// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: pkgcachegen.cc,v 1.36 1999/04/18 07:25:32 jgg Exp $
+// $Id: pkgcachegen.cc,v 1.50 2001/07/01 22:28:24 jgg Exp $
/* ######################################################################
Package Cache Generator - Generator for the cache structure.
#pragma implementation "apt-pkg/pkgcachegen.h"
#endif
+#define APT_COMPATIBILITY 986
+
#include <apt-pkg/pkgcachegen.h>
#include <apt-pkg/error.h>
#include <apt-pkg/version.h>
#include <apt-pkg/progress.h>
#include <apt-pkg/sourcelist.h>
#include <apt-pkg/configuration.h>
-#include <apt-pkg/deblistparser.h>
#include <apt-pkg/strutl.h>
-#include <system.h>
+#include <apt-pkg/sptr.h>
+#include <apt-pkg/pkgsystem.h>
+
+#include <apti18n.h>
+
+#include <vector>
#include <sys/stat.h>
#include <unistd.h>
+#include <errno.h>
+#include <stdio.h>
+#include <system.h>
/*}}}*/
+typedef vector<pkgIndexFile *>::iterator FileIterator;
// CacheGenerator::pkgCacheGenerator - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* We set the diry flag and make sure that is written to the disk */
-pkgCacheGenerator::pkgCacheGenerator(DynamicMMap &Map,OpProgress &Prog) :
- Map(Map), Cache(Map), Progress(Prog)
+pkgCacheGenerator::pkgCacheGenerator(DynamicMMap *pMap,OpProgress *Prog) :
+ Map(*pMap), Cache(pMap,false), Progress(Prog)
{
+ CurrentFile = 0;
+ memset(UniqHash,0,sizeof(UniqHash));
+
if (_error->PendingError() == true)
return;
-
+
if (Map.Size() == 0)
{
+ // Setup the map interface..
+ Cache.HeaderP = (pkgCache::Header *)Map.Data();
Map.RawAllocate(sizeof(pkgCache::Header));
+ Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0]));
+
+ // Starting header
*Cache.HeaderP = pkgCache::Header();
+ Cache.HeaderP->VerSysName = Map.WriteString(_system->VS->Label);
+ Cache.HeaderP->Architecture = Map.WriteString(_config->Find("APT::Architecture"));
+ Cache.ReMap();
+ }
+ else
+ {
+ // Map directly from the existing file
+ Cache.ReMap();
+ Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0]));
+ if (Cache.VS != _system->VS)
+ {
+ _error->Error(_("Cache has an incompatible versioning system"));
+ return;
+ }
}
+
Cache.HeaderP->Dirty = true;
Map.Sync(0,sizeof(pkgCache::Header));
- Map.UsePools(*Cache.HeaderP->Pools,sizeof(Cache.HeaderP->Pools)/sizeof(Cache.HeaderP->Pools[0]));
- memset(UniqHash,0,sizeof(UniqHash));
}
/*}}}*/
// CacheGenerator::~pkgCacheGenerator - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* This provides the generation of the entries in the cache. Each loop
goes through a single package record from the underlying parse engine. */
-bool pkgCacheGenerator::MergeList(ListParser &List)
+bool pkgCacheGenerator::MergeList(ListParser &List,
+ pkgCache::VerIterator *OutVer)
{
List.Owner = this;
pkgCache::PkgIterator Pkg;
if (NewPackage(Pkg,PackageName) == false)
- return _error->Error("Error occured while processing %s (NewPackage)",PackageName.c_str());
+ return _error->Error(_("Error occured while processing %s (NewPackage)"),PackageName.c_str());
Counter++;
- if (Counter % 100 == 0)
- Progress.Progress(List.Offset());
+ if (Counter % 100 == 0 && Progress != 0)
+ Progress->Progress(List.Offset());
/* Get a pointer to the version structure. We know the list is sorted
so we use that fact in the search. Insertion of new versions is
if (Version.empty() == true)
{
if (List.UsePackage(Pkg,pkgCache::VerIterator(Cache)) == false)
