evdev 2.2.1

Remember whether ABS_X or ABS_Y were reported before the SYN event and only
update the old_vals[0, 1] if we got data for them.
Touchpads that reported pressure data before x/y would otherwise update
old_x/y with bogus values, leading to jumps when the first x/y coordinates
were actually reported.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit d9809d7edd)

.cvsignore

@@ -1,19 +0,0 @@
-Makefile
-Makefile.in
-*.la
-*.lo
-aclocal.m4
-autom4te.cache
-config.guess
-config.h
-config.h.in
-config.log
-config.status
-config.sub
-configure
-depcomp
-install-sh
-libtool
-ltmain.sh
-missing
-stamp-h1

.gitignore

@@ -22,6 +22,7 @@ missing
 *.lo
 *.la
 stamp-h1
-*.bz2
+xf86-input-evdev-*.tar.*
-*.gz
 *.pc
+*~
+tags

Makefile.am

@@ -19,19 +19,26 @@
 #  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 AUTOMAKE_OPTIONS = foreign
-SUBDIRS = src man include
+
+# Ensure headers are installed below $(prefix) for distcheck
+DISTCHECK_CONFIGURE_FLAGS = --with-sdkdir='$${includedir}/xorg'
+
+if BUILD_TEST
+test_dir=test
+endif
+
+SUBDIRS = src man include $(test_dir)
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = xorg-evdev.pc
 
-EXTRA_DIST = ChangeLog autogen.sh
+EXTRA_DIST = ChangeLog
 
 MAINTAINERCLEANFILES=ChangeLog
 
 .PHONY: ChangeLog
 
 ChangeLog:
-	(GIT_DIR=$(top_srcdir)/.git git-log > .changelog.tmp && mv .changelog.tmp ChangeLog; rm -f .changelog.tmp) || \
+	$(CHANGELOG_CMD)
-	(touch ChangeLog; echo 'git directory not found: installing possibly empty changelog.' >&2)
 
 dist-hook: ChangeLog

configure.ac

@@ -22,7 +22,7 @@
 
 AC_PREREQ(2.57)
 AC_INIT([xf86-input-evdev],
-        2.1.2,
+        2.2.1,
         [https://bugs.freedesktop.org/enter_bug.cgi?product=xorg],
         xf86-input-evdev)
 
@@ -32,15 +32,16 @@ AM_INIT_AUTOMAKE([dist-bzip2])
 
 AM_MAINTAINER_MODE
 
-DRIVER_NAME=evdev
+# Require xorg-macros: XORG_CWARNFLAGS, XORG_CHANGELOG
-AC_SUBST([DRIVER_NAME])
+m4_ifndef([XORG_MACROS_VERSION], [AC_FATAL([must install xorg-macros 1.2 or later before running autoconf/autogen])])
-
+XORG_MACROS_VERSION(1.2)
 AM_CONFIG_HEADER([config.h])
 
 # Checks for programs.
 AC_DISABLE_STATIC
 AC_PROG_LIBTOOL
 AC_PROG_CC
+XORG_CWARNFLAGS
 
 AH_TOP([#include "xorg-server.h"])
 
@@ -52,27 +53,48 @@ AC_ARG_WITH(xorg-module-dir,
 inputdir=${moduledir}/input
 AC_SUBST(inputdir)
 
+# Enable building everything in the test/ directory. These are uinput-based
+# devices that resemble random hardware that may or may not look like a mouse,
+# keyboard, etc.
+AC_ARG_ENABLE(testdevices,
+              AC_HELP_STRING([--enable-testdevices], [Build uinput-based test devices]),
+              [BUILD_TEST="yes"],
+              [BUILD_TEST="no"])
+AM_CONDITIONAL([BUILD_TEST], [test "x$BUILD_TEST" = "xyes"])
+
+if test "x$BUILD_TEST" = "xyes"; then
+    AC_CHECK_FUNC([dlopen], [],
+                  AC_CHECK_LIB([dl], [dlopen], DLOPEN_LIBS="-ldl"))
+    AC_SUBST([DLOPEN_LIBS])
+fi
+
 # Checks for extensions
 XORG_DRIVER_CHECK_EXT(XINPUT, inputproto)
 
