apt-pkg/packagemanager.cc

   1 // -*- mode: cpp; mode: fold -*-
   2 // Description                                                          /*{{{*/
   3 // $Id: packagemanager.cc,v 1.30 2003/04/27 03:04:15 doogie Exp $
   4 /* ######################################################################
   5
   6    Package Manager - Abstacts the package manager
   7
   8    More work is needed in the area of transitioning provides, ie exim
   9    replacing smail. This can cause interesing side effects.
  10
  11    Other cases involving conflicts+replaces should be tested.
  12
  13    ##################################################################### */
  14                                                                         /*}}}*/
  15 // Include Files                                                        /*{{{*/
  16 #include <apt-pkg/packagemanager.h>
  17 #include <apt-pkg/orderlist.h>
  18 #include <apt-pkg/depcache.h>
  19 #include <apt-pkg/error.h>
  20 #include <apt-pkg/version.h>
  21 #include <apt-pkg/acquire-item.h>
  22 #include <apt-pkg/algorithms.h>
  23 #include <apt-pkg/configuration.h>
  24 #include <apt-pkg/sptr.h>
  25
  26 #include <apti18n.h>
  27 #include <iostream>
  28 #include <fcntl.h>
  29                                                                         /*}}}*/
  30 using namespace std;
  31
  32 // PM::PackageManager - Constructor                                     /*{{{*/
  33 // ---------------------------------------------------------------------
  34 /* */
  35 pkgPackageManager::pkgPackageManager(pkgDepCache *pCache) : Cache(*pCache)
  36 {
  37    FileNames = new string[Cache.Head().PackageCount];
  38    List = 0;
  39    Debug = _config->FindB("Debug::pkgPackageManager",false);
  40 }
  41                                                                         /*}}}*/
  42 // PM::PackageManager - Destructor                                      /*{{{*/
  43 // ---------------------------------------------------------------------
  44 /* */
  45 pkgPackageManager::~pkgPackageManager()
  46 {
  47    delete List;
  48    delete [] FileNames;
  49 }
  50                                                                         /*}}}*/
  51 // PM::GetArchives - Queue the archives for download                    /*{{{*/
  52 // ---------------------------------------------------------------------
  53 /* */
  54 bool pkgPackageManager::GetArchives(pkgAcquire *Owner,pkgSourceList *Sources,
  55                                     pkgRecords *Recs)
  56 {
  57    if (CreateOrderList() == false)
  58       return false;
  59
  60    bool const ordering =
  61         _config->FindB("PackageManager::UnpackAll",true) ?
  62                 List->OrderUnpack() : List->OrderCritical();
  63    if (ordering == false)
  64       return _error->Error("Internal ordering error");
  65
  66    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
  67    {
  68       PkgIterator Pkg(Cache,*I);
  69       FileNames[Pkg->ID] = string();
  70
  71       // Skip packages to erase
  72       if (Cache[Pkg].Delete() == true)
  73          continue;
  74
  75       // Skip Packages that need configure only.
  76       if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
  77           Cache[Pkg].Keep() == true)
  78          continue;
  79
  80       // Skip already processed packages
  81       if (List->IsNow(Pkg) == false)
  82          continue;
  83
  84       if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == true)
  85          continue;
  86
  87       new pkgAcqArchive(Owner,Sources,Recs,Cache[Pkg].InstVerIter(Cache),
  88                         FileNames[Pkg->ID]);
  89    }
  90
  91    return true;
  92 }
  93                                                                         /*}}}*/
  94 // PM::FixMissing - Keep all missing packages                           /*{{{*/
  95 // ---------------------------------------------------------------------
  96 /* This is called to correct the installation when packages could not
  97    be downloaded. */
  98 bool pkgPackageManager::FixMissing()
  99 {
 100    pkgDepCache::ActionGroup group(Cache);
 101    pkgProblemResolver Resolve(&Cache);
 102    List->SetFileList(FileNames);
 103
 104    bool Bad = false;
 105    for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
 106    {
 107       if (List->IsMissing(I) == false)
 108          continue;
 109
