Commit graph

6303 commits

Author SHA1 Message Date
stanley lieber
c7eff88293 fortunes: Subject: [oss-security] nvi denial of service 2017-12-11 19:36:54 -05:00
stanley lieber
d057d67bed /sys/lib/rootstub 2017-12-11 19:34:15 -05:00
cinap_lenrek
35bc3ac573 devether: remove duplicated parseether() implementation (pull from libip) 2017-12-09 22:07:32 +01:00
cinap_lenrek
a7ac020664 libflate: force non-empty huffman table in mkzprecode() for deflate
busybox gunzip fails on empty (offset) huffman tables,
so force one entry.

gzip states in a comment:

The pkzip format requires that at least one distance code exists,
and that at least one bit should be sent even if there is only one
possible code.
2017-12-09 18:20:29 +01:00
cinap_lenrek
303fb49686 disk/edisk: allow printing and readonly inspection of hybrid MBR/GPT disks (thanks aiju)
dumping hybrid MBR/GPT disks is fine, which can sometimes be found
on USB sticks. but prohibit editing.

however, always barf on disks with dos partitions and missing
protecive MBR partition entry.
2017-12-05 23:44:43 +01:00
cinap_lenrek
a3c2819c50 realemu: fix precedence bug in argconv() format routine (thanks dan cross) 2017-12-04 05:14:31 +01:00
cinap_lenrek
e138750028 realemu: fix pit bcd mode 2017-12-04 05:09:13 +01:00
cinap_lenrek
d850c60121 plan9.ini(8): 9boot(8) is not a DOS program, remove outdated BUGS section 2017-12-03 19:23:55 +01:00
cinap_lenrek
65566dda8e devvga: properly handle physical screen size and panning
- remove arbitrary limits on screen size, just check with badrect()
- post resize when physgscreenr is changed (actualsize ctl command)
- preserve physgscreenr across softscreen flag toggle
- honor panning flag on resize
- fix nil dereference in panning ctl command when scr->gscreen == nil
- use clipr when drawing vga plan 9 console (vgascreenwin())
2017-12-03 18:54:25 +01:00
cinap_lenrek
a08727d9da screenlock: put position check back in grabmouse (thanks deuteron)
the check was there because changing te position causes another
mouse event to get posted resulting in grabmouse spinning.
2017-12-03 16:34:35 +01:00
cinap_lenrek
308407dc6e screenlock: have keyboard activity reset blank timeout 2017-12-03 06:41:41 +01:00
cinap_lenrek
61d4816102 screenlock: avoid continuous blanking, draw fullscreen over border 2017-12-03 06:27:18 +01:00
cinap_lenrek
e1c447bc11 screenlock: some improvements
check for "needkey " error string from auth_userpasswd() in case no
key is pesent in factotum. this used to be a common trap with stand
alone machines that do not have an authentication server setup.

indicate authentication in progress by drawing a white border.

delete unneccesary cruft and simplify the code.
2017-12-03 05:47:35 +01:00
cinap_lenrek
554fb43df5 libauth: replace proto=p9cr with new proto=dp9ik/p9sk1 role=login for auth_userpasswd() 2017-12-03 05:14:33 +01:00
cinap_lenrek
3ef51c16d4 auth/factotum: add role=login protocol variant to dp9ik/p9sk1
the role=login protocol is ment to replace proto=p9cr in
auth_userpasswd() from libauth to authenticate a user
given a username and a password. in contrast to p9cr, it
does not require an authentication server when user is the
hostowner and its key is present in factotum.
2017-12-03 05:10:04 +01:00
cinap_lenrek
e614cdf02f auth/login: add missing quotefmtinstall(), quote dom attribute 2017-12-03 04:54:34 +01:00
cinap_lenrek
f948c402d8 errstr(2): add /sys/src/libc/9sys/rerrstr.c to SOURCE section 2017-12-03 02:22:48 +01:00
cinap_lenrek
2bf642de9d screenlock: blank screen using /dev/mousectl (thanks sl) 2017-12-01 23:13:01 +01:00
cinap_lenrek
f03260bf25 libsec: make includes consistent for sha2block*.c 2017-11-30 21:50:52 +01:00
cinap_lenrek
4cdd7049a6 libsec: unroll portable sha1block function
just 6-10% slower than most assembly versions.
20% faster on zynq.
2017-11-30 21:30:03 +01:00
cinap_lenrek
c09cd2882c libsec: unroll portable sha2block functions
- unroll the loops
- rotate the taps on each step, avoiding copies
- simplify boolean formulas for Ch() and Maj()

this yields arround 40% throughput increase on 32/64bit
archs for sha2_256 and sha2_512 on amd64.
2017-11-30 02:16:27 +01:00
aiju
d51d54442e games/blit: update screen when display address changes (thanks aap) 2017-11-27 20:34:48 +00:00
aiju
bea6dcd122 vmx(1): fix openbsd 6.2 amd64 !entrystate bug 2017-11-27 09:30:15 +00:00
cinap_lenrek
aa3c0e55f3 libsec: optimize aesCBCencrypt()/aesCBCdecrypt()
- get rid of the temporary copies and memmoves()
- when the data pointer is aligned, do xor and copying inline

speedup for auth/aescbc encryption depends on arch:

