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-rw-r--r--apt-pkg/depcache.cc446
1 files changed, 428 insertions, 18 deletions
diff --git a/apt-pkg/depcache.cc b/apt-pkg/depcache.cc
index 422343e4a..446bbe402 100644
--- a/apt-pkg/depcache.cc
+++ b/apt-pkg/depcache.cc
@@ -16,15 +16,52 @@
#include <apt-pkg/error.h>
#include <apt-pkg/sptr.h>
#include <apt-pkg/algorithms.h>
+
+#include <apt-pkg/fileutl.h>
#include <apt-pkg/configuration.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/tagfile.h>
+
+#include <iostream>
+#include <sstream>
+#include <set>
+
#include <apti18n.h>
- /*}}}*/
+
+pkgDepCache::ActionGroup::ActionGroup(pkgDepCache &cache) :
+ 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 = false;
+ }
+}
+
+pkgDepCache::ActionGroup::~ActionGroup()
+{
+ release();
+}
// DepCache::pkgDepCache - Constructors /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgDepCache::pkgDepCache(pkgCache *pCache,Policy *Plcy) :
- Cache(pCache), PkgState(0), DepState(0)
+ group_level(0), Cache(pCache), PkgState(0), DepState(0)
{
delLocalPolicy = 0;
LocalPolicy = Plcy;
@@ -47,6 +84,10 @@ pkgDepCache::~pkgDepCache()
/* 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];
@@ -72,7 +113,7 @@ bool pkgDepCache::Init(OpProgress *Prog)
// 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();
@@ -94,11 +135,130 @@ bool pkgDepCache::Init(OpProgress *Prog)
if(Prog != 0)
Prog->Done();
-
+
return true;
}
/*}}}*/
+bool pkgDepCache::readStateFile(OpProgress *Prog)
+{
+ FileFd state_file;
+ string state = _config->FindDir("Dir::State") + "extended_states";
+ if(FileExists(state)) {
+ state_file.Open(state, FileFd::ReadOnly);
+ int file_size = state_file.Size();
+ if(Prog != NULL)
+ Prog->OverallProgress(0, file_size, 1,
+ _("Reading state information"));
+
+ pkgTagFile tagfile(&state_file);
+ pkgTagSection section;
+ int amt=0;
+ while(tagfile.Step(section)) {
+ string pkgname = section.FindS("Package");
+ pkgCache::PkgIterator pkg=Cache->FindPkg(pkgname);
+ // Silently ignore unknown packages and packages with no actual
+ // version.
+ if(!pkg.end() && !pkg.VersionList().end()) {
+ short reason = section.FindI("Auto-Installed", 0);
+ if(reason > 0)
+ PkgState[pkg->ID].Flags |= Flag::Auto;
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::cout << "Auto-Installed : " << pkgname << std::endl;
+ 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)
+{
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::clog << "pkgDepCache::writeStateFile()" << std::endl;
+
+ FileFd StateFile;
+ string state = _config->FindDir("Dir::State") + "extended_states";
+
+ // if it does not exist, create a empty one
+ if(!FileExists(state))
+ {
+ StateFile.Open(state, FileFd::WriteEmpty);
+ StateFile.Close();
+ }
+
+ // open it
+ if(!StateFile.Open(state, FileFd::ReadOnly))
+ return _error->Error(_("Failed to open StateFile %s"),
+ state.c_str());
+
+ FILE *OutFile;
+ string outfile = state + ".tmp";
+ if((OutFile = fopen(outfile.c_str(),"w")) == NULL)
+ return _error->Error(_("Failed to write temporary StateFile %s"),
+ outfile.c_str());
+
+ // first merge with the existing sections
+ pkgTagFile tagfile(&StateFile);
+ pkgTagSection section;
+ std::set<string> pkgs_seen;
+ const char *nullreorderlist[] = {0};
+ while(tagfile.Step(section)) {
+ string pkgname = section.FindS("Package");
+ // Silently ignore unknown packages and packages with no actual
+ // version.
