Compare commits

...

14 Commits

Author SHA1 Message Date
David Calavera f8f912ac2a Bump to version 1.7.1
Signed-off-by: David Calavera <david.calavera@gmail.com>
2015-07-02 14:38:22 -07:00
David Calavera cc712e6de4 Fix implicit DeviceMapper selection
DeviceMapper must be explicitly selected because the Docker binary might not be linked to the right devmapper library.

With this change, Docker fails fast if the driver detection finds the devicemapper directory but the driver is not the default option.
The option `override_udev_sync_check` doesn't make sense anymore, since the user must be explicit to select devicemapper, so it's being removed.
Docker fails to use devicemapper only if Docker has been built statically unless the option was explicit.

Signed-off-by: David Calavera <david.calavera@gmail.com>
2015-07-02 14:37:28 -07:00
Alessandro Boch e698770d40 Stats API to retrieve nw stats from libnetwork
- Container networking statistics are no longer
  retrievable from libcontainer after the introduction
  of libnetwork. This change adds the missing code
  for docker daemon to retireve the nw stats from
  Endpoint.

Signed-off-by: Alessandro Boch <aboch@docker.com>
2015-07-02 13:36:14 -07:00
Antonio Murdaca ac6a9ce95f Fix regression in containers attach/wsattach api, return not found before hijacking
Signed-off-by: Antonio Murdaca <runcom@linux.com>
2015-07-01 10:28:16 -07:00
Jana Radhakrishnan b03b8a23d2 Vendoring libnetwork
Commit id: 3daf67270570c1e07e3e3184d46a10f0c5d66f87

Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
2015-07-01 10:08:02 -07:00
Madhu Venugopal 34815f3fa6 fixed incorrect assumption on --bridge=none treated as disable network
libnetwork host, none and bridge driver initialization is incorrectly
disabled if the daemon flag --bridge=none. The expected behavior of
setting --bridge as none is to disable the bridge driver alone and let
all other modes to be operational.

Signed-off-by: Madhu Venugopal <madhu@docker.com>
Signed-off-by: David Calavera <david.calavera@gmail.com>

Conflicts:
	daemon/container_linux.go
	daemon/daemon.go
	daemon/daemon_unix.go
	daemon/daemon_windows.go
2015-06-30 16:00:04 -07:00
Ankush Agarwal 7e8cceb05a Validate Port specifications on daemon side
Fixes #14230

Signed-off-by: Ankush Agarwal <ankushagarwal11@gmail.com>
2015-06-30 13:02:01 -07:00
David Calavera 72d9ba5ac9 Default process user to container config user.
Signed-off-by: David Calavera <david.calavera@gmail.com>
2015-06-29 14:39:12 -07:00
Antonio Murdaca fcc44248ef Error out if client API version is too old
Signed-off-by: Antonio Murdaca <runcom@linux.com>
2015-06-29 11:13:48 -07:00
Matt Moore c090014053 Unconditionally add AuthTransport.
Today, endpoints implementing v2 cannot properly fallback to v1 because the underlying transport that deals with authentication (Basic / Token) doesn't get annotated.

This doesn't affect DockerHub because the DockerHub endpoint appears as 'https://index.docker.io/v1/' (in .dockercfg), and the 'v1' tricks this logic just long enough that the transport is always annotated for DockerHub accesses.

Signed-off-by: Matt Moore <mattmoor@google.com>
2015-06-29 11:10:50 -07:00
Josh Hawn 6906fb0693 [api, builder] Fix build auth config
With the 1.7 release, we introduced a change to how we store registry
credentials, but the build API endpoint did not expect a change in the format
of that file. This patch fixes this problem so that you can again pull private
images during `docker build`.

Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
2015-06-29 11:10:19 -07:00
Brian Goff 50fe5319c4 Fix unmarshalling of Command and Entrypoint
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2015-06-29 11:09:05 -07:00
Stephen J Day 53b80bdc9c Attempt to protect on disk image store with mutex
During `(*Graph).Register, there was no protection on adding new layers
concurrently. In some cases, this resulted in corruption of a layer by creating
the directory but not the underlying data. This manifested in several different
IO errors reported in the client.  This attempts to fix this by adding a mutex
by Image ID to protect the Register operation.

We do not completely understand the root cause of this corruption other than
the result is somehow tied to this particular function.  This fix has been
confirmed to address the issue through testing.

