X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/53391d0fc55f118194467b3d436f91fbc1097c31..3c54407f8783d5e27363eabf41dbc3d031526ffe:/apt-pkg/policy.cc diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc index b9a951990..5427271b6 100644 --- a/apt-pkg/policy.cc +++ b/apt-pkg/policy.cc @@ -16,7 +16,7 @@ 990 = Config file override package files 989 = Start for preference auto-priorities 500 = Default package files - 100 = The status file + 100 = The status file and ButAutomaticUpgrades sources 0 -> 100 = NotAutomatic sources like experimental -inf -> 0 = Never selected @@ -27,14 +27,12 @@ #include #include #include +#include #include #include - + #include -#include -#include -#include #include #include /*}}}*/ @@ -47,6 +45,8 @@ using namespace std; file matches the V0 policy engine. */ pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner) { + if (Owner == 0 || &(Owner->Head()) == 0) + return; PFPriority = new signed short[Owner->Head().PackageFileCount]; Pins = new Pin[Owner->Head().PackageCount]; @@ -72,9 +72,10 @@ bool pkgPolicy::InitDefaults() PFPriority[I->ID] = 500; if ((I->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource) PFPriority[I->ID] = 100; - else - if ((I->Flags & pkgCache::Flag::NotAutomatic) == pkgCache::Flag::NotAutomatic) - PFPriority[I->ID] = 1; + else if ((I->Flags & pkgCache::Flag::ButAutomaticUpgrades) == pkgCache::Flag::ButAutomaticUpgrades) + PFPriority[I->ID] = 100; + else if ((I->Flags & pkgCache::Flag::NotAutomatic) == pkgCache::Flag::NotAutomatic) + PFPriority[I->ID] = 1; } // Apply the defaults.. @@ -108,7 +109,7 @@ bool pkgPolicy::InitDefaults() if (_config->FindB("Debug::pkgPolicy",false) == true) for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++) - cout << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << endl; + std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl; return true; } @@ -117,12 +118,24 @@ bool pkgPolicy::InitDefaults() // --------------------------------------------------------------------- /* Evaluate the package pins and the default list to deteremine what the best package is. */ -pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) +pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator const &Pkg) { // Look for a package pin and evaluate it. signed Max = GetPriority(Pkg); pkgCache::VerIterator Pref = GetMatch(Pkg); + // Alternatives in case we can not find our package pin (Bug#512318). + signed MaxAlt = 0; + pkgCache::VerIterator PrefAlt; + + // no package = no candidate version + if (Pkg.end() == true) + return Pref; + + // packages with a pin lower than 0 have no newer candidate than the current version + if (Max < 0) + return Pkg.CurrentVer(); + /* Falling through to the default version.. Setting Max to zero effectively excludes everything <= 0 which are the non-automatic priorities.. The status file is given a prio of 100 which will exclude @@ -137,6 +150,16 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) */ for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++) { + /* Lets see if this version is the installed version */ + bool instVer = (Pkg.CurrentVer() == Ver); + if (Ver.Pseudo() == true && instVer == false) + { + pkgCache::PkgIterator const allPkg = Ver.ParentPkg().Group().FindPkg("all"); + if (allPkg->CurrentVer != 0 && allPkg.CurrentVer()->Hash == Ver->Hash && + strcmp(allPkg.CurVersion(), Ver.VerStr()) == 0) + instVer = true; + } + for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; VF++) { /* If this is the status file, and the current version is not the @@ -145,18 +168,23 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) out bogus entries that may be due to config-file states, or other. */ if ((VF.File()->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource && - Pkg.CurrentVer() != Ver) + instVer == false) continue; - + signed Prio = PFPriority[VF.File()->ID]; if (Prio > Max) { Pref = Ver; Max = Prio; + } + if (Prio > MaxAlt) + { + PrefAlt = Ver; + MaxAlt = Prio; } } - if (Pkg.CurrentVer() == Ver && Max < 1000) + if (instVer == true && Max < 1000) { /* Elevate our current selection (or the status file itself) to the Pseudo-status priority. */ @@ -169,6 +197,12 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) break; } } + // If we do not find our candidate, use the one with the highest pin. + // This means that if there is a version available