You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

1967 lines
62 KiB

// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: depcache.cc,v 1.25 2001/05/27 05:36:04 jgg Exp $
/* ######################################################################
Dependency Cache - Caches Dependency information.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include<config.h>
#include <apt-pkg/depcache.h>
#include <apt-pkg/versionmatch.h>
#include <apt-pkg/error.h>
#include <apt-pkg/sptr.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/tagfile.h>
#include <apt-pkg/progress.h>
#include <apt-pkg/cacheset.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/cacheiterators.h>
#include <apt-pkg/cachefile.h>
#include <apt-pkg/macros.h>
#include <stdio.h>
#include <string.h>
#include <list>
#include <string>
#include <utility>
#include <vector>
#include <algorithm>
#include <iostream>
#include <set>
#include <sys/stat.h>
#include <apti18n.h>
/*}}}*/
using std::string;
// helper for Install-Recommends-Sections and Never-MarkAuto-Sections /*{{{*/
static bool
ConfigValueInSubTree(const char* SubTree, const char *needle)
{
Configuration::Item const *Opts;
Opts = _config->Tree(SubTree);
if (Opts != 0 && Opts->Child != 0)
{
Opts = Opts->Child;
for (; Opts != 0; Opts = Opts->Next)
{
if (Opts->Value.empty() == true)
continue;
if (strcmp(needle, Opts->Value.c_str()) == 0)
return true;
}
}
return false;
}
/*}}}*/
pkgDepCache::ActionGroup::ActionGroup(pkgDepCache &cache) : /*{{{*/
d(NULL), cache(cache), released(false)
{
++cache.group_level;
}
void pkgDepCache::ActionGroup::release()
{
if(!released)
{
if(cache.group_level == 0)
std::cerr << "W: Unbalanced action groups, expect badness" << std::endl;
else
{
--cache.group_level;
if(cache.group_level == 0)
cache.MarkAndSweep();
}
released = true;
}
}
pkgDepCache::ActionGroup::~ActionGroup()
{
release();
}
/*}}}*/
// DepCache::pkgDepCache - Constructors /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgDepCache::pkgDepCache(pkgCache *pCache,Policy *Plcy) :
group_level(0), Cache(pCache), PkgState(0), DepState(0),
iUsrSize(0), iDownloadSize(0), iInstCount(0), iDelCount(0), iKeepCount(0),
iBrokenCount(0), iPolicyBrokenCount(0), iBadCount(0), d(NULL)
{
DebugMarker = _config->FindB("Debug::pkgDepCache::Marker", false);
DebugAutoInstall = _config->FindB("Debug::pkgDepCache::AutoInstall", false);
delLocalPolicy = 0;
LocalPolicy = Plcy;
if (LocalPolicy == 0)
delLocalPolicy = LocalPolicy = new Policy;
}
/*}}}*/
// DepCache::~pkgDepCache - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgDepCache::~pkgDepCache()
{
delete [] PkgState;
delete [] DepState;
delete delLocalPolicy;
}
/*}}}*/
// DepCache::Init - Generate the initial extra structures. /*{{{*/
// ---------------------------------------------------------------------
/* This allocats the extension buffers and initializes them. */
bool pkgDepCache::Init(OpProgress *Prog)
{
// Suppress mark updates during this operation (just in case) and
// run a mark operation when Init terminates.
ActionGroup actions(*this);
delete [] PkgState;
delete [] DepState;
PkgState = new StateCache[Head().PackageCount];
DepState = new unsigned char[Head().DependsCount];
memset(PkgState,0,sizeof(*PkgState)*Head().PackageCount);
memset(DepState,0,sizeof(*DepState)*Head().DependsCount);
if (Prog != 0)
{
Prog->OverallProgress(0,2*Head().PackageCount,Head().PackageCount,
_("Building dependency tree"));
Prog->SubProgress(Head().PackageCount,_("Candidate versions"));
}
/* Set the current state of everything. In this state all of the
packages are kept exactly as is. See AllUpgrade */
int Done = 0;
for (PkgIterator I = PkgBegin(); I.end() != true; ++I, ++Done)
{
if (Prog != 0 && Done%20 == 0)
Prog->Progress(Done);
// Find the proper cache slot
StateCache &State = PkgState[I->ID];
State.iFlags = 0;
// Figure out the install version
State.CandidateVer = GetCandidateVer(I);
State.InstallVer = I.CurrentVer();
State.Mode = ModeKeep;
State.Update(I,*this);
}
if (Prog != 0)
{
Prog->OverallProgress(Head().PackageCount,2*Head().PackageCount,
Head().PackageCount,
_("Building dependency tree"));
Prog->SubProgress(Head().PackageCount,_("Dependency generation"));
}
Update(Prog);
if(Prog != 0)
Prog->Done();
return true;
}
/*}}}*/
bool pkgDepCache::readStateFile(OpProgress *Prog) /*{{{*/
{
FileFd state_file;
string const state = _config->FindFile("Dir::State::extended_states");
if(RealFileExists(state)) {
state_file.Open(state, FileFd::ReadOnly);
off_t const file_size = state_file.Size();
if(Prog != NULL)
Prog->OverallProgress(0, file_size, 1,
_("Reading state information"));
pkgTagFile tagfile(&state_file);
pkgTagSection section;
off_t amt = 0;
bool const debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
while(tagfile.Step(section)) {
string const pkgname = section.FindS("Package");
string pkgarch = section.FindS("Architecture");
if (pkgarch.empty() == true)
pkgarch = "any";
pkgCache::PkgIterator pkg = Cache->FindPkg(pkgname, pkgarch);
// Silently ignore unknown packages and packages with no actual version.
if(pkg.end() == true || pkg->VersionList == 0)
continue;
short const reason = section.FindI("Auto-Installed", 0);
if(reason > 0)
{
PkgState[pkg->ID].Flags |= Flag::Auto;
if (unlikely(debug_autoremove))
std::clog << "Auto-Installed : " << pkg.FullName() << std::endl;
if (pkgarch == "any")
{
pkgCache::GrpIterator G = pkg.Group();
for (pkg = G.NextPkg(pkg); pkg.end() != true; pkg = G.NextPkg(pkg))
if (pkg->VersionList != 0)
PkgState[pkg->ID].Flags |= Flag::Auto;
}
}
amt += section.size();
if(Prog != NULL)
Prog->OverallProgress(amt, file_size, 1,
_("Reading state information"));
}
if(Prog != NULL)
Prog->OverallProgress(file_size, file_size, 1,
_("Reading state information"));
}
return true;
}
/*}}}*/
bool pkgDepCache::writeStateFile(OpProgress * /*prog*/, bool InstalledOnly) /*{{{*/
{
bool const debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
if(debug_autoremove)
std::clog << "pkgDepCache::writeStateFile()" << std::endl;
FileFd StateFile;
string const state = _config->FindFile("Dir::State::extended_states");
if (CreateAPTDirectoryIfNeeded(_config->FindDir("Dir::State"), flNotFile(state)) == false)
return false;
// if it does not exist, create a empty one
if(!RealFileExists(state))
{
StateFile.Open(state, FileFd::WriteAtomic);
StateFile.Close();
}
// open it
if(!StateFile.Open(state, FileFd::ReadOnly))
return _error->Error(_("Failed to open StateFile %s"),
state.c_str());
FileFd OutFile(state, FileFd::ReadWrite | FileFd::Atomic);
if (OutFile.IsOpen() == false || OutFile.Failed() == true)
return _error->Error(_("Failed to write temporary StateFile %s"), state.c_str());
// first merge with the existing sections
pkgTagFile tagfile(&StateFile);
pkgTagSection section;
std::set<string> pkgs_seen;
while(tagfile.Step(section)) {
string const pkgname = section.FindS("Package");
string pkgarch = section.FindS("Architecture");
if (pkgarch.empty() == true)
pkgarch = "native";
// Silently ignore unknown packages and packages with no actual
// version.
