summaryrefslogtreecommitdiff
path: root/apt-pkg
diff options
context:
space:
mode:
authorJay Freeman (saurik) <saurik@saurik.com>2017-01-29 15:01:00 -0800
committerJay Freeman (saurik) <saurik@saurik.com>2017-01-29 15:01:00 -0800
commitbaec76f5f0f9fcbd71f6e2afaa7fc85543bd624c (patch)
treecb0599a658d44b3145d263ac321b97bfebbdd481 /apt-pkg
parent9fa247dc9ba2aa28ae564e96cba5b2b23bcac91b (diff)
The entire concept of PendingError() is flawed :/.
Diffstat (limited to 'apt-pkg')
-rw-r--r--apt-pkg/cachefile.cc18
-rw-r--r--apt-pkg/contrib/error.cc9
-rw-r--r--apt-pkg/contrib/error.h20
-rw-r--r--apt-pkg/deb/debindexfile.cc3
-rw-r--r--apt-pkg/deb/deblistparser.cc2
-rw-r--r--apt-pkg/indexfile.cc3
-rw-r--r--apt-pkg/pkgcachegen.cc54
-rw-r--r--apt-pkg/policy.cc3
8 files changed, 71 insertions, 41 deletions
diff --git a/apt-pkg/cachefile.cc b/apt-pkg/cachefile.cc
index b5f32fc29..90f803ad6 100644
--- a/apt-pkg/cachefile.cc
+++ b/apt-pkg/cachefile.cc
@@ -90,7 +90,7 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
return false;
Cache.reset(new pkgCache(Map.get()));
if (_error->PendingError() == true)
- return false;
+ return _error->ReturnError();
this->Cache = Cache.release();
this->Map = Map.release();
@@ -102,7 +102,7 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
return false;
if (_error->PendingError() == true)
- return false;
+ return _error->ReturnError();
if (BuildSourceList(Progress) == false)
return false;
@@ -118,14 +118,8 @@ bool pkgCacheFile::BuildCaches(OpProgress *Progress, bool WithLock)
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();
@@ -159,7 +153,7 @@ bool pkgCacheFile::BuildPolicy(OpProgress * /*Progress*/)
Policy.reset(new pkgPolicy(Cache));
if (_error->PendingError() == true)
- return false;
+ return _error->ReturnError();
if (ReadPinFile(*Policy) == false || ReadPinDir(*Policy) == false)
return false;
@@ -185,7 +179,7 @@ bool pkgCacheFile::BuildDepCache(OpProgress *Progress)
DCache.reset(new pkgDepCache(Cache,Policy));
if (_error->PendingError() == true)
- return false;
+ return _error->ReturnError();
if (DCache->Init(Progress) == false)
return false;
@@ -209,8 +203,6 @@ bool pkgCacheFile::Open(OpProgress *Progress, bool WithLock)
if (Progress != NULL)
Progress->Done();
- if (_error->PendingError() == true)
- return false;
return true;
}
@@ -256,7 +248,7 @@ bool pkgCacheFile::AddIndexFile(pkgIndexFile * const File) /*{{{*/
if (_error->PendingError() == true) {
delete Cache;
Cache = nullptr;
- return false;
+ return _error->ReturnError();
}
return true;
}
diff --git a/apt-pkg/contrib/error.cc b/apt-pkg/contrib/error.cc
index c06ea8364..7d397d2c6 100644
--- a/apt-pkg/contrib/error.cc
+++ b/apt-pkg/contrib/error.cc
@@ -227,6 +227,15 @@ void GlobalError::Discard() {
PendingFlag = false;
}
/*}}}*/
+// GlobalError::ReturnError - convert a stored error to a return code /*{{{*/
+bool GlobalError::ReturnError() {
+ for (auto &message : Messages)
+ if (message.Type == ERROR)
+ message.Type = WARNING;
+ PendingFlag = false;
+ return false;
+}
+ /*}}}*/
// GlobalError::empty - does our error list include anything? /*{{{*/
bool GlobalError::empty(MsgType const &threshold) const {
if (PendingFlag == true)
diff --git a/apt-pkg/contrib/error.h b/apt-pkg/contrib/error.h
index e56999b14..bcaa7c995 100644
--- a/apt-pkg/contrib/error.h
+++ b/apt-pkg/contrib/error.h
@@ -227,6 +227,26 @@ public: /*{{{*/
*/
inline bool PendingError() const APT_PURE {return PendingFlag;};
+ /** \brief convert a stored error to a return code
+ *
+ * Put simply, the entire concept of PendingError() is flawed :/.
