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.
- It addresses: PreDepends, Conflicts, Obsoletes and Breaks (DpkgBreaks). Any resolutions that do not require it should
+ 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 dependancy 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),
+ complex dependancy 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. */
- for (DepIterator D = instVer.DependsList();
- D.end() == false; )
- {
- // Compute a single dependency element (glob or)
- pkgCache::DepIterator Start;
- pkgCache::DepIterator End;
- D.GlobOr(Start,End);
-
- while (End->Type == pkgCache::Dep::PreDepends)
+ bool Changed = false;
+ do {
+ Changed = false;
+ for (DepIterator D = instVer.DependsList(); D.end() == false; )
{
- if (Debug)
- clog << OutputInDepth(Depth) << "PreDepends order for " << Pkg.FullName() << std::endl;
+ // Compute a single dependency element (glob or)
+ pkgCache::DepIterator Start, End;
+ D.GlobOr(Start,End);
- // Look for possible ok targets.
- SPtrArray<Version *> VList = Start.AllTargets();
- bool Bad = true;
- for (Version **I = VList; *I != 0 && Bad == true; I++)
- {
- VerIterator Ver(Cache,*I);
- PkgIterator Pkg = Ver.ParentPkg();
-
- // See if the current version is ok
- if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
- Pkg.State() == PkgIterator::NeedsNothing)
+ if (End->Type == pkgCache::Dep::PreDepends)
+ {
+ bool Bad = true;
+ if (Debug)
+ clog << OutputInDepth(Depth) << "PreDepends order for " << Pkg.FullName() << std::endl;
+
+ // Look for easy targets: packages that are already okay
+ for (DepIterator Cur = Start; Bad == true; ++Cur)
{
- Bad = false;
- if (Debug)
- clog << OutputInDepth(Depth) << "Found ok package " << Pkg.FullName() << endl;
- continue;
- }
- }
-
- // Look for something that could be configured.
- for (Version **I = VList; *I != 0 && Bad == true; I++)
- {
- VerIterator Ver(Cache,*I);
- PkgIterator Pkg = Ver.ParentPkg();
-
- // Not the install version
- if (Cache[Pkg].InstallVer != *I ||
- (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
- continue;
-
- if (List->IsFlag(Pkg,pkgOrderList::Configured)) {
- Bad = false;
- continue;
+ SPtrArray<Version *> VList = Start.AllTargets();
+ for (Version **I = VList; *I != 0; ++I)
+ {
+ VerIterator Ver(Cache,*I);
+ PkgIterator Pkg = Ver.ParentPkg();
+
+ // See if the current version is ok
+ if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
+ Pkg.State() == PkgIterator::NeedsNothing)
+ {
+ Bad = false;
+ if (Debug)
+ clog << OutputInDepth(Depth) << "Found ok package " << Pkg.FullName() << endl;
+ break;
+ }
+ }
+ if (Cur == End)
+ break;
}
- // check if it needs unpack or if if configure is enough
- if (!List->IsFlag(Pkg,pkgOrderList::UnPacked))
- {
- if (Debug)
- clog << OutputInDepth(Depth) << "Trying to SmartUnpack " << Pkg.FullName() << endl;
- // SmartUnpack with the ImmediateFlag to ensure its really ready
- Bad = !SmartUnPack(Pkg, true, Depth + 1);
- } else {
- if (Debug)
- clog << OutputInDepth(Depth) << "Trying to SmartConfigure " << Pkg.FullName() << endl;
- Bad = !SmartConfigure(Pkg, Depth + 1);
- }
- }
+ // Look for something that could be configured.
+ for (DepIterator Cur = Start; Bad == true; ++Cur)
+ {
+ SPtrArray<Version *> VList = Start.AllTargets();
+ for (Version **I = VList; *I != 0; ++I)
+ {
+ VerIterator Ver(Cache,*I);
+ PkgIterator Pkg = Ver.ParentPkg();
- /* If this or element did not match then continue on to the
- next or element until a matching element is found */
- if (Bad == true)
- {
- // This triggers if someone make a pre-depends/depend loop.
