Linux Event 事件查看

linux events bookmarks input delete null

linux kernel 中很多设备可以上报input事件，比方键盘、鼠标、加速传感器 （accelerometer sensor）等等，为在开发中调试分析这些事件，有个很好的网上工具evtest可以帮助分析event:

 /*
  * $Id: evtest.c,v 1.23 2005/02/06 13:51:42 vojtech Exp $
  *
  *  Copyright (c) 1999-2000 Vojtech Pavlik
  *
  *  Event device test program
  */
 /*
  * 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, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  *
  * Should you need to contact me, the author, you can do so either by
  * e-mail - mail your message to , or by paper mail:
  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  */
 #include
 #include
 #include
 #include
 #include
 #include
 #ifndef EV_SYN
 #define EV_SYN 0
 #endif
 char *events[EV_MAX + 1] = {
     [0 ... EV_MAX] = NULL,
     [EV_SYN] = "Sync",          [EV_KEY] = "Key",
     [EV_REL] = "Relative",          [EV_ABS] = "Absolute",
     [EV_MSC] = "Misc",          [EV_LED] = "LED",
     [EV_SND] = "Sound",         [EV_REP] = "Repeat",
     [EV_FF] = "ForceFeedback",      [EV_PWR] = "Power",
     [EV_FF_STATUS] = "ForceFeedbackStatus",
 };
 char *keys[KEY_MAX + 1] = {
     [0 ... KEY_MAX] = NULL,
     [KEY_RESERVED] = "Reserved",        [KEY_ESC] = "Esc",
     [KEY_1] = "1",              [KEY_2] = "2",
     [KEY_3] = "3",              [KEY_4] = "4",
     [KEY_5] = "5",              [KEY_6] = "6",
     [KEY_7] = "7",              [KEY_8] = "8",
     [KEY_9] = "9",              [KEY_0] = "0",
     [KEY_MINUS] = "Minus",          [KEY_EQUAL] = "Equal",
     [KEY_BACKSPACE] = "Backspace",      [KEY_TAB] = "Tab",
     [KEY_Q] = "Q",              [KEY_W] = "W",
     [KEY_E] = "E",              [KEY_R] = "R",
     [KEY_T] = "T",              [KEY_Y] = "Y",
     [KEY_U] = "U",              [KEY_I] = "I",
     [KEY_O] = "O",              [KEY_P] = "P",
     [KEY_LEFTBRACE] = "LeftBrace",      [KEY_RIGHTBRACE] = "RightBrace",
     [KEY_ENTER] = "Enter",          [KEY_LEFTCTRL] = "LeftControl",
     [KEY_A] = "A",              [KEY_S] = "S",
     [KEY_D] = "D",              [KEY_F] = "F",
     [KEY_G] = "G",              [KEY_H] = "H",
     [KEY_J] = "J",              [KEY_K] = "K",
     [KEY_L] = "L",              [KEY_SEMICOLON] = "Semicolon",
     [KEY_APOSTROPHE] = "Apostrophe",    [KEY_GRAVE] = "Grave",
     [KEY_LEFTSHIFT] = "LeftShift",      [KEY_BACKSLASH] = "BackSlash",
     [KEY_Z] = "Z",              [KEY_X] = "X",
     [KEY_C] = "C",              [KEY_V] = "V",
     [KEY_B] = "B",              [KEY_N] = "N",
     [KEY_M] = "M",              [KEY_COMMA] = "Comma",
     [KEY_DOT] = "Dot",          [KEY_SLASH] = "Slash",
     [KEY_RIGHTSHIFT] = "RightShift",    [KEY_KPASTERISK] = "KPAsterisk",
     [KEY_LEFTALT] = "LeftAlt",      [KEY_SPACE] = "Space",
     [KEY_CAPSLOCK] = "CapsLock",        [KEY_F1] = "F1",
     [KEY_F2] = "F2",            [KEY_F3] = "F3",
     [KEY_F4] = "F4",            [KEY_F5] = "F5",
