CHANGES

Release 1.8 (development)
-------------------------

.. rubric:: Enhancements

* Implement adaptive image updates based on block hash indices.
  This works by adding an index file containing the hashes of each 4kiB image
  block in the image to the bundle and then using this to check whether a block
  is available locally during installation.
  If that's the case, RAUC doesn't need to download this block.
  Together with streaming, this means that only a small part of the bundle needs
  to be downloaded as long as the changes are localized.
  See the :ref:`documentation for details <sec-adaptive-updates>`.
* Add a slot type which provides atomic bootloader updates for SoCs (like the
  Rockchip RK3568) which search for a valid image at multiple fixed offsets. (by
  Matthias Fend)
  See the :ref:`documentation for details <sec-raw-partition-fallback>`.
* Add a configuration option for additional arguments to pass to ``casync
  extract``. (by Ludovico de Nittis)
* Add initial support for desync (an alternative casync implementation). (by
  Ludovico de Nittis)
* Add support for a RAUC data-directory on a shared partition.
  Unless otherwise configured, this is also used to store the central slot
  status data.
  See the :ref:`documentation for details <data-directory>`.
* Allow setting a passphrase for encrypted PEM files via the environment
  (``RAUC_KEY_PASSPHRASE``). (by Marc Kleine-Budde)
* Ignore ``meta.<label>`` sections in the manifest.
  The ``meta.<label>`` sections are intended to provide a forwards-compatible
  way to add data to the manifest which is not interpreted by RAUC in any way.
  Currently, they are just ignored when reading a manifest. In future releases,
  they will be accessible via ``rauc info``, the D-Bus API and in
  hooks/handlers.

.. rubric:: Bug fixes

* Avoid retrying on HTTP 404 errors during streaming.
* Improve error handling during loop device block size configuration. (by Ahmad
  Fatoum)

.. rubric:: Testing

* Refactor the statistics code to make it useful for testing as well.
* Replace Ubuntu 21.10 test container with 22.04

.. rubric:: Code

* Log error messages from CURL for failed streaming requests.
* Add doctype to D-Bus XML specification. (by Morgan Bengtsson)

.. rubric:: Documentation

* Document that the required kernel features can be configured as modules as
  well.
* Document how to load and store the GRUB environment from a shared partition.

Contributions from: Ahmad Fatoum, Enrico Jörns, Jan Lübbe, Ludovico de Nittis,
Marc Kleine-Budde, Matthias Fend, Morgan Bengtsson, Ulrich Ölmann

Release 1.7 (released Jun 3, 2022)
----------------------------------

.. rubric:: Enhancements

* Add support for streaming installation from a HTTP(S) server for bundles in
  ``verity`` and ``crypt`` formats.
  This avoids the need for a temporary bundle storage location and prepares for
  more efficient *adaptive* (originally *incremental*) updates.
  See the :ref:`documentation for details <http-streaming>`.
* Add support for bundle encryption (``crypt`` format).
  This is useful when bundles contain confidential data and are not otherwise
  protected during transport (for example, via HTTP, unauthenticated HTTPS or
  USB storage).
  See the :ref:`documentation for details <sec-encryption>`.
* Optionally allow verification with partial chains.
  If enabled, RAUC will also treat intermediate certificates in the keyring as
  trust-anchors, in addition to self-signed root CA certificates. This makes it
  possible to trust only one (or more) sub-tree(s) in a larger PKI.
  See the :ref:`documentation for details <allow-partial-chain>`.
* Divert log messages to stderr, which is useful for machine readable output
  (``rauc status --output-format=json``).
  This is only enabled when built with glib 2.68 or newer.
  (by Ludovico de Nittis)
* Only allow the root step to report 100% progress. (by Steven Rau)
* Add the ``--trust-environment`` option to ``rauc extract`` and ``rauc
  extract-signature``.
* Improve the error message printed on compatible mismatch.

.. rubric:: Bug fixes

* Don't enforce bundle exclusivity if the environment is trusted. (by Ludovico
  de Nittis)
* Clean up error handling for 'rauc status'.
* Fix some memory leaks. (by Zygmunt Krynicki)
* Fix unintentional removal of existing bundles on error.
* Fix build error when PRIu64 is not defined. (by Fabrice Fontaine)

.. rubric:: Testing

* Make some tests conditional on the existence of the openssl binary.
* Access rauc.io instead of example.com.
* Explicitly use Python 3 in coverity checks. (by Thorsten Scherer)
* Add build tests on Ubuntu 21.10.

.. rubric:: Code

* Add some missing files to the dist tar.gz. (by Uwe Kleine-König)
* Change minimum glib version from 2.49.3 to 2.50, allowing use of g_autoptr
  with the auto-generated DBus code.
* Use g_autofree/g_autoptr in more places.
* Use more specific error codes for device mapper error reporting.
* Prepare for incremental methods by adding an optional per-image manifest
  option.

.. note::
  Since the release of 1.7, it turned out that the name 'incremental' for this
  functionality is confusing.
  Accordingly, we decided to rename it to 'adaptive' for 1.8 and accept the
  downside of not being able to benefit from compatibility with 1.7.