- return _error->Error("Error occured while processing %s (UsePackage1)",PackageName.c_str());
+ return _error->Error(_("Error occured while processing %s (UsePackage1)"),PackageName.c_str());
continue;
}
pkgCache::VerIterator Ver = Pkg.VersionList();
- __apt_ptrloc *Last = &Pkg->VersionList;
+ map_ptrloc *Last = &Pkg->VersionList;
int Res = 1;
for (; Ver.end() == false; Last = &Ver->NextVer, Ver++)
{
- Res = pkgVersionCompare(Version.begin(),Version.end(),Ver.VerStr(),
- Ver.VerStr() + strlen(Ver.VerStr()));
+ Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
if (Res >= 0)
break;
}
/* We already have a version for this item, record that we
saw it */
- if (Res == 0)
+ unsigned long Hash = List.VersionHash();
+ if (Res == 0 && Ver->Hash == Hash)
{
if (List.UsePackage(Pkg,Ver) == false)
- return _error->Error("Error occured while processing %s (UsePackage2)",PackageName.c_str());
-
+ return _error->Error(_("Error occured while processing %s (UsePackage2)"),PackageName.c_str());
+
if (NewFileVer(Ver,List) == false)
- return _error->Error("Error occured while processing %s (NewFileVer1)",PackageName.c_str());
+ return _error->Error(_("Error occured while processing %s (NewFileVer1)"),PackageName.c_str());
+
+ // Read only a single record and return
+ if (OutVer != 0)
+ {
+ *OutVer = Ver;
+ return true;
+ }
continue;
}
+ // Skip to the end of the same version set.
+ if (Res == 0)
+ {
+ for (; Ver.end() == false; Last = &Ver->NextVer, Ver++)
+ {
+ Res = Cache.VS->CmpVersion(Version,Ver.VerStr());
+ if (Res != 0)
+ break;
+ }
+ }
+
// Add a new version
*Last = NewVersion(Ver,Version,*Last);
Ver->ParentPkg = Pkg.Index();
+ Ver->Hash = Hash;
if (List.NewVersion(Ver) == false)
- return _error->Error("Error occured while processing %s (NewVersion1)",PackageName.c_str());
+ return _error->Error(_("Error occured while processing %s (NewVersion1)"),PackageName.c_str());
if (List.UsePackage(Pkg,Ver) == false)
- return _error->Error("Error occured while processing %s (UsePackage3)",PackageName.c_str());
+ return _error->Error(_("Error occured while processing %s (UsePackage3)"),PackageName.c_str());
if (NewFileVer(Ver,List) == false)
- return _error->Error("Error occured while processing %s (NewVersion2)",PackageName.c_str());
+ return _error->Error(_("Error occured while processing %s (NewVersion2)"),PackageName.c_str());
+
+ // Read only a single record and return
+ if (OutVer != 0)
+ {
+ *OutVer = Ver;
+ return true;
+ }
}
+ if (Cache.HeaderP->PackageCount >= (1ULL<<sizeof(Cache.PkgP->ID)*8)-1)
+ return _error->Error(_("Wow, you exceeded the number of package "
+ "names this APT is capable of."));
+ if (Cache.HeaderP->VersionCount >= (1ULL<<(sizeof(Cache.VerP->ID)*8))-1)
+ return _error->Error(_("Wow, you exceeded the number of versions "
+ "this APT is capable of."));
+ if (Cache.HeaderP->DependsCount >= (1ULL<<(sizeof(Cache.DepP->ID)*8))-1ULL)
+ return _error->Error(_("Wow, you exceeded the number of dependencies "
+ "this APT is capable of."));
return true;
}
/*}}}*/
bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver,
ListParser &List)
{
+ if (CurrentFile == 0)
+ return true;
+
// Get a structure
unsigned long VerFile = Map.Allocate(sizeof(pkgCache::VerFile));
if (VerFile == 0)
VF->File = CurrentFile - Cache.PkgFileP;
// Link it to the end of the list
- __apt_ptrloc *Last = &Ver->FileList;
+ map_ptrloc *Last = &Ver->FileList;
for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; V++)
