if (Cache.VS().CheckDep(Ver,D->CompareOp,D.TargetVer()) == false)
continue;
- if (EarlyRemove(D.ParentPkg()) == false)
+ if (EarlyRemove(D.ParentPkg(), &D) == false)
return _error->Error("Reverse conflicts early remove for package '%s' failed",
Pkg.FullName().c_str());
}
return true;
}
/*}}}*/
+// PM::NonLoopingSmart - helper to avoid loops while calling Smart methods /*{{{*/
+// -----------------------------------------------------------------------
+/* ensures that a loop of the form A depends B, B depends A (and similar)
+ is not leading us down into infinite recursion segfault land */
+bool pkgPackageManager::NonLoopingSmart(SmartAction const action, pkgCache::PkgIterator &Pkg,
+ pkgCache::PkgIterator DepPkg, int const Depth, bool const PkgLoop,
+ bool * const Bad, bool * const Changed)
+{
+ if (PkgLoop == false)
+ List->Flag(Pkg,pkgOrderList::Loop);
+ bool success = false;
+ switch(action)
+ {
+ case UNPACK_IMMEDIATE: success = SmartUnPack(DepPkg, true, Depth + 1); break;
+ case UNPACK: success = SmartUnPack(DepPkg, false, Depth + 1); break;
+ case CONFIGURE: success = SmartConfigure(DepPkg, Depth + 1); break;
+ }
+ if (PkgLoop == false)
+ List->RmFlag(Pkg,pkgOrderList::Loop);
+
+ if (success == false)
+ return false;
+
+ if (Bad != NULL)
+ *Bad = false;
+ if (Changed != NULL && List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
+ *Changed = true;
+ return true;
+}
+ /*}}}*/
// PM::SmartConfigure - Perform immediate configuration of the pkg /*{{{*/
// ---------------------------------------------------------------------
/* This function tries to put the system in a state where Pkg can be configured.
- This involves checking each of Pkg's dependanies and unpacking and
- configuring packages where needed.
-
- Note on failure: This method can fail, without causing any problems.
- This can happen when using Immediate-Configure-All, SmartUnPack may call
- SmartConfigure, it may fail because of a complex dependency situation, but
- a error will only be reported if ConfigureAll fails. This is why some of the
- messages this function reports on failure (return false;) as just warnings
- only shown when debuging*/
+ This involves checking each of Pkg's dependencies and unpacking and
+ configuring packages where needed. */
bool pkgPackageManager::SmartConfigure(PkgIterator Pkg, int const Depth)
{
// If this is true, only check and correct and dependencies without the Loop flag
}
VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
-
- /* Because of the ordered list, most dependencies should be unpacked,
- however if there is a loop (A depends on B, B depends on A) this will not
+
+ /* Because of the ordered list, most dependencies should be unpacked,
+ however if there is a loop (A depends on B, B depends on A) this will not
be the case, so check for dependencies before configuring. */
bool Bad = false, Changed = false;
const unsigned int max_loops = _config->FindI("APT::pkgPackageManager::MaxLoopCount", 5000);
if (Debug)
std::clog << OutputInDepth(Depth) << "Package " << Pkg << " loops in SmartConfigure" << std::endl;
Bad = false;
- break;
}
else
{
if (Debug)
clog << OutputInDepth(Depth) << "Unpacking " << DepPkg.FullName() << " to avoid loop " << Cur << endl;
- if (PkgLoop == false)
- List->Flag(Pkg,pkgOrderList::Loop);
- if (SmartUnPack(DepPkg, true, Depth + 1) == false)
+ if (NonLoopingSmart(UNPACK_IMMEDIATE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
return false;
- Bad = false;
- if (List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
- Changed = true;
- if (PkgLoop == false)
- List->RmFlag(Pkg,pkgOrderList::Loop);
- if (Bad == false)
- break;
}
+ break;
}
if (Cur == End || Bad == false)
Bad = false;
break;
}
- /* Check for a loop to prevent one forming
- If A depends on B and B depends on A, SmartConfigure will
- just hop between them if this is not checked. Dont remove the
- loop flag after finishing however as loop is already set.