pkgCache::PkgIterator pkg = Cache->FindPkg(pkgname, pkgarch);
if(pkg.end() || pkg.VersionList().end())
continue;
StateCache const &P = PkgState[pkg->ID];
bool newAuto = (P.Flags & Flag::Auto);
// skip not installed or now-removed ones if requested
if (InstalledOnly && (
(pkg->CurrentVer == 0 && P.Mode != ModeInstall) ||
(pkg->CurrentVer != 0 && P.Mode == ModeDelete)))
{
// The section is obsolete if it contains no other tag
unsigned int const count = section.Count();
if (count < 2 ||
(count == 2 && section.Exists("Auto-Installed")) ||
(count == 3 && section.Exists("Auto-Installed") && section.Exists("Architecture")))
continue;
else
newAuto = false;
}
if(_config->FindB("Debug::pkgAutoRemove",false))
std::clog << "Update existing AutoInstall info: "
<< pkg.FullName() << std::endl;
std::vector<pkgTagSection::Tag> rewrite;
rewrite.push_back(pkgTagSection::Tag::Rewrite("Architecture", pkg.Arch()));
rewrite.push_back(pkgTagSection::Tag::Rewrite("Auto-Installed", newAuto ? "1" : "0"));
section.Write(OutFile, NULL, rewrite);
if (OutFile.Write("\n", 1) == false)
return false;
pkgs_seen.insert(pkg.FullName());
}
// then write the ones we have not seen yet
for(pkgCache::PkgIterator pkg=Cache->PkgBegin(); !pkg.end(); ++pkg) {
StateCache const &P = PkgState[pkg->ID];
if(P.Flags & Flag::Auto) {
if (pkgs_seen.find(pkg.FullName()) != pkgs_seen.end()) {
if(debug_autoremove)
std::clog << "Skipping already written " << pkg.FullName() << std::endl;
continue;
}
// skip not installed ones if requested
if (InstalledOnly && (
(pkg->CurrentVer == 0 && P.Mode != ModeInstall) ||
(pkg->CurrentVer != 0 && P.Mode == ModeDelete)))
continue;
const char* const pkgarch = pkg.Arch();
if (strcmp(pkgarch, "all") == 0)
continue;
if(debug_autoremove)
std::clog << "Writing new AutoInstall: " << pkg.FullName() << std::endl;
std::string stanza = "Package: ";
stanza.append(pkg.Name())
.append("\nArchitecture: ").append(pkgarch)
.append("\nAuto-Installed: 1\n\n");
if (OutFile.Write(stanza.c_str(), stanza.length()) == false)
return false;
}
}
if (OutFile.Close() == false)
return false;
chmod(state.c_str(), 0644);
return true;
}
/*}}}*/
// DepCache::CheckDep - Checks a single dependency /*{{{*/
// ---------------------------------------------------------------------
/* This first checks the dependency against the main target package and
then walks along the package provides list and checks if each provides
will be installed then checks the provides against the dep. Res will be
set to the package which was used to satisfy the dep. */
bool pkgDepCache::CheckDep(DepIterator Dep,int Type,PkgIterator &Res)
{
Res = Dep.TargetPkg();
/* Check simple depends. A depends -should- never self match but
we allow it anyhow because dpkg does. Technically it is a packaging
bug. Conflicts may never self match */
if (Dep.IsIgnorable(Res) == false)
{
PkgIterator Pkg = Dep.TargetPkg();
// Check the base package
if (Type == NowVersion && Pkg->CurrentVer != 0)
if (Dep.IsSatisfied(Pkg.CurrentVer()) == true)
return true;
if (Type == InstallVersion && PkgState[Pkg->ID].InstallVer != 0)
if (Dep.IsSatisfied(PkgState[Pkg->ID].InstVerIter(*this)) == true)
return true;
if (Type == CandidateVersion && PkgState[Pkg->ID].CandidateVer != 0)
if (Dep.IsSatisfied(PkgState[Pkg->ID].CandidateVerIter(*this)) == true)
return true;
}
if (Dep->Type == Dep::Obsoletes)
return false;
// Check the providing packages
PrvIterator P = Dep.TargetPkg().ProvidesList();
for (; P.end() != true; ++P)
{
if (Dep.IsIgnorable(P) == true)
continue;
// Check if the provides is a hit
if (Type == NowVersion)
{
if (P.OwnerPkg().CurrentVer() != P.OwnerVer())
continue;
}
if (Type == InstallVersion)
{
StateCache &State = PkgState[P.OwnerPkg()->ID];
if (State.InstallVer != (Version *)P.OwnerVer())
continue;
}
if (Type == CandidateVersion)
{
StateCache &State = PkgState[P.OwnerPkg()->ID];
if (State.CandidateVer != (Version *)P.OwnerVer())
continue;
}
// Compare the versions.
if (Dep.IsSatisfied(P) == true)
{
Res = P.OwnerPkg();
return true;
}
}
return false;
}
/*}}}*/
// DepCache::AddSizes - Add the packages sizes to the counters /*{{{*/
// ---------------------------------------------------------------------
/* Call with Inverse = true to preform the inverse opration */
void pkgDepCache::AddSizes(const PkgIterator &Pkg, bool const Inverse)
{
StateCache &P = PkgState[Pkg->ID];
if (Pkg->VersionList == 0)
return;
if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
P.Keep() == true)
return;
// Compute the size data
if (P.NewInstall() == true)
{
if (Inverse == false) {
iUsrSize += P.InstVerIter(*this)->InstalledSize;
iDownloadSize += P.InstVerIter(*this)->Size;
} else {
iUsrSize -= P.InstVerIter(*this)->InstalledSize;
iDownloadSize -= P.InstVerIter(*this)->Size;
}
return;
}
// Upgrading
if (Pkg->CurrentVer != 0 &&
(P.InstallVer != (Version *)Pkg.CurrentVer() ||
(P.iFlags & ReInstall) == ReInstall) && P.InstallVer != 0)
{
if (Inverse == false) {
iUsrSize -= Pkg.CurrentVer()->InstalledSize;
iUsrSize += P.InstVerIter(*this)->InstalledSize;
iDownloadSize += P.InstVerIter(*this)->Size;
} else {
iUsrSize -= P.InstVerIter(*this)->InstalledSize;
iUsrSize += Pkg.CurrentVer()->InstalledSize;
iDownloadSize -= P.InstVerIter(*this)->Size;
}
return;
}
// Reinstall
if (Pkg.State() == pkgCache::PkgIterator::NeedsUnpack &&
P.Delete() == false)
{
if (Inverse == false)
iDownloadSize += P.InstVerIter(*this)->Size;
else
iDownloadSize -= P.InstVerIter(*this)->Size;
return;
}
// Removing
if (Pkg->CurrentVer != 0 && P.InstallVer == 0)
{
if (Inverse == false)
iUsrSize -= Pkg.CurrentVer()->InstalledSize;
else
iUsrSize += Pkg.CurrentVer()->InstalledSize;
return;
}
}
/*}}}*/
// DepCache::AddStates - Add the package to the state counter /*{{{*/
// ---------------------------------------------------------------------
/* This routine is tricky to use, you must make sure that it is never
called twice for the same package. This means the Remove/Add section
should be as short as possible and not encompass any code that will
calld Remove/Add itself. Remember, dependencies can be circular so
while processing a dep for Pkg it is possible that Add/Remove
will be called on Pkg */
void pkgDepCache::AddStates(const PkgIterator &Pkg, bool const Invert)
{
signed char const Add = (Invert == false) ? 1 : -1;
StateCache &State = PkgState[Pkg->ID];
// The Package is broken (either minimal dep or policy dep)
if ((State.DepState & DepInstMin) != DepInstMin)
iBrokenCount += Add;
if ((State.DepState & DepInstPolicy) != DepInstPolicy)
iPolicyBrokenCount += Add;
// Bad state
if (Pkg.State() != PkgIterator::NeedsNothing)
iBadCount += Add;
// Not installed
if (Pkg->CurrentVer == 0)
{
if (State.Mode == ModeDelete &&
(State.iFlags & Purge) == Purge && Pkg.Purge() == false)
iDelCount += Add;
if (State.Mode == ModeInstall)
iInstCount += Add;
return;
}
// Installed, no upgrade
if (State.Status == 0)
{
if (State.Mode == ModeDelete)
iDelCount += Add;
else
if ((State.iFlags & ReInstall) == ReInstall)
iInstCount += Add;
return;
}
// Alll 3 are possible
if (State.Mode == ModeDelete)
iDelCount += Add;
if (State.Mode == ModeKeep)
iKeepCount += Add;
if (State.Mode == ModeInstall)
iInstCount += Add;
}
/*}}}*/
// DepCache::BuildGroupOrs - Generate the Or group dep data /*{{{*/
// ---------------------------------------------------------------------
/* The or group results are stored in the last item of the or group. This
allows easy detection of the state of a whole or'd group. */
void pkgDepCache::BuildGroupOrs(VerIterator const &V)
{
unsigned char Group = 0;
for (DepIterator D = V.DependsList(); D.end() != true; ++D)
{
// Build the dependency state.
