X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/803fafcbaa2fe4e1c49249e589d50f892b1b2424..607bab3fe856d228f22e1cd96dbb7204e2f3375d:/apt-pkg/cachefile.cc diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc index 88c3fa81a..909da5cb4 100644 --- a/apt-pkg/cachefile.cc +++ b/apt-pkg/cachefile.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: cachefile.cc,v 1.2 1999/04/19 02:35:38 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 @@ -12,84 +12,305 @@ ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ -#ifdef __GNUG__ -#pragma implementation "apt-pkg/cachefile.h" -#endif +#include #include #include #include #include #include - /*}}}*/ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + /*}}}*/ // 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() +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) +{ + if (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 = new MMap(file, MMap::Public|MMap::ReadOnly); + if (unlikely(Map->validData() == false)) + return false; + Cache = new pkgCache(Map); + return _error->PendingError() == false; + } + + if (WithLock == true) + if (_system->Lock() == false) + return false; + + if (_error->PendingError() == true) + return false; + + BuildSourceList(Progress); + + // Read the caches + Cache = nullptr; + bool Res = pkgCacheGenerator::MakeStatusCache(*SrcList,Progress,&Map, &Cache, true); + 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 = new pkgCache(Map); + if (_error->PendingError() == true) + return false; + return true; +} + /*}}}*/ +// CacheFile::BuildSourceList - Open and build all relevant sources.list/*{{{*/ // --------------------------------------------------------------------- /* */ -pkgCacheFile::~pkgCacheFile() +bool pkgCacheFile::BuildSourceList(OpProgress * /*Progress*/) { - delete Cache; - delete Map; - delete Lock; -} + if (SrcList != NULL) + return true; + + SrcList = new pkgSourceList(); + if (SrcList->ReadMainList() == false) + return _error->Error(_("The list of sources could not be read.")); + return true; +} + /*}}}*/ +// CacheFile::BuildPolicy - Open and build all relevant preferences /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool pkgCacheFile::BuildPolicy(OpProgress * /*Progress*/) +{ + if (Policy != NULL) + return true; + + Policy = new pkgPolicy(Cache); + if (_error->PendingError() == true) + return false; + + if (ReadPinFile(*Policy) == false || ReadPinDir(*Policy) == false) + return false; + + return true; +} + /*}}}*/ +// CacheFile::BuildDepCache - Open and build the dependency cache /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool pkgCacheFile::BuildDepCache(OpProgress *Progress) +{ + if (DCache != NULL) + return true; + + if (BuildPolicy(Progress) == false) + return false; + + DCache = new pkgDepCache(Cache,Policy); + if (_error->PendingError() == true) + return false; + + return DCache->Init(Progress); +} /*}}}*/ // 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(Map); + if (dynmmap != nullptr) + { + { + pkgCacheGenerator Gen(dynmmap, nullptr); + if (Gen.Start() == false || File->Merge(Gen, nullptr) == false) + return false; + } + Cache = new pkgCache(Map); + return _error->PendingError() == false; + } + 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 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() +{ + 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; +} + /*}}}*/