Unfortunately, this fix does not address existing corruption. The user will
have to remove and re-pull the corrupt layer to stop the error from happening
in the future. This change only ensures that the layer will not become corrupt.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2015-06-29 10:43:56 -07:00
Jessie Frazelle 44a8cf337b Merge pull request #13528 from jfrazelle/bump_v1.7.0
Bump v1.7.0
2015-06-18 11:00:07 -07:00
56 changed files with 1213 additions and 281 deletions
+25
View File
@@ -1,5 +1,30 @@
# Changelog
## 1.7.1 (2015-07-02)
#### Runtime
- Fix default user spawning exec process with `docker exec`
- Make `--bridge=none` to not configure the network bridge
- Publish networking stats properly
- Fix implicit devicemapper selection with static binaries
- Fix socket connections that hanged internitently
- Fix bridge interface creation on CentOS/RHEL 6.6
- Fix local dns lookups added to resolv.conf
#### Remote API
- Fix unmarshalling of Command and Entrypoint
- Set limit for minimum client version supported
- Validate port specification
- Return proper errors when attach/reattach fail
#### Distribution
- Fix pulling private images
- Fix fallback between registry V2 and V1
## 1.7.0 (2015-06-16)
#### Runtime
+1 -1
View File
@@ -1 +1 @@
1.7.0
1.7.1-rc1
+1 -1
View File
@@ -138,7 +138,7 @@ func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.Rea
if err != nil {
return err
}
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), params)
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.Version, path), params)
if err != nil {
return err
}
+1 -1
View File
@@ -53,7 +53,7 @@ func (cli *DockerCli) clientRequest(method, path string, in io.Reader, headers m
if expectedPayload && in == nil {
in = bytes.NewReader([]byte{})
}
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), in)
req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.Version, path), in)
if err != nil {
return nil, "", -1, err
}
+1 -1
View File
@@ -26,7 +26,7 @@ func (cli *DockerCli) CmdVersion(args ...string) error {
if dockerversion.VERSION != "" {
fmt.Fprintf(cli.out, "Client version: %s\n", dockerversion.VERSION)
}
fmt.Fprintf(cli.out, "Client API version: %s\n", api.APIVERSION)
fmt.Fprintf(cli.out, "Client API version: %s\n", api.Version)
fmt.Fprintf(cli.out, "Go version (client): %s\n", runtime.Version())
if dockerversion.GITCOMMIT != "" {
fmt.Fprintf(cli.out, "Git commit (client): %s\n", dockerversion.GITCOMMIT)
+8 -2
View File
@@ -16,8 +16,14 @@ import (
// Common constants for daemon and client.
const (
APIVERSION version.Version = "1.19" // Current REST API version
DefaultDockerfileName string = "Dockerfile" // Default filename with Docker commands, read by docker build
// Current REST API version
Version version.Version = "1.19"
// Minimun REST API version supported
MinVersion version.Version = "1.12"
// Default filename with Docker commands, read by docker build
DefaultDockerfileName string = "Dockerfile"
)
type ByPrivatePort []types.Port
+29 -17
View File
@@ -247,7 +247,7 @@ func (s *Server) postAuth(version version.Version, w http.ResponseWriter, r *htt
func (s *Server) getVersion(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
v := &types.Version{
Version: dockerversion.VERSION,
ApiVersion: api.APIVERSION,
ApiVersion: api.Version,
GitCommit: dockerversion.GITCOMMIT,
GoVersion: runtime.Version(),
Os: runtime.GOOS,
@@ -1101,6 +1101,11 @@ func (s *Server) postContainersAttach(version version.Version, w http.ResponseWr
return fmt.Errorf("Missing parameter")
}
cont, err := s.daemon.Get(vars["name"])
if err != nil {
return err
}
inStream, outStream, err := hijackServer(w)
if err != nil {
return err
@@ -1124,7 +1129,7 @@ func (s *Server) postContainersAttach(version version.Version, w http.ResponseWr
Multiplex: version.GreaterThanOrEqualTo("1.6"),
}
if err := s.daemon.ContainerAttachWithLogs(vars["name"], attachWithLogsConfig); err != nil {
if err := s.daemon.ContainerAttachWithLogs(cont, attachWithLogsConfig); err != nil {
fmt.Fprintf(outStream, "Error attaching: %s\n", err)
}
@@ -1139,6 +1144,11 @@ func (s *Server) wsContainersAttach(version version.Version, w http.ResponseWrit
return fmt.Errorf("Missing parameter")
}
cont, err := s.daemon.Get(vars["name"])
if err != nil {
return err
}
h := websocket.Handler(func(ws *websocket.Conn) {
defer ws.Close()
@@ -1150,7 +1160,7 @@ func (s *Server) wsContainersAttach(version version.Version, w http.ResponseWrit
Stream: boolValue(r, "stream"),
}
if err := s.daemon.ContainerWsAttachWithLogs(vars["name"], wsAttachWithLogsConfig); err != nil {
if err := s.daemon.ContainerWsAttachWithLogs(cont, wsAttachWithLogsConfig); err != nil {
logrus.Errorf("Error attaching websocket: %s", err)
}
})
@@ -1207,18 +1217,17 @@ func (s *Server) getImagesByName(version version.Version, w http.ResponseWriter,
func (s *Server) postBuild(version version.Version, w http.ResponseWriter, r *http.Request, vars map[string]string) error {
var (
authConfig = &cliconfig.AuthConfig{}
configFileEncoded = r.Header.Get("X-Registry-Config")
configFile = &cliconfig.ConfigFile{}
buildConfig = builder.NewBuildConfig()
authConfigs = map[string]cliconfig.AuthConfig{}
authConfigsEncoded = r.Header.Get("X-Registry-Config")
buildConfig = builder.NewBuildConfig()
)
if configFileEncoded != "" {
configFileJson := base64.NewDecoder(base64.URLEncoding, strings.NewReader(configFileEncoded))
if err := json.NewDecoder(configFileJson).Decode(configFile); err != nil {
if authConfigsEncoded != "" {
authConfigsJSON := base64.NewDecoder(base64.URLEncoding, strings.NewReader(authConfigsEncoded))
if err := json.NewDecoder(authConfigsJSON).Decode(&authConfigs); err != nil {
// for a pull it is not an error if no auth was given
// to increase compatibility with the existing api it is defaulting to be empty
configFile = &cliconfig.ConfigFile{}
// to increase compatibility with the existing api it is defaulting
// to be empty.
}
}
@@ -1245,8 +1254,7 @@ func (s *Server) postBuild(version version.Version, w http.ResponseWriter, r *ht
buildConfig.SuppressOutput = boolValue(r, "q")
buildConfig.NoCache = boolValue(r, "nocache")
buildConfig.ForceRemove = boolValue(r, "forcerm")
buildConfig.AuthConfig = authConfig
buildConfig.ConfigFile = configFile
buildConfig.AuthConfigs = authConfigs
buildConfig.MemorySwap = int64ValueOrZero(r, "memswap")
buildConfig.Memory = int64ValueOrZero(r, "memory")
buildConfig.CpuShares = int64ValueOrZero(r, "cpushares")
@@ -1475,14 +1483,18 @@ func makeHttpHandler(logging bool, localMethod string, localRoute string, handle
}
version := version.Version(mux.Vars(r)["version"])
if version == "" {
version = api.APIVERSION
version = api.Version
}
if corsHeaders != "" {
writeCorsHeaders(w, r, corsHeaders)
}
if version.GreaterThan(api.APIVERSION) {
http.Error(w, fmt.Errorf("client and server don't have same version (client API version: %s, server API version: %s)", version, api.APIVERSION).Error(), http.StatusBadRequest)
if version.GreaterThan(api.Version) {
http.Error(w, fmt.Errorf("client is newer than server (client API version: %s, server API version: %s)", version, api.Version).Error(), http.StatusBadRequest)
return
}
if version.LessThan(api.MinVersion) {
http.Error(w, fmt.Errorf("client is too old, minimum supported API version is %s, please upgrade your client to a newer version", api.MinVersion).Error(), http.StatusBadRequest)
return
}
+2 -2
View File
@@ -98,8 +98,8 @@ type Builder struct {
// the final configs of the Dockerfile but dont want the layers
disableCommit bool
AuthConfig *cliconfig.AuthConfig
ConfigFile *cliconfig.ConfigFile
// Registry server auth configs used to pull images when handling `FROM`.
AuthConfigs map[string]cliconfig.AuthConfig
// Deprecated, original writer used for ImagePull. To be removed.
OutOld io.Writer
+9 -4
View File
@@ -21,6 +21,7 @@ import (
"github.com/Sirupsen/logrus"
"github.com/docker/docker/builder/parser"
"github.com/docker/docker/cliconfig"
"github.com/docker/docker/daemon"
"github.com/docker/docker/graph"
imagepkg "github.com/docker/docker/image"
@@ -446,15 +447,19 @@ func (b *Builder) pullImage(name string) (*imagepkg.Image, error) {
tag = "latest"
}
pullRegistryAuth := b.AuthConfig
if len(b.ConfigFile.AuthConfigs) > 0 {
pullRegistryAuth := &cliconfig.AuthConfig{}
if len(b.AuthConfigs) > 0 {
// The request came with a full auth config file, we prefer to use that
repoInfo, err := b.Daemon.RegistryService.ResolveRepository(remote)
if err != nil {
return nil, err
}
resolvedAuth := registry.ResolveAuthConfig(b.ConfigFile, repoInfo.Index)
pullRegistryAuth = &resolvedAuth
resolvedConfig := registry.ResolveAuthConfig(
&cliconfig.ConfigFile{AuthConfigs: b.AuthConfigs},
repoInfo.Index,
)
pullRegistryAuth = &resolvedConfig
}
imagePullConfig := &graph.ImagePullConfig{
+4 -7
View File
@@ -53,8 +53,7 @@ type Config struct {
CpuSetCpus string
CpuSetMems string
CgroupParent string
AuthConfig *cliconfig.AuthConfig
ConfigFile *cliconfig.ConfigFile
AuthConfigs map[string]cliconfig.AuthConfig
Stdout io.Writer
Context io.ReadCloser
@@ -79,9 +78,8 @@ func (b *Config) WaitCancelled() <-chan struct{} {
func NewBuildConfig() *Config {
return &Config{
AuthConfig: &cliconfig.AuthConfig{},
ConfigFile: &cliconfig.ConfigFile{},
cancelled: make(chan struct{}),
AuthConfigs: map[string]cliconfig.AuthConfig{},
cancelled: make(chan struct{}),
}
}
@@ -160,8 +158,7 @@ func Build(d *daemon.Daemon, buildConfig *Config) error {
Pull: buildConfig.Pull,
OutOld: buildConfig.Stdout,
StreamFormatter: sf,
AuthConfig: buildConfig.AuthConfig,
ConfigFile: buildConfig.ConfigFile,
AuthConfigs: buildConfig.AuthConfigs,
dockerfileName: buildConfig.DockerfileName,
cpuShares: buildConfig.CpuShares,
cpuPeriod: buildConfig.CpuPeriod,
+2 -12
View File
@@ -14,12 +14,7 @@ type ContainerAttachWithLogsConfig struct {
Multiplex bool
}
func (daemon *Daemon) ContainerAttachWithLogs(name string, c *ContainerAttachWithLogsConfig) error {
container, err := daemon.Get(name)
if err != nil {
return err
}
func (daemon *Daemon) ContainerAttachWithLogs(container *Container, c *ContainerAttachWithLogsConfig) error {
var errStream io.Writer
if !container.Config.Tty && c.Multiplex {
@@ -51,11 +46,6 @@ type ContainerWsAttachWithLogsConfig struct {
Logs, Stream bool
}
func (daemon *Daemon) ContainerWsAttachWithLogs(name string, c *ContainerWsAttachWithLogsConfig) error {
container, err := daemon.Get(name)
if err != nil {
return err
}
func (daemon *Daemon) ContainerWsAttachWithLogs(container *Container, c *ContainerWsAttachWithLogsConfig) error {
return container.AttachWithLogs(c.InStream, c.OutStream, c.ErrStream, c.Logs, c.Stream)
}
+18 -18
View File
@@ -14,24 +14,24 @@ const (
// CommonConfig defines the configuration of a docker daemon which are
// common across platforms.
type CommonConfig struct {
AutoRestart bool
Context map[string][]string
CorsHeaders string
DisableNetwork bool
Dns []string
DnsSearch []string
EnableCors bool
ExecDriver string
ExecOptions []string
ExecRoot string
GraphDriver string
GraphOptions []string
Labels []string
LogConfig runconfig.LogConfig
Mtu int
Pidfile string
Root string
TrustKeyPath string
AutoRestart bool
Context map[string][]string
CorsHeaders string
