lisp/mail/blessmail.el

   1 ;;; blessmail.el --- decide whether movemail needs special privileges -*- no-byte-compile: t -*-
   2
   3 ;; Copyright (C) 1994, 2001, 2002, 2003, 2004, 2005,
   4 ;;   2006, 2007, 2008 Free Software Foundation, Inc.
   5
   6 ;; Maintainer: FSF
   7 ;; Keywords: internal
   8
   9 ;; This file is part of GNU Emacs.
  10
  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, or (at your option)
  14 ;; any later version.
  15
  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.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24 ;; Boston, MA 02110-1301, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; This is loaded into a bare Emacs to create the blessmail script,
  29 ;; which (on systems that need it) is used during installation
  30 ;; to give appropriate permissions to movemail.
  31 ;;
  32 ;; It has to be done from lisp in order to be sure of getting the
  33 ;; correct value of rmail-spool-directory.
  34
  35 ;;; Code:
  36
  37 ;; These are no longer needed because we run this in emacs instead of temacs.
  38 ;; (message "Using load-path %s" load-path)
  39 ;; (load "paths.el")
  40 ;; It is not safe to load site-init.el here, because it might have things in it
  41 ;; that won't load properly unless all the rest of Emacs is loaded.
  42
  43 (let ((dirname (directory-file-name rmail-spool-directory))
  44       linkname attr modes)
  45   ;; Check for symbolic link
  46   (while (setq linkname (file-symlink-p dirname))
  47     (setq dirname (if (file-name-absolute-p linkname)
  48                       linkname
  49                     (concat (file-name-directory dirname) linkname))))
  50   (insert "#!/bin/sh\n")
  51   (setq attr (file-attributes dirname))
  52   (if (not (eq t (car attr)))
  53       (insert (format "echo %s is not a directory\n" rmail-spool-directory))
  54     (setq modes (nth 8 attr))
  55     (cond ((= ?w (aref modes 8))
  56            ;; Nothing needs to be done.
  57            )
  58           ((= ?w (aref modes 5))
  59            (insert "chgrp " (number-to-string (nth 3 attr))
  60                    " $* && chmod g+s $*\n"))
  61           ((= ?w (aref modes 2))
  62            (insert "chown " (number-to-string (nth 2 attr))
  63                    " $* && chmod u+s $*\n"))
  64           (t
  65            (insert "chown root $* && chmod u+s $*\n"))))
  66   (insert "echo mail directory = " dirname "\n"))
  67 (write-region (point-min) (point-max) "blessmail")
  68 (kill-emacs)
  69
  70 ;;; arch-tag: c3329fe2-f945-41a9-8b00-b4b038ff182f
  71 ;;; blessmail.el ends here