unsigned char &State = DepState[D->ID];
/* Invert for Conflicts. We have to do this twice to get the
right sense for a conflicts group */
if (D.IsNegative() == true)
State = ~State;
// Add to the group if we are within an or..
State &= 0x7;
Group |= State;
State |= Group << 3;
if ((D->CompareOp & Dep::Or) != Dep::Or)
Group = 0;
// Invert for Conflicts
if (D.IsNegative() == true)
State = ~State;
}
}
/*}}}*/
// DepCache::VersionState - Perform a pass over a dependency list /*{{{*/
// ---------------------------------------------------------------------
/* This is used to run over a dependency list and determine the dep
state of the list, filtering it through both a Min check and a Policy
check. The return result will have SetMin/SetPolicy low if a check
fails. It uses the DepState cache for it's computations. */
unsigned char pkgDepCache::VersionState(DepIterator D,unsigned char Check,
unsigned char SetMin,
unsigned char SetPolicy)
{
unsigned char Dep = 0xFF;
while (D.end() != true)
{
// Compute a single dependency element (glob or)
DepIterator Start = D;
unsigned char State = 0;
for (bool LastOR = true; D.end() == false && LastOR == true; ++D)
{
State |= DepState[D->ID];
LastOR = (D->CompareOp & Dep::Or) == Dep::Or;
}
// Minimum deps that must be satisfied to have a working package
if (Start.IsCritical() == true)
if ((State & Check) != Check)
Dep &= ~SetMin;
// Policy deps that must be satisfied to install the package
if (IsImportantDep(Start) == true &&
(State & Check) != Check)
Dep &= ~SetPolicy;
}
return Dep;
}
/*}}}*/
// DepCache::DependencyState - Compute the 3 results for a dep /*{{{*/
// ---------------------------------------------------------------------
/* This is the main dependency computation bit. It computes the 3 main
results for a dependencys, Now, Install and Candidate. Callers must
invert the result if dealing with conflicts. */
unsigned char pkgDepCache::DependencyState(DepIterator &D)
{
unsigned char State = 0;
if (CheckDep(D,NowVersion) == true)
State |= DepNow;
if (CheckDep(D,InstallVersion) == true)
State |= DepInstall;
if (CheckDep(D,CandidateVersion) == true)
State |= DepCVer;
return State;
}
/*}}}*/
// DepCache::UpdateVerState - Compute the Dep member of the state /*{{{*/
// ---------------------------------------------------------------------
/* This determines the combined dependency representation of a package
for its two states now and install. This is done by using the pre-generated
dependency information. */
void pkgDepCache::UpdateVerState(PkgIterator Pkg)
{
// Empty deps are always true
StateCache &State = PkgState[Pkg->ID];
State.DepState = 0xFF;
// Check the Current state
if (Pkg->CurrentVer != 0)
{
DepIterator D = Pkg.CurrentVer().DependsList();
State.DepState &= VersionState(D,DepNow,DepNowMin,DepNowPolicy);
}
/* Check the candidate state. We do not compare against the whole as
a candidate state but check the candidate version against the
install states */
if (State.CandidateVer != 0)
{
DepIterator D = State.CandidateVerIter(*this).DependsList();
State.DepState &= VersionState(D,DepInstall,DepCandMin,DepCandPolicy);
}
// Check target state which can only be current or installed
if (State.InstallVer != 0)
{
DepIterator D = State.InstVerIter(*this).DependsList();
State.DepState &= VersionState(D,DepInstall,DepInstMin,DepInstPolicy);
}
}
/*}}}*/
// DepCache::Update - Figure out all the state information /*{{{*/
// ---------------------------------------------------------------------
/* This will figure out the state of all the packages and all the
dependencies based on the current policy. */
void pkgDepCache::Update(OpProgress *Prog)
{
iUsrSize = 0;
iDownloadSize = 0;
iInstCount = 0;
iDelCount = 0;
iKeepCount = 0;
iBrokenCount = 0;
iPolicyBrokenCount = 0;
iBadCount = 0;
// Perform the depends pass
int Done = 0;
for (PkgIterator I = PkgBegin(); I.end() != true; ++I, ++Done)
{
if (Prog != 0 && Done%20 == 0)
Prog->Progress(Done);
for (VerIterator V = I.VersionList(); V.end() != true; ++V)
{
unsigned char Group = 0;
for (DepIterator D = V.DependsList(); D.end() != true; ++D)
{
// Build the dependency state.
unsigned char &State = DepState[D->ID];
State = DependencyState(D);
// Add to the group if we are within an or..
Group |= State;
State |= Group << 3;
if ((D->CompareOp & Dep::Or) != Dep::Or)
Group = 0;
// Invert for Conflicts
if (D.IsNegative() == true)
State = ~State;
}
}
// Compute the package dependency state and size additions
AddSizes(I);
UpdateVerState(I);
AddStates(I);
}
if (Prog != 0)
Prog->Progress(Done);
readStateFile(Prog);
}
/*}}}*/
// DepCache::Update - Update the deps list of a package /*{{{*/
// ---------------------------------------------------------------------
/* This is a helper for update that only does the dep portion of the scan.
It is mainly meant to scan reverse dependencies. */
void pkgDepCache::Update(DepIterator D)
{
// Update the reverse deps
for (;D.end() != true; ++D)
{
unsigned char &State = DepState[D->ID];
State = DependencyState(D);
// Invert for Conflicts
if (D.IsNegative() == true)
State = ~State;
RemoveStates(D.ParentPkg());
BuildGroupOrs(D.ParentVer());
UpdateVerState(D.ParentPkg());
AddStates(D.ParentPkg());
}
}
/*}}}*/
// DepCache::Update - Update the related deps of a package /*{{{*/
// ---------------------------------------------------------------------
/* This is called whenever the state of a package changes. It updates
all cached dependencies related to this package. */
void pkgDepCache::Update(PkgIterator const &Pkg)
{
// Recompute the dep of the package
RemoveStates(Pkg);
UpdateVerState(Pkg);
AddStates(Pkg);
// Update the reverse deps
Update(Pkg.RevDependsList());
// Update the provides map for the current ver
if (Pkg->CurrentVer != 0)
for (PrvIterator P = Pkg.CurrentVer().ProvidesList();
P.end() != true; ++P)
Update(P.ParentPkg().RevDependsList());
// Update the provides map for the candidate ver
if (PkgState[Pkg->ID].CandidateVer != 0)
for (PrvIterator P = PkgState[Pkg->ID].CandidateVerIter(*this).ProvidesList();
P.end() != true; ++P)
Update(P.ParentPkg().RevDependsList());
}
/*}}}*/
// DepCache::MarkKeep - Put the package in the keep state /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgDepCache::MarkKeep(PkgIterator const &Pkg, bool Soft, bool FromUser,
unsigned long Depth)
{
if (IsModeChangeOk(ModeKeep, Pkg, Depth, FromUser) == false)
return false;
/* Reject an attempt to keep a non-source broken installed package, those
must be upgraded */
if (Pkg.State() == PkgIterator::NeedsUnpack &&
Pkg.CurrentVer().Downloadable() == false)
return false;
/* We changed the soft state all the time so the UI is a bit nicer
to use */
StateCache &P = PkgState[Pkg->ID];
// Check that it is not already kept
if (P.Mode == ModeKeep)
return true;
if (Soft == true)
P.iFlags |= AutoKept;
else
P.iFlags &= ~AutoKept;
ActionGroup group(*this);
#if 0 // reseting the autoflag here means we lose the
// auto-mark information if a user selects a package for removal
// but changes his mind then and sets it for keep again
// - this makes sense as default when all Garbage dependencies
// are automatically marked for removal (as aptitude does).
