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-rw-r--r--cmd/podman/common/create.go18
-rw-r--r--cmd/podman/common/specgen.go81
-rw-r--r--cmd/podman/containers/create.go19
-rw-r--r--pkg/specgen/container_validate.go4
-rw-r--r--pkg/specgen/generate/namespaces.go3
-rw-r--r--pkg/specgen/namespaces.go39
6 files changed, 101 insertions, 63 deletions
diff --git a/cmd/podman/common/create.go b/cmd/podman/common/create.go
index bdf762ed7..a0aed984c 100644
--- a/cmd/podman/common/create.go
+++ b/cmd/podman/common/create.go
@@ -49,8 +49,9 @@ func GetCreateFlags(cf *ContainerCLIOpts) *pflag.FlagSet {
"cap-drop", []string{},
"Drop capabilities from the container",
)
+ cgroupNS := ""
createFlags.StringVar(
- &cf.CGroupsNS,
+ &cgroupNS,
"cgroupns", containerConfig.CgroupNS(),
"cgroup namespace to use",
)
@@ -247,8 +248,9 @@ func GetCreateFlags(cf *ContainerCLIOpts) *pflag.FlagSet {
"interactive", "i", false,
"Keep STDIN open even if not attached",
)
+ ipcNS := ""
createFlags.StringVar(
- &cf.IPC,
+ &ipcNS,
"ipc", containerConfig.IPCNS(),
"IPC namespace to use",
)
@@ -329,8 +331,9 @@ func GetCreateFlags(cf *ContainerCLIOpts) *pflag.FlagSet {
"use `OS` instead of the running OS for choosing images",
)
// markFlagHidden(createFlags, "override-os")
+ pid := ""
createFlags.StringVar(
- &cf.PID,
+ &pid,
"pid", containerConfig.PidNS(),
"PID namespace to use",
)
@@ -394,8 +397,9 @@ func GetCreateFlags(cf *ContainerCLIOpts) *pflag.FlagSet {
"security-opt", containerConfig.SecurityOptions(),
"Security Options",
)
+ shmSize := ""
createFlags.StringVar(
- &cf.ShmSize,
+ &shmSize,
"shm-size", containerConfig.ShmSize(),
"Size of /dev/shm "+sizeWithUnitFormat,
)
@@ -460,13 +464,15 @@ func GetCreateFlags(cf *ContainerCLIOpts) *pflag.FlagSet {
"user", "u", "",
"Username or UID (format: <name|uid>[:<group|gid>])",
)
+ userNS := ""
createFlags.StringVar(
- &cf.UserNS,
+ &userNS,
"userns", containerConfig.Containers.UserNS,
"User namespace to use",
)
+ utsNS := ""
createFlags.StringVar(
- &cf.UTS,
+ &utsNS,
"uts", containerConfig.Containers.UTSNS,
"UTS namespace to use",
)
diff --git a/cmd/podman/common/specgen.go b/cmd/podman/common/specgen.go
index 10ae0bb2d..b90030f7f 100644
--- a/cmd/podman/common/specgen.go
+++ b/cmd/podman/common/specgen.go
@@ -222,55 +222,28 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
s.PortMappings = ep
s.Pod = c.Pod
- //s.CgroupNS = specgen.Namespace{
- // NSMode: ,
- // Value: "",
- //}
-
- //s.UserNS = specgen.Namespace{}
-
- // Kernel Namespaces
- // TODO Fix handling of namespace from pod
- // Instead of integrating here, should be done in libpod
- // However, that also involves setting up security opts
- // when the pod's namespace is integrated
- //namespaces = map[string]string{
- // "cgroup": c.CGroupsNS,
- // "pid": c.PID,
- // //"net": c.Net.Network.Value, // TODO need help here
- // "ipc": c.IPC,
- // "user": c.User,
- // "uts": c.UTS,
- //}
- //
- //if len(c.PID) > 0 {
- // split := strings.SplitN(c.PID, ":", 2)
- // // need a way to do thsi
- // specgen.Namespace{
- // NSMode: split[0],
- // }
- // //Value: split1 if len allows
- //}
- // TODO this is going to have be done after things like pod creation are done because
- // pod creation changes these values.