DisableBridge bool
Dns []string
DnsSearch []string
EnableCors bool
ExecDriver string
ExecOptions []string
ExecRoot string
GraphDriver string
GraphOptions []string
Labels []string
LogConfig runconfig.LogConfig
Mtu int
Pidfile string
Root string
TrustKeyPath string
}
// InstallCommonFlags adds command-line options to the top-level flag parser for
+7 -6
View File
@@ -469,7 +469,7 @@ func (container *Container) buildJoinOptions() ([]libnetwork.EndpointOption, err
logrus.Error(err)
}
if c != nil && !container.daemon.config.DisableNetwork && container.hostConfig.NetworkMode.IsPrivate() {
if c != nil && !container.daemon.config.DisableBridge && container.hostConfig.NetworkMode.IsPrivate() {
logrus.Debugf("Update /etc/hosts of %s for alias %s with ip %s", c.ID, ref.Name, container.NetworkSettings.IPAddress)
joinOptions = append(joinOptions, libnetwork.JoinOptionParentUpdate(c.NetworkSettings.EndpointID, ref.Name, container.NetworkSettings.IPAddress))
if c.NetworkSettings.EndpointID != "" {
@@ -753,6 +753,11 @@ func (container *Container) AllocateNetwork() error {
return nil
}
if mode.IsBridge() && container.daemon.config.DisableBridge {
container.Config.NetworkDisabled = true
return nil
}
var err error
n, err := container.daemon.netController.NetworkByName(string(mode))
@@ -817,10 +822,6 @@ func (container *Container) initializeNetworking() error {
return nil
}
if container.daemon.config.DisableNetwork {
container.Config.NetworkDisabled = true
}
if container.hostConfig.NetworkMode.IsHost() {
container.Config.Hostname, err = os.Hostname()
if err != nil {
@@ -939,7 +940,7 @@ func (container *Container) getNetworkedContainer() (*Container, error) {
}
func (container *Container) ReleaseNetwork() {
if container.hostConfig.NetworkMode.IsContainer() || container.daemon.config.DisableNetwork {
if container.hostConfig.NetworkMode.IsContainer() || container.Config.NetworkDisabled {
return
}
+30 -15
View File
@@ -32,6 +32,7 @@ import (
"github.com/docker/docker/daemon/network"
"github.com/docker/docker/graph"
"github.com/docker/docker/image"
"github.com/docker/docker/nat"
"github.com/docker/docker/pkg/archive"
"github.com/docker/docker/pkg/broadcastwriter"
"github.com/docker/docker/pkg/fileutils"
@@ -682,7 +683,7 @@ func NewDaemon(config *Config, registryService *registry.Service) (daemon *Daemo
if !config.Bridge.EnableIPTables && config.Bridge.EnableIPMasq {
config.Bridge.EnableIPMasq = false
}
config.DisableNetwork = config.Bridge.Iface == disableNetworkBridge
config.DisableBridge = config.Bridge.Iface == disableNetworkBridge
// Check that the system is supported and we have sufficient privileges
if runtime.GOOS != "linux" {
@@ -819,11 +820,9 @@ func NewDaemon(config *Config, registryService *registry.Service) (daemon *Daemo
return nil, fmt.Errorf("Couldn't create Tag store: %s", err)
}
if !config.DisableNetwork {
d.netController, err = initNetworkController(config)
if err != nil {
return nil, fmt.Errorf("Error initializing network controller: %v", err)
}
d.netController, err = initNetworkController(config)
if err != nil {
return nil, fmt.Errorf("Error initializing network controller: %v", err)
}
graphdbPath := path.Join(config.Root, "linkgraph.db")
@@ -911,12 +910,22 @@ func initNetworkController(config *Config) (libnetwork.NetworkController, error)
return nil, fmt.Errorf("Error creating default \"host\" network: %v", err)
}
// Initialize default driver "bridge"
if !config.DisableBridge {
// Initialize default driver "bridge"
if err := initBridgeDriver(controller, config); err != nil {
return nil, err
}
}
return controller, nil
}
func initBridgeDriver(controller libnetwork.NetworkController, config *Config) error {
option := options.Generic{
"EnableIPForwarding": config.Bridge.EnableIPForward}
if err := controller.ConfigureNetworkDriver("bridge", options.Generic{netlabel.GenericData: option}); err != nil {
return nil, fmt.Errorf("Error initializing bridge driver: %v", err)
return fmt.Errorf("Error initializing bridge driver: %v", err)
}
netOption := options.Generic{
@@ -931,7 +940,7 @@ func initNetworkController(config *Config) (libnetwork.NetworkController, error)
if config.Bridge.IP != "" {
ip, bipNet, err := net.ParseCIDR(config.Bridge.IP)
if err != nil {
return nil, err
return err
}
bipNet.IP = ip
@@ -941,7 +950,7 @@ func initNetworkController(config *Config) (libnetwork.NetworkController, error)
if config.Bridge.FixedCIDR != "" {
_, fCIDR, err := net.ParseCIDR(config.Bridge.FixedCIDR)
if err != nil {
return nil, err
return err
}
netOption["FixedCIDR"] = fCIDR
@@ -950,7 +959,7 @@ func initNetworkController(config *Config) (libnetwork.NetworkController, error)
if config.Bridge.FixedCIDRv6 != "" {
_, fCIDRv6, err := net.ParseCIDR(config.Bridge.FixedCIDRv6)
if err != nil {
return nil, err
return err
}
netOption["FixedCIDRv6"] = fCIDRv6
@@ -970,16 +979,15 @@ func initNetworkController(config *Config) (libnetwork.NetworkController, error)
}
// Initialize default network on "bridge" with the same name
_, err = controller.NewNetwork("bridge", "bridge",
_, err := controller.NewNetwork("bridge", "bridge",
libnetwork.NetworkOptionGeneric(options.Generic{
netlabel.GenericData: netOption,
netlabel.EnableIPv6: config.Bridge.EnableIPv6,
}))
if err != nil {
return nil, fmt.Errorf("Error creating default \"bridge\" network: %v", err)
return fmt.Errorf("Error creating default \"bridge\" network: %v", err)
}
return controller, nil
return nil
}
func (daemon *Daemon) Shutdown() error {
@@ -1190,6 +1198,13 @@ func (daemon *Daemon) verifyHostConfig(hostConfig *runconfig.HostConfig) ([]stri
return warnings, nil
}
for port := range hostConfig.PortBindings {
_, portStr := nat.SplitProtoPort(string(port))
if _, err := nat.ParsePort(portStr); err != nil {
return warnings, fmt.Errorf("Invalid port specification: %s", portStr)
}
}
if hostConfig.LxcConf.Len() > 0 && !strings.Contains(daemon.ExecutionDriver().Name(), "lxc") {
return warnings, fmt.Errorf("Cannot use --lxc-conf with execdriver: %s", daemon.ExecutionDriver().Name())
}
+6 -2
View File
@@ -109,7 +109,6 @@ func (d *Daemon) getActiveContainer(name string) (*Container, error) {
}
func (d *Daemon) ContainerExecCreate(config *runconfig.ExecConfig) (string, error) {
// Not all drivers support Exec (LXC for example)
if err := checkExecSupport(d.execDriver.Name()); err != nil {
return "", err
@@ -123,11 +122,16 @@ func (d *Daemon) ContainerExecCreate(config *runconfig.ExecConfig) (string, erro
cmd := runconfig.NewCommand(config.Cmd...)
entrypoint, args := d.getEntrypointAndArgs(runconfig.NewEntrypoint(), cmd)
user := config.User
if len(user) == 0 {
user = container.Config.User
}
processConfig := execdriver.ProcessConfig{
Tty: config.Tty,
Entrypoint: entrypoint,
Arguments: args,
User: config.User,
User: user,
}
execConfig := &execConfig{
+26 -38
View File
@@ -30,8 +30,7 @@ var (
DefaultDataLoopbackSize int64 = 100 * 1024 * 1024 * 1024
DefaultMetaDataLoopbackSize int64 = 2 * 1024 * 1024 * 1024
DefaultBaseFsSize uint64 = 10 * 1024 * 1024 * 1024
DefaultThinpBlockSize uint32 = 128 // 64K = 128 512b sectors
DefaultUdevSyncOverride bool = false
DefaultThinpBlockSize uint32 = 128 // 64K = 128 512b sectors
MaxDeviceId int = 0xffffff // 24 bit, pool limit
DeviceIdMapSz int = (MaxDeviceId + 1) / 8
// We retry device removal so many a times that even error messages
@@ -90,22 +89,21 @@ type DeviceSet struct {
deviceIdMap []byte
// Options
dataLoopbackSize int64
metaDataLoopbackSize int64
baseFsSize uint64
filesystem string
mountOptions string
mkfsArgs []string
dataDevice string // block or loop dev
dataLoopFile string // loopback file, if used
metadataDevice string // block or loop dev
metadataLoopFile string // loopback file, if used
doBlkDiscard bool
thinpBlockSize uint32
thinPoolDevice string
Transaction `json:"-"`
overrideUdevSyncCheck bool
deferredRemove bool // use deferred removal
dataLoopbackSize int64
metaDataLoopbackSize int64
baseFsSize uint64
filesystem string
mountOptions string
mkfsArgs []string
dataDevice string // block or loop dev
dataLoopFile string // loopback file, if used
metadataDevice string // block or loop dev
metadataLoopFile string // loopback file, if used
doBlkDiscard bool
thinpBlockSize uint32
thinPoolDevice string
Transaction `json:"-"`
deferredRemove bool // use deferred removal
}
type DiskUsage struct {
@@ -1033,10 +1031,7 @@ func (devices *DeviceSet) initDevmapper(doInit bool) error {
// https://github.com/docker/docker/issues/4036
if supported := devicemapper.UdevSetSyncSupport(true); !supported {
logrus.Errorf("Udev sync is not supported. This will lead to unexpected behavior, data loss and errors. For more information, see https://docs.docker.com/reference/commandline/cli/#daemon-storage-driver-option")
if !devices.overrideUdevSyncCheck {
return graphdriver.ErrNotSupported
}
logrus.Warn("Udev sync is not supported. This will lead to unexpected behavior, data loss and errors. For more information, see https://docs.docker.com/reference/commandline/cli/#daemon-storage-driver-option")
}
if err := os.MkdirAll(devices.metadataDir(), 0700); err != nil && !os.IsExist(err) {
@@ -1704,16 +1699,15 @@ func NewDeviceSet(root string, doInit bool, options []string) (*DeviceSet, error
devicemapper.SetDevDir("/dev")
devices := &DeviceSet{
root: root,
MetaData: MetaData{Devices: make(map[string]*DevInfo)},
dataLoopbackSize: DefaultDataLoopbackSize,
metaDataLoopbackSize: DefaultMetaDataLoopbackSize,
baseFsSize: DefaultBaseFsSize,
overrideUdevSyncCheck: DefaultUdevSyncOverride,
filesystem: "ext4",
doBlkDiscard: true,
thinpBlockSize: DefaultThinpBlockSize,
deviceIdMap: make([]byte, DeviceIdMapSz),
root: root,
MetaData: MetaData{Devices: make(map[string]*DevInfo)},
dataLoopbackSize: DefaultDataLoopbackSize,
metaDataLoopbackSize: DefaultMetaDataLoopbackSize,
baseFsSize: DefaultBaseFsSize,
filesystem: "ext4",
doBlkDiscard: true,
thinpBlockSize: DefaultThinpBlockSize,
deviceIdMap: make([]byte, DeviceIdMapSz),
}
foundBlkDiscard := false
@@ -1770,12 +1764,6 @@ func NewDeviceSet(root string, doInit bool, options []string) (*DeviceSet, error
}
// convert to 512b sectors
devices.thinpBlockSize = uint32(size) >> 9
case "dm.override_udev_sync_check":
devices.overrideUdevSyncCheck, err = strconv.ParseBool(val)
if err != nil {
return nil, err
}
case "dm.use_deferred_removal":
EnableDeferredRemoval, err = strconv.ParseBool(val)
if err != nil {
@@ -13,7 +13,6 @@ func init() {
DefaultDataLoopbackSize = 300 * 1024 * 1024
DefaultMetaDataLoopbackSize = 200 * 1024 * 1024
DefaultBaseFsSize = 300 * 1024 * 1024
DefaultUdevSyncOverride = true
if err := graphtest.InitLoopbacks(); err != nil {
panic(err)
}
+50 -46
View File
@@ -8,6 +8,7 @@ import (
"strings"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/autogen/dockerversion"
"github.com/docker/docker/pkg/archive"
)
@@ -22,9 +23,10 @@ var (
// All registred drivers
drivers map[string]InitFunc
ErrNotSupported = errors.New("driver not supported")
ErrPrerequisites = errors.New("prerequisites for driver not satisfied (wrong filesystem?)")
ErrIncompatibleFS = fmt.Errorf("backing file system is unsupported for this graph driver")
ErrNotSupported = errors.New("driver not supported")
