// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: cachefile.cc,v 1.3 1999/05/04 20:09:48 jgg Exp $
+// $Id: cachefile.cc,v 1.8 2002/04/27 04:28:04 jgg Exp $
/* ######################################################################
CacheFile - Simple wrapper class for opening, generating and whatnot
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
-#ifdef __GNUG__
-#pragma implementation "apt-pkg/cachefile.h"
-#endif
+#include <config.h>
#include <apt-pkg/cachefile.h>
#include <apt-pkg/error.h>
#include <apt-pkg/sourcelist.h>
#include <apt-pkg/pkgcachegen.h>
#include <apt-pkg/configuration.h>
- /*}}}*/
+#include <apt-pkg/policy.h>
+#include <apt-pkg/pkgsystem.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/progress.h>
+#include <apt-pkg/depcache.h>
+#include <apt-pkg/mmap.h>
+#include <apt-pkg/pkgcache.h>
+#include <apt-pkg/indexfile.h>
+
+#include <string.h>
+#include <unistd.h>
+#include <string>
+#include <vector>
+#include <memory>
+#include <apti18n.h>
+ /*}}}*/
// CacheFile::CacheFile - Constructor /*{{{*/
+pkgCacheFile::pkgCacheFile() : d(NULL), ExternOwner(false), Map(NULL), Cache(NULL),
+ DCache(NULL), SrcList(NULL), Policy(NULL)
+{
+}
+pkgCacheFile::pkgCacheFile(pkgDepCache * const Owner) : d(NULL), ExternOwner(true),
+ Map(&Owner->GetCache().GetMap()), Cache(&Owner->GetCache()),
+ DCache(Owner), SrcList(NULL), Policy(NULL)
+{
+}
+ /*}}}*/
+// CacheFile::~CacheFile - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
-pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), Lock(0)
+pkgCacheFile::~pkgCacheFile()
{
+ if (ExternOwner == false)
+ {
+ delete DCache;
+ delete Cache;
+ delete Map;
+ }
+ delete Policy;
+ delete SrcList;
+ if (ExternOwner == false)
+ _system->UnLock(true);
}
/*}}}*/
-// CacheFile::~CacheFile - Destructor /*{{{*/
+// CacheFile::BuildCaches - Open and build the cache files /*{{{*/
+class APT_HIDDEN ScopedErrorMerge {
+public:
+ ScopedErrorMerge() { _error->PushToStack(); }
+ ~ScopedErrorMerge() { _error->MergeWithStack(); }
+};
+
+bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
+{
+ std::unique_ptr<pkgCache> Cache;
+ std::unique_ptr<MMap> Map;
+
+ if (this->Cache != NULL)
+ return true;
+
+ ScopedErrorMerge sem;
+ if (_config->FindB("pkgCacheFile::Generate", true) == false)
+ {
+ FileFd file(_config->FindFile("Dir::Cache::pkgcache"), FileFd::ReadOnly);
+ if (file.IsOpen() == false || file.Failed())
+ return false;
+ Map.reset(new MMap(file, MMap::Public|MMap::ReadOnly));
+ if (unlikely(Map->validData() == false))
+ return false;
+ Cache.reset(new pkgCache(Map.get()));
+ if (_error->PendingError() == true)
+ return false;
+
+ this->Cache = Cache.release();
+ this->Map = Map.release();
+ return true;
+ }
+
+ if (WithLock == true)
+ if (_system->Lock() == false)
+ return false;
+
+ if (_error->PendingError() == true)
+ return false;
+
+ if (BuildSourceList(Progress) == false)
+ return false;
+
+ // Read the caches
+ MMap *TmpMap = nullptr;
+ pkgCache *TmpCache = nullptr;
+ bool Res = pkgCacheGenerator::MakeStatusCache(*SrcList,Progress,&TmpMap, &TmpCache, true);
+ Map.reset(TmpMap);
+ Cache.reset(TmpCache);
+ if (Progress != NULL)
+ Progress->Done();
+ if (Res == false)
+ return _error->Error(_("The package lists or status file could not be parsed or opened."));
+
+ /* This sux, remove it someday */
+ if (_error->PendingError() == true)
+ _error->Warning(_("You may want to run apt-get update to correct these problems"));
+
+ if (Cache == nullptr)
+ Cache.reset(new pkgCache(Map.get()));
+ if (_error->PendingError() == true)
+ return false;
+ this->Map = Map.release();
+ this->Cache = Cache.release();
+
+ return true;
+}
+ /*}}}*/
+// CacheFile::BuildSourceList - Open and build all relevant sources.list/*{{{*/
