kelvin/warewulf
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Refactor overlayDir to container.RunDir()

Browse Source 
Signed-off-by: Jonathon Anderson <janderson@ciq.com>
This commit is contained in:
Jonathon Anderson
2024-06-06 16:59:48 -04:00
parent 0eba837950
commit 2c5e079d33
5 changed files with 42 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
internal/app/wwctl/container/exec/child/main.go
View File

@@ -21,8 +21,6 @@ import (
"github.com/warewulf/warewulf/internal/pkg/wwlog"
)
const exitEval = `$(VALU="$?" ; if [ $VALU == 0 ]; then echo create new image; else echo no new image; fi)`
func CobraRunE(cmd *cobra.Command, args []string) (err error) {
if os.Getpid() != 1 {
wwlog.Error("PID is not 1: %d", os.Getpid())
@@ -36,8 +34,9 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
os.Exit(1)
}
conf := warewulfconf.Get()
if overlayDir == "" {
overlayDir = path.Join(conf.Paths.WWChrootdir, "overlays")
runDir := container.RunDir(containerName)
if _, err := os.Stat(runDir); os.IsNotExist(err) {
return errors.Wrap(err, "container run directory does not exist")
}
mountPts := conf.MountsContainer
mountPts = append(container.InitMountPnts(binds), mountPts...)
@@ -45,11 +44,16 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
lowerObjects := checkMountPoints(containerName, mountPts)
// need to create a overlay, where the lower layer contains
// the missing mount points
wwlog.Verbose("for ephermal mount use tempdir %s", overlayDir)
// ignore errors as we are doomed if a tmp dir couldn't be written
_ = os.MkdirAll(path.Join(overlayDir, "work"), os.ModePerm)
_ = os.MkdirAll(path.Join(overlayDir, "lower"), os.ModePerm)
_ = os.MkdirAll(path.Join(overlayDir, "nodeoverlay"), os.ModePerm)
wwlog.Verbose("for ephermal mount use tempdir %s", runDir)
if err = os.Mkdir(path.Join(runDir, "work"), os.ModePerm); err != nil {
return err
}
if err = os.Mkdir(path.Join(runDir, "lower"), os.ModePerm); err != nil {
return err
}
if err = os.Mkdir(path.Join(runDir, "nodeoverlay"), os.ModePerm); err != nil {
return err
}
// handle all lower object, have some extra logic if the object is a file
for _, obj := range lowerObjects {
newFile := ""
@@ -57,12 +61,12 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
newFile = filepath.Base(obj)
obj = filepath.Dir(obj)
}
err = os.MkdirAll(filepath.Join(overlayDir, "lower", obj), os.ModePerm)
err = os.Mkdir(filepath.Join(runDir, "lower", obj), os.ModePerm)
if err != nil {
wwlog.Warn("couldn't create directory for mounts: %s", err)
}
if newFile != "" {
desc, err := os.Create(filepath.Join(overlayDir, "lower", obj, newFile))
desc, err := os.Create(filepath.Join(runDir, "lower", obj, newFile))
if err != nil {
wwlog.Warn("couldn't create directory for mounts: %s", err)
}
@@ -75,10 +79,10 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
if err != nil {
return errors.Wrap(err, "failed to mount")
}
ps1Str := fmt.Sprintf("[%s|%s] Warewulf> ", exitEval, containerName)
ps1Str := fmt.Sprintf("[%s] Warewulf> ", containerName)
if len(lowerObjects) != 0 && nodename == "" {
options := fmt.Sprintf("lowerdir=%s,upperdir=%s,workdir=%s",
path.Join(overlayDir, "lower"), containerPath, path.Join(overlayDir, "work"))
path.Join(runDir, "lower"), containerPath, path.Join(runDir, "work"))
wwlog.Debug("overlay options: %s", options)
err = syscall.Mount("overlay", containerPath, "overlay", 0, options)
if err != nil {
@@ -103,13 +107,13 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
}
overlays := nodes[0].SystemOverlay.GetSlice()
overlays = append(overlays, nodes[0].RuntimeOverlay.GetSlice()...)
err = overlay.BuildOverlayIndir(nodes[0], overlays, path.Join(overlayDir, "nodeoverlay"))
err = overlay.BuildOverlayIndir(nodes[0], overlays, path.Join(runDir, "nodeoverlay"))
if err != nil {
wwlog.Error("Could not build overlay: %s", err)
os.Exit(1)
}
options := fmt.Sprintf("lowerdir=%s:%s:%s",
path.Join(overlayDir, "lower"), containerPath, path.Join(overlayDir, "nodeoverlay"))
path.Join(runDir, "lower"), containerPath, path.Join(runDir, "nodeoverlay"))
wwlog.Debug("overlay options: %s", options)
err = syscall.Mount("overlay", containerPath, "overlay", 0, options)
if err != nil {
@@ -171,11 +175,8 @@ func CobraRunE(cmd *cobra.Command, args []string) (err error) {
os.Setenv("PATH", "/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin")
os.Setenv("HISTFILE", "/dev/null")
_ = syscall.Exec(args[1], args[1:], os.Environ())
/*
Exec replaces the actual program, so nothing to do here afterwards
*/
return nil
wwlog.Debug("Exec: %s %s", args[1], args[1:])
return syscall.Exec(args[1], args[1:], os.Environ())
}
/*