-# Checks for pkg-config packages
+# Checks for pkg-config packages. We need to be able to override sdkdir
+# to satisfy silly distcheck requirements.
 PKG_CHECK_MODULES(XORG, xorg-server xproto $REQUIRED_MODULES)
-sdkdir=$(pkg-config --variable=sdkdir xorg-server)
+XORG_CFLAGS="$CWARNFLAGS $XORG_CFLAGS"
-AC_SUBST(sdkdir)
+AC_ARG_WITH([sdkdir], [],
-
+    [sdkdir="$withval"],
-CFLAGS="$CFLAGS $XORG_CFLAGS "' -I$(top_srcdir)/src'
+    [sdkdir=`$PKG_CONFIG --variable=sdkdir xorg-server`])
-AC_SUBST([CFLAGS])
+AC_SUBST([sdkdir])
 
 # Checks for libraries.
 
 # Checks for header files.
 AC_HEADER_STDC
 
+DRIVER_NAME=evdev
+AC_SUBST([DRIVER_NAME])
+
 XORG_MANPAGE_SECTIONS
 XORG_RELEASE_VERSION
+XORG_CHANGELOG
 
 AC_OUTPUT([Makefile
            src/Makefile
            man/Makefile
            include/Makefile
+           test/Makefile
            xorg-evdev.pc])

