From 6a488a3504b345b193e24dfdba2a2ac6b1db1234 Mon Sep 17 00:00:00 2001 From: Ludovic Courtès Date: Mon, 6 Apr 2020 15:16:09 +0200 Subject: vm: Preserve file permissions on /dev. Previously, when REGISTER-CLOSURES? was false, we'd set all the files under /dev to #o644, including /dev/null, /dev/zero, etc. * gnu/build/vm.scm (root-partition-initializer): Call 'reset-timestamps' separately for /dev, with #:preserve-permissions? #t. --- gnu/build/vm.scm | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'gnu/build') diff --git a/gnu/build/vm.scm b/gnu/build/vm.scm index 63140f1cee..84bb2592e2 100644 --- a/gnu/build/vm.scm +++ b/gnu/build/vm.scm @@ -33,6 +33,7 @@ #:use-module (guix records) #:use-module ((guix combinators) #:select (fold2)) #:use-module (ice-9 format) + #:use-module (ice-9 ftw) #:use-module (ice-9 match) #:use-module (ice-9 regex) #:use-module (ice-9 popen) @@ -419,7 +420,16 @@ system that is passed to 'populate-root-file-system'." ;; 'register-closure' resets timestamps and everything, so no need to do it ;; once more in that case. (unless register-closures? - (reset-timestamps target)))) + ;; 'reset-timestamps' also resets file permissions; do that everywhere + ;; except on /dev so that /dev/null remains writable, etc. + (for-each (lambda (directory) + (reset-timestamps (string-append target "/" directory))) + (scandir target + (match-lambda + ((or "." ".." "dev") #f) + (_ #t)))) + (reset-timestamps (string-append target "/dev") + #:preserve-permissions? #t)))) (define (register-bootcfg-root target bootcfg) "On file system TARGET, register BOOTCFG as a GC root." -- cgit v1.2.3