Commit graph

17 commits

Author SHA1 Message Date
cinap_lenrek c039b52fc3 libc: constant time implementation for encode(2) routines, fix base32
the string encoding functions touch secret key material
in a bunch of places (devtls, devcap), so make sure we do
not leak information by cache timing side channels, making
the encoding and decoding routines constant time.

we also expose the alphabets through encXchr()/decXchr()
functions so caller can find the end of a encoded string
before calling decode function (for libmp).

the base32 encoding was broken in several ways. inputs
lengths of len%5 == [2,3,4] had output truncated and
it was using non-standard alphabet. documenting the alphabet
change in the manpage.
2017-12-31 09:06:42 +01:00
cinap_lenrek 3794b1c14f libc: improve alignment of QLp structure on amd64, cosmetics
the QLp structure used to occupy 24 bytes on amd64.
with some rearranging the fields we can get it to 16 bytes,
saving 8K in the data section for the 1024 preallocated
structs in the ql arena.

the rest of the changes are of cosmetic nature:

- getqlp() zeros the next pointer, so there is no need to set
  it when queueing the entry.

- always explicitely compare pointers to nil.

- delete unused code from ape's qlock.c
2017-10-28 18:53:27 +02:00
cinap_lenrek 3e38194d72 introduce signed intptr and %z format modifier for formating uintptr and intptr 2016-01-07 04:39:09 +01:00
cinap_lenrek 7562da90e5 libc: remove privfree(), simplify privalloc() 2015-09-06 20:43:05 +02:00
cinap_lenrek b99ecee6cd malloc: change malloc and realloc tag types to uintptr 2014-01-20 00:09:53 +01:00
cinap_lenrek a5e9641906 change Rune from ushort to uint for to 21 bit runes (thanks mischief!)
big big change. requires rebuilding 8c first and then rebuild
everything.
2013-10-17 12:02:45 +02:00
cinap_lenrek cdc2c30e99 reverting semaphore lock changes from sources (r41ccd6d221da, rb28756e5ba29)
semaphore locks have much higher overhead than initially presented
in the "Semaphores in Plan9" paper. until the reason for it has been
found out i will revert the changes.
2013-09-26 22:24:31 +02:00
cinap_lenrek 3d05e77ca1 libc: change tas/sleep locks to cas/semacquire/semrelease locks (from sources)
spinlocks have been changed to use the new semacquire/semrelease
syscalls in combination with atomic compare and swap operations.
2013-09-21 19:53:27 +02:00
cinap_lenrek 667010554b make all the commands agnostic about Rune width. (from sources) 2013-04-24 20:13:18 +02:00
cinap_lenrek 6cadd03bbe fix utf and rune handling in preparation for 32bit runes 2012-12-31 21:09:46 +01:00
cinap_lenrek 7f22b32e63 isodate in libc? revert every commit for great justice! 2012-09-01 14:12:29 +02:00
google 0e41e0b7c5 Add prototypes for isotime and isodate. This should have been in the previous commit. 2012-09-02 23:15:15 +12:00
cinap_lenrek 18d1ef20b3 format check for octal fmt strings (import from sources) 2012-08-02 22:22:57 +02:00
cinap_lenrek 49ac0b93d3 add tsemacquire syscall for go 2012-07-29 20:26:49 +02:00
aiju b4ae96bcb9 added ainc / adec prototype 2011-06-25 12:26:25 +02:00
Taru Karttunen a9060cc06b Import sources from 2011-03-30 iso image - lib 2011-03-30 19:35:09 +03:00
Taru Karttunen c558a99e0b Import sources from 2011-03-30 iso image - sys/include 2011-03-30 16:47:56 +03:00