man/.cvsignore

@@ -1,2 +0,0 @@
-Makefile
-Makefile.in

man/evdev.man

@@ -44,22 +44,6 @@ The following driver
 .B Options
 are supported:
 .TP 7
-.BI "Option \*qDevice\*q \*q" string \*q
-Specifies the device through which the device can be accessed.  This will 
-generally be of the form \*q/dev/input/eventX\*q, where X is some integer.
-The mapping from device node to hardware is system-dependent.
-.TP 7
-.BI "Option \*qEmulate3Buttons\*q \*q" boolean \*q
-Enable/disable the emulation of the third (middle) mouse button for mice
-which only have two physical buttons.  The third button is emulated by
-pressing both buttons simultaneously.  Default: on, until a middle mouse
-button event is registered. Property: "Evdev Middle Button Emulation".
-.TP 7
-.BI "Option \*qEmulate3Timeout\*q \*q" integer \*q
-Sets the timeout (in milliseconds) that the driver waits before deciding
-if two buttons where pressed "simultaneously" when 3 button emulation is
-enabled.  Default: 50. Property: "Evdev Middle Button Timeout".
-.TP 7
 .BI "Option \*qButtonMapping\*q \*q" string \*q
 Sets the button mapping for this device. The mapping is a space-separated list
 of button mappings that correspond in order to the physical buttons on the
@@ -70,6 +54,11 @@ For example, a left-handed mouse with deactivated scroll-wheel would use a
 mapping of "3 2 1 0 0". Invalid mappings are ignored and the default mapping
 is used. Buttons not specified in the user's mapping use the default mapping.
 .TP 7
+.BI "Option \*qDevice\*q \*q" string \*q
+Specifies the device through which the device can be accessed.  This will 
+generally be of the form \*q/dev/input/eventX\*q, where X is some integer.
+The mapping from device node to hardware is system-dependent.
+.TP 7
 .BI "Option \*qDragLockButtons\*q \*q" "L1 B2 L3 B4" \*q
 Sets \*qdrag lock buttons\*q that simulate holding a button down, so
 that low dexterity people do not have to hold a button down at the
@@ -83,6 +72,17 @@ Sets a \*qmaster drag lock button\*q that acts as a \*qMeta Key\*q
 indicating that the next button pressed is to be
 \*qdrag locked\*q. Property: "Evdev Drag Lock Buttons".
 .TP 7
+.TP 7
+.BI "Option \*qEmulate3Buttons\*q \*q" boolean \*q
+Enable/disable the emulation of the third (middle) mouse button for mice
+which only have two physical buttons.  The third button is emulated by
+pressing both buttons simultaneously.  Default: on, until a middle mouse
+button event is registered. Property: "Evdev Middle Button Emulation".
+.TP 7
+.BI "Option \*qEmulate3Timeout\*q \*q" integer \*q
+Sets the timeout (in milliseconds) that the driver waits before deciding
+if two buttons where pressed "simultaneously" when 3 button emulation is
+enabled.  Default: 50. Property: "Evdev Middle Button Timeout".
 .BI "Option \*qEmulateWheel\*q \*q" boolean \*q
 Enable/disable "wheel" emulation.  Wheel emulation means emulating button
 press/release events when the mouse is moved while a specific real button
@@ -96,7 +96,7 @@ more buttons but no wheel.  See the description of the
 .BR XAxisMapping ,
 and
 .B YAxisMapping
-options below.  Default: off. Property "Evdev Wheel Emulation".
+options.  Default: off. Property "Evdev Wheel Emulation".
 .TP 7
 .BI "Option \*qEmulateWheelButton\*q \*q" integer \*q
 Specifies which button must be held down to enable wheel emulation mode.
@@ -120,6 +120,25 @@ must be pressed before wheel emulation is started. If the
 is released before this timeout, the original button press/release event
 is sent.  Default: 200. Property: "Evdev Wheel Emulation Timeout".
 .TP 7
+.BI "Option \*qGrabDevice\*q \*q" boolean \*q
+Force a grab on the event device. Doing so will ensure that no other driver
+can initialise the same device and it will also stop the device from sending
+events to /dev/kbd or /dev/input/mice. Events from this device will not be
+sent to virtual devices (e.g. rfkill or the Macintosh mouse button emulation).
+Default: disabled.
+.TP 7
+.BI "Option \*qInvertX\*q \*q" Bool \*q
+.TP 7
+.BI "Option \*qInvertY\*q \*q" Bool \*q
+Invert the given axis. Default: off. Property: "Evdev Axis Inversion".
+.TP 7
+.BI "Option \*qReopenAttempts\*q \*q" integer \*q
+Number of reopen attempts after a read error occurs on the device (e.g. after
+waking up from suspend). In between each attempt is a 100ms wait. Default: 10.
+.TP 7
+.BI "Option \*qSwapAxes\*q \*q" Bool \*q
+Swap x/y axes. Default: off. Property: "Evdev Axes Swap".
+.TP 7
 .BI "Option \*qXAxisMapping\*q \*q" "N1 N2" \*q
 Specifies which buttons are mapped to motion in the X direction in wheel
 emulation mode.  Button number
@@ -137,31 +156,28 @@ is mapped to the negative Y axis motion and button number
 .I N2
 is mapped to the positive Y axis motion.  Default: "4 5". Property:
 "Evdev Wheel Emulation Axes".
-.TP 7
-.BI "Option \*qReopenAttempts\*q \*q" integer \*q
-Number of reopen attempts after a read error occurs on the device (e.g. after
-waking up from suspend). In between each attempt is a 100ms wait. Default: 10.
-.TP 7
-.BI "Option \*qInvertX\*q \*q" Bool \*q
-.TP 7
-.BI "Option \*qInvertY\*q \*q" Bool \*q
-Invert the given axis. Default: off. Property: "Evdev Axis Inversion".
-.TP 7
-.BI "Option \*qSwapAxes\*q \*q" Bool \*q
-Swap x/y axes. Default: off. Property: "Evdev Axes Swap".
-.TP 7
-.BI "Option \*qGrabDevice\*q \*q" boolean \*q
-Force a grab on the event device. Doing so will ensure that no other driver
-can initialise the same device and it will also stop the device from sending
-events to /dev/kbd or /dev/input/mice. Events from this device will not be
-sent to virtual devices (e.g. rfkill or the Macintosh mouse button emulation).
-Default disabled.
 
