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Diffstat (limited to 'src/udev/udev-builtin-input_id.c')
-rw-r--r--src/udev/udev-builtin-input_id.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/src/udev/udev-builtin-input_id.c b/src/udev/udev-builtin-input_id.c
deleted file mode 100644
index 59b9804dc4..0000000000
--- a/src/udev/udev-builtin-input_id.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- * expose input properties via udev
- *
- * Copyright (C) 2009 Martin Pitt <martin.pitt@ubuntu.com>
- * Portions Copyright (C) 2004 David Zeuthen, <david@fubar.dk>
- * Copyright (C) 2011 Kay Sievers <kay@vrfy.org>
- * Copyright (C) 2014 Carlos Garnacho <carlosg@gnome.org>
- * Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <errno.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <linux/limits.h>
-#include <linux/input.h>
-
-#include "fd-util.h"
-#include "stdio-util.h"
-#include "string-util.h"
-#include "udev.h"
-#include "util.h"
-
-/* we must use this kernel-compatible implementation */
-#define BITS_PER_LONG (sizeof(unsigned long) * 8)
-#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
-#define OFF(x) ((x)%BITS_PER_LONG)
-#define BIT(x) (1UL<<OFF(x))
-#define LONG(x) ((x)/BITS_PER_LONG)
-#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)
-
-static inline int abs_size_mm(const struct input_absinfo *absinfo) {
- /* Resolution is defined to be in units/mm for ABS_X/Y */
- return (absinfo->maximum - absinfo->minimum) / absinfo->resolution;
-}
-
-static void extract_info(struct udev_device *dev, const char *devpath, bool test) {
- char width[DECIMAL_STR_MAX(int)], height[DECIMAL_STR_MAX(int)];
- struct input_absinfo xabsinfo = {}, yabsinfo = {};
- _cleanup_close_ int fd = -1;
-
- fd = open(devpath, O_RDONLY|O_CLOEXEC);
- if (fd < 0)
- return;
-
- if (ioctl(fd, EVIOCGABS(ABS_X), &xabsinfo) < 0 ||
- ioctl(fd, EVIOCGABS(ABS_Y), &yabsinfo) < 0)
- return;
-
- if (xabsinfo.resolution <= 0 || yabsinfo.resolution <= 0)
- return;
-
- xsprintf(width, "%d", abs_size_mm(&xabsinfo));
- xsprintf(height, "%d", abs_size_mm(&yabsinfo));
-
- udev_builtin_add_property(dev, test, "ID_INPUT_WIDTH_MM", width);
- udev_builtin_add_property(dev, test, "ID_INPUT_HEIGHT_MM", height);
-}
-
-/*
- * Read a capability attribute and return bitmask.
- * @param dev udev_device
- * @param attr sysfs attribute name (e. g. "capabilities/key")
- * @param bitmask: Output array which has a sizeof of bitmask_size
- */
-static void get_cap_mask(struct udev_device *dev,
- struct udev_device *pdev, const char* attr,
- unsigned long *bitmask, size_t bitmask_size,
- bool test) {
- const char *v;
- char text[4096];
- unsigned i;
- char* word;
- unsigned long val;
-
- v = udev_device_get_sysattr_value(pdev, attr);
- if (!v)
- v = "";
-
- xsprintf(text, "%s", v);
- log_debug("%s raw kernel attribute: %s", attr, text);
-
- memzero(bitmask, bitmask_size);
- i = 0;
- while ((word = strrchr(text, ' ')) != NULL) {
- val = strtoul (word+1, NULL, 16);
- if (i < bitmask_size/sizeof(unsigned long))
- bitmask[i] = val;
- else
- log_debug("ignoring %s block %lX which is larger than maximum size", attr, val);
- *word = '\0';
- ++i;
- }
- val = strtoul (text, NULL, 16);
- if (i < bitmask_size / sizeof(unsigned long))
- bitmask[i] = val;
- else
- log_debug("ignoring %s block %lX which is larger than maximum size", attr, val);
-
- if (test) {
- /* printf pattern with the right unsigned long number of hex chars */
- xsprintf(text, " bit %%4u: %%0%zulX\n",
- 2 * sizeof(unsigned long));
- log_debug("%s decoded bit map:", attr);
- val = bitmask_size / sizeof (unsigned long);
- /* skip over leading zeros */
- while (bitmask[val-1] == 0 && val > 0)
- --val;
- for (i = 0; i < val; ++i) {
- DISABLE_WARNING_FORMAT_NONLITERAL;
- log_debug(text, i * BITS_PER_LONG, bitmask[i]);
- REENABLE_WARNING;