.. rubric:: Documentation

* Fix some broken internal links. (by Thorsten Scherer)
* Mention Buildroot support for RAUC. (by Thomas Petazzoni)
* Fix some typos. (by Bastian Krause and Michael Riesch)
* Clean up some inconsistencies between README and main documentation.
* Fix misleading rescue slot example. (by Sean Nyekjaer)
* Fix broken links to external pages. (by Bastian Krause)

Contributions from: Bastian Krause, Fabrice Fontaine, Ludovico de Nittis,
Michael Riesch, Sean Nyekjaer, Steven Rau, Thomas Petazzoni, Thorsten Scherer,
Uwe Kleine-König, Zygmunt Krynicki

Release 1.6 (released Feb 9, 2022)
----------------------------------

.. rubric:: Enhancements

* Added support for NOR flash devices. (by Ladislav Michl)
* Added support for configuring the number of boot attempts for U-Boot. (by
  Daniel Mack)
* Implemented passing the image size to hooks as ``RAUC_IMAGE_SIZE``. (by Marcel
  Hellwig)
* Added support to use ``systemd.verity_root_data=`` to find the booted slot.
  (by Arnaud Rebillout)
* Implemented passing additional information to hooks for the ``boot-*`` slot types.
  (by Bastian Krause)
* Added support for extracting and replacing the bundle signature, which is
  useful for scenarios with strict limitations on how HSMs can be used. (by
  Jean-Pierre Geslin)
* Implemented a ``rauc mount`` command to allow inspection of bundles without
  extraction.
* Allowed omitting the image filename when using the ``install`` slot hook.
* Implemented support for extracting tar archives to jffs2 slots. (by Holger Assmann)
* Added option for the ``resign`` and ``info`` commands to ignore expired
  certificates (``--no-check-time``). (by Michael Heimpold)
* Added option for the ``convert`` command to disable the concurrent access
  checks for plain bundles (``--trust-environment``).
* Simplified usage of compressed SquashFS images with extensions as created by
  OpenEmbedded. (by Omer Akram)
* Improved checks of the manifest contents to avoid common misconfigurations.
* Improved handling of ``system.conf`` loading according to the use-cases of
  the different commands.

.. rubric:: Bug fixes

* Fixed installing plain bundles from ZFS partitions. (by Daniel Mack)
* Fixed the order of pre-/post-install hooks for the ``boot-*`` slot types. (by Bastian Krause)
* Fixed generation of VFAT filesystem labels which were rejected by newer
  ``mkfs.vfat``.
* Added checking of slot types configured in ``system.conf``.
* Fixed installing plain bundles from ramfs. (by Ian Abbott)
* Fixed curl download size limit handling. (by Christoph Steiger)
* Fixed missing file descriptor closing in some error cases. (by Christian Hitz)
* Fixed an issue with slot boot status determination that could accidentally
  detect 'good' slots as 'bad'.
* Fixed inconsistent slot status reporting via the D-Bus API.

.. rubric:: Testing

* Updated kernel used for qemu testing.
* Introduced an interactive mode for qemu-test.
* Moved testing container building to GitHub Actions.
* Updated testing container to Debian bullseye. (by Ludovico de Nitti)
* Added a scan-build workflow.

.. rubric:: Code

* Removed some code left over after the removal of the deprecated file support.
* Refactored bundle opening as preparation for HTTP streaming.
* Added infrastructure for HTTP streaming tests.
* Completed D-Bus interface definitions. (by Taras Zaporozhets)

.. rubric:: Documentation

* Improved documentation of the ``boot-mbr/gpt-switch`` slot types.
* Fixed and improved documentation and comments in several places. (by Alexander
  Dahl)
* Documented a common approach to handle UBIFS device names via udev.
* Added a FAQ entry covering the use of dm-crypt partitions. (by Fabian
  Büttner)

Contributions from: Ahmad Fatoum, Alexander Dahl, Arnaud Rebillout, Bastian
Krause, Christian Hitz, Christoph Steiger, Daniel Mack, Enrico Jörns, Fabian
Büttner, Holger Assmann, Ian Abbott, Jan Lübbe, Jean-Pierre Geslin, Ladislav
Michl, Livio Bieri, Ludovico de Nittis, Marcel Hellwig, Michael Heimpold,
Michael Tretter, Omer Akram, Pascal Huerst, Richard Forro, Roland Hieber,
Rouven Czerwinski, Sijmen Huizenga, Taras Zaporozhets, Vivien Didelot,
Vyacheslav Yurkov

Release 1.5.1 (released Jan 22, 2021)
-------------------------------------

.. rubric:: Bug fixes

* Fix building with kernel headers < 4.14. (by Fabrice Fontaine)
* Fix manifest generation for casync bundles.
* Fix too strict payload size check which triggered on casync bundles generated
  by versions up to 1.4.
* Restore compatibility with glib 2.50.

.. rubric:: Testing

* Switch from Travis-CI to GitHub actions.
* Add test builds on Ubuntu 16.04, 18.04 and 20.04 to catch build problems with
  older environments.

