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2026-03-28util/nvmutil: tidy up hextonumLeah Rowe
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>
2026-03-28rand.c: fix initialisation bug in mrkbufLeah Rowe
should be null on bad return Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-27cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-27headerLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-27util/libreboot-utils: fix div by zero in rsizeLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-27util/libreboot-utils: finish implementing hellLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-27challengeLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26further cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26libreboot-utils: improved randomness testLeah Rowe
and the module bias handling is fully correct Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26mkhtemp rand: fix theoretical integer overflowLeah Rowe
extremely theoretical, with a T. T for theoretical. Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26rand/libreboot/utils: prevent div by zeroLeah Rowe
not really a thing. bufsiz would never be zero, unless the demon takes over linux Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26rand: fix modulo bias in rmallocLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26improve 3Leah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26improve 2Leah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26improveLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26phrasingLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26nvmutil: remove errno handle in hextonumLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26REAL_POS_IO enable by default in nvmutilLeah Rowe
(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>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26nvmutil: fix lseek call when read pos i/o enabledLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26mkhtemp readmeLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26more cleanup on rand.cLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26fix makefileLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26libreboot-utils: tidy up rand.cLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26libreboot-utils: new function, scatn()Leah Rowe
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>
2026-03-26rmallocLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26util/libreboot-utils: randomisation testLeah Rowe
to test the effectiveness of the rand function Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26mkrstrLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils: new function, mkrbuf (random malloc)Leah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils: close fd on rset failureLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26further clarify intenttLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils, rset: err if zero bytes requestedLeah Rowe
similar to the logic about other failure states Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26dotLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils: also check null!Leah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils: clarify design regarding urandom/getrandomLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils, rand: err on zero return (fatal)Leah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26lbutils: cast to prevent ub in rset()Leah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26fix offset on urandom falbackLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26libreboot-utils: tidy up randLeah Rowe
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>
2026-03-26cleanupLeah Rowe
Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26libreboot-utils: replace rlong() with rset()Leah Rowe
now you can send an arbitrary number of bytes with random numbers Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26libreboot-utils: tidy up randLeah Rowe
also re-add /dev/urandom support, as a config option Signed-off-by: Leah Rowe <leah@libreboot.org>
2026-03-26util/mkhtemp: use /dev/urandom *if enabled*Leah Rowe
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>