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Merge pull request #2197 from ijc/qemu-envvar-overrides

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qemu: allow kvm and containerized options to be overridden by the env…
This commit is contained in:
Justin Cormack 2017-07-13 16:25:51 +01:00 committed by GitHub
commit 944793312a
1 changed files with 18 additions and 0 deletions
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18
src/cmd/linuxkit/run_qemu.go
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@ -42,6 +42,19 @@ func haveKVM() bool {
return !os.IsNotExist(err)
}
func envOverrideBool(env string, b *bool) {
val := os.Getenv(env)
if val == "" {
return
}
var err error
*b, err = strconv.ParseBool(val)
if err != nil {
log.Fatal("Unable to parse %q=%q as a boolean", env, val)
}
}
func runQemu(args []string) {
invoked := filepath.Base(os.Args[0])
flags := flag.NewFlagSet("qemu", flag.ExitOnError)
@ -89,6 +102,11 @@ func runQemu(args []string) {
}
remArgs := flags.Args()
// These envvars override the corresponding command line
// options. So this must remain after the `flags.Parse` above.
envOverrideBool("LINUXKIT_QEMU_KVM", enableKVM)
envOverrideBool("LINUXKIT_QEMU_CONTAINERIZED", qemuContainerized)
if len(remArgs) == 0 {
fmt.Println("Please specify the path to the image to boot")
flags.Usage()