+ *
+ * The typical "if (PendingError()) return false;" check that is
+ * strewn throughout the codebase "compounds", making it impossible
+ * for there to be any nuance about the notion of "error" when a
+ * subsystem needs to fail but a higher-level system needs to work.
+ *
+ * However, the codebase is also horribly broken with respect to
+ * errors, as it fails to use C++ exceptions when warranted and
+ * instead relies on this insane indirect error mechanism to check
+ * the failure status of a constructor. What is thereby needed is
+ * a way to clear the PendingError() flag without also discarding
+ * the underlying errors, so we have to convert them to warnings.
+ *
+ * \return \b false
+ */
+ bool ReturnError() APT_COLD;
+
/** \brief is the list empty?
*
* Can be used to check if the current stack level doesn't include
diff --git a/apt-pkg/deb/debindexfile.cc b/apt-pkg/deb/debindexfile.cc
index c55847305..6b162372d 100644
--- a/apt-pkg/deb/debindexfile.cc
+++ b/apt-pkg/deb/debindexfile.cc
@@ -134,6 +134,7 @@ pkgCacheListParser * debTranslationsIndex::CreateListParser(FileFd &Pkg)
if (newError)
{
delete Parser;
+ _error->ReturnError();
return nullptr;
}
else
@@ -168,6 +169,7 @@ pkgCacheListParser * debStatusIndex::CreateListParser(FileFd &Pkg)
if (newError)
{
delete Parser;
+ _error->ReturnError();
return nullptr;
}
else
@@ -250,6 +252,7 @@ pkgCacheListParser * debDebPkgFileIndex::CreateListParser(FileFd &Pkg)
if (newError)
{
delete Parser;
+ _error->ReturnError();
return nullptr;
}
else
diff --git a/apt-pkg/deb/deblistparser.cc b/apt-pkg/deb/deblistparser.cc
index 25d8e6f22..23048008b 100644
--- a/apt-pkg/deb/deblistparser.cc
+++ b/apt-pkg/deb/deblistparser.cc
@@ -76,7 +76,7 @@ string debListParser::Package() {
std::transform(Result.begin(), Result.end(), Result.begin(), tolower_ascii);
if(unlikely(Result.empty() == true))
- _error->Error("Encountered a section with no Package: header");
+ _error->Warning("Encountered a section with no Package: header");
return Result;
}
/*}}}*/
diff --git a/apt-pkg/indexfile.cc b/apt-pkg/indexfile.cc
index 74d46d699..21765388f 100644
--- a/apt-pkg/indexfile.cc
+++ b/apt-pkg/indexfile.cc
@@ -344,6 +344,7 @@ pkgCacheListParser * pkgDebianIndexFile::CreateListParser(FileFd &Pkg)
if (newError)
{
delete Parser;
+ _error->ReturnError();
return nullptr;
}
else
@@ -377,7 +378,7 @@ bool pkgDebianIndexFile::Merge(pkgCacheGenerator &Gen,OpProgress * const Prog)
File->mtime = Pkg.ModificationTime();
if (Gen.MergeList(*Parser) == false)
- return _error->Warning("Problem with MergeList %s",PackageFile.c_str());
+ return _error->Error("Problem with MergeList %s",PackageFile.c_str());
return true;
}
pkgCache::PkgFileIterator pkgDebianIndexFile::FindInCache(pkgCache &Cache) const
diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index 51bb9ec7b..8ee682db8 100644
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -70,7 +70,7 @@ bool pkgCacheGenerator::Start()
bool const newError = _error->PendingError();
_error->MergeWithStack();
if (newError)
- return false;
+ return _error->ReturnError();
if (Map.Size() <= 0)
return false;
@@ -134,7 +134,7 @@ bool pkgCacheGenerator::Start()
advoid a problem during a crash */
pkgCacheGenerator::~pkgCacheGenerator()
{
- if (_error->PendingError() == true || Map.validData() == false)
