TMFS

__/\\\\\\\\\\\\\\\___/\\\\____________/\\\\___/\\\\\\\\\\\\\\\___/\\\\\\\\\\\___
 _\///////\\\/////___\/\\\\\\________/\\\\\\__\/\\\///////////__/\\\/////////\\\_
  _______\/\\\________\/\\\//\\\____/\\\//\\\__\/\\\____________\//\\\______\///__
   _______\/\\\________\/\\\\///\\\/\\\/_\/\\\__\/\\\\\\\\\\\_____\////\\\_________
    _______\/\\\________\/\\\__\///\\\/___\/\\\__\/\\\///////_________\////\\\______
     _______\/\\\________\/\\\____\///_____\/\\\__\/\\\___________________\////\\\___
      _______\/\\\________\/\\\_____________\/\\\__\/\\\____________/\\\______\//\\\__
       _______\/\\\________\/\\\_____________\/\\\__\/\\\___________\///\\\\\\\\\\\/___
        _______\///_________\///______________\///___\///______________\///////////_____

Time Machine File System is a read-only virtual filesystem which helps you to read your Apple's time machine backup.

This filesystem does not targets performances, it has been written for a friend who has lost his macbook and wants to recover its data on Linux.

It's actually not perfect, feel free to report bugs or suggestions at [https://github.com/abique/tmfs/issues][https://github.com/abique/tmfs/issues].

Enjoy!

How to use it?

First you have to mount your HFS partition, by doing something like:

mount /dev/sdXX /mnt/hfs-root

Then as root run:

tmfs /mnt/hfs-root /mnt/tm-root -ouid=$(id -u),gid=$(id -g),allow_other

Then as a normal user, go to the directory /mnt/tm-root/ and enjoy your data! :-)

Sparsebundle Disk Images

I haven't used it myself and I can't comment too much on it, but in short you should be able to mount a sparse bundle using https://github.com/torarnv/sparsebundlefs and then mount tmfs on top of it. Please have a look at their project page there should be further explanation.

Dependancies

• c++ 17
• cmake >= 3.16
• fuse

How to build and install it?

Manually, run these commands:

mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr/local ..
make
DESTDIR=install-test make install

Then if the installation looks ok to you in install-test/ do make install as root with sudo make install.

Internals

Time Machine structure:

Snapshot root: ${hfs_root}/Backups.backupdb/${comp_name}/${date}/${disk_name}/

Hardlink count equals to dir_id: ${hfs_root}/Backups.backupdb/${comp_name}/${date}/${disk_name}/.../Folder

Real folder with data: ${hfs_root}/.HFS+ Private Directory Data/dir_${dir_id}/

Our representation:

/${comp_name}/${date}/${disk_name}/${Real root}