ErrPrerequisites = errors.New("prerequisites for driver not satisfied (wrong filesystem?)")
ErrIncompatibleFS = fmt.Errorf("backing file system is unsupported for this graph driver")
ErrDeviceMapperWithStaticDocker = fmt.Errorf("devicemapper storage driver cannot reliably be used with a statically linked docker binary: please either pick a different storage driver, install a dynamically linked docker binary, or force this unreliable setup anyway by specifying --storage-driver=devicemapper")
)
type InitFunc func(root string, options []string) (Driver, error)
@@ -110,36 +112,35 @@ func New(root string, options []string) (driver Driver, err error) {
}
// Guess for prior driver
priorDrivers := scanPriorDrivers(root)
for _, name := range priority {
if name == "vfs" {
// don't use vfs even if there is state present.
continue
priorDriver, err := scanPriorDrivers(root)
if err != nil {
return nil, err
}
if len(priorDriver) != 0 {
// Do not allow devicemapper when it's not explicit and the Docker binary was built statically.
if staticWithDeviceMapper(priorDriver) {
return nil, ErrDeviceMapperWithStaticDocker
}
for _, prior := range priorDrivers {
// of the state found from prior drivers, check in order of our priority
// which we would prefer
if prior == name {
driver, err = GetDriver(name, root, options)
if err != nil {
// unlike below, we will return error here, because there is prior
// state, and now it is no longer supported/prereq/compatible, so
// something changed and needs attention. Otherwise the daemon's
// images would just "disappear".
logrus.Errorf("[graphdriver] prior storage driver %q failed: %s", name, err)
return nil, err
}
if err := checkPriorDriver(name, root); err != nil {
return nil, err
}
logrus.Infof("[graphdriver] using prior storage driver %q", name)
return driver, nil
}
driver, err = GetDriver(priorDriver, root, options)
if err != nil {
// unlike below, we will return error here, because there is prior
// state, and now it is no longer supported/prereq/compatible, so
// something changed and needs attention. Otherwise the daemon's
// images would just "disappear".
logrus.Errorf("[graphdriver] prior storage driver %q failed: %s", priorDriver, err)
return nil, err
}
logrus.Infof("[graphdriver] using prior storage driver %q", priorDriver)
return driver, nil
}
// Check for priority drivers first
for _, name := range priority {
if staticWithDeviceMapper(name) {
continue
}
driver, err = GetDriver(name, root, options)
if err != nil {
if err == ErrNotSupported || err == ErrPrerequisites || err == ErrIncompatibleFS {
@@ -151,7 +152,10 @@ func New(root string, options []string) (driver Driver, err error) {
}
// Check all registered drivers if no priority driver is found
for _, initFunc := range drivers {
for name, initFunc := range drivers {
if staticWithDeviceMapper(name) {
continue
}
if driver, err = initFunc(root, options); err != nil {
if err == ErrNotSupported || err == ErrPrerequisites || err == ErrIncompatibleFS {
continue
@@ -163,31 +167,31 @@ func New(root string, options []string) (driver Driver, err error) {
return nil, fmt.Errorf("No supported storage backend found")
}
// scanPriorDrivers returns an un-ordered scan of directories of prior storage drivers
func scanPriorDrivers(root string) []string {
priorDrivers := []string{}
// scanPriorDrivers returns a previosly used driver.
// it returns an error when there are several drivers scanned.
func scanPriorDrivers(root string) (string, error) {
var priorDrivers []string
for driver := range drivers {
p := filepath.Join(root, driver)
if _, err := os.Stat(p); err == nil {
if _, err := os.Stat(p); err == nil && driver != "vfs" {
priorDrivers = append(priorDrivers, driver)
}
}
return priorDrivers
}
func checkPriorDriver(name, root string) error {
priorDrivers := []string{}
for _, prior := range scanPriorDrivers(root) {
if prior != name && prior != "vfs" {
if _, err := os.Stat(filepath.Join(root, prior)); err == nil {
priorDrivers = append(priorDrivers, prior)
}
}
if len(priorDrivers) > 1 {
return "", multipleDriversError(root, priorDrivers)
}
if len(priorDrivers) > 0 {
return errors.New(fmt.Sprintf("%q contains other graphdrivers: %s; Please cleanup or explicitly choose storage driver (-s <DRIVER>)", root, strings.Join(priorDrivers, ",")))
if len(priorDrivers) == 0 {
return "", nil
}
return nil
return priorDrivers[0], nil
}
func multipleDriversError(root string, drivers []string) error {
return fmt.Errorf("%q contains several graphdrivers: %s; Please cleanup or explicitly choose storage driver (--storage-driver <DRIVER>)", root, strings.Join(drivers, ", "))
}
func staticWithDeviceMapper(name string) bool {
return name == "devicemapper" && dockerversion.IAMSTATIC == "true"
}
+48
View File
@@ -8,6 +8,7 @@ import (
"github.com/docker/docker/daemon/execdriver"
"github.com/docker/libcontainer"
"github.com/docker/libcontainer/cgroups"
"github.com/docker/libnetwork/sandbox"
)
func (daemon *Daemon) ContainerStats(name string, stream bool, out io.Writer) error {
@@ -19,6 +20,10 @@ func (daemon *Daemon) ContainerStats(name string, stream bool, out io.Writer) er
var preCpuStats types.CpuStats
getStat := func(v interface{}) *types.Stats {
update := v.(*execdriver.ResourceStats)
// Retrieve the nw statistics from libnetwork and inject them in the Stats
if nwStats, err := daemon.getNetworkStats(name); err == nil {
update.Stats.Interfaces = nwStats
}
ss := convertToAPITypes(update.Stats)
ss.PreCpuStats = preCpuStats
ss.MemoryStats.Limit = uint64(update.MemoryLimit)
@@ -118,3 +123,46 @@ func copyBlkioEntry(entries []cgroups.BlkioStatEntry) []types.BlkioStatEntry {
}
return out
}
func (daemon *Daemon) getNetworkStats(name string) ([]*libcontainer.NetworkInterface, error) {
var list []*libcontainer.NetworkInterface
c, err := daemon.Get(name)
if err != nil {
return list, err
}
nw, err := daemon.netController.NetworkByID(c.NetworkSettings.NetworkID)
if err != nil {
return list, err
}
ep, err := nw.EndpointByID(c.NetworkSettings.EndpointID)
if err != nil {
return list, err
}
stats, err := ep.Statistics()
if err != nil {
return list, err
}
// Convert libnetwork nw stats into libcontainer nw stats
for ifName, ifStats := range stats {
list = append(list, convertLnNetworkStats(ifName, ifStats))
}
return list, nil
}
func convertLnNetworkStats(name string, stats *sandbox.InterfaceStatistics) *libcontainer.NetworkInterface {
n := &libcontainer.NetworkInterface{Name: name}
n.RxBytes = stats.RxBytes
n.RxPackets = stats.RxPackets
n.RxErrors = stats.RxErrors
n.RxDropped = stats.RxDropped
n.TxBytes = stats.TxBytes
n.TxPackets = stats.TxPackets
n.TxErrors = stats.TxErrors
n.TxDropped = stats.TxDropped
return n
}
+14 -6
View File
@@ -29,9 +29,10 @@ import (
// A Graph is a store for versioned filesystem images and the relationship between them.
type Graph struct {
Root string
idIndex *truncindex.TruncIndex
driver graphdriver.Driver
Root string
idIndex *truncindex.TruncIndex
driver graphdriver.Driver
imageMutex imageMutex // protect images in driver.
}
// NewGraph instantiates a new graph at the given root path in the filesystem.
@@ -145,6 +146,15 @@ func (graph *Graph) Create(layerData archive.ArchiveReader, containerID, contain
// Register imports a pre-existing image into the graph.
func (graph *Graph) Register(img *image.Image, layerData archive.ArchiveReader) (err error) {
if err := image.ValidateID(img.ID); err != nil {
return err
}
// We need this entire operation to be atomic within the engine. Note that
// this doesn't mean Register is fully safe yet.
graph.imageMutex.Lock(img.ID)
defer graph.imageMutex.Unlock(img.ID)
defer func() {
// If any error occurs, remove the new dir from the driver.
// Don't check for errors since the dir might not have been created.
@@ -153,9 +163,7 @@ func (graph *Graph) Register(img *image.Image, layerData archive.ArchiveReader)
graph.driver.Remove(img.ID)
}
}()
if err := image.ValidateID(img.ID); err != nil {
return err
}
// (This is a convenience to save time. Race conditions are taken care of by os.Rename)
if graph.Exists(img.ID) {
return fmt.Errorf("Image %s already exists", img.ID)
+45
View File
@@ -0,0 +1,45 @@
package graph
import "sync"
// imageMutex provides a lock per image id to protect shared resources in the
// graph. This is only used with registration but should be used when
// manipulating the layer store.
type imageMutex struct {
mus map[string]*sync.Mutex // mutexes by image id.
mu sync.Mutex // protects lock map
// NOTE(stevvooe): The map above will grow to the size of all images ever
// registered during a daemon run. To free these resources, we must
// deallocate after unlock. Doing this safely is non-trivial in the face
// of a very minor leak.
}
// Lock the provided id.
func (im *imageMutex) Lock(id string) {
im.getImageLock(id).Lock()
}
// Unlock the provided id.
func (im *imageMutex) Unlock(id string) {
im.getImageLock(id).Unlock()
}
// getImageLock returns the mutex for the given id. This method will never
// return nil.
func (im *imageMutex) getImageLock(id string) *sync.Mutex {
im.mu.Lock()
defer im.mu.Unlock()
if im.mus == nil { // lazy
im.mus = make(map[string]*sync.Mutex)
}
mu, ok := im.mus[id]
if !ok {
mu = new(sync.Mutex)
im.mus[id] = mu
}
return mu
}
+3 -3
View File
@@ -55,9 +55,9 @@ clone hg code.google.com/p/go.net 84a4013f96e0
clone hg code.google.com/p/gosqlite 74691fb6f837
#get libnetwork packages
clone git github.com/docker/libnetwork b116b5c0d20ee4021297fa92b7db4429a622c044
clone git github.com/vishvananda/netns 5478c060110032f972e86a1f844fdb9a2f008f2c
clone git github.com/vishvananda/netlink 8eb64238879fed52fd51c5b30ad20b928fb4c36c
clone git github.com/docker/libnetwork 3daf67270570c1e07e3e3184d46a10f0c5d66f87
clone git github.com/vishvananda/netns 493029407eeb434d0c2d44e02ea072ff2488d322
clone git github.com/vishvananda/netlink 20397a138846e4d6590e01783ed023ed7e1c38a6
# get distribution packages
clone git github.com/docker/distribution b9eeb328080d367dbde850ec6e94f1e4ac2b5efe
+22
View File
@@ -2,6 +2,7 @@ package main
import (
"bytes"
"net/http"
"os/exec"
"strings"
"time"
@@ -77,3 +78,24 @@ func (s *DockerSuite) TestGetContainersAttachWebsocket(c *check.C) {
c.Fatal("Expected output on websocket to match input")
}
}
// regression gh14320
func (s *DockerSuite) TestPostContainersAttachContainerNotFound(c *check.C) {
status, body, err := sockRequest("POST", "/containers/doesnotexist/attach", nil)
c.Assert(status, check.Equals, http.StatusNotFound)
c.Assert(err, check.IsNil)
expected := "no such id: doesnotexist\n"
if !strings.Contains(string(body), expected) {
c.Fatalf("Expected response body to contain %q", expected)
}
}
func (s *DockerSuite) TestGetContainersWsAttachContainerNotFound(c *check.C) {
status, body, err := sockRequest("GET", "/containers/doesnotexist/attach/ws", nil)
c.Assert(status, check.Equals, http.StatusNotFound)
c.Assert(err, check.IsNil)
expected := "no such id: doesnotexist\n"
if !strings.Contains(string(body), expected) {
c.Fatalf("Expected response body to contain %q", expected)
}
}
@@ -998,6 +998,30 @@ func (s *DockerSuite) TestContainerApiVerifyHeader(c *check.C) {
body.Close()
}
//Issue 14230. daemon should return 500 for invalid port syntax
