freebsd-nq/sys/libkern
Lawrence Stewart dbbf3e3f37 random(9): Restore historical [0,2^31-1] output range and related man
documention.

Commit SVN r364219 / Git 8a0edc914f changed random(9) to be a shim around
prng32(9) and inadvertently caused random(9) to begin returning numbers in the
range [0,2^32-1] instead of [0,2^31-1], where the latter has been the documented
range for decades.

The increased output range has been identified as the source of numerous bugs in
code written against the historical output range e.g. ipfw "prob" rules and
stats(3) are known to be affected, and a non-exhaustive audit of the tree
identified other random(9) consumers which are also likely affected.

As random(9) is deprecated and slated for eventual removal in 14.0, consumers
should gradually be audited and migrated to prng(9).

Submitted by:		Loic Prylli <lprylli@netflix.com>
Obtained from:		Netflix
Reviewed by:		cem, delphij, imp
MFC after:		1 day
MFC to:			stable/13, releng/13.0
Differential Revision:	https://reviews.freebsd.org/D29385
2021-03-24 16:14:58 +11:00
..
arm Remove obsolete code gated on _ARM_ARCH_* 2021-01-28 10:41:45 +00:00
arm64
x86
arc4random_uniform.c
arc4random.c
ashldi3.c
ashrdi3.c
asprintf.c
bcd.c
bcmp.c
bcopy.c
bsearch.c
cmpdi2.c
divdi3.c
explicit_bzero.c
ffs.c
ffsl.c
ffsll.c
fls.c
flsl.c
flsll.c
fnmatch.c
gsb_crc32.c tests/sys/kern/crc32: Check for SSE4.2 before using it 2021-02-02 09:53:39 +00:00
iconv_converter_if.m
iconv_ucs.c
iconv_xlat16.c
iconv_xlat.c
iconv.c
inet_aton.c
inet_ntoa.c
inet_ntop.c
inet_pton.c
jenkins_hash.c
lshrdi3.c
mcount.c
memcchr.c
memchr.c
memcmp.c
memmem.c
memset.c
moddi3.c
murmur3_32.c
qdivrem.c
qsort_r.c
qsort.c
quad.h
random.c random(9): Restore historical [0,2^31-1] output range and related man 2021-03-24 16:14:58 +11:00
scanc.c
strcasecmp.c
strcasestr.c
strcat.c
strchr.c
strchrnul.c
strcmp.c
strcpy.c
strcspn.c
strdup.c
strlcat.c
strlcpy.c
strlen.c Restore the augmented strlen commentary 2021-02-08 19:15:21 +00:00
strncat.c
strncmp.c
strncpy.c
strndup.c
strnlen.c
strrchr.c
strsep.c
strspn.c
strstr.c
strtol.c
strtoq.c
strtoul.c
strtouq.c
strvalid.c
timingsafe_bcmp.c
ucmpdi2.c
udivdi3.c
umoddi3.c