 .SH SUPPORTED PROPERTIES
 The following properties are provided by the
 .B evdev
 driver.
 .TP 7
+.BI "Evdev Axis Calibration"
+4 32-bit values, order min-x, max-x, min-y, max-y or 0 values to disable
+run-time axis calibration. This feature is required for devices that need to
+scale to a different coordinate system than originally reported to the X
+server, such as touchscreens that require run-time calibration.
+.TP 7
+.BI "Evdev Axis Inversion"
+2 boolean values (8 bit, 0 or 1), order X, Y. 1 inverts the axis.
+.TP 7
+.BI "Evdev Axis Swap"
+1 boolean value (8 bit, 0 or 1). 1 swaps x/y axes.
+.TP 7
+.BI "Evdev Drag Lock Buttons"
+8-bit. Either 1 value or pairs of values. Value range 0-32, 0 disables a
+value.
+.TP 7
 .BI "Evdev Middle Button Emulation"
 1 boolean value (8 bit, 0 or 1).
 .TP 7
@@ -174,29 +190,14 @@ driver.
 .BI "Evdev Wheel Emulation Axes"
 4 8-bit values, order X up, X down, Y up, Y down. 0 disables a value.
 .TP 7
+.BI "Evdev Wheel Emulation Button"
+1 8-bit value, allowed range 0-32, 0 disables the button.
+.TP 7
 .BI "Evdev Wheel Emulation Inertia"
 1 16-bit positive value.
 .TP 7
 .BI "Evdev Wheel Emulation Timeout"
 1 16-bit positive value.
-.TP 7
-.BI "Evdev Wheel Emulation Button"
-1 8-bit value, allowed range 0-32, 0 disables the button.
-.TP 7
-.BI "Evdev Drag Lock Buttons"
-8-bit. Either 1 value or pairs of values. Value range 0-32, 0 disables a
-value.
-.TP 7
-.BI "Evdev Axis Inversion"
-2 boolean values (8 bit, 0 or 1), order X, Y. 1 inverts the axis.
-.BI "Evdev Axis Calibration"
-4 32-bit values, order min-x, max-x, min-y, max-y or 0 values to disable
-run-time axis calibration. This feature is required for devices that need to
-scale to a different coordinate system than originally reported to the X
-server, such as touchscreens that require run-time calibration.
-.TP 7
-.BI "Evdev Axis Swap"
-1 boolean values (8 bit, 0 or 1). 1 swaps x/y axes.
 
 .SH AUTHORS
 Kristian Høgsberg.

src/.cvsignore

@@ -1,6 +0,0 @@
-.deps
-.libs
-Makefile
-Makefile.in
-*.la
-*.lo

src/Makefile.am

@@ -24,6 +24,8 @@
 # -avoid-version prevents gratuitous .0.0.0 version numbers on the end
 # _ladir passes a dummy rpath to libtool so the thing will actually link
 # TODO: -nostdlib/-Bstatic/-lgcc platform magic, not installing the .a, etc.
+AM_CFLAGS = $(XORG_CFLAGS)
+
 @DRIVER_NAME@_drv_la_LTLIBRARIES = @DRIVER_NAME@_drv.la
 @DRIVER_NAME@_drv_la_LDFLAGS = -module -avoid-version
 @DRIVER_NAME@_drv_ladir = @inputdir@

src/draglock.c

@@ -217,7 +217,7 @@ EvdevDragLockFilterEvent(InputInfoPtr pInfo, unsigned int button, int value)
  * for the pair. 0 disables a pair.
  * i.e. to set bt 3 to draglock button 1, supply 0,0,1
  */
-int
+static int
 EvdevDragLockSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
                          BOOL checkonly)
 {

src/emuMB.c

@@ -352,7 +352,7 @@ EvdevMBEmuEnable(InputInfoPtr pInfo, BOOL enable)
 
 
 #ifdef HAVE_PROPERTIES
-int
+static int
 EvdevMBEmuSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
                       BOOL checkonly)
 {

src/emuWheel.c

@@ -311,7 +311,7 @@ EvdevWheelEmuPreInit(InputInfoPtr pInfo)
 }
 
 #ifdef HAVE_PROPERTIES
-int
+static int
 EvdevWheelEmuSetProperty(DeviceIntPtr dev, Atom atom, XIPropertyValuePtr val,
                          BOOL checkonly)
 {

src/evdev.h

@@ -35,10 +35,7 @@
 
 #include <xf86Xinput.h>
 #include <xf86_OSproc.h>
-
-#ifdef XKB
 #include <xkbstr.h>
-#endif
 
