zypp/solver/detail/SATResolver.cc

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
   2 /* SATResolver.cc
   3  *
   4  * Copyright (C) 2000-2002 Ximian, Inc.
   5  * Copyright (C) 2005 SUSE Linux Products GmbH
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License,
   9  * version 2, as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19  * 02111-1307, USA.
  20  */
  21 extern "C"
  22 {
  23 #include <solv/repo_solv.h>
  24 #include <solv/poolarch.h>
  25 #include <solv/evr.h>
  26 #include <solv/poolvendor.h>
  27 #include <solv/policy.h>
  28 #include <solv/bitmap.h>
  29 #include <solv/queue.h>
  30 }
  31
  32 #define ZYPP_USE_RESOLVER_INTERNALS
  33
  34 #include "zypp/base/LogTools.h"
  35 #include "zypp/base/Gettext.h"
  36 #include "zypp/base/Algorithm.h"
  37
  38 #include "zypp/ZConfig.h"
  39 #include "zypp/Product.h"
  40 #include "zypp/sat/WhatProvides.h"
  41 #include "zypp/sat/WhatObsoletes.h"
  42 #include "zypp/sat/detail/PoolImpl.h"
  43
  44 #include "zypp/solver/detail/Resolver.h"
  45 #include "zypp/solver/detail/SATResolver.h"
  46
  47 #include "zypp/solver/detail/ProblemSolutionCombi.h"
  48 #include "zypp/solver/detail/ProblemSolutionIgnore.h"
  49 #include "zypp/solver/detail/SolverQueueItemInstall.h"
  50 #include "zypp/solver/detail/SolverQueueItemDelete.h"
  51 #include "zypp/solver/detail/SystemCheck.h"
  52 #include "zypp/solver/detail/SolutionAction.h"
  53 #include "zypp/solver/detail/SolverQueueItem.h"
  54
  55 #define XDEBUG(x) do { if (base::logger::isExcessive()) XXX << x << std::endl;} while (0)
  56
  57 #undef ZYPP_BASE_LOGGER_LOGGROUP
  58 #define ZYPP_BASE_LOGGER_LOGGROUP "zypp::solver"
  59
  60 /////////////////////////////////////////////////////////////////////////
  61 namespace zypp
  62 { ///////////////////////////////////////////////////////////////////////
  63   ///////////////////////////////////////////////////////////////////////
  64   namespace solver
  65   { /////////////////////////////////////////////////////////////////////
  66     /////////////////////////////////////////////////////////////////////
  67     namespace detail
  68     { ///////////////////////////////////////////////////////////////////
  69
  70       ///////////////////////////////////////////////////////////////////////
  71       namespace
  72       {
  73         inline void solverSetFocus( sat::detail::CSolver & satSolver_r, const ResolverFocus & focus_r )
  74         {
  75           switch ( focus_r )
  76           {
  77             case ResolverFocus::Default:        // fallthrough to Job
  78             case ResolverFocus::Job:
  79               solver_set_flag( &satSolver_r, SOLVER_FLAG_FOCUS_INSTALLED, 0 );
  80               solver_set_flag( &satSolver_r, SOLVER_FLAG_FOCUS_BEST,      0 );
  81               break;
  82             case ResolverFocus::Installed:
  83               solver_set_flag( &satSolver_r, SOLVER_FLAG_FOCUS_INSTALLED, 1 );
  84               solver_set_flag( &satSolver_r, SOLVER_FLAG_FOCUS_BEST,      0 );
  85               break;
  86             case ResolverFocus::Update:
  87               solver_set_flag( &satSolver_r, SOLVER_FLAG_FOCUS_INSTALLED, 0 );
  88               solver_set_flag( &satSolver_r, SOLVER_FLAG_FOCUS_BEST,      1 );
  89               break;
  90           }
  91         }
  92
  93       } //namespace
  94       ///////////////////////////////////////////////////////////////////////
  95
  96
  97 using namespace std;
  98
  99 IMPL_PTR_TYPE(SATResolver);
 100
 101 #define MAYBE_CLEANDEPS (cleandepsOnRemove()?SOLVER_CLEANDEPS:0)
 102
 103 //---------------------------------------------------------------------------
 104 // Callbacks for SAT policies
 105 //---------------------------------------------------------------------------
 106
 107 int vendorCheck( sat::detail::CPool *pool, Solvable *solvable1, Solvable *solvable2 )
 108 {
 109   return VendorAttr::instance().equivalent( IdString(solvable1->vendor),
 110                                             IdString(solvable2->vendor) ) ? 0 : 1;
 111 }
 112
 113
 114 inline std::string itemToString( const PoolItem & item )
 115 {
 116   if ( !item )
 117     return std::string();
 118
 119   sat::Solvable slv( item.satSolvable() );
 120   std::string ret( slv.asString() ); // n-v-r.a
 121   if ( ! slv.isSystem() )
 122   {
 123     ret += "[";
 124     ret += slv.repository().alias();
 125     ret += "]";
 126   }
 127   return ret;
 128 }
 129
 130 inline PoolItem getPoolItem( Id id_r )
 131 {
 132   PoolItem ret( (sat::Solvable( id_r )) );
 133   if ( !ret && id_r )
 134     INT << "id " << id_r << " not found in ZYPP pool." << endl;
 135   return ret;
 136 }
 137
 138 //---------------------------------------------------------------------------
 139
 140 std::ostream &
 141 SATResolver::dumpOn( std::ostream & os ) const
 142 {
 143     os << "<resolver>" << endl;
 144     if (_satSolver) {
 145 #define OUTS(X) os << "  " << #X << "\t= " << solver_get_flag(_satSolver, SOLVER_FLAG_##X) << endl
 146         OUTS( ALLOW_DOWNGRADE );
 147         OUTS( ALLOW_ARCHCHANGE );
 148         OUTS( ALLOW_VENDORCHANGE );
 149         OUTS( ALLOW_NAMECHANGE );
 150         OUTS( ALLOW_UNINSTALL );
 151         OUTS( NO_UPDATEPROVIDE );
 152         OUTS( SPLITPROVIDES );
 153         OUTS( IGNORE_RECOMMENDED );
 154         OUTS( ADD_ALREADY_RECOMMENDED );
 155         OUTS( NO_INFARCHCHECK );
 156         OUTS( KEEP_EXPLICIT_OBSOLETES );
 157         OUTS( BEST_OBEY_POLICY );
 158         OUTS( NO_AUTOTARGET );
 159         OUTS( DUP_ALLOW_DOWNGRADE );
 160         OUTS( DUP_ALLOW_ARCHCHANGE );
 161         OUTS( DUP_ALLOW_VENDORCHANGE );
 162         OUTS( DUP_ALLOW_NAMECHANGE );
 163         OUTS( KEEP_ORPHANS );
 164         OUTS( BREAK_ORPHANS );
 165         OUTS( YUM_OBSOLETES );
 166 #undef OUTS
 167         os << "  focus  = "     << _focus << endl;
 168         os << "  distupgrade    = "     << _distupgrade << endl;
 169         os << "  distupgrade_removeunsupported  = " << _distupgrade_removeunsupported << endl;
 170         os << "  solveSrcPackages       = "     << _solveSrcPackages << endl;
 171         os << "  cleandepsOnRemove      = "     << _cleandepsOnRemove << endl;
 172         os << "  fixsystem              = "     << _fixsystem << endl;
 173     } else {
 174         os << "<NULL>";
 175     }
 176     return os << "<resolver/>" << endl;
 177 }
 178
 179 //---------------------------------------------------------------------------
 180
 181 // NOTE: flag defaults must be in sync with ZVARDEFAULT in Resolver.cc
 182 SATResolver::SATResolver (const ResPool & pool, sat::detail::CPool *satPool)
 183     : _pool(pool)
 184     , _satPool(satPool)
 185     , _satSolver(NULL)
 186     , _focus                    ( ZConfig::instance().solver_focus() )
 187     , _fixsystem(false)
 188     , _allowdowngrade           ( false )
 189     , _allownamechange          ( true )        // bsc#1071466
 190     , _allowarchchange          ( false )
 191     , _allowvendorchange        ( ZConfig::instance().solver_allowVendorChange() )
 192     , _allowuninstall           ( false )
 193     , _updatesystem(false)
 194     , _noupdateprovide          ( false )
 195     , _dosplitprovides          ( true )
 196     , _onlyRequires             (ZConfig::instance().solver_onlyRequires())
 197     , _ignorealreadyrecommended(true)
 198     , _distupgrade(false)
 199     , _distupgrade_removeunsupported(false)
 200     , _dup_allowdowngrade       ( ZConfig::instance().solver_dupAllowDowngrade() )
 201     , _dup_allownamechange      ( ZConfig::instance().solver_dupAllowNameChange() )
 202     , _dup_allowarchchange      ( ZConfig::instance().solver_dupAllowArchChange() )
 203     , _dup_allowvendorchange    ( ZConfig::instance().solver_dupAllowVendorChange() )
 204     , _solveSrcPackages(false)
 205     , _cleandepsOnRemove(ZConfig::instance().solver_cleandepsOnRemove())
 206 {
 207 }
 208
 209
 210 SATResolver::~SATResolver()
 211 {
 212   solverEnd();
 213 }
 214
 215 //---------------------------------------------------------------------------
 216
 217 ResPool
 218 SATResolver::pool (void) const
 219 {
 220     return _pool;
 221 }
 222
 223 //---------------------------------------------------------------------------
 224
 225 // copy marked item from solution back to pool
 226 // if data != NULL, set as APPL_LOW (from establishPool())
 227
 228 static void
 229 SATSolutionToPool (PoolItem item, const ResStatus & status, const ResStatus::TransactByValue causer)
 230 {
 231     // resetting
 232     item.status().resetTransact (causer);
 233     item.status().resetWeak ();
 234
 235     bool r;
 236
 237     // installation/deletion
 238     if (status.isToBeInstalled()) {
 239         r = item.status().setToBeInstalled (causer);
 240         XDEBUG("SATSolutionToPool install returns " << item << ", " << r);
 241     }
 242     else if (status.isToBeUninstalledDueToUpgrade()) {
 243         r = item.status().setToBeUninstalledDueToUpgrade (causer);
 244         XDEBUG("SATSolutionToPool upgrade returns " << item << ", " <<  r);
 245     }
 246     else if (status.isToBeUninstalled()) {
 247         r = item.status().setToBeUninstalled (causer);
 248         XDEBUG("SATSolutionToPool remove returns " << item << ", " <<  r);
 249     }
 250
 251     return;
 252 }
 253
 254 //----------------------------------------------------------------------------
 255 //----------------------------------------------------------------------------
 256 // resolvePool
 257 //----------------------------------------------------------------------------
 258 //----------------------------------------------------------------------------
 259 /////////////////////////////////////////////////////////////////////////
 260 /// \class SATCollectTransact
 261 /// \brief Commit helper functor distributing PoolItem by status into lists
 262 ///
 263 /// On the fly it clears all PoolItem bySolver/ByApplLow status.