- }
- }
-}
-
-/* pointer devices */
-static bool test_pointers(struct udev_device *dev,
- const unsigned long* bitmask_ev,
- const unsigned long* bitmask_abs,
- const unsigned long* bitmask_key,
- const unsigned long* bitmask_rel,
- const unsigned long* bitmask_props,
- bool test) {
- bool has_abs_coordinates = false;
- bool has_rel_coordinates = false;
- bool has_mt_coordinates = false;
- bool has_joystick_axes_or_buttons = false;
- bool is_direct = false;
- bool has_touch = false;
- bool has_3d_coordinates = false;
- bool has_keys = false;
- bool stylus_or_pen = false;
- bool finger_but_no_pen = false;
- bool has_mouse_button = false;
- bool is_mouse = false;
- bool is_touchpad = false;
- bool is_touchscreen = false;
- bool is_tablet = false;
- bool is_joystick = false;
- bool is_accelerometer = false;
- bool is_pointing_stick= false;
-
- has_keys = test_bit(EV_KEY, bitmask_ev);
- has_abs_coordinates = test_bit(ABS_X, bitmask_abs) && test_bit(ABS_Y, bitmask_abs);
- has_3d_coordinates = has_abs_coordinates && test_bit(ABS_Z, bitmask_abs);
- is_accelerometer = test_bit(INPUT_PROP_ACCELEROMETER, bitmask_props);
-
- if (!has_keys && has_3d_coordinates)
- is_accelerometer = true;
-
- if (is_accelerometer) {
- udev_builtin_add_property(dev, test, "ID_INPUT_ACCELEROMETER", "1");
- return true;
- }
-
- is_pointing_stick = test_bit(INPUT_PROP_POINTING_STICK, bitmask_props);
- stylus_or_pen = test_bit(BTN_STYLUS, bitmask_key) || test_bit(BTN_TOOL_PEN, bitmask_key);
- finger_but_no_pen = test_bit(BTN_TOOL_FINGER, bitmask_key) && !test_bit(BTN_TOOL_PEN, bitmask_key);
- has_mouse_button = test_bit(BTN_LEFT, bitmask_key);
- has_rel_coordinates = test_bit(EV_REL, bitmask_ev) && test_bit(REL_X, bitmask_rel) && test_bit(REL_Y, bitmask_rel);
- has_mt_coordinates = test_bit(ABS_MT_POSITION_X, bitmask_abs) && test_bit(ABS_MT_POSITION_Y, bitmask_abs);
-
- /* unset has_mt_coordinates if devices claims to have all abs axis */
- if (has_mt_coordinates && test_bit(ABS_MT_SLOT, bitmask_abs) && test_bit(ABS_MT_SLOT - 1, bitmask_abs))
- has_mt_coordinates = false;
- is_direct = test_bit(INPUT_PROP_DIRECT, bitmask_props);
- has_touch = test_bit(BTN_TOUCH, bitmask_key);
- /* joysticks don't necessarily have buttons; e. g.
- * rudders/pedals are joystick-like, but buttonless; they have
- * other fancy axes */
- has_joystick_axes_or_buttons = test_bit(BTN_TRIGGER, bitmask_key) ||
- test_bit(BTN_A, bitmask_key) ||
- test_bit(BTN_1, bitmask_key) ||
- test_bit(ABS_RX, bitmask_abs) ||
- test_bit(ABS_RY, bitmask_abs) ||
- test_bit(ABS_RZ, bitmask_abs) ||
- test_bit(ABS_THROTTLE, bitmask_abs) ||
- test_bit(ABS_RUDDER, bitmask_abs) ||
- test_bit(ABS_WHEEL, bitmask_abs) ||
- test_bit(ABS_GAS, bitmask_abs) ||
- test_bit(ABS_BRAKE, bitmask_abs);
-
- if (has_abs_coordinates) {
- if (stylus_or_pen)
- is_tablet = true;
- else if (finger_but_no_pen && !is_direct)
- is_touchpad = true;
- else if (has_mouse_button)
- /* This path is taken by VMware's USB mouse, which has
- * absolute axes, but no touch/pressure button. */
- is_mouse = true;
- else if (has_touch || is_direct)
- is_touchscreen = true;
- else if (has_joystick_axes_or_buttons)
- is_joystick = true;
- }
- if (has_mt_coordinates) {
- if (stylus_or_pen)
- is_tablet = true;
- else if (finger_but_no_pen && !is_direct)
- is_touchpad = true;
- else if (has_touch || is_direct)
- is_touchscreen = true;
- }
-
- if (has_rel_coordinates && has_mouse_button)
- is_mouse = true;
-
- if (is_pointing_stick)
- udev_builtin_add_property(dev, test, "ID_INPUT_POINTINGSTICK", "1");
- if (is_mouse)
- udev_builtin_add_property(dev, test, "ID_INPUT_MOUSE", "1");
- if (is_touchpad)
- udev_builtin_add_property(dev, test, "ID_INPUT_TOUCHPAD", "1");
- if (is_touchscreen)
- udev_builtin_add_property(dev, test, "ID_INPUT_TOUCHSCREEN", "1");