+ pkgCache::PkgIterator pkg=Cache->FindPkg(pkgname);
+ if(pkg.end() || pkg.VersionList().end())
+ continue;
+ bool oldAuto = section.FindI("Auto-Installed");
+ bool newAuto = (PkgState[pkg->ID].Flags & Flag::Auto);
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::clog << "Update exisiting AutoInstall info: "
+ << pkg.Name() << std::endl;
+ TFRewriteData rewrite[2];
+ rewrite[0].Tag = "Auto-Installed";
+ rewrite[0].Rewrite = newAuto ? "1" : "0";
+ rewrite[0].NewTag = 0;
+ rewrite[1].Tag = 0;
+ TFRewrite(OutFile, section, nullreorderlist, rewrite);
+ fprintf(OutFile,"\n");
+ pkgs_seen.insert(pkgname);
+ }
+
+ // then write the ones we have not seen yet
+ std::ostringstream ostr;
+ for(pkgCache::PkgIterator pkg=Cache->PkgBegin(); !pkg.end(); pkg++) {
+ if(PkgState[pkg->ID].Flags & Flag::Auto) {
+ if (pkgs_seen.find(pkg.Name()) != pkgs_seen.end()) {
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::clog << "Skipping already written " << pkg.Name() << std::endl;
+ continue;
+ }
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::clog << "Writing new AutoInstall: "
+ << pkg.Name() << std::endl;
+ ostr.str(string(""));
+ ostr << "Package: " << pkg.Name()
+ << "\nAuto-Installed: 1\n\n";
+ fprintf(OutFile,ostr.str().c_str());
+ fprintf(OutFile,"\n");
+ }
+ }
+ fclose(OutFile);
+
+ // move the outfile over the real file
+ rename(outfile.c_str(), state.c_str());
+
+ return true;
+}
+
// DepCache::CheckDep - Checks a single dependency /*{{{*/
// ---------------------------------------------------------------------
/* This first checks the dependency against the main target package and
@@ -454,12 +614,14 @@ void pkgDepCache::Update(OpProgress *Prog)
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 ment to scan reverse dependencies. */
+ It is mainly meant to scan reverse dependencies. */
void pkgDepCache::Update(DepIterator D)
{
// Update the reverse deps
@@ -511,7 +673,7 @@ void pkgDepCache::Update(PkgIterator const &Pkg)
// DepCache::MarkKeep - Put the package in the keep state /*{{{*/
// ---------------------------------------------------------------------
/* */
-void pkgDepCache::MarkKeep(PkgIterator const &Pkg,bool Soft)
+void pkgDepCache::MarkKeep(PkgIterator const &Pkg, bool Soft, bool FromUser)
{
// Simplifies other routines.
if (Pkg.end() == true)
@@ -523,6 +685,9 @@ void pkgDepCache::MarkKeep(PkgIterator const &Pkg,bool Soft)
Pkg.CurrentVer().Downloadable() == false)
return;
+ /** \todo Can this be moved later in the method? */
+ ActionGroup group(*this);
+
/* We changed the soft state all the time so the UI is a bit nicer
to use */
StateCache &P = PkgState[Pkg->ID];
@@ -539,7 +704,8 @@ void pkgDepCache::MarkKeep(PkgIterator const &Pkg,bool Soft)
if (Pkg->VersionList == 0)
return;
- P.Flags &= ~Flag::Auto;
+ if(FromUser && !P.Marked)
+ P.Flags &= ~Flag::Auto;
RemoveSizes(Pkg);
RemoveStates(Pkg);
@@ -565,6 +731,8 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge)
if (Pkg.end() == true)
return;
+ ActionGroup group(*this);
+
// Check that it is not already marked for delete
StateCache &P = PkgState[Pkg->ID];
P.iFlags &= ~(AutoKept | Purge);
@@ -587,7 +755,6 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge)
else
P.Mode = ModeDelete;
P.InstallVer = 0;
- P.Flags &= Flag::Auto;
