X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/c37b9502fd00e03d7722314f94beb4f1441f621f..cc0a4c82b3c132abba9b9ec35fd61bc8b45a1b80:/apt-pkg/cachefile.cc?ds=inline diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc index 8b3b02171..b5f32fc29 100644 --- a/apt-pkg/cachefile.cc +++ b/apt-pkg/cachefile.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: cachefile.cc,v 1.7 2001/07/01 20:49:08 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 @@ -12,9 +12,7 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ -#ifdef __GNUG__ -#pragma implementation "apt-pkg/cachefile.h" -#endif +#include #include #include @@ -23,14 +21,29 @@ #include #include #include - +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + #include /*}}}*/ - // CacheFile::CacheFile - Constructor /*{{{*/ -// --------------------------------------------------------------------- -/* */ -pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), DCache(0), Policy(0) +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) { } /*}}}*/ @@ -39,82 +52,298 @@ pkgCacheFile::pkgCacheFile() : Map(0), Cache(0), DCache(0), Policy(0) /* */ pkgCacheFile::~pkgCacheFile() { - delete DCache; + if (ExternOwner == false) + { + delete DCache; + delete Cache; + delete Map; + } delete Policy; - delete Cache; - delete Map; - _system->UnLock(true); -} + delete SrcList; + if (ExternOwner == false) + _system->UnLock(true); +} /*}}}*/ -// CacheFile::Open - Open the cache files, creating if necessary /*{{{*/ -// --------------------------------------------------------------------- -/* */ -bool pkgCacheFile::Open(OpProgress &Progress,bool WithLock) +// 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 Cache; + std::unique_ptr 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 (_config->FindB("Debug::NoLocking",false) == true) - WithLock = false; - + 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.")); + + if (BuildSourceList(Progress) == false) + return false; // Read the caches - bool Res = pkgMakeStatusCache(List,Progress,&Map,!WithLock); - Progress.Done(); + 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->empty() == false) + if (_error->PendingError() == true) _error->Warning(_("You may want to run apt-get update to correct these problems")); - Cache = new pkgCache(Map); + if (Cache == nullptr) + Cache.reset(new pkgCache(Map.get())); if (_error->PendingError() == true) return false; - - // The policy engine - Policy = new pkgPolicy(Cache); + this->Map = Map.release(); + this->Cache = Cache.release(); + + return true; +} + /*}}}*/ +// CacheFile::BuildSourceList - Open and build all relevant sources.list/*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool pkgCacheFile::BuildSourceList(OpProgress * /*Progress*/) +{ + std::unique_ptr 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*/) +{ + std::unique_ptr Policy; + if (this->Policy != NULL) + return true; + + Policy.reset(new pkgPolicy(Cache)); if (_error->PendingError() == true) return false; - if (ReadPinFile(*Policy) == false) + + if (ReadPinFile(*Policy) == false || ReadPinDir(*Policy) == false) return false; - - // Create the dependency cache - DCache = new pkgDepCache(Cache,Policy); + + this->Policy = Policy.release(); + return true; +} + /*}}}*/ +// CacheFile::BuildDepCache - Open and build the dependency cache /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool pkgCacheFile::BuildDepCache(OpProgress *Progress) +{ + if (BuildCaches(Progress, false) == false) + return false; + + std::unique_ptr 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; - - DCache->Init(&Progress); - Progress.Done(); + 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) +{ + 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; 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(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 + { + ExternOwner = false; + Map = NULL; + } + _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 caches = GetListOfFilesInDir(cachedir, false); + for (std::vector::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 caches = GetListOfFilesInDir(cachedir, false); + for (std::vector::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() { - delete DCache; + if (ExternOwner == false) + { + delete DCache; + delete Cache; + delete Map; + } + else + ExternOwner = false; delete Policy; - delete Cache; - delete Map; + delete SrcList; _system->UnLock(true); - Map = 0; - DCache = 0; - Policy = 0; - Cache = 0; + Map = NULL; + DCache = NULL; + Policy = NULL; + Cache = NULL; + SrcList = NULL; } /*}}}*/