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-rw-r--r--apt-pkg/pkgcachegen.cc242
1 files changed, 189 insertions, 53 deletions
diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index d7e830df5..ee65c94d1 100644
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -1,6 +1,6 @@
// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: pkgcachegen.cc,v 1.34 1999/04/04 01:33:09 jgg Exp $
+// $Id: pkgcachegen.cc,v 1.35 1999/04/18 06:36:36 jgg Exp $
/* ######################################################################
Package Cache Generator - Generator for the cache structure.
@@ -618,6 +618,70 @@ static bool pkgMergeStatus(OpProgress &Progress,pkgCacheGenerator &Gen,
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 (pkgAddSourcesSize(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
@@ -634,67 +698,18 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress)
if (SrcOk == false)
{
string SCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
- string ListDir = _config->FindDir("Dir::State::lists");
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);
-
- // Prepare the progress indicator
+ unsigned long CurrentSize = 0;
unsigned long 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)
+ if (pkgGenerateSrcCache(List,Progress,Gen,CurrentSize,TotalSize) == false)
return false;
- // Generate the pkg source cache
- unsigned long 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);
- }
- }
-
// Write the src cache
Gen.GetCache().HeaderP->Dirty = false;
if (SCacheF.Write(Map.Data(),Map.Size()) == false)
@@ -736,3 +751,124 @@ bool pkgMakeStatusCache(pkgSourceList &List,OpProgress &Progress)
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)
+ {
+ 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 (pkgAddSourcesSize(TotalSize) == false)
+ {
+ delete Map;
+ return 0;
+ }
+
+ unsigned long CurrentSize = 0;
+ if (pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize) == false)
+ {
+ delete Map;
+ return 0;
+ }
+
+ return Map;
+}
+ /*}}}*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-05 16:03:04 +0000