Re: [PATCH] rand.c updates from FreeBSD RELENG_5

["William M. Grim" <wgrim@xxxxxxxx>]

Matthew Dillon wrote:
> :I have redone the rand.3 patch and attached it.  I tested it against 
> :what is currently in DFly's CVS and did not witness any problems.  Let 
> :me know how it goes.
> :
> :Thanks again,
> :Mike
>
>     Whoop, I was all ready to commit this but then noticed that, in fact,
>     you attached rand.c rather then rand.3.
>
>     If you could repost your cleaned up rand.3 I'll be able to finally get
>     this in the tree.

Note to self: lack of sleep == bad.

I have attached the appropriate patch now.

I hope everything is golden now :-)

--Mike
--- rand.3	2004-05-13 16:29:35.000000000 -0500
+++ rand.3.new	2004-05-12 15:51:53.000000000 -0500
@@ -34,7 +34,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)rand.3	8.1 (Berkeley) 6/4/93
-.\" $FreeBSD: src/lib/libc/stdlib/rand.3,v 1.4.2.5 2001/12/14 18:33:58 ru Exp $
+.\" $FreeBSD: src/lib/libc/stdlib/rand.3,v 1.14 2003/09/08 19:57:15 ru Exp $
 .\" $DragonFly: src/lib/libc/stdlib/rand.3,v 1.2 2003/06/17 04:26:46 dillon Exp $
 .\"
 .Dd May 25, 1999
@@ -43,6 +43,7 @@
 .Sh NAME
 .Nm rand ,
 .Nm srand ,
+.Nm sranddev ,
 .Nm rand_r
 .Nd bad random number generator
 .Sh LIBRARY
@@ -51,6 +52,8 @@
 .In stdlib.h
 .Ft void
 .Fn srand "unsigned seed"
+.Ft void
+.Fn sranddev void
 .Ft int
 .Fn rand void
 .Ft int
@@ -67,7 +70,7 @@
 of 0 to
 .Dv RAND_MAX
 (as defined by the header file
-.Aq Pa stdlib.h ) .
+.In stdlib.h ) .
 .Pp
 The
 .Fn srand
@@ -85,14 +88,24 @@
 value is provided, the functions are automatically
 seeded with a value of 1.
 .Pp
+The
+.Fn sranddev
+function initializes a seed using the
+.Xr random 4
+random number device which returns good random numbers,
+suitable for cryptographic use.
+.Pp
+The
 .Fn rand_r
+function
 provides the same functionality as
 .Fn rand .
 A pointer to the context value
 .Fa ctx
 must be supplied by the caller.
 .Sh SEE ALSO
-.Xr random 3
+.Xr random 3 ,
+.Xr random 4
 .Sh STANDARDS
 The
 .Fn rand