Change the list interface to simplify things.
Remove old list ioctls which bogusly exported the softc to userland.
Move the softc and associated structures from the public header to
the source file.
Make CCD a GEOM class.
For now only use this for implementing a OAM config method which
can return a list of configured CCD devices in the format which
"ccdconfig -g[v]" would normally output.
mpo_copy_mbuf_label() entry point for Biba and MLS, respectively.
Otherwise, labels in m_tags may not be properly propagated across
some classes of mbuf operations. This problem caused these policies
to fail-stop the system with a panic.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
Two tokens that don't together form a vaid preprocssor token cannot be
pasted together using ANSI-C token concatinatation. GCC 3.2's cpp, at least,
produces the desired result w/o using "##".
Clarify that the implicit fallthrough was *not* intentional (thanks, Poul!)
and reorganize the code so a correct fallthrough (with /* FALLTHROUGH */)
occurs.
o Use pcb and tf for the new pcb and the new trapframe and use pcb0
for the old (current) pcb. The mix of pcb, pcb2 and tf was slightly
confusing.
o Don't define td->td_frame here. It has already been set previously
by cpu_thread_setup. Add a KASSERT to make sure pcb and tf are both
non-NULL.
o Make sure the number of dirty registers is 0 for the new thread.
There are no user registers on the backing store because we heven't
enter userland yet.
is not called, and no static rules match an outgoing packet, the
latter retains its source IP address. This is in support of the
"static NAT only" mode.
bzero(ptr, sizeof(DC_RXLEN * 5));
which should obviously be:
bzero(ptr, DC_RXLEN * 5);
Looks like this bug may have reduced the effectiveness of the
workaround for the hardware bug in the PNIC chips.
MFC after: 1 week
o Remove register keyword
o ANSIfy prototypes
o Remove "return;" at the end of void functions
o Remove trailing spaces
o Don't align local variables with tabs and reorder them
o Don't use /* FOO */ at the end of a #ifdef FOO block if
it's a small block
- Other non-functional changes :
o 6 -> ETHER_ADDR_LEN
o Don't initialize if_output; ether_ifattach() does it for us
hinge on the "verb" parameter which the class gets to interpret as
it sees fit.
Move the entire request into the kernel and move changed parameters
back when done.
Sleep on the vnode interlock while waiting for another
caller to increment fi_readers or fi_writers. Hold the
vnode interlock while incrementing fi_readers or fi_writers
to prevent a wakeup from being missed.
Only access fi_readers and fi_writers while holding the vnode
lock. Previously fifo_close() decremented their values without
holding a lock.
Move resource deallocation from fifo_close() to fifo_inactive(),
which allows the VOP_CLOSE() call in the error return path in
fifo_open() to be removed. Fifo_open() was calling VOP_CLOSE()
with the vnode lock held, in violation the current vnode locking
API. Also the way fifo_close() used vrefcnt() to decide whether
to deallocate resources was bogus according to comments in the
vrefcnt() implementation.
Reviewed by: bde
the lameness of the kstack code. The EPC overhaul de-lame-ified the
kstack code by removing the need for contigmalloc(). We can now
allocate stacks using malloc(). We probably want to make the stacks
swappable as well so that we can make it MI. But that's another story.
-Werror build with such option, but not other combinations. LINT
misses this because syscons knobs in LINT turn off a lot of code.
Reviewed by: marcel (some time ago)
if we permit them to occur, the kernel panics due to our performing
EA operations using VOP_STRATEGY on the vnode. This went unnoticed
previously because there are very for users of device nodes on UFS2
due to the introduction of devfs. However, this can come up with
the Linux compat directories and its hard-coded dev nodes (which will
need to go away as we move away from hard-coded device numbers).
This can come up if you use EA-intensive features such as ACLs and
MAC.
The proper fix is pretty complicated, but this band-aid would be
an excellent MFC candidate for the release.
why certain exceptions are made, note an inconsistency between
FreeBSD and some other implementations regarding IPC_M, and let
suser() generate our EPERM rather than forcing it ourselves.
Remove a carriage return that crept in in the last commit.
Reviewed by: gordon
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
gateway page is considered kernel space, we can panic when we should
only SIGSEGV. Hence, add the additional constraint that for page
faults we also require running with kernel privileges. The gateway
page is the only kernel code running with user privileges, iso this
is a correct way to exclude the gateway page from kernel land.
