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|
/*
Debootstrap Action
Construct the target rootfs with debootstrap tool.
Please keep in mind -- file `/etc/resolv.conf` will be removed after execution.
Most of the OS scripts used by `debootstrap` copy `resolv.conf` from the host,
and this may lead to incorrect configuration when becoming part of the created rootfs.
Yaml syntax:
- action: debootstrap
mirror: URL
suite: "name"
components: <list of components>
variant: "name"
keyring-package:
keyring-file:
Mandatory properties:
- suite -- release code name or symbolic name (e.g. "stable")
Optional properties:
- check-gpg -- verify GPG signatures on Release files, true by default
- mirror -- URL with Debian-compatible repository
If no mirror is specified debos will use http://deb.debian.org/debian as default.
- variant -- name of the bootstrap script variant to use
- components -- list of components to use for packages selection.
If no components are specified debos will use main as default.
Example:
components: [ main, contrib ]
- keyring-package -- keyring for package validation.
- keyring-file -- keyring file for repository validation.
- merged-usr -- use merged '/usr' filesystem, true by default.
*/
package actions
import (
"fmt"
"io"
"os"
"path"
"strings"
"github.com/go-debos/debos"
)
type DebootstrapAction struct {
debos.BaseAction `yaml:",inline"`
Suite string
Mirror string
Variant string
KeyringPackage string `yaml:"keyring-package"`
KeyringFile string `yaml:"keyring-file"`
Components []string
MergedUsr bool `yaml:"merged-usr"`
CheckGpg bool `yaml:"check-gpg"`
}
func NewDebootstrapAction() *DebootstrapAction {
d := DebootstrapAction{}
// Use filesystem with merged '/usr' by default
d.MergedUsr = true
// Be secure by default
d.CheckGpg = true
// Use main as default component
d.Components = []string {"main"}
// Set generic default mirror
d.Mirror = "http://deb.debian.org/debian"
return &d
}
func (d *DebootstrapAction) RunSecondStage(context debos.DebosContext) error {
cmdline := []string{
"/debootstrap/debootstrap",
"--no-check-gpg",
"--second-stage"}
if d.Components != nil {
s := strings.Join(d.Components, ",")
cmdline = append(cmdline, fmt.Sprintf("--components=%s", s))
}
c := debos.NewChrootCommandForContext(context)
// Can't use nspawn for debootstrap as it wants to create device nodes
c.ChrootMethod = debos.CHROOT_METHOD_CHROOT
err := c.Run("Debootstrap (stage 2)", cmdline...)
if (err != nil) {
log := path.Join(context.Rootdir, "debootstrap/debootstrap.log")
_ = debos.Command{}.Run("debootstrap.log", "cat", log)
}
return err
}
func (d *DebootstrapAction) Run(context *debos.DebosContext) error {
d.LogStart()
cmdline := []string{"debootstrap"}
if d.MergedUsr {
cmdline = append(cmdline, "--merged-usr")
} else {
cmdline = append(cmdline, "--no-merged-usr")
}
if !d.CheckGpg {
cmdline = append(cmdline, fmt.Sprintf("--no-check-gpg"))
} else if d.KeyringFile != "" {
path := debos.CleanPathAt(d.KeyringFile, context.RecipeDir)
cmdline = append(cmdline, fmt.Sprintf("--keyring=%s", path))
}
if d.KeyringPackage != "" {
cmdline = append(cmdline, fmt.Sprintf("--include=%s", d.KeyringPackage))
}
if d.Components != nil {
s := strings.Join(d.Components, ",")
cmdline = append(cmdline, fmt.Sprintf("--components=%s", s))
}
/* FIXME drop the hardcoded amd64 assumption" */
foreign := context.Architecture != "amd64"
if foreign {
cmdline = append(cmdline, "--foreign")
cmdline = append(cmdline, fmt.Sprintf("--arch=%s", context.Architecture))
}
if d.Variant != "" {
cmdline = append(cmdline, fmt.Sprintf("--variant=%s", d.Variant))
}
cmdline = append(cmdline, d.Suite)
cmdline = append(cmdline, context.Rootdir)
cmdline = append(cmdline, d.Mirror)
cmdline = append(cmdline, "/usr/share/debootstrap/scripts/unstable")
err := debos.Command{}.Run("Debootstrap", cmdline...)
if err != nil {
log := path.Join(context.Rootdir, "debootstrap/debootstrap.log")
_ = debos.Command{}.Run("debootstrap.log", "cat", log)
return err
}
if foreign {
err = d.RunSecondStage(*context)
if err != nil {
return err
}
}
/* HACK */
srclist, err := os.OpenFile(path.Join(context.Rootdir, "etc/apt/sources.list"),
os.O_RDWR|os.O_CREATE, 0755)
if err != nil {
return err
}
_, err = io.WriteString(srclist, fmt.Sprintf("deb %s %s %s\n",
d.Mirror,
d.Suite,
strings.Join(d.Components, " ")))
if err != nil {
return err
}
srclist.Close()
/* Cleanup resolv.conf after debootstrap */
resolvconf := path.Join(context.Rootdir, "/etc/resolv.conf")
if _, err = os.Stat(resolvconf); !os.IsNotExist(err) {
if err = os.Remove(resolvconf); err != nil {
return err
}
}
c := debos.NewChrootCommandForContext(*context)
return c.Run("apt clean", "/usr/bin/apt-get", "clean")
}
|
