package main

import (

"os"

"github.com/rn/iso9660wrap"

"github.com/spf13/cobra"

)

// WriteMetadataISO writes a metadata ISO file in a format usable by pkg/metadata

func WriteMetadataISO(path string, content []byte) error {

outfh, err := os.OpenFile(path, os.O_CREATE|os.O_WRONLY, 0644)

if err != nil {

return err

}

defer func() { _ = outfh.Close() }()

return iso9660wrap.WriteBuffer(outfh, content, "config")

}

func metadataCreateCmd() *cobra.Command {

cmd := &cobra.Command{

Use: "create",

Short: "create an ISO with metadata",

Long: `Create an ISO file with metadata in it.

Provided metadata will be written to '/config' in the ISO.

This is compatible with the linuxkit/metadata package.`,

Args: cobra.ExactArgs(2),

Example: "linuxkit metadata create file.iso \"metadata\"",

RunE: func(cmd *cobra.Command, args []string) error {

isoImage := args[0]

metadata := args[1]

return WriteMetadataISO(isoImage, []byte(metadata))

},

}

return cmd

}

func metadataCmd() *cobra.Command {

cmd := &cobra.Command{

Use: "metadata",

Short: "manage ISO metadata",

Long: `Manage ISO metadata.`,

}

cmd.AddCommand(metadataCreateCmd())

return cmd

}