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author | kosaki <kosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-10-18 05:43:08 +0000 |
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committer | kosaki <kosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-10-18 05:43:08 +0000 |
commit | 6c060b2b581288f67417eabdcf20acc6f154001e (patch) | |
tree | cfcf7fdff116d8f80d02b82d4ee02dd189d39c4a /random.c | |
parent | 47f0a8f9d04cf1434a22dbfce04b05f1f546468f (diff) | |
download | ruby-6c060b2b581288f67417eabdcf20acc6f154001e.tar.gz |
* random.c (fill_random_bytes_urandom): add a comment why using
O_NONBLOCK and O_NOCTTY.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52181 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'random.c')
-rw-r--r-- | random.c | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -455,6 +455,11 @@ random_init(int argc, VALUE *argv, VALUE obj) static int fill_random_bytes_urandom(void *seed, size_t size) { + /* + O_NONBLOCK and O_NOCTTY is meaningless if /dev/urandom correctly point + to urandom device. But it protect from several strange hazard if + /dev/urandom is not urandom device. + */ int fd = rb_cloexec_open("/dev/urandom", # ifdef O_NONBLOCK O_NONBLOCK| |