utils

package
v3.1.2 Latest Latest
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Published: Apr 21, 2021 License: Apache-2.0 Imports: 18 Imported by: 10

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Index

Constants

This section is empty.

Variables

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var ErrDetach = define.ErrDetach

ErrDetach is an error indicating that the user manually detached from the container.

Functions

func CopyDetachable

func CopyDetachable(dst io.Writer, src io.Reader, keys []byte) (written int64, err error)

CopyDetachable is similar to io.Copy but support a detach key sequence to break out.

func ExecCmd

func ExecCmd(name string, args ...string) (string, error)

ExecCmd executes a command with args and returns its output as a string along with an error, if any

func ExecCmdWithStdStreams

func ExecCmdWithStdStreams(stdin io.Reader, stdout, stderr io.Writer, env []string, name string, args ...string) error

ExecCmdWithStdStreams execute a command with the specified standard streams.

func GetCgroupProcess

func GetCgroupProcess(pid int) (string, error)

GetCgroupProcess returns the cgroup for the specified process process.

func GetOwnCgroup

func GetOwnCgroup() (string, error)

GetOwnCgroup returns the cgroup for the current process.

func MoveUnderCgroupSubtree

func MoveUnderCgroupSubtree(subtree string) error

MoveUnderCgroupSubtree moves the PID under a cgroup subtree.

func RemoveScientificNotationFromFloat

func RemoveScientificNotationFromFloat(x float64) (float64, error)

RemoveScientificNotationFromFloat returns a float without any scientific notation if the number has any. golang does not handle conversion of float64s that have scientific notation in them and otherwise stinks. please replace this if you have a better implementation.

func RunUnderSystemdScope

func RunUnderSystemdScope(pid int, slice string, unitName string) error

RunUnderSystemdScope adds the specified pid to a systemd scope

func Tar

func Tar(source string) (io.ReadCloser, error)

Tar creates a tarball from source and returns a readcloser of it

func TarToFilesystem

func TarToFilesystem(source string, tarball *os.File) error

TarToFilesystem creates a tarball from source and writes to an os.file provided

func UntarToFileSystem

func UntarToFileSystem(dest string, tarball *os.File, options *archive.TarOptions) error

UntarToFileSystem untars an os.file of a tarball to a destination in the filesystem

Types

This section is empty.

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