Software / code / prosody
Changeset
12446:e54b8a5e35ad 0.12
util.random: Test whether util.crand works before using it (fix #1734)
util.crand can be configured at compile time to use the Linux
getrandom() system call, available from Linux 3.17, but it is still
possible to load it with an older kernel lacking that system call, where
attempting to use it throws an ENOSYS error.
By testing for this on load we can fall back to /dev/urandom in this
case.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sat, 02 Apr 2022 16:33:27 +0200 |
| parents | 12444:b33558969b3e |
| children | 12447:07d25714c40c 12448:fb7e76c1ad1c |
| files | util/random.lua |
| diffstat | 1 files changed, 1 insertions(+), 1 deletions(-) [+] |
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--- a/util/random.lua Mon Mar 28 14:53:24 2022 +0100 +++ b/util/random.lua Sat Apr 02 16:33:27 2022 +0200 @@ -7,7 +7,7 @@ -- local ok, crand = pcall(require, "util.crand"); -if ok then return crand; end +if ok and pcall(crand.bytes, 1) then return crand; end local urandom, urandom_err = io.open("/dev/urandom", "r");
