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store: Tolerate non-existent GC root directories.

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* guix/store/roots.scm (gc-roots): Wrap 'scandir*' call in 'catch'.
* tests/store-roots.scm ("gc-roots, initial"): New test.  Move
'open-connection' call below.
This commit is contained in:
Ludovic Courtès 2023-03-13 13:52:38 +01:00
parent 81231bf236
commit 1261ce1523
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GPG key ID: 090B11993D9AEBB5
2 changed files with 25 additions and 5 deletions
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12
guix/store/roots.scm
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@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2017, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2012-2014, 2017, 2019, 2023 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -105,7 +105,15 @@ (define canonical-root
(map (match-lambda
((file . properties)
(cons (scope file) properties)))
(scandir* directory regular?)))))
(catch 'system-error
(lambda ()
(scandir* directory regular?))
(lambda args
(if (= ENOENT
(system-error-errno
args))
'()
(apply throw args))))))))
(loop (append rest (map first sub-directories))
(append (map canonical-root (filter symlink? files))
roots)

18
tests/store-roots.scm
View file

@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2019, 2023 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
@ -21,14 +21,26 @@ (define-module (test-store-deduplication)
#:use-module (guix store)
#:use-module (guix store roots)
#:use-module ((guix utils) #:select (call-with-temporary-directory))
#:use-module ((guix build utils) #:select (delete-file-recursively))
#:use-module ((guix config) #:select (%state-directory))
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64))
(define %store
(open-connection))
(define %store #f)
(test-begin "store-roots")
(test-equal "gc-roots, initial"
(list (string-append %state-directory "/profiles"))
(begin
;; 'gc-roots' should gracefully handle lack of that directory.
(delete-file-recursively (string-append %state-directory "/profiles"))
(gc-roots)))
;; The 'open-connection' call below gets guix-daemon to create
;; %STATE-DIRECTORY/profiles.
(set! %store (open-connection))
(test-assert "gc-roots, regular root"
(let* ((item (add-text-to-store %store "something"
(random-text)))