 110       // Okay, this file is missing and we need it. Mark it for keep
 111       Bad = true;
 112       Cache.MarkKeep(I, false, false);
 113    }
 114
 115    // We have to empty the list otherwise it will not have the new changes
 116    delete List;
 117    List = 0;
 118
 119    if (Bad == false)
 120       return true;
 121
 122    // Now downgrade everything that is broken
 123    return Resolve.ResolveByKeep() == true && Cache.BrokenCount() == 0;
 124 }
 125                                                                         /*}}}*/
 126 // PM::ImmediateAdd - Add the immediate flag recursivly                 /*{{{*/
 127 // ---------------------------------------------------------------------
 128 /* This adds the immediate flag to the pkg and recursively to the
 129    dependendies
 130  */
 131 void pkgPackageManager::ImmediateAdd(PkgIterator I, bool UseInstallVer, unsigned const int &Depth)
 132 {
 133    DepIterator D;
 134
 135    if(UseInstallVer)
 136    {
 137       if(Cache[I].InstallVer == 0)
 138          return;
 139       D = Cache[I].InstVerIter(Cache).DependsList();
 140    } else {
 141       if (I->CurrentVer == 0)
 142          return;
 143       D = I.CurrentVer().DependsList();
 144    }
 145
 146    for ( /* nothing */  ; D.end() == false; D++)
 147       if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
 148       {
 149          if(!List->IsFlag(D.TargetPkg(), pkgOrderList::Immediate))
 150          {
 151             if(Debug)
 152                clog << OutputInDepth(Depth) << "ImmediateAdd(): Adding Immediate flag to " << D.TargetPkg() << " cause of " << D.DepType() << " " << I.Name() << endl;
 153             List->Flag(D.TargetPkg(),pkgOrderList::Immediate);
 154             ImmediateAdd(D.TargetPkg(), UseInstallVer, Depth + 1);
 155          }
 156       }
 157    return;
 158 }
 159                                                                         /*}}}*/
 160 // PM::CreateOrderList - Create the ordering class                      /*{{{*/
 161 // ---------------------------------------------------------------------
 162 /* This populates the ordering list with all the packages that are
 163    going to change. */
 164 bool pkgPackageManager::CreateOrderList()
 165 {
 166    if (List != 0)
 167       return true;
 168
 169    delete List;
 170    List = new pkgOrderList(&Cache);
 171
 172    static bool const NoImmConfigure = !_config->FindB("APT::Immediate-Configure",true);
 173
 174    // Generate the list of affected packages and sort it
 175    for (PkgIterator I = Cache.PkgBegin(); I.end() == false; I++)
 176    {
 177       // Ignore no-version packages
 178       if (I->VersionList == 0)
 179          continue;
 180
 181       // Mark the package and its dependends for immediate configuration
 182       if (((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential ||
 183            (I->Flags & pkgCache::Flag::Important) == pkgCache::Flag::Important) &&
 184           NoImmConfigure == false)
 185       {
 186          if(Debug)
 187             clog << "CreateOrderList(): Adding Immediate flag for " << I.Name() << endl;
 188          List->Flag(I,pkgOrderList::Immediate);
 189
 190          // Look for other install packages to make immediate configurea
 191          ImmediateAdd(I, true);
 192
 193          // And again with the current version.
 194          ImmediateAdd(I, false);
 195       }
 196
 197       // Not interesting
 198       if ((Cache[I].Keep() == true ||
 199           Cache[I].InstVerIter(Cache) == I.CurrentVer()) &&
 200           I.State() == pkgCache::PkgIterator::NeedsNothing &&
 201           (Cache[I].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall &&
 202           (I.Purge() != false || Cache[I].Mode != pkgDepCache::ModeDelete ||
 203            (Cache[I].iFlags & pkgDepCache::Purge) != pkgDepCache::Purge))
 204          continue;
 205
 206       // Append it to the list
 207       List->push_back(I);
 208    }
 209
 210    return true;
 211 }
 212                                                                         /*}}}*/
 213 // PM::DepAlwaysTrue - Returns true if this dep is irrelevent           /*{{{*/
 214 // ---------------------------------------------------------------------
 215 /* The restriction on provides is to eliminate the case when provides
 216    are transitioning between valid states [ie exim to smail] */
 217 bool pkgPackageManager::DepAlwaysTrue(DepIterator D)
 218 {
