Make sure you don't have a file descriptor leak for the 'real'
underlying CAM device. This needs to be checked not only in
the open routine, but the device->fd has to be initialized
as well.
PR: 28688
Submitted (partially) by: T. William Wells <bill@twwells.com>
MFC after: 2 weeks
brian [Wed, 4 Jul 2001 03:34:20 +0000 (03:34 +0000)]
Handle any of descriptors 0, 1 or 2 being closed when we're
envoked -- don't use them (as return values from open()), then
(say) close(STDIN_FILENO) when daemonising.
This is done by grabbing 3 descriptors to /dev/null at startup and
releasing them after we've daemonised.
Implement mwakeup, mwakeup_one, cv_signal_drop and cv_broadcast_drop.
These take an additional mutex argument, which is dropped before any
processes are made runnable. This can avoid contention on the mutex
if the processes would immediately acquire it, and is done in such a
way that wakeups will not be lost.
brian [Tue, 3 Jul 2001 22:20:19 +0000 (22:20 +0000)]
Reduce the interface MTU by 2 when MPPE has been successfully negotiated.
This is necessary because MPPE will combine the protocol id with the
payload received on the tun interface, encrypt it, then prepend its
own protocol id, effectively increasing the payload by two bytes.
Make the code to read the kernel message buffer via sysctl machine-
independent and rename the corresponding sysctls from machdep.msgbuf and
machdep.msgbuf_clear (i386 only) to kern.msgbuf and kern.msgbuf_clear.
First, fix a leftover of the cut'n'paste from the kld* pages:
change the name of the page (.Nm) from "kldstat" to "modstat".
Second, don't claim that modstat(2) always returns 0. Actually,
it behaves as most syscalls do - returns 0 on success, or -1
on failure.
New release notes: network device cloning, ich sound driver.
# I have deliberately not mentioned the kernel compile directory move;
# people using buildworld aren't affected, and those that aren't had
# better be reading cvs-all and/or src/UPDATING.
Just check p_oncpu when determining if a process is executing or not.
We already did this in the SMP case, and it is now maintained in the UP
case as well, and makes the code slightly more readable. Note that
curproc is always executing, thus the p != curproc test does not need to
be performed if the p_oncpu check is made.
Fix a XXX comment by moving the initialization of the number of pbuf's
for the vnode pager to a new vnode pager init method instead of making it
a hack in getpages().
Remove bogus need_resched() of the current CPU in roundrobin().
We don't actually need to force a context switch of the current process.
The act of firing the event triggers a context switch to softclock() and
then switching back out again which is equivalent to a preemption, thus
no further work is needed on the local CPU.
Correct handling of continuation lines. Instead of treating the
backslash as nothing, treat it like a space so that adjacent lines
aren't glued together.
PR: 8479
Submitted by: Adrian Filipi-Martin <adrian@ubergeeks.com>
Use the printstatus() function from ${.CURDIR}/../fdread/fdutil.c to
give a bit more information about up to 10 errors encountered during
formatting (unless -q has been specified, of course).
While being here, removed a bitrotten comment in the Makefile, and
kill the old Emacs local variable stuff at the end of fdformat.c
that's no longer useful anway.
lars [Mon, 2 Jul 2001 16:39:17 +0000 (16:39 +0000)]
Reviewed by: Matthew Jacob
Changed the timeout to wait for writing of filemarks to complete from 1
minute to 3 minutes. This should probably be enhanced to be a sysctl variable.
Introduce DEVICE_INIT, DEVICE_GET, and DEVICE_SHUTDOWN macros. As the
names suggest, they perform methods on Device's. In addition, they
check that the pointer passed to them is valid; if it isn't, they
pretend that the action failed. This fixes some crashes due to NULL
dereferences (e.g., PR 26509).
Frist, for pci slots, make the setup intr save the requested interrupt
vector and arg and return rather than passing it up to our parent. On
interrupts, we call this vector iff there's a card in the slot. This
should eliminate some of the hangs or "weird" messages that people see
when ejecting cards and also help close the race window somewhat.
Reading the pci bus one more time for this information is judged to be
an acceptible tradeoff since it is very very fast.
Cleanup a little how we detect unsupported cards. Only detect
unsupported cards (eg cardbus cards) on card insertion (or more
pedantically when a card is actually present). This should allow us
to change the message in the future to "cardbus card not supported
with OLDCARD" :-).
Note:
We may also consider this for the ISA bus case, but there the
reads are much more expensive and the location of the CD pin
status lines appears to be less standardized. Also, the ISA
management interrupt isn't shared with the card's interrupt.
The mutliplex the CSC and function interrupts bit also appears
to be non-standard (or at least not imlemented on all
bridges).
Write zeros into the base/bounds register bars. We need to do this
because NEWBUS (and I think some versions of Windows sometimes) writes
0xffffffff to these registers to disable them. When they are
"disabled" like this, writing memory ranges to the pcic registers are
ignored and you will get "card (null) (null)" when you insert a call
otherwise.
First cut at getting the pcic controller and power information for
each of the bridge chips. Before we wrongly assumes that all cardbus
bridge chips were intel compatible step A/B. This mostly worked, but
likely caused problems with certain cirrus logic cardbus bridges.
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