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Merge pull request #16748 from ygalblum/quadlet_kube_userns

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Quadlet Kube: Add support for userns flag
This commit is contained in:
OpenShift Merge Robot
2022-12-06 18:03:41 -05:00
committed by GitHub
parent 2e9eb170c6 1ea00ebda1
commit 883ff665b2
6 changed files with 90 additions and 45 deletions
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105
pkg/systemd/quadlet/quadlet.go
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@ -101,7 +101,11 @@ var supportedVolumeKeys = map[string]bool{
// Supported keys in "Kube" group
var supportedKubeKeys = map[string]bool{
KeyYaml: true,
KeyYaml: true,
KeyRemapUID: true,
KeyRemapGID: true,
KeyRemapUsers: true,
KeyRemapUIDSize: true,
}
func replaceExtension(name string, extension string, extraPrefix string, extraSuffix string) string {
@ -351,48 +355,8 @@ func ConvertContainer(container *parser.UnitFile, isUser bool) (*parser.UnitFile
}
}
uidMaps := container.LookupAllStrv(ContainerGroup, KeyRemapUID)
gidMaps := container.LookupAllStrv(ContainerGroup, KeyRemapGID)
remapUsers, ok := container.LookupLast(ContainerGroup, KeyRemapUsers)
if ok && remapUsers != "" {
switch remapUsers {
case "":
if len(uidMaps) > 0 {
return nil, fmt.Errorf("UidMap set without RemapUsers")
}
if len(gidMaps) > 0 {
return nil, fmt.Errorf("GidMap set without RemapUsers")
}
case "manual":
for _, uidMap := range uidMaps {
podman.addf("--uidmap=%s", uidMap)
}
for _, gidMap := range gidMaps {
podman.addf("--gidmap=%s", gidMap)
}
case "auto":
autoOpts := make([]string, 0)
for _, uidMap := range uidMaps {
autoOpts = append(autoOpts, "uidmapping="+uidMap)
}
for _, gidMap := range gidMaps {
autoOpts = append(autoOpts, "gidmapping="+gidMap)
}
uidSize := container.LookupUint32(ContainerGroup, KeyRemapUIDSize, 0)
if uidSize > 0 {
autoOpts = append(autoOpts, fmt.Sprintf("size=%v", uidSize))
}
podman.addf("--userns=" + usernsOpts("auto", autoOpts))
case "keep-id":
if !isUser {
return nil, fmt.Errorf("RemapUsers=keep-id is unsupported for system units")
}
podman.addf("--userns=keep-id")
default:
return nil, fmt.Errorf("unsupported RemapUsers option '%s'", remapUsers)
}
if err := handleUserRemap(container, ContainerGroup, podman, isUser, true); err != nil {
return nil, err
}
volumes := container.LookupAll(ContainerGroup, KeyVolume)
@ -593,7 +557,7 @@ func ConvertVolume(volume *parser.UnitFile, name string) (*parser.UnitFile, erro
return service, nil
}
func ConvertKube(kube *parser.UnitFile) (*parser.UnitFile, error) {
func ConvertKube(kube *parser.UnitFile, isUser bool) (*parser.UnitFile, error) {
service := kube.Dup()
service.Filename = replaceExtension(kube.Filename, ".service", "", "")
@ -660,6 +624,10 @@ func ConvertKube(kube *parser.UnitFile) (*parser.UnitFile, error) {
"--service-container=true",
)
if err := handleUserRemap(kube, KubeGroup, execStart, isUser, false); err != nil {
return nil, err
}
execStart.add(yamlPath)
service.AddCmdline(ServiceGroup, "ExecStart", execStart.Args)
@ -670,3 +638,52 @@ func ConvertKube(kube *parser.UnitFile) (*parser.UnitFile, error) {
return service, nil
}
func handleUserRemap(unitFile *parser.UnitFile, groupName string, podman *PodmanCmdline, isUser, supportManual bool) error {
uidMaps := unitFile.LookupAllStrv(groupName, KeyRemapUID)
gidMaps := unitFile.LookupAllStrv(groupName, KeyRemapGID)
remapUsers, _ := unitFile.LookupLast(groupName, KeyRemapUsers)
switch remapUsers {
case "":
if len(uidMaps) > 0 {
return fmt.Errorf("UidMap set without RemapUsers")
}
if len(gidMaps) > 0 {
return fmt.Errorf("GidMap set without RemapUsers")
}
case "manual":
if supportManual {
for _, uidMap := range uidMaps {
podman.addf("--uidmap=%s", uidMap)
}
for _, gidMap := range gidMaps {
podman.addf("--gidmap=%s", gidMap)
}
} else {
return fmt.Errorf("RemapUsers=manual is not supported")
}
case "auto":
autoOpts := make([]string, 0)
for _, uidMap := range uidMaps {
autoOpts = append(autoOpts, "uidmapping="+uidMap)
}
for _, gidMap := range gidMaps {
autoOpts = append(autoOpts, "gidmapping="+gidMap)
}
uidSize := unitFile.LookupUint32(groupName, KeyRemapUIDSize, 0)
if uidSize > 0 {
autoOpts = append(autoOpts, fmt.Sprintf("size=%v", uidSize))
}
podman.addf("--userns=" + usernsOpts("auto", autoOpts))
case "keep-id":
if !isUser {
return fmt.Errorf("RemapUsers=keep-id is unsupported for system units")
}
podman.addf("--userns=keep-id")
default:
return fmt.Errorf("unsupported RemapUsers option '%s'", remapUsers)
}
return nil
}