c55a4ac779
The io/ioutil package has been deprecated in Go 1.16. This commit replaces the existing io/ioutil functions with their new definitions in io and os packages. Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
90 lines
1.7 KiB
Go
90 lines
1.7 KiB
Go
//go:build !windows
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// +build !windows
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package main
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import (
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"bytes"
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"os"
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"os/exec"
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"strings"
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"github.com/docker/docker/pkg/sysinfo"
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)
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var (
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// SysInfo stores information about which features a kernel supports.
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SysInfo *sysinfo.SysInfo
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)
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func cpuCfsPeriod() bool {
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return testEnv.DaemonInfo.CPUCfsPeriod
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}
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func cpuCfsQuota() bool {
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return testEnv.DaemonInfo.CPUCfsQuota
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}
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func cpuShare() bool {
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return testEnv.DaemonInfo.CPUShares
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}
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func oomControl() bool {
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return testEnv.DaemonInfo.OomKillDisable
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}
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func pidsLimit() bool {
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return SysInfo.PidsLimit
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}
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func memoryLimitSupport() bool {
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return testEnv.DaemonInfo.MemoryLimit
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}
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func memoryReservationSupport() bool {
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return SysInfo.MemoryReservation
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}
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func swapMemorySupport() bool {
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return testEnv.DaemonInfo.SwapLimit
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}
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func memorySwappinessSupport() bool {
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return testEnv.IsLocalDaemon() && SysInfo.MemorySwappiness
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}
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func blkioWeight() bool {
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return testEnv.IsLocalDaemon() && SysInfo.BlkioWeight
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}
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func cgroupCpuset() bool {
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return testEnv.DaemonInfo.CPUSet
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}
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func seccompEnabled() bool {
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return supportsSeccomp && SysInfo.Seccomp
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}
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func bridgeNfIptables() bool {
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return !SysInfo.BridgeNFCallIPTablesDisabled
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}
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func unprivilegedUsernsClone() bool {
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content, err := os.ReadFile("/proc/sys/kernel/unprivileged_userns_clone")
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return err != nil || !strings.Contains(string(content), "0")
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}
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func overlayFSSupported() bool {
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cmd := exec.Command(dockerBinary, "run", "--rm", "busybox", "/bin/sh", "-c", "cat /proc/filesystems")
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out, err := cmd.CombinedOutput()
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if err != nil {
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return false
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}
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return bytes.Contains(out, []byte("overlay\n"))
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}
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func init() {
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if testEnv.IsLocalDaemon() {
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SysInfo = sysinfo.New()
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}
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}
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