utils

Documentation

Index

• Constants
• func BridgeByName(name string) (*netlink.Bridge, error)
• func ConvertEnvs(m map[string]string) []string
• func CopyFile(src, dst string) (err error)
• func CopyFileContents(src, dst string) (err error)
• func CreateDirectory(path string, perm os.FileMode)
• func CreateFile(file, content string)
• func DefaultNetMTU() (string, error)
• func EthtoolTXOff(name string) error
• func FileExists(filename string) bool
• func LinkContainerNS(nspath, containerName string) error
• func ReadFileContent(file string) ([]byte, error)
• type EthtoolValue
• type IFReqData

Constants

const (
	SIOCETHTOOL     = 0x8946     // linux/sockios.h
	ETHTOOL_GTXCSUM = 0x00000016 // linux/ethtool.h
	ETHTOOL_STXCSUM = 0x00000017 // linux/ethtool.h
	IFNAMSIZ        = 16         // linux/if.h
)

Functions

func BridgeByName

func BridgeByName(name string) (*netlink.Bridge, error)

func ConvertEnvs

func ConvertEnvs(m map[string]string) []string

convertEnvs convert env variables passed as a map to a list of them

func CopyFile

func CopyFile(src, dst string) (err error)

CopyFile copies a file from src to dst. If src and dst files exist, and are the same, then return success. Otherwise, copy the file contents from src to dst.

func CopyFileContents

func CopyFileContents(src, dst string) (err error)

copyFileContents copies the contents of the file named src to the file named by dst. The file will be created if it does not already exist. If the destination file exists, all it's contents will be replaced by the contents of the source file.

func CreateDirectory

func CreateDirectory(path string, perm os.FileMode)

CreateDirectory creates a directory by a path with a mode/permission specified by perm. If directory exists, the function does not do anything.

func CreateFile

func CreateFile(file, content string)

func DefaultNetMTU

func DefaultNetMTU() (string, error)

getDefaultDockerMTU gets the MTU of a docker0 bridge interface if fails to get the MTU of docker0, returns "1500"

func EthtoolTXOff

func EthtoolTXOff(name string) error

EthtoolTXOff disables TX checksum offload on specified interface

func FileExists

func FileExists(filename string) bool

func LinkContainerNS

func LinkContainerNS(nspath, containerName string) error

linkContainerNS creates a symlink for containers network namespace so that it can be managed by iproute2 utility

func ReadFileContent

func ReadFileContent(file string) ([]byte, error)

Types

type EthtoolValue

type EthtoolValue struct {
	Cmd  uint32
	Data uint32
}

linux/ethtool.h 'struct ethtool_value'

type IFReqData

type IFReqData struct {
	Name [IFNAMSIZ]byte
	Data uintptr
}

linux/if.h 'struct ifreq'