42 lines
1003 B
Go
42 lines
1003 B
Go
package requirement // import "github.com/docker/docker/integration/internal/requirement"
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import (
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"os"
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"strings"
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"github.com/docker/docker/pkg/parsers/kernel"
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"gotest.tools/v3/icmd"
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)
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// CgroupNamespacesEnabled checks if cgroup namespaces are enabled on this host
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func CgroupNamespacesEnabled() bool {
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if _, err := os.Stat("/proc/self/ns/cgroup"); os.IsNotExist(err) {
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return false
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}
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return true
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}
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func overlayFSSupported() bool {
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result := icmd.RunCommand("/bin/sh", "-c", "cat /proc/filesystems")
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if result.Error != nil {
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return false
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}
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return strings.Contains(result.Combined(), "overlay\n")
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}
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// Overlay2Supported returns true if the current system supports overlay2 as graphdriver
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func Overlay2Supported(kernelVersion string) bool {
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if !overlayFSSupported() {
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return false
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}
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daemonV, err := kernel.ParseRelease(kernelVersion)
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if err != nil {
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return false
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}
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requiredV := kernel.VersionInfo{Kernel: 4}
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return kernel.CompareKernelVersion(*daemonV, requiredV) > -1
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}
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