44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
// Package operatingsystem provides helper function to get the operating system
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// name for different platforms.
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package operatingsystem
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import (
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"bytes"
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"errors"
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"io/ioutil"
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)
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var (
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// file to use to detect if the daemon is running in a container
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proc1Cgroup = "/proc/1/cgroup"
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// file to check to determine Operating System
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etcOsRelease = "/etc/os-release"
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)
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// GetOperatingSystem gets the name of the current operating system.
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func GetOperatingSystem() (string, error) {
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b, err := ioutil.ReadFile(etcOsRelease)
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if err != nil {
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return "", err
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}
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if i := bytes.Index(b, []byte("PRETTY_NAME")); i >= 0 {
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b = b[i+13:]
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return string(b[:bytes.IndexByte(b, '"')]), nil
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}
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return "", errors.New("PRETTY_NAME not found")
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}
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// IsContainerized returns true if we are running inside a container.
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func IsContainerized() (bool, error) {
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b, err := ioutil.ReadFile(proc1Cgroup)
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if err != nil {
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return false, err
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}
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for _, line := range bytes.Split(b, []byte{'\n'}) {
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if len(line) > 0 && !bytes.HasSuffix(line, []byte{'/'}) && !bytes.HasSuffix(line, []byte("init.scope")) {
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return true, nil
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}
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}
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return false, nil
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}
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