- if (is_joystick)
- udev_builtin_add_property(dev, test, "ID_INPUT_JOYSTICK", "1");
- if (is_tablet)
- udev_builtin_add_property(dev, test, "ID_INPUT_TABLET", "1");
-
- return is_tablet || is_mouse || is_touchpad || is_touchscreen || is_joystick || is_pointing_stick;
-}
-
-/* key like devices */
-static bool test_key(struct udev_device *dev,
- const unsigned long* bitmask_ev,
- const unsigned long* bitmask_key,
- bool test) {
- unsigned i;
- unsigned long found;
- unsigned long mask;
- bool ret = false;
-
- /* do we have any KEY_* capability? */
- if (!test_bit(EV_KEY, bitmask_ev)) {
- log_debug("test_key: no EV_KEY capability");
- return false;
- }
-
- /* only consider KEY_* here, not BTN_* */
- found = 0;
- for (i = 0; i < BTN_MISC/BITS_PER_LONG; ++i) {
- found |= bitmask_key[i];
- log_debug("test_key: checking bit block %lu for any keys; found=%i", (unsigned long)i*BITS_PER_LONG, found > 0);
- }
- /* If there are no keys in the lower block, check the higher block */
- if (!found) {
- for (i = KEY_OK; i < BTN_TRIGGER_HAPPY; ++i) {
- if (test_bit(i, bitmask_key)) {
- log_debug("test_key: Found key %x in high block", i);
- found = 1;
- break;
- }
- }
- }
-
- if (found > 0) {
- udev_builtin_add_property(dev, test, "ID_INPUT_KEY", "1");
- ret = true;
- }
-
- /* the first 32 bits are ESC, numbers, and Q to D; if we have all of
- * those, consider it a full keyboard; do not test KEY_RESERVED, though */
- mask = 0xFFFFFFFE;
- if ((bitmask_key[0] & mask) == mask) {
- udev_builtin_add_property(dev, test, "ID_INPUT_KEYBOARD", "1");
- ret = true;
- }
-
- return ret;
-}
-
-static int builtin_input_id(struct udev_device *dev, int argc, char *argv[], bool test) {
- struct udev_device *pdev;
- unsigned long bitmask_ev[NBITS(EV_MAX)];
- unsigned long bitmask_abs[NBITS(ABS_MAX)];
- unsigned long bitmask_key[NBITS(KEY_MAX)];
- unsigned long bitmask_rel[NBITS(REL_MAX)];
- unsigned long bitmask_props[NBITS(INPUT_PROP_MAX)];
- const char *sysname, *devnode;
- bool is_pointer;
- bool is_key;
-
- assert(dev);
-
- /* walk up the parental chain until we find the real input device; the
- * argument is very likely a subdevice of this, like eventN */
- pdev = dev;
- while (pdev != NULL && udev_device_get_sysattr_value(pdev, "capabilities/ev") == NULL)
- pdev = udev_device_get_parent_with_subsystem_devtype(pdev, "input", NULL);
-
- if (pdev) {
- /* Use this as a flag that input devices were detected, so that this
- * program doesn't need to be called more than once per device */
- udev_builtin_add_property(dev, test, "ID_INPUT", "1");
- get_cap_mask(dev, pdev, "capabilities/ev", bitmask_ev, sizeof(bitmask_ev), test);
- get_cap_mask(dev, pdev, "capabilities/abs", bitmask_abs, sizeof(bitmask_abs), test);
- get_cap_mask(dev, pdev, "capabilities/rel", bitmask_rel, sizeof(bitmask_rel), test);
- get_cap_mask(dev, pdev, "capabilities/key", bitmask_key, sizeof(bitmask_key), test);
- get_cap_mask(dev, pdev, "properties", bitmask_props, sizeof(bitmask_props), test);
- is_pointer = test_pointers(dev, bitmask_ev, bitmask_abs,
- bitmask_key, bitmask_rel,
- bitmask_props, test);
- is_key = test_key(dev, bitmask_ev, bitmask_key, test);
- /* Some evdev nodes have only a scrollwheel */
- if (!is_pointer && !is_key && test_bit(EV_REL, bitmask_ev) &&
- (test_bit(REL_WHEEL, bitmask_rel) || test_bit(REL_HWHEEL, bitmask_rel)))
- udev_builtin_add_property(dev, test, "ID_INPUT_KEY", "1");
- }
-
- devnode = udev_device_get_devnode(dev);
- sysname = udev_device_get_sysname(dev);
- if (devnode && sysname && startswith(sysname, "event"))
- extract_info(dev, devnode, test);
-
- return EXIT_SUCCESS;
-}
-
-const struct udev_builtin udev_builtin_input_id = {
- .name = "input_id",
- .cmd = builtin_input_id,
- .help = "Input device properties",
-};
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