     [KEY_F6] = "F6",            [KEY_F7] = "F7",
     [KEY_F8] = "F8",            [KEY_F9] = "F9",
     [KEY_F10] = "F10",          [KEY_NUMLOCK] = "NumLock",
     [KEY_SCROLLLOCK] = "ScrollLock",    [KEY_KP7] = "KP7",
     [KEY_KP8] = "KP8",          [KEY_KP9] = "KP9",
     [KEY_KPMINUS] = "KPMinus",      [KEY_KP4] = "KP4",
     [KEY_KP5] = "KP5",          [KEY_KP6] = "KP6",
     [KEY_KPPLUS] = "KPPlus",        [KEY_KP1] = "KP1",
     [KEY_KP2] = "KP2",          [KEY_KP3] = "KP3",
     [KEY_KP0] = "KP0",          [KEY_KPDOT] = "KPDot",
     [KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
     [KEY_F11] = "F11",          [KEY_F12] = "F12",
     [KEY_RO] = "RO",            [KEY_KATAKANA] = "Katakana",
     [KEY_HIRAGANA] = "HIRAGANA",        [KEY_HENKAN] = "Henkan",
     [KEY_KATAKANAHIRAGANA] = "Katakana/Hiragana", [KEY_MUHENKAN] = "Muhenkan",
     [KEY_KPJPCOMMA] = "KPJpComma",      [KEY_KPENTER] = "KPEnter",
     [KEY_RIGHTCTRL] = "RightCtrl",      [KEY_KPSLASH] = "KPSlash",
     [KEY_SYSRQ] = "SysRq",          [KEY_RIGHTALT] = "RightAlt",
     [KEY_LINEFEED] = "LineFeed",        [KEY_HOME] = "Home",
     [KEY_UP] = "Up",            [KEY_PAGEUP] = "PageUp",
     [KEY_LEFT] = "Left",            [KEY_RIGHT] = "Right",
     [KEY_END] = "End",          [KEY_DOWN] = "Down",
     [KEY_PAGEDOWN] = "PageDown",        [KEY_INSERT] = "Insert",
     [KEY_DELETE] = "Delete",        [KEY_MACRO] = "Macro",
     [KEY_MUTE] = "Mute",            [KEY_VOLUMEDOWN] = "VolumeDown",
     [KEY_VOLUMEUP] = "VolumeUp",        [KEY_POWER] = "Power",
     [KEY_KPEQUAL] = "KPEqual",      [KEY_KPPLUSMINUS] = "KPPlusMinus",
     [KEY_PAUSE] = "Pause",          [KEY_KPCOMMA] = "KPComma",
     [KEY_HANGUEL] = "Hanguel",      [KEY_HANJA] = "Hanja",
     [KEY_YEN] = "Yen",          [KEY_LEFTMETA] = "LeftMeta",
     [KEY_RIGHTMETA] = "RightMeta",      [KEY_COMPOSE] = "Compose",
     [KEY_STOP] = "Stop",            [KEY_AGAIN] = "Again",
     [KEY_PROPS] = "Props",          [KEY_UNDO] = "Undo",
     [KEY_FRONT] = "Front",          [KEY_COPY] = "Copy",
     [KEY_OPEN] = "Open",            [KEY_PASTE] = "Paste",
     [KEY_FIND] = "Find",            [KEY_CUT] = "Cut",
     [KEY_HELP] = "Help",            [KEY_MENU] = "Menu",
     [KEY_CALC] = "Calc",            [KEY_SETUP] = "Setup",
     [KEY_SLEEP] = "Sleep",          [KEY_WAKEUP] = "WakeUp",
     [KEY_FILE] = "File",            [KEY_SENDFILE] = "SendFile",
     [KEY_DELETEFILE] = "DeleteFile",    [KEY_XFER] = "X-fer",
     [KEY_PROG1] = "Prog1",          [KEY_PROG2] = "Prog2",
     [KEY_WWW] = "WWW",          [KEY_MSDOS] = "MSDOS",
     [KEY_COFFEE] = "Coffee",        [KEY_DIRECTION] = "Direction",
     [KEY_CYCLEWINDOWS] = "CycleWindows",    [KEY_MAIL] = "Mail",
     [KEY_BOOKMARKS] = "Bookmarks",      [KEY_COMPUTER] = "Computer",
     [KEY_BACK] = "Back",            [KEY_FORWARD] = "Forward",
     [KEY_CLOSECD] = "CloseCD",      [KEY_EJECTCD] = "EjectCD",