 264 /// The lists are cleared in the Ctor, populated by \ref operator().
 265 /////////////////////////////////////////////////////////////////////////
 266 struct SATCollectTransact : public resfilter::PoolItemFilterFunctor
 267 {
 268   SATCollectTransact( PoolItemList & items_to_install_r,
 269                       PoolItemList & items_to_remove_r,
 270                       PoolItemList & items_to_lock_r,
 271                       PoolItemList & items_to_keep_r,
 272                       bool solveSrcPackages_r )
 273   : _items_to_install( items_to_install_r )
 274   , _items_to_remove( items_to_remove_r )
 275   , _items_to_lock( items_to_lock_r )
 276   , _items_to_keep( items_to_keep_r )
 277   , _solveSrcPackages( solveSrcPackages_r )
 278   {
 279     _items_to_install.clear();
 280     _items_to_remove.clear();
 281     _items_to_lock.clear();
 282     _items_to_keep.clear();
 283   }
 284
 285   bool operator()( const PoolItem & item_r )
 286   {
 287
 288     ResStatus & itemStatus( item_r.status() );
 289     bool by_solver = ( itemStatus.isBySolver() || itemStatus.isByApplLow() );
 290
 291     if ( by_solver )
 292     {
 293       // Clear former solver/establish resultd
 294       itemStatus.resetTransact( ResStatus::APPL_LOW );
 295       return true;      // -> back out here, don't re-queue former results
 296     }
 297
 298     if ( !_solveSrcPackages && item_r.isKind<SrcPackage>() )
 299     {
 300       // Later we may continue on a per source package base.
 301       return true; // dont process this source package.
 302     }
 303
 304     switch ( itemStatus.getTransactValue() )
 305     {
 306       case ResStatus::TRANSACT:
 307         itemStatus.isUninstalled() ?    _items_to_install.push_back( item_r )
 308                                    :    _items_to_remove.push_back( item_r );   break;
 309       case ResStatus::LOCKED:           _items_to_lock.push_back( item_r );     break;
 310       case ResStatus::KEEP_STATE:       _items_to_keep.push_back( item_r );     break;
 311     }
 312     return true;
 313   }
 314
 315 private:
 316   PoolItemList & _items_to_install;
 317   PoolItemList & _items_to_remove;
 318   PoolItemList & _items_to_lock;
 319   PoolItemList & _items_to_keep;
 320   bool _solveSrcPackages;
 321
 322 };
 323 /////////////////////////////////////////////////////////////////////////
 324
 325
 326 //----------------------------------------------------------------------------
 327 //----------------------------------------------------------------------------
 328 // solving.....
 329 //----------------------------------------------------------------------------
 330 //----------------------------------------------------------------------------
 331
 332
 333 class CheckIfUpdate : public resfilter::PoolItemFilterFunctor
 334 {
 335   public:
 336     bool is_updated;
 337     sat::Solvable _installed;
 338
 339     CheckIfUpdate( const sat::Solvable & installed_r )
 340     : is_updated( false )
 341     , _installed( installed_r )
 342     {}
 343
 344     // check this item will be updated
 345
 346     bool operator()( const PoolItem & item )
 347     {
 348         if ( item.status().isToBeInstalled() )
 349         {
 350           if ( ! item.multiversionInstall() || sameNVRA( _installed, item ) )
 351           {
 352             is_updated = true;
 353             return false;
 354           }
 355         }
 356         return true;
 357     }
 358 };
 359
 360
 361 class CollectPseudoInstalled : public resfilter::PoolItemFilterFunctor
 362 {
 363   public:
 364     Queue *solvableQueue;
 365
 366     CollectPseudoInstalled( Queue *queue )
 367         :solvableQueue (queue)
 368     {}
 369
 370     // collecting PseudoInstalled items
 371     bool operator()( PoolItem item )
 372     {
 373       if ( traits::isPseudoInstalled( item.satSolvable().kind() ) )
 374         queue_push( solvableQueue, item.satSolvable().id() );
 375       return true;
 376     }
 377 };
 378
 379 bool
 380 SATResolver::solving(const CapabilitySet & requires_caps,
 381                      const CapabilitySet & conflict_caps)
 382 {
 383     _satSolver = solver_create( _satPool );
 384     ::pool_set_custom_vendorcheck( _satPool, &vendorCheck );
 385     if (_fixsystem) {
 386         queue_push( &(_jobQueue), SOLVER_VERIFY|SOLVER_SOLVABLE_ALL);
 387         queue_push( &(_jobQueue), 0 );
 388     }
 389     if (_updatesystem) {
 390         queue_push( &(_jobQueue), SOLVER_UPDATE|SOLVER_SOLVABLE_ALL);
 391         queue_push( &(_jobQueue), 0 );
 392     }
 393     if (_distupgrade) {
 394         queue_push( &(_jobQueue), SOLVER_DISTUPGRADE|SOLVER_SOLVABLE_ALL);
 395         queue_push( &(_jobQueue), 0 );
 396     }
 397     if (_distupgrade_removeunsupported) {
 398         queue_push( &(_jobQueue), SOLVER_DROP_ORPHANED|SOLVER_SOLVABLE_ALL);
 399         queue_push( &(_jobQueue), 0 );
 400     }
 401     solverSetFocus( *_satSolver, _focus );
 402     solver_set_flag(_satSolver, SOLVER_FLAG_ADD_ALREADY_RECOMMENDED, !_ignorealreadyrecommended);
 403     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_DOWNGRADE,            _allowdowngrade);
 404     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_NAMECHANGE,           _allownamechange);
 405     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_ARCHCHANGE,           _allowarchchange);
 406     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_VENDORCHANGE,         _allowvendorchange);
 407     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_UNINSTALL,            _allowuninstall);
 408     solver_set_flag(_satSolver, SOLVER_FLAG_NO_UPDATEPROVIDE,           _noupdateprovide);
 409     solver_set_flag(_satSolver, SOLVER_FLAG_SPLITPROVIDES,              _dosplitprovides);
 410     solver_set_flag(_satSolver, SOLVER_FLAG_IGNORE_RECOMMENDED,         false);         // resolve recommended namespaces
 411     solver_set_flag(_satSolver, SOLVER_FLAG_ONLY_NAMESPACE_RECOMMENDED, _onlyRequires); //
 412     solver_set_flag(_satSolver, SOLVER_FLAG_DUP_ALLOW_DOWNGRADE,        _dup_allowdowngrade );
 413     solver_set_flag(_satSolver, SOLVER_FLAG_DUP_ALLOW_NAMECHANGE,       _dup_allownamechange );
 414     solver_set_flag(_satSolver, SOLVER_FLAG_DUP_ALLOW_ARCHCHANGE,       _dup_allowarchchange );
 415     solver_set_flag(_satSolver, SOLVER_FLAG_DUP_ALLOW_VENDORCHANGE,     _dup_allowvendorchange );
 416
 417     sat::Pool::instance().prepare();
 418
 419     // Solve !