// ---------------------------------------------------------------------
/* */
-pkgCacheFile::~pkgCacheFile()
+bool pkgCacheFile::BuildSourceList(OpProgress * /*Progress*/)
+{
+ std::unique_ptr<pkgSourceList> SrcList;
+ if (this->SrcList != NULL)
+ return true;
+
+ SrcList.reset(new pkgSourceList());
+ if (SrcList->ReadMainList() == false)
+ return _error->Error(_("The list of sources could not be read."));
+ this->SrcList = SrcList.release();
+ return true;
+}
+ /*}}}*/
+// CacheFile::BuildPolicy - Open and build all relevant preferences /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgCacheFile::BuildPolicy(OpProgress * /*Progress*/)
{
- delete Cache;
- delete Map;
- delete Lock;
-}
+ std::unique_ptr<pkgPolicy> Policy;
+ if (this->Policy != NULL)
+ return true;
+
+ Policy.reset(new pkgPolicy(Cache));
+ if (_error->PendingError() == true)
+ return false;
+
+ if (ReadPinFile(*Policy) == false || ReadPinDir(*Policy) == false)
+ return false;
+
+ this->Policy = Policy.release();
+ return true;
+}
+ /*}}}*/
+// CacheFile::BuildDepCache - Open and build the dependency cache /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+bool pkgCacheFile::BuildDepCache(OpProgress *Progress)
+{
+ std::unique_ptr<pkgDepCache> DCache;
+ if (this->DCache != NULL)
+ return true;
+
+ if (BuildPolicy(Progress) == false)
+ return false;
+
+ DCache.reset(new pkgDepCache(Cache,Policy));
+ if (_error->PendingError() == true)
+ return false;
+ if (DCache->Init(Progress) == false)
+ return false;
+
+ this->DCache = DCache.release();
+ return true;
+}
/*}}}*/
// CacheFile::Open - Open the cache files, creating if necessary /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock)
+bool pkgCacheFile::Open(OpProgress *Progress, bool WithLock)
{
- if (WithLock == true)
- Lock = new pkgDpkgLock;
-
+ if (BuildCaches(Progress,WithLock) == false)
+ return false;
+
+ if (BuildPolicy(Progress) == false)
+ return false;
+
+ if (BuildDepCache(Progress) == false)
+ return false;
+
+ if (Progress != NULL)
+ Progress->Done();
if (_error->PendingError() == true)
return false;
- // Read the source list
- pkgSourceList List;
- if (List.ReadMainList() == false)
- return _error->Error("The list of sources could not be read.");
-
- /* Build all of the caches, using the cache files if we are locking
- (ie as root) */
- if (WithLock == true)
- {
- pkgMakeStatusCache(List,Progress);
- Progress.Done();
- if (_error->PendingError() == true)
- return _error->Error("The package lists or status file could not be parsed or opened.");
- if (_error->empty() == false)
- _error->Warning("You may want to run apt-get update to correct theses missing files");
-
- // Open the cache file
- FileFd File(_config->FindFile("Dir::Cache::pkgcache"),FileFd::ReadOnly);
- if (_error->PendingError() == true)
- return false;
-
- Map = new MMap(File,MMap::Public | MMap::ReadOnly);
- if (_error->PendingError() == true)
+ return true;
+}
+ /*}}}*/
+bool pkgCacheFile::AddIndexFile(pkgIndexFile * const File) /*{{{*/
+{
+ if (SrcList == NULL)
+ if (BuildSourceList() == false)
return false;
+ SrcList->AddVolatileFile(File);
+
+ if (Cache == nullptr || File->HasPackages() == false || File->Exists() == false)
+ return true;
+
+ if (File->FindInCache(*Cache).end() == false)
+ return _error->Warning("Duplicate sources.list entry %s",
+ File->Describe().c_str());
+
+ if (ExternOwner == false)
+ {
+ delete DCache;
+ delete Cache;
+ }
+ delete Policy;
+ DCache = NULL;
+ Policy = NULL;
+ Cache = NULL;
+
+ if (ExternOwner == false)
+ {
+ // a dynamic mmap means that we have build at least parts of the cache
+ // in memory – which we might or might not have written to disk.
