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3c3e644c1c
We had a couple of regressions in containers/common in the last release. Before cutting a new release, let's vendor it here. Since 3.0 has been branched, we can vendor a non-release commit of c/common. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
28 lines
526 B
Go
28 lines
526 B
Go
package cgroupv2
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import (
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"sync"
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"syscall"
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"golang.org/x/sys/unix"
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)
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var (
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isCgroupV2Once sync.Once
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isCgroupV2 bool
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isCgroupV2Err error
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)
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// Enabled returns whether we are running on cgroup v2
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func Enabled() (bool, error) {
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isCgroupV2Once.Do(func() {
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var st syscall.Statfs_t
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if err := syscall.Statfs("/sys/fs/cgroup", &st); err != nil {
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isCgroupV2, isCgroupV2Err = false, err
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} else {
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isCgroupV2, isCgroupV2Err = st.Type == unix.CGROUP2_SUPER_MAGIC, nil
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}
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})
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return isCgroupV2, isCgroupV2Err
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}
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