// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: pkgcachegen.cc,v 1.5 1998/07/05 05:39:53 jgg Exp $
+// $Id: pkgcachegen.cc,v 1.41 1999/07/26 17:46:07 jgg Exp $
/* ######################################################################
Package Cache Generator - Generator for the cache structure.
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
-#include <pkglib/pkgcachegen.h>
-#include <pkglib/error.h>
-#include <pkglib/version.h>
+#ifdef __GNUG__
+#pragma implementation "apt-pkg/pkgcachegen.h"
+#endif
+
+#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 <sys/stat.h>
#include <unistd.h>
+#include <errno.h>
/*}}}*/
// CacheGenerator::pkgCacheGenerator - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* We set the diry flag and make sure that is written to the disk */
-pkgCacheGenerator::pkgCacheGenerator(DynamicMMap &Map) : Map(Map), Cache(Map)
+pkgCacheGenerator::pkgCacheGenerator(DynamicMMap &Map,OpProgress &Prog) :
+ Map(Map), Cache(Map), Progress(&Prog)
{
+ CurrentFile = 0;
+
if (_error->PendingError() == true)
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;
+ unsigned int Counter = 0;
while (List.Step() == true)
{
// Get a pointer to the package structure
string PackageName = List.Package();
- pkgCache::PkgIterator Pkg;
- Cache.FindPkg(PackageName);
- if (Pkg.end() == true)
- {
- if (NewPackage(Pkg,PackageName) == false)
- return false;
- }
+ if (PackageName.empty() == true)
+ return false;
+ pkgCache::PkgIterator Pkg;
+ if (NewPackage(Pkg,PackageName) == false)
+ return _error->Error("Error occured while processing %s (NewPackage)",PackageName.c_str());
+ Counter++;
+ 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
done with correct sorting */
if (Version.empty() == true)
{
if (List.UsePackage(Pkg,pkgCache::VerIterator(Cache)) == false)
- return false;
+ return _error->Error("Error occured while processing %s (UsePackage1)",PackageName.c_str());
continue;
}
pkgCache::VerIterator Ver = Pkg.VersionList();
- unsigned long *Last = &Pkg->VersionList;
- int Res;
+ map_ptrloc *Last = &Pkg->VersionList;
+ int Res = 1;
for (; Ver.end() == false; Last = &Ver->NextVer, Ver++)
{
Res = pkgVersionCompare(Version.begin(),Version.end(),Ver.VerStr(),
/* 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 false;
-
+ return _error->Error("Error occured while processing %s (UsePackage2)",PackageName.c_str());
+
if (NewFileVer(Ver,List) == false)
- return false;
+ 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 = pkgVersionCompare(Version.begin(),Version.end(),Ver.VerStr(),
+ Ver.VerStr() + strlen(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 false;
+ return _error->Error("Error occured while processing %s (NewVersion1)",PackageName.c_str());
if (List.UsePackage(Pkg,Ver) == false)
- return false;
+ return _error->Error("Error occured while processing %s (UsePackage3)",PackageName.c_str());
if (NewFileVer(Ver,List) == false)
- return false;
+ 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;
+ }
}
return true;
/* This creates a new package structure and adds it to the hash table */
bool pkgCacheGenerator::NewPackage(pkgCache::PkgIterator &Pkg,string Name)
{
+ Pkg = Cache.FindPkg(Name);
+ if (Pkg.end() == false)
+ return true;
+
// Get a structure
unsigned long Package = Map.Allocate(sizeof(pkgCache::Package));
if (Package == 0)
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)
pkgCache::VerFileIterator VF(Cache,Cache.VerFileP + VerFile);
VF->File = CurrentFile - Cache.PkgFileP;
- VF->NextFile = Ver->FileList;
- Ver->FileList = VF.Index();
+
+ // Link it to the end of the list
+ map_ptrloc *Last = &Ver->FileList;
+ for (pkgCache::VerFileIterator V = Ver.FileList(); V.end() == false; V++)
+ Last = &V->NextFile;
+ VF->NextFile = *Last;
+ *Last = VF.Index();
+
VF->Offset = List.Offset();
VF->Size = List.Size();
-
+ if (Cache.HeaderP->MaxVerFileSize < VF->Size)
+ Cache.HeaderP->MaxVerFileSize = VF->Size;
+ Cache.HeaderP->VerFileCount++;
+
return true;
}
/*}}}*/
Dep->ID = Cache.HeaderP->DependsCount++;
// Locate the target package
- pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);
- if (Pkg.end() == true)
- if (Owner->NewPackage(Pkg,PackageName) == false)
- return false;
+ pkgCache::PkgIterator Pkg;
+ if (Owner->NewPackage(Pkg,PackageName) == false)
+ return false;
