Commit Graph

25 Commits

Author SHA1 Message Date
Warner Losh
c879ae3536 Per Regents of the University of Calfornia letter, remove advertising
clause.

# If I've done so improperly on a file, please let me know.
2007-01-09 00:28:16 +00:00
David Schultz
307649e2f3 Use 'uint32_t' instead of 'long' when a 32-bit integer is intended.
This results in no functional change, aside from fixing a data
corruption bug on LP64 platforms.  The code here could still use a
significant amount of cleanup.

PR:		56502
Submitted by:	hrs (earlier version)
2004-01-20 03:02:18 +00:00
Andrey A. Chernov
40220dde01 For type 0 rng lower initial drop to 50, it is enough to hide linearity
Reorganize historic #ifdef section
2003-08-10 17:49:55 +00:00
Andrey A. Chernov
ddd972a9bd For rand(3) and random(3) TYPE_0 drop NSHUFF values right after srand{om}()
to remove part of seed -> 1st value correlation. Correlation still remains
because of algorithm limits. Note that old algorithm have even stronger
correlation, especially in the lower bits area, but not eye-visible, as
current one.
2003-02-04 11:24:08 +00:00
Andrey A. Chernov
2f5ef51de2 Park & Miller PRNG can be safely initialized with any value but 0 and stuck
at 0 as designed. Its BSD adaptation tries to fight it by mapping 0 to
2147483647 after calculation, but this method not works since 2147483647
seed returns to 0 again on the next interation. Instead of after calculation
mapping, map 0 to another value _before_ calculation, so it never stucks.
2003-02-03 10:22:12 +00:00
David E. O'Brien
333fc21e3c Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.
2002-03-22 21:53:29 +00:00
David E. O'Brien
c05ac53b8b Remove __P() usage. 2002-03-21 22:49:10 +00:00
David E. O'Brien
8fb3f3f682 Remove 'register' keyword. 2002-03-21 18:49:23 +00:00
Mark Murray
724641c6f4 Add a long-overdue nail to the deprecated /dev/urandom interface
by asking some things that need unpredictable numbers to read
/dev/random instead.
2001-10-30 21:26:50 +00:00
Dima Dorfman
a7d81577d6 urandom(4) -> random(4) in comments.
PR:		27858
Submitted by:	Yoshihiro Koya <Yoshihiro.Koya@math.yokohama-cu.ac.jp>
Reviewed by:	md5(1)
Approved by:	markm
2001-06-07 02:32:18 +00:00
Andrey A. Chernov
848422bb7d srand*dev() fallback code: change ^getpid() to ^(getpid() << 16) to allow
change of high word part too to produce more interesting seed distribution.
2001-04-23 10:14:28 +00:00
Daniel Eischen
d201fe46e3 Remove _THREAD_SAFE and make libc thread-safe by default by
adding (weak definitions to) stubs for some of the pthread
functions.  If the threads library is linked in, the real
pthread functions will pulled in.

Use the following convention for system calls wrapped by the
threads library:
	__sys_foo - actual system call
	_foo - weak definition to __sys_foo
	foo - weak definition to __sys_foo

Change all libc uses of system calls wrapped by the threads
library from foo to _foo.  In order to define the prototypes
for _foo(), we introduce namespace.h and un-namespace.h
(suggested by bde).  All files that need to reference these
system calls, should include namespace.h before any standard
includes, then include un-namespace.h after the standard
includes and before any local includes.  <db.h> is an exception
and shouldn't be included in between namespace.h and
un-namespace.h  namespace.h will define foo to _foo, and
un-namespace.h will undefine foo.

Try to eliminate some of the recursive calls to MT-safe
functions in libc/stdio in preparation for adding a mutex
to FILE.  We have recursive mutexes, but would like to avoid
using them if possible.

Remove uneeded includes of <errno.h> from a few files.

Add $FreeBSD$ to a few files in order to pass commitprep.

Approved by:	-arch
2001-01-24 13:01:12 +00:00
Jason Evans
9233c4d942 Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),
just use _foo() <-- foo().  In the case of a libpthread that doesn't do
call conversion (such as linuxthreads and our upcoming libpthread), this
is adequate.  In the case of libc_r, we still need three names, which are
now _thread_sys_foo() <-- _foo() <-- foo().

Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(),
nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo().

Remove all internal libc usage of: creat(), pause(), sleep(), system(),
tcdrain(), wait(), and waitpid().

Make thread cancellation fully POSIX-compliant.

Suggested by:	deischen
2000-01-27 23:07:25 +00:00
Jason Evans
929273386f Add three-tier symbol naming in support of POSIX thread cancellation
points.  For library functions, the pattern is __sleep() <--
_libc_sleep() <-- sleep().  The arrows represent weak aliases.  For
system calls, the pattern is _read() <-- _libc_read() <-- read().
2000-01-12 09:23:48 +00:00
Peter Wemm
7f3dea244c $Id$ -> $FreeBSD$ 1999-08-28 00:22:10 +00:00
Andrey A. Chernov
f2305d469b srandomdev: use stack junk value in the fallback code too 1997-06-15 18:23:19 +00:00
Andrey A. Chernov
96c31b2618 Instead of copying fallback code over and over in each program,
implement (better) falback code inside srandomdev() itself.
Change return type from int to void (binary compatibility surprisely
achieved). Userland code will be changed soon.
1997-06-14 00:14:29 +00:00
Andrey A. Chernov
a080f5787d Remove orand* code as promised for the next release 1997-03-29 19:55:03 +00:00
Andrey A. Chernov
f409763500 Fix urandom reference in the comment 1997-03-23 23:09:31 +00:00
Andrey A. Chernov
301cf5d3e4 Add srandomdev() function (use "/dev/urandom" now)
Submitted by: wollman & me (add type casts and remove unneded loop)
1997-03-23 22:40:20 +00:00
Peter Wemm
4381233dc5 Merge Lite2 changes 1997-03-11 11:39:58 +00:00
Andrey A. Chernov
40f8b70da6 Improve seeding, the random sequence did not vary match
with the seed. Old variant will be available via libcompat soon.
1996-10-09 15:59:04 +00:00
Rodney W. Grimes
6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Bruce Evans
7e80dad5c6 u_int -> unsigned int, so that we don't have to include <sys/types.h>
or depend on <stdio.h> bogusly including it.
1994-09-05 13:26:40 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00