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archive: Warn about replacing an ACL symlink.

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* guix/scripts/archive.scm (authorize-key): Warn when %ACL-FILE is a
symbolic link and print an additional hint for Guix System users.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Tobias Geerinckx-Rice 2020-11-13 21:17:53 +01:00
parent 7140c55d17
commit 5d15733c42
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1 changed files with 11 additions and 0 deletions
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guix/scripts/archive.scm
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@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
;;;
;;; This file is part of GNU Guix.
;;;
@ -310,6 +311,16 @@ the input port."
(leave (G_ "failed to read public key: ~a: ~a~%")
(error-source err) (error-string err)))))
;; Warn about potentially volatile ACLs, but continue: system reconfiguration
;; might not be possible without (newly-authorized) substitutes.
(let ((stat (false-if-exception (lstat %acl-file))))
(when (and stat (eq? 'symlink (stat:type (lstat %acl-file))))
(warning (G_ "replacing symbolic link ~a with a regular file~%")
%acl-file)
(when (string-prefix? (%store-prefix) (readlink %acl-file))
(display-hint (G_ "On Guix System, add public keys to the
@code{authorized-keys} field of your @code{operating-system} instead.")))))
(let ((key (read-key))
(acl (current-acl)))
(unless (eq? 'public-key (canonical-sexp-nth-data key 0))