Contributions from: Enrico Jörns, Fabrice Fontaine, Jan Lübbe

Release 1.5 (released Dec 14, 2020)
-----------------------------------

.. note::

  This version introduces the new ``verity`` bundle format (the old format is
  now called ``plain``).
  The ``verity`` format was added to prepare for future use cases (such as
  network streaming and encryption), for better parallelization of installation
  with hash verification and to detect modification of the bundle during
  installation (CVE-2020-25860).
  The bundle format is detected when reading a bundle and checked against the set
  of allowed formats configured in the system.conf (see :ref:`sec_ref_formats`).

  As the old ``plain`` format does not offer protection against modification
  during the installation process, RAUC now takes ownership of the bundle file,
  removes write permissions and checks for existing open file descriptors.
  This is intended as a mitigation to protect against a compromised update
  service running as a non-root user, which would otherwise be able to modify
  the bundle between signature check and actual bundle installation.

  See :ref:`sec_int_migration` for more details on how to switch to the
  ``verity`` format.

.. rubric:: Enhancements

* Add support for the ``verity`` bundle format. See the :ref:`reference for
  details <sec_ref_format_verity>`.
* Support resolving the `root=PARTLABEL=xxx` kernel command line option. (by
  Gaël PORTAY)
* Disable the unnecessary SMIMECapabilities information in the bundle
  signature, saving ~100 bytes.
* Remove redundant checksum verification for source images during installation.
  The RAUC bundle is already verified at this point, so there is no need to
  verify the checksum of each file individually. (by Bastian Krause)

.. rubric:: Security

* Take ownership of bundle files if they are not owned by root and remove write
  permissions. Then check that no writable file descriptors are open for the
  bundle file (using the ``F_SETLEASE`` fcntl). This fixes CVE-2020-25860. See
  the advisory for more details:
  https://github.com/rauc/rauc/security/advisories/GHSA-cgf3-h62j-w9vv

.. note::

  The https://github.com/rauc/rauc-1.5-integration repository contains examples
  to simplify integrating the RAUC update into existing projects.
  You can subscribe to https://github.com/rauc/rauc-1.5-integration/issues/1 to
  receive notifications of important updates to this repository and of
  integration into the upstream build systems.

.. rubric:: Bug fixes

* Fix install handler selection for *.img files for boot-* slots when used with
  casync. (by Martin Schwan)
* Fix checking for unknown keys in the slot configuration.
* Fix some corner cases related to stopping the D-Bus daemon.
* Propagate error if unable to save manifest. (by Stefan Wahren)
* Apply `--handler-args` only during installation (and not during bundle
  creation).

.. rubric:: Testing

* Ship `test/minimal-test.conf` to fix testing when running as root. (by Uwe
  Kleine-König)
* Increase usage of g_autofree/g_autoptr in the test suite.

.. rubric:: Code

* Remove unused code for signed manifests (outside of a bundle).
* Add G_GNUC_WARN_UNUSED_RESULT to many functions.

.. rubric:: Documentation

* Fix multiple smaller errors. (by Christoph Steiger, Christopher Obbard and
  Michael Heimpold)
* Improve documentation related to u-boot scripting and environment storage.

Contributions from: Bastian Krause, Christoph Steiger, Christopher Obbard,
Enrico Jörns, Gaël PORTAY, Jan Lübbe, Martin Schwan, Michael Heimpold, Stefan
Wahren, Uwe Kleine-König

Release 1.4 (released Jul 20, 2020)
-----------------------------------

.. note::

  Slots with both a ``parent=`` and a ``bootname=`` entry are now rejected when
  parsing the system configuration.
  While the intention was to have either a bootname or a parent link, this was
  not enforced in previous versions.
  Move the bootname to the parent slot when updating to RAUC 1.4.

  It is now recommended to explicitly select either per-slot or global
  configuration file in the system config using ``statusfile=<path>/per-slot``.
  If a central storage location is available, global status file should be
  preferred.

.. rubric:: Enhancements

* Added support for custom boot selection scripts/binaries.
  This allows handling special cases where none of the standard bootloaders
  is available for switching the redundant slots. (by Christian Bräuner
  Sørensen, :ref:`docs <sec-custom-bootloader-backend>` by Andreas Schmidt)
* Changed ext4 filesystem creation options to always use 256 byte inodes.
  Without it, mkfs.ext4 will default to 128 byte inodes on filesystems smaller
  than 512MiB.
  This avoids the "ext4 filesystem being mounted at /foo supports timestamps
  until 2038" message on newer kernels.
* Added new slot type ``boot-gpt-switch`` to support atomic updating of boot
  partitions in the GPT.
  This is useful if the firmware does not support atomic bootloader updates by
  itself.
  See :ref:`here <sec-gpt-partition>` for details.

.. rubric:: Bug fixes

* Improve parent and bootname consistency checks when loading the system
  config. (by Dan Callaghan)
* Fix and improve installation log output for the --disable-service
  configuration.
* Clean up incomplete bundles on creation errors consistently for extract/resign/convert
  and doesn't remove pre-existing files anymore.
* Fix minor memory leaks.

.. rubric:: Testing

* Added tests for UBIFS and NAND slot types via nandsim in qemu.
* Added CI testing of the --disable-service configure option.
* Added test cases for some CLI subcommands.

.. rubric:: Code

* Clarified licensing of the D-Bus API file. (by Michael Heimpold)

.. rubric:: Documentation

* Manual pages have been updated with new options. (by Michael Heimpold)
* Improved documentation around central and per-slot status files.
* Improved images and various text sections.