 420     MIL << "Starting solving...." << endl;
 421     MIL << *this;
 422     if ( solver_solve( _satSolver, &(_jobQueue) ) == 0 )
 423     {
 424       // bsc#1155819: Weakremovers of future product not evaluated.
 425       // Do a 2nd run to cleanup weakremovers() of to be installed
 426       // Produtcs unless removeunsupported is active (cleans up all).
 427       if ( _distupgrade )
 428       {
 429         if ( _distupgrade_removeunsupported )
 430           MIL << "Droplist processing not needed. RemoveUnsupported is On." << endl;
 431         else if ( ! ZConfig::instance().solverUpgradeRemoveDroppedPackages() )
 432           MIL << "Droplist processing is disabled in ZConfig." << endl;
 433         else
 434         {
 435           bool resolve = false;
 436           MIL << "Checking droplists ..." << endl;
 437           // get Solvables to be installed...
 438           sat::SolvableQueue decisionq;
 439           solver_get_decisionqueue( _satSolver, decisionq );
 440           for ( sat::detail::IdType id : decisionq )
 441           {
 442             if ( id < 0 )
 443               continue;
 444             sat::Solvable slv { id };
 445             // get product buddies (they carry the weakremover)...
 446             static const Capability productCap { "product()" };
 447             if ( slv && slv.provides().matches( productCap ) )
 448             {
 449               CapabilitySet droplist { slv.valuesOfNamespace( "weakremover" ) };
 450               MIL << "Droplist for " << slv << ": size " << droplist.size() << endl;
 451               if ( !droplist.empty() )
 452               {
 453                 for ( const auto & cap : droplist )
 454                 {
 455                   INT << "  => " << cap << endl;
 456                   queue_push( &_jobQueue, SOLVER_DROP_ORPHANED | SOLVER_SOLVABLE_NAME );
 457                   queue_push( &_jobQueue, cap.id() );
 458                 }
 459                 // PIN product - a safety net to prevent cleanup from changing the decision for this product
 460                 queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE );
 461                 queue_push( &(_jobQueue), id );
 462                 resolve = true;
 463               }
 464             }
 465           }
 466           if ( resolve )
 467             solver_solve( _satSolver, &(_jobQueue) );
 468         }
 469       }
 470     }
 471     MIL << "....Solver end" << endl;
 472
 473     // copying solution back to zypp pool
 474     //-----------------------------------------
 475     _result_items_to_install.clear();
 476     _result_items_to_remove.clear();
 477
 478     /*  solvables to be installed */
 479     Queue decisionq;
 480     queue_init(&decisionq);
 481     solver_get_decisionqueue(_satSolver, &decisionq);
 482     for ( int i = 0; i < decisionq.count; ++i )
 483     {
 484       Id p = decisionq.elements[i];
 485       if ( p < 0 )
 486         continue;
 487
 488       sat::Solvable slv { p };
 489       if ( ! slv || slv.isSystem() )
 490         continue;
 491
 492       PoolItem poolItem( slv );
 493       SATSolutionToPool (poolItem, ResStatus::toBeInstalled, ResStatus::SOLVER);
 494       _result_items_to_install.push_back( poolItem );
 495     }
 496     queue_free(&decisionq);
 497
 498     /* solvables to be erased */
 499     Repository systemRepo( sat::Pool::instance().findSystemRepo() ); // don't create if it does not exist
 500     if ( systemRepo && ! systemRepo.solvablesEmpty() )
 501     {
 502       bool mustCheckObsoletes = false;
 503       for_( it, systemRepo.solvablesBegin(), systemRepo.solvablesEnd() )
 504       {
 505         if (solver_get_decisionlevel(_satSolver, it->id()) > 0)
 506           continue;
 507
 508         // Check if this is an update
 509         CheckIfUpdate info( *it );
 510         PoolItem poolItem( *it );
 511         invokeOnEach( _pool.byIdentBegin( poolItem ),
 512                       _pool.byIdentEnd( poolItem ),
 513                       resfilter::ByUninstalled(),                       // ByUninstalled
 514                       functor::functorRef<bool,PoolItem> (info) );
 515
 516         if (info.is_updated) {
 517           SATSolutionToPool( poolItem, ResStatus::toBeUninstalledDueToUpgrade, ResStatus::SOLVER );
 518         } else {
 519           SATSolutionToPool( poolItem, ResStatus::toBeUninstalled, ResStatus::SOLVER );
 520           if ( ! mustCheckObsoletes )
 521             mustCheckObsoletes = true; // lazy check for UninstalledDueToObsolete
 522         }
 523         _result_items_to_remove.push_back (poolItem);
 524       }
 525       if ( mustCheckObsoletes )
 526       {
 527         sat::WhatObsoletes obsoleted( _result_items_to_install.begin(), _result_items_to_install.end() );
 528         for_( it, obsoleted.poolItemBegin(), obsoleted.poolItemEnd() )
 529         {
 530           ResStatus & status( it->status() );
 531           // WhatObsoletes contains installed items only!
 532           if ( status.transacts() && ! status.isToBeUninstalledDueToUpgrade() )
 533             status.setToBeUninstalledDueToObsolete();
 534         }
 535       }
 536     }
 537
 538     Queue recommendations;
 539     Queue suggestions;
 540     Queue orphaned;
 541     Queue unneeded;
 542     queue_init(&recommendations);
 543     queue_init(&suggestions);
 544     queue_init(&orphaned);
 545     queue_init(&unneeded);
 546     solver_get_recommendations(_satSolver, &recommendations, &suggestions, 0);
 547     solver_get_orphaned(_satSolver, &orphaned);
 548     solver_get_unneeded(_satSolver, &unneeded, 1);
 549     /*  solvables which are recommended */
 550     for ( int i = 0; i < recommendations.count; ++i )
 551     {
 552       PoolItem poolItem( getPoolItem( recommendations.elements[i] ) );
 553       poolItem.status().setRecommended( true );
 554     }
 555
 556     /*  solvables which are suggested */
 557     for ( int i = 0; i < suggestions.count; ++i )
 558     {
 559       PoolItem poolItem( getPoolItem( suggestions.elements[i] ) );
 560       poolItem.status().setSuggested( true );
 561     }
 562
 563     _problem_items.clear();
 564     /*  solvables which are orphaned */
 565     for ( int i = 0; i < orphaned.count; ++i )
 566     {
 567       PoolItem poolItem( getPoolItem( orphaned.elements[i] ) );
 568       poolItem.status().setOrphaned( true );
 569       _problem_items.push_back( poolItem );
 570     }
 571
 572     /*  solvables which are unneeded */
 573     for ( int i = 0; i < unneeded.count; ++i )
 574     {
 575       PoolItem poolItem( getPoolItem( unneeded.elements[i] ) );
 576       poolItem.status().setUnneeded( true );
 577     }
 578
 579     queue_free(&recommendations);
 580     queue_free(&suggestions);
 581     queue_free(&orphaned);
 582     queue_free(&unneeded);
 583
 584     /* Write validation state back to pool */
 585     Queue flags, solvableQueue;
 586
 587     queue_init(&flags);
 588     queue_init(&solvableQueue);
 589
 590     CollectPseudoInstalled collectPseudoInstalled(&solvableQueue);
 591     invokeOnEach( _pool.begin(),
 592                   _pool.end(),
 593                   functor::functorRef<bool,PoolItem> (collectPseudoInstalled) );
 594     solver_trivial_installable(_satSolver, &solvableQueue, &flags );
 595     for (int i = 0; i < solvableQueue.count; i++) {
 596         PoolItem item = _pool.find (sat::Solvable(solvableQueue.elements[i]));
 597         item.status().setUndetermined();
 598
 599         if (flags.elements[i] == -1) {
 600             item.status().setNonRelevant();
 601             XDEBUG("SATSolutionToPool(" << item << " ) nonRelevant !");
 602         } else if (flags.elements[i] == 1) {
 603             item.status().setSatisfied();
 604             XDEBUG("SATSolutionToPool(" << item << " ) satisfied !");
 605         } else if (flags.elements[i] == 0) {
 606             item.status().setBroken();
 607             XDEBUG("SATSolutionToPool(" << item << " ) broken !");
 608         }
 609     }
 610     queue_free(&(solvableQueue));
 611     queue_free(&flags);
 612
 613
 614     // Solvables which were selected due requirements which have been made by the user will
 615     // be selected by APPL_LOW. We can't use any higher level, because this setting must
 616     // not serve as a request for the next solver run. APPL_LOW is reset before solving.
