/// <summary>
/// Mounts a new file system.
/// </summary>
/// <param name="source">The source of the filesystem. This is usually a device name, but can also be another directory.</param>
/// <param name="target">The path including the name of the mount point, where to mount the new filesystem.</param>
public static void Mount(string source, string target)
{
// Retrieve the parent directory of the mount
DirectoryEntry parent = PathResolver.Resolve(rootNode, ref target, PathResolutionFlags.RetrieveParent);
if (parent == null)
{
throw new System.ArgumentException();
}
IFileSystem root = FileSystemFactory.CreateFileSystem(source);
if (root == null)
{
throw new System.ArgumentException();
}
PathSplitter path = new PathSplitter(target);
DirectoryEntry.Allocate(parent, path.Last, root.Root);
}
/// <summary>
/// Performs a standard path lookup.
/// </summary>
/// <param name="rootDirectory">The root directory.</param>
/// <param name="path">The path to resolve.</param>
/// <returns>The directory entry of the resolved path.</returns>
/// <exception cref="System.Security.SecurityException">The caller does not have access to the path or a component. For example the caller does not have the right to traverse the path.</exception>
/// <exception cref="System.IO.PathTooLongException">The path is too long to traverse. This can be the result of circular symbolic links in the path.</exception>
/// <exception cref="System.IO.FileNotFoundException">The file or folder path not found.</exception>
/// <exception cref="System.IO.DirectoryNotFoundException">A path component was not found.</exception>
/// <remarks>
/// This call my result in other exceptions not specified in the above list. Other exceptions can be thrown by IVfsNode implementations, which are visited during the traversal
/// process. For example a network file system node may throw an exception, if the server is unreachable.
/// </remarks>
public static DirectoryEntry Resolve (DirectoryEntry rootDirectory, ref string path)
{
// FIXME: Remove the root argument. The filesystem root should be unique for a process as part of a security model similar to jails, e.g. give apps from
// untrusted sources their private filesystem regions.
// FIXME: Get the root from the thread execution block
DirectoryEntry current = rootDirectory;
PathResolver resolver = new PathResolver (rootDirectory, current);
return resolver.Resolve (ref path, PathResolutionFlags.None);
}
/// <summary>
/// Performs a path lookup obeying to the passed flags.
/// </summary>
/// <param name="rootDirectory">The root directory.</param>
/// <param name="path">The path to resolve.</param>
/// <param name="flags">Controls aspects of the path lookup process.</param>
/// <returns>The directory entry of the resolved path.</returns>
/// <exception cref="System.Security.SecurityException">The caller does not have access to the path or a component. For example the caller does not have the right to traverse the path.</exception>
/// <exception cref="System.IO.PathTooLongException">The path is too long to traverse. This can be the result of circular symbolic links in the path.</exception>
/// <exception cref="System.IO.FileNotFoundException">The file or folder path was not found. This exception can be prevented by specifying PathResolutionFlags.DoNotThrowNotFoundException.</exception>
/// <exception cref="System.IO.DirectoryNotFoundException">A path component was not found. This exception can be prevented by specifying PathResolutionFlags.DoNotThrowNotFoundException.</exception>
/// <remarks>
/// This call my result in other exceptions not specified in the above list. Other exceptions can be thrown by IVfsNode implementations, which are visited during the traversal
/// process. For example a network file system node may throw an exception, if the server is unreachable.
/// </remarks>
public static DirectoryEntry Resolve (DirectoryEntry rootDirectory, ref string path, PathResolutionFlags flags)
{
// FIXME: Get the root from the thread execution block
DirectoryEntry current = rootDirectory;
PathResolver resolver = new PathResolver (rootDirectory, current);
return resolver.Resolve (ref path, flags);
}
/// <summary>
/// Changes the current directory in the thread execution block.
/// </summary>
/// <param name="path">The path to change to. This path may be relative or absolute.</param>
/// <
public static void ChangeDirectory(string path)
{
DirectoryEntry entry = PathResolver.Resolve(rootNode, ref path);
// FIXME: Set the current directory in the thread execution block
}