- zynq	7%	(arm)
- t23	13%	(386)
- x230	20%	(amd64, aes-ni)
- apu2	25% (amd64, aes-ni)
2017-11-27 01:31:19 +01:00
cinap_lenrek
4898050282 cga: capture cga console contents on boot, make sure cgapos is in range
to capture bios and bootloader messages, convert the contents
on the screen to kmesg.

on machines without legacy cga, the cga registers read out as
0xFF, resuting in out of bounds cgapos. so set cgapos to 0 in
that case.
2017-11-26 17:11:01 +01:00
cinap_lenrek
af20ba6746 devvga: re-render text from kmesg after resize 2017-11-26 04:49:30 +01:00
cinap_lenrek
28e9566dc5 spin: Update to most recent version. (thanks Ori_B)
from Ori_B:

There were a small number of changes needed from the tarball
on spinroot.org:

  - The mkfile needed to be updated
  - Memory.h needed to not be included
  - It needed to invoke /bin/cpp instead of gcc -E
  - It depended on `yychar`, which our yacc doesn't
    provide.

I'm still figuring out how to use spin, but it seems to do
the right thing when testing a few of the examples:

	% cd $home/src/Spin/Examples/
	% spin -a peterson.pml
	% pcc pan.c -D_POSIX_SOURCE
	% ./6.out

	(Spin Version 6.4.7 -- 19 August 2017)
		+ Partial Order Reduction

	Full statespace search for:
		never claim         	- (none specified)
		assertion violations	+
		acceptance   cycles 	- (not selected)
		invalid end states	+

	State-vector 32 byte, depth reached 24, errors: 0
	40 states, stored
	27 states, matched
	67 transitions (= stored+matched)
		0 atomic steps
	hash conflicts:         0 (resolved)

	Stats on memory usage (in Megabytes):
	0.002	equivalent memory usage for states (stored*(State-vector + overhead))
	0.292	actual memory usage for states
	128.000	memory used for hash table (-w24)
	0.534	memory used for DFS stack (-m10000)
	128.730	total actual memory usage


	unreached in proctype user
		/tmp/Spin/Examples/peterson.pml:20, state 10, "-end-"
		(1 of 10 states)

	pan: elapsed time 1.25 seconds
	pan: rate        32 states/second
2017-11-22 21:09:31 +01:00
cinap_lenrek
077e719dfb libsec: write optimized _chachablock() function for amd64 / sse2
doing 4 quarterround's in parallel using 128-bit
vector registers. for second round shuffle the columns and
then shuffle back.

code is rather obvious. only trick here is for the first
quaterround PSHUFLW/PSHUFHW is used to swap the halfwords
for the <<<16 rotation.
2017-11-20 00:10:35 +01:00
cinap_lenrek
1eb3739454 libmach: fix format for 8db sse shift ops 2017-11-19 21:11:41 +01:00
cinap_lenrek
15bd341cc3 6l: fix typo in optab table for APSLLQ (0x7e -> 0x73) 2017-11-19 21:10:36 +01:00
cinap_lenrek
e3736b8887 kernel: make isaconfig() consistent, not inplace tokenizing the conf string 2017-11-19 17:17:04 +01:00
cinap_lenrek
89653dcc74 inst/mounthjfs: use /dev/swap instead of #c/swap to determine memory size (thanks aap) 2017-11-19 15:42:15 +01:00
cinap_lenrek
4a684fc627 6in4: add -m mtu option to specify outer MTU
instead of hardcoding the tunnel interface MTU to 1280,
we calculate the tunnel MTU from the outside MTU, which
can now be specified with the -m mtu option. The deault
outside MTU is 1500 - 8 (PPPoE).
2017-11-18 16:03:44 +01:00
cinap_lenrek
435a9a150e 9pc64: handle special case in fpurestore() for procexec()/procsetup()
when a process does an exec, it calls procsetup() which
unconditionally sets the sets the TS flag and fpstate=FPinit
and fpurestore() should not revert the fpstate.
2017-11-16 23:15:08 +01:00
cinap_lenrek
859d5c9146 audio/flacdec: add eof handler avoiding endless spinning on broken files (thanks deuteron) 2017-11-16 14:15:00 +01:00
cinap_lenrek
753f64a877 pc64: fix mistake fpurestore() mistake
cannot just reenable the fpu in FPactive case as we might have
been procsaved() an rescheduled on another cpu. what was i thinking...
thanks qu7uux for reproducing the problem.
2017-11-14 00:16:21 +01:00
cinap_lenrek
f4880742fd igfx: allocate backing memory for framebuffer and hw cursor when not done by bios (from qu7uux)
new approach to graphics memory management:

the kernel driver never really cared about the size of stolen memory
directly. that was only to figure out the maximum allocation
to place the hardware cursor image somewhere at the end of the
allocation done by bios.

