diff options
author | jamie <jamie@FreeBSD.org> | 2010-10-19 21:32:13 +0000 |
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committer | jamie <jamie@FreeBSD.org> | 2010-10-19 21:32:13 +0000 |
commit | 09f9c897d33c41618ada06fbbcf1a9b3812dee53 (patch) | |
tree | af2ff90c73b266b86d086d66705c8cc92cce3b7b /lib/libc/stdlib/rand.3 | |
parent | 831bbfaf753dc145ab80d1807336d4fb9ef8dffe (diff) | |
download | FreeBSD-src-09f9c897d33c41618ada06fbbcf1a9b3812dee53.zip FreeBSD-src-09f9c897d33c41618ada06fbbcf1a9b3812dee53.tar.gz |
A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.
Diffstat (limited to 'lib/libc/stdlib/rand.3')
-rw-r--r-- | lib/libc/stdlib/rand.3 | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/lib/libc/stdlib/rand.3 b/lib/libc/stdlib/rand.3 deleted file mode 100644 index 3eb1a1d..0000000 --- a/lib/libc/stdlib/rand.3 +++ /dev/null @@ -1,126 +0,0 @@ -.\" Copyright (c) 1990, 1991, 1993 -.\" The Regents of the University of California. All rights reserved. -.\" -.\" This code is derived from software contributed to Berkeley by -.\" the American National Standards Committee X3, on Information -.\" Processing Systems. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" 4. Neither the name of the University nor the names of its contributors -.\" may be used to endorse or promote products derived from this software -.\" without specific prior written permission. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND -.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE -.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -.\" SUCH DAMAGE. -.\" -.\" @(#)rand.3 8.1 (Berkeley) 6/4/93 -.\" $FreeBSD$ -.\" -.Dd October 6, 2010 -.Dt RAND 3 -.Os -.Sh NAME -.Nm rand , -.Nm srand , -.Nm sranddev , -.Nm rand_r -.Nd bad random number generator -.Sh LIBRARY -.Lb libc -.Sh SYNOPSIS -.In stdlib.h -.Ft void -.Fn srand "unsigned seed" -.Ft void -.Fn sranddev void -.Ft int -.Fn rand void -.Ft int -.Fn rand_r "unsigned *ctx" -.Sh DESCRIPTION -.Bf -symbolic -These interfaces are obsoleted by -.Xr random 3 . -.Ef -.Pp -The -.Fn rand -function computes a sequence of pseudo-random integers in the range -of 0 to -.Dv RAND_MAX -(as defined by the header file -.In stdlib.h ) . -.Pp -The -.Fn srand -function sets its argument -.Fa seed -as the seed for a new sequence of -pseudo-random numbers to be returned by -.Fn rand . -These sequences are repeatable by calling -.Fn srand -with the same seed value. -.Pp -If no -.Fa seed -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. -However, the -.Fn rand -function still remains unsuitable 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. -.Pp -For better generator quality, use -.Xr random 3 -or -.Xr lrand48 3 . -Applications requiring cryptographic quality randomness should use -.Xr arc4random 3 . -.Sh SEE ALSO -.Xr arc4random 3 , -.Xr lrand48 3 , -.Xr random 3 , -.Xr random 4 -.Sh STANDARDS -The -.Fn rand -and -.Fn srand -functions -conform to -.St -isoC . -.Pp -The -.Fn rand_r -function is as proposed in the POSIX.4a Draft #6 document. |