- This means that there is another SmartConfigure call for this
- package and it will remove the loop flag */
- if (PkgLoop == false)
- List->Flag(Pkg,pkgOrderList::Loop);
- if (SmartConfigure(DepPkg, Depth + 1) == false)
+ if (Debug)
+ std::clog << OutputInDepth(Depth) << "Configure already unpacked " << DepPkg << std::endl;
+ if (NonLoopingSmart(CONFIGURE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
return false;
- Bad = false;
- if (List->IsFlag(DepPkg,pkgOrderList::Loop) == false)
- Changed = true;
- if (PkgLoop == false)
- List->RmFlag(Pkg,pkgOrderList::Loop);
break;
+
}
else if (List->IsFlag(DepPkg,pkgOrderList::Configured))
{
if (i++ > max_loops)
return _error->Error("Internal error: MaxLoopCount reached in SmartUnPack (2) for %s, aborting", Pkg.FullName().c_str());
} while (Changed == true);
-
+
if (Bad == true)
return _error->Error(_("Could not configure '%s'. "),Pkg.FullName().c_str());
-
+
if (PkgLoop) return true;
static std::string const conf = _config->Find("PackageManager::Configure","all");
static bool const ConfigurePkgs = (conf == "all" || conf == "smart");
- if (List->IsFlag(Pkg,pkgOrderList::Configured))
+ if (List->IsFlag(Pkg,pkgOrderList::Configured))
return _error->Error("Internal configure error on '%s'.", Pkg.FullName().c_str());
if (ConfigurePkgs == true && Configure(Pkg) == false)
// ---------------------------------------------------------------------
/* This is called to deal with conflicts arising from unpacking */
bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
+{
+ return EarlyRemove(Pkg, NULL);
+}
+bool pkgPackageManager::EarlyRemove(PkgIterator Pkg, DepIterator const * const Dep)
{
if (List->IsNow(Pkg) == false)
return true;
-
+
// Already removed it
if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
return true;
-
+
// Woops, it will not be re-installed!
if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
return false;
+ // these breaks on M-A:same packages can be dealt with. They 'loop' by design
+ if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks && Dep->IsMultiArchImplicit() == true)
+ return true;
+
// Essential packages get special treatment
bool IsEssential = false;
if ((Pkg->Flags & pkgCache::Flag::Essential) != 0 ||
(Pkg->Flags & pkgCache::Flag::Important) != 0)
IsEssential = true;
- /* Check for packages that are the dependents of essential packages and
+ /* Check for packages that are the dependents of essential packages and
promote them too */
if (Pkg->CurrentVer != 0)
{
- for (DepIterator D = Pkg.RevDependsList(); D.end() == false &&
+ for (pkgCache::DepIterator D = Pkg.RevDependsList(); D.end() == false &&
IsEssential == false; ++D)
if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
if ((D.ParentPkg()->Flags & pkgCache::Flag::Essential) != 0 ||
"but if you really want to do it, activate the "
"APT::Force-LoopBreak option."),Pkg.FullName().c_str());
}
-
+ // dpkg will auto-deconfigure it, no need for the big remove hammer
+ else if (Dep != NULL && (*Dep)->Type == pkgCache::Dep::DpkgBreaks)
+ return true;
+
bool Res = SmartRemove(Pkg);
if (Cache[Pkg].Delete() == false)
List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
-
+
return Res;
}
/*}}}*/
VerIterator const instVer = Cache[Pkg].InstVerIter(Cache);
- /* PreUnpack Checks: This loop checks and attempts to rectify and problems that would prevent the package being unpacked.
+ /* PreUnpack Checks: This loop checks and attempts to rectify any problems that would prevent the package being unpacked.
It addresses: PreDepends, Conflicts, Obsoletes and Breaks (DpkgBreaks). Any resolutions that do not require it should
avoid configuration (calling SmartUnpack with Immediate=true), this is because when unpacking some packages with
- complex dependency structures, trying to configure some packages while breaking the loops can complicate things .
+ complex dependency structures, trying to configure some packages while breaking the loops can complicate things.