func (s *DockerSuite) TestContainerApiInvalidPortSyntax(c *check.C) {
config := `{
"Image": "busybox",
"HostConfig": {
"PortBindings": {
"19039;1230": [
{}
]
}
}
}`
res, body, err := sockRequestRaw("POST", "/containers/create", strings.NewReader(config), "application/json")
c.Assert(res.StatusCode, check.Equals, http.StatusInternalServerError)
c.Assert(err, check.IsNil)
b, err := readBody(body)
if err != nil {
c.Fatal(err)
}
c.Assert(strings.Contains(string(b[:]), "Invalid port"), check.Equals, true)
}
// Issue 7941 - test to make sure a "null" in JSON is just ignored.
// W/o this fix a null in JSON would be parsed into a string var as "null"
func (s *DockerSuite) TestContainerApiPostCreateNull(c *check.C) {
@@ -1501,3 +1525,48 @@ func (s *DockerSuite) TestPostContainerStop(c *check.C) {
c.Fatal(err)
}
}
// #14170
func (s *DockerSuite) TestPostContainersCreateWithStringOrSliceEntrypoint(c *check.C) {
config := struct {
Image string
Entrypoint string
Cmd []string
}{"busybox", "echo", []string{"hello", "world"}}
_, _, err := sockRequest("POST", "/containers/create?name=echotest", config)
c.Assert(err, check.IsNil)
out, _ := dockerCmd(c, "start", "-a", "echotest")
c.Assert(strings.TrimSpace(out), check.Equals, "hello world")
config2 := struct {
Image string
Entrypoint []string
Cmd []string
}{"busybox", []string{"echo"}, []string{"hello", "world"}}
_, _, err = sockRequest("POST", "/containers/create?name=echotest2", config2)
c.Assert(err, check.IsNil)
out, _ = dockerCmd(c, "start", "-a", "echotest2")
c.Assert(strings.TrimSpace(out), check.Equals, "hello world")
}
// #14170
func (s *DockerSuite) TestPostContainersCreateWithStringOrSliceCmd(c *check.C) {
config := struct {
Image string
Entrypoint string
Cmd string
}{"busybox", "echo", "hello world"}
_, _, err := sockRequest("POST", "/containers/create?name=echotest", config)
c.Assert(err, check.IsNil)
out, _ := dockerCmd(c, "start", "-a", "echotest")
c.Assert(strings.TrimSpace(out), check.Equals, "hello world")
config2 := struct {
Image string
Cmd []string
}{"busybox", []string{"echo", "hello", "world"}}
_, _, err = sockRequest("POST", "/containers/create?name=echotest2", config2)
c.Assert(err, check.IsNil)
out, _ = dockerCmd(c, "start", "-a", "echotest2")
c.Assert(strings.TrimSpace(out), check.Equals, "hello world")
}
+40
View File
@@ -3,6 +3,8 @@ package main
import (
"encoding/json"
"fmt"
"os/exec"
"strconv"
"strings"
"github.com/docker/docker/api/types"
@@ -33,3 +35,41 @@ func (s *DockerSuite) TestCliStatsNoStreamGetCpu(c *check.C) {
c.Fatalf("docker stats with no-stream get cpu usage failed: was %v", cpuPercent)
}
}
func (s *DockerSuite) TestApiNetworkStats(c *check.C) {
// Run container for 30 secs
out, _ := dockerCmd(c, "run", "-d", "busybox", "top")
id := strings.TrimSpace(out)
err := waitRun(id)
c.Assert(err, check.IsNil)
// Retrieve the container address
contIP := findContainerIP(c, id)
numPings := 10
// Get the container networking stats before and after pinging the container
nwStatsPre := getNetworkStats(c, id)
_, err = exec.Command("ping", contIP, "-c", strconv.Itoa(numPings)).Output()
c.Assert(err, check.IsNil)
nwStatsPost := getNetworkStats(c, id)
// Verify the stats contain at least the expected number of packets (account for ARP)
expRxPkts := 1 + nwStatsPre.RxPackets + uint64(numPings)
expTxPkts := 1 + nwStatsPre.TxPackets + uint64(numPings)
c.Assert(nwStatsPost.TxPackets >= expTxPkts, check.Equals, true,
check.Commentf("Reported less TxPackets than expected. Expected >= %d. Found %d", expTxPkts, nwStatsPost.TxPackets))
c.Assert(nwStatsPost.RxPackets >= expRxPkts, check.Equals, true,
check.Commentf("Reported less Txbytes than expected. Expected >= %d. Found %d", expRxPkts, nwStatsPost.RxPackets))
}
func getNetworkStats(c *check.C, id string) types.Network {
var st *types.Stats
_, body, err := sockRequestRaw("GET", fmt.Sprintf("/containers/%s/stats?stream=false", id), nil, "")
c.Assert(err, check.IsNil)
err = json.NewDecoder(body).Decode(&st)
c.Assert(err, check.IsNil)
return st.Network
}
+33 -2
View File
@@ -3,15 +3,18 @@ package main
import (
"net/http"
"net/http/httputil"
"strconv"
"strings"
"time"
"github.com/docker/docker/api"
"github.com/go-check/check"
)
func (s *DockerSuite) TestApiOptionsRoute(c *check.C) {
status, _, err := sockRequest("OPTIONS", "/", nil)
c.Assert(status, check.Equals, http.StatusOK)
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusOK)
}
func (s *DockerSuite) TestApiGetEnabledCors(c *check.C) {
@@ -26,7 +29,7 @@ func (s *DockerSuite) TestApiGetEnabledCors(c *check.C) {
//c.Assert(res.Header.Get("Access-Control-Allow-Headers"), check.Equals, "Origin, X-Requested-With, Content-Type, Accept, X-Registry-Auth")
}
func (s *DockerSuite) TestVersionStatusCode(c *check.C) {
func (s *DockerSuite) TestApiVersionStatusCode(c *check.C) {
conn, err := sockConn(time.Duration(10 * time.Second))
c.Assert(err, check.IsNil)
@@ -40,3 +43,31 @@ func (s *DockerSuite) TestVersionStatusCode(c *check.C) {
res, err := client.Do(req)
c.Assert(res.StatusCode, check.Equals, http.StatusBadRequest)
}
func (s *DockerSuite) TestApiClientVersionNewerThanServer(c *check.C) {
v := strings.Split(string(api.Version), ".")
vMinInt, err := strconv.Atoi(v[1])
c.Assert(err, check.IsNil)
vMinInt++
v[1] = strconv.Itoa(vMinInt)
version := strings.Join(v, ".")
status, body, err := sockRequest("GET", "/v"+version+"/version", nil)
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusBadRequest)
c.Assert(len(string(body)), check.Not(check.Equals), 0) // Expected not empty body
}
func (s *DockerSuite) TestApiClientVersionOldNotSupported(c *check.C) {
v := strings.Split(string(api.MinVersion), ".")
vMinInt, err := strconv.Atoi(v[1])
c.Assert(err, check.IsNil)
vMinInt--
v[1] = strconv.Itoa(vMinInt)
version := strings.Join(v, ".")
status, body, err := sockRequest("GET", "/v"+version+"/version", nil)
c.Assert(err, check.IsNil)
c.Assert(status, check.Equals, http.StatusBadRequest)
c.Assert(len(string(body)), check.Not(check.Equals), 0) // Expected not empty body
}
+6 -1
View File
@@ -1207,7 +1207,12 @@ func (s *DockerDaemonSuite) TestRunContainerWithBridgeNone(c *check.C) {
out, err := s.d.Cmd("run", "--rm", "busybox", "ip", "l")
c.Assert(err, check.IsNil, check.Commentf("Output: %s", out))
c.Assert(strings.Contains(out, "eth0"), check.Equals, false,
check.Commentf("There shouldn't be eth0 in container when network is disabled: %s", out))
check.Commentf("There shouldn't be eth0 in container in default(bridge) mode when bridge network is disabled: %s", out))
out, err = s.d.Cmd("run", "--rm", "--net=host", "busybox", "ip", "l")
c.Assert(err, check.IsNil, check.Commentf("Output: %s", out))
c.Assert(strings.Contains(out, "eth0"), check.Equals, true,
check.Commentf("There should be eth0 in container when --net=host when bridge network is disabled: %s", out))
}
func (s *DockerDaemonSuite) TestDaemonRestartWithContainerRunning(t *check.C) {
+19 -2
View File
@@ -444,7 +444,6 @@ func (s *DockerSuite) TestInspectExecID(c *check.C) {
}
func (s *DockerSuite) TestLinksPingLinkedContainersOnRename(c *check.C) {
var out string
out, _ = dockerCmd(c, "run", "-d", "--name", "container1", "busybox", "top")
idA := strings.TrimSpace(out)
@@ -609,7 +608,6 @@ func (s *DockerSuite) TestRunMutableNetworkFiles(c *check.C) {
}
func (s *DockerSuite) TestExecWithUser(c *check.C) {
runCmd := exec.Command(dockerBinary, "run", "-d", "--name", "parent", "busybox", "top")
if out, _, err := runCommandWithOutput(runCmd); err != nil {
c.Fatal(out, err)
@@ -634,3 +632,22 @@ func (s *DockerSuite) TestExecWithUser(c *check.C) {
}
}
func (s *DockerSuite) TestExecWithImageUser(c *check.C) {
name := "testbuilduser"
_, err := buildImage(name,
`FROM busybox
RUN echo 'dockerio:x:1001:1001::/bin:/bin/false' >> /etc/passwd
USER dockerio`,
true)
if err != nil {
c.Fatalf("Could not build image %s: %v", name, err)
}
dockerCmd(c, "run", "-d", "--name", "dockerioexec", name, "top")
out, _ := dockerCmd(c, "exec", "dockerioexec", "whoami")
if !strings.Contains(out, "dockerio") {
c.Fatalf("exec with user by id expected dockerio user got %s", out)
}
}
+3 -3
View File
@@ -154,9 +154,9 @@ func NewSession(client *http.Client, authConfig *cliconfig.AuthConfig, endpoint
}
}
if endpoint.Version == APIVersion1 {
client.Transport = AuthTransport(client.Transport, authConfig, alwaysSetBasicAuth)
}
// Annotate the transport unconditionally so that v2 can
// properly fallback on v1 when an image is not found.
client.Transport = AuthTransport(client.Transport, authConfig, alwaysSetBasicAuth)
jar, err := cookiejar.New(nil)
if err != nil {
+10 -2
View File
@@ -32,7 +32,11 @@ func (e *Entrypoint) UnmarshalJSON(b []byte) error {
p := make([]string, 0, 1)
if err := json.Unmarshal(b, &p); err != nil {
p = append(p, string(b))
var s string
if err := json.Unmarshal(b, &s); err != nil {
return err
}
p = append(p, s)
}
e.parts = p
return nil
@@ -79,7 +83,11 @@ func (e *Command) UnmarshalJSON(b []byte) error {
p := make([]string, 0, 1)
if err := json.Unmarshal(b, &p); err != nil {
p = append(p, string(b))
var s string
if err := json.Unmarshal(b, &s); err != nil {
return err
}
p = append(p, s)
}
e.parts = p
return nil
+81
View File
@@ -2,6 +2,7 @@ package runconfig
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"strings"
@@ -299,3 +300,83 @@ func TestDecodeContainerConfig(t *testing.T) {
}
}
}
func TestEntrypointUnmarshalString(t *testing.T) {
var e *Entrypoint
echo, err := json.Marshal("echo")
if err != nil {
t.Fatal(err)
}
if err := json.Unmarshal(echo, &e); err != nil {
t.Fatal(err)
}
slice := e.Slice()
if len(slice) != 1 {
t.Fatalf("expected 1 element after unmarshal: %q", slice)
}
if slice[0] != "echo" {
t.Fatalf("expected `echo`, got: %q", slice[0])
}
}
func TestEntrypointUnmarshalSlice(t *testing.T) {
var e *Entrypoint
echo, err := json.Marshal([]string{"echo"})
if err != nil {
t.Fatal(err)
}
if err := json.Unmarshal(echo, &e); err != nil {
t.Fatal(err)
}
slice := e.Slice()
if len(slice) != 1 {
t.Fatalf("expected 1 element after unmarshal: %q", slice)
}
if slice[0] != "echo" {
t.Fatalf("expected `echo`, got: %q", slice[0])
}
}
func TestCommandUnmarshalSlice(t *testing.T) {
var e *Command
echo, err := json.Marshal([]string{"echo"})
if err != nil {
t.Fatal(err)
}
if err := json.Unmarshal(echo, &e); err != nil {
t.Fatal(err)
}
slice := e.Slice()
if len(slice) != 1 {
t.Fatalf("expected 1 element after unmarshal: %q", slice)
}
if slice[0] != "echo" {
t.Fatalf("expected `echo`, got: %q", slice[0])
}
}
func TestCommandUnmarshalString(t *testing.T) {
var e *Command
echo, err := json.Marshal("echo")
if err != nil {
t.Fatal(err)
}
if err := json.Unmarshal(echo, &e); err != nil {
t.Fatal(err)
}
slice := e.Slice()
if len(slice) != 1 {
t.Fatalf("expected 1 element after unmarshal: %q", slice)
}
if slice[0] != "echo" {
t.Fatalf("expected `echo`, got: %q", slice[0])
}
}
+8 -3
View File
@@ -1,6 +1,6 @@
{
"ImportPath": "github.com/docker/libnetwork",
"GoVersion": "go1.4.1",
"GoVersion": "go1.4.2",
"Packages": [
"./..."
],
@@ -55,6 +55,11 @@
"Comment": "v1.4.1-3479-ga9172f5",
"Rev": "a9172f572e13086859c652e2d581950e910d63d4"
},
{
"ImportPath": "github.com/docker/libcontainer/netlink",