// setting a package for keep then makes it no longer autoinstalled
// for all other use-case this action is rather surprising
if(FromUser && !P.Marked)
P.Flags &= ~Flag::Auto;
#endif
if (DebugMarker == true)
std::clog << OutputInDepth(Depth) << "MarkKeep " << Pkg << " FU=" << FromUser << std::endl;
RemoveSizes(Pkg);
RemoveStates(Pkg);
P.Mode = ModeKeep;
if (Pkg->CurrentVer == 0)
P.InstallVer = 0;
else
P.InstallVer = Pkg.CurrentVer();
AddStates(Pkg);
Update(Pkg);
AddSizes(Pkg);
return true;
}
/*}}}*/
// DepCache::MarkDelete - Put the package in the delete state /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge,
unsigned long Depth, bool FromUser)
{
if (IsModeChangeOk(ModeDelete, Pkg, Depth, FromUser) == false)
return false;
StateCache &P = PkgState[Pkg->ID];
// Check that it is not already marked for delete
if ((P.Mode == ModeDelete || P.InstallVer == 0) &&
(Pkg.Purge() == true || rPurge == false))
return true;
// check if we are allowed to remove the package
if (IsDeleteOk(Pkg,rPurge,Depth,FromUser) == false)
return false;
P.iFlags &= ~(AutoKept | Purge);
if (rPurge == true)
P.iFlags |= Purge;
ActionGroup group(*this);
if (DebugMarker == true)
std::clog << OutputInDepth(Depth) << (rPurge ? "MarkPurge " : "MarkDelete ") << Pkg << " FU=" << FromUser << std::endl;
RemoveSizes(Pkg);
RemoveStates(Pkg);
if (Pkg->CurrentVer == 0 && (Pkg.Purge() == true || rPurge == false))
P.Mode = ModeKeep;
else
P.Mode = ModeDelete;
P.InstallVer = 0;
AddStates(Pkg);
Update(Pkg);
AddSizes(Pkg);
return true;
}
/*}}}*/
// DepCache::IsDeleteOk - check if it is ok to remove this package /*{{{*/
// ---------------------------------------------------------------------
/* The default implementation tries to prevent deletion of install requests.
dpkg holds are enforced by the private IsModeChangeOk */
bool pkgDepCache::IsDeleteOk(PkgIterator const &Pkg,bool rPurge,
unsigned long Depth, bool FromUser)
{
return IsDeleteOkProtectInstallRequests(Pkg, rPurge, Depth, FromUser);
}
bool pkgDepCache::IsDeleteOkProtectInstallRequests(PkgIterator const &Pkg,
bool const /*rPurge*/, unsigned long const Depth, bool const FromUser)
{
if (FromUser == false && Pkg->CurrentVer == 0)
{
StateCache &P = PkgState[Pkg->ID];
if (P.InstallVer != 0 && P.Status == 2 && (P.Flags & Flag::Auto) != Flag::Auto)
{
if (DebugMarker == true)
std::clog << OutputInDepth(Depth) << "Manual install request prevents MarkDelete of " << Pkg << std::endl;
return false;
}
}
return true;
}
/*}}}*/
// DepCache::IsModeChangeOk - check if it is ok to change the mode /*{{{*/
// ---------------------------------------------------------------------
/* this is used by all Mark methods on the very first line to check sanity
and prevents mode changes for packages on hold for example.
If you want to check Mode specific stuff you can use the virtual public
Is<Mode>Ok methods instead */
static char const* PrintMode(char const mode)
{
switch (mode)
{
case pkgDepCache::ModeInstall: return "Install";
case pkgDepCache::ModeKeep: return "Keep";
case pkgDepCache::ModeDelete: return "Delete";
case pkgDepCache::ModeGarbage: return "Garbage";
default: return "UNKNOWN";
}
}
bool pkgDepCache::IsModeChangeOk(ModeList const mode, PkgIterator const &Pkg,
unsigned long const Depth, bool const FromUser)
{
// we are not trying to hard…
if (unlikely(Depth > 100))
return false;
// general sanity
if (unlikely(Pkg.end() == true || Pkg->VersionList == 0))
return false;
// the user is always right
if (FromUser == true)
return true;
StateCache &P = PkgState[Pkg->ID];
// not changing the mode is obviously also fine as we might want to call
// e.g. MarkInstall multiple times with different arguments for the same package
if (P.Mode == mode)
return true;
// if previous state was set by user only user can reset it
if ((P.iFlags & Protected) == Protected)
{
if (unlikely(DebugMarker == true))
std::clog << OutputInDepth(Depth) << "Ignore Mark" << PrintMode(mode)
<< " of " << Pkg << " as its mode (" << PrintMode(P.Mode)
<< ") is protected" << std::endl;
return false;
}
// enforce dpkg holds
else if (mode != ModeKeep && Pkg->SelectedState == pkgCache::State::Hold &&
_config->FindB("APT::Ignore-Hold",false) == false)
{
if (unlikely(DebugMarker == true))
std::clog << OutputInDepth(Depth) << "Hold prevents Mark" << PrintMode(mode)
<< " of " << Pkg << std::endl;
return false;
}
return true;
}
/*}}}*/
// DepCache::MarkInstall - Put the package in the install state /*{{{*/
// ---------------------------------------------------------------------
/* */
struct CompareProviders {
pkgCache::PkgIterator const Pkg;
explicit CompareProviders(pkgCache::DepIterator const &Dep) : Pkg(Dep.TargetPkg()) {};
//bool operator() (APT::VersionList::iterator const &AV, APT::VersionList::iterator const &BV)
bool operator() (pkgCache::VerIterator const &AV, pkgCache::VerIterator const &BV)
{
pkgCache::PkgIterator const A = AV.ParentPkg();
pkgCache::PkgIterator const B = BV.ParentPkg();
// Prefer MA:same packages if other architectures for it are installed
if ((AV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same ||
(BV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
{
bool instA = false;
if ((AV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
{
pkgCache::GrpIterator Grp = A.Group();
for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
if (P->CurrentVer != 0)
{
instA = true;
break;
}
}
bool instB = false;
if ((BV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
{
pkgCache::GrpIterator Grp = B.Group();
for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
{
if (P->CurrentVer != 0)
{
instB = true;
break;
}
}
}
if (instA != instB)
return instA == false;
}
// Prefer packages in the same group as the target; e.g. foo:i386, foo:amd64
if (A->Group != B->Group)
{
if (A->Group == Pkg->Group && B->Group != Pkg->Group)
return false;
else if (B->Group == Pkg->Group && A->Group != Pkg->Group)
return true;
}
// we like essentials
if ((A->Flags & pkgCache::Flag::Essential) != (B->Flags & pkgCache::Flag::Essential))
{
if ((A->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
return false;
else if ((B->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
return true;
}
if ((A->Flags & pkgCache::Flag::Important) != (B->Flags & pkgCache::Flag::Important))
{
if ((A->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
return false;
else if ((B->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important)
return true;
}
// prefer native architecture
if (strcmp(A.Arch(), B.Arch()) != 0)
{
if (strcmp(A.Arch(), A.Cache()->NativeArch()) == 0)
return false;
else if (strcmp(B.Arch(), B.Cache()->NativeArch()) == 0)