// 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++)
+/* for (pkgCache::DepIterator I = Pkg.RevDependsList(); I.end() == false; I++, Hit++)
if (I->Version != 0 && I.TargetVer() == Version)
- Dep->Version = I->Version;
+ Dep->Version = I->Version;*/
if (Dep->Version == 0)
if ((Dep->Version = WriteString(Version)) == 0)
return false;
}
-
+
// Link it to the package
Dep->Package = Pkg.Index();
Dep->NextRevDepends = Pkg->RevDepends;
Pkg->RevDepends = Dep.Index();
- // Link it to the version (at the end of the list)
- unsigned long *Last = &Ver->DependsList;
- for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
- Last = &D->NextDepends;
- Dep->NextDepends = *Last;
- *Last = Dep.Index();
+ /* Link it to the version (at the end of the list)
+ Caching the old end point speeds up generation substantially */
+ if (OldDepVer != Ver)
+ {
+ OldDepLast = &Ver->DependsList;
+ for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++)
+ OldDepLast = &D->NextDepends;
+ OldDepVer = Ver;
+ }
+ Dep->NextDepends = *OldDepLast;
+ *OldDepLast = Dep.Index();
+ OldDepLast = &Dep->NextDepends;
+
return true;
}
/*}}}*/
// ---------------------------------------------------------------------
/* */
bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver,
- string PackageName,
+ string PackageName,
string Version)
{
pkgCache &Cache = Owner->Cache;
+
+ // We do not add self referencing provides
+ if (Ver.ParentPkg().Name() == PackageName)
+ return true;
// Get a structure
unsigned long Provides = Owner->Map.Allocate(sizeof(pkgCache::Provides));
if (Provides == 0)
return false;
+ Cache.HeaderP->ProvidesCount++;
// Fill it in
pkgCache::PrvIterator Prv(Cache,Cache.ProvideP + Provides,Cache.PkgP);
return false;
// Locate the target package
- pkgCache::PkgIterator Pkg = Cache.FindPkg(PackageName);
- if (Pkg.end() == true)
- if (Owner->NewPackage(Pkg,PackageName) == false)
- return false;
+ pkgCache::PkgIterator Pkg;
+ if (Owner->NewPackage(Pkg,PackageName) == false)
+ return false;
// Link it to the package
Prv->ParentPkg = Pkg.Index();
CurrentFile->mtime = Buf.st_mtime;
CurrentFile->NextFile = Cache.HeaderP->FileList;
CurrentFile->Flags = Flags;
+ CurrentFile->ID = Cache.HeaderP->PackageFileCount;
PkgFileName = File;
-
+ Cache.HeaderP->FileList = CurrentFile - Cache.PkgFileP;
+ Cache.HeaderP->PackageFileCount++;
+
if (CurrentFile->FileName == 0)
return false;
+
+ if (Progress != 0)
+ Progress->SubProgress(Buf.st_size);
+ return true;
}
/*}}}*/
// CacheGenerator::WriteUniqueString - Insert a unique string /*{{{*/
unsigned long pkgCacheGenerator::WriteUniqString(const char *S,
unsigned int Size)
{
+ /* We use a very small transient hash table here, this speeds up generation
+ by a fair amount on slower machines */
+ pkgCache::StringItem *&Bucket = UniqHash[(S[0]*5 + S[1]) % _count(UniqHash)];
+ if (Bucket != 0 &&
+ stringcmp(S,S+Size,Cache.StrP + Bucket->String) == 0)
+ return Bucket->String;
+
// Search for an insertion point
pkgCache::StringItem *I = Cache.StringItemP + Cache.HeaderP->StringList;
int Res = 1;
- unsigned long *Last = &Cache.HeaderP->StringList;
+ map_ptrloc *Last = &Cache.HeaderP->StringList;
for (; I != Cache.StringItemP; Last = &I->NextItem,
I = Cache.StringItemP + I->NextItem)
{
- Res = strncmp(Cache.StrP + I->String,S,Size);
- if (Res == 0 && *(Cache.StrP + I->String + Size) != 0)
- Res = 1;
+ Res = stringcmp(S,S+Size,Cache.StrP + I->String);
if (Res >= 0)
break;
}
// Match
if (Res == 0)
+ {
+ Bucket = I;
return I->String;
+ }
// Get a structure
unsigned long Item = Map.Allocate(sizeof(pkgCache::StringItem));
if (ItemP->String == 0)
return 0;
+ Bucket = ItemP;
return ItemP->String;
}
/*}}}*/
+
+// SrcCacheCheck - Check if the source package cache is uptodate /*{{{*/
+// ---------------------------------------------------------------------
+/* The source cache is checked against the source list and the files
+ on disk, any difference results in a false. */
+bool pkgSrcCacheCheck(pkgSourceList &List)
+{
+ 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)
+ 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;
+ }
+
+ pkgCache Cache(Map);
+ if (_error->PendingError() == true)
+ {
+ _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++)
+ {
+ // Search for a match in the source list
+ bool Bad = true;
+ for (pkgSourceList::const_iterator I = List.begin();