"Comment": "v1.4.0-495-g3e66118",
"Rev": "3e661186ba24f259d3860f067df052c7f6904bee"
},
{
"ImportPath": "github.com/docker/libcontainer/user",
"Comment": "v1.4.0-495-g3e66118",
@@ -75,11 +80,11 @@
},
{
"ImportPath": "github.com/vishvananda/netlink",
"Rev": "8eb64238879fed52fd51c5b30ad20b928fb4c36c"
"Rev": "20397a138846e4d6590e01783ed023ed7e1c38a6"
},
{
"ImportPath": "github.com/vishvananda/netns",
"Rev": "5478c060110032f972e86a1f844fdb9a2f008f2c"
"Rev": "493029407eeb434d0c2d44e02ea072ff2488d322"
}
]
}
@@ -2,12 +2,14 @@ package bridge
import (
"errors"
"fmt"
"net"
"os/exec"
"strings"
"sync"
"github.com/Sirupsen/logrus"
bri "github.com/docker/libcontainer/netlink"
"github.com/docker/libnetwork/driverapi"
"github.com/docker/libnetwork/ipallocator"
"github.com/docker/libnetwork/iptables"
@@ -397,6 +399,20 @@ func (d *driver) DeleteNetwork(nid types.UUID) error {
return err
}
func addToBridge(ifaceName, bridgeName string) error {
iface, err := net.InterfaceByName(ifaceName)
if err != nil {
return fmt.Errorf("could not find interface %s: %v", ifaceName, err)
}
master, err := net.InterfaceByName(bridgeName)
if err != nil {
return fmt.Errorf("could not find bridge %s: %v", bridgeName, err)
}
return bri.AddToBridge(iface, master)
}
func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointInfo, epOptions map[string]interface{}) error {
var (
ipv6Addr *net.IPNet
@@ -461,27 +477,27 @@ func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointIn
}()
// Generate a name for what will be the host side pipe interface
name1, err := generateIfaceName()
hostIfName, err := generateIfaceName()
if err != nil {
return err
}
// Generate a name for what will be the sandbox side pipe interface
name2, err := generateIfaceName()
containerIfName, err := generateIfaceName()
if err != nil {
return err
}
// Generate and add the interface pipe host <-> sandbox
veth := &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: name1, TxQLen: 0},
PeerName: name2}
LinkAttrs: netlink.LinkAttrs{Name: hostIfName, TxQLen: 0},
PeerName: containerIfName}
if err = netlink.LinkAdd(veth); err != nil {
return err
}
// Get the host side pipe interface handler
host, err := netlink.LinkByName(name1)
host, err := netlink.LinkByName(hostIfName)
if err != nil {
return err
}
@@ -492,7 +508,7 @@ func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointIn
}()
// Get the sandbox side pipe interface handler
sbox, err := netlink.LinkByName(name2)
sbox, err := netlink.LinkByName(containerIfName)
if err != nil {
return err
}
@@ -515,9 +531,8 @@ func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointIn
}
// Attach host side pipe interface into the bridge
if err = netlink.LinkSetMaster(host,
&netlink.Bridge{LinkAttrs: netlink.LinkAttrs{Name: config.BridgeName}}); err != nil {
return err
if err = addToBridge(hostIfName, config.BridgeName); err != nil {
return fmt.Errorf("adding interface %s to bridge %s failed: %v", hostIfName, config.BridgeName, err)
}
if !config.EnableUserlandProxy {
@@ -534,14 +549,24 @@ func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointIn
}
ipv4Addr := &net.IPNet{IP: ip4, Mask: n.bridge.bridgeIPv4.Mask}
// Down the interface before configuring mac address.
if err := netlink.LinkSetDown(sbox); err != nil {
return fmt.Errorf("could not set link down for container interface %s: %v", containerIfName, err)
}
// Set the sbox's MAC. If specified, use the one configured by user, otherwise generate one based on IP.
mac := electMacAddress(epConfig, ip4)
err = netlink.LinkSetHardwareAddr(sbox, mac)
if err != nil {
return err
return fmt.Errorf("could not set mac address for container interface %s: %v", containerIfName, err)
}
endpoint.macAddress = mac
// Up the host interface after finishing all netlink configuration
if err := netlink.LinkSetUp(host); err != nil {
return fmt.Errorf("could not set link up for host interface %s: %v", hostIfName, err)
}
// v6 address for the sandbox side pipe interface
ipv6Addr = &net.IPNet{}
if config.EnableIPv6 {
@@ -571,7 +596,7 @@ func (d *driver) CreateEndpoint(nid, eid types.UUID, epInfo driverapi.EndpointIn
// Create the sandbox side pipe interface
intf := &sandbox.Interface{}
intf.SrcName = name2
intf.SrcName = containerIfName
intf.DstName = containerVethPrefix
intf.Address = ipv4Addr
@@ -1,14 +1,15 @@
package bridge
import (
log "github.com/Sirupsen/logrus"
"github.com/docker/docker/pkg/parsers/kernel"
"github.com/docker/libnetwork/netutils"
bri "github.com/docker/libcontainer/netlink"
"github.com/vishvananda/netlink"
)
// SetupDevice create a new bridge interface/
func setupDevice(config *NetworkConfiguration, i *bridgeInterface) error {
var setMac bool
// We only attempt to create the bridge when the requested device name is
// the default one.
if config.BridgeName != DefaultBridgeName && !config.AllowNonDefaultBridge {
@@ -26,12 +27,10 @@ func setupDevice(config *NetworkConfiguration, i *bridgeInterface) error {
// was not supported before that.
kv, err := kernel.GetKernelVersion()
if err == nil && (kv.Kernel >= 3 && kv.Major >= 3) {
i.Link.Attrs().HardwareAddr = netutils.GenerateRandomMAC()
log.Debugf("Setting bridge mac address to %s", i.Link.Attrs().HardwareAddr)
setMac = true
}
// Call out to netlink to create the device.
return netlink.LinkAdd(i.Link)
return bri.CreateBridge(config.BridgeName, setMac)
}
// SetupDeviceUp ups the given bridge interface.
@@ -40,7 +40,11 @@ func (d *driver) EndpointOperInfo(nid, eid types.UUID) (map[string]interface{},
// Join method is invoked when a Sandbox is attached to an endpoint.
func (d *driver) Join(nid, eid types.UUID, sboxKey string, jinfo driverapi.JoinInfo, options map[string]interface{}) error {
return (jinfo.SetHostsPath("/etc/hosts"))
if err := jinfo.SetHostsPath("/etc/hosts"); err != nil {
return err
}
return jinfo.SetResolvConfPath("/etc/resolv.conf")
}
// Leave method is invoked when a Sandbox detaches from an endpoint.
+49
View File
@@ -2,6 +2,7 @@ package libnetwork
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path"
@@ -45,6 +46,9 @@ type Endpoint interface {
// Delete and detaches this endpoint from the network.
Delete() error
// Retrieve the interfaces' statistics from the sandbox
Statistics() (map[string]*sandbox.InterfaceStatistics, error)
}
// EndpointOption is a option setter function type used to pass varios options to Network
@@ -402,6 +406,33 @@ func (ep *endpoint) Delete() error {
return err
}
func (ep *endpoint) Statistics() (map[string]*sandbox.InterfaceStatistics, error) {
m := make(map[string]*sandbox.InterfaceStatistics)
ep.Lock()
n := ep.network
skey := ep.container.data.SandboxKey
ep.Unlock()
n.Lock()
c := n.ctrlr
n.Unlock()
sbox := c.sandboxGet(skey)
if sbox == nil {
return m, nil
}
var err error
for _, i := range sbox.Interfaces() {
if m[i.DstName], err = i.Statistics(); err != nil {
return m, err
}
}
return m, nil
}
func (ep *endpoint) buildHostsFiles() error {
var extraContent []etchosts.Record
@@ -567,9 +598,19 @@ func (ep *endpoint) updateDNS(resolvConf []byte) error {
return os.Rename(tmpResolvFile.Name(), container.config.resolvConfPath)
}
func copyFile(src, dst string) error {
sBytes, err := ioutil.ReadFile(src)
if err != nil {
return err
}
return ioutil.WriteFile(dst, sBytes, 0644)
}
func (ep *endpoint) setupDNS() error {
ep.Lock()
container := ep.container
joinInfo := ep.joinInfo
ep.Unlock()
if container == nil {
@@ -586,6 +627,14 @@ func (ep *endpoint) setupDNS() error {
return err
}
if joinInfo.resolvConfPath != "" {
if err := copyFile(joinInfo.resolvConfPath, container.config.resolvConfPath); err != nil {
return fmt.Errorf("could not copy source resolv.conf file %s to %s: %v", joinInfo.resolvConfPath, container.config.resolvConfPath, err)
}
return nil
}
resolvConf, err := resolvconf.Get()
if err != nil {
return err
@@ -817,6 +817,15 @@ func TestEndpointJoin(t *testing.T) {
t.Fatalf("Expected an non-empty sandbox key for a joined endpoint. Instead found a empty sandbox key")
}
// Attempt retrieval of endpoint interfaces statistics
stats, err := ep.Statistics()
if err != nil {
t.Fatal(err)
}
if _, ok := stats["eth0"]; !ok {
t.Fatalf("Did not find eth0 statistics")
}
checkSandbox(t, info)
}
@@ -1119,6 +1128,74 @@ func TestEnableIPv6(t *testing.T) {
}
}
func TestResolvConfHost(t *testing.T) {
if !netutils.IsRunningInContainer() {
defer netutils.SetupTestNetNS(t)()
}
tmpResolvConf := []byte("search localhost.net\nnameserver 127.0.0.1\nnameserver 2001:4860:4860::8888")
//take a copy of resolv.conf for restoring after test completes
resolvConfSystem, err := ioutil.ReadFile("/etc/resolv.conf")
if err != nil {
t.Fatal(err)
}
//cleanup
defer func() {
if err := ioutil.WriteFile("/etc/resolv.conf", resolvConfSystem, 0644); err != nil {
t.Fatal(err)
}
}()
n, err := createTestNetwork("host", "testnetwork", options.Generic{}, options.Generic{})
if err != nil {
t.Fatal(err)
}
ep1, err := n.CreateEndpoint("ep1", nil)
if err != nil {
t.Fatal(err)
}
if err := ioutil.WriteFile("/etc/resolv.conf", tmpResolvConf, 0644); err != nil {
t.Fatal(err)
}
resolvConfPath := "/tmp/libnetwork_test/resolv.conf"
defer os.Remove(resolvConfPath)
_, err = ep1.Join(containerID,
libnetwork.JoinOptionResolvConfPath(resolvConfPath))
if err != nil {
t.Fatal(err)
}
defer func() {
err = ep1.Leave(containerID)
if err != nil {
t.Fatal(err)
}
}()
finfo, err := os.Stat(resolvConfPath)
if err != nil {
t.Fatal(err)
}
fmode := (os.FileMode)(0644)
if finfo.Mode() != fmode {
t.Fatalf("Expected file mode %s, got %s", fmode.String(), finfo.Mode().String())
}
content, err := ioutil.ReadFile(resolvConfPath)
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(content, tmpResolvConf) {
t.Fatalf("Expected %s, Got %s", string(tmpResolvConf), string(content))
}
}
func TestResolvConf(t *testing.T) {
if !netutils.IsRunningInContainer() {
defer netutils.SetupTestNetNS(t)()
@@ -276,6 +276,7 @@ func (n *networkNamespace) AddInterface(i *Interface) error {
n.Lock()
i.DstName = fmt.Sprintf("%s%d", i.DstName, n.nextIfIndex)
n.nextIfIndex++
path := n.path
n.Unlock()
runtime.LockOSThread()
@@ -287,9 +288,9 @@ func (n *networkNamespace) AddInterface(i *Interface) error {
}
defer origns.Close()
f, err := os.OpenFile(n.path, os.O_RDONLY, 0)
f, err := os.OpenFile(path, os.O_RDONLY, 0)
if err != nil {
return fmt.Errorf("failed get network namespace %q: %v", n.path, err)
return fmt.Errorf("failed get network namespace %q: %v", path, err)
}
defer f.Close()
@@ -325,6 +326,8 @@ func (n *networkNamespace) AddInterface(i *Interface) error {
return err
}
i.sandboxKey = path
n.Lock()
n.sinfo.Interfaces = append(n.sinfo.Interfaces, i)
n.Unlock()
@@ -1,9 +1,15 @@
package sandbox
import (
"fmt"
"net"
"os"
"os/exec"
"regexp"
"runtime"
"github.com/docker/libnetwork/types"
"github.com/vishvananda/netns"
)
// Sandbox represents a network sandbox, identified by a specific key. It
@@ -74,6 +80,9 @@ type Interface struct {
// IPv6 address for the interface.
AddressIPv6 *net.IPNet
// Parent sandbox's key
sandboxKey string
}
// GetCopy returns a copy of this Interface structure
@@ -157,3 +166,95 @@ func (s *Info) Equal(o *Info) bool {
return true
}
func nsInvoke(path string, inNsfunc func(callerFD int) error) error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
