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[apt.git] / apt-pkg / edsp.cc
index 27b269fd21cbf5cec6c066e279dc53566e15beeb..f56625feb5e9044e04ac5a07fd41bf38d5798731 100644 (file)
@@ -7,6 +7,7 @@
 // Include Files                                                       /*{{{*/
 #include <config.h>
 
+#include <apt-pkg/algorithms.h>
 #include <apt-pkg/error.h>
 #include <apt-pkg/cacheset.h>
 #include <apt-pkg/depcache.h>
@@ -339,7 +340,7 @@ static bool WriteScenarioLimitedDependency(FileFd &output,
 static bool SkipUnavailableVersions(pkgDepCache &Cache, pkgCache::PkgIterator const &Pkg, pkgCache::VerIterator const &Ver)/*{{{*/
 {
    /* versions which aren't current and aren't available in
-      any "online" source file are bad, expect if they are the choosen
+      any "online" source file are bad, expect if they are the chosen
       candidate: The exception is for build-dep implementation as it creates
       such pseudo (package) versions and removes them later on again.
       We filter out versions at all so packages in 'rc' state only available
@@ -439,7 +440,7 @@ bool EDSP::WriteScenario(pkgDepCache &Cache, FileFd &output, OpProgress *Progres
            Progress->Progress(p);
       }
    }
-   return true;
+   return Okay;
 }
                                                                        /*}}}*/
 // EDSP::WriteLimitedScenario - to the given file descriptor           /*{{{*/
@@ -1016,20 +1017,38 @@ bool EDSP::ExecuteSolver(const char* const solver, int *solver_in, int *solver_o
    return true;
 }
                                                                        /*}}}*/
+static bool CreateDumpFile(char const * const id, char const * const type, FileFd &output)/*{{{*/
+{
+       auto const dumpfile = _config->FindFile((std::string("Dir::Log::") + type).c_str());
+       if (dumpfile.empty())
+               return false;
+       auto const dumpdir = flNotFile(dumpfile);
+       _error->PushToStack();
+       bool errored_out = CreateAPTDirectoryIfNeeded(dumpdir, dumpdir) == false ||
+          output.Open(dumpfile, FileFd::WriteOnly | FileFd::Exclusive | FileFd::Create, FileFd::Extension, 0644) == false;
+       std::vector<std::string> downgrademsgs;
+       while (_error->empty() == false)
+       {
+               std::string msg;
+               _error->PopMessage(msg);
+               downgrademsgs.emplace_back(std::move(msg));
+       }
+       _error->RevertToStack();
+       for (auto && msg : downgrademsgs)
+          _error->Warning("%s", msg.c_str());
+       if (errored_out)
+               return _error->WarningE(id, _("Could not open file '%s'"), dumpfile.c_str());
+       return true;
+}
+                                                                       /*}}}*/
 // EDSP::ResolveExternal - resolve problems by asking external for help        {{{*/
 bool EDSP::ResolveExternal(const char* const solver, pkgDepCache &Cache,
                         unsigned int const flags, OpProgress *Progress) {
        if (strcmp(solver, "internal") == 0)
        {
-               auto const dumpfile = _config->FindFile("Dir::Log::Solver");
-               if (dumpfile.empty())
-                       return false;
-               auto const dumpdir = flNotFile(dumpfile);
                FileFd output;
-               if (CreateAPTDirectoryIfNeeded(dumpdir, dumpdir) == false ||
-                     output.Open(dumpfile, FileFd::WriteOnly | FileFd::Exclusive | FileFd::Create, FileFd::Extension, 0644) == false)
-                       return _error->WarningE("EDSP::Resolve", _("Could not open file '%s'"), dumpfile.c_str());
-               bool Okay = EDSP::WriteRequest(Cache, output, flags, nullptr);
+               bool Okay = CreateDumpFile("EDSP::Resolve", "solver", output);
+               Okay &= EDSP::WriteRequest(Cache, output, flags, nullptr);
                return Okay && EDSP::WriteScenario(Cache, output, nullptr);
        }
        int solver_in, solver_out;
@@ -1042,20 +1061,21 @@ bool EDSP::ResolveExternal(const char* const solver, pkgDepCache &Cache,
                return _error->Errno("ResolveExternal", "Opening solver %s stdin on fd %d for writing failed", solver, solver_in);
 
        bool Okay = output.Failed() == false;
-       if (Progress != NULL)
+       if (Okay && Progress != NULL)
                Progress->OverallProgress(0, 100, 5, _("Execute external solver"));
        Okay &= EDSP::WriteRequest(Cache, output, flags, Progress);
-       if (Progress != NULL)
+       if (Okay && Progress != NULL)
                Progress->OverallProgress(5, 100, 20, _("Execute external solver"));
        Okay &= EDSP::WriteScenario(Cache, output, Progress);
        output.Close();
 
-       if (Progress != NULL)
+       if (Okay && Progress != NULL)
                Progress->OverallProgress(25, 100, 75, _("Execute external solver"));
        if (Okay && EDSP::ReadResponse(solver_out, Cache, Progress) == false)
                return false;
 
