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author | Franck Bui <fbui@suse.com> | 2022-10-25 13:54:10 +0200 |
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committer | Franck Bui <fbui@suse.com> | 2022-10-25 13:56:37 +0200 |
commit | 46e0b5dca7fa5368bccbf30a7d2569d93d994a44 (patch) | |
tree | 69a782bf53ad4e005864e14c314d58bc2e45af6b /src/random-seed | |
parent | ea37e1edf9bdaa5a90050d69454a132dc5d60360 (diff) | |
download | systemd-46e0b5dca7fa5368bccbf30a7d2569d93d994a44.tar.gz |
random-seed: clarify one comment
Diffstat (limited to 'src/random-seed')
-rw-r--r-- | src/random-seed/random-seed.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/random-seed/random-seed.c b/src/random-seed/random-seed.c index 7782509572..22ddf659ae 100644 --- a/src/random-seed/random-seed.c +++ b/src/random-seed/random-seed.c @@ -249,12 +249,13 @@ static int save_seed_file( if (!buf) return log_oom(); - /* Let's make this whole job asynchronous, i.e. let's make ourselves a barrier for proper - * initialization of the random pool. */ k = getrandom(buf, seed_size, GRND_NONBLOCK); if (k < 0 && errno == EAGAIN && synchronous) { + /* If we're asked to make ourselves a barrier for proper initialization of the random pool + * make this whole job synchronous by asking getrandom() to wait until the requested number + * of random bytes is available. */ log_notice("Kernel entropy pool is not initialized yet, waiting until it is."); - k = getrandom(buf, seed_size, 0); /* retry synchronously */ + k = getrandom(buf, seed_size, 0); } if (k < 0) log_debug_errno(errno, "Failed to read random data with getrandom(), falling back to /dev/urandom: %m"); |