origns, err := netns.Get()
if err != nil {
return err
}
defer origns.Close()
f, err := os.OpenFile(path, os.O_RDONLY, 0)
if err != nil {
return fmt.Errorf("failed get network namespace %q: %v", path, err)
}
defer f.Close()
nsFD := f.Fd()
if err = netns.Set(netns.NsHandle(nsFD)); err != nil {
return err
}
defer netns.Set(origns)
// Invoked after the namespace switch.
return inNsfunc(int(origns))
}
// Statistics returns the statistics for this interface
func (i *Interface) Statistics() (*InterfaceStatistics, error) {
s := &InterfaceStatistics{}
err := nsInvoke(i.sandboxKey, func(callerFD int) error {
// For some reason ioutil.ReadFile(netStatsFile) reads the file in
// the default netns when this code is invoked from docker.
// Executing "cat <netStatsFile>" works as expected.
data, err := exec.Command("cat", netStatsFile).Output()
if err != nil {
return fmt.Errorf("failed to open %s: %v", netStatsFile, err)
}
return scanInterfaceStats(string(data), i.DstName, s)
})
if err != nil {
err = fmt.Errorf("failed to retrieve the statistics for %s in netns %s: %v", i.DstName, i.sandboxKey, err)
}
return s, err
}
// InterfaceStatistics represents the interface's statistics
type InterfaceStatistics struct {
RxBytes uint64
RxPackets uint64
RxErrors uint64
RxDropped uint64
TxBytes uint64
TxPackets uint64
TxErrors uint64
TxDropped uint64
}
func (is *InterfaceStatistics) String() string {
return fmt.Sprintf("\nRxBytes: %d, RxPackets: %d, RxErrors: %d, RxDropped: %d, TxBytes: %d, TxPackets: %d, TxErrors: %d, TxDropped: %d",
is.RxBytes, is.RxPackets, is.RxErrors, is.RxDropped, is.TxBytes, is.TxPackets, is.TxErrors, is.TxDropped)
}
// In older kernels (like the one in Centos 6.6 distro) sysctl does not have netns support. Therefore
// we cannot gather the statistics from /sys/class/net/<dev>/statistics/<counter> files. Per-netns stats
// are naturally found in /proc/net/dev in kernels which support netns (ifconfig relyes on that).
const (
netStatsFile = "/proc/net/dev"
base = "[ ]*%s:([ ]+[0-9]+){16}"
)
func scanInterfaceStats(data, ifName string, i *InterfaceStatistics) error {
var (
bktStr string
bkt uint64
)
regex := fmt.Sprintf(base, ifName)
re := regexp.MustCompile(regex)
line := re.FindString(data)
_, err := fmt.Sscanf(line, "%s %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d %d",
&bktStr, &i.RxBytes, &i.RxPackets, &i.RxErrors, &i.RxDropped, &bkt, &bkt, &bkt,
&bkt, &i.TxBytes, &i.TxPackets, &i.TxErrors, &i.TxDropped, &bkt, &bkt, &bkt, &bkt)
return err
}
@@ -157,3 +157,29 @@ func verifyCleanup(t *testing.T, s Sandbox, wait bool) {
}
}
}
func TestScanStatistics(t *testing.T) {
data :=
"Inter-| Receive | Transmit\n" +
" face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed\n" +
" eth0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n" +
" wlan0: 7787685 11141 0 0 0 0 0 0 1681390 7220 0 0 0 0 0 0\n" +
" lo: 783782 1853 0 0 0 0 0 0 783782 1853 0 0 0 0 0 0\n" +
"lxcbr0: 0 0 0 0 0 0 0 0 9006 61 0 0 0 0 0 0\n"
i := &InterfaceStatistics{}
if err := scanInterfaceStats(data, "wlan0", i); err != nil {
t.Fatal(err)
}
if i.TxBytes != 1681390 || i.TxPackets != 7220 || i.RxBytes != 7787685 || i.RxPackets != 11141 {
t.Fatalf("Error scanning the statistics")
}
if err := scanInterfaceStats(data, "lxcbr0", i); err != nil {
t.Fatal(err)
}
if i.TxBytes != 9006 || i.TxPackets != 61 || i.RxBytes != 0 || i.RxPackets != 0 {
t.Fatalf("Error scanning the statistics")
}
}
+7 -1
View File
@@ -43,13 +43,19 @@ import (
)
func main() {
mybridge := &netlink.Bridge{netlink.LinkAttrs{Name: "foo"}}
la := netlink.NewLinkAttrs()
la.Name = "foo"
mybridge := &netlink.Bridge{la}}
_ := netlink.LinkAdd(mybridge)
eth1, _ := netlink.LinkByName("eth1")
netlink.LinkSetMaster(eth1, mybridge)
}
```
Note `NewLinkAttrs` constructor, it sets default values in structure. For now
it sets only `TxQLen` to `-1`, so kernel will set default by itself. If you're
using simple initialization(`LinkAttrs{Name: "foo"}`) `TxQLen` will be set to
`0` unless you specify it like `LinkAttrs{Name: "foo", TxQLen: 1000}`.
Add a new ip address to loopback:
+2 -2
View File
@@ -14,8 +14,8 @@ type Addr struct {
}
// String returns $ip/$netmask $label
func (addr Addr) String() string {
return fmt.Sprintf("%s %s", addr.IPNet, addr.Label)
func (a Addr) String() string {
return fmt.Sprintf("%s %s", a.IPNet, a.Label)
}
// ParseAddr parses the string representation of an address in the
+16 -2
View File
@@ -81,7 +81,7 @@ func AddrList(link Link, family int) ([]Addr, error) {
index = base.Index
}
res := make([]Addr, 0)
var res []Addr
for _, m := range msgs {
msg := nl.DeserializeIfAddrmsg(m)
@@ -95,11 +95,17 @@ func AddrList(link Link, family int) ([]Addr, error) {
return nil, err
}
var local, dst *net.IPNet
var addr Addr
for _, attr := range attrs {
switch attr.Attr.Type {
case syscall.IFA_ADDRESS:
addr.IPNet = &net.IPNet{
dst = &net.IPNet{
IP: attr.Value,
Mask: net.CIDRMask(int(msg.Prefixlen), 8*len(attr.Value)),
}
case syscall.IFA_LOCAL:
local = &net.IPNet{
IP: attr.Value,
Mask: net.CIDRMask(int(msg.Prefixlen), 8*len(attr.Value)),
}
@@ -107,6 +113,14 @@ func AddrList(link Link, family int) ([]Addr, error) {
addr.Label = string(attr.Value[:len(attr.Value)-1])
}
}
// IFA_LOCAL should be there but if not, fall back to IFA_ADDRESS
if local != nil {
addr.IPNet = local
} else {
addr.IPNet = dst
}
res = append(res, addr)
}
+28 -3
View File
@@ -10,16 +10,29 @@ type Link interface {
Type() string
}
type (
NsPid int
NsFd int
)
// LinkAttrs represents data shared by most link types
type LinkAttrs struct {
Index int
MTU int
TxQLen uint32 // Transmit Queue Length
TxQLen int // Transmit Queue Length
Name string
HardwareAddr net.HardwareAddr
Flags net.Flags
ParentIndex int // index of the parent link device
MasterIndex int // must be the index of a bridge
ParentIndex int // index of the parent link device
MasterIndex int // must be the index of a bridge
Namespace interface{} // nil | NsPid | NsFd
}
// NewLinkAttrs returns LinkAttrs structure filled with default values
func NewLinkAttrs() LinkAttrs {
return LinkAttrs{
TxQLen: -1,
}
}
// Device links cannot be created via netlink. These links
@@ -76,9 +89,21 @@ func (vlan *Vlan) Type() string {
return "vlan"
}
type MacvlanMode uint16
const (
MACVLAN_MODE_DEFAULT MacvlanMode = iota
MACVLAN_MODE_PRIVATE
MACVLAN_MODE_VEPA
MACVLAN_MODE_BRIDGE
MACVLAN_MODE_PASSTHRU
MACVLAN_MODE_SOURCE
)
// Macvlan links have ParentIndex set in their Attrs()
type Macvlan struct {
LinkAttrs
Mode MacvlanMode
}
func (macvlan *Macvlan) Attrs() *LinkAttrs {
+73 -15
View File
@@ -13,6 +13,15 @@ import (
var native = nl.NativeEndian()
var lookupByDump = false
var macvlanModes = [...]uint32{
0,
nl.MACVLAN_MODE_PRIVATE,
nl.MACVLAN_MODE_VEPA,
nl.MACVLAN_MODE_BRIDGE,
nl.MACVLAN_MODE_PASSTHRU,
nl.MACVLAN_MODE_SOURCE,
}
func ensureIndex(link *LinkAttrs) {
if link != nil && link.Index == 0 {
newlink, _ := LinkByName(link.Name)
@@ -39,7 +48,7 @@ func LinkSetUp(link Link) error {
return err
}
// LinkSetUp disables link device.
// LinkSetDown disables link device.
// Equivalent to: `ip link set $link down`
func LinkSetDown(link Link) error {
base := link.Attrs()
@@ -67,7 +76,7 @@ func LinkSetMTU(link Link, mtu int) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = syscall.IFLA_MTU
req.AddData(msg)
b := make([]byte, 4)
@@ -91,7 +100,7 @@ func LinkSetName(link Link, name string) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = syscall.IFLA_IFNAME
req.AddData(msg)
data := nl.NewRtAttr(syscall.IFLA_IFNAME, []byte(name))
@@ -112,7 +121,7 @@ func LinkSetHardwareAddr(link Link, hwaddr net.HardwareAddr) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = syscall.IFLA_ADDRESS
req.AddData(msg)
data := nl.NewRtAttr(syscall.IFLA_ADDRESS, []byte(hwaddr))
@@ -145,7 +154,7 @@ func LinkSetMasterByIndex(link Link, masterIndex int) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = syscall.IFLA_MASTER
req.AddData(msg)
b := make([]byte, 4)
@@ -170,7 +179,7 @@ func LinkSetNsPid(link Link, nspid int) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = syscall.IFLA_NET_NS_PID
req.AddData(msg)
b := make([]byte, 4)
@@ -183,7 +192,7 @@ func LinkSetNsPid(link Link, nspid int) error {
return err
}
// LinkSetNsPid puts the device into a new network namespace. The
// LinkSetNsFd puts the device into a new network namespace. The
// fd must be an open file descriptor to a network namespace.
// Similar to: `ip link set $link netns $ns`
func LinkSetNsFd(link Link, fd int) error {
@@ -195,7 +204,7 @@ func LinkSetNsFd(link Link, fd int) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = nl.IFLA_NET_NS_FD
req.AddData(msg)
b := make([]byte, 4)
@@ -312,11 +321,28 @@ func LinkAdd(link Link) error {
req.AddData(mtu)
}
if base.TxQLen >= 0 {
qlen := nl.NewRtAttr(syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
req.AddData(qlen)
}
if base.Namespace != nil {
var attr *nl.RtAttr
switch base.Namespace.(type) {
case NsPid:
val := nl.Uint32Attr(uint32(base.Namespace.(NsPid)))
attr = nl.NewRtAttr(syscall.IFLA_NET_NS_PID, val)
case NsFd:
val := nl.Uint32Attr(uint32(base.Namespace.(NsFd)))
attr = nl.NewRtAttr(nl.IFLA_NET_NS_FD, val)
}
req.AddData(attr)
}
linkInfo := nl.NewRtAttr(syscall.IFLA_LINKINFO, nil)
nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_KIND, nl.NonZeroTerminated(link.Type()))
nl.NewRtAttrChild(linkInfo, syscall.IFLA_TXQLEN, nl.Uint32Attr(base.TxQLen))
if vlan, ok := link.(*Vlan); ok {
b := make([]byte, 2)
native.PutUint16(b, uint16(vlan.VlanId))
@@ -327,15 +353,23 @@ func LinkAdd(link Link) error {
peer := nl.NewRtAttrChild(data, nl.VETH_INFO_PEER, nil)
nl.NewIfInfomsgChild(peer, syscall.AF_UNSPEC)
nl.NewRtAttrChild(peer, syscall.IFLA_IFNAME, nl.ZeroTerminated(veth.PeerName))
nl.NewRtAttrChild(peer, syscall.IFLA_TXQLEN, nl.Uint32Attr(base.TxQLen))
if base.TxQLen >= 0 {
nl.NewRtAttrChild(peer, syscall.IFLA_TXQLEN, nl.Uint32Attr(uint32(base.TxQLen)))
}
if base.MTU > 0 {
nl.NewRtAttrChild(peer, syscall.IFLA_MTU, nl.Uint32Attr(uint32(base.MTU)))
}
} else if vxlan, ok := link.(*Vxlan); ok {
addVxlanAttrs(vxlan, linkInfo)
} else if ipv, ok := link.(*IPVlan); ok {
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
nl.NewRtAttrChild(data, nl.IFLA_IPVLAN_MODE, nl.Uint16Attr(uint16(ipv.Mode)))
} else if macv, ok := link.(*Macvlan); ok {
if macv.Mode != MACVLAN_MODE_DEFAULT {
data := nl.NewRtAttrChild(linkInfo, nl.IFLA_INFO_DATA, nil)
nl.NewRtAttrChild(data, nl.IFLA_MACVLAN_MODE, nl.Uint32Attr(macvlanModes[macv.Mode]))
}
}
req.AddData(linkInfo)
@@ -483,6 +517,8 @@ func linkDeserialize(m []byte) (Link, error) {
link = &Vxlan{}
case "ipvlan":
link = &IPVlan{}
case "macvlan":
link = &Macvlan{}
default:
link = &Generic{LinkType: linkType}
}
@@ -498,6 +534,8 @@ func linkDeserialize(m []byte) (Link, error) {
parseVxlanData(link, data)
case "ipvlan":
parseIPVlanData(link, data)
case "macvlan":
parseMacvlanData(link, data)
}
}
}
@@ -520,7 +558,7 @@ func linkDeserialize(m []byte) (Link, error) {
case syscall.IFLA_MASTER:
base.MasterIndex = int(native.Uint32(attr.Value[0:4]))
case syscall.IFLA_TXQLEN:
base.TxQLen = native.Uint32(attr.Value[0:4])
base.TxQLen = int(native.Uint32(attr.Value[0:4]))
