branches: 1.1.2; 1.1.4; 1.1.6; 1.1.16;
* split the putter header into a kernel version and a userland version
+ install latter to /usr/include/dev/putter
* remove last dependencies to puffs from putter, it's completely
independent now

Change the kqueue filterops::f_isfd field to filterops::f_flags, and
define a flag FILTEROP_ISFD that has the meaning of the prior f_isfd.
Field and flag name aligned with OpenBSD.

This does not constitute a functional or ABI change, as the field location
and size, and the value placed in that field, are the same as the previous
code, but we're bumping __NetBSD_Version__ so 3rd-party module source code
can adapt, as needed.

NetBSD 9.99.89

Use sel{record,remove}_knote().

branches: 1.37.18;
add fo_name so we can identify the fileops in a simple way.

Use C99 initializer for filterops

Mostly done with spatch with touchups for indentation

@@
expression a;
identifier b,c,d;
identifier p;
@@
const struct filterops p =
- { a, b, c, d
+ {
+ .f_isfd = a,
+ .f_attach = b,
+ .f_detach = c,
+ .f_event = d,
};

branches: 1.35.8; 1.35.18;
Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.

branches: 1.34.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.

branches: 1.33.2; 1.33.4;
fix request leak.

branches: 1.32.2;
putter_fop_stat(): set st_mode to S_IFCHR.

Fixes PR #44807: something broken in stat(2).

Revert my fix.

Putter depends on puffs add missing dependience.

branches: 1.29.2; 1.29.4;
waiters gonna wait, so call seldestroy to wake them up when we go south

Call putterattach in modcmd init. Fixes lockdebug panic. Disable
unload, since putterdetach() is not implemented (i.e. current
implementation of modcmd fini is flawed), and I don't plan to fix
that now.

branches: 1.27.2; 1.27.4;
Adjust some comments which were written when this was still a part of puffs.

If a multithreaded app closes an fd while another thread is blocked in
read/write/accept, then the expectation is that the blocked thread will
exit and the close complete.
Since only one fd is affected, but many fd can refer to the same file,
the close code can only request the fs code unblock with ERESTART.
Fixed for pipes and sockets, ERESTART will only be generated after such
a close - so there should be no change for other programs.
Also rename fo_abort() to fo_restart() (this used to be fo_drain()).
Fixes PR/26567

Rename fo_drain() to fo_abort(), 'drain' is used to mean 'wait for output
do drain' in many places, whereas fo_drain() was called in order to force
blocking read()/write() etc calls to return to userspace so that a close()
call from a different thread can complete.
In the sockets code comment out the broken code in the inner function,
it was being called from compat code.

Mark putter as MODULE_CLASS_DRIVER to make it autoloadable. This
fixes autoloading of puffs upon mount.

Fix locking as Andy explained. Also fill in uid and gid like sys_pipe did.

Fix PR/37878 and PR/37550: Provide stat(2) for all devices and don't use
fbadop_stat.

Add fileops::fo_drain(), to be called from fd_close() when there is more
than one active reference to a file descriptor. It should dislodge threads
sleeping while holding a reference to the descriptor. Implemented only for
sockets but should be extended to pipes, fifos, etc.

Fixes the case of a multithreaded process doing something like the
following, which would have hung until the process got a signal.

thr0 accept(fd, ...)
thr1 close(fd)

Ansify function definitions w/o arguments. Generated with sed.

branches: 1.19.2;
Change major()/minor() to return 32-bit types again, called
devmajor_t/devminor_t, as proposed on tech-kern.
This avoids 64-bit arithmetics and 64-bit printf formats in parts
of the kernel where it is not really useful, and helps clarity.

Actually, revert previous - I doubt it would work with a non-rump kernel.
The filthy #ifdef _MODULE lives to stink another day.

die filthy #ifdef _MODULE, die!

branches: 1.16.2; 1.16.4;
KASSERT works better with == instead of =

Repeat after me: do not pollute sys with #ifdef _RUMPKERNEL

branches: 1.14.2; 1.14.4;
Don't call devsw_attach/detach if _MODULE is not defined.

Acquire kernel_lock in putter's fileops.

Don't build as module if _RUMPKERNEL is defined.

Return result of devsw_detach().

Support building putter as a module.

branches: 1.9.2; 1.9.4; 1.9.6;
Catch up with descriptor handling changes. See kern_descrip.c revision
1.173 for details.

Welcome to 4.99.55:

- Add a lot of missing selinit() and seldestroy() calls.

- Merge selwakeup() and selnotify() calls into a single selnotify().

- Add an additional 'events' argument to selnotify() call. It will
indicate which event (POLL_IN, POLL_OUT, etc) happen. If unknown,
zero may be used.

Note: please pass appropriate value of 'events' where possible.
Proposed on: <tech-kern>

branches: 1.7.2; 1.7.4; 1.7.8;
unstaticate putterdebug

branches: 1.6.6;
Allow EVFILT_WRITE kqfilters to be registered and map them to
seltrue_filtops.

Allow to register configuration routines to putter. Once a
configuration routine has been attached to the putter device minor
number, the configuration routine will be called when the device
is opened. This is required for subsystems which enter the kernel
only through the file descriptor and cannot configure themselves
via another route (like puffs does via the mount() syscall). Keep
the minor number 0 for "wildcard" uses where we do not require a
hardwired config routine (e.g. the puffs case).

branches: 1.4.2; 1.4.4; 1.4.6;
Don't specialcase minor device, treat all minors the same.

Bounds-check responses from userspace.

* split the putter header into a kernel version and a userland version
+ install latter to /usr/include/dev/putter
* remove last dependencies to puffs from putter, it's completely
independent now

Move putter code from directly under dev/ to dev/putter/

no functional change

branches: 1.1.2; 1.1.4; 1.1.6; 1.1.16;
* split the putter header into a kernel version and a userland version
+ install latter to /usr/include/dev/putter
* remove last dependencies to puffs from putter, it's completely
independent now

branches: 1.3.10;
Allow to register configuration routines to putter. Once a
configuration routine has been attached to the putter device minor
number, the configuration routine will be called when the device
is opened. This is required for subsystems which enter the kernel
only through the file descriptor and cannot configure themselves
via another route (like puffs does via the mount() syscall). Keep
the minor number 0 for "wildcard" uses where we do not require a
hardwired config routine (e.g. the puffs case).

branches: 1.2.2; 1.2.4; 1.2.6;
Bounds-check responses from userspace.

* split the putter header into a kernel version and a userland version
+ install latter to /usr/include/dev/putter
* remove last dependencies to puffs from putter, it's completely
independent now

* split the putter header into a kernel version and a userland version
+ install latter to /usr/include/dev/putter
* remove last dependencies to puffs from putter, it's completely
independent now

Move putter code from directly under dev/ to dev/putter/

no functional change