- //pidMode := ns.PidMode(namespaces["pid"])
- //usernsMode := ns.UsernsMode(namespaces["user"])
- //utsMode := ns.UTSMode(namespaces["uts"])
- //cgroupMode := ns.CgroupMode(namespaces["cgroup"])
- //ipcMode := ns.IpcMode(namespaces["ipc"])
- //// Make sure if network is set to container namespace, port binding is not also being asked for
- //netMode := ns.NetworkMode(namespaces["net"])
- //if netMode.IsContainer() {
- // if len(portBindings) > 0 {
- // return nil, errors.Errorf("cannot set port bindings on an existing container network namespace")
- // }
- //}
-
- // TODO Remove when done with namespaces for realz
- // Setting a default for IPC to get this working
- s.IpcNS = specgen.Namespace{
- NSMode: specgen.Private,
- Value: "",
+ for k, v := range map[string]*specgen.Namespace{
+ c.IPC: &s.IpcNS,
+ c.PID: &s.PidNS,
+ c.UTS: &s.UtsNS,
+ c.CGroupsNS: &s.CgroupNS,
+ } {
+ if k != "" {
+ *v, err = specgen.ParseNamespace(k)
+ if err != nil {
+ return err
+ }
+ }
+ }
+ // userns must be treated differently
+ if c.UserNS != "" {
+ s.UserNS, err = specgen.ParseUserNamespace(c.UserNS)
+ if err != nil {
+ return err
+ }
+ }
+ if c.Net != nil {
+ s.NetNS = c.Net.Network
}
// TODO this is going to have to be done the libpod/server end of things
@@ -403,11 +376,13 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
}
// SHM Size
- shmSize, err := units.FromHumanSize(c.ShmSize)
- if err != nil {
- return errors.Wrapf(err, "unable to translate --shm-size")
+ if c.ShmSize != "" {
+ shmSize, err := units.FromHumanSize(c.ShmSize)
+ if err != nil {
+ return errors.Wrapf(err, "unable to translate --shm-size")
+ }
+ s.ShmSize = &shmSize
}
- s.ShmSize = &shmSize
s.HostAdd = c.Net.AddHosts
s.UseImageResolvConf = c.Net.UseImageResolvConf
s.DNSServers = c.Net.DNSServers
diff --git a/cmd/podman/containers/create.go b/cmd/podman/containers/create.go
index 8c0e40122..8f140e2b8 100644
--- a/cmd/podman/containers/create.go
+++ b/cmd/podman/containers/create.go
@@ -131,6 +131,10 @@ func createInit(c *cobra.Command) error {
logrus.Warn("setting security options with --privileged has no effect")
}
+ if c.Flag("shm-size").Changed {
+ cliVals.ShmSize = c.Flag("shm-size").Value.String()
+ }
+
if (c.Flag("dns").Changed || c.Flag("dns-opt").Changed || c.Flag("dns-search").Changed) && (cliVals.Net.Network.NSMode == specgen.NoNetwork || cliVals.Net.Network.IsContainer()) {
return errors.Errorf("conflicting options: dns and the network mode.")
}
@@ -145,6 +149,21 @@ func createInit(c *cobra.Command) error {
if c.Flag("no-hosts").Changed && c.Flag("add-host").Changed {
return errors.Errorf("--no-hosts and --add-host cannot be set together")
}
+ if c.Flag("userns").Changed {
+ cliVals.UserNS = c.Flag("userns").Value.String()
+ }
+ if c.Flag("ipc").Changed {
+ cliVals.IPC = c.Flag("ipc").Value.String()
+ }
+ if c.Flag("uts").Changed {
+ cliVals.UTS = c.Flag("uts").Value.String()
+ }
+ if c.Flag("pid").Changed {
+ cliVals.PID = c.Flag("pid").Value.String()
+ }
+ if c.Flag("cgroupns").Changed {
+ cliVals.CGroupsNS = c.Flag("cgroupns").Value.String()
+ }
// Docker-compatibility: the "-h" flag for run/create is reserved for
// the hostname (see https://github.com/containers/libpod/issues/1367).