 #ifndef EV_CNT /* linux 2.4 kernels and earlier lack _CNT defines */
 #define EV_CNT (EV_MAX+1)
@@ -62,6 +59,22 @@
 #define HAVE_PROPERTIES 1
 #endif
 
+#ifndef MAX_VALUATORS
+#define MAX_VALUATORS 36
+#endif
+
+
+#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 5
+typedef struct {
+    char *rules;
+    char *model;
+    char *layout;
+    char *variant;
+    char *options;
+} XkbRMLVOSet;
+#endif
+
+
 #define LONG_BITS (sizeof(long) * 8)
 
 /* Number of longs needed to hold the given number of bits */
@@ -77,9 +90,12 @@ typedef struct {
 typedef struct {
     const char *device;
     int grabDevice;         /* grab the event device? */
-    int screen;
+
-    int min_x, min_y, max_x, max_y;
+    int num_vals;           /* number of valuators */
-    int abs_x, abs_y, old_x, old_y;
+    int axis_map[max(ABS_CNT, REL_CNT)]; /* Map evdev <axis> to index */
+    int vals[MAX_VALUATORS];
+    int old_vals[MAX_VALUATORS]; /* Translate absolute inputs to relative */
+
     int flags;
     int tool;
     int buttons;            /* number of buttons */
@@ -88,15 +104,11 @@ typedef struct {
     BOOL invert_y;
 
     /* XKB stuff has to be per-device rather than per-driver */
-    int noXkb;
+#if GET_ABI_MAJOR(ABI_XINPUT_VERSION) < 5
-#ifdef XKB
-    char                    *xkb_rules;
-    char                    *xkb_model;
-    char                    *xkb_layout;
-    char                    *xkb_variant;
-    char                    *xkb_options;
     XkbComponentNamesRec    xkbnames;
 #endif
+    XkbRMLVOSet rmlvo;
+
     /* Middle mouse button emulation */
     struct {
         BOOL                enabled;
@@ -138,11 +150,11 @@ typedef struct {
 
     /* Cached info from device. */
     char name[1024];
-    long bitmask[NLONGS(EV_CNT)];
+    unsigned long bitmask[NLONGS(EV_CNT)];
-    long key_bitmask[NLONGS(KEY_CNT)];
+    unsigned long key_bitmask[NLONGS(KEY_CNT)];
-    long rel_bitmask[NLONGS(REL_CNT)];
+    unsigned long rel_bitmask[NLONGS(REL_CNT)];
-    long abs_bitmask[NLONGS(ABS_CNT)];
+    unsigned long abs_bitmask[NLONGS(ABS_CNT)];
-    long led_bitmask[NLONGS(LED_CNT)];
+    unsigned long led_bitmask[NLONGS(LED_CNT)];
     struct input_absinfo absinfo[ABS_CNT];
 
     /* minor/major number */

test/Makefile.am

@@ -0,0 +1,39 @@
+#  Copyright 2008 Red Hat, Inc.
+#
+#  Permission is hereby granted, free of charge, to any person obtaining a
+#  copy of this software and associated documentation files (the "Software"),
+#  to deal in the Software without restriction, including without limitation
+#  on the rights to use, copy, modify, merge, publish, distribute, sub
+#  license, and/or sell copies of the Software, and to permit persons to whom
+#  the Software is furnished to do so, subject to the following conditions:
+#
+#  The above copyright notice and this permission notice (including the next
+#  paragraph) shall be included in all copies or substantial portions of the
+#  Software.
+#
+#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#  FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
+#  THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+#  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+#  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+AM_CFLAGS = $(XORG_CFLAGS)
+
+noinst_PROGRAMS=fakedev btn0 absrel abs dummy
+
+fakedev_SOURCES=fakedev.c fakedev.h
+fakedev_LDFLAGS=$(DLOPEN_LIBS) -rdynamic
+
+LFLAGS=-shared -fPIC
+
+btn0_SOURCES=btn0.c
+btn0_LDFLAGS=$(LFLAGS)
+
+absrel_SOURCES=absrel.c
+absrel_LDFLAGS=$(LFLAGS)
+
+abs_SOURCES=abs.c
+abs_LDFLAGS=$(LFLAGS)
+
+dummy_SOURCES=dummy.c
+dummy_LDFLAGS=$(LFLAGS)