     [KEY_EJECTCLOSECD] = "EjectCloseCD",    [KEY_NEXTSONG] = "NextSong",
     [KEY_PLAYPAUSE] = "PlayPause",      [KEY_PREVIOUSSONG] = "PreviousSong",
     [KEY_STOPCD] = "StopCD",        [KEY_RECORD] = "Record",
     [KEY_REWIND] = "Rewind",        [KEY_PHONE] = "Phone",
     [KEY_ISO] = "ISOKey",           [KEY_CONFIG] = "Config",
     [KEY_HOMEPAGE] = "HomePage",        [KEY_REFRESH] = "Refresh",
     [KEY_EXIT] = "Exit",            [KEY_MOVE] = "Move",
     [KEY_EDIT] = "Edit",            [KEY_SCROLLUP] = "ScrollUp",
     [KEY_SCROLLDOWN] = "ScrollDown",    [KEY_KPLEFTPAREN] = "KPLeftParenthesis",
     [KEY_KPRIGHTPAREN] = "KPRightParenthesis", [KEY_F13] = "F13",
     [KEY_F14] = "F14",          [KEY_F15] = "F15",
     [KEY_F16] = "F16",          [KEY_F17] = "F17",
     [KEY_F18] = "F18",          [KEY_F19] = "F19",
     [KEY_F20] = "F20",          [KEY_F21] = "F21",
     [KEY_F22] = "F22",          [KEY_F23] = "F23",
     [KEY_F24] = "F24",          [KEY_PLAYCD] = "PlayCD",
     [KEY_PAUSECD] = "PauseCD",      [KEY_PROG3] = "Prog3",
     [KEY_PROG4] = "Prog4",          [KEY_SUSPEND] = "Suspend",
     [KEY_CLOSE] = "Close",          [KEY_PLAY] = "Play",
     [KEY_FASTFORWARD] = "Fast Forward", [KEY_BASSBOOST] = "Bass Boost",
     [KEY_PRINT] = "Print",          [KEY_HP] = "HP",
     [KEY_CAMERA] = "Camera",        [KEY_SOUND] = "Sound",
     [KEY_QUESTION] = "Question",        [KEY_EMAIL] = "Email",
     [KEY_CHAT] = "Chat",            [KEY_SEARCH] = "Search",
     [KEY_CONNECT] = "Connect",      [KEY_FINANCE] = "Finance",
     [KEY_SPORT] = "Sport",          [KEY_SHOP] = "Shop",
     [KEY_ALTERASE] = "Alternate Erase", [KEY_CANCEL] = "Cancel",
     [KEY_BRIGHTNESSDOWN] = "Brightness down", [KEY_BRIGHTNESSUP] = "Brightness up",
     [KEY_MEDIA] = "Media",          [KEY_UNKNOWN] = "Unknown",
     [BTN_0] = "Btn0",           [BTN_1] = "Btn1",
     [BTN_2] = "Btn2",           [BTN_3] = "Btn3",
     [BTN_4] = "Btn4",           [BTN_5] = "Btn5",
     [BTN_6] = "Btn6",           [BTN_7] = "Btn7",
     [BTN_8] = "Btn8",           [BTN_9] = "Btn9",
     [BTN_LEFT] = "LeftBtn",         [BTN_RIGHT] = "RightBtn",
     [BTN_MIDDLE] = "MiddleBtn",     [BTN_SIDE] = "SideBtn",
     [BTN_EXTRA] = "ExtraBtn",       [BTN_FORWARD] = "ForwardBtn",
     [BTN_BACK] = "BackBtn",         [BTN_TASK] = "TaskBtn",
     [BTN_TRIGGER] = "Trigger",      [BTN_THUMB] = "ThumbBtn",
     [BTN_THUMB2] = "ThumbBtn2",     [BTN_TOP] = "TopBtn",
     [BTN_TOP2] = "TopBtn2",         [BTN_PINKIE] = "PinkieBtn",
     [BTN_BASE] = "BaseBtn",         [BTN_BASE2] = "BaseBtn2",
     [BTN_BASE3] = "BaseBtn3",       [BTN_BASE4] = "BaseBtn4",
     [BTN_BASE5] = "BaseBtn5",       [BTN_BASE6] = "BaseBtn6",
     [BTN_DEAD] = "BtnDead",         [BTN_A] = "BtnA",
     [BTN_B] = "BtnB",           [BTN_C] = "BtnC",
     [BTN_X] = "BtnX",           [BTN_Y] = "BtnY",
     [BTN_Z] = "BtnZ",           [BTN_TL] = "BtnTL",