+ // Throwing away would therefore be a very costly operation we want to avoid
+ DynamicMMap * dynmmap = dynamic_cast<DynamicMMap*>(Map);
+ if (dynmmap != nullptr)
+ {
+ {
+ pkgCacheGenerator Gen(dynmmap, nullptr);
+ if (Gen.Start() == false || File->Merge(Gen, nullptr) == false)
+ return false;
+ }
+ Cache = new pkgCache(Map);
+ if (_error->PendingError() == true) {
+ delete Cache;
+ Cache = nullptr;
+ return false;
+ }
+ return true;
+ }
+ else
+ {
+ delete Map;
+ Map = NULL;
+ }
}
else
{
- Map = pkgMakeStatusCacheMem(List,Progress);
- Progress.Done();
- if (Map == 0)
- return false;
+ ExternOwner = false;
+ Map = NULL;
}
-
- // Create the dependency cache
- Cache = new pkgDepCache(*Map,Progress);
- Progress.Done();
- if (_error->PendingError() == true)
- return false;
-
+ _system->UnLock(true);
return true;
}
/*}}}*/
+// CacheFile::RemoveCaches - remove all cache files from disk /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgCacheFile::RemoveCaches()
+{
+ std::string const pkgcache = _config->FindFile("Dir::cache::pkgcache");
+ std::string const srcpkgcache = _config->FindFile("Dir::cache::srcpkgcache");
+
+ if (pkgcache.empty() == false && RealFileExists(pkgcache) == true)
+ RemoveFile("RemoveCaches", pkgcache);
+ if (srcpkgcache.empty() == false && RealFileExists(srcpkgcache) == true)
+ RemoveFile("RemoveCaches", srcpkgcache);
+ if (pkgcache.empty() == false)
+ {
+ std::string cachedir = flNotFile(pkgcache);
+ std::string cachefile = flNotDir(pkgcache);
+ if (cachedir.empty() != true && cachefile.empty() != true && DirectoryExists(cachedir) == true)
+ {
+ cachefile.append(".");
+ std::vector<std::string> caches = GetListOfFilesInDir(cachedir, false);
+ for (std::vector<std::string>::const_iterator file = caches.begin(); file != caches.end(); ++file)
+ {
+ std::string nuke = flNotDir(*file);
+ if (strncmp(cachefile.c_str(), nuke.c_str(), cachefile.length()) != 0)
+ continue;
+ RemoveFile("RemoveCaches", *file);
+ }
+ }
+ }
+
+ if (srcpkgcache.empty() == true)
+ return;
+
+ std::string cachedir = flNotFile(srcpkgcache);
+ std::string cachefile = flNotDir(srcpkgcache);
+ if (cachedir.empty() == true || cachefile.empty() == true || DirectoryExists(cachedir) == false)
+ return;
+ cachefile.append(".");
+ std::vector<std::string> caches = GetListOfFilesInDir(cachedir, false);
+ for (std::vector<std::string>::const_iterator file = caches.begin(); file != caches.end(); ++file)
+ {
+ std::string nuke = flNotDir(*file);
+ if (strncmp(cachefile.c_str(), nuke.c_str(), cachefile.length()) != 0)
+ continue;
+ RemoveFile("RemoveCaches", *file);
+ }
+}
+ /*}}}*/
+// CacheFile::Close - close the cache files /*{{{*/
+// ---------------------------------------------------------------------
+/* */
+void pkgCacheFile::Close()
+{
+ if (ExternOwner == false)
+ {
+ delete DCache;
+ delete Cache;
+ delete Map;
+ }
+ else
+ ExternOwner = false;
+ delete Policy;
+ delete SrcList;
+ _system->UnLock(true);
+
+ Map = NULL;
+ DCache = NULL;
+ Policy = NULL;
+ Cache = NULL;
+ SrcList = NULL;
+}
+ /*}}}*/
projects / apt.git / blobdiff