test/abs.c

@@ -0,0 +1,84 @@
+/*
+ * Copyright © 2008 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 Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+
+/* creates a device with ABS_X, ABS_Y, BTN_LEFT, BTN_MIDDLE, BTN_RIGHT. */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+
+#include "fakedev.h"
+
+int abs_setup(struct uinput_user_dev* dev, int fd)
+{
+    if (ioctl(fd, UI_SET_EVBIT, EV_ABS) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_SYN) == -1) goto error;
+
+    /* buttons */
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_LEFT) == -1)   goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_MIDDLE) == -1) goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_RIGHT) == -1)  goto error;
+
+    /* axes */
+    if (ioctl(fd, UI_SET_ABSBIT, ABS_X) == -1) goto error;
+    if (ioctl(fd, UI_SET_ABSBIT, ABS_Y) == -1) goto error;
+
+
+    dev->absmin[ABS_X] = 0;
+    dev->absmax[ABS_X] = 120;
+
+    dev->absmin[ABS_Y] = 0;
+    dev->absmax[ABS_Y] = 120;
+
+    return 0;
+
+error:
+    perror("ioctl failed.");
+    return -1;
+}
+
+int abs_run(int fd)
+{
+    absmove(fd, 100, 100);
+    sleep(1);
+    absmove(fd, 120, 120);
+    sleep(1);
+    return 0;
+}
+
+struct test_device abs_dev = {
+    .name  = "Abs test device",
+    .setup = abs_setup,
+    .run   = abs_run,
+};
+
+
+struct test_device* get_device()
+{
+    return &abs_dev;
+}

test/absrel.c

@@ -0,0 +1,91 @@
+/*
+ * Copyright © 2008 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 Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+
+/* creates a device with ABS_X, ABS_Y, REL_X, REL_Y, BTN_LEFT, BTN_MIDDLE,
+   BTN_RIGHT. */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+
+#include "fakedev.h"
+
+int absrel_setup(struct uinput_user_dev* dev, int fd)
+{
+    if (ioctl(fd, UI_SET_EVBIT, EV_REL) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_ABS) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_SYN) == -1) goto error;
+
+    /* buttons */
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_LEFT) == -1)   goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_MIDDLE) == -1) goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_RIGHT) == -1)  goto error;
+
+    /* axes */
+    if (ioctl(fd, UI_SET_RELBIT, REL_X) == -1) goto error;
+    if (ioctl(fd, UI_SET_RELBIT, REL_Y) == -1) goto error;
+
+    if (ioctl(fd, UI_SET_ABSBIT, ABS_X) == -1) goto error;
+    if (ioctl(fd, UI_SET_ABSBIT, ABS_Y) == -1) goto error;
+
+
+    dev->absmin[ABS_X] = 0;
+    dev->absmax[ABS_X] = 1000;
+
+    dev->absmin[ABS_Y] = 0;
+    dev->absmax[ABS_Y] = 1000;
+
+    return 0;
+
+error:
+    perror("ioctl failed.");
+    return -1;
+}
+
+int absrel_run(int fd)
+{
+    absmove(fd, 100, 100);
+    sleep(1);
+    absmove(fd, 120, 120);
+    sleep(1);
+    move(fd, 10, 10);
+    return 0;
+}
+
+struct test_device absrel_dev = {
+    .name  = "Abs/Rel test device",
+    .setup = absrel_setup,
+    .run   = absrel_run,
+};
+
+
+struct test_device* get_device()
+{
+    return &absrel_dev;
+}
+

