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1241 Commits

Author SHA1 Message Date
Leah Rowe f4f1670909 util/nvmutil: tidy up hextonum 
i had a bunch of hacks in here because i was
previously using very buggy rand. now it's ok.

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-28 03:08:52 +00:00
Leah Rowe 998528c404 rand.c: fix initialisation bug in mrkbuf 
should be null on bad return

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-28 02:27:00 +00:00
Leah Rowe 29296fc513 cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-27 22:58:12 +00:00
Leah Rowe 1e23ee26b1 header 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-27 21:41:12 +00:00
Leah Rowe 0cc4ff7b3b util/libreboot-utils: fix div by zero in rsize 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-27 17:14:10 +00:00
Leah Rowe db6e817ded util/libreboot-utils: finish implementing hell 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-27 16:56:40 +00:00
Leah Rowe 5d6344292a challenge 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-27 02:28:27 +00:00
Leah Rowe a29a3ac6f6 cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 23:02:00 +00:00
Leah Rowe 1a09efbbbe cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 19:44:23 +00:00
Leah Rowe d1ba9bae03 further cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 13:09:43 +00:00
Leah Rowe 10ecf32e33 libreboot-utils: improved randomness test 
and the module bias handling is fully correct

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 10:52:11 +00:00
Leah Rowe 8e8f7bced4 mkhtemp rand: fix theoretical integer overflow 
extremely theoretical, with a T. T for theoretical.

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 09:04:30 +00:00
Leah Rowe d6087901c1 rand/libreboot/utils: prevent div by zero 
not really a thing. bufsiz would never be zero,
unless the demon takes over linux

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 08:59:03 +00:00
Leah Rowe cf16d07df9 rand: fix modulo bias in rmalloc 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 08:56:15 +00:00
Leah Rowe dbc99be9a0 cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 07:04:23 +00:00
Leah Rowe b211706559 improve 3 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 4d4285e63c improve 2 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe fe259bd042 improve 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 1900e18dae phrasing 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe f7bd4b9472 nvmutil: remove errno handle in hextonum 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 5e049df024 REAL_POS_IO enable by default in nvmutil 
(for real pwrite/pread. don't use the compatibility
one - it works perfectly, but using it is pointless
and may have unknown bugs, even though i know it's
probably perfect)

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 5ea7fe22b2 cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe c2c24b7a24 nvmutil: fix lseek call when read pos i/o enabled 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 3d3193bb80 mkhtemp readme 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 8522b5c391 more cleanup on rand.c 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe e151179d14 cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe c4ff47a8ed fix makefile 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe f4f3fe3e0a libreboot-utils: tidy up rand.c 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 58ce1d74c0 libreboot-utils: new function, scatn() 
concatenate an arbitrary number of strings,
pointed to by char **

i'll use this and the next function, dcatn,
in an upcoming feature planned for mkhtemp.

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe b84c929e64 rmalloc 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe e0319f0116 util/libreboot-utils: randomisation test 
to test the effectiveness of the rand function

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe dc7a02da2d cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe c66f381e90 mkrstr 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 1e79219bea lbutils: new function, mkrbuf (random malloc) 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe ee4f765719 lbutils: close fd on rset failure 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe e8c4bccd86 further clarify intentt 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 4034b211ce lbutils, rset: err if zero bytes requested 
similar to the logic about other failure states

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe b26837c4dc dot 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe e44ea5d794 lbutils: also check null! 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 7b3c8cf7ec lbutils: clarify design regarding urandom/getrandom 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 34f26319d7 lbutils, rand: err on zero return (fatal) 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe bce1099509 cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 0626bf48f4 lbutils: cast to prevent ub in rset() 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 50e3b1f45d cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 0d86fd38df fix offset on urandom falback 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe a6f76ac4ee libreboot-utils: tidy up rand 
make it more efficient. much lower rejection
rate now, about 2-5%. deal with bias, but also
get numbers in bulk. not too many.

i'd say this is about right in terms of performance
balance. 64 bytes == 8 large integers.

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe cbe48caf1b cleanup 
Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe a70ede850d libreboot-utils: replace rlong() with rset() 
now you can send an arbitrary number of bytes
with random numbers

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 00b56c0278 libreboot-utils: tidy up rand 
also re-add /dev/urandom support, as a config option

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00
Leah Rowe 6c8cf9a9e0 util/mkhtemp: use /dev/urandom *if enabled* 
build-time option. do not allow fallback; on
a system where getrandom is used, it should
be used exclusively.

on some systems, getrandom may not be available,
even if they have a newer kernel.

Signed-off-by: Leah Rowe <leah@libreboot.org>
 2026-03-26 06:59:42 +00:00