/* ######################################################################
Package Version Policy implementation
-
+
This is just a really simple wrapper around pkgVersionMatch with
some added goodies to manage the list of things..
-
- Priority Table:
-
- 1000 -> inf = Downgradeable priorities
- 1000 = The 'no downgrade' pseduo-status file
- 100 -> 1000 = Standard priorities
- 990 = Config file override package files
- 989 = Start for preference auto-priorities
- 500 = Default package files
- 100 = The status file and ButAutomaticUpgrades sources
- 0 -> 100 = NotAutomatic sources like experimental
- -inf -> 0 = Never selected
-
+
+ See man apt_preferences for what value means what.
+
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
+#include<config.h>
+
#include <apt-pkg/policy.h>
#include <apt-pkg/configuration.h>
+#include <apt-pkg/cachefilter.h>
#include <apt-pkg/tagfile.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/error.h>
#include <apt-pkg/sptr.h>
+#include <apt-pkg/cacheiterators.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/versionmatch.h>
-#include <apti18n.h>
-
+#include <ctype.h>
+#include <stddef.h>
+#include <string.h>
+#include <string>
+#include <vector>
#include <iostream>
#include <sstream>
+
+#include <apti18n.h>
/*}}}*/
using namespace std;
file matches the V0 policy engine. */
pkgPolicy::pkgPolicy(pkgCache *Owner) : Pins(0), PFPriority(0), Cache(Owner)
{
+ if (Owner == 0)
+ return;
PFPriority = new signed short[Owner->Head().PackageFileCount];
Pins = new Pin[Owner->Head().PackageCount];
// The config file has a master override.
string DefRel = _config->Find("APT::Default-Release");
if (DefRel.empty() == false)
- CreatePin(pkgVersionMatch::Release,"",DefRel,990);
-
+ {
+ bool found = false;
+ // FIXME: make ExpressionMatches static to use it here easily
+ pkgVersionMatch vm("", pkgVersionMatch::None);
+ for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); ++F)
+ {
+ if ((F->Archive != 0 && vm.ExpressionMatches(DefRel, F.Archive()) == true) ||
+ (F->Codename != 0 && vm.ExpressionMatches(DefRel, F.Codename()) == true) ||
+ (F->Version != 0 && vm.ExpressionMatches(DefRel, F.Version()) == true) ||
+ (DefRel.length() > 2 && DefRel[1] == '='))
+ found = true;
+ }
+ if (found == false)
+ _error->Error(_("The value '%s' is invalid for APT::Default-Release as such a release is not available in the sources"), DefRel.c_str());
+ else
+ CreatePin(pkgVersionMatch::Release,"",DefRel,990);
+ }
InitDefaults();
}
/*}}}*/
bool pkgPolicy::InitDefaults()
{
// Initialize the priorities based on the status of the package file
- for (pkgCache::PkgFileIterator I = Cache->FileBegin(); I != Cache->FileEnd(); I++)
+ for (pkgCache::PkgFileIterator I = Cache->FileBegin(); I != Cache->FileEnd(); ++I)
{
PFPriority[I->ID] = 500;
if ((I->Flags & pkgCache::Flag::NotSource) == pkgCache::Flag::NotSource)
// Apply the defaults..
SPtrArray<bool> Fixed = new bool[Cache->HeaderP->PackageFileCount];
memset(Fixed,0,sizeof(*Fixed)*Cache->HeaderP->PackageFileCount);
- signed Cur = 989;
StatusOverride = false;
- for (vector<Pin>::const_iterator I = Defaults.begin(); I != Defaults.end();
- I++, Cur--)
+ for (vector<Pin>::const_iterator I = Defaults.begin(); I != Defaults.end(); ++I)
{
pkgVersionMatch Match(I->Data,I->Type);
- for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)
+ for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); ++F)
{
- if (Match.FileMatch(F) == true && Fixed[F->ID] == false)
+ if (Fixed[F->ID] == false && Match.FileMatch(F) == true)
{
- if (I->Priority != 0 && I->Priority > 0)
- Cur = I->Priority;
-
- if (I->Priority < 0)
- PFPriority[F->ID] = I->Priority;
- else
- PFPriority[F->ID] = Cur;
-
- if (PFPriority[F->ID] > 1000)
+ PFPriority[F->ID] = I->Priority;
+
+ if (PFPriority[F->ID] >= 1000)
StatusOverride = true;
-
+
Fixed[F->ID] = true;
- }
- }
+ }
+ }
}
if (_config->FindB("Debug::pkgPolicy",false) == true)
- for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); F++)
- std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl;
-
- return true;
+ for (pkgCache::PkgFileIterator F = Cache->FileBegin(); F != Cache->FileEnd(); ++F)
+ std::clog << "Prio of " << F.FileName() << ' ' << PFPriority[F->ID] << std::endl;
+
+ return true;
}
/*}}}*/
// Policy::GetCandidateVer - Get the candidate install version /*{{{*/
effectively excludes everything <= 0 which are the non-automatic
priorities.. The status file is given a prio of 100 which will exclude
not-automatic sources, except in a single shot not-installed mode.
- The second pseduo-status file is at prio 1000, above which will permit
- the user to force-downgrade things.
-
+
The user pin is subject to the same priority rules as default
selections. Thus there are two ways to create a pin - a pin that
tracks the default when the default is taken away, and a permanent
pin that stays at that setting.
