util.crand: Comment about getrandom

1 files changed, 4 insertions, 1 deletions

diff --git a/util-src/crand.c b/util-src/crand.c
index aa3379c2..7dd71a92 100644
--- a/util-src/crand.c
+++ b/util-src/crand.c
@@ -34,7 +34,10 @@
 #error getrandom() requires Linux 3.17 or later
 #endif
 
-/* Was this not supposed to be a function? */
+/*
+ * This acts like a read from /dev/urandom with the exception that it
+ * *does* block if the entropy pool is not yet initialized.
+ */
 int getrandom(void *buf, size_t len, int flags) {
 	return syscall(SYS_getrandom, buf, len, flags);
 }