-       return ExecWait(solver_pid, solver);
+       bool const waited = ExecWait(solver_pid, solver);
+       return Okay && waited;
 }
 bool EDSP::ResolveExternal(const char* const solver, pkgDepCache &Cache,
                         bool const upgrade, bool const distUpgrade,
@@ -1076,15 +1096,16 @@ bool EIPP::OrderInstall(char const * const solver, pkgPackageManager * const PM,
 {
    if (strcmp(solver, "internal") == 0)
    {
-      auto const dumpfile = _config->FindFile("Dir::Log::Planner");
-      if (dumpfile.empty())
-        return false;
-      auto const dumpdir = flNotFile(dumpfile);
       FileFd output;
-      if (CreateAPTDirectoryIfNeeded(dumpdir, dumpdir) == false ||
-           output.Open(dumpfile, FileFd::WriteOnly | FileFd::Exclusive | FileFd::Create, FileFd::Extension, 0644) == false)
-        return _error->WarningE("EIPP::OrderInstall", _("Could not open file '%s'"), dumpfile.c_str());
-      bool Okay = EIPP::WriteRequest(PM->Cache, output, flags, nullptr);
+      _error->PushToStack();
+      bool Okay = CreateDumpFile("EIPP::OrderInstall", "planner", output);
+      if (Okay == false && dynamic_cast<pkgSimulate*>(PM) != nullptr)
+      {
+        _error->RevertToStack();
+        return false;
+      }
+      _error->MergeWithStack();
+      Okay &= EIPP::WriteRequest(PM->Cache, output, flags, nullptr);
       return Okay && EIPP::WriteScenario(PM->Cache, output, nullptr);
    }
 
@@ -1098,28 +1119,32 @@ bool EIPP::OrderInstall(char const * const solver, pkgPackageManager * const PM,
       return _error->Errno("EIPP::OrderInstall", "Opening planner %s stdin on fd %d for writing failed", solver, solver_in);
 
    bool Okay = output.Failed() == false;
-   if (Progress != NULL)
+   if (Okay && Progress != NULL)
       Progress->OverallProgress(0, 100, 5, _("Execute external planner"));
    Okay &= EIPP::WriteRequest(PM->Cache, output, flags, Progress);
-   if (Progress != NULL)
+   if (Okay && Progress != NULL)
       Progress->OverallProgress(5, 100, 20, _("Execute external planner"));
    Okay &= EIPP::WriteScenario(PM->Cache, output, Progress);
    output.Close();
 
-   if (Progress != NULL)
-      Progress->OverallProgress(25, 100, 75, _("Execute external planner"));
-
-   // we don't tell the external planners about boring things
-   for (auto Pkg = PM->Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
+   if (Okay)
    {
-      if (Pkg->CurrentState == pkgCache::State::ConfigFiles && PM->Cache[Pkg].Purge() == true)
-        PM->Remove(Pkg, true);
+      if (Progress != nullptr)
+        Progress->OverallProgress(25, 100, 75, _("Execute external planner"));
+
+      // we don't tell the external planners about boring things
+      for (auto Pkg = PM->Cache.PkgBegin(); Pkg.end() == false; ++Pkg)
+      {
+        if (Pkg->CurrentState == pkgCache::State::ConfigFiles && PM->Cache[Pkg].Purge() == true)
+           PM->Remove(Pkg, true);
+      }
    }
 
-   if (Okay && EIPP::ReadResponse(solver_out, PM, Progress) == false)
+   if (EIPP::ReadResponse(solver_out, PM, Progress) == false)
       return false;
 
-   return ExecWait(solver_pid, solver);
+   bool const waited = ExecWait(solver_pid, solver);
+   return Okay && waited;
 }
                                                                        /*}}}*/
 bool EIPP::WriteRequest(pkgDepCache &Cache, FileFd &output,            /*{{{*/
@@ -1284,7 +1309,7 @@ bool EIPP::WriteScenario(pkgDepCache &Cache, FileFd &output, OpProgress * const
         continue;
       forAllInterestingVersions(Cache, Pkg, WriteVersion);
    }
-   return true;
+   return Okay;
 }
                                                                        /*}}}*/
 // EIPP::ReadResponse - from the given file descriptor                 /*{{{*/
@@ -1361,7 +1386,7 @@ bool EIPP::ReadResponse(int const input, pkgPackageManager * const PM, OpProgres
       else if (strcmp(type, "Remove") == 0)
         PM->Remove(Pkg, PM->Cache[Pkg].Purge());
    }
-   return true;
+   return in.Failed() == false;
 }
                                                                        /*}}}*/
 bool EIPP::ReadRequest(int const input, std::list<std::pair<std::string,PKG_ACTION>> &actions,/*{{{*/
@@ -1417,9 +1442,6 @@ bool EIPP::ReadRequest(int const input, std::list<std::pair<std::string,PKG_ACTI
       }
    }
    return false;
-
-
-   return false;
 }
                                                                        /*}}}*/
 bool EIPP::ApplyRequest(std::list<std::pair<std::string,PKG_ACTION>> &actions,/*{{{*/