Please see doc/apt-pkg/cache.sgml for a more detailed description of
this format. Also be sure to keep that file up-to-date!!
- This is the general utility functions for cache managment. They provide
+ This is the general utility functions for cache management. They provide
a complete set of accessor functions for the cache. The cacheiterators
header contains the STL-like iterators that can be used to easially
navigate the cache as well as seemlessly dereference the mmap'd
#include <apt-pkg/strutl.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/mmap.h>
#include <apt-pkg/macros.h>
+#include <stddef.h>
+#include <string.h>
+#include <ostream>
+#include <vector>
#include <string>
#include <sys/stat.h>
-#include <unistd.h>
-#include <ctype.h>
#include <apti18n.h>
/*}}}*/
/* Whenever the structures change the major version should be bumped,
whenever the generator changes the minor version should be bumped. */
- MajorVersion = 8;
- MinorVersion = 0;
+ MajorVersion = 9;
+#if (APT_PKG_MAJOR >= 4 && APT_PKG_MINOR >= 13)
+ MinorVersion = 2;
+#else
+ MinorVersion = 1;
+#endif
Dirty = false;
HeaderSz = sizeof(pkgCache::Header);
if (Map.Size() < HeaderP->CacheFileSize)
return _error->Error(_("The package cache file is corrupted, it is too small"));
+ if (HeaderP->VerSysName == 0 || HeaderP->Architecture == 0 || HeaderP->Architectures == 0)
+ return _error->Error(_("The package cache file is corrupted"));
+
// Locate our VS..
- if (HeaderP->VerSysName == 0 ||
- (VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)
+ if ((VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)
return _error->Error(_("This APT does not support the versioning system '%s'"),StrP + HeaderP->VerSysName);
- // Chcek the arhcitecture
- if (HeaderP->Architecture == 0 ||
- _config->Find("APT::Architecture") != StrP + HeaderP->Architecture)
- return _error->Error(_("The package cache was built for a different architecture"));
+ // Check the architecture
+ std::vector<std::string> archs = APT::Configuration::getArchitectures();
+ std::vector<std::string>::const_iterator a = archs.begin();
+ std::string list = *a;
+ for (++a; a != archs.end(); ++a)
+ list.append(",").append(*a);
+ if (_config->Find("APT::Architecture") != StrP + HeaderP->Architecture ||
+ list != StrP + HeaderP->Architectures)
+ return _error->Error(_("The package cache was built for different architectures: %s vs %s"), StrP + HeaderP->Architectures, list.c_str());
+
return true;
}
/*}}}*/
{
unsigned long Hash = 0;
for (string::const_iterator I = Str.begin(); I != Str.end(); ++I)
- Hash = 5*Hash + tolower_ascii(*I);
+ Hash = 41 * Hash + tolower_ascii(*I);
return Hash % _count(HeaderP->PkgHashTable);
}
unsigned long pkgCache::sHash(const char *Str) const
{
- unsigned long Hash = 0;
- for (const char *I = Str; *I != 0; ++I)
- Hash = 5*Hash + tolower_ascii(*I);
+ unsigned long Hash = tolower_ascii(*Str);
+ for (const char *I = Str + 1; *I != 0; ++I)
+ Hash = 41 * Hash + tolower_ascii(*I);
return Hash % _count(HeaderP->PkgHashTable);
}
-
/*}}}*/
// Cache::SingleArchFindPkg - Locate a package by name /*{{{*/
// ---------------------------------------------------------------------
Package *Pkg = PkgP + HeaderP->PkgHashTable[Hash(Name)];
for (; Pkg != PkgP; Pkg = PkgP + Pkg->NextPackage)
{
- if (Pkg->Name != 0 && StrP[Pkg->Name] == Name[0] &&
- stringcasecmp(Name,StrP + Pkg->Name) == 0)
- return PkgIterator(*this,Pkg);
+ if (unlikely(Pkg->Name == 0))
+ continue;
+
+ int const cmp = strcasecmp(Name.c_str(), StrP + Pkg->Name);
+ if (cmp == 0)
+ return PkgIterator(*this, Pkg);
+ else if (cmp < 0)
+ break;