- 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());
- ++Start;
- }
- else
- break;
- }
-
- if (End->Type == pkgCache::Dep::Conflicts ||
- End->Type == pkgCache::Dep::Obsoletes)
- {
- /* 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++)
- {
- VerIterator Ver(Cache,*I);
- PkgIterator ConflictPkg = Ver.ParentPkg();
- VerIterator InstallVer(Cache,Cache[ConflictPkg].InstallVer);
-
- // See if the current version is conflicting
- if (ConflictPkg.CurrentVer() == Ver && List->IsNow(ConflictPkg))
- {
- cout << 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)) {
- if (Cache[ConflictPkg].Keep() == 0 && Cache[ConflictPkg].InstallVer != 0) {
- if (Debug)
- cout << OutputInDepth(Depth) << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to prevent conflict" << endl;
- List->Flag(Pkg,pkgOrderList::Loop);
- SmartUnPack(ConflictPkg,false, Depth + 1);
- // 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",ConflictPkg.FullName().c_str());
- }
- } else {
- if (!List->IsFlag(ConflictPkg,pkgOrderList::Removed)) {
- if (Debug)
- cout << OutputInDepth(Depth) << "Because of conficts knot, removing " << ConflictPkg.FullName() << " to conflict violation" << endl;
- if (EarlyRemove(ConflictPkg) == false)
- return _error->Error("Internal Error, Could not early remove %s",ConflictPkg.FullName().c_str());
- }
+ // Not the install version
+ if (Cache[Pkg].InstallVer != *I ||
+ (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
+ continue;
+
+ if (List->IsFlag(Pkg,pkgOrderList::Configured))
+ {
+ Bad = false;
+ break;
+ }
+
+ // check if it needs unpack or if if configure is enough
+ if (List->IsFlag(Pkg,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) == true)
+ {
+ 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) == true)
+ {
+ Bad = false;
+ if (List->IsFlag(Pkg,pkgOrderList::Loop) == false)
+ Changed = true;
+ 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;
}
- }
-
- // Check for breaks
- if (End->Type == pkgCache::Dep::DpkgBreaks) {
- SPtrArray<Version *> VList = End.AllTargets();
- for (Version **I = VList; *I != 0; I++)
+ else if (End->Type == pkgCache::Dep::Conflicts ||
+ End->Type == pkgCache::Dep::Obsoletes)
{
- VerIterator Ver(Cache,*I);
- PkgIterator BrokenPkg = Ver.ParentPkg();
- if (BrokenPkg.CurrentVer() != Ver)
+ /* 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++)
{
- if (Debug)
- std::clog << OutputInDepth(Depth) << " Ignore not-installed version " << Ver.VerStr() << " of " << Pkg.FullName() << " for " << End << std::endl;
- continue;
- }
+ VerIterator Ver(Cache,*I);
+ PkgIterator ConflictPkg = Ver.ParentPkg();
+ VerIterator InstallVer(Cache,Cache[ConflictPkg].InstallVer);
- // Check if it needs to be unpacked
- if (List->IsFlag(BrokenPkg,pkgOrderList::InList) && Cache[BrokenPkg].Delete() == false &&
- List->IsNow(BrokenPkg)) {
- if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) && PkgLoop) {
- // This dependancy has already been dealt with by another SmartUnPack on Pkg
- break;
- } else {
- // 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
- VerIterator InstallVer(Cache,Cache[BrokenPkg].InstallVer);
- bool circle = false;
- for (pkgCache::DepIterator D = InstallVer.DependsList(); D.end() == false; ++D)
+ // See if the current version is conflicting
+ if (ConflictPkg.CurrentVer() == Ver && List->IsNow(ConflictPkg))
+ {
+ cout << 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)
{
- if (D->Type != pkgCache::Dep::PreDepends)
- continue;