Last = &V->NextFile;
VF->NextFile = *Last;
// Probe the reverse dependency list for a version string that matches
if (Version.empty() == false)
{
-/* for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++, Hit++)
+/* for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++)
if (I->Version != 0 && I.TargetVer() == Version)
Dep->Version = I->Version;*/
if (Dep->Version == 0)
Prv->Version = Ver.Index();
Prv->NextPkgProv = Ver->ProvidesList;
Ver->ProvidesList = Prv.Index();
- if (Version.empty() == false && (Prv->Version = WriteString(Version)) == 0)
+ if (Version.empty() == false && (Prv->ProvideVersion = WriteString(Version)) == 0)
return false;
// Locate the target package
// CacheGenerator::SelectFile - Select the current file being parsed /*{{{*/
// ---------------------------------------------------------------------
/* This is used to select which file is to be associated with all newly
- added versions. */
-bool pkgCacheGenerator::SelectFile(string File,unsigned long Flags)
+ added versions. The caller is responsible for setting the IMS fields. */
+bool pkgCacheGenerator::SelectFile(string File,string Site,
+ const pkgIndexFile &Index,
+ unsigned long Flags)
{
- struct stat Buf;
- if (stat(File.c_str(),&Buf) == -1)
- return _error->Errno("stat","Couldn't stat ",File.c_str());
-
// Get some space for the structure
CurrentFile = Cache.PkgFileP + Map.Allocate(sizeof(*CurrentFile));
if (CurrentFile == Cache.PkgFileP)
// Fill it in
CurrentFile->FileName = Map.WriteString(File);
- CurrentFile->Size = Buf.st_size;
- CurrentFile->mtime = Buf.st_mtime;
+ CurrentFile->Site = WriteUniqString(Site);
CurrentFile->NextFile = Cache.HeaderP->FileList;
CurrentFile->Flags = Flags;
CurrentFile->ID = Cache.HeaderP->PackageFileCount;
+ CurrentFile->IndexType = WriteUniqString(Index.GetType()->Label);
PkgFileName = File;
Cache.HeaderP->FileList = CurrentFile - Cache.PkgFileP;
Cache.HeaderP->PackageFileCount++;
-
+
if (CurrentFile->FileName == 0)
return false;
- Progress.SubProgress(Buf.st_size);
+ if (Progress != 0)
+ Progress->SubProgress(Index.Size());
return true;
}
/*}}}*/
// Search for an insertion point
pkgCache::StringItem *I = Cache.StringItemP + Cache.HeaderP->StringList;
int Res = 1;
- __apt_ptrloc *Last = &Cache.HeaderP->StringList;
+ map_ptrloc *Last = &Cache.HeaderP->StringList;
for (; I != Cache.StringItemP; Last = &I->NextItem,
I = Cache.StringItemP + I->NextItem)
{
}
/*}}}*/
-// SrcCacheCheck - Check if the source package cache is uptodate /*{{{*/
+// CheckValidity - Check that a cache is up-to-date /*{{{*/
// ---------------------------------------------------------------------
-/* The source cache is checked against the source list and the files
- on disk, any difference results in a false. */
-bool pkgSrcCacheCheck(pkgSourceList &List)
+/* This just verifies that each file in the list of index files exists,
+ has matching attributes with the cache and the cache does not have
+ any extra files. */
+static bool CheckValidity(string CacheFile, FileIterator Start,
+ FileIterator End,MMap **OutMap = 0)
{
- if (_error->PendingError() == true)
- return false;
-
- string CacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
- string ListDir = _config->FindDir("Dir::State::lists");
-
- // Count the number of missing files
- int Missing = 0;
- for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++)
- {
- // Only cache deb source types.