return true;
std::vector<std::string> archs = APT::Configuration::getArchitectures();
for (std::vector<std::string>::const_iterator a = archs.begin(); a != archs.end(); ++a)
if (*a == A.Arch())
return false;
else if (*a == B.Arch())
return true;
}
// higher priority seems like a good idea
if (AV->Priority != BV->Priority)
return AV->Priority > BV->Priority;
// unable to decide…
return A->ID < B->ID;
}
};
bool pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
unsigned long Depth, bool FromUser,
bool ForceImportantDeps)
{
if (IsModeChangeOk(ModeInstall, Pkg, Depth, FromUser) == false)
return false;
StateCache &P = PkgState[Pkg->ID];
// See if there is even any possible instalation candidate
if (P.CandidateVer == 0)
return false;
/* Check that it is not already marked for install and that it can be
installed */
if ((P.InstPolicyBroken() == false && P.InstBroken() == false) &&
(P.Mode == ModeInstall ||
P.CandidateVer == (Version *)Pkg.CurrentVer()))
{
if (P.CandidateVer == (Version *)Pkg.CurrentVer() && P.InstallVer == 0)
return MarkKeep(Pkg, false, FromUser, Depth+1);
return true;
}
// check if we are allowed to install the package
if (IsInstallOk(Pkg,AutoInst,Depth,FromUser) == false)
return false;
ActionGroup group(*this);
P.iFlags &= ~AutoKept;
/* Target the candidate version and remove the autoflag. We reset the
autoflag below if this was called recursively. Otherwise the user
should have the ability to de-auto a package by changing its state */
RemoveSizes(Pkg);
RemoveStates(Pkg);
P.Mode = ModeInstall;
P.InstallVer = P.CandidateVer;
if(FromUser)
{
// Set it to manual if it's a new install or already installed,
// but only if its not marked by the autoremover (aptitude depend on this behavior)
// or if we do automatic installation (aptitude never does it)
if(P.Status == 2 || (Pkg->CurrentVer != 0 && (AutoInst == true || P.Marked == false)))
P.Flags &= ~Flag::Auto;
}
else
{
// Set it to auto if this is a new install.
if(P.Status == 2)
P.Flags |= Flag::Auto;
}
if (P.CandidateVer == (Version *)Pkg.CurrentVer())
P.Mode = ModeKeep;
AddStates(Pkg);
Update(Pkg);
AddSizes(Pkg);
if (AutoInst == false || _config->Find("APT::Solver", "internal") != "internal")
return true;
if (DebugMarker == true)
std::clog << OutputInDepth(Depth) << "MarkInstall " << Pkg << " FU=" << FromUser << std::endl;
DepIterator Dep = P.InstVerIter(*this).DependsList();
for (; Dep.end() != true;)
{
// Grok or groups
DepIterator Start = Dep;
bool Result = true;
unsigned Ors = 0;
for (bool LastOR = true; Dep.end() == false && LastOR == true; ++Dep, ++Ors)
{
LastOR = (Dep->CompareOp & Dep::Or) == Dep::Or;
if ((DepState[Dep->ID] & DepInstall) == DepInstall)
Result = false;
}
// Dep is satisfied okay.
if (Result == false)
continue;
/* Check if this dep should be consider for install. If it is a user
defined important dep and we are installed a new package then
it will be installed. Otherwise we only check for important
deps that have changed from the installed version */
if (IsImportantDep(Start) == false)
continue;
/* If we are in an or group locate the first or that can
succeed. We have already cached this… */
for (; Ors > 1 && (DepState[Start->ID] & DepCVer) != DepCVer; --Ors)
++Start;
/* unsatisfiable dependency: IsInstallOkDependenciesSatisfiableByCandidates
would have prevented us to get here if not overridden, so just skip
over the problem here as the frontend will know what it is doing */
if (Ors == 1 && (DepState[Start->ID] &DepCVer) != DepCVer && Start.IsNegative() == false)
continue;
/* Check if any ImportantDep() (but not Critical) were added
* since we installed the package. Also check for deps that
* were satisfied in the past: for instance, if a version
* restriction in a Recommends was tightened, upgrading the
* package should follow that Recommends rather than causing the
* dependency to be removed. (bug #470115)
*/
if (Pkg->CurrentVer != 0 && ForceImportantDeps == false && Start.IsCritical() == false)
{
bool isNewImportantDep = true;
bool isPreviouslySatisfiedImportantDep = false;
for (DepIterator D = Pkg.CurrentVer().DependsList(); D.end() != true; ++D)
{
//FIXME: Should we handle or-group better here?
// We do not check if the package we look for is part of the same or-group
// we might find while searching, but could that really be a problem?
if (D.IsCritical() == true || IsImportantDep(D) == false ||
Start.TargetPkg() != D.TargetPkg())
continue;
isNewImportantDep = false;
while ((D->CompareOp & Dep::Or) != 0)
++D;
isPreviouslySatisfiedImportantDep = (((*this)[D] & DepGNow) != 0);
if (isPreviouslySatisfiedImportantDep == true)
break;
}
if(isNewImportantDep == true)
{
if (DebugAutoInstall == true)
std::clog << OutputInDepth(Depth) << "new important dependency: "
<< Start.TargetPkg().FullName() << std::endl;
}
else if(isPreviouslySatisfiedImportantDep == true)
{
if (DebugAutoInstall == true)
std::clog << OutputInDepth(Depth) << "previously satisfied important dependency on "
<< Start.TargetPkg().FullName() << std::endl;
}
else
{
if (DebugAutoInstall == true)
std::clog << OutputInDepth(Depth) << "ignore old unsatisfied important dependency on "
<< Start.TargetPkg().FullName() << std::endl;
continue;
}
}
/* This bit is for processing the possibility of an install/upgrade
fixing the problem for "positive" dependencies */
if (Start.IsNegative() == false && (DepState[Start->ID] & DepCVer) == DepCVer)
{
pkgCacheFile CacheFile(this);
APT::VersionList verlist = APT::VersionList::FromDependency(CacheFile, Start, APT::CacheSetHelper::CANDIDATE);
CompareProviders comp(Start);
do {
APT::VersionList::iterator InstVer = std::max_element(verlist.begin(), verlist.end(), comp);
if (InstVer == verlist.end())
break;
pkgCache::PkgIterator InstPkg = InstVer.ParentPkg();
if(DebugAutoInstall == true)
std::clog << OutputInDepth(Depth) << "Installing " << InstPkg.Name()
<< " as " << Start.DepType() << " of " << Pkg.Name()
<< std::endl;
if (MarkInstall(InstPkg, true, Depth + 1, false, ForceImportantDeps) == false)
{
verlist.erase(InstVer);
continue;
}
// now check if we should consider it a automatic dependency or not
if(InstPkg->CurrentVer == 0 && InstVer->Section != 0 && ConfigValueInSubTree("APT::Never-MarkAuto-Sections", InstVer.Section()))
{
if(DebugAutoInstall == true)
std::clog << OutputInDepth(Depth) << "Setting NOT as auto-installed (direct "
<< Start.DepType() << " of pkg in APT::Never-MarkAuto-Sections)" << std::endl;
MarkAuto(InstPkg, false);
}
break;
} while(true);
continue;
}
/* Negative dependencies have no or-group
If the dependency isn't versioned, we try if an upgrade might solve the problem.