+ I != List.end(); I++)
+ {
+ // 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;
+ }
+ }
+
+ // Check if the file matches what was cached
+ Bad |= !F.IsOk();
+ if (Bad == true)
+ return false;
+ }
+
+ 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;
+ }
+
+ 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;
+}
+ /*}}}*/
+// AddStatusSize - Add the size of the status files /*{{{*/
+// ---------------------------------------------------------------------
+/* This adds the size of all the status files to the size counter */
+bool pkgAddStatusSize(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;
+
+ return true;
+}
+ /*}}}*/
+// MergeStatus - Add the status files to the cache /*{{{*/
+// ---------------------------------------------------------------------
+/* This adds the status files to the map */
+bool pkgMergeStatus(OpProgress &Progress,pkgCacheGenerator &Gen,
+ unsigned long &CurrentSize,unsigned long TotalSize)
+{
+ // 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++)
+ {
+ // 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());
+ }
+
+ return true;
+}
+ /*}}}*/
+// GenerateSrcCache - Write the source package lists to the map /*{{{*/
+// ---------------------------------------------------------------------
+/* This puts the source package cache into the given generator. */
+bool pkgGenerateSrcCache(pkgSourceList &List,OpProgress &Progress,
+ pkgCacheGenerator &Gen,
+ unsigned long &CurrentSize,unsigned long &TotalSize)
+{
+ 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 (pkgAddStatusSize(TotalSize) == false)
+ return false;
+
+ // Generate the pkg source cache
+ CurrentSize = 0;
+ for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++)
+ {
+ // Only cache deb source types.
+ if (I->Type != pkgSourceList::Item::Deb)
+ continue;
+
+ string File = ListDir + URItoFileName(I->PackagesURI());
+
+ if (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,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)
+ {
+ FileFd Rel(RFile,FileFd::ReadOnly);
+ if (_error->PendingError() == true)
+ return false;
+ Parser.LoadReleaseInfo(Gen.GetCurFile(),Rel);
+ }
+ }
+
+ return true;
+}
+ /*}}}*/
+// MakeStatusCache - Generates a cache that includes the status files /*{{{*/
+// ---------------------------------------------------------------------
+/* This copies the package source cache and then merges the status and
+ xstatus files into it. */
+bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress)
+{
+ Progress.OverallProgress(0,1,1,"Reading Package Lists");
+
+ 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);
+ 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)
+ {
+ Progress.OverallProgress(1,1,1,"Reading Package Lists");
+ return true;
+ }
+
+ // 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 (pkgAddStatusSize(TotalSize) == false)
+ return false;
+
+ 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) ||
+ (errno == ENOENT);
+
+ if (Writeable == 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;
+
+ MMap *Map = new MMap(File,MMap::Public | MMap::ReadOnly);
+ 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)
+ {
+ DynamicMMap *Map = new DynamicMMap(MMap::Public);
+ if (_error->PendingError() == true)
+ {
+ delete Map;
+ return 0;
+ }
+
+ pkgCacheGenerator Gen(*Map,Progress);
+ unsigned long CurrentSize = 0;
+ unsigned long TotalSize = 0;
+ if (pkgGenerateSrcCache(List,Progress,Gen,CurrentSize,TotalSize) == false)
+ {
+ delete Map;
+ return 0;
+ }
+
+ // Merge in the source caches
+ if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false)
+ {
+ delete Map;
+ return 0;
+ }
+
+ return Map;
+ }
+
+ if (PkgOk == true)
+ {
+ 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)
+ {
+ delete Map;
+ return 0;
+ }
+ return Map;
+ }
+
+ // 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);
+ if (_error->PendingError() == true)
+ {
+ delete Map;
+ return 0;
+ }
+
+ // 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);
+
+ // Compute the progress
+ unsigned long TotalSize = 0;
+ if (pkgAddStatusSize(TotalSize) == false)
+ {
+ delete Map;
+ return 0;
+ }
+
+ unsigned long CurrentSize = 0;
+ if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false)
+ {
+ delete Map;
+ return 0;
+ }
+
+ return Map;
+}
+ /*}}}*/
projects / apt.git / blobdiff