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Add libevdev_disable_property

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On some devices, a kernel input property has been set in error and we need the
ability to disable that property.

Signed-off-by: Scott Jann <sjann@knight-rider.org>
This commit is contained in:
Scott Jann 2020-10-17 03:03:17 -05:00 • committed by Peter Hutterer
parent 8e94375bc6
commit 4226c7801b
4 changed files with 34 additions and 0 deletions
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10
libevdev/libevdev.c
View file

@ -1318,6 +1318,16 @@ libevdev_enable_property(struct libevdev *dev, unsigned int prop)
return 0;
}
LIBEVDEV_EXPORT int
libevdev_disable_property(struct libevdev *dev, unsigned int prop)
{
if (prop > INPUT_PROP_MAX)
return -1;
clear_bit(dev->props, prop);
return 0;
}
LIBEVDEV_EXPORT int
libevdev_has_event_type(const struct libevdev *dev, unsigned int type)
{

10
libevdev/libevdev.h
View file

@ -1388,6 +1388,16 @@ int libevdev_has_property(const struct libevdev *dev, unsigned int prop);
*/
int libevdev_enable_property(struct libevdev *dev, unsigned int prop);
/**
* @ingroup kernel
*
* @param dev The evdev device
* @param prop The input property to disable, one of INPUT_PROP_...
*
* @return 0 on success or -1 on failure
*/
int libevdev_disable_property(struct libevdev *dev, unsigned int prop);
/**
* @ingroup bits
*

7
libevdev/libevdev.sym
View file

@ -131,3 +131,10 @@ global:
local:
*;
} LIBEVDEV_1_6;
LIBEVDEV_1_10 {
global:
libevdev_disable_property;
local:
*;
} LIBEVDEV_1_7;

7
test/test-libevdev-has-event.c
View file

@ -313,6 +313,13 @@ START_TEST(test_set_input_props)
ck_assert_int_eq(libevdev_has_property(dev, INPUT_PROP_DIRECT), 0);
ck_assert_int_eq(libevdev_has_property(dev, INPUT_PROP_BUTTONPAD), 1);
/* Test disabling the properties too */
ck_assert_int_eq(libevdev_disable_property(dev, INPUT_PROP_MAX + 1), -1);
ck_assert_int_eq(libevdev_disable_property(dev, INPUT_PROP_DIRECT), 0);
ck_assert_int_eq(libevdev_disable_property(dev, INPUT_PROP_BUTTONPAD), 0);
ck_assert_int_eq(libevdev_has_property(dev, INPUT_PROP_DIRECT), 0);
ck_assert_int_eq(libevdev_has_property(dev, INPUT_PROP_BUTTONPAD), 0);
uinput_device_free(uidev);
libevdev_free(dev);
}