AddStates(Pkg);
Update(Pkg);
@@ -598,7 +765,8 @@ void pkgDepCache::MarkDelete(PkgIterator const &Pkg, bool rPurge)
// ---------------------------------------------------------------------
/* */
void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
- unsigned long Depth, bool ForceImportantDeps)
+ unsigned long Depth, bool FromUser,
+ bool ForceImportantDeps)
{
if (Depth > 100)
return;
@@ -607,6 +775,8 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
if (Pkg.end() == true)
return;
+ ActionGroup group(*this);
+
/* Check that it is not already marked for install and that it can be
installed */
StateCache &P = PkgState[Pkg->ID];
@@ -616,7 +786,7 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
P.CandidateVer == (Version *)Pkg.CurrentVer()))
{
if (P.CandidateVer == (Version *)Pkg.CurrentVer() && P.InstallVer == 0)
- MarkKeep(Pkg);
+ MarkKeep(Pkg, false, FromUser);
return;
}
@@ -634,7 +804,20 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
P.Mode = ModeInstall;
P.InstallVer = P.CandidateVer;
- P.Flags &= ~Flag::Auto;
+
+ if(FromUser)
+ {
+ // Set it to manual if it's a new install or cancelling the
+ // removal of a garbage package.
+ if(P.Status == 2 || (!Pkg.CurrentVer().end() && !P.Marked))
+ 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;
@@ -744,19 +927,18 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
}
}
- if (InstPkg.end() == false)
+ if (InstPkg.end() == false)
{
if(_config->FindB("Debug::pkgDepCache::AutoInstall",false) == true)
std::clog << "Installing " << InstPkg.Name()
<< " as dep of " << Pkg.Name()
<< std::endl;
- MarkInstall(InstPkg,true,Depth + 1, ForceImportantDeps);
-
- // Set the autoflag, after MarkInstall because MarkInstall unsets it
+ MarkInstall(InstPkg, true, Depth + 1, false, ForceImportantDeps);
+ // Set the autoflag, after MarkInstall because MarkInstall
+ // unsets it
if (P->CurrentVer == 0)
PkgState[InstPkg->ID].Flags |= Flag::Auto;
}
-
continue;
}
@@ -770,7 +952,6 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
PkgIterator Pkg = Ver.ParentPkg();
MarkDelete(Pkg);
- PkgState[Pkg->ID].Flags |= Flag::Auto;
}
continue;
}
@@ -782,6 +963,8 @@ void pkgDepCache::MarkInstall(PkgIterator const &Pkg,bool AutoInst,
/* */
void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
{
+ ActionGroup group(*this);
+
RemoveSizes(Pkg);
RemoveStates(Pkg);
@@ -800,9 +983,11 @@ void pkgDepCache::SetReInstall(PkgIterator const &Pkg,bool To)
/* */
void pkgDepCache::SetCandidateVersion(VerIterator TargetVer)
{
+ ActionGroup group(*this);
+
pkgCache::PkgIterator Pkg = TargetVer.ParentPkg();
StateCache &P = PkgState[Pkg->ID];
-
+
RemoveSizes(Pkg);
RemoveStates(Pkg);
@@ -815,6 +1000,18 @@ void pkgDepCache::SetCandidateVersion(VerIterator TargetVer)
Update(Pkg);
AddSizes(Pkg);
}
+
+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 /*{{{*/
// ---------------------------------------------------------------------
@@ -926,3 +1123,216 @@ bool pkgDepCache::Policy::IsImportantDep(DepIterator Dep)
return false;
}
/*}}}*/
+
+pkgDepCache::DefaultRootSetFunc::DefaultRootSetFunc()
+ : constructedSuccessfully(false)
+{
+ Configuration::Item const *Opts;
+ Opts = _config->Tree("APT::NeverAutoRemove");
+ if (Opts != 0 && Opts->Child != 0)
+ {
+ Opts = Opts->Child;
+ for (; Opts != 0; Opts = Opts->Next)