 617     for (CapabilitySet::const_iterator iter = requires_caps.begin(); iter != requires_caps.end(); iter++) {
 618         sat::WhatProvides rpmProviders(*iter);
 619         for_( iter2, rpmProviders.begin(), rpmProviders.end() ) {
 620             PoolItem poolItem(*iter2);
 621             if (poolItem.status().isToBeInstalled()) {
 622                 MIL << "User requirement " << *iter << " sets " << poolItem << endl;
 623                 poolItem.status().setTransactByValue (ResStatus::APPL_LOW);
 624             }
 625         }
 626     }
 627     for (CapabilitySet::const_iterator iter = conflict_caps.begin(); iter != conflict_caps.end(); iter++) {
 628         sat::WhatProvides rpmProviders(*iter);
 629         for_( iter2, rpmProviders.begin(), rpmProviders.end() ) {
 630             PoolItem poolItem(*iter2);
 631             if (poolItem.status().isToBeUninstalled()) {
 632                 MIL << "User conflict " << *iter << " sets " << poolItem << endl;
 633                 poolItem.status().setTransactByValue (ResStatus::APPL_LOW);
 634             }
 635         }
 636     }
 637
 638     if (solver_problem_count(_satSolver) > 0 )
 639     {
 640         ERR << "Solverrun finished with an ERROR" << endl;
 641         return false;
 642     }
 643
 644     return true;
 645 }
 646
 647
 648 void
 649 SATResolver::solverInit(const PoolItemList & weakItems)
 650 {
 651
 652     MIL << "SATResolver::solverInit()" << endl;
 653
 654     // remove old stuff
 655     solverEnd();
 656     queue_init( &_jobQueue );
 657
 658     // clear and rebuild: _items_to_install, _items_to_remove, _items_to_lock, _items_to_keep
 659     {
 660       SATCollectTransact collector( _items_to_install, _items_to_remove, _items_to_lock, _items_to_keep, solveSrcPackages() );
 661       invokeOnEach ( _pool.begin(), _pool.end(), functor::functorRef<bool,PoolItem>( collector ) );
 662     }
 663
 664     for (PoolItemList::const_iterator iter = weakItems.begin(); iter != weakItems.end(); iter++) {
 665         Id id = (*iter)->satSolvable().id();
 666         if (id == ID_NULL) {
 667             ERR << "Weaken: " << *iter << " not found" << endl;
 668         }
 669         MIL << "Weaken dependencies of " << *iter << endl;
 670         queue_push( &(_jobQueue), SOLVER_WEAKENDEPS | SOLVER_SOLVABLE );
 671         queue_push( &(_jobQueue), id );
 672     }
 673
 674     // Ad rules for retracted patches and packages
 675     {
 676       queue_push( &(_jobQueue), SOLVER_BLACKLIST|SOLVER_SOLVABLE_PROVIDES );
 677       queue_push( &(_jobQueue), sat::Solvable::retractedToken.id() );
 678       queue_push( &(_jobQueue), SOLVER_BLACKLIST|SOLVER_SOLVABLE_PROVIDES );
 679       queue_push( &(_jobQueue), sat::Solvable::ptfToken.id() );
 680     }
 681
 682     // Ad rules for changed requestedLocales
 683     {
 684       const auto & trackedLocaleIds( myPool().trackedLocaleIds() );
 685
 686       // just track changed locakes
 687       for ( const auto & locale : trackedLocaleIds.added() )
 688       {
 689         queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE_PROVIDES );
 690         queue_push( &(_jobQueue), Capability( ResolverNamespace::language, IdString(locale) ).id() );
 691       }
 692
 693       for ( const auto & locale : trackedLocaleIds.removed() )
 694       {
 695         queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE_PROVIDES | SOLVER_CLEANDEPS ); // needs uncond. SOLVER_CLEANDEPS!
 696         queue_push( &(_jobQueue), Capability( ResolverNamespace::language, IdString(locale) ).id() );
 697       }
 698     }
 699
 700     // Add rules for parallel installable resolvables with different versions
 701     for ( const sat::Solvable & solv : myPool().multiversionList() )
 702     {
 703       queue_push( &(_jobQueue), SOLVER_NOOBSOLETES | SOLVER_SOLVABLE );
 704       queue_push( &(_jobQueue), solv.id() );
 705     }
 706
 707     ::pool_add_userinstalled_jobs(_satPool, sat::Pool::instance().autoInstalled(), &(_jobQueue), GET_USERINSTALLED_NAMES|GET_USERINSTALLED_INVERTED);
 708 }
 709
 710 void
 711 SATResolver::solverEnd()
 712 {
 713   // cleanup
 714   if ( _satSolver )
 715   {
 716     solver_free(_satSolver);
 717     _satSolver = NULL;
 718     queue_free( &(_jobQueue) );
 719   }
 720 }
 721
 722
 723 bool
 724 SATResolver::resolvePool(const CapabilitySet & requires_caps,
 725                          const CapabilitySet & conflict_caps,
 726                          const PoolItemList & weakItems,
 727                          const std::set<Repository> & upgradeRepos)
 728 {
 729     MIL << "SATResolver::resolvePool()" << endl;
 730
 731     // initialize
 732     solverInit(weakItems);
 733
 734     for (PoolItemList::const_iterator iter = _items_to_install.begin(); iter != _items_to_install.end(); iter++) {
 735         Id id = (*iter)->satSolvable().id();
 736         if (id == ID_NULL) {
 737             ERR << "Install: " << *iter << " not found" << endl;
 738         } else {
 739             MIL << "Install " << *iter << endl;
 740             queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE );
 741             queue_push( &(_jobQueue), id );
 742         }
 743     }
 744
 745     for (PoolItemList::const_iterator iter = _items_to_remove.begin(); iter != _items_to_remove.end(); iter++) {
 746         Id id = (*iter)->satSolvable().id();
 747         if (id == ID_NULL) {
 748             ERR << "Delete: " << *iter << " not found" << endl;
 749         } else {
 750             MIL << "Delete " << *iter << endl;
 751             queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE | MAYBE_CLEANDEPS );
 752             queue_push( &(_jobQueue), id);
 753         }
 754     }
 755
 756     for_( iter, upgradeRepos.begin(), upgradeRepos.end() )
 757     {
 758         queue_push( &(_jobQueue), SOLVER_DISTUPGRADE | SOLVER_SOLVABLE_REPO );
 759         queue_push( &(_jobQueue), iter->get()->repoid );
 760         MIL << "Upgrade repo " << *iter << endl;
 761     }
 762
 763     for (CapabilitySet::const_iterator iter = requires_caps.begin(); iter != requires_caps.end(); iter++) {
 764         queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE_PROVIDES );
 765         queue_push( &(_jobQueue), iter->id() );
 766         MIL << "Requires " << *iter << endl;
 767     }
 768
 769     for (CapabilitySet::const_iterator iter = conflict_caps.begin(); iter != conflict_caps.end(); iter++) {
 770         queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE_PROVIDES | MAYBE_CLEANDEPS );
 771         queue_push( &(_jobQueue), iter->id() );
 772         MIL << "Conflicts " << *iter << endl;
 773     }
 774
 775     // set requirements for a running system
 776     setSystemRequirements();
 777
 778     // set locks for the solver
 779     setLocks();
 780
 781     // solving
 782     bool ret = solving(requires_caps, conflict_caps);
 783
 784     (ret?MIL:WAR) << "SATResolver::resolvePool() done. Ret:" << ret <<  endl;
 785     return ret;
 786 }
 787
 788
 789 bool
 790 SATResolver::resolveQueue(const SolverQueueItemList &requestQueue,
 791                           const PoolItemList & weakItems)
 792 {
 793     MIL << "SATResolver::resolvQueue()" << endl;
 794
 795     // initialize
 796     solverInit(weakItems);
 797
 798     // generate solver queue
 799     for (SolverQueueItemList::const_iterator iter = requestQueue.begin(); iter != requestQueue.end(); iter++) {
 800         (*iter)->addRule(_jobQueue);
 801     }
 802
 803     // Add addition item status to the resolve-queue cause these can be set by problem resolutions
 804     for (PoolItemList::const_iterator iter = _items_to_install.begin(); iter != _items_to_install.end(); iter++) {
 805         Id id = (*iter)->satSolvable().id();
 806         if (id == ID_NULL) {
 807             ERR << "Install: " << *iter << " not found" << endl;
 808         } else {
 809             MIL << "Install " << *iter << endl;
 810             queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE );
 811             queue_push( &(_jobQueue), id );
 812         }
 813     }
 814     for (PoolItemList::const_iterator iter = _items_to_remove.begin(); iter != _items_to_remove.end(); iter++) {
 815         sat::detail::IdType ident( (*iter)->satSolvable().ident().id() );
 816         MIL << "Delete " << *iter << ident << endl;
 817         queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE_NAME | MAYBE_CLEANDEPS );
 818         queue_push( &(_jobQueue), ident);
 819     }
 820
 821     // set requirements for a running system
 822     setSystemRequirements();
 823
 824     // set locks for the solver
 825     setLocks();
 826
 827     // solving
 828     bool ret = solving();
 829
 830     MIL << "SATResolver::resolveQueue() done. Ret:" << ret <<  endl;
 831     return ret;
 832 }
 833
 834 /** \todo duplicate code to be joined with \ref solving. */
 835 void SATResolver::doUpdate()
 836 {
 837     MIL << "SATResolver::doUpdate()" << endl;
 838
 839     // initialize
 840     solverInit(PoolItemList());
 841
 842     // set requirements for a running system
 843     setSystemRequirements();
 844
 845     // set locks for the solver
 846     setLocks();
 847
 848     _satSolver = solver_create( _satPool );
 849     ::pool_set_custom_vendorcheck( _satPool, &vendorCheck );
 850     if (_fixsystem) {
 851         queue_push( &(_jobQueue), SOLVER_VERIFY|SOLVER_SOLVABLE_ALL);
 852         queue_push( &(_jobQueue), 0 );
 853     }
 854     if (1) {
 855         queue_push( &(_jobQueue), SOLVER_UPDATE|SOLVER_SOLVABLE_ALL);
 856         queue_push( &(_jobQueue), 0 );
 857     }
 858     if (_distupgrade) {
 859         queue_push( &(_jobQueue), SOLVER_DISTUPGRADE|SOLVER_SOLVABLE_ALL);
 860         queue_push( &(_jobQueue), 0 );
 861     }
 862     if (_distupgrade_removeunsupported) {
 863         queue_push( &(_jobQueue), SOLVER_DROP_ORPHANED|SOLVER_SOLVABLE_ALL);
 864         queue_push( &(_jobQueue), 0 );
 865     }
 866     solverSetFocus( *_satSolver, _focus );
 867     solver_set_flag(_satSolver, SOLVER_FLAG_ADD_ALREADY_RECOMMENDED, !_ignorealreadyrecommended);
