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-rw-r--r--apt-pkg/pkgcachegen.cc59
1 files changed, 31 insertions, 28 deletions
diff --git a/apt-pkg/pkgcachegen.cc b/apt-pkg/pkgcachegen.cc
index f0b5a982e..23b606e01 100644
--- a/apt-pkg/pkgcachegen.cc
+++ b/apt-pkg/pkgcachegen.cc
@@ -1363,24 +1363,27 @@ public:
ScopedErrorRevert() { _error->PushToStack(); }
~ScopedErrorRevert() { _error->RevertToStack(); }
};
-static bool CheckValidity(const string &CacheFile,
+static bool CheckValidity(FileFd &CacheFile, std::string const &CacheFileName,
pkgSourceList &List,
FileIterator const Start,
FileIterator const End,
MMap **OutMap = 0,
pkgCache **OutCache = 0)
{
+ if (CacheFileName.empty())
+ return false;
ScopedErrorRevert ser;
+
bool const Debug = _config->FindB("Debug::pkgCacheGen", false);
// No file, certainly invalid
- if (CacheFile.empty() == true || FileExists(CacheFile) == false)
+ if (CacheFile.Open(CacheFileName, FileFd::ReadOnly, FileFd::None) == false)
{
if (Debug == true)
- std::clog << "CacheFile " << CacheFile << " doesn't exist" << std::endl;
+ std::clog << "CacheFile " << CacheFileName << " doesn't exist" << std::endl;
return false;
}
- if (List.GetLastModifiedTime() > GetModificationTime(CacheFile))
+ if (List.GetLastModifiedTime() > CacheFile.ModificationTime())
{
if (Debug == true)
std::clog << "sources.list is newer than the cache" << std::endl;
@@ -1388,8 +1391,7 @@ static bool CheckValidity(const string &CacheFile,
}
// Map it
- FileFd CacheF(CacheFile,FileFd::ReadOnly);
- std::unique_ptr<MMap> Map(new MMap(CacheF,0));
+ std::unique_ptr<MMap> Map(new MMap(CacheFile,0));
if (unlikely(Map->validData()) == false)
return false;
std::unique_ptr<pkgCache> CacheP(new pkgCache(Map.get()));
@@ -1397,7 +1399,7 @@ static bool CheckValidity(const string &CacheFile,
if (_error->PendingError() || Map->Size() == 0)
{
if (Debug == true)
- std::clog << "Errors are pending or Map is empty() for " << CacheFile << std::endl;
+ std::clog << "Errors are pending or Map is empty() for " << CacheFileName << std::endl;
return false;
}
@@ -1623,13 +1625,12 @@ static bool writeBackMMapToFile(pkgCacheGenerator * const Gen, DynamicMMap * con
return true;
}
static bool loadBackMMapFromFile(std::unique_ptr<pkgCacheGenerator> &Gen,
- std::unique_ptr<DynamicMMap> &Map, OpProgress * const Progress, std::string const &FileName)
+ std::unique_ptr<DynamicMMap> &Map, OpProgress * const Progress, FileFd &CacheF)
{
Map.reset(CreateDynamicMMap(NULL, 0));
if (unlikely(Map->validData()) == false)
return false;
- FileFd CacheF(FileName, FileFd::ReadOnly);
- if (CacheF.IsOpen() == false || CacheF.Failed())
+ if (CacheF.IsOpen() == false || CacheF.Seek(0) == false || CacheF.Failed())
return false;
_error->PushToStack();
map_pointer_t const alloc = Map->RawAllocate(CacheF.Size());
@@ -1661,20 +1662,20 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
return false;
// Decide if we can write to the files..
