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    // Put the package on the list
 350    OList.push_back(Pkg);
 351    OList.Flag(Pkg,pkgOrderList::Added);
 352    Depth++;
 353
 354    // Check the dependencies to see if they are all satisfied.
 355    bool Bad = false;
 356    for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList(); D.end() == false;)
 357    {
 358       if (D->Type != pkgCache::Dep::Depends && D->Type != pkgCache::Dep::PreDepends)
 359       {
 360          D++;
 361          continue;
 362       }
 363
 364       // Grok or groups
 365       Bad = true;
 366       for (bool LastOR = true; D.end() == false && LastOR == true; D++)
 367       {
 368          LastOR = (D->CompareOp & pkgCache::Dep::Or) == pkgCache::Dep::Or;
 369
 370          if (Bad == false)
 371             continue;
 372
 373          SPtrArray<Version *> VList = D.AllTargets();
 374          for (Version **I = VList; *I != 0 && Bad == true; I++)
 375          {
 376             VerIterator Ver(Cache,*I);
 377             PkgIterator Pkg = Ver.ParentPkg();
 378
 379             // See if the current version is ok
 380             if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
 381                 Pkg.State() == PkgIterator::NeedsNothing)
 382             {
 383                Bad = false;
 384                continue;
 385             }
 386
 387             // Not the install version
 388             if (Cache[Pkg].InstallVer != *I ||
 389                 (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
 390                continue;
 391
 392             if (List->IsFlag(Pkg,pkgOrderList::UnPacked) == true)
 393                Bad = !DepAdd(OList,Pkg,Depth);
 394             if (List->IsFlag(Pkg,pkgOrderList::Configured) == true)
 395                Bad = false;
 396          }
 397       }
 398
 399       if (Bad == true)
 400       {
 401          OList.Flag(Pkg,0,pkgOrderList::Added);
 402          OList.pop_back();
 403          Depth--;
 404          return false;
 405       }
 406    }
 407
 408    Depth--;
 409    return true;
 410 }
 411                                                                         /*}}}*/
 412 // PM::EarlyRemove - Perform removal of packages before their time      /*{{{*/
 413 // ---------------------------------------------------------------------
 414 /* This is called to deal with conflicts arising from unpacking */
 415 bool pkgPackageManager::EarlyRemove(PkgIterator Pkg)
 416 {
 417    if (List->IsNow(Pkg) == false)
 418       return true;
 419
 420    // Already removed it
 421    if (List->IsFlag(Pkg,pkgOrderList::Removed) == true)
 422       return true;
 423
 424    // Woops, it will not be re-installed!
 425    if (List->IsFlag(Pkg,pkgOrderList::InList) == false)
 426       return false;
 427
 428    // Essential packages get special treatment
 429    bool IsEssential = false;
 430    if ((Pkg->Flags & pkgCache::Flag::Essential) != 0)
 431       IsEssential = true;
 432
 433    /* Check for packages that are the dependents of essential packages and
 434       promote them too */
 435    if (Pkg->CurrentVer != 0)
 436    {
 437       for (DepIterator D = Pkg.RevDependsList(); D.end() == false &&
 438            IsEssential == false; D++)
 439          if (D->Type == pkgCache::Dep::Depends || D->Type == pkgCache::Dep::PreDepends)
 440             if ((D.ParentPkg()->Flags & pkgCache::Flag::Essential) != 0)
 441                IsEssential = true;
 442    }
 443
 444    if (IsEssential == true)
 445    {
 446       if (_config->FindB("APT::Force-LoopBreak",false) == false)
 447          return _error->Error(_("This installation run will require temporarily "
 448                                 "removing the essential package %s due to a "
 449                                 "Conflicts/Pre-Depends loop. This is often bad, "
 450                                 "but if you really want to do it, activate the "
 451                                 "APT::Force-LoopBreak option."),Pkg.Name());
 452    }
 453
 454    bool Res = SmartRemove(Pkg);
 455    if (Cache[Pkg].Delete() == false)
 456       List->Flag(Pkg,pkgOrderList::Removed,pkgOrderList::States);
 457
 458    return Res;
 459 }
 460                                                                         /*}}}*/
 461 // PM::SmartRemove - Removal Helper                                     /*{{{*/
 462 // ---------------------------------------------------------------------
 463 /* */
 464 bool pkgPackageManager::SmartRemove(PkgIterator Pkg)
 465 {
 466    if (List->IsNow(Pkg) == false)
 467       return true;
 468
 469    List->Flag(Pkg,pkgOrderList::Configured,pkgOrderList::States);
 470
 471    if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false)
 472       return Remove(Pkg,(Cache[Pkg].iFlags & pkgDepCache::Purge) == pkgDepCache::Purge);
 473    return true;
 474 }
 475                                                                         /*}}}*/
 476 // PM::SmartUnPack - Install helper                                     /*{{{*/
 477 // ---------------------------------------------------------------------
 478 /* This performs the task of handling pre-depends. */
 479 bool pkgPackageManager::SmartUnPack(PkgIterator Pkg)
 480 {
 481    // Check if it is already unpacked
 482    if (Pkg.State() == pkgCache::PkgIterator::NeedsConfigure &&
 483        Cache[Pkg].Keep() == true)
 484    {
 485       List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
 486       if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
 487          if (SmartConfigure(Pkg) == false)
 488             return _error->Error(_("Could not perform immediate configuration on already unpacked '%s'."