}
}
// Links that don't have IFLA_INFO_KIND are hardware devices
@@ -547,8 +585,7 @@ func LinkList() ([]Link, error) {
return nil, err
}
res := make([]Link, 0)
var res []Link
for _, m := range msgs {
link, err := linkDeserialize(m)
if err != nil {
@@ -593,7 +630,7 @@ func setProtinfoAttr(link Link, mode bool, attr int) error {
msg.Type = syscall.RTM_SETLINK
msg.Flags = syscall.NLM_F_REQUEST
msg.Index = int32(base.Index)
msg.Change = nl.DEFAULT_CHANGE
msg.Change = syscall.IFLA_PROTINFO | syscall.NLA_F_NESTED
req.AddData(msg)
br := nl.NewRtAttr(syscall.IFLA_PROTINFO|syscall.NLA_F_NESTED, nil)
@@ -674,6 +711,27 @@ func parseIPVlanData(link Link, data []syscall.NetlinkRouteAttr) {
}
}
func parseMacvlanData(link Link, data []syscall.NetlinkRouteAttr) {
macv := link.(*Macvlan)
for _, datum := range data {
if datum.Attr.Type == nl.IFLA_MACVLAN_MODE {
switch native.Uint32(datum.Value[0:4]) {
case nl.MACVLAN_MODE_PRIVATE:
macv.Mode = MACVLAN_MODE_PRIVATE
case nl.MACVLAN_MODE_VEPA:
macv.Mode = MACVLAN_MODE_VEPA
case nl.MACVLAN_MODE_BRIDGE:
macv.Mode = MACVLAN_MODE_BRIDGE
case nl.MACVLAN_MODE_PASSTHRU:
macv.Mode = MACVLAN_MODE_PASSTHRU
case nl.MACVLAN_MODE_SOURCE:
macv.Mode = MACVLAN_MODE_SOURCE
}
return
}
}
}
// copied from pkg/net_linux.go
func linkFlags(rawFlags uint32) net.Flags {
var f net.Flags
+114 -5
View File
@@ -8,7 +8,10 @@ import (
"github.com/vishvananda/netns"
)
const testTxQLen uint32 = 100
const (
testTxQLen int = 100
defaultTxQLen int = 1000
)
func testLinkAddDel(t *testing.T, link Link) {
links, err := LinkList()
@@ -50,9 +53,9 @@ func testLinkAddDel(t *testing.T, link Link) {
}
}
if veth, ok := link.(*Veth); ok {
if veth.TxQLen != testTxQLen {
t.Fatalf("TxQLen is %d, should be %d", veth.TxQLen, testTxQLen)
if veth, ok := result.(*Veth); ok {
if rBase.TxQLen != base.TxQLen {
t.Fatalf("qlen is %d, should be %d", rBase.TxQLen, base.TxQLen)
}
if rBase.MTU != base.MTU {
t.Fatalf("MTU is %d, should be %d", rBase.MTU, base.MTU)
@@ -91,6 +94,16 @@ func testLinkAddDel(t *testing.T, link Link) {
}
}
if macv, ok := link.(*Macvlan); ok {
other, ok := result.(*Macvlan)
if !ok {
t.Fatal("Result of create is not a macvlan")
}
if macv.Mode != other.Mode {
t.Fatalf("Got unexpected mode: %d, expected: %d", other.Mode, macv.Mode)
}
}
if err = LinkDel(link); err != nil {
t.Fatal(err)
}
@@ -199,7 +212,10 @@ func TestLinkAddDelMacvlan(t *testing.T) {
t.Fatal(err)
}
testLinkAddDel(t, &Macvlan{LinkAttrs{Name: "bar", ParentIndex: parent.Attrs().Index}})
testLinkAddDel(t, &Macvlan{
LinkAttrs: LinkAttrs{Name: "bar", ParentIndex: parent.Attrs().Index},
Mode: MACVLAN_MODE_PRIVATE,
})
if err := LinkDel(parent); err != nil {
t.Fatal(err)
@@ -213,6 +229,99 @@ func TestLinkAddDelVeth(t *testing.T) {
testLinkAddDel(t, &Veth{LinkAttrs{Name: "foo", TxQLen: testTxQLen, MTU: 1400}, "bar"})
}
func TestLinkAddVethWithDefaultTxQLen(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
la := NewLinkAttrs()
la.Name = "foo"
veth := &Veth{LinkAttrs: la, PeerName: "bar"}
if err := LinkAdd(veth); err != nil {
t.Fatal(err)
}
link, err := LinkByName("foo")
if err != nil {
t.Fatal(err)
}
if veth, ok := link.(*Veth); !ok {
t.Fatalf("unexpected link type: %T", link)
} else {
if veth.TxQLen != defaultTxQLen {
t.Fatalf("TxQLen is %d, should be %d", veth.TxQLen, defaultTxQLen)
}
}
peer, err := LinkByName("bar")
if err != nil {
t.Fatal(err)
}
if veth, ok := peer.(*Veth); !ok {
t.Fatalf("unexpected link type: %T", link)
} else {
if veth.TxQLen != defaultTxQLen {
t.Fatalf("TxQLen is %d, should be %d", veth.TxQLen, defaultTxQLen)
}
}
}
func TestLinkAddVethWithZeroTxQLen(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
la := NewLinkAttrs()
la.Name = "foo"
la.TxQLen = 0
veth := &Veth{LinkAttrs: la, PeerName: "bar"}
if err := LinkAdd(veth); err != nil {
t.Fatal(err)
}
link, err := LinkByName("foo")
if err != nil {
t.Fatal(err)
}
if veth, ok := link.(*Veth); !ok {
t.Fatalf("unexpected link type: %T", link)
} else {
if veth.TxQLen != 0 {
t.Fatalf("TxQLen is %d, should be %d", veth.TxQLen, 0)
}
}
peer, err := LinkByName("bar")
if err != nil {
t.Fatal(err)
}
if veth, ok := peer.(*Veth); !ok {
t.Fatalf("unexpected link type: %T", link)
} else {
if veth.TxQLen != 0 {
t.Fatalf("TxQLen is %d, should be %d", veth.TxQLen, 0)
}
}
}
func TestLinkAddDummyWithTxQLen(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
la := NewLinkAttrs()
la.Name = "foo"
la.TxQLen = 1500
dummy := &Dummy{LinkAttrs: la}
if err := LinkAdd(dummy); err != nil {
t.Fatal(err)
}
link, err := LinkByName("foo")
if err != nil {
t.Fatal(err)
}
if dummy, ok := link.(*Dummy); !ok {
t.Fatalf("unexpected link type: %T", link)
} else {
if dummy.TxQLen != 1500 {
t.Fatalf("TxQLen is %d, should be %d", dummy.TxQLen, 1500)
}
}
}
func TestLinkAddDelBridgeMaster(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
+1 -1
View File
@@ -141,7 +141,7 @@ func NeighList(linkIndex, family int) ([]Neigh, error) {
return nil, err
}
res := make([]Neigh, 0)
var res []Neigh
for _, m := range msgs {
ndm := deserializeNdmsg(m)
if linkIndex != 0 && int(ndm.Index) != linkIndex {
@@ -79,3 +79,18 @@ const (
// not defined in syscall
IFLA_NET_NS_FD = 28
)
const (
IFLA_MACVLAN_UNSPEC = iota
IFLA_MACVLAN_MODE
IFLA_MACVLAN_FLAGS
IFLA_MACVLAN_MAX = IFLA_MACVLAN_FLAGS
)
const (
MACVLAN_MODE_PRIVATE = 1
MACVLAN_MODE_VEPA = 2
MACVLAN_MODE_BRIDGE = 4
MACVLAN_MODE_PASSTHRU = 8
MACVLAN_MODE_SOURCE = 16
)
+11 -11
View File
@@ -172,16 +172,16 @@ type NetlinkRequest struct {
}
// Serialize the Netlink Request into a byte array
func (msg *NetlinkRequest) Serialize() []byte {
func (req *NetlinkRequest) Serialize() []byte {
length := syscall.SizeofNlMsghdr
dataBytes := make([][]byte, len(msg.Data))
for i, data := range msg.Data {
dataBytes := make([][]byte, len(req.Data))
for i, data := range req.Data {
dataBytes[i] = data.Serialize()
length = length + len(dataBytes[i])
}
msg.Len = uint32(length)
req.Len = uint32(length)
b := make([]byte, length)
hdr := (*(*[syscall.SizeofNlMsghdr]byte)(unsafe.Pointer(msg)))[:]
hdr := (*(*[syscall.SizeofNlMsghdr]byte)(unsafe.Pointer(req)))[:]
next := syscall.SizeofNlMsghdr
copy(b[0:next], hdr)
for _, data := range dataBytes {
@@ -193,9 +193,9 @@ func (msg *NetlinkRequest) Serialize() []byte {
return b
}
func (msg *NetlinkRequest) AddData(data NetlinkRequestData) {
func (req *NetlinkRequest) AddData(data NetlinkRequestData) {
if data != nil {
msg.Data = append(msg.Data, data)
req.Data = append(req.Data, data)
}
}
@@ -218,11 +218,11 @@ func (req *NetlinkRequest) Execute(sockType int, resType uint16) ([][]byte, erro
return nil, err
}
res := make([][]byte, 0)
var res [][]byte
done:
for {
msgs, err := s.Recieve()
msgs, err := s.Receive()
if err != nil {
return nil, err
}
@@ -294,7 +294,7 @@ func getNetlinkSocket(protocol int) (*NetlinkSocket, error) {
// Create a netlink socket with a given protocol (e.g. NETLINK_ROUTE)
// and subscribe it to multicast groups passed in variable argument list.
// Returns the netlink socket on whic hReceive() method can be called
// Returns the netlink socket on which Receive() method can be called
// to retrieve the messages from the kernel.
func Subscribe(protocol int, groups ...uint) (*NetlinkSocket, error) {
fd, err := syscall.Socket(syscall.AF_NETLINK, syscall.SOCK_RAW, protocol)
@@ -329,7 +329,7 @@ func (s *NetlinkSocket) Send(request *NetlinkRequest) error {
return nil
}
func (s *NetlinkSocket) Recieve() ([]syscall.NetlinkMessage, error) {
func (s *NetlinkSocket) Receive() ([]syscall.NetlinkMessage, error) {
rb := make([]byte, syscall.Getpagesize())
nr, _, err := syscall.Recvfrom(s.fd, rb, 0)
if err != nil {
+3 -4
View File
@@ -104,9 +104,8 @@ func (x *XfrmAddress) ToIPNet(prefixlen uint8) *net.IPNet {
ip := x.ToIP()
if GetIPFamily(ip) == FAMILY_V4 {
return &net.IPNet{IP: ip, Mask: net.CIDRMask(int(prefixlen), 32)}
} else {
return &net.IPNet{IP: ip, Mask: net.CIDRMask(int(prefixlen), 128)}
}
return &net.IPNet{IP: ip, Mask: net.CIDRMask(int(prefixlen), 128)}
}
func (x *XfrmAddress) FromIP(ip net.IP) {
@@ -125,8 +124,8 @@ func DeserializeXfrmAddress(b []byte) *XfrmAddress {
return (*XfrmAddress)(unsafe.Pointer(&b[0:SizeofXfrmAddress][0]))
}
func (msg *XfrmAddress) Serialize() []byte {
return (*(*[SizeofXfrmAddress]byte)(unsafe.Pointer(msg)))[:]
func (x *XfrmAddress) Serialize() []byte {
return (*(*[SizeofXfrmAddress]byte)(unsafe.Pointer(x)))[:]
}
// struct xfrm_selector {
+1 -1
View File
@@ -16,7 +16,7 @@ type Protinfo struct {
// String returns a list of enabled flags
func (prot *Protinfo) String() string {
boolStrings := make([]string, 0)
var boolStrings []string
if prot.Hairpin {
boolStrings = append(boolStrings, "Hairpin")
}
+2 -2
View File
@@ -119,7 +119,7 @@ func RouteList(link Link, family int) ([]Route, error) {
}
native := nl.NativeEndian()
res := make([]Route, 0)
var res []Route
for _, m := range msgs {
msg := nl.DeserializeRtMsg(m)
@@ -193,7 +193,7 @@ func RouteGet(destination net.IP) ([]Route, error) {
}
native := nl.NativeEndian()
res := make([]Route, 0)
var res []Route
for _, m := range msgs {
msg := nl.DeserializeRtMsg(m)
attrs, err := nl.ParseRouteAttr(m[msg.Len():])
@@ -84,7 +84,7 @@ func XfrmPolicyList(family int) ([]XfrmPolicy, error) {
return nil, err
}
res := make([]XfrmPolicy, 0)
var res []XfrmPolicy
for _, m := range msgs {
msg := nl.DeserializeXfrmUserpolicyInfo(m)
@@ -118,7 +118,7 @@ func XfrmStateList(family int) ([]XfrmState, error) {
return nil, err
}
res := make([]XfrmState, 0)
var res []XfrmState
for _, m := range msgs {
msg := nl.DeserializeXfrmUsersaInfo(m)
+12 -15
View File
@@ -52,33 +52,30 @@ func Get() (NsHandle, error) {
return GetFromThread(os.Getpid(), syscall.Gettid())
}
// GetFromName gets a handle to a named network namespace such as one
// created by `ip netns add`.
func GetFromName(name string) (NsHandle, error) {
fd, err := syscall.Open(fmt.Sprintf("/var/run/netns/%s", name), syscall.O_RDONLY, 0)
// GetFromPath gets a handle to a network namespace
// identified by the path
func GetFromPath(path string) (NsHandle, error) {
fd, err := syscall.Open(path, syscall.O_RDONLY, 0)
if err != nil {
return -1, err
}
return NsHandle(fd), nil
}
// GetFromName gets a handle to a named network namespace such as one
// created by `ip netns add`.
func GetFromName(name string) (NsHandle, error) {
return GetFromPath(fmt.Sprintf("/var/run/netns/%s", name))
}
// GetFromPid gets a handle to the network namespace of a given pid.
func GetFromPid(pid int) (NsHandle, error) {
fd, err := syscall.Open(fmt.Sprintf("/proc/%d/ns/net", pid), syscall.O_RDONLY, 0)
if err != nil {
return -1, err
}
return NsHandle(fd), nil
return GetFromPath(fmt.Sprintf("/proc/%d/ns/net", pid))
}
// GetFromThread gets a handle to the network namespace of a given pid and tid.
func GetFromThread(pid, tid int) (NsHandle, error) {
name := fmt.Sprintf("/proc/%d/task/%d/ns/net", pid, tid)
fd, err := syscall.Open(name, syscall.O_RDONLY, 0)
if err != nil {
return -1, err
}
return NsHandle(fd), nil
return GetFromPath(fmt.Sprintf("/proc/%d/task/%d/ns/net", pid, tid))
}
// GetFromDocker gets a handle to the network namespace of a docker container.
+1 -1
View File
@@ -3,5 +3,5 @@
package netns
const (
SYS_SETNS = 374
SYS_SETNS = 375
)