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Go modules · #1821 by repository stars
Last release 6 months ago
15 Mar 2026
Release timing varies
gaps range from 8 days to 3 months
Nearly every release is documented
notes for 14 of 14 stable releases
Nothing withdrawn
no release was ever pulled
10 years old
905 releases · first in 2016
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…difficult if you were unprivileged). This is a breaking change, but is in the error path so it's not critical. opencontainers/umoci#174 opencontainers…
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. opencontainers/umoci#196umo.ci. opencontainers/umoci#188user.rootlesscontainers specification, which allows
for persistent on-disk emulation of chown(2) inside rootless containers.
This implementation is interoperable with @AkihiroSuda's PRoot
fork (though we do not test its interoperability at the
moment) as both tools use the same protobuf
specification. opencontainers/umoci#227umoci 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. opencontainers/umoci#224 opencontainers/umoci#229umoci 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.
opencontainers/umoci#171 opencontainers/umoci#230umoci 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. opencontainers/umoci#174 opencontainers/umoci#187umoci 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. opencontainers/umoci#198umoci 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).
opencontainers/umoci#222 opencontainers/umoci#223Nothing published for this version
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