We do not currently exclude the gateway page for other faults as it
is not always the right way to do it. Further tuning will happen on
a case by case bases.
thr_create(2). This implementation is so far only compile tested.
But since this is also the last of the functions required to
support libthr, we're now functionally complete (for some weird
definition of functionally; and complete). Runtime testing can
commence.
sigreturn(), we cheat and assume the preserved registers are still
on-chip and unmodified. This is actually the case, but more by accident
than by design. We need to use unwinding eventually or explicitly
compile the kernel in a way that the compiler steers clear from using
the preserved registers completely.
o The SDM states that flushing the RSE in the cycle prior to the
call to ia32 code yields the best performance. We don't really
care to much about performance here, but we do the same anyway.
I'm being paranoia and conservative here.
o Only initialize the ia32 state registers, not the registers used
as scratch by the ia32 engine. This saves a couple of loads from
the trapframe, but also helps debugging: we don't clobber useful
debugging data (engineering hints :-)
o Make sure all general registers constituting ia32 state have been
initialized. If there's no useful to be loaded from the trapframe,
clear the register. This avoids accidentally leaking NaT bits.
o Make sure we set ar.k6 prior to clobbering ar.bspstore and also
set ar.k7 prior to setting sp. This fixes a race seen for ia64
native code as well (and previously fixed too).
backing store before we discard them. It is possible that we
enter the kernel (due to an execve in this case) with a lot of
dirty user registers and that the RSE has only partially spilled
them (to make room for new frames). We cannot move the backing
store pointer down (to discard user registers) when not all of
the user registers are on the backing store.
So, we flush the register stack IFF this happens. Unconditionally
doing the flush is too costly, because the condition in which we
need to flush is very rare.
This change appears to fix the SIGSEGV that sometimes happen for
newly executed processes and so far also appears to fix the last
of the corruption. It is possible, although not likely, that this
change prevents some other bug from happening, even though it is
itself not a fix. Hence the uncertainty. We'll know in a couple
of months I guess :-)
the stack to be changed in a way incompatible with elf32_map_insert()
where we used data_buf without initializing it for when the partial
mapping resulting in a misaligned image (typical when the page size
implied by the image is not the same as the page size in use by the
kernel). Since data_buf is passed by reference to vm_map_find(), the
compiler cannot warn about it.
While here, move all local variables to the top of the function.
of C strings internally; C strings require a lot of return value
checking that (a) takes a lot of space, and (b) is difficult to get
right. Prior to the advent of compartment support, modeling APIs
for helper functions on snprintf worked fine; with the additional
complexity, the sbuf_printf() API makes a lot more sense.
While doing this, break out the printing of sequential compartment
lists into a helper function, mac_{biba,mls}_compartment_to_string().
This permits the main body of mac_{biba,mls}_element_to_string()
to be concerned only with identifying sequential ranges rather
than rendering.
At a less disruptive moment, we'll push the move from snprintf()-like
interface to sbuf()-like interface up into the MAC Framework layer.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
Use ->init() and ->fini() to handle the mutex in geom_disk.c
Remove the g_add_class() function and replace it with a standardized
g_modevent() function.
This adds the basic infrastructure for loading/unloading GEOM classes
only meaningful for fragments. Also don't bother to byte-swap the
ip_id when we do generate it; it is only used at the receiver as a
nonce. I tried several different permutations of this code with no
measurable difference to each other or to the unmodified version, so
I've settled on the one for which gcc seems to generate the best code.
(If anyone cares to microoptimize this differently for an architecture
where it actually matters, feel free.)
Suggested by: Steve Bellovin's paper in IMW'02
switch to it before calling mi_startup(). The bootstack is WAY too small
for running acpica during probe/attach. While here, pass modulep/physfree
to the startup routine, rather than writing to the global variables in
locore.S.
Approved by: re (amd64/*)
This machine uses a non-standard scheme to specify the interrupts to
be assigned for devices in PCI slots; instead of giving the INO
or full interrupt number (which is done for the other devices in this
box), the firmware interrupt properties contain intpin numbers, which
have to be swizzled as usual on PCI-PCI bridges; however, the PCI host
bridge nodes have no interrupt map, so we need to guess the
correct INO by slot number of the device or the closest PCI-PCI
bridge leading to it, and the intpin.
To do this, this fix makes the following changes:
- Add a newbus method for sparc64 PCI host bridges to guess
the INO, and glue code in ofw_pci_orb_callback() to invoke it based
on a new quirk entry. The guessing is only done for interrupt numbers
too low to contain any IGN found on e450s.
