ENTROPY_CAPACITY
#define MINENTROPYBYTES ENTROPY_CAPACITY
error = entropy_request(ENTROPY_CAPACITY, ENTROPY_WAIT|ENTROPY_SIG);
(void)entropy_request(ENTROPY_CAPACITY, flags);
unsigned cost = MIN(len, ENTROPY_CAPACITY)*NBBY;
kn->kn_data = ENTROPY_CAPACITY; /* bytes */
(*rs->get)(ENTROPY_CAPACITY, rs->getarg);
nbytes = MIN(nbytes, ENTROPY_CAPACITY);
pstat->maxentropy = ENTROPY_CAPACITY*NBBY; /* bits */
MIN(rdata->len, ENTROPY_CAPACITY)*NBBY);
n = MIN(n, ENTROPY_CAPACITY);
CTASSERT(ENTROPY_CAPACITY <= RANDOM_BUFSIZE);