One bug fixed: Use getmicrouptime() to trigger reseeds so that we
cannot be tricked by a clock being stepped backwards.
Express parameters in natural units and with natural names.
Don't use struct timeval more than we need to.
Various stylistic and readability polishing.
Introduce arc4rand(void *ptr, u_int len, int reseed) function which
returns a stream of pseudo-random bytes, observing the automatic
reseed criteria as well as allowing forced reseeds.
Rewrite arc4random() in terms of arc4rand().
Sponsored by: DARPA & NAI Labs.
- add wrappers for mmap2(2) and ftruncate64(2) system calls;
- don't spam console with printf's when VFAT_READDIR_BOTH ioctl(2) is invoked;
- add support for SOUND_MIXER_READ_STEREODEVS ioctl(2);
- make msgctl(IPC_STAT) and IPC_SET actually working by converting from
BSD msqid_ds to Linux and vice versa;
- properly return EINVAL if semget(2) is called with nsems being negative.
Reviewed by: marcel
Approved by: marcel
Tested with: LSB runtime test
clear the bit. This allows ata driver to attach its children because
it needs the interrupts enabled to succeed.
Submitted by: iwasaki-san
o Spell CardBus as CardBus, not Cardbus or CardBUS while I'm here.
vcanrecycle to check a free vnode's availability. If it is
available, vcanrecycle returns an error code of zero and the
vnode in question locked. The getnewvnode routine then used
to call vn_start_write with the V_NOWAIT flag. If the filesystem
was suspended while taking a snapshot, the vn_start_write would
fail but getnewvnode would fail to unlock the vnode, instead
leaving it locked on the freelist. The result would be that the
vnode would be locked forever and would eventually hang the
system with a race to the root when it was attempted to recycle
it. This fix moves the vn_start_write check into vcanrecycle
where it will properly unlock the vnode if it is unavailable
for recycling due to filesystem suspension.
Sponsored by: DARPA & NAI Labs.
allow us to avoid nasty by-hand string parsing stuff in a number of
places in the kernel, reducing the risk of unexpected consequences
for kernel correctness.
on the _file() theme that do not follow symlinks. Sync to MAC tree.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
sched_lock. This means that we no longer access p_limit in mi_switch()
and the p_limit pointer can be protected by the proc lock.
- Remove PRS_ZOMBIE check from CPU limit test in mi_switch(). PRS_ZOMBIE
processes don't call mi_switch(), and even if they did there is no longer
the danger of p_limit being NULL (which is what the original zombie check
was added for).
- When we bump the current processes soft CPU limit in ast(), just bump the
private p_cpulimit instead of the shared rlimit. This fixes an XXX for
some value of fix. There is still a (probably benign) bug in that this
code doesn't check that the new soft limit exceeds the hard limit.
Inspired by: bde (2)
that add an instance of themselves. The npx(4) driver doesn't even check
the npx 'port' hint but hardcodes IO_NPX instead. The npx(4) driver also
will use isa IRQ 13 (on x86, 8 on pc98) by default if no 'irq' hint is
specified, so we don't need that hint either.
Whenever doing a copy-on-write check, first look in the list of
initially allocated blocks to see if it is there. If so, no further
check is needed. If not, fall through and do the full check. This
change eliminates one of two known deadlocks caused by snapshots.
Handling the second deadlock will be the subject of another check-in.
This change also reduces the cost of the copy-on-write check by
speeding up the verification of frequently checked blocks.
Sponsored by: DARPA & NAI Labs.
Whenever doing a copy-on-write check, first look in the list of
initially allocated blocks to see if it is there. If so, no further
check is needed. If not, fall through and do the full check. This
change eliminates one of two known deadlocks caused by snapshots.
Handling the second deadlock will be the subject of another check-in.
This change also reduces the cost of the copy-on-write check by
speeding up the verification of frequently checked blocks.
Sponsored by: DARPA & NAI Labs.
even when the underlying device has a larger sector size. Therefore,
the filesystem code should not (and with this patch does not) try to
use the underlying sector size when doing disk block address calculations.
This patch fixes problems in -current when using the swap-based
memory-disk device (mdconfig -a -t swap ...). This bugfix is not
relevant to -stable as -stable does not have the memory-disk device.
Sponsored by: DARPA & NAI Labs.
in specific situations. The owner thread must be blocked, and the
borrower can not proceed back to user space with the borrowed KSE.
The borrower will return the KSE on the next context switch where
teh owner wants it back. This removes a lot of possible
race conditions and deadlocks. It is consceivable that the
borrower should inherit the priority of the owner too.
that's another discussion and would be simple to do.
Also, as part of this, the "preallocatd spare thread" is attached to the
thread doing a syscall rather than the KSE. This removes the need to lock
the scheduler when we want to access it, as it's now "at hand".
DDB now shows a lot mor info for threaded proceses though it may need
some optimisation to squeeze it all back into 80 chars again.