test/btn0.c

@@ -0,0 +1,87 @@
+/*
+ * Copyright © 2008 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 Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+/* Creates a device that has REL_X REL_Y BTN_0 BTN_1 BTN_2
+ *
+ * Moves the device around in a 10px square and clicks after each completed
+ * circle.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+
+#include "fakedev.h"
+
+int btn0_setup(struct uinput_user_dev *dev, int fd)
+{
+    if (ioctl(fd, UI_SET_EVBIT, EV_KEY) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_REL) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_SYN) == -1) goto error;
+
+    /* buttons */
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_0) == -1) goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_1) == -1) goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_2) == -1) goto error;
+
+    /* axes */
+    if (ioctl(fd, UI_SET_RELBIT, REL_X) == -1) goto error;
+    if (ioctl(fd, UI_SET_RELBIT, REL_Y) == -1) goto error;
+
+    return 0;
+error:
+    perror("ioctl failed.");
+    return -1;
+}
+
+int btn0_run(int fd)
+{
+    move(fd, -10, 0);
+    usleep(1000);
+    move(fd, 0, -10);
+    usleep(1000);
+    move(fd, 10, 0);
+    usleep(1000);
+    move(fd, 0, 10);
+    usleep(1000);
+    click(fd, BTN_0, 1);
+    usleep(1000);
+    click(fd, BTN_0, 0);
+    return 0;
+}
+
+struct test_device btn0_dev = {
+    .name  = "BTN_0 test device",
+    .setup = btn0_setup,
+    .run   = btn0_run,
+};
+
+
+struct test_device* get_device()
+{
+    return &btn0_dev;
+}

test/dummy.c

@@ -0,0 +1,77 @@
+/*
+ * Copyright © 2008 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 Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+/* dummy device, looks like a mouse but doesn't do anything.
+ * Good for filling up the device list.
+ *
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+
+#include "fakedev.h"
+
+int dummy_setup(struct uinput_user_dev *dev, int fd)
+{
+    if (ioctl(fd, UI_SET_EVBIT, EV_KEY) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_REL) == -1) goto error;
+    if (ioctl(fd, UI_SET_EVBIT, EV_SYN) == -1) goto error;
+
+    /* buttons */
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_LEFT) == -1) goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_MIDDLE) == -1) goto error;
+    if (ioctl(fd, UI_SET_KEYBIT, BTN_RIGHT) == -1) goto error;
+
+    /* axes */
+    if (ioctl(fd, UI_SET_RELBIT, REL_X) == -1) goto error;
+    if (ioctl(fd, UI_SET_RELBIT, REL_Y) == -1) goto error;
+
+    return 0;
+error:
+    perror("ioctl failed.");
+    return -1;
+}
+
+int dummy_run(int fd)
+{
+    usleep(1000);
+    return 0;
+}
+
+struct test_device dummy_dev = {
+    .name  = "dummy_ test device",
+    .setup = dummy_setup,
+    .run   = dummy_run,
+};
+
+
+struct test_device* get_device()
+{
+    return &dummy_dev;
+}
+