This will be either dealt with if the package is configured as a dependency of Pkg (if and when Pkg is configured),
or by the ConfigureAll call at the end of the for loop in OrderInstall. */
- bool Changed = false;
+ bool SomethingBad = false, Changed = false;
+ bool couldBeTemporaryRemoved = Depth != 0 && List->IsFlag(Pkg,pkgOrderList::Removed) == false;
const unsigned int max_loops = _config->FindI("APT::pkgPackageManager::MaxLoopCount", 5000);
unsigned int i = 0;
do
for (Version **I = VList; *I != 0; ++I)
{
VerIterator Ver(Cache,*I);
- PkgIterator Pkg = Ver.ParentPkg();
+ PkgIterator DepPkg = Ver.ParentPkg();
// Not the install version
- if (Cache[Pkg].InstallVer != *I ||
- (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
+ if (Cache[DepPkg].InstallVer != *I ||
+ (Cache[DepPkg].Keep() == true && DepPkg.State() == PkgIterator::NeedsNothing))
continue;
- if (List->IsFlag(Pkg,pkgOrderList::Configured))
+ if (List->IsFlag(DepPkg,pkgOrderList::Configured))
{
Bad = false;
break;
}
// check if it needs unpack or if if configure is enough
- if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
+ if (List->IsFlag(DepPkg,pkgOrderList::UnPacked) == false)
{
if (Debug)
- clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << Pkg.FullName() << endl;
- // SmartUnpack with the ImmediateFlag to ensure its really ready
- if (SmartUnPack(Pkg, true, Depth + 1) == false)
+ clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << DepPkg.FullName() << endl;
+ if (NonLoopingSmart(UNPACK_IMMEDIATE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
return false;
- Bad = false;
- if (List->IsFlag(Pkg,pkgOrderList::Loop) == false)
- Changed = true;
- break;
}
else
{
if (Debug)
- clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << Pkg.FullName() << endl;
- if (SmartConfigure(Pkg, Depth + 1) == false)
+ clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << DepPkg.FullName() << endl;
+ if (NonLoopingSmart(CONFIGURE, Pkg, DepPkg, Depth, PkgLoop, &Bad, &Changed) == false)
return false;
- Bad = false;
- if (List->IsFlag(Pkg,pkgOrderList::Loop) == false)
- Changed = true;
- break;
}
+ break;
}
}
if (Bad == true)
- {
- if (Start == End)
- return _error->Error("Couldn't configure pre-depend %s for %s, "
- "probably a dependency cycle.",
- End.TargetPkg().FullName().c_str(),Pkg.FullName().c_str());
- }
- else
- continue;
+ SomethingBad = true;
}
else if (End->Type == pkgCache::Dep::Conflicts ||
- End->Type == pkgCache::Dep::Obsoletes)
+ End->Type == pkgCache::Dep::Obsoletes ||
+ End->Type == pkgCache::Dep::DpkgBreaks)
{
- /* Look for conflicts. Two packages that are both in the install
- state cannot conflict so we don't check.. */
SPtrArray<Version *> VList = End.AllTargets();
- for (Version **I = VList; *I != 0; I++)
+ for (Version **I = VList; *I != 0; ++I)
{
VerIterator Ver(Cache,*I);
PkgIterator ConflictPkg = Ver.ParentPkg();
- VerIterator InstallVer(Cache,Cache[ConflictPkg].InstallVer);
+ if (ConflictPkg.CurrentVer() != Ver)
+ {
+ if (Debug)
+ std::clog << OutputInDepth(Depth) << "Ignore not-installed version " << Ver.VerStr() << " of " << ConflictPkg.FullName() << " for " << End << std::endl;
+ continue;
+ }
+
+ if (List->IsNow(ConflictPkg) == false)
+ {
+ if (Debug)
+ std::clog << OutputInDepth(Depth) << "Ignore already dealt-with version " << Ver.VerStr() << " of " << ConflictPkg.FullName() << " for " << End << std::endl;
+ continue;
+ }
- // See if the current version is conflicting
- if (ConflictPkg.CurrentVer() == Ver && List->IsNow(ConflictPkg))
+ if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == true)
{
if (Debug)
- clog << OutputInDepth(Depth) << Pkg.FullName() << " conflicts with " << ConflictPkg.FullName() << endl;
- /* If a loop is not present or has not yet been detected, attempt to unpack packages