}
return PkgIterator(*this,0);
}
// ---------------------------------------------------------------------
/* Returns 0 on error, pointer to the package otherwise */
pkgCache::PkgIterator pkgCache::FindPkg(const string &Name, string const &Arch) {
- if (MultiArchCache() == false) {
+ if (MultiArchCache() == false && Arch != "none") {
if (Arch == "native" || Arch == "all" || Arch == "any" ||
Arch == NativeArch())
return SingleArchFindPkg(Name);
// Look at the hash bucket for the group
Group *Grp = GrpP + HeaderP->GrpHashTable[sHash(Name)];
for (; Grp != GrpP; Grp = GrpP + Grp->Next) {
- if (Grp->Name != 0 && StrP[Grp->Name] == Name[0] &&
- stringcasecmp(Name, StrP + Grp->Name) == 0)
+ if (unlikely(Grp->Name == 0))
+ continue;
+
+ int const cmp = strcasecmp(Name.c_str(), StrP + Grp->Name);
+ if (cmp == 0)
return GrpIterator(*this, Grp);
+ else if (cmp < 0)
+ break;
}
return GrpIterator(*this,0);
type in the weird debian style.. */
const char *pkgCache::CompTypeDeb(unsigned char Comp)
{
- const char *Ops[] = {"","<=",">=","<<",">>","=","!="};
- if ((unsigned)(Comp & 0xF) < 7)
- return Ops[Comp & 0xF];
- return "";
+ const char * const Ops[] = {"","<=",">=","<<",">>","=","!="};
+ if (unlikely((unsigned)(Comp & 0xF) >= sizeof(Ops)/sizeof(Ops[0])))
+ return "";
+ return Ops[Comp & 0xF];
}
/*}}}*/
// Cache::CompType - Return a string describing the compare type /*{{{*/
// ---------------------------------------------------------------------
-/* This returns a string representation of the dependency compare
+/* This returns a string representation of the dependency compare
type */
const char *pkgCache::CompType(unsigned char Comp)
{
- const char *Ops[] = {"","<=",">=","<",">","=","!="};
- if ((unsigned)(Comp & 0xF) < 7)
- return Ops[Comp & 0xF];
- return "";
+ const char * const Ops[] = {"","<=",">=","<",">","=","!="};
+ if (unlikely((unsigned)(Comp & 0xF) >= sizeof(Ops)/sizeof(Ops[0])))
+ return "";
+ return Ops[Comp & 0xF];
}
/*}}}*/
// Cache::DepType - Return a string describing the dep type /*{{{*/
if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0))
return Pkg;
}
+ // packages without an architecture
+ Pkg = FindPkg("none");
+ if (Pkg.end() == false && (PreferNonVirtual == false || Pkg->VersionList != 0))
+ return Pkg;
if (PreferNonVirtual == true)
return FindPreferredPkg(false);
// GrpIterator::operator ++ - Postfix incr /*{{{*/
// ---------------------------------------------------------------------
/* This will advance to the next logical group in the hash table. */
-void pkgCache::GrpIterator::operator ++(int)
+void pkgCache::GrpIterator::operator ++(int)
{
// Follow the current links
if (S != Owner->GrpP)
HashIndex++;
S = Owner->GrpP + Owner->HeaderP->GrpHashTable[HashIndex];
}
-};
+}
/*}}}*/
// PkgIterator::operator ++ - Postfix incr /*{{{*/
// ---------------------------------------------------------------------
/* This will advance to the next logical package in the hash table. */
-void pkgCache::PkgIterator::operator ++(int)
+void pkgCache::PkgIterator::operator ++(int)
{
// Follow the current links
if (S != Owner->PkgP)
HashIndex++;
S = Owner->PkgP + Owner->HeaderP->PkgHashTable[HashIndex];
}
-};
+}
/*}}}*/
// PkgIterator::State - Check the State of the package /*{{{*/
// ---------------------------------------------------------------------
// ---------------------------------------------------------------------
/* Return string representing of the candidate version. */
const char *
-pkgCache::PkgIterator::CandVersion() const
+pkgCache::PkgIterator::CandVersion() const
{
//TargetVer is empty, so don't use it.
