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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: clean.cc,v 1.4 2001/02/20 07:03:17 jgg Exp $
/* ######################################################################
Clean - Clean out downloaded directories
##################################################################### */
/*}}}*/
// Includes /*{{{*/
#include <config.h>
#include <apt-pkg/aptconfiguration.h>
#include <apt-pkg/clean.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/strutl.h>
#include <string>
#include <dirent.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <apti18n.h>
/*}}}*/
// ArchiveCleaner::Go - Perform smart cleanup of the archive /*{{{*/
// ---------------------------------------------------------------------
/* Scan the directory for files to erase, we check the version information
against our database to see if it is interesting */
bool pkgArchiveCleaner::Go(std::string Dir,pkgCache &Cache)
{
bool CleanInstalled = _config->FindB("APT::Clean-Installed",true);
if(Dir == "/")
return _error->Error(_("Clean of %s is not supported"), Dir.c_str());
// non-existing directories are always clean
// we do not check for a directory explicitly to support symlinks
if (FileExists(Dir) == false)
return true;
auto const withoutChangingDir = dynamic_cast<pkgArchiveCleaner2*>(this);
int const dirfd = open(Dir.c_str(), O_RDONLY | O_DIRECTORY | O_CLOEXEC);
if (dirfd == -1)
return _error->Errno("open",_("Unable to read %s"),Dir.c_str());
std::string CWD;
if (withoutChangingDir == nullptr)
{
CWD = SafeGetCWD();
if (fchdir(dirfd) != 0)
return _error->Errno("fchdir",_("Unable to change to %s"),Dir.c_str());
}
DIR * const D = fdopendir(dirfd);
if (D == nullptr)
return _error->Errno("opendir",_("Unable to read %s"),Dir.c_str());
for (struct dirent *Dir = readdir(D); Dir != 0; Dir = readdir(D))
{
// Skip some files..
if (strcmp(Dir->d_name,"lock") == 0 ||
strcmp(Dir->d_name,"partial") == 0 ||
strcmp(Dir->d_name,"lost+found") == 0 ||
strcmp(Dir->d_name,".") == 0 ||
strcmp(Dir->d_name,"..") == 0)
continue;
struct stat St;
if (fstatat(dirfd, Dir->d_name,&St, 0) != 0)
{
_error->Errno("stat",_("Unable to stat %s."),Dir->d_name);
closedir(D);
return false;
}
// Grab the package name
const char *I = Dir->d_name;
for (; *I != 0 && *I != '_';I++);
if (*I != '_')
continue;
std::string Pkg = DeQuoteString(std::string(Dir->d_name,I-Dir->d_name));
// Grab the version
const char *Start = I + 1;
for (I = Start; *I != 0 && *I != '_';I++);
if (*I != '_')
continue;
std::string Ver = DeQuoteString(std::string(Start,I-Start));
// Grab the arch
Start = I + 1;
for (I = Start; *I != 0 && *I != '.' ;I++);
if (*I != '.')
continue;
std::string const Arch = DeQuoteString(std::string(Start,I-Start));
// ignore packages of unconfigured architectures
if (APT::Configuration::checkArchitecture(Arch) == false)
continue;
// Lookup the package
pkgCache::PkgIterator P = Cache.FindPkg(Pkg, Arch);
if (P.end() != true)
{
pkgCache::VerIterator V = P.VersionList();
for (; V.end() == false; ++V)
{
// See if we can fetch this version at all
bool IsFetchable = false;
for (pkgCache::VerFileIterator J = V.FileList();
J.end() == false; ++J)
{
if (CleanInstalled == true &&
J.File().Flagged(pkgCache::Flag::NotSource))
continue;
IsFetchable = true;
break;
}
// See if this version matches the file
if (IsFetchable == true && Ver == V.VerStr())
break;
}
// We found a match, keep the file
if (V.end() == false)
continue;
}
if (withoutChangingDir == nullptr)
{
APT_IGNORE_DEPRECATED_PUSH
Erase(Dir->d_name, Pkg, Ver, St);
APT_IGNORE_DEPRECATED_POP
}
else
withoutChangingDir->Erase(dirfd, Dir->d_name, Pkg, Ver, St);
}
closedir(D);
if (withoutChangingDir == nullptr && chdir(CWD.c_str()) != 0)
return _error->Errno("chdir", _("Unable to change to %s"),Dir.c_str());
return true;
}
/*}}}*/
pkgArchiveCleaner::pkgArchiveCleaner() : d(NULL) {}
pkgArchiveCleaner::~pkgArchiveCleaner() {}
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