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a4cc76bd3e
* client: refactor cgroups management in client * client: fingerprint numa topology * client: plumb numa and cgroups changes to drivers * client: cleanup task resource accounting * client: numa client and config plumbing * lib: add a stack implementation * tools: remove ec2info tool * plugins: fixup testing for cgroups / numa changes * build: update makefile and package tests and cl
43 lines
646 B
Go
43 lines
646 B
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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//go:build linux
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package cgroupslib
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import (
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"bufio"
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"io"
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"os"
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"strings"
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"github.com/hashicorp/go-set"
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)
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func detect() Mode {
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f, err := os.Open("/proc/self/mountinfo")
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if err != nil {
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return OFF
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}
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defer func() {
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_ = f.Close()
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}()
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return scan(f)
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}
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func scan(in io.Reader) Mode {
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scanner := bufio.NewScanner(in)
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for scanner.Scan() {
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tokens := set.From(strings.Fields(scanner.Text()))
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if tokens.Contains("/sys/fs/cgroup") {
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if tokens.Contains("tmpfs") {
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return CG1
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}
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if tokens.Contains("cgroup2") {
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return CG2
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}
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}
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}
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return OFF
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}
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