Contributions from: Andreas Schmidt, Bastian Krause, Christian Bräuner
Sørensen, Dan Callaghan, Enrico Jörns, Jan Lübbe, Michael Heimpold, Tobias
Junghans, Uwe Kleine-König

Release 1.3 (released Apr 23, 2020)
-----------------------------------

.. rubric:: Enhancements

* Added a new D-Bus method (InstallBundle) which supports optional parameters
  ("ignore-compatible" for now).
* Added support for X.509 key usage attributes (code signing and others).
* Added a ``check-crl`` configuration option to require Certificate Revocation
  List (CRL) checking during installation.
  If the keyring already contains a CRL, but checking is not enabled, a warning
  will be printed.
* Support updating of already mounted slots via a custom install hook when
  enabled with "allow-mounted=true" in the system configuration.
  This can be useful for updating bootloaders in a boot partition (for example
  on the Raspberry Pi or BeagleBone). (by Martin Hundebøll and Rasmus Villemoes)
* Added the ``--mksquashfs-args`` option for bundle creation. This can be used to
  configure the details of the squashfs compression. (by Louis des Landes)
* Added the ``--casync-args`` option for the ``rauc convert`` command. This can
  be used to configure the details of the casync conversion. (by Christopher
  Obbard)
* Added support for installing UBIFS images via casync (depends on the casync PR
  https://github.com/systemd/casync/pull/227). (by Ulrich Ölmann)
* Enabled usage of ``--no-verify`` with ``rauc resign``.
  This can be useful for resigning of bundles signed with expired certificates.
* Exposed the ``RAUC_BUNDLE_MOUNT_POINT`` environment variable to hook scripts.
  This also deprecates the old name ``RAUC_UPDATE_SOURCE`` for this value in
  handler scripts. (by Rasmus Villemoes)
* Reduced size of the installed ``rauc`` binary. This was done by using
  ``--gc-sections`` and adding a configure switch to disable the ``bundle``,
  ``resign`` and ``convert`` commands. (by Rasmus Villemoes)
* Added support for explicitly telling RAUC that all slots are inactive on the
  kernel command line (``rauc.external``).
  This is useful for using RAUC in a factory installer. (by Marco Felsch)
* Improved layout of the ``rauc status`` output.

.. rubric:: Bug fixes

* Fixed SD/eMMC detection when using /dev/disk/by-path/ symlinks. (by Marco Felsch)
* Fixed handling of HTTP Content-Encoding: gzip. (by Jan Kundrát)
* Fixed reporting of errors during bundle verification. This solves a
  ``rauc-ERROR **: Not enough substeps: check_bundle`` abort. (by Rouven
  Czerwinski)
* Fixed handling of surrounding whitespace in the system variant by removing
  it. A warning is printed in this case.
* Fixed the RAUC D-Bus interface introspection file name to be consistent with
  the interface name. (by Michael Tretter)

.. rubric:: Testing

* Switched testing environment from user-mode-linux (UML) to QEMU. This allows
  us to use our own kernel configuration and avoids the (unusual) dependency.
* Re-enabled support for coverity, as they have added support for GCC 8.
* Added some more tests in several areas.

.. rubric:: Code

* Removed support for OpenSSL versions < 1.1.1.
  OpenSSL versions 1.0.2 and 1.1.0 are no longer supported by the OpenSSL
  project: https://www.openssl.org/policies/releasestrat.html
* Improved support for large bundles on 32 bit systems, but some work remains
  to be done.
* Disabled automatic ``-Werror`` and ``-O0`` when building from a git
  repository.
  This caused confusion in several cases.
* Updated uncrustify and enabled some additional formatting rules.
* Reduced redundant prefixes in error messages.
* Removed unused verification functions left over from the old network mode.
* Removed minor memory leaks.

.. rubric:: Documentation

* Clarified documentation about hooks and handlers (and the available
  environment variables).
* Fixed minor typos and inconsistencies.

Contributions from: Arnaud Rebillout, Christopher Obbard, Enrico Jörns, Jan
Kundrát, Jan Lübbe, Louis des Landes, Marco Felsch, Martin Hundebøll, Michael
Heimpold, Michael Tretter, Rasmus Villemoes, Rouven Czerwinski, Trent Piepho,
Ulrich Ölmann

Release 1.2 (released Oct 27, 2019)
-----------------------------------

.. rubric:: Enhancements

* Added ``--signing-keyring`` argument to specify a distinct keyring for
  post-signing verification. This allows for example to use ``rauc resign``
  with certs not verifying against the original keyring.
* Output of 'rauc status' is now grouped by slot groups to make it easier to
  identify the redundancy setup.
  Previously, the present slots were printed in a random order which was
  confusing, especially when having more than three or four slots.
* Use pkg-config to obtain valid D-Bus install directories and clean up D-Bus
  directory handling.
  This adds libdbus-1-dev as new build dependency. (by Michael Heimpold)
* Moved various checks that could be performed before actually starting the
  installation out of the atomic update region.
  This allows RAUC to fail earlier without leaving behind a disabled slot group
  with incomplete contents.
* Added optional ``--progress`` argument to ``rauc install`` that enables a
  basic text progress bar instead of the default line-by-line log.
* Added ``tmppath`` to casync system config options to allow setting TMPDIR for
  casync. (by Gaël PORTAY)
* Slot skipping was deactivated by default as it turned out to be unexpected
  behaviour for many users.
  The corresponding setting was renamed to 'install-same='
  ('force-install-same' will remain valid, too).
  The means skipping writing for slots whose current and intended slot hashes
  are equal must now be enabled explicitly.
  This optimization is mainly useful for use-cases with a read-only rootfs.
* Added new slot type ``boot-mbr-switch`` to support atomic updating of boot
  partitions in the MBR. (by Thomas Hämmerle)
  See :ref:`here <sec-mbr-partition>` for details.

