nsenter

package

v0.0.0-...-205da4a Latest Latest Go to latest Published: May 26, 2025 License: MIT Imports: 21 Imported by: 0

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Valid go.mod file
Redistributable license
Tagged version
Stable version
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Repository

gitee.com/anesec/chameleon

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Documentation ¶

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Index ¶

Constants
func CGroupNsId(options ...Option) (uint32, error)
func Execute(ctx context.Context, runnable Runnable, options ...Option) error
func HTTP(options ...Option) (*http.Client, error)
func MountNsId(options ...Option) (uint32, error)
func NetNsId(options ...Option) (uint32, error)
func NewReader(filename string, options ...Option) (io.ReadCloser, error)
func NewWriter(filename string, flag int, perm os.FileMode, options ...Option) (io.WriteCloser, error)
func PidNsId(options ...Option) (uint32, error)
func ReadFile(name string, options ...Option) ([]byte, error)
func Stat(name string, options ...Option) (os.FileInfo, error)
func UserNsId(options ...Option) (uint32, error)
func UtsNsId(options ...Option) (uint32, error)
func WriteFile(name string, data []byte, perm os.FileMode, options ...Option) error
type Command
- func (cmdline Command) Run(ctx context.Context) error
type Lambda
- func (fn Lambda) Run(ctx context.Context) error
type NsType
- func (nst NsType) String() string
type Option
- func Envs(envs ...string) Option
- func GID(gid int) Option
- func Output(output io.Writer) Option
- func Pid(pid int) Option
- func Procfs(procfs string) Option
- func Types(types ...NsType) Option
- func UID(uid int) Option
type Runnable
type Scanner
- func NewScanner(filename string, options ...Option) (*Scanner, error)
- func (s *Scanner) Close() error
- func (s *Scanner) Next() ([]byte, error)

Constants ¶

View Source

const (
	MNT  = syscall.CLONE_NEWNS
	UTS  = syscall.CLONE_NEWUTS
	IPC  = syscall.CLONE_NEWIPC
	USER = syscall.CLONE_NEWUSER
	NET  = syscall.CLONE_NEWNET
	PID  = syscall.CLONE_NEWPID
)

Variables ¶

This section is empty.

Functions ¶

func CGroupNsId ¶

func CGroupNsId(options ...Option) (uint32, error)

CGroupNsId reads cgroup namespace inode for specified process id and host procfs

func Execute ¶

func Execute(ctx context.Context, runnable Runnable, options ...Option) error

Execute executes runnable object in specified namespaces

func HTTP ¶

func HTTP(options ...Option) (*http.Client, error)

func MountNsId ¶

func MountNsId(options ...Option) (uint32, error)

MountNsId reads mount namespace inode for specified process id and host procfs

func NetNsId ¶

func NetNsId(options ...Option) (uint32, error)

NetNsId reads net namespace inode for specified process id and host procfs

func NewReader ¶

func NewReader(filename string, options ...Option) (io.ReadCloser, error)

NewReader creates a namespace file reader, which reads file from mount namespace bind with process id(host pid namespace) and host procfs

func NewWriter ¶

func NewWriter(filename string, flag int, perm os.FileMode, options ...Option) (io.WriteCloser, error)

NewWriter creates a namespace file writer, which write file to mount namespace bind with process id(host pid namespace) and host procfs

func PidNsId ¶

func PidNsId(options ...Option) (uint32, error)

PidNsId reads pid namespace inode for specified process id and host procfs

func ReadFile ¶

func ReadFile(name string, options ...Option) ([]byte, error)

ReadFile reads file in specified mount namespace bind to pid and procfs

func Stat ¶

func Stat(name string, options ...Option) (os.FileInfo, error)

Stat reads file stat information in specified mount namespace bind to pid and procfs

func UserNsId ¶

func UserNsId(options ...Option) (uint32, error)

UserNsId reads user namespace inode for specified process id and host procfs

func UtsNsId ¶

func UtsNsId(options ...Option) (uint32, error)

UtsNsId reads uts namespace inode for specified process id and host procfs

func WriteFile ¶

func WriteFile(name string, data []byte, perm os.FileMode, options ...Option) error

WriteFile writes file in specified mount namespace bind to pid and procfs

Types ¶

type Command ¶

type Command []string

func (Command) Run ¶

func (cmdline Command) Run(ctx context.Context) error

type Lambda ¶

type Lambda func(context.Context) error

func (Lambda) Run ¶

func (fn Lambda) Run(ctx context.Context) error

type NsType ¶

type NsType int

func (NsType) String ¶

func (nst NsType) String() string

type Option ¶

type Option interface {
	// contains filtered or unexported methods
}

func Envs ¶

func Envs(envs ...string) Option

func GID ¶

func GID(gid int) Option

func Output ¶

func Output(output io.Writer) Option

Output specify output writer for execution results, only works for Command

func Pid ¶

func Pid(pid int) Option

Pid specify which process attached to for namespaces

func Procfs ¶

func Procfs(procfs string) Option

Procfs specify host procfs, which is useful for using package in container that has bind host /proc into container or starts with host pid namespace

func Types ¶

func Types(types ...NsType) Option

Types specify namespace types while creating Namespace instance, supports NET, UTS, IPC, USER, and PID.

func UID ¶

func UID(uid int) Option

type Runnable ¶

type Runnable interface {
	Run(context.Context) error
}

type Scanner ¶

type Scanner struct {
	// contains filtered or unexported fields
}

Scanner represents a namespace file scanner which return a line for each Next() call

func NewScanner ¶

func NewScanner(filename string, options ...Option) (*Scanner, error)

NewScanner creates a namespace file scanner, which reads lines of specified file from mount namespace bind with process id(host pid namespace) and host procfs

func (*Scanner) Close ¶

func (s *Scanner) Close() error

func (*Scanner) Next ¶

func (s *Scanner) Next() ([]byte, error)

Next returns line of opened file, if returned data is nil, indicates EOF or failed with specified error

Source Files ¶

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