CVS commit: src

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Tue Aug 27 13:43:02 UTC 2024

Modified Files:
        src/distrib/sets/lists/debug: mi
        src/distrib/sets/lists/tests: mi
        src/lib/libc/gen: arc4random.c
        src/lib/libc/include: reentrant.h
        src/tests/lib/libc/gen: Makefile
Added Files:
        src/lib/libc/include: arc4random.h
        src/tests/lib/libc/gen: t_arc4random.c

Log Message:
arc4random(3): Add automatic tests.

This verifies that:
- arc4random zeroes its state and reseeds itself on fork
- arc4random reseeds itself on entropy consolidation (e.g., VM clone)
- arc4random falls back to global state if it can't allocate local
  state because address space limits cause mmap to fail

NOTE: This adds a new libc symbol __arc4random_global, but it's in
the reserved namespace and only used by t_arc4random, so no libc
minor bump.

PR kern/58632: getentropy(2) and arc4random(3) do not reseed on VM
fork


To generate a diff of this commit:
cvs rdiff -u -r1.445 -r1.446 src/distrib/sets/lists/debug/mi
cvs rdiff -u -r1.1333 -r1.1334 src/distrib/sets/lists/tests/mi
cvs rdiff -u -r1.36 -r1.37 src/lib/libc/gen/arc4random.c
cvs rdiff -u -r0 -r1.1 src/lib/libc/include/arc4random.h
cvs rdiff -u -r1.21 -r1.22 src/lib/libc/include/reentrant.h
cvs rdiff -u -r1.55 -r1.56 src/tests/lib/libc/gen/Makefile
cvs rdiff -u -r0 -r1.1 src/tests/lib/libc/gen/t_arc4random.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.