.. rubric:: Bug fixes

* Fixed detection of whether the bundle path is located in input directory for a
  corner case.
* Fixed off-by-one error in printing the remaining attempts counter in the
  uboot.sh contrib script (by Ellie Reeves)
* Fixed detection of mount points disappearing during the service's runtime.
* Added missing entry of 'service' subcommand to RAUC help text (if compiled
  with service support).
* Fixed inappropriate resetting of BOOT_ACK flag in eMMC extCSD register
  handling which could have prevented proper booting on some SoCs. (by Stephan
  Michaelsen)
* Fixed leaking GDataInputStreams in boot selection and install handling that
  led to steadily increasing number of open file descriptors in some scenarios
  until exceeding system limits and leading to 'Too many open files' errors.
  This was only problematic when installing many times without rebooting.
* Fixed 'uninitialized local' bugs in update_handler and config_file module.
  (by Gaël PORTAY)
* PKCS#11 handling now does not silently accept missing (empty) PINs anymore,
  but allows interactive prompt for entering it.
* Fixed bundle detection on big endian systems.
* Fixed size mismatches in printf formatter and struct packing on ARM32.

.. rubric:: Testing

* Fix checks that depended on implicit assumptions regarding the GHashTable
  behaviour that are not valid anymore for newer glib versions.
* Added notes on required tools for unit testing and added check for
  grub-editenv being present.
* Travis now also runs cross-compilation tests for platforms armhf, i386,
  arm64, armel to allow early detection of cross-compilation issues with
  endianness, 32 vs. 64 bit, etc.

.. rubric:: Code

* Reworked subprocess call logging for debugging and added remaining missing
  log output to users of r_subprocess_new().
* Refactored slot handling code in new 'slot.c' module to be used for both
  install and status information handling.
* Added qdbusxml2cpp annotations to rauc-installer.xml for interface class
  generation. (by Tobias Junghans)
* Removed the deprecated 'network mode'.
  Note that this does not affect RAUC's bundle network capabilities (casync,
  etc.).
* Fixed clang compilation warnings (unused variable, printf formatter,
  non-obvious invert statements).
* Various code cleanups, structural simplifications

.. rubric:: Documentation

* Added hints for creating ``/dev/data`` symlink to mount the right data
  partition in dual data partition setups. (by Fabian Knapp)
* Extended manpage to cover 'rauc status' subcommands. (by Michael Heimpold)
* Fixed various typos.

Contributions from: Bastian Krause, Ellie Reeves, Enrico Jörns, Fabian Knapp,
Gaël PORTAY, Jan Lübbe, Leif Middelschulte, Michael Heimpold , Stephan
Michaelsen , Thomas Hämmerle, Thorsten Scherer, Tobias Junghans, Uwe
Kleine-König

Release 1.1 (released Jun 5, 2019)
----------------------------------

.. rubric:: Enhancements

* Check that we do not generate a bundle inside a source directory
* Added full GRUB2 support, including status and primary slot readback (by
  Vitaly Ogoltsov and Beralt Meppelink)
* Allow passing a slot's name via commandline instead of it's bootname
* Show each slot's name in ``Booted from`` line of ``rauc status`` to simplify
  identification
* Add ``resize`` option for ext4 slots to let RAUC run resize2fs on an ext4
  slot after copying the image.
* Allow dumping the signer certificate (``--dump-cert``) without verification
* Allow specifying a keyring directory with multiple files to support
  non-conflicting installations of certificates from different packages (by
  Evan Edstrom)
* Add a bootloader option ``efi-use-bootnext`` (only valid when bootloader is
  'efi') to disable usage of BootNext for marking slots primary.
* Support setting a system variant in the ``system-info`` handler via
  ``RAUC_SYSTEM_VARIANT``
* D-Bus "mountpoint" property now also exports external mount point
* Made slot state, compatible and variant available as environment variables
  for slot hooks
* Made system variant variable available as an environment variable for bundle
  hooks

.. rubric:: Bug fixes

* Fix memory leaks in D-Bus notification callbacks (by Michael Heimpold)
* Fix memory leaks in resolve_bundle_path (by Michael Heimpold)
* Do not print misleading status dump when calling ``mark-*`` subcommands
* Avoid mmap'ing potentially huge files (by Rasmus Villemoes)
* Fix and cleanup checksum verification and handling (by Rasmus Villemoes)
* Avoid assertion error caused by unconditional slot status hash table freeing
* Make a-month-from-now validity check in signature verification more robust
  (by Rasmus Villemoes)

