This updates the platforms package to be an alias for the new platforms module.
This helps transitioning consumers to the new module, and makes sure that
containerd v2 and v1 use the same definitions.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This migrates uses of github.com/opencontainers/runc/libcontainer/user
to the new github.com/moby/sys/user module, which was extracted from
runc at commit [opencontainers/runc@a3a0ec48c4].
This is the initial release of the module, which is a straight copy, but
some changes may be made in the next release (such as fixing camel-casing
in some fields and functions (Uid -> UID).
[opencontainers/runc@a3a0ec48c4]: a3a0ec48c4
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 4b1bb1293e)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Scratch images don't necessarily have the /etc/group file, so we shouldn't
fail if opening/parsing it is not needed: if all the group to add are numeric.
Signed-off-by: Djordje Lukic <djordje.lukic@docker.com>
Windows Containers have a default path already configured at bootup. WithDefaultPathEnv overwrites this with a unix path
Signed-off-by: charitykathure <kathurecharity505@gmail.com>
(cherry picked from commit 7d63690874)
Signed-off-by: Charity Kathure <ckathure@microsoft.com>
The ability to read these files may offer a power-based sidechannel
attack against any workloads running on the same kernel.
This was originally [CVE-2020-8694][1], which was fixed in
[949dd0104c496fa7c14991a23c03c62e44637e71][2] by restricting read access
to root. However, since many containers run as root, this is not
sufficient for our use case.
While untrusted code should ideally never be run, we can add some
defense in depth here by masking out the device class by default.
[Other mechanisms][3] to access this hardware exist, but they should not
be accessible to a container due to other safeguards in the
kernel/container stack (e.g. capabilities, perf paranoia).
[1]: https://nvd.nist.gov/vuln/detail/CVE-2020-8694
[2]: 949dd0104c
[3]: https://web.eece.maine.edu/~vweaver/projects/rapl/
Signed-off-by: Bjorn Neergaard <bjorn.neergaard@docker.com>
(cherry picked from commit 106a9b7767)
Signed-off-by: Bjorn Neergaard <bjorn.neergaard@docker.com>
Commit cab056226f removed the tryReadonlyMounts
utility, in favor of mounts.ReadOnlyMounts() that was added in commit
daa3a7665e.
That change made part of the comment redundant, because mounts.ReadOnlyMounts
handles both overlayfs read-only mounts (by skipping the workdir mounts), and
sets the "ro" option for other mount-types, but the reason why we're using a
read-only mount is still relevant, so restoring that part of the comment.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit cb2c3ec8f8)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit adds supports for the ArgsEscaped
value for the image got from the dockerfile.
It is used to evaluate and process the image
entrypoint/cmd and container entrypoint/cmd
options got from the podspec.
Signed-off-by: Kirtana Ashok <Kirtana.Ashok@microsoft.com>
This function was added in ae22854e2b, but never
returned an error, and the error-return was not handled on the callsite. This
patch removes the unused error return, and moves it to a file related to mounts,
which allowed for some of the stubs to be removed and shared between non-FreeBSD
platforms.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
A domainname field was recently added to the OCI spec. Prior to this
folks would need to set this with a sysctl, but now runtimes should be
able to setdomainname(2). There's an open change to runc at the moment
to add support for this so I've just left testing as a couple spec
validations in CRI until that's in and usable.
Signed-off-by: Danny Canter <danny@dcantah.dev>
Go 1.18 and up now provides a strings.Cut() which is better suited for
splitting key/value pairs (and similar constructs), and performs better:
```go
func BenchmarkSplit(b *testing.B) {
b.ReportAllocs()
data := []string{"12hello=world", "12hello=", "12=hello", "12hello"}
for i := 0; i < b.N; i++ {
for _, s := range data {
_ = strings.SplitN(s, "=", 2)[0]
}
}
}
func BenchmarkCut(b *testing.B) {
b.ReportAllocs()
data := []string{"12hello=world", "12hello=", "12=hello", "12hello"}
for i := 0; i < b.N; i++ {
for _, s := range data {
_, _, _ = strings.Cut(s, "=")
}
}
}
```
BenchmarkSplit
BenchmarkSplit-10 8244206 128.0 ns/op 128 B/op 4 allocs/op
BenchmarkCut
BenchmarkCut-10 54411998 21.80 ns/op 0 B/op 0 allocs/op
While looking at occurrences of `strings.Split()`, I also updated some for alternatives,
or added some constraints; for cases where an specific number of items is expected, I used `strings.SplitN()`
with a suitable limit. This prevents (theoretical) unlimited splits.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This change modifies WithLinuxDevice to take an option `followSymlink`
and be unexported as `withLinuxDevice`. An option
`WithLinuxDeviceFollowSymlinks` will call this unexported option to
follow a symlink, which will resolve a symlink before calling
`DeviceFromPath`. `WithLinuxDevice` has been changed to call
`withLinuxDevice` without following symlinks.
Signed-off-by: Gavin Inglis <giinglis@amazon.com>
Remove nolint-comments that weren't hit by linters, and remove the "structcheck"
and "varcheck" linters, as they have been deprecated:
WARN [runner] The linter 'structcheck' is deprecated (since v1.49.0) due to: The owner seems to have abandoned the linter. Replaced by unused.
WARN [runner] The linter 'varcheck' is deprecated (since v1.49.0) due to: The owner seems to have abandoned the linter. Replaced by unused.
WARN [linters context] structcheck is disabled because of generics. You can track the evolution of the generics support by following the https://github.com/golangci/golangci-lint/issues/2649.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
- fix "nolint" comments to be in the correct format (`//nolint:<linters>[,<linter>`
no leading space, required colon (`:`) and linters.
- remove "nolint" comments for errcheck, which is disabled in our config.
- remove "nolint" comments that were no longer needed (nolintlint).
- where known, add a comment describing why a "nolint" was applied.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
As WithCDI is CRI-only API it makes sense to move it
out of oci module.
This move can also fix possible issues with this API when
CRI plugin is disabled.
Signed-off-by: Ed Bartosh <eduard.bartosh@intel.com>
ArgsEscaped has now been merged into upstream OCI image spec.
This change removes the workaround we were doing in containerd
to deserialize the extra json outside of the spec and instead
just uses the formal spec types.
Signed-off-by: Justin Terry <jlterry@amazon.com>
Mount options are marked `json:omitempty`. An empty slice in the default
object caused TestWithSpecFromFile to fail.
Signed-off-by: Samuel Karp <me@samuelkarp.com>
A container should not have access to tun/tap device, unless it is explicitly
specified in configuration.
This device was already removed from docker's default, and runc's default;
- 2ce40b6ad7
- 9c4570a958
Per the commit message in runc, this should also fix these messages;
> Apr 26 03:46:56 foo.bar systemd[1]: Couldn't stat device /dev/char/10:200: No such file or directory
coming from systemd on every container start, when the systemd cgroup driver
is used, and the system runs an old (< v240) version of systemd
(the message was presumably eliminated by [1]).
[1]: d5aecba6e0
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
