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* Copyright © 2008 Red Hat, Inc.
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of Red Hat
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* not be used in advertising or publicity pertaining to distribution
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* of the software without specific, written prior permission. Red
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* Hat makes no representations about the suitability of this software
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* for any purpose. It is provided "as is" without express or implied
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* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
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* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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* Peter Hutterer (peter.hutterer@redhat.com)
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#include <linux/input.h>
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#include <linux/uinput.h>
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/* "public interfaces" */
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void send_event(int fd, int type, int code, int value)
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struct input_event event;
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gettimeofday(&event.time, NULL);
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if (write(fd, &event, sizeof(event)) < sizeof(event))
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perror("Send event failed.");
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void move(int fd, int x, int y)
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send_event(fd, EV_REL, REL_X, x);
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send_event(fd, EV_REL, REL_Y, y);
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send_event(fd, EV_SYN, SYN_REPORT, 0);
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void absmove(int fd, int x, int y)
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send_event(fd, EV_ABS, ABS_X, x);
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send_event(fd, EV_ABS, ABS_Y, y);
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send_event(fd, EV_SYN, SYN_REPORT, 0);
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void click(int fd, int btn, int down)
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send_event(fd, EV_KEY, btn, down);
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send_event(fd, EV_SYN, SYN_REPORT, 0);
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/* end public interfaces */
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static void sighandler(int signum)
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printf("Stopping.\n");
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static void init_signal(void)
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struct sigaction action;
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action.sa_handler = sighandler;
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action.sa_mask = mask;
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sigaction(SIGTERM, &action, NULL);
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sigaction(SIGINT, &action, NULL);
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sigprocmask(SIG_UNBLOCK, &mask, 0);
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static int init_uinput(struct test_device* test_dev)
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struct uinput_user_dev dev;
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fd = open("/dev/input/uinput", O_RDWR);
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memset(&dev, 0, sizeof(dev));
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strcpy(dev.name, test_dev->name);
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dev.id.vendor = 0x1F;
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dev.id.product = 0x1F;
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test_dev->setup(&dev, fd);
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if (write(fd, &dev, sizeof(dev)) < sizeof(dev))
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if (ioctl(fd, UI_DEV_CREATE, NULL) == -1) goto error;
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fprintf(stderr, "Error: %s\n", strerror(errno));
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static void cleanup_uinput(void)
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ioctl(fd, UI_DEV_DESTROY, NULL);
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int main (int argc, char **argv)
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struct test_device *dev;
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void *dlhandle = NULL;
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struct test_device* (*get_device)(void);
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fprintf(stderr, "Usage: %s test_dev\n", argv[0]);
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printf("Loading %s.\n", argv[1]);
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dlhandle = dlopen(argv[1], RTLD_NOW | RTLD_GLOBAL);
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fprintf(stderr, "Error: %s\n", dlerror());
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*(void**)(&get_device) = dlsym(dlhandle, "get_device");
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fprintf(stderr, "Error getting the symbol: %s.\n", dlerror());
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dev = (*get_device)();
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if (init_uinput(dev) < 0) {
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fprintf(stderr, "Failed to initialize /dev/uinput. Exiting.\n");
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printf("Device created. Press CTRL+C to terminate.\n");
added
removed
test/fakedev.c