Otherwise we remove the offender if needed */
else if (Start.IsNegative() == true && Start->Type != pkgCache::Dep::Obsoletes)
{
SPtrArray<Version *> List = Start.AllTargets();
pkgCache::PkgIterator TrgPkg = Start.TargetPkg();
for (Version **I = List; *I != 0; I++)
{
VerIterator Ver(*this,*I);
PkgIterator Pkg = Ver.ParentPkg();
/* The List includes all packages providing this dependency,
even providers which are not installed, so skip them. */
if (PkgState[Pkg->ID].InstallVer == 0)
continue;
/* Ignore negative dependencies that we are not going to
get installed */
if (PkgState[Pkg->ID].InstallVer != *I)
continue;
if ((Start->Version != 0 || TrgPkg != Pkg) &&
PkgState[Pkg->ID].CandidateVer != PkgState[Pkg->ID].InstallVer &&
PkgState[Pkg->ID].CandidateVer != *I &&
MarkInstall(Pkg,true,Depth + 1, false, ForceImportantDeps) == true)
continue;
else if (Start->Type == pkgCache::Dep::Conflicts ||
Start->Type == pkgCache::Dep::DpkgBreaks)
{
if(DebugAutoInstall == true)
std::clog << OutputInDepth(Depth)
<< " Removing: " << Pkg.Name()
<< std::endl;
if (MarkDelete(Pkg,false,Depth + 1, false) == false)
break;
}
}
continue;
}
}
return Dep.end() == true;
}
/*}}}*/
// DepCache::IsInstallOk - check if it is ok to install this package /*{{{*/
// ---------------------------------------------------------------------
/* The default implementation checks if the installation of an M-A:same
package would lead us into a version-screw and if so forbids it.
dpkg holds are enforced by the private IsModeChangeOk */
bool pkgDepCache::IsInstallOk(PkgIterator const &Pkg,bool AutoInst,
unsigned long Depth, bool FromUser)
{
return IsInstallOkMultiArchSameVersionSynced(Pkg,AutoInst, Depth, FromUser) &&
IsInstallOkDependenciesSatisfiableByCandidates(Pkg,AutoInst, Depth, FromUser);
}
bool pkgDepCache::IsInstallOkMultiArchSameVersionSynced(PkgIterator const &Pkg,
bool const /*AutoInst*/, unsigned long const Depth, bool const FromUser)
{
if (FromUser == true) // as always: user is always right
return true;
// if we have checked before and it was okay, it will still be okay
if (PkgState[Pkg->ID].Mode == ModeInstall &&
PkgState[Pkg->ID].InstallVer == PkgState[Pkg->ID].CandidateVer)
return true;
// ignore packages with none-M-A:same candidates
VerIterator const CandVer = PkgState[Pkg->ID].CandidateVerIter(*this);
if (unlikely(CandVer.end() == true) || CandVer == Pkg.CurrentVer() ||
(CandVer->MultiArch & pkgCache::Version::Same) != pkgCache::Version::Same)
return true;
GrpIterator const Grp = Pkg.Group();
for (PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
{
// not installed or self-check: fine by definition
if (P->CurrentVer == 0 || P == Pkg)
continue;
// not having a candidate or being in sync
// (simple string-compare as stuff like '1' == '0:1-0' can't happen here)
VerIterator CV = PkgState[P->ID].CandidateVerIter(*this);
if (CV.end() == true || strcmp(Pkg.CandVersion(), CV.VerStr()) == 0)
continue;
// packages losing M-A:same can be out-of-sync
if ((CV->MultiArch & pkgCache::Version::Same) != pkgCache::Version::Same)
continue;
// not downloadable means the package is obsolete, so allow out-of-sync
if (CV.Downloadable() == false)
continue;
PkgState[Pkg->ID].iFlags |= AutoKept;
if (unlikely(DebugMarker == true))
std::clog << OutputInDepth(Depth) << "Ignore MarkInstall of " << Pkg
<< " as it is not in sync with its M-A:same sibling " << P
<< " (" << Pkg.CandVersion() << " != " << CV.VerStr() << ")" << std::endl;
return false;
}
return true;
}
bool pkgDepCache::IsInstallOkDependenciesSatisfiableByCandidates(PkgIterator const &Pkg,
bool const AutoInst, unsigned long const Depth, bool const /*FromUser*/)
{
if (AutoInst == false)
return true;
VerIterator const CandVer = PkgState[Pkg->ID].CandidateVerIter(*this);
if (unlikely(CandVer.end() == true) || CandVer == Pkg.CurrentVer())
return true;
for (DepIterator Dep = CandVer.DependsList(); Dep.end() != true;)
{
// Grok or groups
DepIterator Start = Dep;
bool Result = true;
unsigned Ors = 0;
for (bool LastOR = true; Dep.end() == false && LastOR == true; ++Dep, ++Ors)
{
LastOR = (Dep->CompareOp & Dep::Or) == Dep::Or;
if ((DepState[Dep->ID] & DepInstall) == DepInstall)
Result = false;
}
if (Start.IsCritical() == false || Start.IsNegative() == true || Result == false)
continue;
/* If we are in an or group locate the first or that can succeed.
We have already cached this… */
for (; Ors > 1 && (DepState[Start->ID] & DepCVer) != DepCVer; --Ors)
++Start;
if (Ors == 1 && (DepState[Start->ID] &DepCVer) != DepCVer)
{
if (DebugAutoInstall == true)
std::clog << OutputInDepth(Depth) << Start << " can't be satisfied!" << std::endl;
// the dependency is critical, but can't be installed, so discard the candidate
// as the problemresolver will trip over it otherwise trying to install it (#735967)
if (Pkg->CurrentVer != 0 && (PkgState[Pkg->ID].iFlags & Protected) != Protected)
SetCandidateVersion(Pkg.CurrentVer());
return false;
}
}
return true;
}
/*}}}*/
// DepCache::SetReInstall - Set the reinstallation flag /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
{
if (unlikely(Pkg.end() == true))
return;
APT::PackageList pkglist;
if (Pkg->CurrentVer != 0 &&
(Pkg.CurrentVer()-> MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
{
pkgCache::GrpIterator Grp = Pkg.Group();
for (pkgCache::PkgIterator P = Grp.PackageList(); P.end() == false; P = Grp.NextPkg(P))
{
if (P->CurrentVer != 0)
pkglist.insert(P);
}
}
else
pkglist.insert(Pkg);
ActionGroup group(*this);
for (APT::PackageList::const_iterator Pkg = pkglist.begin(); Pkg != pkglist.end(); ++Pkg)
{
RemoveSizes(Pkg);
RemoveStates(Pkg);
StateCache &P = PkgState[Pkg->ID];
if (To == true)
P.iFlags |= ReInstall;
else
P.iFlags &= ~ReInstall;
AddStates(Pkg);
AddSizes(Pkg);
}
}
/*}}}*/
// DepCache::SetCandidateVersion - Change the candidate version /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgDepCache::SetCandidateVersion(VerIterator TargetVer)
{
pkgCache::PkgIterator Pkg = TargetVer.ParentPkg();
StateCache &P = PkgState[Pkg->ID];
if (P.CandidateVer == TargetVer)
return;
ActionGroup group(*this);
RemoveSizes(Pkg);
RemoveStates(Pkg);
if (P.CandidateVer == P.InstallVer && P.Install() == true)
P.InstallVer = (Version *)TargetVer;
P.CandidateVer = (Version *)TargetVer;
P.Update(Pkg,*this);
AddStates(Pkg);
Update(Pkg);
AddSizes(Pkg);
}
/*}}}*/
// DepCache::SetCandidateRelease - Change the candidate version /*{{{*/
// ---------------------------------------------------------------------
/* changes the candidate of a package and walks over all its dependencies
to check if it needs to change the candidate of the dependency, too,
to reach a installable versionstate */
bool pkgDepCache::SetCandidateRelease(pkgCache::VerIterator TargetVer,
std::string const &TargetRel)
{
std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > Changed;
return SetCandidateRelease(TargetVer, TargetRel, Changed);
}
bool pkgDepCache::SetCandidateRelease(pkgCache::VerIterator TargetVer,
std::string const &TargetRel,
std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> > &Changed)
{
ActionGroup group(*this);
SetCandidateVersion(TargetVer);
if (TargetRel == "installed" || TargetRel == "candidate") // both doesn't make sense in this context
return true;
pkgVersionMatch Match(TargetRel, pkgVersionMatch::Release);
// save the position of the last element we will not undo - if we have to
std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::iterator newChanged = --(Changed.end());
for (pkgCache::DepIterator D = TargetVer.DependsList(); D.end() == false; ++D)
{
if (D->Type != pkgCache::Dep::PreDepends && D->Type != pkgCache::Dep::Depends &&
((D->Type != pkgCache::Dep::Recommends && D->Type != pkgCache::Dep::Suggests) ||
IsImportantDep(D) == false))
continue;
// walk over an or-group and check if we need to do anything
// for simpilicity no or-group is handled as a or-group including one dependency
pkgCache::DepIterator Start = D;
bool itsFine = false;
for (bool stillOr = true; stillOr == true; ++Start)
{
stillOr = (Start->CompareOp & Dep::Or) == Dep::Or;
pkgCache::PkgIterator const P = Start.TargetPkg();
// virtual packages can't be a solution
if (P.end() == true || (P->ProvidesList == 0 && P->VersionList == 0))
continue;
pkgCache::VerIterator const Cand = PkgState[P->ID].CandidateVerIter(*this);
// no versioned dependency - but is it installable?
