CVS log for src/sys/dev/wscons/wsdisplay_compat_usl.c

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Keyword substitution: kv
Default branch: MAIN

Sync w/ HEAD.

wsdisplay(4): Use C99 initializer for usl_syncops.

Avoid sketchy function pointer cast while here.

Move proc_lock into the data segment.  It was dynamically allocated because
at the time we had mutex_obj_alloc() but not __cacheline_aligned.

Sync with HEAD

Sync with HEAD, resolve a few conflicts

- Use kmem_intr_{alloc,free}, because on time out we need to free from an
  interrupt context.
- Remove parens from returns and useless casts from void.

update from HEAD

use sizeof(*var) instead of sizeof(type)

use kmem, don't check for allocation failure with KM_SLEEP

Sync with HEAD

to garnish, dust with _KERNEL_OPT

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

resync with head

fix a bunch of _IO() ioctl()s to actually work on LP64/BE
( the data pointer is abused to pass an integer, we get a pointer to it so
  we need to deref it to something the same size as a pointer to get the
  correct value )
now the PCVT compat code ( which is used for VT switching in and out of X )
works on sparc64

Sync with HEAD.

sync with head.

sync with head

Remove pfind() and pgfind(), fix locking in various broken uses of these.
Rename real routines to proc_find() and pgrp_find(), remove PFIND_* flags
and have consistent behaviour.  Provide proc_find_raw() for special cases.
Fix memory leak in sysctl_proc_corename().

COMPAT_LINUX: rework ptrace() locking, minimise differences between
different versions per-arch.

Note: while this change adds some formal cosmetics for COMPAT_DARWIN and
COMPAT_IRIX - locking there is utterly broken (for ages).

Fixes PR/43176.

sync with head

Don't call usl_sync_check_sig from an interrupt context. Call it only if waitok.
Stack trace:	mutex_vector_enter <- usl_sync_check_sig <- usl_detachproc <-
		wsdisplay_switch <- wskbd_translate <- wskbd_input <-
		pckbd_input <- pckbcintr <- intr_biglock_wrapper <-
		Xintr_ioapic_edge1
Reported by Anon Ymous

Sync with HEAD.

sync with head.

Network protocol interrupts can now block on locks, so merge the globals
proclist_mutex and proclist_lock into a single adaptive mutex (proc_lock).
Implications:

- Inspecting process state requires thread context, so signals can no longer
  be sent from a hardware interrupt handler. Signal activity must be
  deferred to a soft interrupt or kthread.

- As the proc state locking is simplified, it's now safe to take exit()
  and wait() out from under kernel_lock.

- The system spends less time at IPL_SCHED, and there is less lock activity.

sync with HEAD

Sync with HEAD.

sync with head

Sync with HEAD

restructure things a bit so that proclist_mutex is held between the
p_find() and the psignal() which is its purpose after all

sync with HEAD

sync with head.

Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.

Sync with HEAD.

Sync with head.

Use aprint API for output and convert to device_t/softc separation.

sync with head.

Use callout_setfunc/callout_schedule instead of callout_reset.
Use mstohz for the calculations.

sync with head.

Sync with head.

Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements

Adapt to callout API change.

Sync with HEAD.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

sync with head.

Merge newlock2 to head.

pfind() can no longer be used from interrupt context.

Acquire proclist_mutex before sending signals.

Sync with head.

Pull up following revision(s) (requested by elad in ticket #317):
	sys/compat/linux/arch/i386/linux_machdep.c: revision 1.120
	sys/dev/wscons/wsdisplay_compat_usl.c: revision 1.38
Adapt to recent machdep scope changes.
Pointed out by Kouichirou Hiratsuka, thanks!

sync with head.

Adapt to recent machdep scope changes.

Pointed out by Kouichirou Hiratsuka, thanks!

sync with head.

Sync with head.

__unused removal on arguments; approved by core.

COMPAT_10 implies COMPAT_11, so there's no need to test both.
Also collapse two tightly-nested #ifs into one.

sync with head

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

Use kauth(9) instead of securelevel.

okay cube@

sync with head

sync with head

- Use the LWP cached credentials where sane.
- Minor cosmetic changes.

sync with head.

Sync with head.

Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.

sync with head.

integrate kauth.

- Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
  that need it.

Approved by core.

Sync with head.

sync with head.

sync with head.

Merge 2006-03-28 NetBSD-current into the "peter-altq" branch.

Don't use intarg uninitialized in wsdisplay_usl_ioctl2. Fixes CID 2507

generic_authorize() -> kauth_authorize_generic().

Adapt to kernel authorization KPI.

merge ktrace-lwp.

Sync with head.

back out the changes to KD* ioctl()s for now, seem to break more than they
do good.

- remove a leftover debug printf()
- fix the other cases of _IO() type ioctl() abuse ( mainly keyboard related
  stuff )

Make the VT_* ioctl()s work in LP64/big endian platforms, like sparc64.
The problem is that these ioctl()s are declared as _IO() and expect to pass an
integer as argument, instead of a pointer. When dereferencing the argument
pointer in the ioctl() handler as an int we get the upper 32bit of the value so
we simply dereference it as long. Other _IO() ioctl()s may need similar fixes.

Tested on sparc64, sparc and macppc.

