mirror of
https://github.com/linuxkit/linuxkit.git
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bba8054bba
- Move HyperKit code into a separate file. It should be compilable on all supported OSes now. - Add a (optional) subcommand to "moby run" to select a backend i.e., "moby run hyperkit [options] [prefix]" - On macOS the default is "hyperkit" so that: "moby run [options] [prefix]" just works - Add enough command line parsing to make it easy to add new backends to the run command Update help messages. Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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log "github.com/Sirupsen/logrus"
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"github.com/docker/hyperkit/go"
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)
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// Process the run arguments and execute run
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func runHyperKit(args []string) {
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hyperkitCmd := flag.NewFlagSet("hyperkit", flag.ExitOnError)
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hyperkitCmd.Usage = func() {
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fmt.Printf("USAGE: %s run hyperkit [options] [prefix]\n\n", os.Args[0])
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fmt.Printf("'prefix' specifies the path to the VM image.\n")
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fmt.Printf("It defaults to './moby'.\n")
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fmt.Printf("\n")
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fmt.Printf("Options:\n")
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hyperkitCmd.PrintDefaults()
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}
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runCPUs := hyperkitCmd.Int("cpus", 1, "Number of CPUs")
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runMem := hyperkitCmd.Int("mem", 1024, "Amount of memory in MB")
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runDiskSz := hyperkitCmd.Int("disk-size", 0, "Size of Disk in MB")
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runDisk := hyperkitCmd.String("disk", "", "Path to disk image to used")
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hyperkitCmd.Parse(args)
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remArgs := hyperkitCmd.Args()
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prefix := "moby"
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if len(remArgs) > 0 {
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prefix = remArgs[0]
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}
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runHyperKitInternal(*runCPUs, *runMem, *runDiskSz, *runDisk, prefix)
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}
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func runHyperKitInternal(cpus, mem, diskSz int, disk, prefix string) {
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cmdline, err := ioutil.ReadFile(prefix + "-cmdline")
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if err != nil {
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log.Fatalf("Cannot open cmdline file: %v", err)
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}
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if diskSz != 0 && disk == "" {
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disk = prefix + "-disk.img"
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}
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h, err := hyperkit.New("", "", "auto", disk)
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if err != nil {
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log.Fatalln("Error creating hyperkit: ", err)
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}
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h.Kernel = prefix + "-bzImage"
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h.Initrd = prefix + "-initrd.img"
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h.CPUs = cpus
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h.Memory = mem
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h.DiskSize = diskSz
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err = h.Run(string(cmdline))
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if err != nil {
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log.Fatalf("Cannot run hyperkit: %v", err)
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}
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}
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