private System.IO.DriveInfo GetDrive()
{
string root;
if (Platform.IsClientPosix)
{
string path = Util.AppendDirSeparator(systemIO.PathGetFullPath(m_path));
root = "/";
//Find longest common prefix from mounted devices
//TODO: Can trick this with symlinks, where the symlink is on one mounted volume,
// and the actual storage is on another
foreach (System.IO.DriveInfo di in System.IO.DriveInfo.GetDrives())
{
if (path.StartsWith(Util.AppendDirSeparator(di.Name), StringComparison.Ordinal) && di.Name.Length > root.Length)
{
root = di.Name;
}
}
}
else
{
root = systemIO.GetPathRoot(m_path);
}
// On Windows, DriveInfo is only valid for lettered drives. (e.g., not for UNC paths and shares)
// So only attempt to get it if we aren't on Windows or if the root starts with a letter.
if (!Platform.IsClientWindows || (root.Length > 0 && char.IsLetter(root[0])))
{
try
{
return(new System.IO.DriveInfo(root));
}
catch (ArgumentException)
{
// If there was a problem, fall back to returning null
}
}
return(null);
}