+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
/*
- * compose persistent device path
+ * 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
* 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 <stdarg.h>
-#include <unistd.h>
#include <string.h>
-#include <errno.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 LONG(x) ((x)/BITS_PER_LONG)
#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+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
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)
-{
+ bool test) {
+ const char *v;
char text[4096];
unsigned i;
char* word;
unsigned long val;
- snprintf(text, sizeof(text), "%s", udev_device_get_sysattr_value(pdev, attr));
- log_debug("%s raw kernel attribute: %s\n", attr, text);
+ v = udev_device_get_sysattr_value(pdev, attr);
+ if (!v)
+ v = "";
+
+ xsprintf(text, "%s", v);
+ log_debug("%s raw kernel attribute: %s", attr, text);
- memset (bitmask, 0, bitmask_size);
+ 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\n", attr, val);
+ log_debug("ignoring %s block %lX which is larger than maximum size", attr, val);
*word = '\0';
++i;
}
if (i < bitmask_size / sizeof(unsigned long))
bitmask[i] = val;
else
- log_debug("ignoring %s block %lX which is larger than maximum size\n", attr, val);
+ 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 */
- snprintf(text, sizeof(text), " bit %%4u: %%0%zilX\n", 2 * sizeof(unsigned long));
- log_debug("%s decoded bit map:\n", attr);
+ 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)
+ for (i = 0; i < val; ++i) {
+ DISABLE_WARNING_FORMAT_NONLITERAL;
log_debug(text, i * BITS_PER_LONG, bitmask[i]);
+ REENABLE_WARNING;
+ }
}
}
-#pragma GCC diagnostic pop
/* pointer devices */
-static void 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,
- bool test)
-{
- int is_mouse = 0;
- int is_touchpad = 0;
-
- if (!test_bit (EV_KEY, bitmask_ev)) {
- if (test_bit (EV_ABS, bitmask_ev) &&
- test_bit (ABS_X, bitmask_abs) &&
- test_bit (ABS_Y, bitmask_abs) &&
- test_bit (ABS_Z, bitmask_abs))
- udev_builtin_add_property(dev, test, "ID_INPUT_ACCELEROMETER", "1");
- return;
+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;
}
- if (test_bit (EV_ABS, bitmask_ev) &&
- test_bit (ABS_X, bitmask_abs) && test_bit (ABS_Y, bitmask_abs)) {
- if (test_bit (BTN_STYLUS, bitmask_key) || test_bit (BTN_TOOL_PEN, bitmask_key))
- udev_builtin_add_property(dev, test, "ID_INPUT_TABLET", "1");
- else if (test_bit (BTN_TOOL_FINGER, bitmask_key) && !test_bit (BTN_TOOL_PEN, bitmask_key))
- is_touchpad = 1;
- else if (test_bit (BTN_TRIGGER, bitmask_key) ||
- test_bit (BTN_A, bitmask_key) ||
- test_bit (BTN_1, bitmask_key))
- udev_builtin_add_property(dev, test, "ID_INPUT_JOYSTICK", "1");
- else if (test_bit (BTN_MOUSE, bitmask_key))
+ 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 = 1;
- else if (test_bit (BTN_TOUCH, bitmask_key))
- udev_builtin_add_property(dev, test, "ID_INPUT_TOUCHSCREEN", "1");
+ 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 && (is_direct || has_touch))
+ is_touchscreen = true;
- if (test_bit (EV_REL, bitmask_ev) &&
- test_bit (REL_X, bitmask_rel) && test_bit (REL_Y, bitmask_rel) &&
- test_bit (BTN_MOUSE, bitmask_key))
- is_mouse = 1;
+ 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 void test_key (struct udev_device *dev,
- const unsigned long* bitmask_ev,
- const unsigned long* bitmask_key,
- bool test)
-{
+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\n");
- return;
+ 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\n", (unsigned long)i*BITS_PER_LONG, found > 0);
+ 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\n", i);
+ if (test_bit(i, bitmask_key)) {
+ log_debug("test_key: Found key %x in high block", i);
found = 1;
break;
}
}
}
- if (found > 0)
+ 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)
+ 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)
-{
+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 */
while (pdev != NULL && udev_device_get_sysattr_value(pdev, "capabilities/ev") == NULL)
pdev = udev_device_get_parent_with_subsystem_devtype(pdev, "input", NULL);
- /* not an "input" class device */
- if (pdev == NULL)
- return EXIT_SUCCESS;
-
- /* 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);
- test_pointers(dev, bitmask_ev, bitmask_abs, bitmask_key, bitmask_rel, test);
- test_key(dev, bitmask_ev, bitmask_key, test);
+ 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",
+ .help = "Input device properties",
};
projects / thirdparty / systemd.git / blobdiff