SUSE-RU-2020:0593-1: moderate: Recommended update for umoci

sle-updates at sle-updates at
Thu Mar 5 10:25:53 MST 2020

   SUSE Recommended Update: Recommended update for umoci

Announcement ID:    SUSE-RU-2020:0593-1
Rating:             moderate
References:         #1165161 
Affected Products:
                    SUSE Linux Enterprise Module for Containers 15-SP1

   An update that has one recommended fix can now be installed.


   This update for umoci fixes the following issues:

   Update to umoci v0.4.4:

   * Added full-stack verification of blob hashes and descriptors for all
     operations (improving our hardening against bad images).
   * For details, see in the package.

   Update to umoci v0.4.3:

   * Added --no-history to all commands with --history.* flags. Should only
     be used for umoci-config(1).
   * Added `umoci insert --tag` to allow non-destructive modifications.
   * For details, see packaged /usr/share/doc/packages/umoci/

   Update to umoci v0.4.2:

   * umoci now has an exposed Go API
   * Added `umoci unpack --keep-dirlinks`
   * `umoci insert` now supports whiteouts two ways.
   * For details, see in the package.

   Update to umoci v0.4.1.

   * Support more tags (the valid set of characters in tags has expanded).
   * Add 'umoci insert' and 'umoci raw unpack'.
   * 'umoci unpack' correctly handles out-of-order whiteouts now.
   * 'umoci unpack' and 'umoci repack' make sure of a more optimised gzip
     implementation now -- in some benchmarks 'umoci repack' can have a
     of up to 3x.
   * For details, see in the package.

   Update to umoci v0.4.0:

   + `umoci repack` now supports `--refresh-bundle` which will update the OCI
     bundle's metadata (mtree and umoci-specific manifests) after packing the
     image tag. This means that the bundle can be used as a base layer for
     future diffs without needing to unpack the image again.
   + Added a website, and reworked the documentation to be better structured.
     You can visit the website at [``][]. openSUSE/umoci#188
   + Added support for the `user.rootlesscontainers` specification, which
     allows for persistent on-disk emulation of `chown(2)` inside rootless
     containers. This implementation is interoperable with [@AkihiroSuda's
     `PRoot` fork][as-proot-fork] (though we do not test its interoperability
     at the moment) as both tools use [the same protobuf
     specification][rootlesscontainers-proto]. openSUSE/umoci#227
   + `umoci unpack` now has support for opaque whiteouts (whiteouts which
     remove all children of a directory in the lower layer), though `umoci
     repack` does not currently have support for generating them. While this
     is technically a spec requirement, through testing we've never
     encountered an actual user of these whiteouts. openSUSE/umoci#224
   + `umoci unpack` will now use some rootless tricks inside user namespaces
     for operations that are known to fail (such as `mknod(2)`) while other
     operations will be carried out as normal (such as `lchown(2)`). It
      should be noted that the `/proc/self/uid_map` checking we do can be
      tricked into not detecting user namespaces, but you would need to be
      trying to break it on purpose. openSUSE/umoci#171 openSUSE/umoci#230
   * Fix a bug in our "parent directory restore" code, which is responsible
     for ensuring that the mtime and other similar properties of a directory
     are not modified by extraction inside said directory. The bug would
     manifest as xattrs not being restored properly in certain edge-cases
     (which we incidentally hit in a test-case). openSUSE/umoci#161
   * `umoci unpack` will now "clean up" the bundle generated if an error
     occurs during unpacking. Previously this didn't happen, which made
      cleaning up the responsibility of the caller (which was quite difficult
      if you were unprivileged). This is a breaking change, but is in the
      error path so it's not critical. openSUSE/umoci#174 openSUSE/umoci#187
   * `umoci gc` now will no longer remove unknown files and directories that
     aren't `flock(2)`ed, thus ensuring that any possible OCI image-spec
     extensions or other users of an image being operated on will no longer
     break. openSUSE/umoci#198
   * `umoci unpack --rootless` will now correctly handle regular file
     unpacking when overwriting a file that `umoci` doesn't have write access
     to. In addition, the semantics of pre-existing hardlinks to a clobbered
     file are clarified (the hard-links will not refer to the new layer's
     inode). openSUSE/umoci#222 openSUSE/umoci#223 [as-proot-fork]: [rootlesscontainers-proto]: []:

Patch Instructions:

   To install this SUSE Recommended Update use the SUSE recommended installation methods
   like YaST online_update or "zypper patch".

   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Containers 15-SP1:

      zypper in -t patch SUSE-SLE-Module-Containers-15-SP1-2020-593=1

Package List:

   - SUSE Linux Enterprise Module for Containers 15-SP1 (aarch64 ppc64le s390x x86_64):



More information about the sle-updates mailing list