 868     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_DOWNGRADE,            _allowdowngrade);
 869     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_NAMECHANGE,           _allownamechange);
 870     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_ARCHCHANGE,           _allowarchchange);
 871     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_VENDORCHANGE,         _allowvendorchange);
 872     solver_set_flag(_satSolver, SOLVER_FLAG_ALLOW_UNINSTALL,            _allowuninstall);
 873     solver_set_flag(_satSolver, SOLVER_FLAG_NO_UPDATEPROVIDE,           _noupdateprovide);
 874     solver_set_flag(_satSolver, SOLVER_FLAG_SPLITPROVIDES,              _dosplitprovides);
 875     solver_set_flag(_satSolver, SOLVER_FLAG_IGNORE_RECOMMENDED,         false);         // resolve recommended namespaces
 876     solver_set_flag(_satSolver, SOLVER_FLAG_ONLY_NAMESPACE_RECOMMENDED, _onlyRequires); //
 877
 878     sat::Pool::instance().prepare();
 879
 880     // Solve !
 881     MIL << "Starting solving for update...." << endl;
 882     MIL << *this;
 883     solver_solve( _satSolver, &(_jobQueue) );
 884     MIL << "....Solver end" << endl;
 885
 886     // copying solution back to zypp pool
 887     //-----------------------------------------
 888
 889     /*  solvables to be installed */
 890     Queue decisionq;
 891     queue_init(&decisionq);
 892     solver_get_decisionqueue(_satSolver, &decisionq);
 893     for (int i = 0; i < decisionq.count; i++)
 894     {
 895       Id p = decisionq.elements[i];
 896       if ( p < 0 )
 897         continue;
 898
 899       sat::Solvable solv { p };
 900       if ( ! solv || solv.isSystem() )
 901         continue;
 902
 903       SATSolutionToPool( PoolItem(solv), ResStatus::toBeInstalled, ResStatus::SOLVER );
 904     }
 905     queue_free(&decisionq);
 906
 907     /* solvables to be erased */
 908     for (int i = _satSolver->pool->installed->start; i < _satSolver->pool->installed->start + _satSolver->pool->installed->nsolvables; i++)
 909     {
 910       if (solver_get_decisionlevel(_satSolver, i) > 0)
 911           continue;
 912
 913       PoolItem poolItem( _pool.find( sat::Solvable(i) ) );
 914       if (poolItem) {
 915           // Check if this is an update
 916           CheckIfUpdate info( (sat::Solvable(i)) );
 917           invokeOnEach( _pool.byIdentBegin( poolItem ),
 918                         _pool.byIdentEnd( poolItem ),
 919                         resfilter::ByUninstalled(),                     // ByUninstalled
 920                         functor::functorRef<bool,PoolItem> (info) );
 921
 922           if (info.is_updated) {
 923               SATSolutionToPool (poolItem, ResStatus::toBeUninstalledDueToUpgrade , ResStatus::SOLVER);
 924           } else {
 925               SATSolutionToPool (poolItem, ResStatus::toBeUninstalled, ResStatus::SOLVER);
 926           }
 927       } else {
 928           ERR << "id " << i << " not found in ZYPP pool." << endl;
 929       }
 930     }
 931     MIL << "SATResolver::doUpdate() done" << endl;
 932 }
 933
 934
 935
 936 //----------------------------------------------------------------------------
 937 //----------------------------------------------------------------------------
 938 // error handling
 939 //----------------------------------------------------------------------------
 940 //----------------------------------------------------------------------------
 941
 942 //----------------------------------------------------------------------------
 943 // helper function
 944 //----------------------------------------------------------------------------
 945
 946 struct FindPackage : public resfilter::ResObjectFilterFunctor
 947 {
 948     ProblemSolutionCombi *problemSolution;
 949     TransactionKind action;
 950     FindPackage (ProblemSolutionCombi *p, const TransactionKind act)
 951        : problemSolution (p)
 952        , action (act)
 953         {
 954         }
 955
 956     bool operator()( PoolItem p)
 957    {
 958        problemSolution->addSingleAction (p, action);
 959        return true;
 960    }
 961 };
 962
 963
 964 //----------------------------------------------------------------------------
 965 // Checking if this solvable/item has a buddy which reflect the real
 966 // user visible description of an item
 967 // e.g. The release package has a buddy to the concerning product item.
 968 // This user want's the message "Product foo conflicts with product bar" and
 969 // NOT "package release-foo conflicts with package release-bar"
 970 // (ma: that's why we should map just packages to buddies, not vice versa)
 971 //----------------------------------------------------------------------------
 972 inline sat::Solvable mapBuddy( const PoolItem & item_r )
 973 {
 974   if ( item_r.satSolvable().isKind<Package>() )
 975   {
 976     sat::Solvable buddy = item_r.buddy();
 977     if ( buddy )
 978       return buddy;
 979   }
 980   return item_r.satSolvable();
 981 }
 982 inline sat::Solvable mapBuddy( sat::Solvable item_r )
 983 { return mapBuddy( PoolItem( item_r ) ); }
 984
 985 PoolItem SATResolver::mapItem ( const PoolItem & item )
 986 { return PoolItem( mapBuddy( item ) ); }
 987
 988 sat::Solvable SATResolver::mapSolvable ( const Id & id )
 989 { return mapBuddy( sat::Solvable(id) ); }
 990
 991 std::vector<std::string> SATResolver::SATgetCompleteProblemInfoStrings ( Id problem )
 992 {
 993   std::vector<std::string> ret;
 994   sat::Queue problems;
 995   solver_findallproblemrules( _satSolver, problem, problems );
 996
 997   bool nobad = false;
 998
 999   //filter out generic rule information if more explicit ones are available
1000   for ( sat::Queue::size_type i = 0; i < problems.size(); i++ ) {
1001     SolverRuleinfo ruleClass = solver_ruleclass( _satSolver, problems[i]);
1002     if ( ruleClass != SolverRuleinfo::SOLVER_RULE_UPDATE && ruleClass != SolverRuleinfo::SOLVER_RULE_JOB ) {
1003       nobad = true;
1004       break;
1005     }
1006   }
1007   for ( sat::Queue::size_type i = 0; i < problems.size(); i++ ) {
1008     SolverRuleinfo ruleClass = solver_ruleclass( _satSolver, problems[i]);
1009     if ( nobad && ( ruleClass == SolverRuleinfo::SOLVER_RULE_UPDATE || ruleClass == SolverRuleinfo::SOLVER_RULE_JOB ) ) {
1010       continue;
1011     }
1012
1013     std::string detail;
1014     Id ignore = 0;
1015     std::string pInfo = SATproblemRuleInfoString( problems[i], detail, ignore );
1016
1017     //we get the same string multiple times, reduce the noise
1018     if ( std::find( ret.begin(), ret.end(), pInfo ) == ret.end() )
1019       ret.push_back( pInfo );
1020   }
1021   return ret;
1022 }
1023
1024 string SATResolver::SATprobleminfoString(Id problem, string &detail, Id &ignoreId)
1025 {
1026   // FIXME: solver_findallproblemrules to get all rules for this problem
1027   // (the 'most relevabt' one returned by solver_findproblemrule is embedded
1028   Id probr = solver_findproblemrule(_satSolver, problem);
1029   return SATproblemRuleInfoString( probr, detail, ignoreId );
1030 }
1031
1032 std::string SATResolver::SATproblemRuleInfoString (Id probr, std::string &detail, Id &ignoreId)
1033 {
1034   string ret;
1035   sat::detail::CPool *pool = _satSolver->pool;
1036   Id dep, source, target;
1037   SolverRuleinfo type = solver_ruleinfo(_satSolver, probr, &source, &target, &dep);
1038
1039   ignoreId = 0;
1040
1041   sat::Solvable s = mapSolvable( source );
1042   sat::Solvable s2 = mapSolvable( target );
1043
1044   // @FIXME, these strings are a duplicate copied from the libsolv library
1045   // to provide translations. Instead of having duplicate code we should
1046   // translate those strings directly in libsolv
1047   switch ( type )
1048   {
1049       case SOLVER_RULE_DISTUPGRADE:
1050           ret = str::form (_("%s does not belong to a distupgrade repository"), s.asString().c_str());
1051           break;
1052       case SOLVER_RULE_INFARCH:
1053           ret = str::form (_("%s has inferior architecture"), s.asString().c_str());
1054           break;
1055       case SOLVER_RULE_UPDATE:
1056           ret = str::form (_("problem with installed package %s"), s.asString().c_str());
1057           break;
1058       case SOLVER_RULE_JOB:
1059           ret = _("conflicting requests");
1060           break;
1061       case SOLVER_RULE_PKG:
1062           ret = _("some dependency problem");
1063           break;
1064       case SOLVER_RULE_JOB_NOTHING_PROVIDES_DEP:
1065           ret = str::form (_("nothing provides requested %s"), pool_dep2str(pool, dep));
1066           detail += _("Have you enabled all requested repositories?");
1067           break;
1068       case SOLVER_RULE_JOB_UNKNOWN_PACKAGE:
1069           ret = str::form (_("package %s does not exist"), pool_dep2str(pool, dep));
1070           detail += _("Have you enabled all requested repositories?");
1071           break;
1072       case SOLVER_RULE_JOB_UNSUPPORTED:
1073           ret = _("unsupported request");
1074           break;
1075       case SOLVER_RULE_JOB_PROVIDED_BY_SYSTEM:
1076           ret = str::form (_("%s is provided by the system and cannot be erased"), pool_dep2str(pool, dep));
1077           break;
1078       case SOLVER_RULE_PKG_NOT_INSTALLABLE:
1079           ret = str::form (_("%s is not installable"), s.asString().c_str());
1080           break;
1081       case SOLVER_RULE_PKG_NOTHING_PROVIDES_DEP:
1082           ignoreId = source; // for setting weak dependencies
1083           ret = str::form (_("nothing provides %s needed by %s"), pool_dep2str(pool, dep), s.asString().c_str());
1084           break;
1085       case SOLVER_RULE_PKG_SAME_NAME:
1086           ret = str::form (_("cannot install both %s and %s"), s.asString().c_str(), s2.asString().c_str());
1087           break;
1088       case SOLVER_RULE_PKG_CONFLICTS:
1089           ret = str::form (_("%s conflicts with %s provided by %s"), s.asString().c_str(), pool_dep2str(pool, dep), s2.asString().c_str());
1090           break;