.. rubric:: Testing

* Enable lgtm analysis for tests
* Restructure signature tests with set_up and tear_down (by Evan Edstrom)
* Move from gcc-6 to gcc-7
* Build environment fixes and workarounds

.. rubric:: Code

* A failure in calling barebox_state bootchooser implementation should be
  propagated
* Update to latest ``git-version-gen`` upstream version
* Tail-call real rauc suprocess in ``rauc-service.sh`` (by Angus Lees)
* Consistently return newly-allocated objects in ``resolve_path()``
* Enforce space between ``if`` and ``(`` via uncrustify

.. rubric:: Documentation

* Added an initial version of a man page (by Michael Heimpold)
* Extended D-Bus API documentation
* Improve description of how RAUC detects the booted slot
* Added lgtm badge
* Add hints on library dependencies
* Clarifications on how to build and install RAUC
* Add note on basic RAUC buildroot support
* Clarification on usage of RAUC on host and target side
* Clarified documentation of 'use-bundle-signing-time' option (by Michael Heimpold)
* Typos fixed

Contributions from: Angus Lees, Arnaud Rebillout, Beralt Meppelink, Enrico
Jörns, Evan Edstrom, Ian Abbott, Jan Lübbe, Michael Heimpold, Rasmus Villemoes,
Ulrich Ölmann, Vitaly Ogoltsov

Release 1.0 (released Dec 20, 2018)
-----------------------------------

.. rubric:: Enhancements

* Support OpenSSL 1.1
* Use OPENSSL_config() instead of OPENSSL_no_config()
* Handle curl_global_init() return code

.. rubric:: Bug fixes

* Fix error handling when resolving the backing file for a loop device
* Fix error reporting when no primary slot is found with u-boot (by Matthias Bolte)
* Fix memory leaks when parsing handler output
* Fix compiler error when building with --disable-network
* Handle fatal errors during curl or openssl initialization
* Fix boot selection handling for asymmetric update setups
* Fix default variant string in case of failure when obtaining
* Fix return codes when giving excess arguments to CLI functions
* Let 'rauc service' return exit code != 0 in case of failure
* Print 'rauc service' user error output with g_printerr()
* Fix showing primary slot (obtained via D-Bus) in 'rauc status'
* Fix showing inverted boot-status (obtained via D-Bus) in 'rauc status'
* Minor output and error handling fixes and enhancements

.. rubric:: Testing

* Fake entropy in uml tests to fix and speed up testing
* Fix creating and submitting coverity report data
* Migrate to using Docker images for testing
* Changed coverage service from coveralls to codecov.io
* Switch to uncrustify 0.68.1

.. rubric:: Documentation

* Provided slot configuration :ref:`examples <sec-example-slot-configs>` for
  common scenarios
* Fixes and enhancements of README.rst to match current state
* Add sphinx DTS lexer for fixing and improving dts example code parsing

Contributions from: Ahmad Fatoum, Enrico Jörns, Jan Lübbe, Matthias Bolte

Release 1.0-rc1 (released Oct 12, 2018)
---------------------------------------

.. rubric:: Enhancements

* Bundle creation

  * Add support for passing Keys/Certificates stored on PKCS#11 tokens (e.g. for using a smart card or HSM).
    See :ref:`pkcs11-support` for details.
  * Print a warning during signing if a certificate in the chain will expire within one month
  * If keyring is given during bundle creation, automatically verify bundle signature and trust chain

* Configuration
  (see the reference for the :ref:`[system] <system-section>`, :ref:`[keyring] <keyring-section>` and :ref:`[slot.*.*] <slot.slot-class.idx-section>` sections for details)

  * Add ``extra-mount-opts`` argument to slot config to allow passing custom options
    to ``mount`` calls (such as user_xattr or seclabel)
  * Implement support for ``readonly`` slots that are part of the slot description but
    should never be written by RAUC
  * Add option ``use-bundle-signing-time`` to use signing time for verification instead
    of the current time
  * Introduce ``max-bundle-download-size`` config setting (by Michael Heimpold)
  * Rename confusing ``ignore-checksum`` flag to ``force-install-same`` (old remains
    valid of course) (by Jan Remmet)
  * Add strict parsing of config files as we do for manifests already.
    This will reject configs with invalid keys, groups, etc. to prevent unintentional behavior

* Installation

  * Remove strict requirement of using ``.raucb`` file extension, although it is still recommended
  * Export RAUC slot type to handlers and hooks (by Rasmus Villemoes)
  * Add ``*.squashfs`` to ``raw`` slot handling (by Emmanuel Roullit)
  * Add checking of RAUC bundle identifier (squashfs identifier)
  * ``*.img`` files can now be installed to ``ext4``, ``ubifs`` or ``vfat`` slots (by Michael Heimpold)
  * Warn if downloaded bundle could not be deleted