     [BTN_TR] = "BtnTR",         [BTN_TL2] = "BtnTL2",
     [BTN_TR2] = "BtnTR2",           [BTN_SELECT] = "BtnSelect",
     [BTN_START] = "BtnStart",       [BTN_MODE] = "BtnMode",
     [BTN_THUMBL] = "BtnThumbL",     [BTN_THUMBR] = "BtnThumbR",
     [BTN_TOOL_PEN] = "ToolPen",     [BTN_TOOL_RUBBER] = "ToolRubber",
     [BTN_TOOL_BRUSH] = "ToolBrush",     [BTN_TOOL_PENCIL] = "ToolPencil",
     [BTN_TOOL_AIRBRUSH] = "ToolAirbrush",   [BTN_TOOL_FINGER] = "ToolFinger",
     [BTN_TOOL_MOUSE] = "ToolMouse",     [BTN_TOOL_LENS] = "ToolLens",
     [BTN_TOUCH] = "Touch",          [BTN_STYLUS] = "Stylus",
     [BTN_STYLUS2] = "Stylus2",      [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
     [BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
     [BTN_GEAR_UP] = "Gear up",      [KEY_OK] = "Ok",
     [KEY_SELECT] = "Select",        [KEY_GOTO] = "Goto",
     [KEY_CLEAR] = "Clear",          [KEY_POWER2] = "Power2",
     [KEY_OPTION] = "Option",        [KEY_INFO] = "Info",
     [KEY_TIME] = "Time",            [KEY_VENDOR] = "Vendor",
     [KEY_ARCHIVE] = "Archive",      [KEY_PROGRAM] = "Program",
     [KEY_CHANNEL] = "Channel",      [KEY_FAVORITES] = "Favorites",
     [KEY_EPG] = "EPG",          [KEY_PVR] = "PVR",
     [KEY_MHP] = "MHP",          [KEY_LANGUAGE] = "Language",
     [KEY_TITLE] = "Title",          [KEY_SUBTITLE] = "Subtitle",
     [KEY_ANGLE] = "Angle",          [KEY_ZOOM] = "Zoom",
     [KEY_MODE] = "Mode",            [KEY_KEYBOARD] = "Keyboard",
     [KEY_SCREEN] = "Screen",        [KEY_PC] = "PC",
     [KEY_TV] = "TV",            [KEY_TV2] = "TV2",
     [KEY_VCR] = "VCR",          [KEY_VCR2] = "VCR2",
     [KEY_SAT] = "Sat",          [KEY_SAT2] = "Sat2",
     [KEY_CD] = "CD",            [KEY_TAPE] = "Tape",
     [KEY_RADIO] = "Radio",          [KEY_TUNER] = "Tuner",
     [KEY_PLAYER] = "Player",        [KEY_TEXT] = "Text",
     [KEY_DVD] = "DVD",          [KEY_AUX] = "Aux",
     [KEY_MP3] = "MP3",          [KEY_AUDIO] = "Audio",
     [KEY_VIDEO] = "Video",          [KEY_DIRECTORY] = "Directory",
     [KEY_LIST] = "List",            [KEY_MEMO] = "Memo",
     [KEY_CALENDAR] = "Calendar",        [KEY_RED] = "Red",
     [KEY_GREEN] = "Green",          [KEY_YELLOW] = "Yellow",
     [KEY_BLUE] = "Blue",            [KEY_CHANNELUP] = "ChannelUp",
     [KEY_CHANNELDOWN] = "ChannelDown",  [KEY_FIRST] = "First",
     [KEY_LAST] = "Last",            [KEY_AB] = "AB",
     [KEY_NEXT] = "Next",            [KEY_RESTART] = "Restart",
     [KEY_SLOW] = "Slow",            [KEY_SHUFFLE] = "Shuffle",
     [KEY_BREAK] = "Break",          [KEY_PREVIOUS] = "Previous",
     [KEY_DIGITS] = "Digits",        [KEY_TEEN] = "TEEN",
     [KEY_TWEN] = "TWEN",            [KEY_DEL_EOL] = "Delete EOL",
     [KEY_DEL_EOS] = "Delete EOS",       [KEY_INS_LINE] = "Insert line",
     [KEY_DEL_LINE] = "Delete line",
 };
 char *absval[5] = { "Value", "Min  ", "Max  ", "Fuzz ", "Flat " };
