCache::State::HalfConfigured) + if (S->CurrentState == pkgCache::State::UnPacked || + S->CurrentState == pkgCache::State::HalfConfigured) // we leave triggers alone complettely. dpkg deals with // them in a hard-to-predict manner and if they get // resolved by dpkg before apt run dpkg --configure on @@ -284,8 +439,8 @@ pkgCache::PkgIterator::OkState pkgCache::PkgIterator::State() const //Pkg->CurrentState == pkgCache::State::TriggersPending) return NeedsConfigure; - if (Pkg->CurrentState == pkgCache::State::HalfInstalled || - Pkg->InstState != pkgCache::State::Ok) + if (S->CurrentState == pkgCache::State::HalfInstalled || + S->InstState != pkgCache::State::Ok) return NeedsUnpack; return NeedsNothing; @@ -298,7 +453,7 @@ const char * pkgCache::PkgIterator::CandVersion() const { //TargetVer is empty, so don't use it. - VerIterator version = pkgPolicy::pkgPolicy(Owner).GetCandidateVer(*this); + VerIterator version = pkgPolicy(Owner).GetCandidateVer(*this); if (version.IsGood()) return version.VerStr(); return 0; @@ -332,7 +487,7 @@ operator<<(ostream& out, pkgCache::PkgIterator Pkg) string candidate = string(Pkg.CandVersion() == 0 ? "none" : Pkg.CandVersion()); string newest = string(Pkg.VersionList().end() ? "none" : Pkg.VersionList().VerStr()); - out << Pkg.Name() << " < " << current; + out << Pkg.Name() << " [ " << Pkg.Arch() << " ] < " << current; if (current != candidate) out << " -> " << candidate; if ( newest != "none" && candidate != newest) @@ -341,17 +496,29 @@ operator<<(ostream& out, pkgCache::PkgIterator Pkg) return out; } /*}}}*/ +// PkgIterator::FullName - Returns Name and (maybe) Architecture /*{{{*/ +// --------------------------------------------------------------------- +/* Returns a name:arch string */ +std::string pkgCache::PkgIterator::FullName(bool const &Pretty) const +{ + string fullname = Name(); + if (Pretty == false || + (strcmp(Arch(), "all") != 0 && _config->Find("APT::Architecture") != Arch())) + return fullname.append(":").append(Arch()); + return fullname; +} + /*}}}*/ // DepIterator::IsCritical - Returns true if the dep is important /*{{{*/ // --------------------------------------------------------------------- /* Currently critical deps are defined as depends, predepends and conflicts (including dpkg's Breaks fields). */ -bool pkgCache::DepIterator::IsCritical() +bool pkgCache::DepIterator::IsCritical() const { - if (Dep->Type == pkgCache::Dep::Conflicts || - Dep->Type == pkgCache::Dep::DpkgBreaks || - Dep->Type == pkgCache::Dep::Obsoletes || - Dep->Type == pkgCache::Dep::Depends || - Dep->Type == pkgCache::Dep::PreDepends) + if (S->Type == pkgCache::Dep::Conflicts || + S->Type == pkgCache::Dep::DpkgBreaks || + S->Type == pkgCache::Dep::Obsoletes || + S->Type == pkgCache::Dep::Depends || + S->Type == pkgCache::Dep::PreDepends) return true; return false; } @@ -369,7 +536,7 @@ bool pkgCache::DepIterator::IsCritical() In Conjunction with the DepCache the value of Result may not be super-good since the policy may have made it uninstallable. Using AllTargets is better in this case. */ -bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) +bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) const { Result = TargetPkg(); @@ -418,7 +585,7 @@ bool pkgCache::DepIterator::SmartTargetPkg(PkgIterator &Result) provides. It includes every possible package-version that could satisfy the dependency. The last item in the list has a 0. The resulting pointer must be delete [] 'd */ -pkgCache::Version **pkgCache::DepIterator::AllTargets() +pkgCache::Version **pkgCache::DepIterator::AllTargets() const { Version **Res = 0; unsigned long Size =0; @@ -430,12 +597,12 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() // Walk along the actual package providing versions for (VerIterator I = DPkg.VersionList(); I.end() == false; I++) { - if (Owner->VS->CheckDep(I.VerStr(),Dep->CompareOp,TargetVer()) == false) + if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false) continue; - if ((Dep->Type == pkgCache::Dep::Conflicts || - Dep->Type == pkgCache::Dep::DpkgBreaks || - Dep->Type == pkgCache::Dep::Obsoletes) && + if ((S->Type == pkgCache::Dep::Conflicts || + S->Type == pkgCache::Dep::DpkgBreaks || + S->Type == pkgCache::Dep::Obsoletes) && ParentPkg() == I.ParentPkg()) continue; @@ -447,12 +614,12 @@ pkgCache::Version **pkgCache::DepIterator::AllTargets() // Follow all provides for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; I++) { - if (Owner->VS->CheckDep(I.ProvideVersion(),Dep->CompareOp,TargetVer()) == false) + if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false) continue; - if ((Dep->Type == pkgCache::Dep::Conflicts || - Dep->Type == pkgCache::Dep::DpkgBreaks || - Dep->Type == pkgCache::Dep::Obsoletes) && + if ((S->Type == pkgCache::Dep::Conflicts || + S->Type == pkgCache::Dep::DpkgBreaks || + S->Type == pkgCache::Dep::Obsoletes) && ParentPkg() == I.OwnerPkg()) continue; @@ -490,13 +657,37 @@ void pkgCache::DepIterator::GlobOr(DepIterator &Start,DepIterator &End) End = *this; for (bool LastOR = true; end() == false && LastOR == true;) { - LastOR = (Dep->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or; + LastOR = (S->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or; (*this)++; if (LastOR == true) End = (*this); } } /*}}}*/ +// ostream operator to handle string representation of a dependecy /*{{{*/ +// --------------------------------------------------------------------- +/* */ +std::ostream& operator<<(ostream& out, pkgCache::DepIterator D) +{ + if (D.end() == true) + return out << "invalid dependency"; + + pkgCache::PkgIterator P = D.ParentPkg(); + pkgCache::PkgIterator T = D.TargetPkg(); + + out << (P.end() ? "invalid pkg" : P.FullName(false)) << " " << D.DepType() + << " on "; + if (T.end() == true) + out << "invalid pkg"; + else + out << T; + + if (D->Version != 0) + out << " (" << D.CompType() << " " << D.TargetVer() << ")"; + + return out; +} + /*}}}*/ // VerIterator::CompareVer - Fast version compare for same pkgs /*{{{*/ // --------------------------------------------------------------------- /* This just looks over the version list to see if B is listed before A. In @@ -540,11 +731,29 @@ bool pkgCache::VerIterator::Automatic() const { VerFileIterator Files = FileList(); for (; Files.end() == false; Files++) + // Do not check ButAutomaticUpgrades here as it is kind of automatic… if ((Files.File()->Flags & pkgCache::Flag::NotAutomatic) != pkgCache::Flag::NotAutomatic) return true; return false; } /*}}}*/ +// VerIterator::Pseudo - Check if this version is a pseudo one /*{{{*/ +// --------------------------------------------------------------------- +/* Sometimes you have the need to express dependencies with versions + which doesn't really exist or exist multiply times for "different" + packages. We need these versions for dependency resolution but they + are a problem everytime we need to download/install something. */ +bool pkgCache::VerIterator::Pseudo() const +{ + if (S->MultiArch == pkgCache::Version::All && + strcmp(Arch(true),"all") != 0) + { + GrpIterator const Grp = ParentPkg().Group(); + return (Grp->LastPackage != Grp->FirstPackage); + } + return false; +} + /*}}}*/ // VerIterator::NewestFile - Return the newest file version relation /*{{{*/ // --------------------------------------------------------------------- /* This looks at the version numbers associated with all of the sources @@ -566,7 +775,7 @@ pkgCache::VerFileIterator pkgCache::VerIterator::NewestFile() const // --------------------------------------------------------------------- /* This describes the version from a release-centric manner. The output is a list of Label:Version/Archive */ -string pkgCache::VerIterator::RelStr() +string pkgCache::VerIterator::RelStr() const { bool First = true; string Res; @@ -625,7 +834,9 @@ string pkgCache::VerIterator::RelStr() else Res += File.Site(); } - } + } + if (S->ParentPkg != 0) + Res.append(" [").append(Arch()).append("]"); return Res; } /*}}}*/ @@ -640,7 +851,7 @@ bool pkgCache::PkgFileIterator::IsOk() if (stat(FileName(),&Buf) != 0) return false; - if (Buf.st_size != (signed)File->Size || Buf.st_mtime != File->mtime) + if (Buf.st_size != (signed)S->Size || Buf.st_mtime != S->mtime) return false; return true; @@ -664,6 +875,8 @@ string pkgCache::PkgFileIterator::RelStr() Res = Res + (Res.empty() == true?"l=":",l=") + Label(); if (Component() != 0) Res = Res + (Res.empty() == true?"c=":",c=") + Component(); + if (Architecture() != 0) + Res = Res + (Res.empty() == true?"b=":",b=") + Architecture(); return Res; } /*}}}*/ @@ -678,17 +891,19 @@ pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const for (std::vector::const_iterator l = lang.begin(); l != lang.end(); l++) { - pkgCache::DescIterator DescDefault = DescriptionList(); - pkgCache::DescIterator Desc = DescDefault; - - for (; Desc.end() == false; Desc++) - if (*l == Desc.LanguageCode()) + pkgCache::DescIterator Desc = DescriptionList(); + for (; Desc.end() == false; ++Desc) + if (*l == Desc.LanguageCode() || + (*l == "en" && strcmp(Desc.LanguageCode(),"") == 0)) break; - if (Desc.end() == true) - Desc = DescDefault; + if (Desc.end() == true) + continue; return Desc; } - + for (pkgCache::DescIterator Desc = DescriptionList(); + Desc.end() == false; ++Desc) + if (strcmp(Desc.LanguageCode(), "") == 0) + return Desc; return DescriptionList(); };