 219    if (D.TargetPkg()->ProvidesList != 0)
 220       return false;
 221
 222    if ((Cache[D] & pkgDepCache::DepInstall) != 0 &&
 223        (Cache[D] & pkgDepCache::DepNow) != 0)
 224       return true;
 225    return false;
 226 }
 227                                                                         /*}}}*/
 228 // PM::CheckRConflicts - Look for reverse conflicts                     /*{{{*/
 229 // ---------------------------------------------------------------------
 230 /* This looks over the reverses for a conflicts line that needs early
 231    removal. */
 232 bool pkgPackageManager::CheckRConflicts(PkgIterator Pkg,DepIterator D,
 233                                         const char *Ver)
 234 {
 235    for (;D.end() == false; D++)
 236    {
 237       if (D->Type != pkgCache::Dep::Conflicts &&
 238           D->Type != pkgCache::Dep::Obsoletes)
 239          continue;
 240
 241       // The package hasnt been changed
 242       if (List->IsNow(Pkg) == false)
 243          continue;
 244
 245       // Ignore self conflicts, ignore conflicts from irrelevent versions
 246       if (D.ParentPkg() == Pkg || D.ParentVer() != D.ParentPkg().CurrentVer())
 247          continue;
 248
 249       if (Cache.VS().CheckDep(Ver,D->CompareOp,D.TargetVer()) == false)
 250          continue;
 251
 252       if (EarlyRemove(D.ParentPkg()) == false)
 253          return _error->Error("Reverse conflicts early remove for package '%s' failed",
 254                               Pkg.Name());
 255    }
 256    return true;
 257 }
 258                                                                         /*}}}*/
 259 // PM::ConfigureAll - Run the all out configuration                     /*{{{*/
 260 // ---------------------------------------------------------------------
 261 /* This configures every package. It is assumed they are all unpacked and
 262    that the final configuration is valid. */
 263 bool pkgPackageManager::ConfigureAll()
 264 {
 265    pkgOrderList OList(&Cache);
 266
 267    // Populate the order list
 268    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
 269       if (List->IsFlag(pkgCache::PkgIterator(Cache,*I),
 270                        pkgOrderList::UnPacked) == true)
 271          OList.push_back(*I);
 272
 273    if (OList.OrderConfigure() == false)
 274       return false;
 275
 276    std::string const conf = _config->Find("PackageManager::Configure","all");
 277    bool const ConfigurePkgs = (conf == "all");
 278
 279    // Perform the configuring
 280    for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
 281    {
 282       PkgIterator Pkg(Cache,*I);
 283
 284       if (ConfigurePkgs == true &&
 285           pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
 286           Configure(Pkg) == false)
 287          return false;
 288
 289       List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
 290    }
 291
 292    return true;
 293 }
 294                                                                         /*}}}*/
 295 // PM::SmartConfigure - Perform immediate configuration of the pkg      /*{{{*/
 296 // ---------------------------------------------------------------------
 297 /* This routine scheduals the configuration of the given package and all
 298    of it's dependents. */
 299 bool pkgPackageManager::SmartConfigure(PkgIterator Pkg)
 300 {
 301    if (Debug == true)
 302       clog << "SmartConfigure " << Pkg.Name() << endl;
 303
 304    pkgOrderList OList(&Cache);
 305
 306    if (DepAdd(OList,Pkg) == false)
 307       return false;
 308
 309    static std::string const conf = _config->Find("PackageManager::Configure","all");
 310    static bool const ConfigurePkgs = (conf == "all" || conf == "smart");
 311
 312    if (ConfigurePkgs == true)
 313       if (OList.OrderConfigure() == false)
 314          return false;
 315
 316    // Perform the configuring
 317    for (pkgOrderList::iterator I = OList.begin(); I != OList.end(); I++)
 318    {
 319       PkgIterator Pkg(Cache,*I);
 320
 321       if (ConfigurePkgs == true &&
 322           pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
 323           Configure(Pkg) == false)
 324          return false;
 325
 326       List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
 327    }
 328
 329    // Sanity Check
 330    if (List->IsFlag(Pkg,pkgOrderList::Configured) == false)
 331       return _error->Error(_("Could not perform immediate configuration on '%s'."
