Commit graph

12 commits

Author SHA1 Message Date
Dan Carpenter
05be8b81aa Input: force feedback - potential integer wrap in input_ff_create()
The problem here is that max_effects can wrap on 32 bits systems.
We'd allocate a smaller amount of data than sizeof(struct ff_device).
The call to kcalloc() on the next line would fail but it would write
the NULL return outside of the memory we just allocated causing data
corruption.

The call path is that uinput_setup_device() get ->ff_effects_max from
the user and sets the value in the ->private_data struct.  From there
it is:
-> uinput_ioctl_handler()
   -> uinput_create_device()
      -> input_ff_create(dev, udev->ff_effects_max);

I've also changed ff_effects_max so it's an unsigned int instead of
a signed int as a cleanup.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-10-12 21:13:11 -07:00
Henrik Rydberg
85b7720039 Input: introduce device properties
Today, userspace sets up an input device based on the data it emits.
This is not always enough; a tablet and a touchscreen may emit exactly
the same data, for instance, but the former should be set up with a
pointer whereas the latter does not need to. Recently, a new type of
touchpad has emerged where the buttons are under the pad, which
changes logic without changing the emitted data. This patch introduces
a new ioctl, EVIOCGPROP, which enables user access to a set of device
properties useful during setup. The properties are given as a bitmap
in the same fashion as the event types, and are also made available
via sysfs, uevent and /proc/bus/input/devices.

Acked-by: Ping Cheng <pingc@wacom.com>
Acked-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2010-12-20 09:37:33 +01:00
Kay Sievers
8905aaafb4 Input: uinput - add devname alias to allow module on-demand load
Recent modprobe and udev versions allow to create device nodes
for modules which are not loaded. Only the first access will cause
the in-kernel module loader to pull-in the module. Systems which
never access the device node will not needlessly load the module,
and no longer need init scripts or other facilities to unconditionally
load it.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-21 00:37:40 -07:00
Daniel Mack
81c2a3ba49 Input: use ABS_CNT rather than (ABS_MAX + 1)
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-05-20 23:05:28 -07:00
Jiri Slaby
7b19ada2ed get rid of input BIT* duplicate defines
get rid of input BIT* duplicate defines

use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<<x)

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <dtor@mail.ru>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: <lenb@kernel.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: <perex@suse.cz>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <vernux@us.ibm.com>
Cc: <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:42 -07:00
Mike Frysinger
a830df367c Input: pull input.h into uinpit.h
uinput.h relies on structures found in input.h, so pull in the header

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-05-03 00:55:34 -04:00
Anssi Hannula
ff46255123 Input: uinput - switch to the new FF interface
The userspace interface of the force feedback part is changed and
documentation in uinput.h is updated accordingly. MODULE_VERSION
is also incremented to reflect the revision.

Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-19 01:41:09 -04:00
Dmitry Torokhov
221979aad6 Input: uinput - semaphore to mutex conversion
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-02-19 00:22:36 -05:00
Dmitry Torokhov
59c7c0377e Input: uinput - add UI_SET_SWBIT ioctl
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-11-20 00:51:33 -05:00
Dmitry Torokhov
29506415a0 Input: uinput - convert to dynalloc allocation
Also introduce proper locking when creating/deleting device.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-11-20 00:51:22 -05:00
Dmitry Torokhov
0048e6030d Input: uinput - use completions instead of events and manual
wakeups in force feedback code.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-06-30 00:48:14 -05:00
Linus Torvalds
1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00