^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) =============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) uinput module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) =============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) Introduction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) ============
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) uinput is a kernel module that makes it possible to emulate input devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) from userspace. By writing to /dev/uinput (or /dev/input/uinput) device, a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) process can create a virtual input device with specific capabilities. Once
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) this virtual device is created, the process can send events through it,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) that will be delivered to userspace and in-kernel consumers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) Interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) =========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) ::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) linux/uinput.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) The uinput header defines ioctls to create, set up, and destroy virtual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) libevdev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) libevdev is a wrapper library for evdev devices that provides interfaces to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) create uinput devices and send events. libevdev is less error-prone than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) accessing uinput directly, and should be considered for new software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) For examples and more information about libevdev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) https://www.freedesktop.org/software/libevdev/doc/latest/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) Examples
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) ========
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) Keyboard events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) ---------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) This first example shows how to create a new virtual device, and how to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) send a key event. All default imports and error handlers were removed for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) the sake of simplicity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) .. code-block:: c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/uinput.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) void emit(int fd, int type, int code, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct input_event ie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) ie.type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) ie.code = code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ie.value = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* timestamp values below are ignored */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) ie.time.tv_sec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ie.time.tv_usec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) write(fd, &ie, sizeof(ie));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int main(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) struct uinput_setup usetup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * The ioctls below will enable the device that is about to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * created, to pass key events, in this case the space key.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ioctl(fd, UI_SET_EVBIT, EV_KEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) ioctl(fd, UI_SET_KEYBIT, KEY_SPACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) memset(&usetup, 0, sizeof(usetup));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) usetup.id.bustype = BUS_USB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) usetup.id.vendor = 0x1234; /* sample vendor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) usetup.id.product = 0x5678; /* sample product */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) strcpy(usetup.name, "Example device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ioctl(fd, UI_DEV_SETUP, &usetup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ioctl(fd, UI_DEV_CREATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * On UI_DEV_CREATE the kernel will create the device node for this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * device. We are inserting a pause here so that userspace has time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * to detect, initialize the new device, and can start listening to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * the event, otherwise it will not notice the event we are about
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * to send. This pause is only needed in our example code!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) sleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* Key press, report the event, send key release, and report again */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) emit(fd, EV_KEY, KEY_SPACE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) emit(fd, EV_SYN, SYN_REPORT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) emit(fd, EV_KEY, KEY_SPACE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) emit(fd, EV_SYN, SYN_REPORT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * Give userspace some time to read the events before we destroy the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * device with UI_DEV_DESTROY.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) sleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ioctl(fd, UI_DEV_DESTROY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) Mouse movements
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ---------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) This example shows how to create a virtual device that behaves like a physical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) mouse.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .. code-block:: c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #include <linux/uinput.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* emit function is identical to of the first example */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int main(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct uinput_setup usetup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int i = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) int fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /* enable mouse button left and relative events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) ioctl(fd, UI_SET_EVBIT, EV_KEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) ioctl(fd, UI_SET_KEYBIT, BTN_LEFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ioctl(fd, UI_SET_EVBIT, EV_REL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) ioctl(fd, UI_SET_RELBIT, REL_X);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) ioctl(fd, UI_SET_RELBIT, REL_Y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) memset(&usetup, 0, sizeof(usetup));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) usetup.id.bustype = BUS_USB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) usetup.id.vendor = 0x1234; /* sample vendor */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) usetup.id.product = 0x5678; /* sample product */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) strcpy(usetup.name, "Example device");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) ioctl(fd, UI_DEV_SETUP, &usetup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) ioctl(fd, UI_DEV_CREATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * On UI_DEV_CREATE the kernel will create the device node for this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * device. We are inserting a pause here so that userspace has time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * to detect, initialize the new device, and can start listening to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * the event, otherwise it will not notice the event we are about
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * to send. This pause is only needed in our example code!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) sleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) /* Move the mouse diagonally, 5 units per axis */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) while (i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) emit(fd, EV_REL, REL_X, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) emit(fd, EV_REL, REL_Y, 5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) emit(fd, EV_SYN, SYN_REPORT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) usleep(15000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * Give userspace some time to read the events before we destroy the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * device with UI_DEV_DESTROY.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) sleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ioctl(fd, UI_DEV_DESTROY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) uinput old interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) --------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) Before uinput version 5, there wasn't a dedicated ioctl to set up a virtual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) device. Programs supportinf older versions of uinput interface need to fill
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) a uinput_user_dev structure and write it to the uinput file descriptor to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) configure the new uinput device. New code should not use the old interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) but interact with uinput via ioctl calls, or use libevdev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .. code-block:: c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #include <linux/uinput.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /* emit function is identical to of the first example */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int main(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct uinput_user_dev uud;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int version, rc, fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) rc = ioctl(fd, UI_GET_VERSION, &version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (rc == 0 && version >= 5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /* use UI_DEV_SETUP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * The ioctls below will enable the device that is about to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * created, to pass key events, in this case the space key.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) ioctl(fd, UI_SET_EVBIT, EV_KEY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) ioctl(fd, UI_SET_KEYBIT, KEY_SPACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) memset(&uud, 0, sizeof(uud));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) snprintf(uud.name, UINPUT_MAX_NAME_SIZE, "uinput old interface");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) write(fd, &uud, sizeof(uud));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) ioctl(fd, UI_DEV_CREATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * On UI_DEV_CREATE the kernel will create the device node for this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * device. We are inserting a pause here so that userspace has time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * to detect, initialize the new device, and can start listening to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * the event, otherwise it will not notice the event we are about
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * to send. This pause is only needed in our example code!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) sleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /* Key press, report the event, send key release, and report again */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) emit(fd, EV_KEY, KEY_SPACE, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) emit(fd, EV_SYN, SYN_REPORT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) emit(fd, EV_KEY, KEY_SPACE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) emit(fd, EV_SYN, SYN_REPORT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * Give userspace some time to read the events before we destroy the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * device with UI_DEV_DESTROY.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) sleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) ioctl(fd, UI_DEV_DESTROY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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