 332                         "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),1);
 333
 334    return true;
 335 }
 336                                                                         /*}}}*/
 337 // PM::DepAdd - Add all dependents to the oder list                     /*{{{*/
 338 // ---------------------------------------------------------------------
 339 /* This recursively adds all dependents to the order list */
 340 bool pkgPackageManager::DepAdd(pkgOrderList &OList,PkgIterator Pkg,int Depth)
 341 {
 342    if (OList.IsFlag(Pkg,pkgOrderList::Added) == true)
 343       return true;
 344    if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
 345       return true;
 346    if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == false)
 347       return false;
 348
 349    if (Debug)
 350       std::clog << OutputInDepth(Depth) << "DepAdd: " << Pkg.Name() << std::endl;
 351
 352    // Put the package on the list
 353    OList.push_back(Pkg);
 354    OList.Flag(Pkg,pkgOrderList::Added);
 355    Depth++;
 356
 357    // Check the dependencies to see if they are all satisfied.
 358    bool Bad = false;
 359    for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
 360    {
 361       if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
 362       {
 363          D++;
 364          continue;
 365       }
 366
 367       // Grok or groups
 368       Bad = true;
 369       for (bool LastOR = true; D.end() == false && LastOR == true; D++)
 370       {
 371          LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
 372
 373          if (Bad == false)
 374             continue;
 375
 376          SPtrArray<Version *> VList = D.AllTargets();
 377          for (Version **I = VList; *I != 0 && Bad == true; I++)
 378          {
 379             VerIterator Ver(Cache,*I);
 380             PkgIterator Pkg = Ver.ParentPkg();
 381
 382             // See if the current version is ok
 383             if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
 384                 Pkg.State() == PkgIterator::NeedsNothing)
 385             {
 386                Bad = false;
 387                continue;
 388             }
 389
 390             // Not the install version
 391             if (Cache[Pkg].InstallVer != *I ||
 392                 (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
 393                continue;
 394
 395             if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
 396                Bad = !DepAdd(OList,Pkg,Depth);
 397             if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
 398                Bad = false;
 399          }
 400       }
 401
 402       if (Bad == true)
 403       {
 404          if (Debug)
 405             std::clog << OutputInDepth(Depth) << "DepAdd FAILS on: " << Pkg.Name() << std::endl;
 406          OList.Flag(Pkg,0,pkgOrderList::Added);
 407          OList.pop_back();
 408          Depth--;
 409          return false;
 410       }
 411    }
 412
 413    Depth--;
 414    return true;
 415 }
 416                                                                         /*}}}*/
 417 // PM::EarlyRemove - Perform removal of packages before their time      /*{{{*/
 418 // ---------------------------------------------------------------------
 419 /* This is called to deal with conflicts arising from unpacking */
 420 bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
 421 {
 422    if (List->IsNow(Pkg) == false)
 423       return true;
 424
 425    // Already removed it
 426    if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
 427       return true;
 428
 429    // Woops, it will not be re-installed!
 430    if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
 431       return false;
 432
 433    // Essential packages get special treatment
 434    bool IsEssential = false;
 435    if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
 436       IsEssential = true;
 437
 438    /* Check for packages that are the dependents of essential packages and
 439       promote them too */
 440    if (Pkg->CurrentVer != 0)
 441    {
 442       for (DepIterator D = Pkg.RevDependsList(); D.end() == false &&
 443            IsEssential == false; D++)
 444          if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
 445             if ((D.ParentPkg()->Flags & pkgCache::Flag::Essential) != 0)
 446                IsEssential = true;
 447    }
 448
 449    if (IsEssential == true)
 450    {
 451       if (_config->FindB("APT::Force-LoopBreak",false) == false)
 452          return _error->Error(_("This installation run will require temporarily "
 453                                 "removing the essential package %s due to a "
 454                                 "Conflicts/Pre-Depends loop. This is often bad, "
 455                                 "but if you really want to do it, activate the "
 456                                 "APT::Force-LoopBreak option."),Pkg.Name());
 457    }
 458
 459    bool Res = SmartRemove(Pkg);
 460    if (Cache[Pkg].Delete() == false)
 461       List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
 462
 463    return Res;
 464 }
 465                                                                         /*}}}*/
 466 // PM::SmartRemove - Removal Helper                                     /*{{{*/
 467 // ---------------------------------------------------------------------
 468 /* */
 469 bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
 470 {
 471    if (List->IsNow(Pkg) == false)
 472       return true;
 473
 474    List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
 475
 476    if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
 477       return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
 478    else
 479       return SmartRemove(Pkg.Group().FindPkg("all"));
 480    return true;
 481 }
 482                                                                         /*}}}*/
 483 // PM::SmartUnPack - Install helper                                     /*{{{*/
 484 // ---------------------------------------------------------------------
 485 /* This performs the task of handling pre-depends. */
 486 bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
 487 {
 488    // Check if it is already unpacked
 489    if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
 490        Cache[Pkg].Keep() == true)
 491    {
 492       List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
 493       if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
 494          if (SmartConfigure(Pkg) == false)
 495             return _error->Error(_("Could not perform immediate configuration on already unpacked '%s'."
