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fa0fa8b1d0
This requires a further set of gofmt -s improvements to the code, but nothing major. golangci-lint 1.45.2 brings golang 1.18 support which might be needed in the future. Signed-off-by: Dirk Müller <dirk@dmllr.de>
25 lines
692 B
Go
25 lines
692 B
Go
//go:build linux && cgo
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package cmds
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import (
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"os"
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"github.com/containerd/containerd/pkg/userns"
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"github.com/pkg/errors"
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"github.com/rootless-containers/rootlesskit/pkg/parent/cgrouputil"
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)
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// EvacuateCgroup2 will handle evacuating the root cgroup in order to enable subtree_control,
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// if running as pid 1 without rootless support.
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func EvacuateCgroup2() error {
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if os.Getpid() == 1 && !userns.RunningInUserNS() {
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// The root cgroup has to be empty to enable subtree_control, so evacuate it by placing
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// ourselves in the init cgroup.
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if err := cgrouputil.EvacuateCgroup2("init"); err != nil {
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return errors.Wrap(err, "failed to evacuate root cgroup")
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}
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}
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return nil
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}
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