pcb for fork(). It was possible for the state to be saved twice when an
interrupt handler saved it concurrently. This corrupted (reset) the state
because fnsave has the (in)convenient side effect of doing an implicit
fninit. Mundane null pointer bugs were not possible, because we save to
an "arbitrary" process's pcb and not to the "right" place (npxproc).
Push the parent's %gs to the pcb for fork(). Changes to %gs before
fork() were not preserved in the child unless an accidental context
switch did the pushing. Updated the list of pcb contents which is
supposed to inhibit bugs like this. pcb_dr*, pcb_gs and pcb_ext were
missing. Copying is correct for pcb_dr*, and pcb_ext is already
handled specially (although XXX'ly).
Reducing the savectx() call to an npxsave() call in rev.1.80 was a
mistake. The above bugs are duplicated in many places, including in
savectx() itself.
The arbitraryness of the parent process pointer for the fork()
subroutines, the pcb pointer for savectx(), and the save87 pointer
for npxsave(), is illusory. These functions don't work "right" unless
the pointers are precisely curproc, curpcb, and the address of npxproc's
save87 area, respectively, although the special context in which they
are called allows savectx(&dumppcb) to sort of work and npxsave(&dummy)
to work. cpu_fork() just doesn't work unless the parent process
pointer is curproc, or the caller has pushed %gs to the pcb, or %gs
happens to already be in the pcb.
when PC98 is defined. This is in perparation for a mecia driver
separate from pcic, assuming that all goes well with that effort.
MECIA_SUPPORT won't be removed until after that support is working.
of the pcic class of devices. Go ahead and move it to the "usual"
place. I say "usual" in quotes since it isn't exactly right (not in
dev/blah), but it is closer than before.
softc.
o Store pointers to softc in dev_t in si_drv1.
o Change 'kludge version' to 'classic version' since things are getting less
kludgy.
o Minor code shuffling so that we probe and attach the pccard slots.
o Minor style(9) changes.
function; we now handle unknown protocols more gracefully.
- Cache the return from getnetconfigent() so that we don't have to
remember to call freenetconfigent() each time. This fixes a memory
leak that would cause retrying background mount_nfs processes to
slowly increase their memory usage.
follow Linux' convention and use %gs. This adds back the setting of
%fs to a sane value in sendsig(). The value of %gs remains preserved
to whatever it was in user context.
terminates the string in all cases, based on code from netstat(1).
The path in a sockaddr_un is terminated either by a '\0', or by
the end of the sockaddr as defined by sun_len.
Previously, the code could write the "safety" '\0' beyond the end
of the sockaddr (sockaddr_un's need only be large enough to store
sun_len bytes), and writing into the the supplied sockaddr is bad
anyway.
them.
Sysinstall used to check /var/run/ld.so.hints (aout related) and create
hints with the ldconfig command, but the ldconfig command alone will
generate elf hints only. The correct behavior is:
* If /var/run/ld-elf.so.hints does not exist, generate elf hints
* If /var/run/ld.so.hints does not exist, generate aout hints
(using ldconfig with the -aout option)
This will help ports that check for aout libraries using ldconfig in their
pkg-req scripts.
Approved by: jkh
MFC after: 1 weeks
- the changes that renamed libf2c to libg2c had not reached here
- there were no definitions for LIBDEVINFO, LIBMENU, LIBPANEL, LIBTINFO,
LIBUSB or LIBVGL. LIBUSB was used without it being defined, and
LIBDEVINFO and LIBVGL should have been used.
- the definitions of LIBDESCRYPT, LIBGCC_PIC, LIBGPLUSPLUS, LIBKZHEAD,
LIBKZTAIL, LIBSCRYPT and LIBSCSI were garbage.
Fixed some old bugs:
- LIBC_PIC and LIBCOM_ERR were assigned to using "=" instead of "?=".
- the definition of LIBC_R was disordered.
- LIBFORM was misspelled LIBFORMS (but not actually used).
warnx()+exit() with errx() and replace a big if..then..else construct
to determine the package download directory with a lookup table.
Reviewed by: jkh
MFC after: 2 weeks
/usr/share/syscons/keymaps. This should prevent word breakage when new keymaps
have been added.
Prompted by: Matthew D. Fuller <fullermd@over-yonder.net>
handler in Linux emulation. According to bde, this is what Linux
does.
Recent versions of linuxthreads use %gs for thread-specific data,
while FreeBSD uses %fs (mostly because WINE uses %gs).
Tested by: drew
TLU event handler).
This used to be done as a side effect of SIOCAIFADDR'ing the interface,
but now that duplicate SIOCAIFADDRs are optimised out, we can't depend
on that behaviour.
KASSERT when vp->v_usecount is zero or negative. In this case, the
"v*: negative ref cnt" panic that follows is much more appropriate.
Reviewed by: mckusick
fail due to witness exhausting its internal resources and shutting down.
Reported by: Szilveszter Adam <sziszi@petra.hos.u-szeged.hu>
Tested by: David Wolfskill <david@catwhisker.org>
much more often that expected and negatively impact performance when
running at 100mbps. I need to figure out if there's a better way to
handle this, but for now this shouldn't hurt anything.
and DP83821 gigabit ethernet MAC chips and the NatSemi DP83861 10/100/1000
copper PHY. There are a whole bunch of very low cost cards available with
this chipset selling for $150USD or less. This includes the SMC9462TX,
D-Link DGE-500T, Asante GigaNIX 1000TA and 1000TPC, and a couple cards
from Addtron.
This chip supports TCP/IP checksum offload, VLAN tagging/insertion.
2048-bit multicast filter, jumbograms and has 8K TX and 32K RX FIFOs.
I have not done serious performance testing with this driver. I know
it works, and I want it under CVS control so I can keep tabs on it.
Note that there's no serious mutex stuff in here yet either: I need
to talk more with jhb to figure out the right way to do this. That
said, I don't think there will be any problems.
This driver should also work on the alpha. It's not turned on in
GENERIC.