 char *relatives[REL_MAX + 1] = {
     [0 ... REL_MAX] = NULL,
     [REL_X] = "X",          [REL_Y] = "Y",
     [REL_Z] = "Z",          [REL_HWHEEL] = "HWheel",
     [REL_DIAL] = "Dial",        [REL_WHEEL] = "Wheel",
     [REL_MISC] = "Misc",
 };
 char *absolutes[ABS_MAX + 1] = {
     [0 ... ABS_MAX] = NULL,
     [ABS_X] = "X",          [ABS_Y] = "Y",
     [ABS_Z] = "Z",          [ABS_RX] = "Rx",
     [ABS_RY] = "Ry",        [ABS_RZ] = "Rz",
     [ABS_THROTTLE] = "Throttle",    [ABS_RUDDER] = "Rudder",
     [ABS_WHEEL] = "Wheel",      [ABS_GAS] = "Gas",
     [ABS_BRAKE] = "Brake",      [ABS_HAT0X] = "Hat0X",
     [ABS_HAT0Y] = "Hat0Y",      [ABS_HAT1X] = "Hat1X",
     [ABS_HAT1Y] = "Hat1Y",      [ABS_HAT2X] = "Hat2X",
     [ABS_HAT2Y] = "Hat2Y",      [ABS_HAT3X] = "Hat3X",
     [ABS_HAT3Y] = "Hat 3Y",     [ABS_PRESSURE] = "Pressure",
     [ABS_DISTANCE] = "Distance",    [ABS_TILT_X] = "XTilt",
     [ABS_TILT_Y] = "YTilt",     [ABS_TOOL_WIDTH] = "Tool Width",
     [ABS_VOLUME] = "Volume",    [ABS_MISC] = "Misc",
 };
 char *misc[MSC_MAX + 1] = {
     [ 0 ... MSC_MAX] = NULL,
     [MSC_SERIAL] = "Serial",    [MSC_PULSELED] = "Pulseled",
     [MSC_GESTURE] = "Gesture",  [MSC_RAW] = "RawData",
     [MSC_SCAN] = "ScanCode",
 };
 char *leds[LED_MAX + 1] = {
     [0 ... LED_MAX] = NULL,
     [LED_NUML] = "NumLock",     [LED_CAPSL] = "CapsLock",
     [LED_SCROLLL] = "ScrollLock",   [LED_COMPOSE] = "Compose",
     [LED_KANA] = "Kana",        [LED_SLEEP] = "Sleep",
     [LED_SUSPEND] = "Suspend",  [LED_MUTE] = "Mute",
     [LED_MISC] = "Misc",
 };
 char *repeats[REP_MAX + 1] = {
     [0 ... REP_MAX] = NULL,
     [REP_DELAY] = "Delay",      [REP_PERIOD] = "Period"
 };
 char *sounds[SND_MAX + 1] = {
     [0 ... SND_MAX] = NULL,
     [SND_CLICK] = "Click",      [SND_BELL] = "Bell",
     [SND_TONE] = "Tone"
 };
 char **names[EV_MAX + 1] = {
     [0 ... EV_MAX] = NULL,
     [EV_SYN] = events,          [EV_KEY] = keys,
     [EV_REL] = relatives,           [EV_ABS] = absolutes,
     [EV_MSC] = misc,            [EV_LED] = leds,
     [EV_SND] = sounds,          [EV_REP] = repeats,
 };
 #define BITS_PER_LONG (sizeof(long) * 8)
 #define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
 #define OFF(x)  ((x)%BITS_PER_LONG)
 #define BIT(x)  (1UL<
 #define LONG(x) ((x)/BITS_PER_LONG)
 #define test_bit(bit, array)    ((array[LONG(bit)] >> OFF(bit)) & 1)
 int main (int argc, char **argv)
 {
     int fd, rd, i, j, k;
     struct input_event ev[64];
     int version;
     unsigned short id[4];
     unsigned long bit[EV_MAX][NBITS(KEY_MAX)];
     char name[256] = "Unknown";
     int abs[5];
     if (argc < 2) {
         printf("Usage: evtest /dev/input/eventX/n");
         printf("Where X = input device number/n");
         return 1;
     }
     if ((fd = open(argv[argc - 1], O_RDONLY)) < 0) {
         perror("evtest");
         return 1;
     }
     if (ioctl(fd, EVIOCGVERSION, &version)) {