1091       case SOLVER_RULE_PKG_OBSOLETES:
1092           ret = str::form (_("%s obsoletes %s provided by %s"), s.asString().c_str(), pool_dep2str(pool, dep), s2.asString().c_str());
1093           break;
1094       case SOLVER_RULE_PKG_INSTALLED_OBSOLETES:
1095           ret = str::form (_("installed %s obsoletes %s provided by %s"), s.asString().c_str(), pool_dep2str(pool, dep), s2.asString().c_str());
1096           break;
1097       case SOLVER_RULE_PKG_SELF_CONFLICT:
1098           ret = str::form (_("solvable %s conflicts with %s provided by itself"), s.asString().c_str(), pool_dep2str(pool, dep));
1099           break;
1100       case SOLVER_RULE_PKG_REQUIRES: {
1101           ignoreId = source; // for setting weak dependencies
1102           Capability cap(dep);
1103           sat::WhatProvides possibleProviders(cap);
1104
1105           // check, if a provider will be deleted
1106           typedef list<PoolItem> ProviderList;
1107           ProviderList providerlistInstalled, providerlistUninstalled;
1108           for_( iter1, possibleProviders.begin(), possibleProviders.end() ) {
1109               PoolItem provider1 = ResPool::instance().find( *iter1 );
1110               // find pair of an installed/uninstalled item with the same NVR
1111               bool found = false;
1112               for_( iter2, possibleProviders.begin(), possibleProviders.end() ) {
1113                   PoolItem provider2 = ResPool::instance().find( *iter2 );
1114                   if (compareByNVR (provider1,provider2) == 0
1115                       && ( (provider1.status().isInstalled() && provider2.status().isUninstalled())
1116                           || (provider2.status().isInstalled() && provider1.status().isUninstalled()) ))  {
1117                       found = true;
1118                       break;
1119                   }
1120               }
1121               if (!found) {
1122                   if (provider1.status().isInstalled())
1123                       providerlistInstalled.push_back(provider1);
1124                   else
1125                       providerlistUninstalled.push_back(provider1);
1126               }
1127           }
1128
1129           ret = str::form (_("%s requires %s, but this requirement cannot be provided"), s.asString().c_str(), pool_dep2str(pool, dep));
1130           if (providerlistInstalled.size() > 0) {
1131               detail += _("deleted providers: ");
1132               for (ProviderList::const_iterator iter = providerlistInstalled.begin(); iter != providerlistInstalled.end(); iter++) {
1133                   if (iter == providerlistInstalled.begin())
1134                       detail += itemToString( *iter );
1135                   else
1136                       detail += "\n                   " + itemToString( mapItem(*iter) );
1137               }
1138           }
1139           if (providerlistUninstalled.size() > 0) {
1140               if (detail.size() > 0)
1141                   detail += _("\nnot installable providers: ");
1142               else
1143                   detail = _("not installable providers: ");
1144               for (ProviderList::const_iterator iter = providerlistUninstalled.begin(); iter != providerlistUninstalled.end(); iter++) {
1145                   if (iter == providerlistUninstalled.begin())
1146                       detail += itemToString( *iter );
1147                   else
1148                       detail += "\n                   " + itemToString( mapItem(*iter) );
1149               }
1150           }
1151           break;
1152       }
1153       default: {
1154           DBG << "Unknown rule type(" << type << ") going to query libsolv for rule information." << endl;
1155           ret = str::asString( ::solver_problemruleinfo2str( _satSolver, type, static_cast<Id>(s.id()), static_cast<Id>(s2.id()), dep ) );
1156           break;
1157       }
1158   }
1159   return ret;
1160 }
1161
1162 ResolverProblemList
1163 SATResolver::problems ()
1164 {
1165     ResolverProblemList resolverProblems;
1166     if (_satSolver && solver_problem_count(_satSolver)) {
1167         sat::detail::CPool *pool = _satSolver->pool;
1168         int pcnt;
1169         Id p, rp, what;
1170         Id problem, solution, element;
1171         sat::Solvable s, sd;
1172
1173         CapabilitySet system_requires = SystemCheck::instance().requiredSystemCap();
1174         CapabilitySet system_conflicts = SystemCheck::instance().conflictSystemCap();
1175
1176         MIL << "Encountered problems! Here are the solutions:\n" << endl;
1177         pcnt = 1;
1178         problem = 0;
1179         while ((problem = solver_next_problem(_satSolver, problem)) != 0) {
1180             MIL << "Problem " <<  pcnt++ << ":" << endl;
1181             MIL << "====================================" << endl;
1182             string detail;
1183             Id ignoreId;
1184             string whatString = SATprobleminfoString (problem,detail,ignoreId);
1185             MIL << whatString << endl;
1186             MIL << "------------------------------------" << endl;
1187             ResolverProblem_Ptr resolverProblem = new ResolverProblem (whatString, detail, SATgetCompleteProblemInfoStrings( problem ));
1188
1189             solution = 0;
1190             while ((solution = solver_next_solution(_satSolver, problem, solution)) != 0) {
1191                 element = 0;
1192                 ProblemSolutionCombi *problemSolution = new ProblemSolutionCombi;
1193                 while ((element = solver_next_solutionelement(_satSolver, problem, solution, element, &p, &rp)) != 0) {
1194                     if (p == SOLVER_SOLUTION_JOB) {
1195                         /* job, rp is index into job queue */
1196                         what = _jobQueue.elements[rp];
1197                         switch (_jobQueue.elements[rp-1]&(SOLVER_SELECTMASK|SOLVER_JOBMASK))
1198                         {
1199                             case SOLVER_INSTALL | SOLVER_SOLVABLE: {
1200                                 s = mapSolvable (what);
1201                                 PoolItem poolItem = _pool.find (s);
1202                                 if (poolItem) {
1203                                     if (pool->installed && s.get()->repo == pool->installed) {
1204                                         problemSolution->addSingleAction (poolItem, REMOVE);
1205                                         string description = str::form (_("remove lock to allow removal of %s"),  s.asString().c_str() );
1206                                         MIL << description << endl;
1207                                         problemSolution->addDescription (description);
1208                                     } else {
1209                                         problemSolution->addSingleAction (poolItem, KEEP);
1210                                         string description = str::form (_("do not install %s"), s.asString().c_str());
1211                                         MIL << description << endl;
1212                                         problemSolution->addDescription (description);
1213                                     }
1214                                 } else {
1215                                     ERR << "SOLVER_INSTALL_SOLVABLE: No item found for " << s.asString() << endl;
1216                                 }
1217                             }
1218                                 break;
1219                             case SOLVER_ERASE | SOLVER_SOLVABLE: {
1220                                 s = mapSolvable (what);
1221                                 PoolItem poolItem = _pool.find (s);
1222                                 if (poolItem) {
1223                                     if (pool->installed && s.get()->repo == pool->installed) {
1224                                         problemSolution->addSingleAction (poolItem, KEEP);
1225                                         string description = str::form (_("keep %s"), s.asString().c_str());
1226                                         MIL << description << endl;
1227                                         problemSolution->addDescription (description);
1228                                     } else {
1229                                         problemSolution->addSingleAction (poolItem, UNLOCK);
1230                                         string description = str::form (_("remove lock to allow installation of %s"), itemToString( poolItem ).c_str());
1231                                         MIL << description << endl;
1232                                         problemSolution->addDescription (description);
1233                                     }
1234                                 } else {
1235                                     ERR << "SOLVER_ERASE_SOLVABLE: No item found for " << s.asString() << endl;
1236                                 }
1237                             }
1238                                 break;
1239                             case SOLVER_INSTALL | SOLVER_SOLVABLE_NAME:
1240                                 {
1241                                 IdString ident( what );
1242                                 SolverQueueItemInstall_Ptr install =
1243                                     new SolverQueueItemInstall(_pool, ident.asString(), false );
1244                                 problemSolution->addSingleAction (install, REMOVE_SOLVE_QUEUE_ITEM);
1245
1246                                 string description = str::form (_("do not install %s"), ident.c_str() );
1247                                 MIL << description << endl;
1248                                 problemSolution->addDescription (description);
1249                                 }
1250                                 break;
1251                             case SOLVER_ERASE | SOLVER_SOLVABLE_NAME:
1252                                 {
1253                                 // As we do not know, if this request has come from resolvePool or
1254                                 // resolveQueue we will have to take care for both cases.