if (Start.TargetVer() == 0 || Start.TargetVer()[0] == '\0')
{
// Check if one of the providers is installable
if (P->ProvidesList != 0)
{
pkgCache::PrvIterator Prv = P.ProvidesList();
for (; Prv.end() == false; ++Prv)
{
pkgCache::VerIterator const C = PkgState[Prv.OwnerPkg()->ID].CandidateVerIter(*this);
if (C.end() == true || C != Prv.OwnerVer() ||
(VersionState(C.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) != DepCandMin)
continue;
break;
}
if (Prv.end() == true)
continue;
}
// no providers, so check if we have an installable candidate version
else if (Cand.end() == true ||
(VersionState(Cand.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) != DepCandMin)
continue;
itsFine = true;
break;
}
if (Cand.end() == true)
continue;
// check if the current candidate is enough for the versioned dependency - and installable?
if (Start.IsSatisfied(Cand) == true &&
(VersionState(Cand.DependsList(), DepInstall, DepCandMin, DepCandPolicy) & DepCandMin) == DepCandMin)
{
itsFine = true;
break;
}
}
if (itsFine == true) {
// something in the or-group was fine, skip all other members
for (; (D->CompareOp & Dep::Or) == Dep::Or; ++D);
continue;
}
// walk again over the or-group and check each if a candidate switch would help
itsFine = false;
for (bool stillOr = true; stillOr == true; ++D)
{
stillOr = (D->CompareOp & Dep::Or) == Dep::Or;
// changing candidate will not help if the dependency is not versioned
if (D.TargetVer() == 0 || D.TargetVer()[0] == '\0')
{
if (stillOr == true)
continue;
break;
}
pkgCache::VerIterator V;
if (TargetRel == "newest")
V = D.TargetPkg().VersionList();
else
V = Match.Find(D.TargetPkg());
// check if the version from this release could satisfy the dependency
if (V.end() == true || D.IsSatisfied(V) == false)
{
if (stillOr == true)
continue;
break;
}
pkgCache::VerIterator oldCand = PkgState[D.TargetPkg()->ID].CandidateVerIter(*this);
if (V == oldCand)
{
// Do we already touched this Version? If so, their versioned dependencies are okay, no need to check again
for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = Changed.begin();
c != Changed.end(); ++c)
{
if (c->first->ParentPkg != V->ParentPkg)
continue;
itsFine = true;
break;
}
}
if (itsFine == false)
{
// change the candidate
Changed.push_back(make_pair(V, TargetVer));
if (SetCandidateRelease(V, TargetRel, Changed) == false)
{
if (stillOr == false)
break;
// undo the candidate changing
SetCandidateVersion(oldCand);
Changed.pop_back();
continue;
}
itsFine = true;
}
// something in the or-group was fine, skip all other members
for (; (D->CompareOp & Dep::Or) == Dep::Or; ++D);
break;
}
if (itsFine == false && (D->Type == pkgCache::Dep::PreDepends || D->Type == pkgCache::Dep::Depends))
{
// undo all changes which aren't lead to a solution
for (std::list<std::pair<pkgCache::VerIterator, pkgCache::VerIterator> >::const_iterator c = ++newChanged;
c != Changed.end(); ++c)
SetCandidateVersion(c->first);
Changed.erase(newChanged, Changed.end());
return false;
}
}
return true;
}
/*}}}*/
// DepCache::MarkAuto - set the Auto flag for a package /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgDepCache::MarkAuto(const PkgIterator &Pkg, bool Auto)
{
StateCache &state = PkgState[Pkg->ID];
ActionGroup group(*this);
if(Auto)
state.Flags |= Flag::Auto;
else
state.Flags &= ~Flag::Auto;
}
/*}}}*/
// StateCache::Update - Compute the various static display things /*{{{*/
// ---------------------------------------------------------------------
/* This is called whenever the Candidate version changes. */
void pkgDepCache::StateCache::Update(PkgIterator Pkg,pkgCache &Cache)
{
// Some info
VerIterator Ver = CandidateVerIter(Cache);
// Use a null string or the version string
if (Ver.end() == true)
CandVersion = "";
else
CandVersion = Ver.VerStr();
// Find the current version
CurVersion = "";
if (Pkg->CurrentVer != 0)
CurVersion = Pkg.CurrentVer().VerStr();
// Strip off the epochs for display
CurVersion = StripEpoch(CurVersion);
CandVersion = StripEpoch(CandVersion);
// Figure out if its up or down or equal
Status = Ver.CompareVer(Pkg.CurrentVer());
if (Pkg->CurrentVer == 0 || Pkg->VersionList == 0 || CandidateVer == 0)
Status = 2;
}
/*}}}*/
// StateCache::StripEpoch - Remove the epoch specifier from the version /*{{{*/
// ---------------------------------------------------------------------
/* */
const char *pkgDepCache::StateCache::StripEpoch(const char *Ver)
{
if (Ver == 0)
return 0;
// Strip any epoch
for (const char *I = Ver; *I != 0; I++)
if (*I == ':')
return I + 1;
return Ver;
}
/*}}}*/
// Policy::GetCandidateVer - Returns the Candidate install version /*{{{*/
// ---------------------------------------------------------------------
/* The default just returns the highest available version that is not
a source and automatic. */
pkgCache::VerIterator pkgDepCache::Policy::GetCandidateVer(PkgIterator const &Pkg)
{
/* Not source/not automatic versions cannot be a candidate version
unless they are already installed */
VerIterator Last;
for (VerIterator I = Pkg.VersionList(); I.end() == false; ++I)
{
if (Pkg.CurrentVer() == I)
return I;
for (VerFileIterator J = I.FileList(); J.end() == false; ++J)
{
if (J.File().Flagged(Flag::NotSource))
continue;
/* Stash the highest version of a not-automatic source, we use it
if there is nothing better */
if (J.File().Flagged(Flag::NotAutomatic) ||
J.File().Flagged(Flag::ButAutomaticUpgrades))
{
if (Last.end() == true)
Last = I;
continue;
}
return I;
}
}
return Last;
}
/*}}}*/
// Policy::IsImportantDep - True if the dependency is important /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgDepCache::Policy::IsImportantDep(DepIterator const &Dep)
{
if(Dep.IsCritical())
return true;
else if(Dep->Type == pkgCache::Dep::Recommends)
{
if (InstallRecommends)
return true;
// we suport a special mode to only install-recommends for certain
// sections
// FIXME: this is a meant as a temporarly solution until the
// recommends are cleaned up
const char *sec = Dep.ParentVer().Section();
if (sec && ConfigValueInSubTree("APT::Install-Recommends-Sections", sec))
return true;
}
else if(Dep->Type == pkgCache::Dep::Suggests)
return InstallSuggests;
return false;
}
/*}}}*/
// Policy::GetPriority - Get the priority of the package pin /*{{{*/
