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From: Alexander Motin <mav@FreeBSD.org>
Date: Sat, 10 Sep 2016 09:37:41 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r305679 - head/sys/cddl/compat/opensolaris/sys
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Author: mav
Date: Sat Sep 10 09:37:41 2016
New Revision: 305679
URL: https://svnweb.freebsd.org/changeset/base/305679

Log:
  Switch random_get_pseudo_bytes() shim to arc4rand().
  
  Our shim for Solaris random_get_bytes() uses read_random(), that looks
  reasonable, since it guaranties reliably seeded random data.  On the other
  side Solaris random_get_pseudo_bytes() does not provide this guarantie,
  and its original Solaris implementation is equivalent to our arc4rand(),
  using software crypto without stressing slower hardware RNG.

Modified:
  head/sys/cddl/compat/opensolaris/sys/random.h

Modified: head/sys/cddl/compat/opensolaris/sys/random.h
==============================================================================
--- head/sys/cddl/compat/opensolaris/sys/random.h	Sat Sep 10 09:00:12 2016	(r305678)
+++ head/sys/cddl/compat/opensolaris/sys/random.h	Sat Sep 10 09:37:41 2016	(r305679)
@@ -32,6 +32,6 @@
 #include_next <sys/random.h>
 
 #define	random_get_bytes(p, s)		read_random((p), (int)(s))
-#define	random_get_pseudo_bytes(p, s)	read_random((p), (int)(s))
+#define	random_get_pseudo_bytes(p, s)	arc4rand((p), (int)(s), 0)
 
 #endif	/* !_OPENSOLARIS_SYS_RANDOM_H_ */