VerIterator version = pkgPolicy(Owner).GetCandidateVer(*this);
if (version.IsGood())
return version.VerStr();
return 0;
-};
+}
/*}}}*/
// PkgIterator::CurVersion - Returns the current version string /*{{{*/
// ---------------------------------------------------------------------
/* Return string representing of the current version. */
const char *
-pkgCache::PkgIterator::CurVersion() const
+pkgCache::PkgIterator::CurVersion() const
{
VerIterator version = CurrentVer();
if (version.IsGood())
return CurrentVer().VerStr();
return 0;
-};
+}
/*}}}*/
// ostream operator to handle string representation of a package /*{{{*/
// ---------------------------------------------------------------------
/* Output name < cur.rent.version -> candid.ate.version | new.est.version > (section)
- Note that the characters <|>() are all literal above. Versions will be ommited
+ Note that the characters <|>() are all literal above. Versions will be omitted
if they provide no new information (e.g. there is no newer version than candidate)
If no version and/or section can be found "none" is used. */
std::ostream&
// Walk along the actual package providing versions
for (VerIterator I = DPkg.VersionList(); I.end() == false; ++I)
{
- if (Owner->VS->CheckDep(I.VerStr(),S->CompareOp,TargetVer()) == false)
+ if (IsIgnorable(I.ParentPkg()) == true)
continue;
-
- if (IsNegative() == true &&
- ParentPkg() == I.ParentPkg())
+ if (IsSatisfied(I) == false)
continue;
-
+
Size++;
if (Res != 0)
*End++ = I;
// Follow all provides
for (PrvIterator I = DPkg.ProvidesList(); I.end() == false; ++I)
{
- if (Owner->VS->CheckDep(I.ProvideVersion(),S->CompareOp,TargetVer()) == false)
+ if (IsIgnorable(I) == true)
continue;
-
- if (IsNegative() == true &&
- ParentPkg()->Group == I.OwnerPkg()->Group)
+ if (IsSatisfied(I) == false)
continue;
-
+
Size++;
if (Res != 0)
*End++ = I.OwnerVer();
}
}
/*}}}*/
+// DepIterator::IsIgnorable - should this packag/providr be ignored? /*{{{*/
+// ---------------------------------------------------------------------
+/* Deps like self-conflicts should be ignored as well as implicit conflicts
+ on virtual packages. */
+bool pkgCache::DepIterator::IsIgnorable(PkgIterator const &/*Pkg*/) const
+{
+ if (IsNegative() == false)
+ return false;
+
+ pkgCache::PkgIterator PP = ParentPkg();
+ pkgCache::PkgIterator PT = TargetPkg();
+ if (PP->Group != PT->Group)
+ return false;
+ // self-conflict
+ if (PP == PT)
+ return true;
+ pkgCache::VerIterator PV = ParentVer();
+ // ignore group-conflict on a M-A:same package - but not our implicit dependencies
+ // so that we can have M-A:same packages conflicting with their own real name
+ if ((PV->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+ {
+ // Replaces: ${self}:other ( << ${binary:Version})
+ if (S->Type == pkgCache::Dep::Replaces && S->CompareOp == pkgCache::Dep::Less && strcmp(PV.VerStr(), TargetVer()) == 0)
+ return false;
+ // Breaks: ${self}:other (!= ${binary:Version})
+ if (S->Type == pkgCache::Dep::DpkgBreaks && S->CompareOp == pkgCache::Dep::NotEquals && strcmp(PV.VerStr(), TargetVer()) == 0)
+ return false;
+ return true;
+ }
+
+ return false;
+}
+bool pkgCache::DepIterator::IsIgnorable(PrvIterator const &Prv) const
+{
+ if (IsNegative() == false)
+ return false;
+
+ PkgIterator const Pkg = ParentPkg();
+ /* Provides may never be applied against the same package (or group)
+ if it is a conflicts. See the comment above. */
+ if (Prv.OwnerPkg()->Group == Pkg->Group)
+ return true;
+ // Implicit group-conflicts should not be applied on providers of other groups
+ if (Pkg->Group == TargetPkg()->Group && Prv.OwnerPkg()->Group != Pkg->Group)
+ return true;
+
+ return false;
+}
+ /*}}}*/
