tree 7964b20b7aaaa6bf6aaf210c2f3fbd98e894702b
parent 47f0cc48db34b37d81540b31bf6adf11bb7b578d
author Jens Axboe <jens.axboe@oracle.com> 1185443710 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1185443710 +0200

Fix verify random bytes filling

Shawn Lewis <shawnlewis@google.com> reports:

---

verify.c: fill_random_bytes() doesn't work as intended.

drand48 on linux returns a double whose value is evenly distributed between
0.0 and 0.1. This is not the same as having an 8-byte value where each bit
has the same chance of being 0 as it does of being 1.

I'd fix this but it should probably be done in a cross-platformish way and
I'm not quite sure how to do it. Maybe just use smaller randoms? Have an
os_random_uint32?

---

I just got rid of os_random_double() and used os_random_long(),
truncating that to an unsigned integer.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>