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Merge pull request #3976 from devnexen/fbsd_dfly_upd

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Implements getrandom's wrapper for handful of BSD.
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Manuel Pégourié-Gonnard 2021-02-16 09:41:55 +01:00 committed by GitHub
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3
ChangeLog.d/getentropy.txt Normal file
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@ -0,0 +1,3 @@
Changes
* On recent enough versions of FreeBSD and DragonFlyBSD, the entropy module
now uses the getrandom syscall instead of reading from /dev/urandom.

15
library/entropy_poll.c
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@ -109,6 +109,21 @@ static int getrandom_wrapper( void *buf, size_t buflen, unsigned int flags )
#endif /* SYS_getrandom */
#endif /* __linux__ || __midipix__ */
#if defined(__FreeBSD__) || defined(__DragonFly__)
#include <sys/param.h>
#if (defined(__FreeBSD__) && __FreeBSD_version >= 1200000) || \
(defined(__DragonFly__) && __DragonFly_version >= 500700)
#include <errno.h>
#include <sys/random.h>
#define HAVE_GETRANDOM
static int getrandom_wrapper( void *buf, size_t buflen, unsigned int flags )
{
return getrandom( buf, buflen, flags );
}
#endif /* (__FreeBSD__ && __FreeBSD_version >= 1200000) ||
(__DragonFly__ && __DragonFly_version >= 500700) */
#endif /* __FreeBSD__ || __DragonFly__ */
/*
* Some BSD systems provide KERN_ARND.
* This is equivalent to reading from /dev/urandom, only it doesn't require an