Golang go_lxc_attach_run_wait Examples

Example #1

File: container.go Project: zanella/nomad

// RunCommandStatus attachs a shell and runs the command within the container.
// The process will wait for the command to finish and return the result of
// waitpid(), i.e. the process' exit status. An error is returned only when
// invocation of the command completely fails.
func (c *Container) RunCommandStatus(args []string, options AttachOptions) (int, error) {
	if len(args) == 0 {
		return -1, ErrInsufficientNumberOfArguments
	}

	if err := c.makeSure(isRunning); err != nil {
		return -1, err
	}

	c.mu.Lock()
	defer c.mu.Unlock()

	cargs := makeNullTerminatedArgs(args)
	if cargs == nil {
		return -1, ErrAllocationFailed
	}
	defer freeNullTerminatedArgs(cargs, len(args))

	cenv := makeNullTerminatedArgs(options.Env)
	if cenv == nil {
		return -1, ErrAllocationFailed
	}
	defer freeNullTerminatedArgs(cenv, len(options.Env))

	cenvToKeep := makeNullTerminatedArgs(options.EnvToKeep)
	if cenvToKeep == nil {
		return -1, ErrAllocationFailed
	}
	defer freeNullTerminatedArgs(cenvToKeep, len(options.EnvToKeep))

	cwd := C.CString(options.Cwd)
	defer C.free(unsafe.Pointer(cwd))

	ret := int(C.go_lxc_attach_run_wait(
		c.container,
		C.bool(options.ClearEnv),
		C.int(options.Namespaces),
		C.long(options.Arch),
		C.uid_t(options.UID),
		C.gid_t(options.GID),
		C.int(options.StdinFd),
		C.int(options.StdoutFd),
		C.int(options.StderrFd),
		cwd,
		cenv,
		cenvToKeep,
		cargs,
	))

	return ret, nil
}

Example #2

File: container.go Project: justinHume/go-lxc

// RunCommandWithClearEnvironment runs the user specified command inside the container
// and waits for it to exit. It clears all environment variables before running.
// stdinfd: fd to read input from
// stdoutfd: fd to write output to
// stderrfd: fd to write error output to
func (c *Container) RunCommandWithClearEnvironment(stdinfd, stdoutfd, stderrfd uintptr, args ...string) error {
	if args == nil {
		return ErrInsufficientNumberOfArguments
	}

	if err := c.makeSure(isDefined | isRunning); err != nil {
		return err
	}

	c.mu.Lock()
	defer c.mu.Unlock()

	cargs := makeNullTerminatedArgs(args)
	defer freeNullTerminatedArgs(cargs, len(args))

	if int(C.go_lxc_attach_run_wait(c.container, true, C.int(stdinfd), C.int(stdoutfd), C.int(stderrfd), cargs)) < 0 {
		return ErrAttachFailed
	}
	return nil
}