X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/094a497dd2dba1f47157e07d57f97c338a5ddaa0..a7e66b170369fe1e1e7fdd2c3abd8c85e9b15bf9:/apt-pkg/pkgcachegen.cc diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc index e0f8f3a19..7cf332b68 100644 --- a/apt-pkg/pkgcachegen.cc +++ b/apt-pkg/pkgcachegen.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: pkgcachegen.cc,v 1.9 1998/07/12 23:58:34 jgg Exp $ +// $Id: pkgcachegen.cc,v 1.26 1998/12/14 03:39:15 jgg Exp $ /* ###################################################################### Package Cache Generator - Generator for the cache structure. @@ -17,6 +17,11 @@ #include #include #include +#include +#include +#include +#include + #include #include @@ -26,7 +31,8 @@ // 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) { if (_error->PendingError() == true) return; @@ -64,18 +70,18 @@ bool pkgCacheGenerator::MergeList(ListParser &List) { List.Owner = this; + 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 (NewPackage(Pkg,PackageName) == false) + return _error->Error("Error occured while processing %s (NewPackage)",PackageName.c_str()); + Counter++; + if (Counter % 100 == 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 */ @@ -83,12 +89,12 @@ bool pkgCacheGenerator::MergeList(ListParser &List) 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; + __apt_ptrloc *Last = &Pkg->VersionList; int Res = 1; for (; Ver.end() == false; Last = &Ver->NextVer, Ver++) { @@ -103,10 +109,10 @@ bool pkgCacheGenerator::MergeList(ListParser &List) if (Res == 0) { 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()); continue; } @@ -115,13 +121,13 @@ bool pkgCacheGenerator::MergeList(ListParser &List) *Last = NewVersion(Ver,Version,*Last); Ver->ParentPkg = Pkg.Index(); 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()); } return true; @@ -132,6 +138,10 @@ bool pkgCacheGenerator::MergeList(ListParser &List) /* 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) @@ -166,11 +176,20 @@ bool pkgCacheGenerator::NewFileVer(pkgCache::VerIterator &Ver, 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 + __apt_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; } /*}}}*/ @@ -222,10 +241,9 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver, 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) @@ -237,19 +255,28 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver, 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 */ + static pkgCache::VerIterator OldVer(Cache); + static __apt_ptrloc *OldLast; + if (OldVer != Ver) + { + OldLast = &Ver->DependsList; + for (pkgCache::DepIterator D = Ver.DependsList(); D.end() == false; D++) + OldLast = &D->NextDepends; + OldVer = Ver; + } + Dep->NextDepends = *OldLast; + *OldLast = Dep.Index(); + OldLast = &Dep->NextDepends; + return true; } /*}}}*/ @@ -257,15 +284,20 @@ bool pkgCacheGenerator::ListParser::NewDepends(pkgCache::VerIterator Ver, // --------------------------------------------------------------------- /* */ 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); @@ -276,10 +308,9 @@ bool pkgCacheGenerator::ListParser::NewProvides(pkgCache::VerIterator Ver, 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(); @@ -310,10 +341,16 @@ bool pkgCacheGenerator::SelectFile(string File,unsigned long Flags) 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; + + Progress.SubProgress(Buf.st_size); + return true; } /*}}}*/ // CacheGenerator::WriteUniqueString - Insert a unique string /*{{{*/ @@ -326,7 +363,7 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S, // Search for an insertion point pkgCache::StringItem *I = Cache.StringItemP + Cache.HeaderP->StringList; int Res = 1; - unsigned long *Last = &Cache.HeaderP->StringList; + __apt_ptrloc *Last = &Cache.HeaderP->StringList; for (; I != Cache.StringItemP; Last = &I->NextItem, I = Cache.StringItemP + I->NextItem) { @@ -355,3 +392,319 @@ unsigned long pkgCacheGenerator::WriteUniqString(const char *S, 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++) + { + 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++) + { + 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; +} + /*}}}*/ +// AddSourcesSize - Add the size of the status files /*{{{*/ +// --------------------------------------------------------------------- +/* This adds the size of all the status files to the size counter */ +static bool pkgAddSourcesSize(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 */ +static 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; +} + /*}}}*/ +// 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"); + 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 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 + unsigned long CurrentSize = 0; + for (pkgSourceList::const_iterator I = List.begin(); I != List.end(); I++) + { + 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) + 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 (pkgAddSourcesSize(TotalSize) == false) + return false; + + unsigned long CurrentSize = 0; + return pkgMergeStatus(Progress,Gen,CurrentSize,TotalSize); +} + /*}}}*/