*/
- for (pkgCache::VerIterator Ver = Pkg.VersionList(); Ver.end() == false; Ver++)
+ bool PrefSeen = false;
+ 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 (Pref == Ver)
+ PrefSeen = true;
+
+ for (pkgCache::VerFileIterator VF = Ver.FileList(); VF.end() == false; ++VF)
{
/* If this is the status file, and the current version is not the
version in the status file (ie it is not installed, or somesuch)
{
Pref = Ver;
Max = Prio;
+ PrefSeen = true;
}
if (Prio > MaxAlt)
{
PrefAlt = Ver;
MaxAlt = Prio;
- }
- }
-
+ }
+ }
+
if (instVer == true && Max < 1000)
{
- /* Elevate our current selection (or the status file itself)
- to the Pseudo-status priority. */
- if (Pref.end() == true)
+ /* Not having seen the Pref yet means we have a specific pin below 1000
+ on a version below the current installed one, so ignore the specific pin
+ as this would be a downgrade otherwise */
+ if (PrefSeen == false || Pref.end() == true)
+ {
Pref = Ver;
- Max = 1000;
-
+ PrefSeen = true;
+ }
+ /* Elevate our current selection (or the status file itself) so that only
+ a downgrade can override it from now on */
+ Max = 999;
+
// Fast path optimize.
if (StatusOverride == false)
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
{
if (Name.empty() == true)
{
- Pin *P = &*Defaults.insert(Defaults.end(),PkgPin());
+ Pin *P = &*Defaults.insert(Defaults.end(),Pin());
P->Type = Type;
P->Priority = Priority;
P->Data = Data;
return;
}
- // Get a spot to put the pin
+ size_t found = Name.rfind(':');
+ string Arch;
+ if (found != string::npos) {
+ Arch = Name.substr(found+1);
+ Name.erase(found);
+ }
+
+ // Allow pinning by wildcards
+ // TODO: Maybe we should always prefer specific pins over non-
+ // specific ones.
+ if (Name[0] == '/' || Name.find_first_of("*[?") != string::npos)
+ {
+ pkgVersionMatch match(Data, Type);
+ for (pkgCache::GrpIterator G = Cache->GrpBegin(); G.end() != true; ++G)
+ if (match.ExpressionMatches(Name, G.Name()))
+ {
+ if (Arch.empty() == false)
+ CreatePin(Type, string(G.Name()).append(":").append(Arch), Data, Priority);
+ else
+ CreatePin(Type, G.Name(), Data, Priority);
+ }
+ return;
+ }
+
+ // find the package (group) this pin applies to
pkgCache::GrpIterator Grp = Cache->FindGrp(Name);
- for (pkgCache::PkgIterator Pkg = Grp.FindPkg("any");
- Pkg.end() != true; Pkg = Grp.NextPkg(Pkg))
+ bool matched = false;
+ if (Grp.end() == false)
{
- Pin *P = 0;
- if (Pkg.end() == false)
- P = Pins + Pkg->ID;
+ std::string MatchingArch;
+ if (Arch.empty() == true)
+ MatchingArch = Cache->NativeArch();
else
+ MatchingArch = Arch;
+ APT::CacheFilter::PackageArchitectureMatchesSpecification pams(MatchingArch);
+ for (pkgCache::PkgIterator Pkg = Grp.PackageList(); Pkg.end() != true; Pkg = Grp.NextPkg(Pkg))
{
- // Check the unmatched table
- for (vector<PkgPin>::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());
+ if (pams(Pkg.Arch()) == false)
+ continue;
+ Pin *P = Pins + Pkg->ID;
+ // the first specific stanza for a package is the ruler,
+ // all others need to be ignored
+ if (P->Type != pkgVersionMatch::None)
+ P = &*Unmatched.insert(Unmatched.end(),PkgPin(Pkg.FullName()));
+ P->Type = Type;
+ P->Priority = Priority;
+ P->Data = Data;
+ matched = true;
}
+ }
+
+ if (matched == false)
+ {
+ PkgPin *P = &*Unmatched.insert(Unmatched.end(),PkgPin(Name));
+ if (Arch.empty() == false)
+ P->Pkg.append(":").append(Arch);
P->Type = Type;
P->Priority = Priority;
P->Data = Data;
+ return;
}
}
/*}}}*/
// Policy::GetPriority - Get the priority of the package pin /*{{{*/
// ---------------------------------------------------------------------
/* */
-signed short pkgPolicy::GetPriority(pkgCache::PkgIterator const &Pkg)
+APT_PURE signed short pkgPolicy::GetPriority(pkgCache::PkgIterator const &Pkg)
{
if (Pins[Pkg->ID].Type != pkgVersionMatch::None)
- {
- // In this case 0 means default priority
- if (Pins[Pkg->ID].Priority == 0)
- return 989;
return Pins[Pkg->ID].Priority;
- }
-
return 0;
+}
+APT_PURE signed short pkgPolicy::GetPriority(pkgCache::PkgFileIterator const &File)
+{
+ return PFPriority[File->ID];
}
/*}}}*/
// PreferenceSection class - Overriding the default TrimRecord method /*{{{*/
all over the place rather than forcing a special format */
class PreferenceSection : public pkgTagSection
{
- void TrimRecord(bool BeforeRecord, const char* &End)
+ void TrimRecord(bool /*BeforeRecord*/, const char* &End)
{
for (; Stop < End && (Stop[0] == '\n' || Stop[0] == '\r' || Stop[0] == '#'); Stop++)
if (Stop[0] == '#')
vector<string> const List = GetListOfFilesInDir(Dir, "pref", true, true);
// Read the files
- for (vector<string>::const_iterator I = List.begin(); I != List.end(); I++)
+ for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
if (ReadPinFile(Plcy, *I) == false)
return false;
return true;
PreferenceSection Tags;
while (TF.Step(Tags) == true)
{
+ // can happen when there are only comments in a record
+ if (Tags.Count() == 0)
+ continue;
+
string Name = Tags.FindS("Package");
if (Name.empty() == true)
return _error->Error(_("Invalid record in the preferences file %s, no Package header"), File.c_str());
projects / apt.git / blobdiff