- if (I->Type != pkgSourceList::Item::Deb)
- {
- Missing++;
- continue;
- }
-
- string File = ListDir + URItoFileName(I->PackagesURI());
- struct stat Buf;
- if (stat(File.c_str(),&Buf) != 0)
- {
- _error->WarningE("stat","Couldn't stat source package list '%s' (%s)",
- I->PackagesInfo().c_str(),File.c_str());
- Missing++;
- }
- }
-
- // Open the source package cache
- if (FileExists(CacheFile) == false)
+ // No file, certainly invalid
+ if (CacheFile.empty() == true || FileExists(CacheFile) == false)
return false;
+ // Map it
FileFd CacheF(CacheFile,FileFd::ReadOnly);
- if (_error->PendingError() == true)
- {
- _error->Discard();
- return false;
- }
-
- MMap Map(CacheF,MMap::Public | MMap::ReadOnly);
- if (_error->PendingError() == true || Map.Size() == 0)
- {
- _error->Discard();
- return false;
- }
-
+ SPtr<MMap> Map = new MMap(CacheF,MMap::Public | MMap::ReadOnly);
pkgCache Cache(Map);
- if (_error->PendingError() == true)
+ if (_error->PendingError() == true || Map->Size() == 0)
{
_error->Discard();
return false;
}
-
- // They are certianly out of sync
- if (Cache.Head().PackageFileCount != List.size() - Missing)
- return false;
- for (pkgCache::PkgFileIterator F(Cache); F.end() == false; F++)
+ /* Now we check every index file, see if it is in the cache,
+ verify the IMS data and check that it is on the disk too.. */
+ SPtrArray<bool> Visited = new bool[Cache.HeaderP->PackageFileCount];
+ memset(Visited,0,sizeof(*Visited)*Cache.HeaderP->PackageFileCount);
+ for (; Start != End; Start++)
{
- // Search for a match in the source list
- bool Bad = true;
- for (pkgSourceList::const_iterator I = List.begin();
- I != List.end(); I++)
+ if ((*Start)->HasPackages() == false)
+ continue;
+
+ if ((*Start)->Exists() == false)
{
- // Only cache deb source types.
- if (I->Type != pkgSourceList::Item::Deb)
- continue;
-
- string File = ListDir + URItoFileName(I->PackagesURI());
- if (F.FileName() == File)
- {
- Bad = false;
- break;
- }
+ _error->WarningE("stat",_("Couldn't stat source package list %s"),
+ (*Start)->Describe().c_str());
+ continue;
}
-
- // Check if the file matches what was cached
- Bad |= !F.IsOk();
- if (Bad == true)
+
+ // FindInCache is also expected to do an IMS check.
+ pkgCache::PkgFileIterator File = (*Start)->FindInCache(Cache);
+ if (File.end() == true)
return false;
+
+ Visited[File->ID] = true;
}
- return true;
-}
- /*}}}*/
-// PkgCacheCheck - Check if the package cache is uptodate /*{{{*/
-// ---------------------------------------------------------------------
-/* This does a simple check of all files used to compose the cache */
-bool pkgPkgCacheCheck(string CacheFile)
-{
- if (_error->PendingError() == true)
- return false;
-
- // Open the source package cache
- if (FileExists(CacheFile) == false)
- return false;
-
- FileFd CacheF(CacheFile,FileFd::ReadOnly);
- if (_error->PendingError() == true)
- {
- _error->Discard();
- return false;
- }
-
- MMap Map(CacheF,MMap::Public | MMap::ReadOnly);
- if (_error->PendingError() == true || Map.Size() == 0)
- {
- _error->Discard();
- return false;
- }
+ for (unsigned I = 0; I != Cache.HeaderP->PackageFileCount; I++)
+ if (Visited[I] == false)
+ return false;
- pkgCache Cache(Map);
if (_error->PendingError() == true)
{
_error->Discard();
return false;
}
-
- // Status files that must be in the cache
- string Status[3];
- Status[0] = _config->FindFile("Dir::State::xstatus");
- Status[1]= _config->FindFile("Dir::State::userstatus");
- Status[2] = _config->FindFile("Dir::State::status");
-
- // Cheack each file
- for (pkgCache::PkgFileIterator F(Cache); F.end() == false; F++)
- {
- if (F.IsOk() == false)
- return false;
-
- // See if this is one of the status files
- for (int I = 0; I != 3; I++)
- if (F.FileName() == Status[I])
- Status[I] = string();
- }
-
- // Make sure all the status files are loaded.