* Expose system information (variant, compatible, booted slot) over D-Bus (by Jan Remmet)
* The ``rauc status`` command line call now only uses the D-Bus API (when enabled) to obtain
  status information instead of loading configuration and performing operations itself.
  This finalizes the clear separations between client and service and also allows calling
  the command line client without requiring any configuration.
* Add debug log domain ``rauc-subprocess`` for printing RAUC subprocess invocations.
  This can be activated by setting the environment variable ``G_MESSAGES_DEBUG=rauc-subprocess``.
  See :ref:`debugging` for details.
* Enhancement of many debug and error messages to be more precise and helpful
* Let U-Boot boot selection handler remove slot from ``BOOT_ORDER`` when marking it bad
* Implemented obtaining state and primary information for U-Boot boot selection interface (by Timothy Lee)
* Also show certificate validity times when the certificate chain is displayed
* Added a simple CGI as an example on how to code against the D-Bus API in RAUC contrib/ folder. (by Bastian Stender)

.. rubric:: Bug fixes

* Bootchooser EFI handler error messages and segfault fixed (by Arnaud Rebillout)
* Fix preserving of primary errors while printing follow-up errors in update_handlers (by Rasmus Villemoes)
* Make not finding (all) appropriate target slots a fatal error again
* Prevent non-installation operations from touching the installation progress information (by Bastian Stender)
* Call ``fsync()`` when writing raw images to assure content is fully written to disk before exiting (by Jim Brennan)
* Fix casync store initialization for extraction without seeds (by Arnaud Rebillout)
* Fix slot status path generation for external mounts (by Vyacheslav Yurkov)
* Do not try to mount already mounted slots when loading slot status information from per-slot file
* Fix invalid return value in case of failed ``mark_active()``
* Fix bootname detection for missing ``root=`` command line parameter
* Fix passing intermediate certificates via command line which got broken by a faulty input check (by Marcel Hamer)
* Preserve original uid/gid during extraction to be independent of the running system.
  This was only problematic if the name to ID mapping changed with an update.
  Note that this requires to enable ``CONFIG_FEATURE_TAR_LONG_OPTIONS`` when using busybox tar.
* Block device paths are now opened with ``O_EXCL`` to ensure exclusive access
* Fix handling for ``file://`` URIs
* Build-fix workaround for ancient (< 3.4) kernels (by Yann E. MORIN)
* Various internal error handling fixes (by Ulrich Ölmann, Bastian Stender)
* Several memory leak fixes

.. rubric:: Testing

* Abort on ``g_critical()`` to detect issues early
* Extended and restructured testing for barebox and u-boot boot selection handling
* Basic ``rauc convert`` (casync) testing
* Switch to Travis xenial environment
* Make diffs created by uncrustify fatal to enforce coding style
* Fix hanging rauc.t in case of failed tests for fixing sharness cleanup function handling
* Run sharness (rauc.t) tests with verbose output
* Show make-check log on error

.. rubric:: Code

* Add GError handling to download functions
* Prepare support for tracing log level
* Start more detailed annotation of function parameter direction and transfer
* Simplified return handling as result of cleanup helper rework
* Treewide introduction of Glib automatic cleanup helpers. Increases minimum required GLib version to 2.45.8 (by Philipp Zabel)
* Prepare deprecation of RAUC ancient non-bundle 'network mode'

.. rubric:: Documentation

* Add a :ref:`debugging` chapter on how to debug RAUC
* Add a :ref:`bootloader-interaction` section describing the boot selection layer and the special handling for the supported bootloaders
* Add hint on how to run RAUC without D-Bus to FAQ
* Document :ref:`sec_ref_host_tools` and :ref:`sec_ref_target_tools`
* Tons of typo fixes, minor enhancements, clarifications, example fixes, etc.

Contributions from: Alexander Dahl, Arnaud Rebillout, Bastian Stender, Emmanuel Roullit, Enrico Jörns, Jan Lübbe, Jan Remmet, Jim Brennan, Marcel Hamer, Michael Heimpold, Philip Downer, Philipp Zabel, Rasmus Villemoes, Thomas Petazzoni, Timothy Lee, Ulrich Ölmann, Vyacheslav Yurkov, Yann E. MORIN

Release 0.4 (released Apr 9, 2018)
----------------------------------

.. rubric:: Enhancements

* Add ``barebox-statename`` key to ``[system]`` section of system.conf in order
  to allow using non-default names for barebox state
* Support atomic bootloader updates for eMMCs.
  The newly introduced slot type ``boot-emmc`` will tell RAUC to handle
  bootloader updates on eMMC by using the ``mmcblkXboot0/-boot1`` partitions
  and the EXT_CSD registers for alternating updates.
* Support writing ``*.vfat`` images to vfat slots
* Add basic support for streaming bundles using casync tool.
  Using the casync tool allows streaming bundle updates chunk-wise over
  http/https/sftp etc.
  By using the source slot as a seed for the reproducible casync chunking
  algorithm, the actual chunks to download get reduced to only those that
  differ from the original system.

  * Add ``rauc convert`` command to convert conventional bundles to casync
    bundle and chunk store
  * Extend update handler to handle ``.caibx`` and ``.caidx`` suffix image types in
    bundle
* Added ``--detailed`` argument to ``rauc status`` to obtain newly added slot
  status information
* Added D-Bus Methods ``GetSlotStatus`` to obtain collected status of all slots
* Extended information stored in slot status files (installed bundle info,
  installation and activation timestamps and counters)
* Optionally use a central status file located in a storage location not
  touched during RAUC updates instead of per-slot files (enabled by setting
  ``statusfile`` key in ``[system]`` section of ``system.conf``).
* Add ``write-slot`` command to write images directly to defined slots (for use
  during development)

.. rubric:: Bug fixes

* Fix documentation out-of-tree builds
* Fixed packaging for dbus wrapper script rauc-service.sh
* Some double-free and error handling fixes

.. rubric:: Testing

* Create uncrustify report during Travis run

.. rubric:: Code

* Unified hash table iteration and variable usage
* Add uncrustify code style configuration checker script to gain consistent
  coding style. Committed changes revealed by initial run.

