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emacs/lisp/mail/blessmail.el
1994-04-28 03:34:14 +00:00

66 lines
2.1 KiB
EmacsLisp

;;; blessmail.el --- Decide whether movemail needs special privileges.
;;; Copyright (C) 1994 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: internal
;; This file is part of GNU Emacs.
;; GNU Emacs 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 2, or (at your option)
;; any later version.
;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
;;; Commentary:
;; This is loaded into a bare Emacs to create the blessmail script,
;; which (on systems that need it) is used during installation
;; to give appropriate permissions to movemail.
;;
;; It has to be done from lisp in order to be sure of getting the
;; correct value of rmail-spool-directory.
;;; Code:
(message "Using load-path %s" load-path)
(load "paths.el")
(load "site-init" t)
(let ((dirname rmail-spool-directory) linkname attr modes)
;; Check for symbolic link
(while (setq linkname (file-symlink-p dirname))
(setq dirname (if (file-name-absolute-p linkname)
linkname
(concat (file-name-directory dirname) linkname))))
(setq attr (file-attributes dirname))
(or (eq t (car attr))
(signal 'error
(list (format "%s is not a directory" rmail-spool-directory))))
(setq modes (nth 8 attr))
(insert "#!/bin/sh\n")
(cond
((= ?w (aref modes 8))
(insert "exit 0"))
((= ?w (aref modes 5))
(insert "chgrp " (number-to-string (nth 3 attr))
" $* && chmod g+s $*\n"))
((= ?w (aref modes 2))
(insert "chown " (number-to-string (nth 2 attr))
" $* && chmod u+s $*\n"))
(t
(insert "chown root $* && chmod u+s $*\n"))))
(write-region (point-min) (point-max) "blessmail")
(kill-emacs)
;;; blessmail.el ends here