- for (int I = 0; I != 3; I++)
- {
- if (Status[I].empty() == false && FileExists(Status[I]) == true)
- return false;
- }
-
- return true;
-}
- /*}}}*/
-// AddSourcesSize - Add the size of the status files /*{{{*/
-// ---------------------------------------------------------------------
-/* This adds the size of all the status files to the size counter */
-static bool pkgAddSourcesSize(unsigned long &TotalSize)
-{
- // Grab the file names
- string xstatus = _config->FindFile("Dir::State::xstatus");
- string userstatus = _config->FindFile("Dir::State::userstatus");
- string status = _config->FindFile("Dir::State::status");
-
- // Grab the sizes
- struct stat Buf;
- if (stat(xstatus.c_str(),&Buf) == 0)
- TotalSize += Buf.st_size;
- if (stat(userstatus.c_str(),&Buf) == 0)
- TotalSize += Buf.st_size;
- if (stat(status.c_str(),&Buf) != 0)
- return _error->Errno("stat","Couldn't stat the status file %s",status.c_str());
- TotalSize += Buf.st_size;
+ if (OutMap != 0)
+ *OutMap = Map.UnGuard();
return true;
}
/*}}}*/
-// MergeStatus - Add the status files to the cache /*{{{*/
+// ComputeSize - Compute the total size of a bunch of files /*{{{*/
// ---------------------------------------------------------------------
-/* This adds the status files to the map */
-static bool pkgMergeStatus(OpProgress &Progress,pkgCacheGenerator &Gen,
- unsigned long &CurrentSize,unsigned long TotalSize)
+/* Size is kind of an abstract notion that is only used for the progress
+ meter */
+static unsigned long ComputeSize(FileIterator Start,FileIterator End)
{
- // Grab the file names
- string Status[3];
- Status[0] = _config->FindFile("Dir::State::xstatus");
- Status[1]= _config->FindFile("Dir::State::userstatus");
- Status[2] = _config->FindFile("Dir::State::status");
-
- for (int I = 0; I != 3; I++)
+ unsigned long TotalSize = 0;
+ for (; Start != End; Start++)
{
- // Check if the file exists and it is not the primary status file.
- string File = Status[I];
- if (I != 2 && FileExists(File) == false)
- continue;
-
- FileFd Pkg(File,FileFd::ReadOnly);
- debListParser Parser(Pkg);
- Progress.OverallProgress(CurrentSize,TotalSize,Pkg.Size(),"Reading Package Lists");
- if (_error->PendingError() == true)
- return _error->Error("Problem opening %s",File.c_str());
- CurrentSize += Pkg.Size();
-
- Progress.SubProgress(0,"Local Package State - " + flNotDir(File));
- if (Gen.SelectFile(File,pkgCache::Flag::NotSource) == false)
- return _error->Error("Problem with SelectFile %s",File.c_str());
-
- if (Gen.MergeList(Parser) == false)
- return _error->Error("Problem with MergeList %s",File.c_str());
- Progress.Progress(Pkg.Size());
+ if ((*Start)->HasPackages() == false)
+ continue;
+ TotalSize += (*Start)->Size();
}
-
- return true;
+ return TotalSize;
}
/*}}}*/
-// GenerateSrcCache - Write the source package lists to the map /*{{{*/
+// BuildCache - Merge the list of index files into the cache /*{{{*/
// ---------------------------------------------------------------------
-/* This puts the source package cache into the given generator. */
-bool pkgGenerateSrcCache(pkgSourceList &List,OpProgress &Progress,
- pkgCacheGenerator &Gen,
- unsigned long &CurrentSize,unsigned long &TotalSize)
+/* */
+static bool BuildCache(pkgCacheGenerator &Gen,
+ OpProgress &Progress,
+ unsigned long &CurrentSize,unsigned long TotalSize,
+ FileIterator Start, FileIterator End)
{
- string ListDir = _config->FindDir("Dir::State::lists");
-
- // Prepare the progress indicator
- TotalSize = 0;
- struct stat Buf;
- for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++)
- {
- string File = ListDir + URItoFileName(I->PackagesURI());
- if (stat(File.c_str(),&Buf) != 0)
- continue;
- TotalSize += Buf.st_size;
- }
-
- if (pkgAddSourcesSize(TotalSize) == false)
- return false;
-
- // Generate the pkg source cache
- CurrentSize = 0;
- for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++)
+ for (; Start != End; Start++)
{
- // Only cache deb source types.
