41 lines
1.3 KiB
Scheme
41 lines
1.3 KiB
Scheme
;;; Gash -- Guile As SHell
|
|
;;; Copyright © 2020 Timothy Sample <samplet@ngyro.com>
|
|
;;;
|
|
;;; This file is part of Gash.
|
|
;;;
|
|
;;; Gash is free software: you can redistribute it and/or modify
|
|
;;; it under the terms of the GNU General Public License as published by
|
|
;;; the Free Software Foundation, either version 3 of the License, or
|
|
;;; (at your option) any later version.
|
|
;;;
|
|
;;; Gash is distributed in the hope that it will be useful,
|
|
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;;; GNU General Public License for more details.
|
|
;;;
|
|
;;; You should have received a copy of the GNU General Public License
|
|
;;; along with Gash. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
(define-module (gash built-ins wait)
|
|
#:use-module (gash built-ins utils)
|
|
#:use-module (gash compat)
|
|
#:use-module (ice-9 match))
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; The 'wait' utility.
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define (main . args)
|
|
(let ((pids (map string->nonnegative-integer args)))
|
|
(match pids
|
|
((pid)
|
|
(match (false-if-exception (waitpid pid))
|
|
(#f 127)
|
|
((_ . status) (status:exit-val status))))
|
|
(_ (format (current-error-port)
|
|
"~a: wait: Invalid arguments."
|
|
(car (program-arguments)))
|
|
EXIT_FAILURE))))
|