diff --git a/pkg/specgen/container_validate.go b/pkg/specgen/container_validate.go
index df9c77cbc..56c1a7ea9 100644
--- a/pkg/specgen/container_validate.go
+++ b/pkg/specgen/container_validate.go
@@ -54,7 +54,7 @@ func (s *SpecGenerator) Validate() error {
}
// shmsize conflicts with IPC namespace
if s.ContainerStorageConfig.ShmSize != nil && !s.ContainerStorageConfig.IpcNS.IsPrivate() {
- return errors.New("cannot set shmsize when creating an IPC namespace")
+ return errors.New("cannot set shmsize when running in the host IPC Namespace")
}
//
@@ -129,7 +129,7 @@ func (s *SpecGenerator) Validate() error {
if err := s.CgroupNS.validate(); err != nil {
return err
}
- if err := s.UserNS.validate(); err != nil {
+ if err := validateUserNS(&s.UserNS); err != nil {
return err
}
diff --git a/pkg/specgen/generate/namespaces.go b/pkg/specgen/generate/namespaces.go
index 4ec1e859c..2aaeb9513 100644
--- a/pkg/specgen/generate/namespaces.go
+++ b/pkg/specgen/generate/namespaces.go
@@ -58,8 +58,7 @@ func GetDefaultNamespaceMode(nsType string, cfg *config.Config, pod *libpod.Pod)
case "uts":
return specgen.ParseNamespace(cfg.Containers.UTSNS)
case "user":
- // TODO: This may not work for --userns=auto
- return specgen.ParseNamespace(cfg.Containers.UserNS)
+ return specgen.ParseUserNamespace(cfg.Containers.UserNS)
case "net":
ns, _, err := specgen.ParseNetworkNamespace(cfg.Containers.NetNS)
return ns, err
diff --git a/pkg/specgen/namespaces.go b/pkg/specgen/namespaces.go
index 4f35b31bf..fffbd6d9e 100644
--- a/pkg/specgen/namespaces.go
+++ b/pkg/specgen/namespaces.go
@@ -33,6 +33,11 @@ const (
// Slirp indicates that a slirp4netns network stack should
// be used
Slirp NamespaceMode = "slirp4netns"
+ // KeepId indicates a user namespace to keep the owner uid inside
+ // of the namespace itself
+ KeepID NamespaceMode = "keep-id"
+ // KeepId indicates to automatically create a user namespace
+ Auto NamespaceMode = "auto"
)
// Namespace describes the namespace
@@ -71,6 +76,16 @@ func (n *Namespace) IsPod() bool {
func (n *Namespace) IsPrivate() bool {
return n.NSMode == Private
}
+func validateUserNS(n *Namespace) error {
+ if n == nil {
+ return nil
+ }
+ switch n.NSMode {
+ case Auto, KeepID:
+ return nil
+ }
+ return n.validate()
+}
func validateNetNS(n *Namespace) error {
if n == nil {
@@ -158,6 +173,30 @@ func ParseNamespace(ns string) (Namespace, error) {
return toReturn, nil
}
+// ParseUserNamespace parses a user namespace specification in string
+// form.
+func ParseUserNamespace(ns string) (Namespace, error) {
+ toReturn := Namespace{}
+ switch {
+ case ns == "auto":
+ toReturn.NSMode = Auto
+ return toReturn, nil
+ case strings.HasPrefix(ns, "auto:"):
+ split := strings.SplitN(ns, ":", 2)
+ if len(split) != 2 {
+ return toReturn, errors.Errorf("invalid setting for auto: mode")
+ }
+ toReturn.NSMode = KeepID
+ toReturn.Value = split[1]
+ return toReturn, nil
+ case ns == "keep-id":
+ toReturn.NSMode = KeepID
+ toReturn.NSMode = FromContainer
+ return toReturn, nil
+ }
+ return ParseNamespace(ns)
+}
+
// ParseNetworkNamespace parses a network namespace specification in string
// form.
// Returns a namespace and (optionally) a list of CNI networks to join.
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-09-26 21:35:46 +0000