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database: 'reset-timestamps' can optionally preserve permissions.

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* guix/store/database.scm (reset-timestamps): Add
 #:preserve-permissions? and honor it.
This commit is contained in:
Ludovic Courtès 2020-04-06 15:40:30 +02:00
parent 916ec91f23
commit 7fa6155b23
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1 changed files with 8 additions and 5 deletions
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13
guix/store/database.scm
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@ -1,6 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2019 Caleb Ristvedt <caleb.ristvedt@cune.org>
;;; Copyright © 2018 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018, 2020 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -228,16 +228,18 @@ (define* (sqlite-register db #:key path (references '())
;;; High-level interface.
;;;
(define (reset-timestamps file)
(define* (reset-timestamps file #:key preserve-permissions?)
"Reset the modification time on FILE and on all the files it contains, if
it's a directory. While at it, canonicalize file permissions."
it's a directory. Canonicalize file permissions unless PRESERVE-PERMISSIONS?
is true."
;; Note: We're resetting to one second after the Epoch like 'guix-daemon'
;; has always done.
(let loop ((file file)
(type (stat:type (lstat file))))
(case type
((directory)
(chmod file #o555)
(unless preserve-permissions?
(chmod file #o555))
(utime file 1 1 0 0)
(let ((parent file))
(for-each (match-lambda
@ -254,7 +256,8 @@ (define (reset-timestamps file)
((symlink)
(utime file 1 1 0 0 AT_SYMLINK_NOFOLLOW))
(else
(chmod file (if (executable-file? file) #o555 #o444))
(unless preserve-permissions?
(chmod file (if (executable-file? file) #o555 #o444)))
(utime file 1 1 0 0)))))
(define* (register-path path