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