wireguard-openbsd/lib/libcrypto/arc4random/getentropy_linux.c, branch jd/queueboosts WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/lib/libcrypto/arc4random/getentropy_linux.c?h=jd%2Fqueueboosts 2020-05-17T14:44:20Z As done everywhere else, use a local version of MINIMUM() and avoid 2020-05-17T14:44:20Z deraadt deraadt@openbsd.org 2020-05-17T14:44:20Z urn:sha1:557f50bebc1500345a39cc6f8881a4b155a2959b conflict against a potential define min() from some other scope. Saw a mention somewhere a while back that the gotdata() function in 2018-11-20T08:04:28Z deraadt deraadt@openbsd.org 2018-11-20T08:04:28Z urn:sha1:03b209d2bddddd6fe333a3c8aabf014de1b406ec here could creates non-uniformity since very short fetches of 0 would be excluded. blocks of 0 are just as random as any other data, including blocks of 4 4 4.. This is a misguided attempt to identify errors from the entropy churn/gather code doesn't make sense, errors don't happen. ok bcook ensure SYS_getrandom and GRND_NONBLOCK are both defined before using getrandom(2) 2018-03-13T22:53:28Z bcook bcook@openbsd.org 2018-03-13T22:53:28Z urn:sha1:e698281d1756730aea0e267a621d18672518ab39 Based on discussion here https://github.com/libressl-portable/openbsd/pull/82 Suggested fix from jsing@ Switch Linux getrandom() usage to non-blocking mode, continuing to 2017-04-29T18:43:31Z beck beck@openbsd.org 2017-04-29T18:43:31Z urn:sha1:edb2eeb7da8494998d0073f8aaeb8478cee5e00b use fallback mechanims if unsuccessful. The design of Linux getrandom is broken. It has an uninitialized phase coupled with blocking behaviour, which is unacceptable from within a library at boot time without possible recovery. ok deraadt@ jsing@ Update the link for the getentropy(2) manual to man.openbsd.org/ 2016-08-07T03:27:21Z tb tb@openbsd.org 2016-08-07T03:27:21Z urn:sha1:b8461433ba0ae3a060ab82e618da25ae2f3ba5dd ok deraadt@ fix typo in comment; ok beck 2016-04-19T20:20:24Z tj tj@openbsd.org 2016-04-19T20:20:24Z urn:sha1:2e9828cb3441b8757763d0a3eedf1693ff471763 unify files further 2015-09-11T11:52:55Z deraadt deraadt@openbsd.org 2015-09-11T11:52:55Z urn:sha1:044fc755ab8a41e1db871f293b6da2332fa31ad2 unify versions, so they are easier to diff. 2015-08-25T17:26:43Z deraadt deraadt@openbsd.org 2015-08-25T17:26:43Z urn:sha1:092b0306084405bbbac0cf79fe62e59790e51b55 Remove unneeded sys/sysctl.h on linux. 2015-06-13T02:33:58Z bcook bcook@openbsd.org 2015-06-13T02:33:58Z urn:sha1:ca56f3f6841bf723d8b1be709945db0730d67b3e This only provides the sysctl wrapper in glibc, which we do not use and is not available in other libc implementations for Linux. Thanks to ncopa from github. Not all Linux libc's include linux/sysctl.h in sys/sysctl.h. 2015-04-27T03:37:06Z bcook bcook@openbsd.org 2015-04-27T03:37:06Z urn:sha1:3e3a5746bf2e82123111ef7a676cdb9ce1e1ea13 Include it if we have the sysctl syscall.