diff options
Diffstat (limited to 'gnu/services/base.scm')
| -rw-r--r-- | gnu/services/base.scm | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gnu/services/base.scm b/gnu/services/base.scm index de1321d763..e75c56828e 100644 --- a/gnu/services/base.scm +++ b/gnu/services/base.scm @@ -573,7 +573,13 @@ file systems, as well as corresponding @file{/etc/fstab} entries."))) (lambda (seed) (call-with-output-file "/dev/urandom" (lambda (urandom) - (dump-port seed urandom)))))) + (dump-port seed urandom) + + ;; Writing SEED to URANDOM isn't enough: we must + ;; also tell the kernel to account for these + ;; extra bits of entropy. + (let ((bits (* 8 (stat:size (stat seed))))) + (add-to-entropy-count urandom bits))))))) ;; Try writing from /dev/hwrng into /dev/urandom. ;; It seems that the file /dev/hwrng always exists, even @@ -590,7 +596,9 @@ file systems, as well as corresponding @file{/etc/fstab} entries."))) (when buf (call-with-output-file "/dev/urandom" (lambda (urandom) - (put-bytevector urandom buf))))) + (put-bytevector urandom buf) + (let ((bits (* 8 (bytevector-length buf)))) + (add-to-entropy-count urandom bits)))))) ;; Immediately refresh the seed in case the system doesn't ;; shut down cleanly. |