1255                                 IdString ident( what );
1256                                 FindPackage info (problemSolution, KEEP);
1257                                 invokeOnEach( _pool.byIdentBegin( ident ),
1258                                               _pool.byIdentEnd( ident ),
1259                                               functor::chain (resfilter::ByInstalled (),                        // ByInstalled
1260                                                               resfilter::ByTransact ()),                        // will be deinstalled
1261                                               functor::functorRef<bool,PoolItem> (info) );
1262
1263                                 SolverQueueItemDelete_Ptr del =
1264                                     new SolverQueueItemDelete(_pool, ident.asString(), false );
1265                                 problemSolution->addSingleAction (del, REMOVE_SOLVE_QUEUE_ITEM);
1266
1267                                 string description = str::form (_("keep %s"), ident.c_str());
1268                                 MIL << description << endl;
1269                                 problemSolution->addDescription (description);
1270                                 }
1271                                 break;
1272                             case SOLVER_INSTALL | SOLVER_SOLVABLE_PROVIDES:
1273                                 {
1274                                 problemSolution->addSingleAction (Capability(what), REMOVE_EXTRA_REQUIRE);
1275                                 string description = "";
1276
1277                                 // Checking if this problem solution would break your system
1278                                 if (system_requires.find(Capability(what)) != system_requires.end()) {
1279                                     // Show a better warning
1280                                     resolverProblem->setDetails( resolverProblem->description() + "\n" + resolverProblem->details() );
1281                                     resolverProblem->setDescription(_("This request will break your system!"));
1282                                     description = _("ignore the warning of a broken system");
1283                                     description += string(" (requires:")+pool_dep2str(pool, what)+")";
1284                                     MIL << description << endl;
1285                                     problemSolution->addFrontDescription (description);
1286                                 } else {
1287                                     description = str::form (_("do not ask to install a solvable providing %s"), pool_dep2str(pool, what));
1288                                     MIL << description << endl;
1289                                     problemSolution->addDescription (description);
1290                                 }
1291                                 }
1292                                 break;
1293                             case SOLVER_ERASE | SOLVER_SOLVABLE_PROVIDES:
1294                                 {
1295                                 problemSolution->addSingleAction (Capability(what), REMOVE_EXTRA_CONFLICT);
1296                                 string description = "";
1297
1298                                 // Checking if this problem solution would break your system
1299                                 if (system_conflicts.find(Capability(what)) != system_conflicts.end()) {
1300                                     // Show a better warning
1301                                     resolverProblem->setDetails( resolverProblem->description() + "\n" + resolverProblem->details() );
1302                                     resolverProblem->setDescription(_("This request will break your system!"));
1303                                     description = _("ignore the warning of a broken system");
1304                                     description += string(" (conflicts:")+pool_dep2str(pool, what)+")";
1305                                     MIL << description << endl;
1306                                     problemSolution->addFrontDescription (description);
1307
1308                                 } else {
1309                                     description = str::form (_("do not ask to delete all solvables providing %s"), pool_dep2str(pool, what));
1310                                     MIL << description << endl;
1311                                     problemSolution->addDescription (description);
1312                                 }
1313                                 }
1314                                 break;
1315                             case SOLVER_UPDATE | SOLVER_SOLVABLE:
1316                                 {
1317                                 s = mapSolvable (what);
1318                                 PoolItem poolItem = _pool.find (s);
1319                                 if (poolItem) {
1320                                     if (pool->installed && s.get()->repo == pool->installed) {
1321                                         problemSolution->addSingleAction (poolItem, KEEP);
1322                                         string description = str::form (_("do not install most recent version of %s"), s.asString().c_str());
1323                                         MIL << description << endl;
1324                                         problemSolution->addDescription (description);
1325                                     } else {
1326                                         ERR << "SOLVER_INSTALL_SOLVABLE_UPDATE " << poolItem << " is not selected for installation" << endl;
1327                                     }
1328                                 } else {
1329                                     ERR << "SOLVER_INSTALL_SOLVABLE_UPDATE: No item found for " << s.asString() << endl;
1330                                 }
1331                                 }
1332                                 break;
1333                             default:
1334                                 MIL << "- do something different" << endl;
1335                                 ERR << "No valid solution available" << endl;
1336                                 break;
1337                         }
1338                     } else if (p == SOLVER_SOLUTION_INFARCH) {
1339                         s = mapSolvable (rp);
1340                         PoolItem poolItem = _pool.find (s);
1341                         if (pool->installed && s.get()->repo == pool->installed) {
1342                             problemSolution->addSingleAction (poolItem, LOCK);
1343                             string description = str::form (_("keep %s despite the inferior architecture"), s.asString().c_str());
1344                             MIL << description << endl;
1345                             problemSolution->addDescription (description);
1346                         } else {
1347                             problemSolution->addSingleAction (poolItem, INSTALL);
1348                             string description = str::form (_("install %s despite the inferior architecture"), s.asString().c_str());
1349                             MIL << description << endl;
1350                             problemSolution->addDescription (description);
1351                         }
1352                     } else if (p == SOLVER_SOLUTION_DISTUPGRADE) {
1353                         s = mapSolvable (rp);
1354                         PoolItem poolItem = _pool.find (s);
1355                         if (pool->installed && s.get()->repo == pool->installed) {
1356                             problemSolution->addSingleAction (poolItem, LOCK);
1357                             string description = str::form (_("keep obsolete %s"), s.asString().c_str());
1358                             MIL << description << endl;
1359                             problemSolution->addDescription (description);
1360                         } else {
1361                             problemSolution->addSingleAction (poolItem, INSTALL);
1362                             string description = str::form (_("install %s from excluded repository"), s.asString().c_str());
1363                             MIL << description << endl;
1364                             problemSolution->addDescription (description);
1365                         }
1366                     } else if ( p == SOLVER_SOLUTION_BLACK ) {
1367                         // Allow to install a blacklisted package (PTF, retracted,...).