 496                         "Please see man 5 apt.conf under APT::Immediate-Configure for details."),Pkg.Name());
 497       return true;
 498    }
 499
 500    /* See if this packages install version has any predependencies
 501       that are not met by 'now' packages. */
 502    for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList();
 503         D.end() == false; )
 504    {
 505       // Compute a single dependency element (glob or)
 506       pkgCache::DepIterator Start;
 507       pkgCache::DepIterator End;
 508       D.GlobOr(Start,End);
 509
 510       while (End->Type == pkgCache::Dep::PreDepends)
 511       {
 512          if (Debug == true)
 513             clog << "PreDepends order for " << Pkg.Name() << std::endl;
 514
 515          // Look for possible ok targets.
 516          SPtrArray<Version *> VList = Start.AllTargets();
 517          bool Bad = true;
 518          for (Version **I = VList; *I != 0 && Bad == true; I++)
 519          {
 520             VerIterator Ver(Cache,*I);
 521             PkgIterator Pkg = Ver.ParentPkg();
 522
 523             // See if the current version is ok
 524             if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
 525                 Pkg.State() == PkgIterator::NeedsNothing)
 526             {
 527                Bad = false;
 528                if (Debug == true)
 529                   clog << "Found ok package " << Pkg.Name() << endl;
 530                continue;
 531             }
 532          }
 533
 534          // Look for something that could be configured.
 535          for (Version **I = VList; *I != 0 && Bad == true; I++)
 536          {
 537             VerIterator Ver(Cache,*I);
 538             PkgIterator Pkg = Ver.ParentPkg();
 539
 540             // Not the install version
 541             if (Cache[Pkg].InstallVer != *I ||
 542                 (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
 543                continue;
 544
 545             if (Debug == true)
 546                clog << "Trying to SmartConfigure " << Pkg.Name() << endl;
 547             Bad = !SmartConfigure(Pkg);
 548          }
 549
 550          /* If this or element did not match then continue on to the
 551             next or element until a matching element is found */
 552          if (Bad == true)
 553          {
 554             // This triggers if someone make a pre-depends/depend loop.
 555             if (Start == End)
 556                return _error->Error("Couldn't configure pre-depend %s for %s, "
 557                                     "probably a dependency cycle.",
 558                                     End.TargetPkg().Name(),Pkg.Name());
 559             Start++;
 560          }
 561          else
 562             break;
 563       }
 564
 565       if (End->Type == pkgCache::Dep::Conflicts ||
 566           End->Type == pkgCache::Dep::Obsoletes)
 567       {
 568          /* Look for conflicts. Two packages that are both in the install
 569             state cannot conflict so we don't check.. */
 570          SPtrArray<Version *> VList = End.AllTargets();
 571          for (Version **I = VList; *I != 0; I++)
 572          {
 573             VerIterator Ver(Cache,*I);
 574             PkgIterator Pkg = Ver.ParentPkg();
 575
 576             // See if the current version is conflicting
 577             if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
 578             {
 579                if (EarlyRemove(Pkg) == false)
 580                   return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
 581             }
 582          }
 583       }
 584    }
 585
 586    // Check for reverse conflicts.
 587    if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
 588                    Cache[Pkg].InstVerIter(Cache).VerStr()) == false)
 589       return false;
 590
 591    for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList();
 592         P.end() == false; P++)
 593       CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
 594
 595    if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
 596    {
 597       if(Install(Pkg,FileNames[Pkg->ID]) == false)
 598          return false;
 599    } else {
 600       // Pseudo packages will not be unpacked - instead we will do this
 601       // for the "real" package, but only once and if it is already
 602       // configured we don't need to unpack it again…
 603       PkgIterator const P = Pkg.Group().FindPkg("all");
 604       if (List->IsFlag(P,pkgOrderList::UnPacked) != true &&
 605           List->IsFlag(P,pkgOrderList::Configured) != true) {
 606          if (SmartUnPack(P) == false)
 607             return false;
 608       }
 609    }
 610    List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
 611
 612    // Perform immedate configuration of the package.