test/fakedev.c

@@ -0,0 +1,199 @@
+/*
+ * Copyright © 2008 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 Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <unistd.h>
+#include <linux/input.h>
+#include <linux/uinput.h>
+#include <dlfcn.h>
+
+#include "fakedev.h"
+
+/* "public interfaces" */
+
+void send_event(int fd, int type, int code, int value)
+{
+    struct input_event event;
+
+    event.type  = type;
+    event.code  = code;
+    event.value = value;
+    gettimeofday(&event.time, NULL);
+
+    if (write(fd, &event, sizeof(event)) < sizeof(event))
+        perror("Send event failed.");
+}
+
+
+void move(int fd, int x, int y)
+{
+    if (!x && !y)
+        return;
+
+    send_event(fd, EV_REL, REL_X, x);
+    send_event(fd, EV_REL, REL_Y, y);
+    send_event(fd, EV_SYN, SYN_REPORT, 0);
+}
+
+void absmove(int fd, int x, int y)
+{
+    send_event(fd, EV_ABS, ABS_X, x);
+    send_event(fd, EV_ABS, ABS_Y, y);
+    send_event(fd, EV_SYN, SYN_REPORT, 0);
+}
+
+void click(int fd, int btn, int down)
+{
+    send_event(fd, EV_KEY, btn, down);
+    send_event(fd, EV_SYN, SYN_REPORT, 0);
+}
+
+
+
+/* end public interfaces */
+
+static int fd   = -1;
+static int stop = 0;
+
+static void sighandler(int signum)
+{
+    printf("Stopping.\n");
+    stop = 1;
+}
+
+static void init_signal(void)
+{
+    struct sigaction action;
+    sigset_t mask;
+
+    sigfillset(&mask);
+
+    action.sa_handler = sighandler;
+    action.sa_mask    = mask;
+    action.sa_flags   = 0;
+
+    sigaction(SIGTERM, &action, NULL);
+    sigaction(SIGINT, &action, NULL);
+    sigprocmask(SIG_UNBLOCK, &mask, 0);
+}
+
+
+static int init_uinput(struct test_device* test_dev)
+{
+    struct uinput_user_dev dev;
+
+    fd = open("/dev/input/uinput", O_RDWR);
+    if (fd < 0)
+        goto error;
+
+    memset(&dev, 0, sizeof(dev));
+    strcpy(dev.name, test_dev->name);
+    dev.id.bustype = 0;
+    dev.id.vendor  = 0x1F;
+    dev.id.product = 0x1F;
+    dev.id.version = 0;
+
+
+    test_dev->setup(&dev, fd);
+
+    if (write(fd, &dev, sizeof(dev)) < sizeof(dev))
+        goto error;
+    if (ioctl(fd, UI_DEV_CREATE, NULL) == -1) goto error;
+
+    return 0;
+
+error:
+    fprintf(stderr, "Error: %s\n", strerror(errno));
+
+    if (fd != -1)
+        close(fd);
+
+    return -1;
+}
+
+static void cleanup_uinput(void)
+{
+    if (fd == -1)
+        return;
+
+    ioctl(fd, UI_DEV_DESTROY, NULL);
+    close(fd);
+    fd = -1;
+}
+
+
+int main (int argc, char **argv)
+{
+    struct test_device *dev;
+    void *dlhandle = NULL;
+    struct test_device* (*get_device)(void);
+
+    if (argc <= 1)
+    {
+        fprintf(stderr, "Usage: %s test_dev\n", argv[0]);
+        return -1;
+    }
+
+    printf("Loading %s.\n", argv[1]);
+
+    dlhandle = dlopen(argv[1], RTLD_NOW | RTLD_GLOBAL);
+    if (!dlhandle)
+    {
+        fprintf(stderr, "Error: %s\n", dlerror());
+        return -1;
+    }
+
+    *(void**)(&get_device) = dlsym(dlhandle, "get_device");
+    if (!get_device)
+    {
+        fprintf(stderr, "Error getting the symbol: %s.\n", dlerror());
+        return -1;
+    }
+
+    dev = (*get_device)();
+
+    if (init_uinput(dev) < 0) {
+        fprintf(stderr, "Failed to initialize /dev/uinput. Exiting.\n");
+        return -1;
+    }
+
+    init_signal();
+
+    printf("Device created. Press CTRL+C to terminate.\n");
+    while (!stop) {
+        if (dev->run(fd))
+            break;
+    }
+
+    cleanup_uinput();
+
+    return 0;
+}
+

test/fakedev.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright © 2008 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 Red Hat
+ * not be used in advertising or publicity pertaining to distribution
+ * of the software without specific, written prior permission.  Red
+ * Hat makes no representations about the suitability of this software
+ * for any purpose.  It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
+ * NO EVENT SHALL THE AUTHORS 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.
+ *
+ * Authors:
+ *	Peter Hutterer (peter.hutterer@redhat.com)
+ */
+
+#ifndef _EVDEV_TEST_H
+#define _EVDEV_TEST_H
+#include <linux/uinput.h>
+
+struct test_device {
+    char *name; /* device name */
+    /**
+     * Called to setup the device. Call ioctls to set your EVBITs, KEYBITs,
+     * etc. here. Return 0 on success or non-zero to exit.
+     */
+    int (*setup)(struct uinput_user_dev* dev, int fd);
+
+    /**
+     * Called during each run of the main loop. Generate events by calling
+     * move(), click(), etc.
+     * Return 0 on success, or non-zero to stop the main loop.
+     */
+    int (*run)(int fd);
+};
+
+extern void move (int fd, int x, int y);
+extern void absmove (int fd, int x, int y);
+extern void click (int fd, int btn, int down);
+
+#endif