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69 lines
2.5 KiB
EmacsLisp
69 lines
2.5 KiB
EmacsLisp
;;; blessmail.el --- decide whether movemail needs special privileges -*- no-byte-compile: t -*-
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;; Copyright (C) 1994, 2001-2020 Free Software Foundation, Inc.
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: internal
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;; Package: emacs
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This is loaded into a bare Emacs to create the blessmail script,
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;; which (on systems that need it) is used during installation
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;; to give appropriate permissions to movemail.
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;;
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;; It has to be done from lisp in order to be sure of getting the
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;; correct value of rmail-spool-directory.
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;;; Code:
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;; These are no longer needed because we run this in emacs instead of temacs.
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;; (message "Using load-path %s" load-path)
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;; (load "paths.el")
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;; It is not safe to load site-init.el here, because it might have things in it
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;; that won't load properly unless all the rest of Emacs is loaded.
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(let ((dirname (directory-file-name rmail-spool-directory))
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linkname attr modes)
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;; Check for symbolic link
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(while (setq linkname (file-symlink-p dirname))
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(setq dirname (if (file-name-absolute-p linkname)
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linkname
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(concat (file-name-directory dirname) linkname))))
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(insert "#!/bin/sh\n")
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(setq attr (file-attributes dirname))
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(if (not (eq t (car attr)))
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(insert (format "echo %s is not a directory\n" rmail-spool-directory))
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(setq modes (file-attribute-modes attr))
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(cond ((= ?w (aref modes 8))
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;; Nothing needs to be done.
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)
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((= ?w (aref modes 5))
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(insert "chgrp " (number-to-string (file-attribute-group-id attr))
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" $* && chmod g+s $*\n"))
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((= ?w (aref modes 2))
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(insert "chown " (number-to-string (file-attribute-user-id attr))
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" $* && chmod u+s $*\n"))
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(t
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(insert "chown root $* && chmod u+s $*\n"))))
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(insert "echo mail directory = " dirname "\n"))
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(write-region (point-min) (point-max) "blessmail")
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(kill-emacs)
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;;; blessmail.el ends here
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