+ if (Map.validData() == false)
return;
if (Map.Sync() == false)
return;
@@ -249,10 +249,8 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
while (List.Step() == true)
{
string const PackageName = List.Package();
- if (PackageName.empty() == true) {
- _error->Warning("Encountered a section with no Package: header");
+ if (PackageName.empty() == true)
continue;
- }
Counter++;
if (Counter % 100 == 0 && Progress != 0)
@@ -276,7 +274,7 @@ bool pkgCacheGenerator::MergeList(ListParser &List,
if (NewPackage(Pkg, PackageName, Arch) == false) {
// TRANSLATOR: The first placeholder is a package name,
// the other two should be copied verbatim as they include debug info
- _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ _error->Error(_("Error occurred while processing %s (%s%d)"),
PackageName.c_str(), "NewPackage", 1);
continue;
}
@@ -340,7 +338,7 @@ bool pkgCacheGenerator::MergeListPackage(ListParser &List, pkgCache::PkgIterator
pkgCache::VerIterator Ver(Cache);
Dynamic<pkgCache::VerIterator> DynVer(Ver);
if (List.UsePackage(Pkg, Ver) == false)
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "UsePackage", 1);
// Find the right version to write the description
@@ -419,11 +417,11 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator
if (Res == 0 && Ver.end() == false && Ver->Hash == Hash)
{
if (List.UsePackage(Pkg,Ver) == false)
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "UsePackage", 2);
if (NewFileVer(Ver,List) == false)
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "NewFileVer", 1);
// Read only a single record and return
@@ -440,7 +438,7 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator
// Add a new version
map_pointer_t const verindex = NewVersion(Ver, Version, Pkg.Index(), Hash, *LastVer);
if (unlikely(verindex == 0))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "NewVersion", 1);
if (oldMap != Map.Data())
@@ -448,15 +446,15 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator
*LastVer = verindex;
if (unlikely(List.NewVersion(Ver) == false))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "NewVersion", 2);
if (unlikely(List.UsePackage(Pkg,Ver) == false))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "UsePackage", 3);
if (unlikely(NewFileVer(Ver,List) == false))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "NewFileVer", 2);
pkgCache::GrpIterator Grp = Pkg.Group();
@@ -477,12 +475,12 @@ bool pkgCacheGenerator::MergeListVersion(ListParser &List, pkgCache::PkgIterator
Dynamic<pkgCache::VerIterator> DynV(V);
for (; V.end() != true; ++V)
if (unlikely(AddImplicitDepends(V, Pkg) == false))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "AddImplicitDepends", 1);
}
}
if (unlikely(AddImplicitDepends(Grp, Pkg, Ver) == false))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Pkg.Name(), "AddImplicitDepends", 2);
// Read only a single record and return
@@ -526,7 +524,7 @@ bool pkgCacheGenerator::AddNewDescription(ListParser &List, pkgCache::VerIterato
map_pointer_t const descindex = NewDescription(Desc, lang, CurMd5, md5idx);
if (unlikely(descindex == 0))
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Ver.ParentPkg().Name(), "NewDescription", 1);
md5idx = Desc->md5sum;
@@ -540,7 +538,7 @@ bool pkgCacheGenerator::AddNewDescription(ListParser &List, pkgCache::VerIterato
