ape: check *alen before copying in getpeername(), getsockname() and accept()
*alen has to be initialized to the size of the buffer
by the caller, and we are supposed to put the real
size of the address in there, but not copy more than
the original *alen value (truncate).
ppatience0 [Sun, 31 Mar 2013 02:50:48 +0000 (22:50 -0400)]
ether82563: add untested devices from OpenBSD's em(4) Intel driver. also update some names according to OpenBSD's driver (previously added device, 0x10c0, is also from OpenBSD's driver).
cinap_lenrek [Sat, 23 Mar 2013 21:09:46 +0000 (22:09 +0100)]
wpa: fix rsc for wpa2
in wpa2, the rsc field of the eapol message3 is the packet number for
*group* messages that the ap will use as there is no separate group
key message. in wpa1, we use it for the peerwise key.
cinap_lenrek [Sat, 16 Mar 2013 01:37:07 +0000 (02:37 +0100)]
sysexec: fix possible segment overlap with temporary stack
the kernel uses fixed area (TSTKTOP, TSTKSIZ) of the address
space to temporarily map the new stack segment for exec. for
386 and arm, this area was right below the stack segment which
has the problem that the program can map arbitrary segments
there (even readonly).
alpha and ppc dont have this problem as they map the temporary
exec stack *above* the user reachable stack segement and segattach
prevents one from mapping anything above or overlaping the stack.
lots of arch code assumes USTKTOP being the end of userspace
address space and changing this to TSTKTOP would work, but results
in lots of hard to test changes.
instead, we'r going to map the temporary stack programmatically
finding a hole in the address space where to map it. we also lift
the size limitation for arguments and allow arguments to fill
the whole new stack segement.
the TSTKTOP and TSTKSIZ are not used anymore so they where removed.
cinap_lenrek [Mon, 11 Mar 2013 17:57:22 +0000 (18:57 +0100)]
ape: threadsafe errno
store errno on the private process stack so its always per process
and not just per memory space. errno itself becomes a macro
dereferencing int *_errnoloc; which is initialized from main9.s
pointing to the private stack location.
various fixes in programs that just imported errno variable with
"extern int errno;" instead of including <errno.h>.
cinap_lenrek [Mon, 11 Mar 2013 00:16:34 +0000 (01:16 +0100)]
ape: fix thread race with close() and select()
in ape close(), do the real filedescriptor _CLOSE() *after* we cleared
the _fdinfo[] slot because once closed, we dont own the slot anymore and
another process doing open() can trash the slot. make sure open() retuns
fd < OPEN_MAX.
double check in _startbuf() holding mux->lock if the fd is already buffered
preveting running double copyprocs on a fd.
dont zero the mux->rwant/ewant bitmaps at the end of select() as we do not
hold the mix->lock.
in _closebuf() kill copyproc while holding the mux->lock to make sure the
copyproc isnt holding it at the time it is killed. run kill() multiple times
to make sure the proc is gone.
cinap_lenrek [Sun, 10 Mar 2013 23:48:35 +0000 (00:48 +0100)]
ape/stdio: make fopen() quasi threadsafe for python
python uses processes sharing memory. it requires at least fopen() to
be called by multiple threads at once so we introduce _IO_newfile()
which allocates the FILE structure slot under a lock.
cinap_lenrek [Sun, 10 Mar 2013 03:06:42 +0000 (04:06 +0100)]
nusb/disk: add small delay after unit start command (for thinkpad sdcard reader)
diskparts fails on thinkpad x200 sdcard reader if we dont
give the unit some time to startup. the device took about
100ms to become ready so status poll loop with a long
timeout would be overkill.
1. Go group spotted that a slightly-obscured pointer move was done by AMOVL not AMOVQ.
2. Inspecting the code further, I noticed that other pointer types were set to TLONG not TIND,
causing similar truncation of pointers to 32 bits.
cinap_lenrek [Thu, 28 Feb 2013 18:21:03 +0000 (19:21 +0100)]
ape: add PASS_MAX constant for getpass() to limits.h (from patch/ape-pass_max)
add PASS_MAX to limits.h for ape, and make getpass respect it. also increase the size of
the maximum passwords (we use long ones at work). Needed for native port of SVN (in progress).
cinap_lenrek [Thu, 21 Feb 2013 15:10:28 +0000 (16:10 +0100)]
netif: fix stat() on "stats" and "ifstats" files in network interface
the kernel would go into endless loop when stating "stats" and "ifstats"
files and the network interface having no connections, or otherwise return
wrong stat info.
cinap_lenrek [Sat, 16 Feb 2013 22:38:58 +0000 (23:38 +0100)]
boot(8): manpage correction $objtype vs. $cputype (from /n/sources/patch/boot-cputype-objtype)
boot(8) claims that boot will launch /$objtype/init;
that is incorrect. It launches /$cputype/init (so says
both boot.c and cpurc(8)). That's the more sensible
choice. This patch fixes the man page to resolve the
mismatch.