mirror of
https://gitlab.freedesktop.org/libevdev/libevdev.git
synced 2025-12-20 17:20:05 +01:00
9dee4db9d7
libevdev_new() can only fail on allocation failures, but with an fd the failure options are more. Split into a new function that can return an error code. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/*
|
|
* Copyright © 2013 Red Hat, Inc.
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that copyright
|
|
* notice and this permission notice appear in supporting documentation, and
|
|
* that the name of the copyright holders not be used in advertising or
|
|
* publicity pertaining to distribution of the software without specific,
|
|
* written prior permission. The copyright holders make no representations
|
|
* about the suitability of this software for any purpose. It is provided "as
|
|
* is" without express or implied warranty.
|
|
*
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
* OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <assert.h>
|
|
#include <linux/input.h>
|
|
|
|
#include "libevdev.h"
|
|
#include "event-names.h"
|
|
|
|
static void
|
|
print_abs_bits(struct libevdev *dev, int axis)
|
|
{
|
|
const struct input_absinfo *abs;
|
|
|
|
if (!libevdev_has_event_code(dev, EV_ABS, axis))
|
|
return;
|
|
|
|
abs = libevdev_get_abs_info(dev, axis);
|
|
|
|
printf(" Value %6d\n", abs->value);
|
|
printf(" Min %6d\n", abs->minimum);
|
|
printf(" Max %6d\n", abs->maximum);
|
|
if (abs->fuzz)
|
|
printf(" Fuzz %6d\n", abs->fuzz);
|
|
if (abs->flat)
|
|
printf(" Flat %6d\n", abs->flat);
|
|
if (abs->resolution)
|
|
printf(" Resolution %6d\n", abs->resolution);
|
|
}
|
|
|
|
static void
|
|
print_code_bits(struct libevdev *dev, unsigned int type, unsigned int max)
|
|
{
|
|
unsigned int i;
|
|
for (i = 0; i <= max; i++) {
|
|
if (!libevdev_has_event_code(dev, type, i))
|
|
continue;
|
|
|
|
printf(" Event code %i (%s)\n", i, event_get_code_name(type, i));
|
|
if (type == EV_ABS)
|
|
print_abs_bits(dev, i);
|
|
}
|
|
}
|
|
|
|
static void
|
|
print_bits(struct libevdev *dev)
|
|
{
|
|
unsigned int i;
|
|
printf("Supported events:\n");
|
|
|
|
for (i = 0; i <= EV_MAX; i++) {
|
|
if (libevdev_has_event_type(dev, i))
|
|
printf(" Event type %d (%s)\n", i, event_get_type_name(i));
|
|
switch(i) {
|
|
case EV_KEY:
|
|
print_code_bits(dev, EV_KEY, KEY_MAX);
|
|
break;
|
|
case EV_REL:
|
|
print_code_bits(dev, EV_REL, REL_MAX);
|
|
break;
|
|
case EV_ABS:
|
|
print_code_bits(dev, EV_ABS, ABS_MAX);
|
|
break;
|
|
case EV_LED:
|
|
print_code_bits(dev, EV_LED, LED_MAX);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
print_props(struct libevdev *dev)
|
|
{
|
|
unsigned int i;
|
|
printf("Properties:\n");
|
|
|
|
for (i = 0; i <= INPUT_PROP_MAX; i++) {
|
|
if (libevdev_has_property(dev, i))
|
|
printf(" Property type %d (%s)\n", i, input_prop_map[i]);
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
struct libevdev *dev;
|
|
const char *file;
|
|
int fd;
|
|
int rc;
|
|
|
|
|
|
if (argc < 2)
|
|
return 1;
|
|
|
|
file = argv[1];
|
|
fd = open(file, O_RDONLY | O_NONBLOCK);
|
|
if (fd < 0) {
|
|
perror("Failed to open device");
|
|
return 1;
|
|
}
|
|
|
|
rc = libevdev_new_from_fd(fd, &dev);
|
|
if (rc < 0) {
|
|
fprintf(stderr, "Failed to init libevdev (%s)\n", strerror(-rc));
|
|
return 1;
|
|
}
|
|
|
|
printf("Input device ID: bus %#x vendor %#x product %#x\n",
|
|
libevdev_get_bustype(dev),
|
|
libevdev_get_vid(dev),
|
|
libevdev_get_pid(dev));
|
|
printf("Input device name: \"%s\"\n", libevdev_get_name(dev));
|
|
print_bits(dev);
|
|
print_props(dev);
|
|
|
|
libevdev_free(dev);
|
|
|
|
return 0;
|
|
}
|