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diff --git a/sbuild/chroot-btrfs-snapshot.h b/sbuild/chroot-btrfs-snapshot.h
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+/* Copyright © 2005-2013  Roger Leigh <rleigh@debian.org>
+ *
+ * schroot is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * schroot is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *********************************************************************/
+
+#ifndef SBUILD_CHROOT_BTRFS_SNAPSHOT_H
+#define SBUILD_CHROOT_BTRFS_SNAPSHOT_H
+
+#include <sbuild/chroot.h>
+
+namespace sbuild
+{
+
+  /**
+   * A chroot stored on an BTRFS logical volume (LV).
+   *
+   * A snapshot LV will be created and mounted on demand.
+   */
+  class chroot_btrfs_snapshot : public chroot
+  {
+  protected:
+    /// The constructor.
+    chroot_btrfs_snapshot ();
+
+    /// The copy constructor.
+    chroot_btrfs_snapshot (const chroot_btrfs_snapshot& rhs);
+
+    friend class chroot;
+
+  public:
+    /// The destructor.
+    virtual ~chroot_btrfs_snapshot ();
+
+    virtual chroot::ptr
+    clone () const;
+
+    virtual chroot::ptr
+    clone_session (std::string const& session_id,
+                   std::string const& alias,
+                   std::string const& user,
+                   bool               root) const;
+
+    virtual chroot::ptr
+    clone_source () const;
+
+    /**
+     * Get the source subvolume path.  This is used by "btrfs
+     * subvolume snapshot".
+     *
+     * @returns the source subvolume.
+     */
+    std::string const&
+    get_source_subvolume () const;
+
+    /**
+     * Set the source subvolume path.  This is used by "btrfs
+     * subvolume snapshot".
+     *
+     * @param source_subvolume the source subvolume.
+     */
+    void
+    set_source_subvolume (std::string const& source_subvolume);
+
+    /**
+     * Get the snapshot directory.
+     *
+     * @returns the directory.
+     */
+    std::string const&
+    get_snapshot_directory () const;
+
+    /**
+     * Set the snapshot directory.
+     *
+     * @param snapshot_directory the snapshot directory.
+     */
+    void
+    set_snapshot_directory (std::string const& snapshot_directory);
+
+    /**
+     * Get the snapshot name.  This is used by "btrfs subvolume
+     * snapshot", and is the full path to the snapshot.
+     *
+     * @returns the name.
+     */
+    std::string const&
+    get_snapshot_name () const;
+
+    /**
+     * Set the snapshot name.  This is used by "btrfs subvolume
+     * snapshot", and is the full path to the snapshot.
+     *
+     * @param snapshot_name the snapshot name.
+     */
+    void
+    set_snapshot_name (std::string const& snapshot_name);
+
+    virtual std::string const&
+    get_chroot_type () const;
+
+    virtual std::string
+    get_path () const;
+
+    virtual void
+    setup_env (chroot const& chroot,
+               environment&  env) const;
+
+    virtual session_flags
+    get_session_flags (chroot const& chroot) const;
+
+  protected:
+    virtual void
+    setup_lock (chroot::setup_type type,
+                bool               lock,
+                int                status);
+
+    virtual void
+    get_details (chroot const& chroot,
+                 format_detail& detail) const;
+
+    virtual void
+    get_used_keys (string_list& used_keys) const;
+
+    virtual void
+    get_keyfile (chroot const& chroot,
+                 keyfile& keyfile) const;
+
+    virtual void
+    set_keyfile (chroot&        chroot,
+                 keyfile const& keyfile);
+
+  private:
+    /// Btrfs source subvolume
+    std::string source_subvolume;
+    /// Btrfs snapshot path
+    std::string snapshot_directory;
+    /// Btrfs snapshot name
+    std::string snapshot_name;
+  };
+
+}
+
+#endif /* SBUILD_CHROOT_BTRFS_SNAPSHOT_H */
+
+/*
+ * Local Variables:
+ * mode:C++
+ * End:
+ */