(possible JKH project)
Upcalls are now "bound" threads, but "KSE Lending" now means that
other completing syscalls can be completed using that KSE before the upcall
finally makes it back to the UTS. (getting threads OUT OF THE KERNEL is
one of the highest priorities in the KSE system.) The upcall when it happens
will present all the completed syscalls to the KSE for selection.
The problem is that the code does a check for the granparent of
the Promise chip, if this is a bridge of the right type, we have
a TX4 on our hands, and need to handle that ones "issues".
Now the grandparent check cause subtle bugs in the newbus system,
mainly that pci_get_devid doesn't return an error value.
This patch works around the issue by using BUS_READ_IVAR() instead.
structure. This has been broken since 1998, but probably hasn't been
noticed because it takes a read/write of 64K blocks (32MB with 512 byte
blocks) to trigger using the 12 byte read/write CDB in scsi_read_write().
Submitted by: "Moore, Eric Dean" <emoore@lsil.com>
MFC after: 3 days
divide/remainder calls. For reasons not resolved, compiling the
relevant routines from libkern into boot2 results in stack corruption.
Do the simple thing: Don't use 64bit divide/remainder operations.
Sponsored by: DARPA & NAI Labs
among other things, the DEVFS rule subsystem to match nodes against a
path pattern supplied by the user.
fnmatch.c was repo-copied from src/lib/libc/gen/fnmatch.c, and the
only changes to it are those necessary to make it compile in the
kernel. The relevant parts of fnmatch.h were imported into libkern.h.
Approved by: -arch
o Implement the thread killing interlock as described by jhb in arch@
while talking to markm.
o Hold Giant around cbb_insert()/cbb_remove(). Deep in the belly of
the vm code we panic if we don't hold this when we activate the memory
for reading the CIS.
o If we had to do the kludge alloc, then do a kludge free.
configuration device hierarchy. Device arrival, departure and not
matched are presently reported. This will be the basis for devd, which
I still need to polish a little more before I commit it. If you don't
use /dev/devctl, it will be a noop.
o Allow the bus_debug variable to be set via the bus.debug tunable.
o Return pnpinfo and location info via the devinfo interface to userland.
devinfo(8) needs to be updated to print it.
o Better resume code. Move the comments around. Force the socket state to
be querried. Ack the interrupts properly.
o Intercept the interrupt requests and keep a list of interrupts to service
ourselves. When the card attaches, set its OK bit. When we get a card
status change interrupt for that card, clear the OK bit. Don't call the
ISR if the OK bit is cleared. Iwasaki-san and yamamoto-san have both
sent me patches that fix the same problem this fixes, but at the pccard
level.
o Try to get the signalling of the thread to actually die. This might not be
100% right, but it is less wrong than before.
o Add a SIC next to a TI type that looks like it could be wrong, but isn't.
the card.
o Add comments about how we're doing the CIS activation.
o Add location and pnp info functions.
o Add better code to hopefully deal with ata cards better (and other drivers
that allocate resources that we didn't preallocate from the CIS). OLDCARD
used to allow it, but NEWCARD was pickier. I'm not 100% sure this works,
but it doesn't break anything.
give us slightly better error checking than before and interpret what
default bits mean better. See the NetBSD CVS tree for the authors of
these changes (revs 1.10 .. 1.17).
Note, we return the PCI pnp info, but in fact that's wrong to do
since that data is not defined for CardBus cards. CardBus says that
these registers are undefined and one should use the CIS to do
device matching. To date, all CardBus cards have had these
registered defined, no doubt because they are using common silicon
to produce both the PCI cards and the CardBus cards. However, it isn't
any worse than the rest of the system, so just note it in passing and
move on.
o Also sort prototypes while I'm here.
Conditionalize the "XX bytes left" checks reference on UFS1/UFS12.
Conditionally build the necessary 64bit math for boot2 if UFS12.
Sponsored by: DARPA & NAI Labs.
revision 1.218. This bug caused a "struct file" reference to be
leaked if VOP_ADVLOCK(), vn_start_write(), or mac_check_vnode_write()
failed during the open operation.
PR: kern/43739
Reported by: Arne Woerner <woerner@mediabase-gmbh.de>
currently disabled):
o Don't use constants for the output parameter, use the iparam count as a
pointer to the first result location.
o Fix bits vs bytes counting problems.
o Split out the hardware and software normalization versions of modexp.
o Enable hardware normalization for chips that support it.
o On reset, disable hardware normalization for 582x and make sure the
chip is in little endian mode.
o Since sw normalization is now the only option, simplify normalization
handling.
Also fix RNG harvesting: disabling PK support (for the moment) had disabled
the MCR2 interrupt; consider both KEY support and RNG support when deciding
whether or not to enable it.
Obtained from: openbsd
It seems that the existence of a "depend" target in src/sys/boot is not
to be taken as an indication that it actually does what one would expect,
at least it clearly threw my testing off.
Apologies to: jhb
for processing callbacks. This closes race conditions caused by locking
too many things with a single mutex.
o reclaim crypto requests under certain (impossible) failure conditions
