Merge from origin/emacs-24
[emacs.git] / lisp / mail / blessmail.el
blob3290f30815af976f367e88b1dab486413fb7f68e
1 ;;; blessmail.el --- decide whether movemail needs special privileges -*- no-byte-compile: t -*-
3 ;; Copyright (C) 1994, 2001-2015 Free Software Foundation, Inc.
5 ;; Maintainer: emacs-devel@gnu.org
6 ;; Keywords: internal
7 ;; Package: emacs
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;; This is loaded into a bare Emacs to create the blessmail script,
27 ;; which (on systems that need it) is used during installation
28 ;; to give appropriate permissions to movemail.
30 ;; It has to be done from lisp in order to be sure of getting the
31 ;; correct value of rmail-spool-directory.
33 ;;; Code:
35 ;; These are no longer needed because we run this in emacs instead of temacs.
36 ;; (message "Using load-path %s" load-path)
37 ;; (load "paths.el")
38 ;; It is not safe to load site-init.el here, because it might have things in it
39 ;; that won't load properly unless all the rest of Emacs is loaded.
41 (let ((dirname (directory-file-name rmail-spool-directory))
42 linkname attr modes)
43 ;; Check for symbolic link
44 (while (setq linkname (file-symlink-p dirname))
45 (setq dirname (if (file-name-absolute-p linkname)
46 linkname
47 (concat (file-name-directory dirname) linkname))))
48 (insert "#!/bin/sh\n")
49 (setq attr (file-attributes dirname))
50 (if (not (eq t (car attr)))
51 (insert (format "echo %s is not a directory\n" rmail-spool-directory))
52 (setq modes (nth 8 attr))
53 (cond ((= ?w (aref modes 8))
54 ;; Nothing needs to be done.
56 ((= ?w (aref modes 5))
57 (insert "chgrp " (number-to-string (nth 3 attr))
58 " $* && chmod g+s $*\n"))
59 ((= ?w (aref modes 2))
60 (insert "chown " (number-to-string (nth 2 attr))
61 " $* && chmod u+s $*\n"))
63 (insert "chown root $* && chmod u+s $*\n"))))
64 (insert "echo mail directory = " dirname "\n"))
65 (write-region (point-min) (point-max) "blessmail")
66 (kill-emacs)
68 ;;; blessmail.el ends here