APT_CONST signed short pkgDepCache::Policy::GetPriority(pkgCache::PkgIterator const &/*Pkg*/)
{ return 0; }
APT_CONST signed short pkgDepCache::Policy::GetPriority(pkgCache::PkgFileIterator const &/*File*/)
{ return 0; }
/*}}}*/
pkgDepCache::InRootSetFunc *pkgDepCache::GetRootSetFunc() /*{{{*/
{
DefaultRootSetFunc *f = new DefaultRootSetFunc;
if(f->wasConstructedSuccessfully())
return f;
else
{
delete f;
return NULL;
}
}
/*}}}*/
bool pkgDepCache::MarkFollowsRecommends()
{
return _config->FindB("APT::AutoRemove::RecommendsImportant", true);
}
bool pkgDepCache::MarkFollowsSuggests()
{
return _config->FindB("APT::AutoRemove::SuggestsImportant", true);
}
// pkgDepCache::MarkRequired - the main mark algorithm /*{{{*/
bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
{
if (_config->Find("APT::Solver", "internal") != "internal")
return true;
bool follow_recommends;
bool follow_suggests;
bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
// init the states
for(PkgIterator p = PkgBegin(); !p.end(); ++p)
{
PkgState[p->ID].Marked = false;
PkgState[p->ID].Garbage = false;
// debug output
if(debug_autoremove && PkgState[p->ID].Flags & Flag::Auto)
std::clog << "AutoDep: " << p.FullName() << std::endl;
}
// init vars
follow_recommends = MarkFollowsRecommends();
follow_suggests = MarkFollowsSuggests();
// do the mark part, this is the core bit of the algorithm
for(PkgIterator p = PkgBegin(); !p.end(); ++p)
{
if(!(PkgState[p->ID].Flags & Flag::Auto) ||
(p->Flags & Flag::Essential) ||
(p->Flags & Flag::Important) ||
userFunc.InRootSet(p) ||
// be nice even then a required package violates the policy (#583517)
// and do the full mark process also for required packages
(p.CurrentVer().end() != true &&
p.CurrentVer()->Priority == pkgCache::State::Required) ||
// packages which can't be changed (like holds) can't be garbage
(IsModeChangeOk(ModeGarbage, p, 0, false) == false))
{
// the package is installed (and set to keep)
if(PkgState[p->ID].Keep() && !p.CurrentVer().end())
MarkPackage(p, p.CurrentVer(),
follow_recommends, follow_suggests);
// the package is to be installed
else if(PkgState[p->ID].Install())
MarkPackage(p, PkgState[p->ID].InstVerIter(*this),
follow_recommends, follow_suggests);
}
}
return true;
}
/*}}}*/
// MarkPackage - mark a single package in Mark-and-Sweep /*{{{*/
void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
const pkgCache::VerIterator &ver,
bool const &follow_recommends,
bool const &follow_suggests)
{
pkgDepCache::StateCache &state = PkgState[pkg->ID];
// if we are marked already we are done
if(state.Marked)
return;
VerIterator const currver = pkg.CurrentVer();
VerIterator const instver = state.InstVerIter(*this);
#if 0
VerIterator const candver = state.CandidateVerIter(*this);
// If a package was garbage-collected but is now being marked, we
// should re-select it
// For cases when a pkg is set to upgrade and this trigger the
// removal of a no-longer used dependency. if the pkg is set to
// keep again later it will result in broken deps
if(state.Delete() && state.RemoveReason = Unused)
{
if(ver==candver)
mark_install(pkg, false, false, NULL);
else if(ver==pkg.CurrentVer())
MarkKeep(pkg, false, false);
instver=state.InstVerIter(*this);
}
#endif
// For packages that are not going to be removed, ignore versions
// other than the InstVer. For packages that are going to be
// removed, ignore versions other than the current version.
if(!(ver == instver && !instver.end()) &&
!(ver == currver && instver.end() && !ver.end()))
return;
bool const debug_autoremove = _config->FindB("Debug::pkgAutoRemove", false);
if(debug_autoremove)
{
std::clog << "Marking: " << pkg.FullName();
if(!ver.end())
std::clog << " " << ver.VerStr();
if(!currver.end())
std::clog << ", Curr=" << currver.VerStr();
if(!instver.end())
std::clog << ", Inst=" << instver.VerStr();
std::clog << std::endl;
}
state.Marked=true;
if(ver.end() == true)
return;
for(DepIterator d = ver.DependsList(); !d.end(); ++d)
{
if(d->Type == Dep::Depends ||
d->Type == Dep::PreDepends ||
(follow_recommends &&
d->Type == Dep::Recommends) ||
(follow_suggests &&
d->Type == Dep::Suggests))
{
// Try all versions of this package.
for(VerIterator V = d.TargetPkg().VersionList();
!V.end(); ++V)
{
if(d.IsSatisfied(V))
{
if(debug_autoremove)
{
std::clog << "Following dep: " << d.ParentPkg().FullName()
<< " " << d.ParentVer().VerStr() << " "
<< d.DepType() << " " << d.TargetPkg().FullName();
if((d->CompareOp & ~pkgCache::Dep::Or) != pkgCache::Dep::NoOp)
{
std::clog << " (" << d.CompType() << " "
<< d.TargetVer() << ")";
}
std::clog << std::endl;
}
MarkPackage(V.ParentPkg(), V,
follow_recommends, follow_suggests);
}
}
// Now try virtual packages
for(PrvIterator prv=d.TargetPkg().ProvidesList();
!prv.end(); ++prv)
{
if(d.IsSatisfied(prv))
{
if(debug_autoremove)
{
std::clog << "Following dep: " << d.ParentPkg().FullName() << " "
<< d.ParentVer().VerStr() << " "
<< d.DepType() << " " << d.TargetPkg().FullName() << " ";
if((d->CompareOp & ~pkgCache::Dep::Or) != pkgCache::Dep::NoOp)
{
std::clog << " (" << d.CompType() << " "
<< d.TargetVer() << ")";
}
std::clog << ", provided by "
<< prv.OwnerPkg().FullName() << " "
<< prv.OwnerVer().VerStr()
<< std::endl;
}
MarkPackage(prv.OwnerPkg(), prv.OwnerVer(),
follow_recommends, follow_suggests);
}
}
}
}
}
/*}}}*/
bool pkgDepCache::Sweep() /*{{{*/
{
bool debug_autoremove = _config->FindB("Debug::pkgAutoRemove",false);
// do the sweep
for(PkgIterator p=PkgBegin(); !p.end(); ++p)
{
StateCache &state=PkgState[p->ID];
// skip required packages
if (!p.CurrentVer().end() &&
(p.CurrentVer()->Priority == pkgCache::State::Required))
continue;
// if it is not marked and it is installed, it's garbage
if(!state.Marked && (!p.CurrentVer().end() || state.Install()))
{
state.Garbage=true;
if(debug_autoremove)
std::clog << "Garbage: " << p.FullName() << std::endl;
}
}
return true;
}
/*}}}*/
// DepCache::MarkAndSweep /*{{{*/
bool pkgDepCache::MarkAndSweep(InRootSetFunc &rootFunc)
{
return MarkRequired(rootFunc) && Sweep();
}
bool pkgDepCache::MarkAndSweep()
{
std::auto_ptr<InRootSetFunc> f(GetRootSetFunc());
if(f.get() != NULL)
return MarkAndSweep(*f.get());
else
return false;
}
/*}}}*/