// FirstBoot will do some initial boot setup and then sync the
// state
func FirstBoot() error {
// Disable firstboot on classic for now. In the long run we want
// classic to have a firstboot as well so that we can install
// snaps in a classic environment (LP: #1609903). However right
// now firstboot is under heavy development so until the dust
// settles we disable it.
if release.OnClassic {
return nil
}
if firstboot.HasRun() {
return ErrNotFirstBoot
}
// FIXME: the netplan config is static, we do not need to generate
// it from snapd, we can just set it in e.g. ubuntu-core-config
if err := firstbootInitialNetworkConfig(); err != nil {
logger.Noticef("Failed during inital network configuration: %s", err)
}
// snappy will be in a very unhappy state if this happens,
// because populateStateFromSeed will error if there
// is a state file already
if err := populateStateFromSeed(); err != nil {
return err
}
return firstboot.StampFirstBoot()
}
// checkSnap ensures that the snap can be installed.
func checkSnap(st *state.State, snapFilePath string, curInfo *snap.Info, flags Flags) error {
// This assumes that the snap was already verified or --dangerous was used.
s, _, err := openSnapFile(snapFilePath, nil)
if err != nil {
return err
}
if s.NeedsDevMode() && !flags.DevModeAllowed() {
return fmt.Errorf("snap %q requires devmode or confinement override", s.Name())
}
// verify we have a valid architecture
if !arch.IsSupportedArchitecture(s.Architectures) {
return fmt.Errorf("snap %q supported architectures (%s) are incompatible with this system (%s)", s.Name(), strings.Join(s.Architectures, ", "), arch.UbuntuArchitecture())
}
// check assumes
err = checkAssumes(s)
if err != nil {
return err
}
if s.Type != snap.TypeGadget {
return nil
}
// gadget specific checks
if release.OnClassic {
// for the time being
return fmt.Errorf("cannot install a gadget snap on classic")
}
st.Lock()
defer st.Unlock()
currentGadget, err := GadgetInfo(st)
// in firstboot we have no gadget yet - that is ok
if err == state.ErrNoState && !firstboot.HasRun() {
return nil
}
if err != nil {
return fmt.Errorf("cannot find original gadget snap")
}
// TODO: actually compare snap ids, from current gadget and candidate
if currentGadget.Name() != s.Name() {
return fmt.Errorf("cannot replace gadget snap with a different one")
}
return nil
}