 489                         "Please see man 5 apt.conf under APT::Immediate-Configure for details."),Pkg.Name());
 490       return true;
 491    }
 492
 493    /* See if this packages install version has any predependencies
 494       that are not met by 'now' packages. */
 495    for (DepIterator D = Cache[Pkg].InstVerIter(Cache).DependsList();
 496         D.end() == false; )
 497    {
 498       // Compute a single dependency element (glob or)
 499       pkgCache::DepIterator Start;
 500       pkgCache::DepIterator End;
 501       D.GlobOr(Start,End);
 502
 503       while (End->Type == pkgCache::Dep::PreDepends)
 504       {
 505          if (Debug == true)
 506             clog << "PreDepends order for " << Pkg.Name() << std::endl;
 507
 508          // Look for possible ok targets.
 509          SPtrArray<Version *> VList = Start.AllTargets();
 510          bool Bad = true;
 511          for (Version **I = VList; *I != 0 && Bad == true; I++)
 512          {
 513             VerIterator Ver(Cache,*I);
 514             PkgIterator Pkg = Ver.ParentPkg();
 515
 516             // See if the current version is ok
 517             if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true &&
 518                 Pkg.State() == PkgIterator::NeedsNothing)
 519             {
 520                Bad = false;
 521                if (Debug == true)
 522                   clog << "Found ok package " << Pkg.Name() << endl;
 523                continue;
 524             }
 525          }
 526
 527          // Look for something that could be configured.
 528          for (Version **I = VList; *I != 0 && Bad == true; I++)
 529          {
 530             VerIterator Ver(Cache,*I);
 531             PkgIterator Pkg = Ver.ParentPkg();
 532
 533             // Not the install version
 534             if (Cache[Pkg].InstallVer != *I ||
 535                 (Cache[Pkg].Keep() == true && Pkg.State() == PkgIterator::NeedsNothing))
 536                continue;
 537
 538             if (Debug == true)
 539                clog << "Trying to SmartConfigure " << Pkg.Name() << endl;
 540             Bad = !SmartConfigure(Pkg);
 541          }
 542
 543          /* If this or element did not match then continue on to the
 544             next or element until a matching element is found */
 545          if (Bad == true)
 546          {
 547             // This triggers if someone make a pre-depends/depend loop.
 548             if (Start == End)
 549                return _error->Error("Couldn't configure pre-depend %s for %s, "
 550                                     "probably a dependency cycle.",
 551                                     End.TargetPkg().Name(),Pkg.Name());
 552             Start++;
 553          }
 554          else
 555             break;
 556       }
 557
 558       if (End->Type == pkgCache::Dep::Conflicts ||
 559           End->Type == pkgCache::Dep::Obsoletes)
 560       {
 561          /* Look for conflicts. Two packages that are both in the install
 562             state cannot conflict so we don't check.. */
 563          SPtrArray<Version *> VList = End.AllTargets();
 564          for (Version **I = VList; *I != 0; I++)
 565          {
 566             VerIterator Ver(Cache,*I);
 567             PkgIterator Pkg = Ver.ParentPkg();
 568
 569             // See if the current version is conflicting
 570             if (Pkg.CurrentVer() == Ver && List->IsNow(Pkg) == true)
 571             {
 572                if (EarlyRemove(Pkg) == false)
 573                   return _error->Error("Internal Error, Could not early remove %s",Pkg.Name());
 574             }
 575          }
 576       }
 577    }
 578
 579    // Check for reverse conflicts.
 580    if (CheckRConflicts(Pkg,Pkg.RevDependsList(),
 581                    Cache[Pkg].InstVerIter(Cache).VerStr()) == false)
 582       return false;
 583
 584    for (PrvIterator P = Cache[Pkg].InstVerIter(Cache).ProvidesList();
 585         P.end() == false; P++)
 586       CheckRConflicts(Pkg,P.ParentPkg().RevDependsList(),P.ProvideVersion());
 587
 588    if (pkgCache::VerIterator(Cache, Cache[Pkg].CandidateVer).Pseudo() == false &&
 589        Install(Pkg,FileNames[Pkg->ID]) == false)
 590       return false;
 591
 592    List->Flag(Pkg,pkgOrderList::UnPacked,pkgOrderList::States);
 593
 594    // Perform immedate configuration of the package.
