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34 lines
1.5 KiB
34 lines
1.5 KiB
8 months ago
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From 22a598fa626bf440127c1dd2a6b116514869752a Mon Sep 17 00:00:00 2001
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From: Franck Bui <fbui@suse.com>
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Date: Tue, 25 Oct 2022 13:54:10 +0200
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Subject: [PATCH] random-seed: clarify one comment
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(cherry picked from commit 46e0b5dca7fa5368bccbf30a7d2569d93d994a44)
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Related: RHEL-16952
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---
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src/random-seed/random-seed.c | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/src/random-seed/random-seed.c b/src/random-seed/random-seed.c
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index 7782509572..22ddf659ae 100644
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--- a/src/random-seed/random-seed.c
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+++ b/src/random-seed/random-seed.c
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@@ -249,12 +249,13 @@ static int save_seed_file(
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if (!buf)
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return log_oom();
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- /* Let's make this whole job asynchronous, i.e. let's make ourselves a barrier for proper
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- * initialization of the random pool. */
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k = getrandom(buf, seed_size, GRND_NONBLOCK);
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if (k < 0 && errno == EAGAIN && synchronous) {
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+ /* If we're asked to make ourselves a barrier for proper initialization of the random pool
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+ * make this whole job synchronous by asking getrandom() to wait until the requested number
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+ * of random bytes is available. */
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log_notice("Kernel entropy pool is not initialized yet, waiting until it is.");
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- k = getrandom(buf, seed_size, 0); /* retry synchronously */
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+ k = getrandom(buf, seed_size, 0);
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}
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if (k < 0)
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log_debug_errno(errno, "Failed to read random data with getrandom(), falling back to /dev/urandom: %m");
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