+ {
+ if (Opts->Value.empty() == true)
+ continue;
+
+ regex_t *p = new regex_t;
+ if(regcomp(p,Opts->Value.c_str(),
+ REG_EXTENDED | REG_ICASE | REG_NOSUB) != 0)
+ {
+ regfree(p);
+ delete p;
+ _error->Error("Regex compilation error for APT::NeverAutoRemove");
+ return;
+ }
+
+ rootSetRegexp.push_back(p);
+ }
+ }
+
+ constructedSuccessfully = true;
+}
+
+pkgDepCache::DefaultRootSetFunc::~DefaultRootSetFunc()
+{
+ for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
+ {
+ regfree(rootSetRegexp[i]);
+ delete rootSetRegexp[i];
+ }
+}
+
+
+bool pkgDepCache::DefaultRootSetFunc::InRootSet(const pkgCache::PkgIterator &pkg)
+{
+ for(unsigned int i = 0; i < rootSetRegexp.size(); i++)
+ if (regexec(rootSetRegexp[i], pkg.Name(), 0, 0, 0) == 0)
+ return true;
+
+ return false;
+}
+
+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", false);
+}
+
+// the main mark algorithm
+bool pkgDepCache::MarkRequired(InRootSetFunc &userFunc)
+{
+ bool follow_recommends;
+ bool follow_suggests;
+
+ // init the states
+ for(PkgIterator p = PkgBegin(); !p.end(); ++p)
+ {
+ PkgState[p->ID].Marked = false;
+ PkgState[p->ID].Garbage = false;
+
+ // debug output
+ if(_config->FindB("Debug::pkgAutoRemove",false)
+ && PkgState[p->ID].Flags & Flag::Auto)
+ std::clog << "AutoDep: " << p.Name() << 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) ||
+ userFunc.InRootSet(p))
+
+ {
+ // 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;
+}
+
+// mark a single package in Mark-and-Sweep
+void pkgDepCache::MarkPackage(const pkgCache::PkgIterator &pkg,
+ const pkgCache::VerIterator &ver,
+ bool follow_recommends,
+ bool follow_suggests)
+{
+ pkgDepCache::StateCache &state = PkgState[pkg->ID];
+ VerIterator candver = state.CandidateVerIter(*this);
+ VerIterator instver = state.InstVerIter(*this);
+
+#if 0
+ // 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
+
+ // Ignore versions other than the InstVer, and ignore packages
+ // that are already going to be removed or just left uninstalled.
+ if(!(ver == instver && !instver.end()))
+ return;
+
+ // if we are marked already we are done
+ if(state.Marked)
+ return;
+
+ //std::cout << "Setting Marked for: " << pkg.Name() << std::endl;
+ state.Marked=true;
+
+ if(!ver.end())
+ {
+ 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(_system->VS->CheckDep(V.VerStr(), d->CompareOp, d.TargetVer()))
+ {
+ MarkPackage(V.ParentPkg(), V,
+ follow_recommends, follow_suggests);
+ }
+ }
+ // Now try virtual packages
+ for(PrvIterator prv=d.TargetPkg().ProvidesList();
+ !prv.end(); ++prv)
+ {
+ if(_system->VS->CheckDep(prv.ProvideVersion(), d->CompareOp,
+ d.TargetVer()))
+ {
+ MarkPackage(prv.OwnerPkg(), prv.OwnerVer(),
+ follow_recommends, follow_suggests);
+ }
+ }
+ }
+ }
+ }
+}
+
+bool pkgDepCache::Sweep()
+{
+ // do the sweep
+ for(PkgIterator p=PkgBegin(); !p.end(); ++p)
+ {
+ StateCache &state=PkgState[p->ID];
+
+ // if it is not marked and it is installed, it's garbage
+ if(!state.Marked && (!p.CurrentVer().end() || state.Install()) &&
+ !state.Delete())
+ {
+ state.Garbage=true;
+ if(_config->FindB("Debug::pkgAutoRemove",false))
+ std::cout << "Garbage: " << p.Name() << std::endl;
+ }
+ }
+
+ return true;
+}
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