- to resolve this conflict. If there is a loop present, remove packages to resolve this conflict */
- if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) == false)
+ clog << OutputInDepth(Depth) << "Ignoring " << End << " as " << ConflictPkg.FullName() << "was temporarily removed" << endl;
+ continue;
+ }
+
+ if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) && PkgLoop)
+ {
+ if (End->Type == pkgCache::Dep::DpkgBreaks && End.IsMultiArchImplicit() == true)
{
- if (Cache[ConflictPkg].Keep() == 0 && Cache[ConflictPkg].InstallVer != 0)
- {
- if (Debug)
- clog << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to prevent conflict" << endl;
- List->Flag(Pkg,pkgOrderList::Loop);
- if (SmartUnPack(ConflictPkg,false, Depth + 1) == false)
- return false;
- if (List->IsFlag(ConflictPkg,pkgOrderList::Loop) == false)
- Changed = true;
- // Remove loop to allow it to be used later if needed
- List->RmFlag(Pkg,pkgOrderList::Loop);
- }
- else if (EarlyRemove(ConflictPkg) == false)
- return _error->Error("Internal Error, Could not early remove %s (1)",ConflictPkg.FullName().c_str());
+ if (Debug)
+ clog << OutputInDepth(Depth) << "Because dependency is MultiArchImplicit we ignored looping on: " << ConflictPkg << endl;
+ continue;
}
- else if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == false)
+ if (Debug)
{
- if (Debug)
+ if (End->Type == pkgCache::Dep::DpkgBreaks)
+ clog << OutputInDepth(Depth) << "Because of breaks knot, deconfigure " << ConflictPkg.FullName() << " temporarily" << endl;
+ else
clog << OutputInDepth(Depth) << "Because of conflict knot, removing " << ConflictPkg.FullName() << " temporarily" << endl;
- if (EarlyRemove(ConflictPkg) == false)
- return _error->Error("Internal Error, Could not early remove %s (2)",ConflictPkg.FullName().c_str());
}
- }
- }
- }
- else if (End->Type == pkgCache::Dep::DpkgBreaks)
- {
- SPtrArray<Version *> VList = End.AllTargets();
- for (Version **I = VList; *I != 0; ++I)
- {
- VerIterator Ver(Cache,*I);
- PkgIterator BrokenPkg = Ver.ParentPkg();
- if (BrokenPkg.CurrentVer() != Ver)
- {
- if (Debug)
- std::clog << OutputInDepth(Depth) << " Ignore not-installed version " << Ver.VerStr() << " of " << Pkg.FullName() << " for " << End << std::endl;
+ if (EarlyRemove(ConflictPkg, &End) == false)
+ return _error->Error("Internal Error, Could not early remove %s (2)",ConflictPkg.FullName().c_str());
+ SomethingBad = true;
continue;
}
- // Check if it needs to be unpacked
- if (List->IsFlag(BrokenPkg,pkgOrderList::InList) && Cache[BrokenPkg].Delete() == false &&
- List->IsNow(BrokenPkg))
+ if (Cache[ConflictPkg].Delete() == false)
{
- if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) && PkgLoop)
+ if (Debug)
{
- // This dependency has already been dealt with by another SmartUnPack on Pkg
- break;
+ clog << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to avoid " << End;
+ if (PkgLoop == true)
+ clog << " (Looping)";
+ clog << std::endl;
}
- else
+ // we would like to avoid temporary removals and all that at best via a simple unpack
+ _error->PushToStack();
+ if (NonLoopingSmart(UNPACK, Pkg, ConflictPkg, Depth, PkgLoop, NULL, &Changed) == false)
{
- // Found a break, so see if we can unpack the package to avoid it
- // but do not set loop if another SmartUnPack already deals with it
- // Also, avoid it if the package we would unpack pre-depends on this one
- VerIterator InstallVer(Cache,Cache[BrokenPkg].InstallVer);
- bool circle = false;
- for (pkgCache::DepIterator D = InstallVer.DependsList(); D.end() == false; ++D)
+ // but if it fails ignore this failure and look for alternative ways of solving
+ if (Debug)
{
- if (D->Type != pkgCache::Dep::PreDepends)
- continue;
- SPtrArray<Version *> VL = D.AllTargets();
- for (Version **I = VL; *I != 0; ++I)
- {