+// DepIterator::IsMultiArchImplicit - added by the cache generation /*{{{*/
+// ---------------------------------------------------------------------
+/* MultiArch can be translated to SingleArch for an resolver and we did so,
+ by adding dependencies to help the resolver understand the problem, but
+ sometimes it is needed to identify these to ignore them… */
+bool pkgCache::DepIterator::IsMultiArchImplicit() const
+{
+ if (ParentPkg()->Arch != TargetPkg()->Arch &&
+ (S->Type == pkgCache::Dep::Replaces ||
+ S->Type == pkgCache::Dep::DpkgBreaks ||
+ S->Type == pkgCache::Dep::Conflicts))
+ return true;
+ return false;
+}
+ /*}}}*/
+// DepIterator::IsSatisfied - check if a version satisfied the dependency /*{{{*/
+bool pkgCache::DepIterator::IsSatisfied(VerIterator const &Ver) const
+{
+ return Owner->VS->CheckDep(Ver.VerStr(),S->CompareOp,TargetVer());
+}
+bool pkgCache::DepIterator::IsSatisfied(PrvIterator const &Prv) const
+{
+ return Owner->VS->CheckDep(Prv.ProvideVersion(),S->CompareOp,TargetVer());
+}
+ /*}}}*/
// ostream operator to handle string representation of a dependecy /*{{{*/
// ---------------------------------------------------------------------
/* */
// VerIterator::Downloadable - Checks if the version is downloadable /*{{{*/
// ---------------------------------------------------------------------
/* */
-bool pkgCache::VerIterator::Downloadable() const
+APT_PURE bool pkgCache::VerIterator::Downloadable() const
{
VerFileIterator Files = FileList();
for (; Files.end() == false; ++Files)
// ---------------------------------------------------------------------
/* This checks to see if any of the versions files are not NotAutomatic.
True if this version is selectable for automatic installation. */
-bool pkgCache::VerIterator::Automatic() const
+APT_PURE bool pkgCache::VerIterator::Automatic() const
{
VerFileIterator Files = FileList();
for (; Files.end() == false; ++Files)
return Res;
}
/*}}}*/
+// VerIterator::MultiArchType - string representing MultiArch flag /*{{{*/
+const char * pkgCache::VerIterator::MultiArchType() const
+{
+ if ((S->MultiArch & pkgCache::Version::Same) == pkgCache::Version::Same)
+ return "same";
+ else if ((S->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
+ return "foreign";
+ else if ((S->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
+ return "allowed";
+ return "none";
+}
+ /*}}}*/
// PkgFileIterator::IsOk - Checks if the cache is in sync with the file /*{{{*/
// ---------------------------------------------------------------------
/* This stats the file and compares its stats with the ones that were
/*}}}*/
// VerIterator::TranslatedDescription - Return the a DescIter for locale/*{{{*/
// ---------------------------------------------------------------------
-/* return a DescIter for the current locale or the default if none is
+/* return a DescIter for the current locale or the default if none is
* found
*/
pkgCache::DescIterator pkgCache::VerIterator::TranslatedDescription() const
if (strcmp(Desc.LanguageCode(), "") == 0)
return Desc;
return DescriptionList();
-};
+}
/*}}}*/
+// PrvIterator::IsMultiArchImplicit - added by the cache generation /*{{{*/
+// ---------------------------------------------------------------------
+/* MultiArch can be translated to SingleArch for an resolver and we did so,
+ by adding provides to help the resolver understand the problem, but
+ sometimes it is needed to identify these to ignore them… */
+bool pkgCache::PrvIterator::IsMultiArchImplicit() const
+{
+ pkgCache::PkgIterator const Owner = OwnerPkg();
+ pkgCache::PkgIterator const Parent = ParentPkg();
+ if (strcmp(Owner.Arch(), Parent.Arch()) != 0 || Owner->Name == Parent->Name)
+ return true;
+ return false;
+}
+ /*}}}*/
projects / apt.git / blobdiff