bool CoreUnix::FilesystemSupportsLargeFiles (const FilePath &filePath) const
{
string path = filePath;
size_t pos;
while ((pos = path.find_last_of ('/')) != string::npos)
{
path = path.substr (0, pos);
if (path.empty())
break;
try
{
MountedFilesystemList filesystems = GetMountedFilesystems (DevicePath(), path);
if (!filesystems.empty())
{
const MountedFilesystem &fs = *filesystems.front();
if (fs.Type == "fat"
|| fs.Type == "fat32"
|| fs.Type == "vfat"
|| fs.Type == "fatfs"
|| fs.Type == "msdos"
|| fs.Type == "msdosfs"
|| fs.Type == "umsdos"
|| fs.Type == "dos"
|| fs.Type == "dosfs"
|| fs.Type == "pcfs"
)
{
return false;
}
return true;
}
}
catch (...) { }
}
return true; // Prevent errors if the filesystem cannot be identified
}
void CoreUnix::MountFilesystem (const DevicePath &devicePath, const DirectoryPath &mountPoint, const string &filesystemType, bool readOnly, const string &systemMountOptions) const
{
if (GetMountedFilesystems (DevicePath(), mountPoint).size() > 0)
throw MountPointUnavailable (SRC_POS);
list <string> args;
string options;
if (!filesystemType.empty())
{
#ifdef TC_SOLARIS
args.push_back ("-F");
#else
args.push_back ("-t");
#endif
args.push_back (filesystemType);
}
if (readOnly)
options = "-oro";
if (!systemMountOptions.empty())
{
if (options.empty())
options = "-o";
else
options += ",";
options += systemMountOptions;
}
if (!options.empty())
args.push_back (options);
args.push_back ("--");
args.push_back (devicePath);
args.push_back (mountPoint);
Process::Execute ("mount", args);
}
shared_ptr <VolumeInfo> CoreUnix::MountVolume (MountOptions &options)
{
CoalesceSlotNumberAndMountPoint (options);
if (IsVolumeMounted (*options.Path))
throw VolumeAlreadyMounted (SRC_POS);
Cipher::EnableHwSupport (!options.NoHardwareCrypto);
shared_ptr <Volume> volume;
while (true)
{
try
{
volume = OpenVolume (
options.Path,
options.PreserveTimestamps,
options.Password,
options.Keyfiles,
options.Protection,
options.ProtectionPassword,
options.ProtectionKeyfiles,
options.SharedAccessAllowed,
VolumeType::Unknown,
options.UseBackupHeaders,
options.PartitionInSystemEncryptionScope
);
options.Password.reset();
}
catch (SystemException &e)
{
if (options.Protection != VolumeProtection::ReadOnly
&& (e.GetErrorCode() == EROFS || e.GetErrorCode() == EACCES || e.GetErrorCode() == EPERM))
{
// Read-only filesystem
options.Protection = VolumeProtection::ReadOnly;
continue;
}
throw;
}
break;
}
if (options.Path->IsDevice())
{
if (volume->GetFile()->GetDeviceSectorSize() != volume->GetSectorSize())
throw ParameterIncorrect (SRC_POS);
#if defined (TC_LINUX)
if (volume->GetSectorSize() != TC_SECTOR_SIZE_LEGACY)
{
if (options.Protection == VolumeProtection::HiddenVolumeReadOnly)
throw UnsupportedSectorSizeHiddenVolumeProtection();
if (options.NoKernelCrypto)
throw UnsupportedSectorSizeNoKernelCrypto();
}
#endif
}
// Find a free mount point for FUSE service
MountedFilesystemList mountedFilesystems = GetMountedFilesystems ();
string fuseMountPoint;
for (int i = 1; true; i++)
{
stringstream path;
path << GetTempDirectory() << "/" << GetFuseMountDirPrefix() << i;
FilesystemPath fsPath (path.str());
bool inUse = false;
foreach_ref (const MountedFilesystem &mf, mountedFilesystems)
{
if (mf.MountPoint == path.str())
{
inUse = true;
break;
}
}
if (!inUse)
{
try
{
if (fsPath.IsDirectory())
fsPath.Delete();
throw_sys_sub_if (mkdir (path.str().c_str(), S_IRUSR | S_IXUSR) == -1, path.str());
fuseMountPoint = fsPath;
break;
}
catch (...)
{
if (i > 255)
throw TemporaryDirectoryFailure (SRC_POS, StringConverter::ToWide (path.str()));
}
}
}
try
{
FuseService::Mount (volume, options.SlotNumber, fuseMountPoint);
}
catch (...)
{
try
{
DirectoryPath (fuseMountPoint).Delete();
}
catch (...) { }
throw;
}
try
{
// Create a mount directory if a default path has been specified
bool mountDirCreated = false;
string mountPoint;
if (!options.NoFilesystem && options.MountPoint)
{
mountPoint = *options.MountPoint;
#ifndef TC_MACOSX
if (mountPoint.find (GetDefaultMountPointPrefix()) == 0 && !options.MountPoint->IsDirectory())
{
Directory::Create (*options.MountPoint);
try
{
throw_sys_sub_if (chown (mountPoint.c_str(), GetRealUserId(), GetRealGroupId()) == -1, mountPoint);
} catch (ParameterIncorrect&) { }
mountDirCreated = true;
}
#endif
}
try
{
try
{
MountVolumeNative (volume, options, fuseMountPoint);
}
catch (NotApplicable&)
{
MountAuxVolumeImage (fuseMountPoint, options);
}
}
catch (...)
{
if (mountDirCreated)
remove (mountPoint.c_str());
throw;
}
}
catch (...)
{
try
{
VolumeInfoList mountedVolumes = GetMountedVolumes (*options.Path);
if (mountedVolumes.size() > 0)
{
shared_ptr <VolumeInfo> mountedVolume (mountedVolumes.front());
DismountVolume (mountedVolume);
}
}
catch (...) { }
throw;
}
VolumeInfoList mountedVolumes = GetMountedVolumes (*options.Path);
if (mountedVolumes.size() != 1)
throw ParameterIncorrect (SRC_POS);
VolumeEventArgs eventArgs (mountedVolumes.front());
VolumeMountedEvent.Raise (eventArgs);
return mountedVolumes.front();
}
bool CoreUnix::IsMountPointAvailable (const DirectoryPath &mountPoint) const
{
return GetMountedFilesystems (DevicePath(), mountPoint).size() == 0;
}