.. rubric:: Documentation

* Updated and extended D-Bus interface documentation
* Added documentation for newly added features (casync, central slot status,
  etc.)
* Fixed and extended Yocto (meta-rauc) integration documentation
* Add link to IRC/Matrix channel
* Some minor spelling errors fixed

Release 0.3 (released Feb 1, 2018)
----------------------------------

.. rubric:: Enhancements

* Added support for intermediate certificates, improved bundle resigning and
  certificate information for hooks.
  This makes it easier to use a multi-level PKI with separate intermediate
  certificates for development and releases.
  See :ref:`sec-resign` for details.
* Added support for image variants, which allow creating a single bundle which
  supports multiple hardware variants by selecting the matching image from a
  set contained in the bundle.
  See :ref:`sec-variants` for details.
* Added support for redundant booting by using EFI boot entries directly.
  See :ref:`sec-efi` for details.
* Added boot information to ``rauc status``
* Added ``rauc extract`` command to extract bundles
* Support detection of the booted slot by using the ``UUID=`` and ``PARTUUID=``
  kernel options.
* Improved the status and error output
* Improved internal error cause propagation

.. rubric:: Bug fixes

* Fixed boot slot detection for ``root=<symlink>`` boot parameters (such as
  ``root=/dev/disk/by-path/pci-0000:00:17.0-ata-1-part1``)
* Removed redundant image checksum verification during installation.

.. rubric:: Testing

* Improve robustness and test coverage
* Use gcc-7 for testing

.. rubric:: Documentation

* Added documentation for

  - intermediate certificates
  - re-signing bundles
  - image variants
  - UEFI support

* Minor fixes and clarifications

Release 0.2 (released Nov 7, 2017)
----------------------------------

.. rubric:: Enhancements

* Added ``--override-boot-slot`` argument to force booted slot
* Display installation progress and error cause in CLI
* Allow installing uncompressed tar balls
* Error reporting for network handling and fail on HTTP errors
* Added ``--keyring`` command line argument
* Added ``activate-installed`` key and handling for ``system.conf`` that allows
  installing updates without immediately switching boot partitions.
* Extended ``rauc status mark-{good,bad}`` with an optional slot identifier
  argument
* Added subcommand ``rauc status mark-active`` to explicitly activate slots
* New D-Bus method ``mark`` introduced that allows slot activation via D-Bus
* Added ``tar`` archive update handler for ``vfat`` slots
* Introduced ``rauc resign`` command that allows to exchange RAUC signature
  without modifying bundle content
* Display signature verification trust chain in output of ``rauc info``.
  Also generate and display SPKI hash for each certificate
* Added ``--dump-cert`` argument to ``rauc info`` to allow displaying signer
  certificate info

.. rubric:: Documentation

* Added docs/, CHANGES and README to tarball
* Added and reworked a bunch of documentation chapters
* Help text for ``rauc bundle`` fixed
* Added short summary for command help

.. rubric:: Bug fixes

* Flush D-Bus interface to not drop property updates
* Set proper PATH when starting service on non-systemd systems
* Include config.h on top of each file to fix largefile support and more
* Let CLI properly fail on excess arguments provided
* Do not disable bundle checking for ``rauc info --no-verify``
* Properly clean up mount points after failures
* Abort on inconsistent slot parent configuration
* Misc memory leak fixes
* Fixes in error handling and debug printout
* Some code cleanups

.. rubric:: Testing

* Miscellaneous cleanups, fixes and refactoring
* Add tests for installation via D-Bus
* Let Travis build documentation with treating warnings as errors
* Allow skipping sharness tests requiring service enabled
* Explicitly install dbus-x11 package to fix Travis builds
* Fix coveralls builds by using ``--upgrade`` during
  ``pip install cpp-coveralls``
* Use gcc-6 for testing

Release 0.1.1 (released May 11, 2017)
-------------------------------------

.. rubric:: Enhancements

* systemd service: allow systemd to manage and cleanup RAUCs mount directory

.. rubric:: Documentation

* Added contribution guideline
* Added CHANGES file
* Converted README.md to README.rst
* Added RAUC logo
* Several typos fixed
* Updated documentation for mainline PTXdist recipes

.. rubric:: Bug fixes

* Fix signature verification with OpenSSL 1.1.x by adding missing binary flag
* Fix typo in json status output formatter ("mountpint" -> "mountpoint")
* Fixed packaging of systemd service files by removing generated service files
  from distribution
* src/context: initialize datainstream to NULL
* Added missing git-version-gen script to automake distribution which made
  autoreconf runs on release packages fail
* Fixed D-Bus activation of RAUC service for non-systemd systems

Release 0.1 (released Feb 24, 2017)
-----------------------------------

This is the initial release of RAUC.