BWFM_RANDOM_SEED_LENGTH
footer.length = htole32(BWFM_RANDOM_SEED_LENGTH);
rndbuf = malloc(BWFM_RANDOM_SEED_LENGTH, M_TEMP, M_WAITOK);
arc4random_buf(rndbuf, BWFM_RANDOM_SEED_LENGTH);
addr -= BWFM_RANDOM_SEED_LENGTH;
for (i = 0; i < BWFM_RANDOM_SEED_LENGTH; i++)
free(rndbuf, M_TEMP, BWFM_RANDOM_SEED_LENGTH);