- string const CacheFile = _config->FindFile("Dir::Cache::pkgcache");
- string const SrcCacheFile = _config->FindFile("Dir::Cache::srcpkgcache");
+ string const CacheFileName = _config->FindFile("Dir::Cache::pkgcache");
+ string const SrcCacheFileName = _config->FindFile("Dir::Cache::srcpkgcache");
// ensure the cache directory exists
- if (CacheFile.empty() == false || SrcCacheFile.empty() == false)
+ if (CacheFileName.empty() == false || SrcCacheFileName.empty() == false)
{
string dir = _config->FindDir("Dir::Cache");
size_t const len = dir.size();
if (len > 5 && dir.find("/apt/", len - 6, 5) == len - 5)
dir = dir.substr(0, len - 5);
- if (CacheFile.empty() == false)
- CreateDirectory(dir, flNotFile(CacheFile));
- if (SrcCacheFile.empty() == false)
- CreateDirectory(dir, flNotFile(SrcCacheFile));
+ if (CacheFileName.empty() == false)
+ CreateDirectory(dir, flNotFile(CacheFileName));
+ if (SrcCacheFileName.empty() == false)
+ CreateDirectory(dir, flNotFile(SrcCacheFileName));
}
if (Progress != NULL)
@@ -1683,8 +1684,8 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
bool pkgcache_fine = false;
bool srcpkgcache_fine = false;
bool volatile_fine = List.GetVolatileFiles().empty();
-
- if (CheckValidity(CacheFile, List, Files.begin(), Files.end(), volatile_fine ? OutMap : NULL,
+ FileFd CacheFile;
+ if (CheckValidity(CacheFile, CacheFileName, List, Files.begin(), Files.end(), volatile_fine ? OutMap : NULL,
volatile_fine ? OutCache : NULL) == true)
{
if (Debug == true)
@@ -1692,9 +1693,11 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
pkgcache_fine = true;
srcpkgcache_fine = true;
}
+
+ FileFd SrcCacheFile;
if (pkgcache_fine == false)
{
- if (CheckValidity(SrcCacheFile, List, Files.end(), Files.end()) == true)
+ if (CheckValidity(SrcCacheFile, SrcCacheFileName, List, Files.end(), Files.end()) == true)
{
if (Debug == true)
std::clog << "srcpkgcache.bin is valid - it can be reused" << std::endl;
@@ -1712,10 +1715,10 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
bool Writeable = false;
if (srcpkgcache_fine == false || pkgcache_fine == false)
{
- if (CacheFile.empty() == false)
- Writeable = access(flNotFile(CacheFile).c_str(),W_OK) == 0;
- else if (SrcCacheFile.empty() == false)
- Writeable = access(flNotFile(SrcCacheFile).c_str(),W_OK) == 0;
+ if (CacheFileName.empty() == false)
+ Writeable = access(flNotFile(CacheFileName).c_str(),W_OK) == 0;
+ else if (SrcCacheFileName.empty() == false)
+ Writeable = access(flNotFile(SrcCacheFileName).c_str(),W_OK) == 0;
if (Debug == true)
std::clog << "Do we have write-access to the cache files? " << (Writeable ? "YES" : "NO") << std::endl;
@@ -1754,8 +1757,8 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
Files.end(),Files.end()) == false)
return false;
- if (Writeable == true && SrcCacheFile.empty() == false)
- if (writeBackMMapToFile(Gen.get(), Map.get(), SrcCacheFile) == false)
+ if (Writeable == true && SrcCacheFileName.empty() == false)
+ if (writeBackMMapToFile(Gen.get(), Map.get(), SrcCacheFileName) == false)
return false;
}
@@ -1767,8 +1770,8 @@ bool pkgCacheGenerator::MakeStatusCache(pkgSourceList &List,OpProgress *Progress
Files.begin(), Files.end()) == false)
return false;
- if (Writeable == true && CacheFile.empty() == false)
- if (writeBackMMapToFile(Gen.get(), Map.get(), CacheFile) == false)
+ if (Writeable == true && CacheFileName.empty() == false)
+ if (writeBackMMapToFile(Gen.get(), Map.get(), CacheFileName) == false)
return false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 07:41:11 +0000