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/*
OstreeDeploy Action
Deploy the OSTree branch to the image.
If any preparation has been done for rootfs, it can be overwritten
during this step.
Action 'image-partition' must be called prior to OSTree deploy.
Yaml syntax:
- action: ostree-deploy
repository: repository name
remote_repository: URL
branch: branch name
os: os name
tls-client-cert-path: path to client certificate
tls-client-key-path: path to client certificate key
setup-fstab: bool
setup-kernel-cmdline: bool
appendkernelcmdline: arguments
collection-id: org.apertis.example
Mandatory properties:
- remote_repository -- URL to remote OSTree repository for pulling stateroot branch.
Currently not implemented, please prepare local repository instead.
- repository -- path to repository with OSTree structure.
This path is relative to 'artifact' directory.
- os -- os deployment name, as explained in:
https://ostree.readthedocs.io/en/latest/manual/deployment/
- branch -- branch of the repository to use for populating the image.
Optional properties:
- setup-fstab -- create '/etc/fstab' file for image
- setup-kernel-cmdline -- add the information from the 'image-partition'
action to the configured commandline.
- append-kernel-cmdline -- additional kernel command line arguments passed to kernel.
- tls-client-cert-path -- path to client certificate to use for the remote repository
- tls-client-key-path -- path to client certificate key to use for the remote repository
- collection-id -- Collection ID ref binding (require libostree 2018.6).
*/
package actions
import (
"fmt"
"io"
"os"
"path"
"strings"
"github.com/go-debos/debos"
ostree "github.com/sjoerdsimons/ostree-go/pkg/otbuiltin"
)
type OstreeDeployAction struct {
debos.BaseAction `yaml:",inline"`
Repository string
RemoteRepository string "remote_repository"
Branch string
Os string
SetupFSTab bool `yaml:"setup-fstab"`
SetupKernelCmdline bool `yaml:"setup-kernel-cmdline"`
AppendKernelCmdline string `yaml:"append-kernel-cmdline"`
TlsClientCertPath string `yaml:"tls-client-cert-path"`
TlsClientKeyPath string `yaml:"tls-client-key-path"`
CollectionID string `yaml:"collection-id"`
}
func NewOstreeDeployAction() *OstreeDeployAction {
ot := &OstreeDeployAction{SetupFSTab: true, SetupKernelCmdline: true}
ot.Description = "Deploying from ostree"
return ot
}
func (ot *OstreeDeployAction) setupFSTab(deployment *ostree.Deployment, context *debos.DebosContext) error {
deploymentDir := fmt.Sprintf("ostree/deploy/%s/deploy/%s.%d",
deployment.Osname(), deployment.Csum(), deployment.Deployserial())
etcDir := path.Join(context.Rootdir, deploymentDir, "etc")
err := os.Mkdir(etcDir, 0755)
if err != nil && !os.IsExist(err) {
return err
}
dst, err := os.OpenFile(path.Join(etcDir, "fstab"), os.O_WRONLY|os.O_CREATE, 0755)
defer dst.Close()
if err != nil {
return err
}
_, err = io.Copy(dst, &context.ImageFSTab)
return err
}
func (ot *OstreeDeployAction) Run(context *debos.DebosContext) error {
ot.LogStart()
// This is to handle cases there we didn't partition an image
if len(context.ImageMntDir) != 0 {
/* First deploy the current rootdir to the image so it can seed e.g.
* bootloader configuration */
err := debos.Command{}.Run("Deploy to image", "cp", "-a", context.Rootdir+"/.", context.ImageMntDir)
if err != nil {
return fmt.Errorf("rootfs deploy failed: %v", err)
}
context.Rootdir = context.ImageMntDir
context.Origins["filesystem"] = context.ImageMntDir
}
repoPath := "file://" + path.Join(context.Artifactdir, ot.Repository)
sysroot := ostree.NewSysroot(context.Rootdir)
err := sysroot.InitializeFS()
if err != nil {
return err
}
err = sysroot.InitOsname(ot.Os, nil)
if err != nil {
return err
}
/* HACK: Getting the repository form the sysroot gets ostree confused on
* whether it should configure /etc/ostree or the repo configuration,
so reopen by hand */
/* dstRepo, err := sysroot.Repo(nil) */
dstRepo, err := ostree.OpenRepo(path.Join(context.Rootdir, "ostree/repo"))
if err != nil {
return err
}
/* FIXME: add support for gpg signing commits so this is no longer needed */
opts := ostree.RemoteOptions{NoGpgVerify: true,
TlsClientCertPath: ot.TlsClientCertPath,
TlsClientKeyPath: ot.TlsClientKeyPath,
CollectionId: ot.CollectionID,
}
err = dstRepo.RemoteAdd("origin", ot.RemoteRepository, opts, nil)
if err != nil {
return err
}
var options ostree.PullOptions
options.OverrideRemoteName = "origin"
options.Refs = []string{ot.Branch}
err = dstRepo.PullWithOptions(repoPath, options, nil, nil)
if err != nil {
return err
}
/* Required by ostree to make sure a bunch of information was pulled in */
sysroot.Load(nil)
revision, err := dstRepo.ResolveRev(ot.Branch, false)
if err != nil {
return err
}
var kargs []string
if ot.SetupKernelCmdline {
kargs = append(kargs, context.ImageKernelRoot)
}
if ot.AppendKernelCmdline != "" {
s := strings.Split(ot.AppendKernelCmdline, " ")
kargs = append(kargs, s...)
}
origin := sysroot.OriginNewFromRefspec("origin:" + ot.Branch)
deployment, err := sysroot.DeployTree(ot.Os, revision, origin, nil, kargs, nil)
if err != nil {
return err
}
if ot.SetupFSTab {
err = ot.setupFSTab(deployment, context)
if err != nil {
return err
}
}
err = sysroot.SimpleWriteDeployment(ot.Os, deployment, nil, 0, nil)
if err != nil {
return err
}
/* libostree keeps some information, like repo lock file descriptor, in
* thread specific variables. As GC can be run from another thread, it
* may not been able to access this, preventing to free them correctly.
* To prevent this, explicitly dereference libostree objects. */
dstRepo.Unref()
sysroot.Unref()
return nil
}
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