sys

Documentation

Index

• Constants
• Variables
• func AdjustOOMScore(pid, score int) error
• func CreateSequential(name string) (*os.File, error)
• func ForceRemoveAll(path string) error
• func GetLocalListener(path string, uid, gid int) (net.Listener, error)
• func GetOOMScoreAdj(pid int) (int, error)
• func IsAbs(path string) bool
• func MkdirAll(path string, _ os.FileMode) error
• func MkdirAllWithACL(path string, perm os.FileMode) error
• func OpenFileSequential(name string, flag int, _ os.FileMode) (*os.File, error)
• func OpenSequential(name string) (*os.File, error)
• func SetOOMScore(pid, score int) error

Constants

const (
	// OOMScoreMaxKillable is not implemented on non Linux
	OOMScoreMaxKillable = 0
	// OOMScoreAdjMax is not implemented on non Linux
	OOMScoreAdjMax = 0
)

const (
	// SddlAdministratorsLocalSystem is local administrators plus NT AUTHORITY\System
	SddlAdministratorsLocalSystem = "D:P(A;OICI;GA;;;BA)(A;OICI;GA;;;SY)"
)

Variables

var RunningInUserNS = userns.RunningInUserNS

RunningInUserNS detects whether we are currently running in a user namespace. Deprecated: use github.com/containerd/containerd/pkg/userns.RunningInUserNS instead.

Functions

func AdjustOOMScore

func AdjustOOMScore(pid, score int) error

AdjustOOMScore sets the oom score for the provided pid. If the provided score is out of range (-1000 - 1000), it is clipped to the min/max value.

Not implemented on Windows

func CreateSequential

func CreateSequential(name string) (*os.File, error)

CreateSequential creates the named file with mode 0666 (before umask), truncating it if it already exists. If successful, methods on the returned File can be used for I/O; the associated file descriptor has mode O_RDWR. If there is an error, it will be of type *PathError.

func ForceRemoveAll

func ForceRemoveAll(path string) error

ForceRemoveAll is the same as os.RemoveAll, but is aware of io.containerd.snapshotter.v1.windows and uses hcsshim to unmount and delete container layers contained therein, in the correct order, when passed a containerd root data directory (i.e. the `--root` directory for containerd).

func GetLocalListener

func GetLocalListener(path string, uid, gid int) (net.Listener, error)

GetLocalListener returns a Listernet out of a named pipe. `path` must be of the form of `\\.\pipe\<pipename>` (see https://msdn.microsoft.com/en-us/library/windows/desktop/aa365150)

func GetOOMScoreAdj

func GetOOMScoreAdj(pid int) (int, error)

GetOOMScoreAdj gets the oom score for a process

Not implemented on Windows

func IsAbs

func IsAbs(path string) bool

IsAbs is a platform-specific wrapper for filepath.IsAbs. On Windows, golang filepath.IsAbs does not consider a path \windows\system32 as absolute as it doesn't start with a drive-letter/colon combination. However, in docker we need to verify things such as WORKDIR /windows/system32 in a Dockerfile (which gets translated to \windows\system32 when being processed by the daemon. This SHOULD be treated as absolute from a docker processing perspective.

func MkdirAll

func MkdirAll(path string, _ os.FileMode) error

MkdirAll implementation that is volume path aware for Windows. It can be used as a drop-in replacement for os.MkdirAll()

func MkdirAllWithACL

func MkdirAllWithACL(path string, perm os.FileMode) error

MkdirAllWithACL is a wrapper for MkdirAll that creates a directory ACL'd for Builtin Administrators and Local System.

func OpenFileSequential

func OpenFileSequential(name string, flag int, _ os.FileMode) (*os.File, error)

OpenFileSequential is the generalized open call; most users will use Open or Create instead. If there is an error, it will be of type *PathError.

func OpenSequential

func OpenSequential(name string) (*os.File, error)

OpenSequential opens the named file for reading. If successful, methods on the returned file can be used for reading; the associated file descriptor has mode O_RDONLY. If there is an error, it will be of type *PathError.

func SetOOMScore

func SetOOMScore(pid, score int) error

SetOOMScore sets the oom score for the process

Not implemented on Windows