- Create another new quirk entry was created to prevent mapping of EBus
interrupts at PCI level; the e450 has full INOs in the interrupt
properties of EBus devices, so trying to remap them could cause
problems.
- Set both quirk entries for e450s; remove the no-swizzle entry.
- Determine the psycho half (bus A or B) a driver instance manages
in psycho_attach()
- Implement the new guessing method for psycho, using the slot number,
psycho half and property value (intpin).
Thanks go to the testers, especially Brian Denehy, who tested many kernels
for me until I had found the right workaround.
Tested by: Brian Denehy <B.Denehy@90east.com>, jake, fenner,
Marius Strobl <marius@alchemy.franken.de>,
Marian Dobre <mari@onix.ro>
Approved by: re (scottl)
The current name is confusing, because it indicates to
the client that a bus_dmamap_sync() operation is not
necessary when the flag is specified, which is wrong.
The main purpose of this flag is to hint the underlying
architecture that DMA memory should be mapped in a coherent
way, but the architecture can ignore it. But if the
architecture does supports coherent mapping of memory, then
it makes bus_dmamap_sync() calls cheap.
This flag is the same as the one in NetBSD's Bus DMA.
Reviewed by: gibbs, scottl, des (implicitly)
Approved by: re@ (jhb)
nfs_lock.c. Right now, if we permit a signal to interrupt the sleep,
we will slip the lock and no process on that client, the server, or
any other client will be able to acquire the lock. This can happen,
for example, if a user hits Ctrl-C or Ctrl-T while a process is
waiting for the lock. By removing PCATCH, we prevent that from
happening, at the cost of not permitting a user-requested lock abort:
also nasty. However, a user interface bug might be preferable to a
serious semantic bug, so we go with that for now.
We need to teach the rpc.lockd/kernel protocol how to abort lock
requests, and rpc.lockd how to handle aborted lock requests; patches
for the kernel bit are floating around, but no rpc.lockd bit yet.
Approved by: re (scottl)
mismerged from the MAC tree, and didn't get picked up because warnings
are not normally fatal in per-module builds, only when they are linked
into a kernel (such as LINT).
Reported by: des and the technicolor tinderbox
Approved by: re (scottl)
Use the special LUNLEN_SINGLE_LEVEL constant for
post Rev A4 hardware for single byte luns. Without
this change, Rev B hardware would place the single
byte of lun data in byte 0 of the lun structure when
it should be in byte 1. Since there are few if any
devices on the market that support multiple luns in
target mode, the corrupted lun field (which was only
corrupted for non-zero luns) wasn't hurting us.
Approved by: re (rwatson)
aic79xx.h:
aic79xx.reg:
Return the SCB_TAG field to 16byte alignment.
It seems that on some PCI systems, SCBs are not
transferred correctly to the controller with
the previous placement of the SCB_TAG field.
Approved by: re (rwatson)
section to stop gcc generating the dwarf2 .eh_frame unwind tables. It
is dead weight for the time being. Maybe it can be used to perform
stack traces and/or get the location of function arguments in ddb, but
that requires a dwarf2 runtime interpreter, which we do not have.
Approved by: re (amd64 "safe" bits)
disassembler has not been updated yet, and will do some very strange
things. It does tracebacks (without function arguments due to regparm
calling conventions) if -fno-omit-frame-pointer is used (to come later).
This achieves basic functionality.
Approved by: re (amd64/* blanket)
in the kernel, the sysctl_register() call would fail, as expected.
However, when unloading this module again, the kernel would then panic
in sysctl_unregister(). Print a message error instead.
Submitted by: Nicolai Petri <nicolai@catpipe.net>
Reviewed by: imp
Approved by: re@ (jhb)
value to be written into tick_compare in tick_hardclock(). While
we were taking care that the value to be written was at least TICK_GRACE
ticks in the future, a vector interrupt could happen between calculating
the value and writing it. If it took longer than TICK_GRACE to complete
(which is doubtful for a single device-triggered vector interrupt, but
quite likely for some IPIs), the value written would be in the past
and tick interrupts (which drive hardclock and statclock) would stop
until %tick wraps around, which takes a long time.
Also, increase TICK_GRACE from 1000 to 10000 for good measure.
Reported by: kris
Reviewed by: jake
Approved by: re (scottl)