1368                         // For not-installed items only
1369                         s = mapSolvable (rp);
1370                         PoolItem poolItem = _pool.find (s);
1371
1372                         problemSolution->addSingleAction (poolItem, INSTALL);
1373                         string description;
1374                         if ( s.isRetracted() ) {
1375                           // translator: %1% is a package name
1376                           description = str::Format(_("install %1% although it has been retracted")) % s.asString();
1377                         } else if ( s.isPtf() ) {
1378                           // translator: %1% is a package name
1379                           description = str::Format(_("allow to install the PTF %1%")) % s.asString();
1380                         } else {
1381                           // translator: %1% is a package name
1382                           description = str::Format(_("install %1% although it is blacklisted")) % s.asString();
1383                         }
1384                         MIL << description << endl;
1385                         problemSolution->addDescription( description );
1386                     } else if ( p > 0 ) {
1387                         /* policy, replace p with rp */
1388                         s = mapSolvable (p);
1389                         PoolItem itemFrom = _pool.find (s);
1390                         if (rp)
1391                         {
1392                             int gotone = 0;
1393
1394                             sd = mapSolvable (rp);
1395                             PoolItem itemTo = _pool.find (sd);
1396                             if (itemFrom && itemTo) {
1397                                 problemSolution->addSingleAction (itemTo, INSTALL);
1398                                 int illegal = policy_is_illegal(_satSolver, s.get(), sd.get(), 0);
1399
1400                                 if ((illegal & POLICY_ILLEGAL_DOWNGRADE) != 0)
1401                                 {
1402                                     string description = str::form (_("downgrade of %s to %s"), s.asString().c_str(), sd.asString().c_str());
1403                                     MIL << description << endl;
1404                                     problemSolution->addDescription (description);
1405                                     gotone = 1;
1406                                 }
1407                                 if ((illegal & POLICY_ILLEGAL_ARCHCHANGE) != 0)
1408                                 {
1409                                     string description = str::form (_("architecture change of %s to %s"), s.asString().c_str(), sd.asString().c_str());
1410                                     MIL << description << endl;
1411                                     problemSolution->addDescription (description);
1412                                     gotone = 1;
1413                                 }
1414                                 if ((illegal & POLICY_ILLEGAL_VENDORCHANGE) != 0)
1415                                 {
1416                                     IdString s_vendor( s.vendor() );
1417                                     IdString sd_vendor( sd.vendor() );
1418                                     string description = str::form (_("install %s (with vendor change)\n  %s  -->  %s") ,
1419                                                                     sd.asString().c_str(),
1420                                                                     ( s_vendor ? s_vendor.c_str() : " (no vendor) " ),
1421                                                                     ( sd_vendor ? sd_vendor.c_str() : " (no vendor) " ) );
1422                                     MIL << description << endl;
1423                                     problemSolution->addDescription (description);
1424                                     gotone = 1;
1425                                 }
1426                                 if (!gotone) {
1427                                     string description = str::form (_("replacement of %s with %s"), s.asString().c_str(), sd.asString().c_str());
1428                                     MIL << description << endl;
1429                                     problemSolution->addDescription (description);
1430                                 }
1431                             } else {
1432                                 ERR << s.asString() << " or "  << sd.asString() << " not found" << endl;
1433                             }
1434                         }
1435                         else
1436                         {
1437                             if (itemFrom) {
1438                                 string description = str::form (_("deinstallation of %s"), s.asString().c_str());
1439                                 MIL << description << endl;
1440                                 problemSolution->addDescription (description);
1441                                 problemSolution->addSingleAction (itemFrom, REMOVE);
1442                             }
1443                         }
1444                     }
1445                     else
1446                     {
1447                       INT << "Unknown solution " << p << endl;
1448                     }
1449
1450                 }
1451                 resolverProblem->addSolution (problemSolution,
1452                                               problemSolution->actionCount() > 1 ? true : false); // Solutions with more than 1 action will be shown first.
1453                 MIL << "------------------------------------" << endl;
1454             }
1455
1456             if (ignoreId > 0) {
1457                 // There is a possibility to ignore this error by setting weak dependencies
1458                 PoolItem item = _pool.find (sat::Solvable(ignoreId));
1459                 ProblemSolutionIgnore *problemSolution = new ProblemSolutionIgnore(item);
1460                 resolverProblem->addSolution (problemSolution,
1461                                               false); // Solutions will be shown at the end
1462                 MIL << "ignore some dependencies of " << item << endl;
1463                 MIL << "------------------------------------" << endl;
1464             }
1465
1466             // save problem
1467             resolverProblems.push_back (resolverProblem);
1468         }
1469     }
1470     return resolverProblems;
1471 }
1472
1473 void SATResolver::applySolutions( const ProblemSolutionList & solutions )
1474 { Resolver( _pool ).applySolutions( solutions ); }
1475
1476 void SATResolver::setLocks()
1477 {
1478     unsigned icnt = 0;
1479     unsigned acnt = 0;
1480
1481     for (PoolItemList::const_iterator iter = _items_to_lock.begin(); iter != _items_to_lock.end(); ++iter) {
1482         sat::detail::SolvableIdType ident( (*iter)->satSolvable().id() );
1483         if (iter->status().isInstalled()) {
1484             ++icnt;
1485             queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE );
1486             queue_push( &(_jobQueue), ident );
1487         } else {
1488             ++acnt;
1489             queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE | MAYBE_CLEANDEPS );
1490             queue_push( &(_jobQueue), ident );
1491         }
1492     }
1493     MIL << "Locked " << icnt << " installed items and " << acnt << " NOT installed items." << endl;
1494
1495     ///////////////////////////////////////////////////////////////////
1496     // Weak locks: Ignore if an item with this name is already installed.
1497     // If it's not installed try to keep it this way using a weak delete
1498     ///////////////////////////////////////////////////////////////////
1499     std::set<IdString> unifiedByName;
1500     for (PoolItemList::const_iterator iter = _items_to_keep.begin(); iter != _items_to_keep.end(); ++iter) {
1501       IdString ident( (*iter)->satSolvable().ident() );
1502       if ( unifiedByName.insert( ident ).second )
1503       {
1504         if ( ! ui::Selectable::get( *iter )->hasInstalledObj() )
1505         {
1506           MIL << "Keep NOT installed name " << ident << " (" << *iter << ")" << endl;
1507           queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE_NAME | SOLVER_WEAK | MAYBE_CLEANDEPS );
1508           queue_push( &(_jobQueue), ident.id() );
1509         }
1510       }
1511     }
1512 }
1513
1514 void SATResolver::setSystemRequirements()
1515 {
1516     CapabilitySet system_requires = SystemCheck::instance().requiredSystemCap();
1517     CapabilitySet system_conflicts = SystemCheck::instance().conflictSystemCap();
1518
1519     for (CapabilitySet::const_iterator iter = system_requires.begin(); iter != system_requires.end(); ++iter) {
1520         queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE_PROVIDES );
1521         queue_push( &(_jobQueue), iter->id() );
1522         MIL << "SYSTEM Requires " << *iter << endl;
1523     }
1524
1525     for (CapabilitySet::const_iterator iter = system_conflicts.begin(); iter != system_conflicts.end(); ++iter) {
1526         queue_push( &(_jobQueue), SOLVER_ERASE | SOLVER_SOLVABLE_PROVIDES | MAYBE_CLEANDEPS );
1527         queue_push( &(_jobQueue), iter->id() );
1528         MIL << "SYSTEM Conflicts " << *iter << endl;
1529     }
1530
1531     // Lock the architecture of the running systems rpm
1532     // package on distupgrade.
1533     if ( _distupgrade && ZConfig::instance().systemRoot() == "/" )
1534     {
1535       ResPool pool( ResPool::instance() );
1536       IdString rpm( "rpm" );
1537       for_( it, pool.byIdentBegin(rpm), pool.byIdentEnd(rpm) )
1538       {
1539         if ( (*it)->isSystem() )
1540         {
1541           Capability archrule( (*it)->arch(), rpm.c_str(), Capability::PARSED );
1542           queue_push( &(_jobQueue), SOLVER_INSTALL | SOLVER_SOLVABLE_NAME | SOLVER_ESSENTIAL );
1543           queue_push( &(_jobQueue), archrule.id() );
1544
1545         }
1546       }
1547     }
1548 }
1549
1550 sat::StringQueue SATResolver::autoInstalled() const
1551 {
1552   sat::StringQueue ret;
1553   if ( _satSolver )
1554     ::solver_get_userinstalled( _satSolver, ret, GET_USERINSTALLED_NAMES|GET_USERINSTALLED_INVERTED );
1555   return ret;
1556 }
1557
1558 sat::StringQueue SATResolver::userInstalled() const
1559 {
1560   sat::StringQueue ret;
1561   if ( _satSolver )
1562     ::solver_get_userinstalled( _satSolver, ret, GET_USERINSTALLED_NAMES );
1563   return ret;
1564 }
1565
1566
1567 ///////////////////////////////////////////////////////////////////
1568 };// namespace detail
1569     /////////////////////////////////////////////////////////////////////
1570     /////////////////////////////////////////////////////////////////////
1571   };// namespace solver
1572   ///////////////////////////////////////////////////////////////////////
1573   ///////////////////////////////////////////////////////////////////////
1574 };// namespace zypp
1575 /////////////////////////////////////////////////////////////////////////
1576