*LastNextDesc = descindex;
if (NewFileDesc(Desc,List) == false)
- return _error->Warning(_("Error occurred while processing %s (%s%d)"),
+ return _error->Error(_("Error occurred while processing %s (%s%d)"),
Ver.ParentPkg().Name(), "NewFileDesc", 1);
return true;
@@ -1432,7 +1430,7 @@ static bool CheckValidity(const string &CacheFile,
{
if (Debug == true)
std::clog << "Errors are pending or Map is empty() for " << CacheFile << std::endl;
- return false;
+ return _error->ReturnError();
}
std::unique_ptr<bool[]> RlsVisited(new bool[Cache.HeaderP->ReleaseFileCount]);
@@ -1512,7 +1510,7 @@ static bool CheckValidity(const string &CacheFile,
std::clog << "Validity failed because of pending errors:" << std::endl;
_error->DumpErrors(std::clog, GlobalError::DEBUG, false);
}
- return false;
+ return _error->ReturnError();
}
if (OutMap != 0)
@@ -1575,8 +1573,10 @@ static void BuildCache(pkgCacheGenerator &Gen,
Progress->OverallProgress(CurrentSize, TotalSize, Size, _("Reading package lists"));
CurrentSize += Size;
- if (I->Merge(Gen,Progress) == false)
+ if (I->Merge(Gen,Progress) == false) {
+ _error->ReturnError();
return;
+ }
};
if (List != NULL)
@@ -1590,8 +1590,10 @@ static void BuildCache(pkgCacheGenerator &Gen,
continue;
}
- if ((*i)->Merge(Gen, Progress) == false)
+ if ((*i)->Merge(Gen, Progress) == false) {
+ _error->ReturnError();
continue;
+ }
std::vector <pkgIndexFile *> *Indexes = (*i)->GetIndexFiles();
if (Indexes != NULL)
@@ -1663,7 +1665,7 @@ static bool loadBackMMapFromFile(std::unique_ptr<pkgCacheGenerator> &Gen,
bool const newError = _error->PendingError();
_error->MergeWithStack();
if (alloc == 0 && newError)
- return false;
+ return _error->ReturnError();
if (CacheF.Read((unsigned char *)Map->Data() + alloc, CacheF.Size()) == false)
return false;
Gen.reset(new pkgCacheGenerator(Map.get(),Progress));
@@ -1849,13 +1851,15 @@ bool pkgCacheGenerator::MakeOnlyStatusCache(OpProgress *Progress,DynamicMMap **O
if (Progress != NULL)
Progress->OverallProgress(0,1,1,_("Reading package lists"));
pkgCacheGenerator Gen(Map.get(),Progress);
- if (Gen.Start() == false || _error->PendingError() == true)
+ if (Gen.Start() == false)
return false;
+ if (_error->PendingError() == true)
+ return _error->ReturnError();
BuildCache(Gen,Progress,CurrentSize,TotalSize, NULL,
Files.begin(), Files.end());
+ // We've passed the point of no return
+ _error->ReturnError();
- if (_error->PendingError() == true)
- return false;
*OutMap = Map.release();
return true;
diff --git a/apt-pkg/policy.cc b/apt-pkg/policy.cc
index 3dd6ddac4..a13510e66 100644
--- a/apt-pkg/policy.cc
+++ b/apt-pkg/policy.cc
@@ -320,7 +320,7 @@ bool ReadPinDir(pkgPolicy &Plcy,string Dir)
bool const PendingErrors = _error->PendingError();
_error->MergeWithStack();
if (PendingErrors)
- return false;
+ return _error->ReturnError();
// Read the files
for (vector<string>::const_iterator I = List.begin(); I != List.end(); ++I)
@@ -391,6 +391,7 @@ bool ReadPinFile(pkgPolicy &Plcy,string File)
if (priority < std::numeric_limits<short>::min() ||
priority > std::numeric_limits<short>::max() ||
newError) {
+ _error->ReturnError();
return _error->Error(_("%s: Value %s is outside the range of valid pin priorities (%d to %d)"),
File.c_str(), Tags.FindS("Pin-Priority").c_str(),
std::numeric_limits<short>::min(),