- if (I->Type != pkgSourceList::Item::Deb)
+ if ((*Start)->HasPackages() == false)
continue;
- string File = ListDir + URItoFileName(I->PackagesURI());
-
- if (FileExists(File) == false)
+ if ((*Start)->Exists() == false)
continue;
-
- FileFd Pkg(File,FileFd::ReadOnly);
- debListParser Parser(Pkg);
- Progress.OverallProgress(CurrentSize,TotalSize,Pkg.Size(),"Reading Package Lists");
- if (_error->PendingError() == true)
- return _error->Error("Problem opening %s",File.c_str());
- CurrentSize += Pkg.Size();
-
- Progress.SubProgress(0,I->PackagesInfo());
- if (Gen.SelectFile(File) == false)
- return _error->Error("Problem with SelectFile %s",File.c_str());
-
- if (Gen.MergeList(Parser) == false)
- return _error->Error("Problem with MergeList %s",File.c_str());
-
- // Check the release file
- string RFile = ListDir + URItoFileName(I->ReleaseURI());
- if (FileExists(RFile) == true)
+
+ if ((*Start)->FindInCache(Gen.GetCache()).end() == false)
{
- FileFd Rel(RFile,FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return false;
- Parser.LoadReleaseInfo(Gen.GetCurFile(),Rel);
+ _error->Warning("Duplicate sources.list entry %s",
+ (*Start)->Describe().c_str());
+ continue;
}
- }
+
+ unsigned long Size = (*Start)->Size();
+ Progress.OverallProgress(CurrentSize,TotalSize,Size,_("Reading Package Lists"));
+ CurrentSize += Size;
+
+ if ((*Start)->Merge(Gen,Progress) == false)
+ return false;
+ }
return true;
}
/*}}}*/
-// MakeStatusCache - Generates a cache that includes the status files /*{{{*/
+// MakeStatusCache - Construct the status cache /*{{{*/
// ---------------------------------------------------------------------
-/* This copies the package source cache and then merges the status and
- xstatus files into it. */
-bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress)
+/* This makes sure that the status cache (the cache that has all
+ index files from the sources list and all local ones) is ready
+ to be mmaped. If OutMap is not zero then a MMap object representing
+ the cache will be stored there. This is pretty much mandetory if you
+ are using AllowMem. AllowMem lets the function be run as non-root
+ where it builds the cache 'fast' into a memory buffer. */
+bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress,
+ MMap **OutMap,bool AllowMem)
{
- Progress.OverallProgress(0,1,1,"Reading Package Lists");
+ unsigned long MapSize = _config->FindI("APT::Cache-Limit",6*1024*1024);
+
+ vector<pkgIndexFile *> Files(List.begin(),List.end());
+ unsigned long EndOfSource = Files.size();
+ if (_system->AddStatusFiles(Files) == false)
+ return false;
+ // Decide if we can write to the files..
string CacheFile = _config->FindFile("Dir::Cache::pkgcache");
- bool SrcOk = pkgSrcCacheCheck(List);
- bool PkgOk = SrcOk && pkgPkgCacheCheck(CacheFile);
-
- // Rebuild the source and package caches
- if (SrcOk == false)
- {
- string SCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
- FileFd SCacheF(SCacheFile,FileFd::WriteEmpty);
- FileFd CacheF(CacheFile,FileFd::WriteEmpty);
- DynamicMMap Map(CacheF,MMap::Public);
+ string SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
+
+ // Decide if we can write to the cache
+ bool Writeable = false;
+ if (CacheFile.empty() == false)
+ Writeable = access(flNotFile(CacheFile).c_str(),W_OK) == 0;
+ else
+ if (SrcCacheFile.empty() == false)
+ Writeable = access(flNotFile(SrcCacheFile).c_str(),W_OK) == 0;
+
+ if (Writeable == false && AllowMem == false && CacheFile.empty() == false)
+ return _error->Error(_("Unable to write to %s"),flNotFile(CacheFile).c_str());
+
+ Progress.OverallProgress(0,1,1,_("Reading Package Lists"));
+
+ // Cache is OK, Fin.