 613    if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
 614       if (SmartConfigure(Pkg) == false)
 615          return _error->Error(_("Could not perform immediate configuration on '%s'."
 616                         "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),2);
 617
 618    return true;
 619 }
 620                                                                         /*}}}*/
 621 // PM::OrderInstall - Installation ordering routine                     /*{{{*/
 622 // ---------------------------------------------------------------------
 623 /* */
 624 pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
 625 {
 626    if (CreateOrderList() == false)
 627       return Failed;
 628
 629    Reset();
 630
 631    if (Debug == true)
 632       clog << "Beginning to order" << endl;
 633
 634    bool const ordering =
 635         _config->FindB("PackageManager::UnpackAll",true) ?
 636                 List->OrderUnpack(FileNames) : List->OrderCritical();
 637    if (ordering == false)
 638    {
 639       _error->Error("Internal ordering error");
 640       return Failed;
 641    }
 642
 643    if (Debug == true)
 644       clog << "Done ordering" << endl;
 645
 646    bool DoneSomething = false;
 647    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
 648    {
 649       PkgIterator Pkg(Cache,*I);
 650
 651       if (List->IsNow(Pkg) == false)
 652       {
 653          if (Debug == true)
 654             clog << "Skipping already done " << Pkg.Name() << endl;
 655          continue;
 656       }
 657
 658       if (List->IsMissing(Pkg) == true)
 659       {
 660          if (Debug == true)
 661             clog << "Sequence completed at " << Pkg.Name() << endl;
 662          if (DoneSomething == false)
 663          {
 664             _error->Error("Internal Error, ordering was unable to handle the media swap");
 665             return Failed;
 666          }
 667          return Incomplete;
 668       }
 669
 670       // Sanity check
 671       if (Cache[Pkg].Keep() == true &&
 672           Pkg.State() == pkgCache::PkgIterator::NeedsNothing &&
 673           (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
 674       {
 675          _error->Error("Internal Error, trying to manipulate a kept package (%s)",Pkg.Name());
 676          return Failed;
 677       }
 678
 679       // Perform a delete or an install
 680       if (Cache[Pkg].Delete() == true)
 681       {
 682          if (SmartRemove(Pkg) == false)
 683             return Failed;
 684       }
 685       else
 686          if (SmartUnPack(Pkg) == false)
 687             return Failed;
 688       DoneSomething = true;
 689    }
 690
 691    // Final run through the configure phase
 692    if (ConfigureAll() == false)
 693       return Failed;
 694
 695    // Sanity check
 696    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
 697    {
 698       if (List->IsFlag(*I,pkgOrderList::Configured) == false)
 699       {
 700          _error->Error("Internal error, packages left unconfigured. %s",
 701                        PkgIterator(Cache,*I).Name());
 702          return Failed;
 703       }
 704    }
 705
 706    return Completed;
 707 }
 708                                                                         /*}}}*/
 709 // PM::DoInstallPostFork - Does install part that happens after the fork /*{{{*/
 710 // ---------------------------------------------------------------------
 711 pkgPackageManager::OrderResult
 712 pkgPackageManager::DoInstallPostFork(int statusFd)
 713 {
 714       if(statusFd > 0)
 715          // FIXME: use SetCloseExec here once it taught about throwing
 716          //        exceptions instead of doing _exit(100) on failure
 717          fcntl(statusFd,F_SETFD,FD_CLOEXEC);
 718       bool goResult = Go(statusFd);
 719       if(goResult == false)
 720          return Failed;
 721
 722       return Res;
 723 };
 724
 725 // PM::DoInstall - Does the installation                                /*{{{*/
 726 // ---------------------------------------------------------------------
 727 /* This uses the filenames in FileNames and the information in the
 728    DepCache to perform the installation of packages.*/
 729 pkgPackageManager::OrderResult pkgPackageManager::DoInstall(int statusFd)
 730 {
 731    if(DoInstallPreFork() == Failed)
 732       return Failed;
 733
 734    return DoInstallPostFork(statusFd);
 735 }
 736                                                                         /*}}}*/