- VerIterator V(Cache,*I);
- PkgIterator P = V.ParentPkg();
- // we are checking for installation as an easy 'protection' against or-groups and (unchosen) providers
- if (P != Pkg || (P.CurrentVer() != V && Cache[P].InstallVer != V))
- continue;
- circle = true;
- break;
- }
- if (circle == true)
- break;
+ clog << OutputInDepth(Depth) << "Avoidance unpack of " << ConflictPkg.FullName() << " failed for " << End << std::endl;
+ _error->DumpErrors(std::clog);
+ }
+ _error->RevertToStack();
+ // ignorance can only happen if a) one of the offenders is already gone
+ if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == true)
+ {
+ if (Debug)
+ clog << OutputInDepth(Depth) << "But " << ConflictPkg.FullName() << " was temporarily removed in the meantime to satisfy " << End << endl;
}
- if (circle == true)
+ else if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
{
if (Debug)
- clog << OutputInDepth(Depth) << " Avoiding " << End << " avoided as " << BrokenPkg.FullName() << " has a pre-depends on " << Pkg.FullName() << std::endl;
- continue;
+ clog << OutputInDepth(Depth) << "But " << Pkg.FullName() << " was temporarily removed in the meantime to satisfy " << End << endl;
}
+ // or b) we can make one go (removal or dpkg auto-deconfigure)
else
{
if (Debug)
- {
- clog << OutputInDepth(Depth) << " Unpacking " << BrokenPkg.FullName() << " to avoid " << End;
- if (PkgLoop == true)
- clog << " (Looping)";
- clog << std::endl;
- }
- if (PkgLoop == false)
- List->Flag(Pkg,pkgOrderList::Loop);
- if (SmartUnPack(BrokenPkg, false, Depth + 1) == false)
- return false;
- if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) == false)
- Changed = true;
- if (PkgLoop == false)
- List->RmFlag(Pkg,pkgOrderList::Loop);
+ clog << OutputInDepth(Depth) << "So temprorary remove/deconfigure " << ConflictPkg.FullName() << " to satisfy " << End << endl;
+ if (EarlyRemove(ConflictPkg, &End) == false)
+ return _error->Error("Internal Error, Could not early remove %s (2)",ConflictPkg.FullName().c_str());
}
}
+ else
+ _error->MergeWithStack();
}
- // Check if a package needs to be removed
- else if (Cache[BrokenPkg].Delete() == true && List->IsFlag(BrokenPkg,pkgOrderList::Configured) == false)
+ else
{
if (Debug)
- clog << OutputInDepth(Depth) << " Removing " << BrokenPkg.FullName() << " to avoid " << End << endl;
- if (SmartRemove(BrokenPkg) == false)
- return false;
+ clog << OutputInDepth(Depth) << "Removing " << ConflictPkg.FullName() << " now to avoid " << End << endl;
+ // no earlyremove() here as user has already agreed to the permanent removal
+ if (SmartRemove(Pkg) == false)
+ return _error->Error("Internal Error, Could not early remove %s (1)",ConflictPkg.FullName().c_str());
}
}
}
if (i++ > max_loops)
return _error->Error("Internal error: APT::pkgPackageManager::MaxLoopCount reached in SmartConfigure for %s, aborting", Pkg.FullName().c_str());
} while (Changed == true);
-
+
+ if (SomethingBad == true)
+ return _error->Error("Couldn't configure %s, probably a dependency cycle.", Pkg.FullName().c_str());
+
+ if (couldBeTemporaryRemoved == true && List->IsFlag(Pkg,pkgOrderList::Removed) == true)
+ {
+ if (Debug)
+ std::clog << OutputInDepth(Depth) << "Prevent unpack as " << Pkg << " is currently temporarily removed" << std::endl;
+ return true;
+ }
+
// Check for reverse conflicts.
if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
instVer.VerStr()) == false)
if (Immediate == true) {
// Perform immedate configuration of the package.
if (SmartConfigure(Pkg, Depth + 1) == false)
- _error->Warning(_("Could not perform immediate configuration on '%s'. "
+ _error->Error(_("Could not perform immediate configuration on '%s'. "
"Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.FullName().c_str(),2);
}
projects / apt.git / commitdiff