+ if (CheckValidity(CacheFile,Files.begin(),Files.end(),OutMap) == true)
+ {
+ Progress.OverallProgress(1,1,1,_("Reading Package Lists"));
+ return true;
+ }
+
+ /* At this point we know we need to reconstruct the package cache,
+ begin. */
+ SPtr<FileFd> CacheF;
+ SPtr<DynamicMMap> Map;
+ if (Writeable == true && CacheFile.empty() == false)
+ {
+ unlink(CacheFile.c_str());
+ CacheF = new FileFd(CacheFile,FileFd::WriteEmpty);
+ Map = new DynamicMMap(*CacheF,MMap::Public,MapSize);
if (_error->PendingError() == true)
return false;
-
- pkgCacheGenerator Gen(Map,Progress);
- unsigned long CurrentSize = 0;
- unsigned long TotalSize = 0;
- if (pkgGenerateSrcCache(List,Progress,Gen,CurrentSize,TotalSize) == false)
- return false;
-
- // Write the src cache
- Gen.GetCache().HeaderP->Dirty = false;
- if (SCacheF.Write(Map.Data(),Map.Size()) == false)
- return _error->Error("IO Error saving source cache");
- Gen.GetCache().HeaderP->Dirty = true;
-
- // Merge in the source caches
- return pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize);
}
-
- if (PkgOk == true)
+ else
{
- Progress.OverallProgress(1,1,1,"Reading Package Lists");
- return true;
+ // Just build it in memory..
+ Map = new DynamicMMap(MMap::Public,MapSize);
}
- // We use the source cache to generate the package cache
- string SCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
-
- FileFd SCacheF(SCacheFile,FileFd::ReadOnly);
- FileFd CacheF(CacheFile,FileFd::WriteEmpty);
- DynamicMMap Map(CacheF,MMap::Public);
- if (_error->PendingError() == true)
- return false;
-
- // Preload the map with the source cache
- if (SCacheF.Read((unsigned char *)Map.Data() + Map.RawAllocate(SCacheF.Size()),
- SCacheF.Size()) == false)
- return false;
-
- pkgCacheGenerator Gen(Map,Progress);
-
- // Compute the progress
- unsigned long TotalSize = 0;
- if (pkgAddSourcesSize(TotalSize) == false)
- return false;
-
+ // Lets try the source cache.
unsigned long CurrentSize = 0;
- return pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize);
-}
- /*}}}*/
-// MakeStatusCacheMem - Returns a map for the status cache /*{{{*/
-// ---------------------------------------------------------------------
-/* This creates a map object for the status cache. If the process has write
- access to the caches then it is the same as MakeStatusCache, otherwise it
- creates a memory block and puts the cache in there. */
-MMap *pkgMakeStatusCacheMem(pkgSourceList &List,OpProgress &Progress)
-{
- /* If the cache file is writeable this is just a wrapper for
- MakeStatusCache */
- string CacheFile = _config->FindFile("Dir::Cache::pkgcache");
- bool Writeable = access(CacheFile.c_str(),W_OK) == 0;
- if (Writeable == true)
+ unsigned long TotalSize = 0;
+ if (CheckValidity(SrcCacheFile,Files.begin(),
+ Files.begin()+EndOfSource) == true)
{
- if (pkgMakeStatusCache(List,Progress) == false)
- return 0;
-
- // Open the cache file
- FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return 0;
+ // Preload the map with the source cache
+ FileFd SCacheF(SrcCacheFile,FileFd::ReadOnly);
+ if (SCacheF.Read((unsigned char *)Map->Data() + Map->RawAllocate(SCacheF.Size()),
+ SCacheF.Size()) == false)
+ return false;
+
+ TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
- MMap *Map = new MMap(File,MMap::Public | MMap::ReadOnly);
+ // Build the status cache
+ pkgCacheGenerator Gen(Map.Get(),&Progress);
if (_error->PendingError() == true)
- {
- delete Map;
- return 0;
- }
- return Map;
- }
-
- // Mostly from MakeStatusCache..