- SPtrArray<Version *> VL = D.AllTargets();
- for (Version **I = VL; *I != 0; ++I)
+ if (Cache[ConflictPkg].Keep() == 0 && Cache[ConflictPkg].InstallVer != 0)
{
- 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->CurrentVer == 0 || P != Pkg || (P.CurrentVer() != V && Cache[P].InstallVer != V))
- continue;
- circle = true;
- break;
+ if (Debug)
+ cout << OutputInDepth(Depth) << OutputInDepth(Depth) << "Unpacking " << ConflictPkg.FullName() << " to prevent conflict" << endl;
+ List->Flag(Pkg,pkgOrderList::Loop);
+ if (SmartUnPack(ConflictPkg,false, Depth + 1) == true)
+ 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);
}
- if (circle == true)
- break;
+ else if (EarlyRemove(ConflictPkg) == false)
+ return _error->Error("Internal Error, Could not early remove %s (1)",ConflictPkg.FullName().c_str());
}
- if (circle == true)
+ else if (List->IsFlag(ConflictPkg,pkgOrderList::Removed) == false)
{
if (Debug)
- cout << OutputInDepth(Depth) << " Avoiding " << End << " avoided as " << BrokenPkg.FullName() << " has a pre-depends on " << Pkg.FullName() << std::endl;
- continue;
+ cout << OutputInDepth(Depth) << "Because of conficts knot, removing " << ConflictPkg.FullName() << " to conflict violation" << 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;
+ continue;
+ }
+
+ // Check if it needs to be unpacked
+ if (List->IsFlag(BrokenPkg,pkgOrderList::InList) && Cache[BrokenPkg].Delete() == false &&
+ List->IsNow(BrokenPkg))
+ {
+ if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) && PkgLoop)
+ {
+ // This dependancy has already been dealt with by another SmartUnPack on Pkg
+ break;
}
else
{
- if (Debug)
+ // 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)
{
- cout << OutputInDepth(Depth) << " Unpacking " << BrokenPkg.FullName() << " to avoid " << End;
- if (PkgLoop == true)
- cout << " (Looping)";
- cout << std::endl;
+ 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->CurrentVer == 0 || P != Pkg || (P.CurrentVer() != V && Cache[P].InstallVer != V))
+ continue;
+ circle = true;
+ break;
+ }
+ if (circle == true)
+ break;
+ }
+ if (circle == true)
+ {
+ if (Debug)
+ cout << OutputInDepth(Depth) << " Avoiding " << End << " avoided as " << BrokenPkg.FullName() << " has a pre-depends on " << Pkg.FullName() << std::endl;
+ continue;
+ }
+ else
+ {
+ if (Debug)
+ {
+ cout << OutputInDepth(Depth) << " Unpacking " << BrokenPkg.FullName() << " to avoid " << End;
+ if (PkgLoop == true)
+ cout << " (Looping)";
+ cout << std::endl;
+ }
+ if (PkgLoop == false)
+ List->Flag(Pkg,pkgOrderList::Loop);
+ if (SmartUnPack(BrokenPkg, false, Depth + 1) == true)
+ {
+ if (List->IsFlag(BrokenPkg,pkgOrderList::Loop) == false)
+ Changed = true;
+ }
+ if (PkgLoop == false)
+ List->RmFlag(Pkg,pkgOrderList::Loop);
}
- if (PkgLoop == false)
- List->Flag(Pkg,pkgOrderList::Loop);
- SmartUnPack(BrokenPkg, false, Depth + 1);
- if (PkgLoop == false)
- List->RmFlag(Pkg,pkgOrderList::Loop);
}
}
- } else {
// Check if a package needs to be removed
- if (Cache[BrokenPkg].Delete() == true && !List->IsFlag(BrokenPkg,pkgOrderList::Configured))
+ else if (Cache[BrokenPkg].Delete() == true && List->IsFlag(BrokenPkg,pkgOrderList::Configured) == false)
{
if (Debug)
cout << OutputInDepth(Depth) << " Removing " << BrokenPkg.FullName() << " to avoid " << End << endl;
}
}
}
- }
+ } while (Changed == true);
// Check for reverse conflicts.
if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
projects / apt.git / commitdiff
