utils

func CmdAndArgs ¶

func CmdAndArgs(args []string) (command string, argv []string)

func CopyFile ¶

func CopyFile(src, dst string) error

CopyFile

func CreateDir ¶

func CreateDir(dir string) error

CreateDir creates a directory if not exist

func Extract ¶

func Extract(tarball, target string) error

Extract untars both .tar and .tar.gz files.

func GenIPAddress ¶

func GenIPAddress() string

GenIPAddress generates ip address randomly (and dummy). NOTE(kiennt26): It doesn't check this IP address is used or not, as I assume there is just only 1 container run at time.

func GenTemplate ¶

func GenTemplate(name, tempStr string, input any) error

GenTemplate inits and execute the given template

func GenUID ¶

func GenUID() string

GenUID returns a random string

func InitKokerDirs ¶

func InitKokerDirs() error

InitKokerDirs creates all related directories

func SetNamespace ¶

func SetNamespace(pid string, flag int) error

SetNamespace calls setns syscall for set of flags. It changes current process namespace to namespace of another process which can be specified by pid.

NOTE: A process may not be reassociated with a new mount namespace if it is multi-threaded. Changing the mount namespace requires that the caller possess both CAP_SYS_CHROOT and CAP_SYS_ADMIN capabilities in its own user namespace and CAP_SYS_ADMIN in the target mount namespace.