apt-private/private-cachefile.cc

   1 // Include files                                                        /*{{{*/
   2 #include<config.h>
   3
   4 #include <apt-pkg/algorithms.h>
   5 #include <apt-pkg/error.h>
   6
   7 #include <cstdlib>
   8
   9 #include "private-output.h"
  10 #include "private-cachefile.h"
  11
  12 #include <apti18n.h>
  13                                                                         /*}}}*/
  14
  15 using namespace std;
  16
  17 // CacheFile::NameComp - QSort compare by name                          /*{{{*/
  18 // ---------------------------------------------------------------------
  19 /* */
  20 pkgCache *CacheFile::SortCache = 0;
  21 int CacheFile::NameComp(const void *a,const void *b)
  22 {
  23    if (*(pkgCache::Package **)a == 0 || *(pkgCache::Package **)b == 0)
  24       return *(pkgCache::Package **)a - *(pkgCache::Package **)b;
  25
  26    const pkgCache::Package &A = **(pkgCache::Package **)a;
  27    const pkgCache::Package &B = **(pkgCache::Package **)b;
  28
  29    return strcmp(SortCache->StrP + A.Name,SortCache->StrP + B.Name);
  30 }
  31                                                                         /*}}}*/
  32 // CacheFile::Sort - Sort by name                                       /*{{{*/
  33 // ---------------------------------------------------------------------
  34 /* */
  35 void CacheFile::Sort()
  36 {
  37    delete [] List;
  38    List = new pkgCache::Package *[Cache->Head().PackageCount];
  39    memset(List,0,sizeof(*List)*Cache->Head().PackageCount);
  40    pkgCache::PkgIterator I = Cache->PkgBegin();
  41    for (;I.end() != true; ++I)
  42       List[I->ID] = I;
  43
  44    SortCache = *this;
  45    qsort(List,Cache->Head().PackageCount,sizeof(*List),NameComp);
  46 }
  47                                                                         /*}}}*/
  48 // CacheFile::CheckDeps - Open the cache file                           /*{{{*/
  49 // ---------------------------------------------------------------------
  50 /* This routine generates the caches and then opens the dependency cache
  51    and verifies that the system is OK. */
  52 bool CacheFile::CheckDeps(bool AllowBroken)
  53 {
  54    bool FixBroken = _config->FindB("APT::Get::Fix-Broken",false);
  55
  56    if (_error->PendingError() == true)
  57       return false;
  58
  59    // Check that the system is OK
  60    if (DCache->DelCount() != 0 || DCache->InstCount() != 0)
  61       return _error->Error("Internal error, non-zero counts");
  62
  63    // Apply corrections for half-installed packages
  64    if (pkgApplyStatus(*DCache) == false)
  65       return false;
  66
  67    if (_config->FindB("APT::Get::Fix-Policy-Broken",false) == true)
  68    {
  69       FixBroken = true;
  70       if ((DCache->PolicyBrokenCount() > 0))
  71       {
  72          // upgrade all policy-broken packages with ForceImportantDeps=True
  73          for (pkgCache::PkgIterator I = Cache->PkgBegin(); !I.end(); ++I)
  74             if ((*DCache)[I].NowPolicyBroken() == true)
  75                DCache->MarkInstall(I,true,0, false, true);
  76       }
  77    }
  78
  79    // Nothing is broken
  80    if (DCache->BrokenCount() == 0 || AllowBroken == true)
  81       return true;
  82
  83    // Attempt to fix broken things
  84    if (FixBroken == true)
  85    {
  86       c1out << _("Correcting dependencies...") << flush;
  87       if (pkgFixBroken(*DCache) == false || DCache->BrokenCount() != 0)
  88       {
  89          c1out << _(" failed.") << endl;
  90          ShowBroken(c1out,*this,true);
  91
  92          return _error->Error(_("Unable to correct dependencies"));
  93       }
  94       if (pkgMinimizeUpgrade(*DCache) == false)
  95          return _error->Error(_("Unable to minimize the upgrade set"));
  96
  97       c1out << _(" Done") << endl;
  98    }
  99    else
 100    {
 101       c1out << _("You might want to run 'apt-get -f install' to correct these.") << endl;
 102       ShowBroken(c1out,*this,true);
 103
 104       return _error->Error(_("Unmet dependencies. Try using -f."));
 105    }
 106
 107    return true;
 108 }
 109                                                                         /*}}}*/