github/linuxkit
1
0
Fork 0
mirror of https://github.com/linuxkit/linuxkit.git synced 2025-07-20 09:39:08 +00:00
Code Issues Projects Releases Wiki Activity

cli: Add support for passing meta data to a hyperkit VM

Browse Source 
Add a -data option to the HyperKit "run" backend. This either
adds a string or a file to a ISO which is attached to the VM.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2017-04-02 19:30:57 +01:00
parent ebcf91f19c
commit 63bdeab660
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
src/cmd/moby/run_hyperkit.go
View File

@ -8,6 +8,7 @@ import (
log "github.com/Sirupsen/logrus"
"github.com/docker/hyperkit/go"
"github.com/rneugeba/iso9660wrap"
)
// Process the run arguments and execute run
@ -25,6 +26,7 @@ func runHyperKit(args []string) {
mem := hyperkitCmd.Int("mem", 1024, "Amount of memory in MB")
diskSz := hyperkitCmd.Int("disk-size", 0, "Size of Disk in MB")
disk := hyperkitCmd.String("disk", "", "Path to disk image to used")
data := hyperkitCmd.String("data", "", "Metadata to pass to VM (either a path to a file or a string)")
hyperkitCmd.Parse(args)
remArgs := hyperkitCmd.Args()
@ -35,6 +37,29 @@ func runHyperKit(args []string) {
}
prefix := remArgs[0]
isoPath := ""
if *data != "" {
var d []byte
if _, err := os.Stat(*data); os.IsNotExist(err) {
d = []byte(*data)
} else {
d, err = ioutil.ReadFile(*data)
if err != nil {
log.Fatalf("Cannot read user data: %v", err)
}
}
isoPath = prefix + "-data.iso"
outfh, err := os.OpenFile(isoPath, os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
log.Fatalf("Cannot create user data ISO: %v", err)
}
err = iso9660wrap.WriteBuffer(outfh, d, "config")
if err != nil {
log.Fatalf("Cannot write user data ISO: %v", err)
}
outfh.Close()
}
// Run
cmdline, err := ioutil.ReadFile(prefix + "-cmdline")
if err != nil {
@ -52,6 +77,7 @@ func runHyperKit(args []string) {
h.Kernel = prefix + "-bzImage"
h.Initrd = prefix + "-initrd.img"
h.ISOImage = isoPath
h.CPUs = *cpus
h.Memory = *mem
h.DiskSize = *diskSz