 595    if (List->IsFlag(Pkg,pkgOrderList::Immediate) == true)
 596       if (SmartConfigure(Pkg) == false)
 597          return _error->Error(_("Could not perform immediate configuration on '%s'."
 598                         "Please see man 5 apt.conf under APT::Immediate-Configure for details. (%d)"),Pkg.Name(),2);
 599
 600    return true;
 601 }
 602                                                                         /*}}}*/
 603 // PM::OrderInstall - Installation ordering routine                     /*{{{*/
 604 // ---------------------------------------------------------------------
 605 /* */
 606 pkgPackageManager::OrderResult pkgPackageManager::OrderInstall()
 607 {
 608    if (CreateOrderList() == false)
 609       return Failed;
 610
 611    Reset();
 612
 613    if (Debug == true)
 614       clog << "Beginning to order" << endl;
 615
 616    bool const ordering =
 617         _config->FindB("PackageManager::UnpackAll",true) ?
 618                 List->OrderUnpack(FileNames) : List->OrderCritical();
 619    if (ordering == false)
 620    {
 621       _error->Error("Internal ordering error");
 622       return Failed;
 623    }
 624
 625    if (Debug == true)
 626       clog << "Done ordering" << endl;
 627
 628    bool DoneSomething = false;
 629    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
 630    {
 631       PkgIterator Pkg(Cache,*I);
 632
 633       if (List->IsNow(Pkg) == false)
 634       {
 635          if (Debug == true)
 636             clog << "Skipping already done " << Pkg.Name() << endl;
 637          continue;
 638       }
 639
 640       if (List->IsMissing(Pkg) == true)
 641       {
 642          if (Debug == true)
 643             clog << "Sequence completed at " << Pkg.Name() << endl;
 644          if (DoneSomething == false)
 645          {
 646             _error->Error("Internal Error, ordering was unable to handle the media swap");
 647             return Failed;
 648          }
 649          return Incomplete;
 650       }
 651
 652       // Sanity check
 653       if (Cache[Pkg].Keep() == true &&
 654           Pkg.State() == pkgCache::PkgIterator::NeedsNothing &&
 655           (Cache[Pkg].iFlags & pkgDepCache::ReInstall) != pkgDepCache::ReInstall)
 656       {
 657          _error->Error("Internal Error, trying to manipulate a kept package (%s)",Pkg.Name());
 658          return Failed;
 659       }
 660
 661       // Perform a delete or an install
 662       if (Cache[Pkg].Delete() == true)
 663       {
 664          if (SmartRemove(Pkg) == false)
 665             return Failed;
 666       }
 667       else
 668          if (SmartUnPack(Pkg) == false)
 669             return Failed;
 670       DoneSomething = true;
 671    }
 672
 673    // Final run through the configure phase
 674    if (ConfigureAll() == false)
 675       return Failed;
 676
 677    // Sanity check
 678    for (pkgOrderList::iterator I = List->begin(); I != List->end(); I++)
 679    {
 680       if (List->IsFlag(*I,pkgOrderList::Configured) == false)
 681       {
 682          _error->Error("Internal error, packages left unconfigured. %s",
 683                        PkgIterator(Cache,*I).Name());
 684          return Failed;
 685       }
 686    }
 687
 688    return Completed;
 689 }
 690                                                                         /*}}}*/
 691 // PM::DoInstallPostFork - Does install part that happens after the fork /*{{{*/
 692 // ---------------------------------------------------------------------
 693 pkgPackageManager::OrderResult
 694 pkgPackageManager::DoInstallPostFork(int statusFd)
 695 {
 696       if(statusFd > 0)
 697          // FIXME: use SetCloseExec here once it taught about throwing
 698          //        exceptions instead of doing _exit(100) on failure
 699          fcntl(statusFd,F_SETFD,FD_CLOEXEC);
 700       bool goResult = Go(statusFd);
 701       if(goResult == false)
 702          return Failed;
 703
 704       return Res;
 705 };
 706
 707 // PM::DoInstall - Does the installation                                /*{{{*/
 708 // ---------------------------------------------------------------------
 709 /* This uses the filenames in FileNames and the information in the
 710    DepCache to perform the installation of packages.*/
 711 pkgPackageManager::OrderResult pkgPackageManager::DoInstall(int statusFd)
 712 {
 713    if(DoInstallPreFork() == Failed)
 714       return Failed;
 715
 716    return DoInstallPostFork(statusFd);
 717 }
 718                                                                         /*}}}*/