Commit Graph

27 Commits

Author SHA1 Message Date
Hans Petter Selasky
280f34c37c cuse(3): Make some clarifications in the manual page.
MFC after:	1 week
Sponsored by:	NVIDIA Networking
2022-07-20 10:41:11 +02:00
Hans Petter Selasky
58a8f6e9ec cuse(3): Allow allocating a memory buffer of exactly 2 GBytes.
The manual page date will be bumped separately.

MFC after:	1 week
Sponsored by:	NVIDIA Networking
2022-07-20 10:41:11 +02:00
Hans Petter Selasky
d14b53ee31 cuse(3): Allow shared memory allocations up to, but excluding 2 GBytes.
Currently the cuse(3) mmap(2) offset is split into 128 banks of 16 Mbytes.
Allow cuse(3) to make allocations that span multiple banks at the expense
of any fragmentation issues that may arise. Typically mmap(2) buffers are
well below 16 Mbytes. This allows 8K video resolution to work using webcamd.

Reviewed by:	markj @
Differential Revision:	https://reviews.freebsd.org/D35830
MFC after:	1 week
Sponsored by:	NVIDIA Networking
2022-07-20 10:41:11 +02:00
Hans Petter Selasky
2ca43c3dba cuse(3): Make cuse_vmfree() NULL safe.
MFC after:	1 week
Sponsored by:	NVIDIA Networking
2022-07-20 10:41:11 +02:00
Hans Petter Selasky
2c28cd09d9 cuse(3): Remove PAGE_SIZE from libcuse.
To allow for a dynamic page size on arm64 remove the static value from libcuse.

Differential Revision:	https://reviews.freebsd.org/D35585
MFC after:	1 week
Sponsored by:	NVIDIA Networking
2022-06-25 12:01:59 +02:00
Simon J. Gerraty
2c9a9dfc18 Update Makefile.depend files
Update a bunch of Makefile.depend files as
a result of adding Makefile.depend.options files

Reviewed by:	 bdrewery
MFC after:	1 week
Sponsored by:   Juniper Networks
Differential Revision:  https://reviews.freebsd.org/D22494
2019-12-11 17:37:53 +00:00
Hans Petter Selasky
db92a6cd51 Implement flag for telling cuse(3) clients if the peer is running in 32-bit
compat mode or not. This is useful when implementing compatibility ioctl(2)
handlers in userspace.

MFC after:		1 week
Sponsored by:		Mellanox Technologies
2019-04-18 19:04:07 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Hans Petter Selasky
9f16d9c95b Add support for new cuse(3) error code, CUSE_ERR_NO_DEVICE.
This error code is useful when emulating Linux input event
devices from userspace.

PR:			218626
Submitted by:		jan.kokemueller@gmail.com
MFC after:		1 week
Sponsored by:		Mellanox Technologies
2017-10-05 16:42:02 +00:00
Pedro F. Giffuni
1c5fd754bd libcuse: make more use of the howmany() macro when available.
We have a howmany() macro in the <sys/param.h> header that is
convenient to re-use as it makes things easier to read.
2016-04-26 01:20:16 +00:00
Glen Barber
a70cba9582 First pass through library packaging.
Sponsored by:	The FreeBSD Foundation
2016-02-04 21:16:35 +00:00
Hans Petter Selasky
beebd9aac8 Make CUSE usable with platforms where the size of "unsigned long" is
different from the size of a pointer.
2015-12-22 09:55:44 +00:00
Bryan Drewery
7b3ea376a2 META MODE: Prefer INSTALL=tools/install.sh to lessen the need for xinstall.host.
This both avoids some dependencies on xinstall.host and allows
bootstrapping on older releases to work due to lack of at least 'install -l'
support.

Sponsored by:	EMC / Isilon Storage Division
2015-11-25 19:10:28 +00:00
Bryan Drewery
54c7d75a06 META_MODE: Remove DEP_RELDIR from Makefile.depend files.
This has not been needed since r284171 in projects/bmake.

Sponsored by:	EMC / Isilon Storage Division
2015-09-25 19:26:08 +00:00
Simon J. Gerraty
ccfb965433 Add META_MODE support.
Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp
2015-06-13 19:20:56 +00:00
Simon J. Gerraty
98e0ffaefb Merge sync of head 2015-05-27 01:19:58 +00:00
Baptiste Daroussin
6b129086dc Convert libraries to use LIBADD
While here reduce a bit overlinking
2014-11-25 11:07:26 +00:00
Simon J. Gerraty
9268022b74 Merge from head@274682 2014-11-19 01:07:58 +00:00
Hans Petter Selasky
fc6e35c65c Fix compiler locking diagnostic warnings.
PR:	194289
2014-10-13 19:05:18 +00:00
Ed Schouten
8da5129816 Add lock annotations to libcuse.
- Add annotations to the lock/unlock function to indicate that the
  function is allowed to lock and unlock the underlying pthread mutex.

- Add __guarded_by() annotations to the global variables.

Approved by:	hselasky@
2014-09-01 19:56:28 +00:00
Simon J. Gerraty
ee7b0571c2 Merge head from 7/28 2014-08-19 06:50:54 +00:00
Hans Petter Selasky
f0f8856f68 Add missing DPADD to Makefile.
PR:	192733
2014-08-17 06:28:57 +00:00
Joel Dahl
df2d82e003 mdoc: remove superfluous paragraph macros. 2014-06-23 18:40:21 +00:00
Hans Petter Selasky
8958a2f085 Fix destruction of character devices by passing correct pointer to
kernel in IOCTL request.

Submitted by:	Andrey Zholos <aaz@q-fu.com>
2014-06-16 14:02:14 +00:00
Christian Brueffer
b5112fafbb Mdoc cleanup, typo and grammar fixes. 2014-06-06 12:06:40 +00:00
Christian Brueffer
556f150a10 Add missing MLINKs. 2014-06-06 11:52:30 +00:00
Hans Petter Selasky
fa0f6e62c6 Initial import of character device in userspace support for FreeBSD.
The CUSE library is a wrapper for the devfs kernel functionality which
is exposed through /dev/cuse . In order to function the CUSE kernel
code must either be enabled in the kernel configuration file or loaded
separately as a module. Currently none of the committed items are
connected to the default builds, except for installing the needed
header files. The CUSE code will be connected to the default world and
kernel builds in a follow-up commit.

The CUSE module was written by Hans Petter Selasky, somewhat inspired
by similar functionality found in FUSE. The CUSE library can be used
for many purposes. Currently CUSE is used when running Linux kernel
drivers in user-space, which need to create a character device node to
communicate with its applications. CUSE has full support for almost
all devfs functionality found in the kernel:
 - kevents
 - read
 - write
 - ioctl
 - poll
 - open
 - close
 - mmap
 - private per file handle data

Requested by several people. Also see "multimedia/cuse4bsd-kmod" in
ports.
2014-05-23 08:46:28 +00:00