with pin > 0; there + // will always be a candidate (Closes: #512318) + if (!Pref.IsGood() && MaxAlt > 0) + Pref = PrefAlt; + return Pref; } /*}}}*/ @@ -181,49 +215,51 @@ pkgCache::VerIterator pkgPolicy::GetCandidateVer(pkgCache::PkgIterator Pkg) void pkgPolicy::CreatePin(pkgVersionMatch::MatchType Type,string Name, string Data,signed short Priority) { - Pin *P = 0; - if (Name.empty() == true) - P = &*Defaults.insert(Defaults.end(),PkgPin()); - else { - // Get a spot to put the pin - pkgCache::PkgIterator Pkg = Cache->FindPkg(Name); - if (Pkg.end() == true) + Pin *P = &*Defaults.insert(Defaults.end(),PkgPin()); + P->Type = Type; + P->Priority = Priority; + P->Data = Data; + return; + } + + // Get a spot to put the pin + pkgCache::GrpIterator Grp = Cache->FindGrp(Name); + for (pkgCache::PkgIterator Pkg = Grp.FindPkg("any"); + Pkg.end() != true; Pkg = Grp.NextPkg(Pkg)) + { + Pin *P = 0; + if (Pkg.end() == false) + P = Pins + Pkg->ID; + else { // Check the unmatched table - for (vector::iterator I = Unmatched.begin(); + for (vector::iterator I = Unmatched.begin(); I != Unmatched.end() && P == 0; I++) if (I->Pkg == Name) P = &*I; - + if (P == 0) - P = &*Unmatched.insert(Unmatched.end(),PkgPin()); + P = &*Unmatched.insert(Unmatched.end(),PkgPin()); } - else - { - P = Pins + Pkg->ID; - } + P->Type = Type; + P->Priority = Priority; + P->Data = Data; } - - // Set.. - P->Type = Type; - P->Priority = Priority; - P->Data = Data; } /*}}}*/ // Policy::GetMatch - Get the matching version for a package pin /*{{{*/ // --------------------------------------------------------------------- /* */ -pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator Pkg) +pkgCache::VerIterator pkgPolicy::GetMatch(pkgCache::PkgIterator const &Pkg) { const Pin &PPkg = Pins[Pkg->ID]; - if (PPkg.Type != pkgVersionMatch::None) - { - pkgVersionMatch Match(PPkg.Data,PPkg.Type); - return Match.Find(Pkg); - } - return pkgCache::VerIterator(*Pkg.Cache()); + if (PPkg.Type == pkgVersionMatch::None) + return pkgCache::VerIterator(*Pkg.Cache()); + + pkgVersionMatch Match(PPkg.Data,PPkg.Type); + return Match.Find(Pkg); } /*}}}*/ // Policy::GetPriority - Get the priority of the package pin /*{{{*/ @@ -256,43 +292,25 @@ class PreferenceSection : public pkgTagSection Stop = (const char*) memchr(Stop,'\n',End-Stop); } }; - - + /*}}}*/ +// ReadPinDir - Load the pin files from this dir into a Policy /*{{{*/ +// --------------------------------------------------------------------- +/* This will load each pin file in the given dir into a Policy. If the + given dir is empty the dir set in Dir::Etc::PreferencesParts is used. + Note also that this method will issue a warning if the dir does not + exists but it will return true in this case! */ bool ReadPinDir(pkgPolicy &Plcy,string Dir) { if (Dir.empty() == true) Dir = _config->FindDir("Dir::Etc::PreferencesParts"); - DIR *D = opendir(Dir.c_str()); - if (D == 0) - return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str()); - - vector List; - - for (struct dirent *Ent = readdir(D); Ent != 0; Ent = readdir(D)) + if (DirectoryExists(Dir) == false) { - if (Ent->d_name[0] == '.') - continue; - - // Skip bad file names ala run-parts - const char *C = Ent->d_name; - for (; *C != 0; C++) - if (isalpha(*C) == 0 && isdigit(*C) == 0 && *C != '_' && *C != '-') - break; - if (*C != 0) - continue; - - // Make sure it is a file and not something else - string File = flCombine(Dir,Ent->d_name); - struct stat St; - if (stat(File.c_str(),&St) != 0 || S_ISREG(St.st_mode) == 0) - continue; - - List.push_back(File); - } - closedir(D); - - sort(List.begin(),List.end()); + _error->WarningE("DirectoryExists",_("Unable to read %s"),Dir.c_str()); + return true; + } + + vector const List = GetListOfFilesInDir(Dir, "pref", true, true); // Read the files for (vector::const_iterator I = List.begin(); I != List.end(); I++) @@ -300,7 +318,6 @@ bool ReadPinDir(pkgPolicy &Plcy,string Dir) return false; return true; } - /*}}}*/ // ReadPinFile - Load the pin file into a Policy /*{{{*/ // --------------------------------------------------------------------- @@ -313,7 +330,7 @@ bool ReadPinFile(pkgPolicy &Plcy,string File) if (File.empty() == true) File = _config->FindFile("Dir::Etc::Preferences"); - if (FileExists(File) == false) + if (RealFileExists(File) == false) return true; FileFd Fd(File,FileFd::ReadOnly);