qu7uux's gm965 bios however wont steal enougth memory for his
native resolution so we have todo it manually.

the userspace igfx driver will figure out how much the bios
allocated by looking at the gtt only. then extend the memory by
creating a "fixed" physical segment.

the kernel driver allocates the memory for the cursor image
from normal kernel memory, and just maps it into the gtt at the
end of the virtual kernel framebuffer aperture.

thanks to qu7uux for the patch.
2017-11-13 00:48:46 +01:00
cinap_lenrek
3356e0e731 libsec: AES-NI support for amd64
Add assembler versions for aes_encrypt/aes_decrypt and the key
setup using AES-NI instruction set. This makes aes_encrypt and
aes_decrypt into function pointers which get initialized by
the first call to setupAESstate().

Note that the expanded round key words are *NOT* stored in big
endian order as with the portable implementation. For that reason
the AESstate.ekey and AESstate.dkey fields have been changed to
void* forcing an error when someone is accessing the roundkey
words. One offender was aesXCBmac, which doesnt appear to be
used and the code looks horrible so it has been deleted.

The AES-NI implementation is for amd64 only as it requires the
kernel to save/restore the FPU state across syscalls and
pagefaults.
2017-11-12 23:15:15 +01:00
cinap_lenrek
4f27f6a04f pc64: allow using the FPU in syscall and pagefault handlers
The aim is to take advantage of SSE instructions such as AES-NI
in the kernel by lazily saving and restoring FPU state across
system calls and pagefaults. (everything can can do I/O)

This is accomplished by the functions fpusave() and fpurestore().

fpusave() remembers the current state and disables the FPU if it
was active by setting the TS flag. In case the FPU gets used,
the current state gets saved and a new PFPU.fpslot is allocated
by mathemu().

fpurestore() restores the previous FPU state, reenabling the FPU
if fpusave() disabled it.

In the most common case, when userspace is not using the FPU,
then fpusave()/fpurestore() just toggle the FPpush bit in
up->fpstate.

When the FPU was active, but we do not use the FPU, then nothing
needs to be saved or restored. We just switched the TS flag on
and off agaian.

Note, this is done for the amd64 kernel only.
2017-11-12 22:55:54 +01:00
cinap_lenrek
3ccd53549f pc64: set ts flag before schedinit() 2017-11-08 00:34:08 +01:00
cinap_lenrek
6eca75fafb merge 2017-11-04 20:11:20 +01:00
cinap_lenrek
24057fd4f4 kernel: introduce per process FPU struct (PFPU) for more flexible machine specific fpu handling
introducing the PFPU structue which allows the machine specific
code some flexibility on how to handle the FPU process state.

for example, in the pc and pc64 kernel, the FPsave structure is
arround 512 bytes. with avx512, it could grow up to 2K. instead
of embedding that into the Proc strucutre, it is more effective
to allocate it on first use of the fpu, as most processes do not
use simd or floating point in the first place. also, the FPsave
structure has special 16 byte alignment constraint, which further
favours dynamic allocation.

this gets rid of the memmoves in pc/pc64 kernels for the aligment.

there is also devproc, which is now checking if the fpsave area
is actually valid before reading it, avoiding debuggers to see
garbage data.

the Notsave structure is gone now, as it was not used on any
machine.
2017-11-04 20:08:22 +01:00
stanley lieber
7783616550 /lib/rsc: It only works when we're in the process of preparing a release. 2017-11-02 19:55:04 -04:00
cinap_lenrek
04ce485f1b tinc(8): mash -> mesh 2017-11-02 09:05:03 +01:00
cinap_lenrek
efdd6afcd6 tinc(8): more spelling spam 2017-11-01 18:40:17 +01:00
cinap_lenrek
ce89017481 tinc(8): spelling, thanks jpm 2017-11-01 18:34:58 +01:00
cinap_lenrek
736c31882f tinc(8): outout -> output 2017-10-31 22:58:55 +01:00
cinap_lenrek
daf292ac9d tinc: implement experimental mash peer to peer VPN from http://www.tinc-vpn.org/ 2017-10-31 22:44:25 +01:00
cinap_lenrek
5c1afc882c aes(2): document aes_xts_encrypt() and aes_xts_decrypt() functions 2017-10-30 03:04:05 +01:00
cinap_lenrek
0e68b7551a kernel: pc/pc, fix comment line 2017-10-30 02:08:05 +01:00