Sync with HEAD.

PR kern/28837: fix undef typo.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

use bounded string ops

remove license clauses 3 and 4 from my cpoyright notices

Apply the aborted ktrace-lwp changes to a specific branch.  This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it.  This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.

Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records.  The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

Merge the nathanw_sa branch.

Sync with HEAD.

Silence strict-alias warning.

Catch up to -current.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

Remove breaks after returns, unreachable returns and returns after
returns(!).

No longer need to pull in lwp.h; proc.h pulls it in for us.

Curproc->curlwp renaming.

Change uses of "curproc->l_proc" back to "curproc", which is more like the
original use. Bare uses of "curproc" are now "curlwp".

"curproc" is now #defined in proc.h as ((curlwp) ? (curlwp)->l_proc) : NULL)
so that it is always safe to reference curproc (*de*referencing curproc
is another story, but that's always been true).

catch up with -current on kqueue branch

Catch up to -current.
(CVS: It's not just a program. It's an adventure!)

Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command".  ERESTART is -1, which can lead to
confusion.  ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4.  No ioctl code should now return -1 anywhere.  The
ioctl() system call is now properly restartable.

Sync kqueue branch with -current.

Catch up to -current.

add/cleanup RCSIDs

Catch up to -current.

ANSIfy.

Initial commit of scheduler activations and lightweight process support.

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

Pull up to 1.5 branch approved by jhawk:
Rev 1.13:
	In wsdisplay_usl_ioctl2(), use a u_long for the request to be
	passed off to wsdisplay_internal_ioctl() instead of an int.
	With this, the pcvt compat ioctl's work on an Alpha and
	probably other 64 bit archs.
Rev 1.15:
	KNF - variable declarations.

KNF - variable declarations.

Introduce WSDISPLAY_NULLSCREEN to allow low level device to detach control
process. Hpcmips frame buffer driver(hpcfb) call wsdisplay_switch with
WSDISPLAY_NULLSCREEN to notify user process of suspend/resume event.

In wsdisplay_usl_ioctl2(), use a u_long for the request to be passed off
to wsdisplay_internal_ioctl() instead of an int.
With this, the pcvt compat ioctl's work on an Alpha and probably other
64 bit archs.

New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
  resource allocation.
- Insertion and removal of callouts is constant time, important as
  this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.

Pull up to last week's -current.

-allow the "show_screen" call to the display driver to complete
 asynchronously, in the same style like the process attach/detach functions
-intercept the "cnpollc" call which originally went directly to the
 keyboard driver and keep track whether the console is in "polling" state
 (DDB!)
-pass a NULL callback to the screen switcher and the process attach/detach
 functions if the console is "polling", to tell them that asynchronous
 completion is forbidden

bring in latest KAME (as of 19991130, KAME/NetBSD141) into kame branch
just for reference purposes.
This commit includes 1.4 -> 1.4.1 sync for kame branch.

The branch does not compile at all (due to the lack of ALTQ and some other
source code).  Please do not try to modify the branch, this is just for
referenre purposes.

synchronization to latest KAME will take place on HEAD branch soon.

Sync w/ trunk.

Pull up revision 1.10 (requested by mycroft):
  Enable VT-switching ioctls on ttyEcfg, which allows Linux X servers
  to work when properly configured (with symlink /emul/linux/dev/tty0
  -> /dev/ttyEcfg).

Split wsdisplay_usl_ioctl() into two functions -- one which is screen-dependent
and one which isn't.  The latter is now used for ttyEcfg, enabling the
VT-switching ioctls to work on it.  (This allows Linux X servers to work when
/emul/linux/dev/tty0 is linked to /dev/ttyEcfg.)

file wsdisplay_compat_usl.c was added on branch fvdl-softdep on 1999-10-19 00:03:19 +0000

Split wsdisplay_usl_ioctl() into two functions -- one which is screen-dependent
and one which isn't.  The latter is now used for ttyEcfg, enabling the
VT-switching ioctls to work on it.  (This allows Linux X servers to work when
/emul/linux/dev/tty0 is linked to /dev/ttyEcfg.)

pullup 1.7->1.9 (christos): fix X server bell pitch

Sync w/ -current.

Don't let bd.which be unitialized... Thanks Dave!

PR/7665: Dave Sainty: X server bell pitch setting doesn't reflect reality
Applied with a little more error checking.

make the timeout for process/vt synchronization "config" settable and
ddb/gdb patchable

improve error handling in 2 cases:
1. If the current screen becomes invalid (ie no focus anymore), always
   set the keyboard to translating mode. Otherwise, we could get stuck
   because the command keystokes don't come through.
2. Catch errors in attaching to a process (X server) - For this,
   implement a callback mechanism similar to the detach case. Add an
   argument to report an errno via callback.

* defopt COMPAT_{09,10,11,12,13} and COMPAT_NOMID (from unsaved buffers).
TODO: revisit interaction between native compat and emul compat usage.

defopt COMPAT_FREEBSD

change initialization order to avoid a race condition if a switch is
performed at the same time

clean up if a controlling process exits while a switch is in progress,
initialize the flag used for keeping track of this

Implement the VT access and keyboard control ioctl()s needed for
compatibility to PCVT, syscons and the Linux console.