- Progress.OverallProgress(0,1,1,"Reading Package Lists");
-
- bool SrcOk = pkgSrcCacheCheck(List);
- bool PkgOk = SrcOk && pkgPkgCacheCheck(CacheFile);
-
- // Rebuild the source and package caches
- if (SrcOk == false)
+ return false;
+ if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
+ Files.begin()+EndOfSource,Files.end()) == false)
+ return false;
+ }
+ else
{
- DynamicMMap *Map = new DynamicMMap(MMap::Public);
- if (_error->PendingError() == true)
- {
- delete Map;
- return 0;
- }
+ TotalSize = ComputeSize(Files.begin(),Files.end());
- pkgCacheGenerator Gen(*Map,Progress);
- unsigned long CurrentSize = 0;
- unsigned long TotalSize = 0;
- if (pkgGenerateSrcCache(List,Progress,Gen,CurrentSize,TotalSize) == false)
- {
- delete Map;
- return 0;
- }
+ // Build the source cache
+ pkgCacheGenerator Gen(Map.Get(),&Progress);
+ if (_error->PendingError() == true)
+ return false;
+ if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
+ Files.begin(),Files.begin()+EndOfSource) == false)
+ return false;
- // Merge in the source caches
- if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false)
+ // Write it back
+ if (Writeable == true && SrcCacheFile.empty() == false)
{
- delete Map;
- return 0;
+ FileFd SCacheF(SrcCacheFile,FileFd::WriteEmpty);
+ if (_error->PendingError() == true)
+ return false;
+ // Write out the main data
+ if (SCacheF.Write(Map->Data(),Map->Size()) == false)
+ return _error->Error(_("IO Error saving source cache"));
+ SCacheF.Sync();
+
+ // Write out the proper header
+ Gen.GetCache().HeaderP->Dirty = false;
+ if (SCacheF.Seek(0) == false ||
+ SCacheF.Write(Map->Data(),sizeof(*Gen.GetCache().HeaderP)) == false)
+ return _error->Error(_("IO Error saving source cache"));
+ SCacheF.Sync();
+ Gen.GetCache().HeaderP->Dirty = true;
}
- return Map;
+ // Build the status cache
+ if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
+ Files.begin()+EndOfSource,Files.end()) == false)
+ return false;
}
- if (PkgOk == true)
+ if (_error->PendingError() == true)
+ return false;
+ if (OutMap != 0)
{
- Progress.OverallProgress(1,1,1,"Reading Package Lists");
-
- // Open the cache file
- FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return 0;
-
- MMap *Map = new MMap(File,MMap::Public | MMap::ReadOnly);
- if (_error->PendingError() == true)
+ if (CacheF != 0)
{
- delete Map;
- return 0;
+ delete Map.UnGuard();
+ *OutMap = new MMap(*CacheF,MMap::Public | MMap::ReadOnly);
}
- return Map;
+ else
+ {
+ *OutMap = Map.UnGuard();
+ }
}
- // We use the source cache to generate the package cache
- string SCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
- FileFd SCacheF(SCacheFile,FileFd::ReadOnly);
- DynamicMMap *Map = new DynamicMMap(MMap::Public);
+ return true;
+}
+ /*}}}*/
+// MakeOnlyStatusCache - Build a cache with just the status files /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgMakeOnlyStatusCache(OpProgress &Progress,DynamicMMap **OutMap)
+{
+ unsigned long MapSize = _config->FindI("APT::Cache-Limit",4*1024*1024);
+ vector<pkgIndexFile *> Files;
+ unsigned long EndOfSource = Files.size();
+ if (_system->AddStatusFiles(Files) == false)
+ return false;
+
+ SPtr<DynamicMMap> Map;
+ Map = new DynamicMMap(MMap::Public,MapSize);
+ unsigned long CurrentSize = 0;
+ unsigned long TotalSize = 0;
+
+ TotalSize = ComputeSize(Files.begin()+EndOfSource,Files.end());
+
+ // Build the status cache
+ Progress.OverallProgress(0,1,1,_("Reading Package Lists"));
+ pkgCacheGenerator Gen(Map.Get(),&Progress);
if (_error->PendingError() == true)
- {
- delete Map;
- return 0;
- }
+ return false;
+ if (BuildCache(Gen,Progress,CurrentSize,TotalSize,
+ Files.begin()+EndOfSource,Files.end()) == false)
+ return false;
- // Preload the map with the source cache
- if (SCacheF.Read((unsigned char *)Map->Data() + Map->RawAllocate(SCacheF.Size()),
- SCacheF.Size()) == false)
- {
- delete Map;
- return 0;
- }
-
- pkgCacheGenerator Gen(*Map,Progress);
+ if (_error->PendingError() == true)
+ return false;
+ *OutMap = Map.UnGuard();
- // Compute the progress
- unsigned long TotalSize = 0;
- if (pkgAddSourcesSize(TotalSize) == false)
- {
- delete Map;
- return 0;
- }
-
- unsigned long CurrentSize = 0;
- if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false)
- {
- delete Map;
- return 0;
- }
-
- return Map;
+ return true;
}
/*}}}*/
projects / apt.git / blobdiff