         perror("evtest: can't get version");
         return 1;
     }
     printf("Input driver version is %d.%d.%d/n",
         version >> 16, (version >> 8) & 0xff, version & 0xff);
     ioctl(fd, EVIOCGID, id);
     printf("Input device ID: bus 0x%x vendor 0x%x product 0x%x version 0x%x/n",
         id[ID_BUS], id[ID_VENDOR], id[ID_PRODUCT], id[ID_VERSION]);
     ioctl(fd, EVIOCGNAME(sizeof(name)), name);
     printf("Input device name: /"%s/"/n", name);
     memset(bit, 0, sizeof(bit));
     ioctl(fd, EVIOCGBIT(0, EV_MAX), bit[0]);
     printf("Supported events:/n");
     for (i = 0; i < EV_MAX; i++)
         if (test_bit(i, bit[0])) {
             printf("  Event type %d (%s)/n", i, events[i] ? events[i] : "?");
             if (!i) continue;
             ioctl(fd, EVIOCGBIT(i, KEY_MAX), bit[i]);
             for (j = 0; j < KEY_MAX; j++)
                 if (test_bit(j, bit[i])) {
                     printf("    Event code %d (%s)/n", j, names[i] ? (names[i][j] ? names[i][j] : "?") : "?");
                     if (i == EV_ABS) {
                         ioctl(fd, EVIOCGABS(j), abs);
                         for (k = 0; k < 5; k++)
                             if ((k < 3) || abs[k])
                                 printf("      %s %6d/n", absval[k], abs[k]);
                     }
                 }
         }

     printf("Testing ... (interrupt to exit)/n");
     while (1) {
         rd = read(fd, ev, sizeof(struct input_event) * 64);
         if (rd < (int) sizeof(struct input_event)) {
             printf("yyy/n");
             perror("/nevtest: error reading");
             return 1;
         }
         for (i = 0; i < rd / sizeof(struct input_event); i++)
             if (ev[i].type == EV_SYN) {
                 printf("Event: time %ld.%06ld, -------------- %s ------------/n",
                     ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].code ? "Config Sync" : "Report Sync" );
             } else if (ev[i].type == EV_MSC && (ev[i].code == MSC_RAW || ev[i].code == MSC_SCAN)) {
                 printf("Event: time %ld.%06ld, type %d (%s), code %d (%s), value %02x/n",
                     ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].type,
                     events[ev[i].type] ? events[ev[i].type] : "?",
                     ev[i].code,
                     names[ev[i].type] ? (names[ev[i].type][ev[i].code] ? names[ev[i].type][ev[i].code] : "?") : "?",
                     ev[i].value);
             } else {
                 printf("Event: time %ld.%06ld, type %d (%s), code %d (%s), value %d/n",
                     ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].type,
                     events[ev[i].type] ? events[ev[i].type] : "?",
                     ev[i].code,
                     names[ev[i].type] ? (names[ev[i].type][ev[i].code] ? names[ev[i].type][ev[i].code] : "?") : "?",
                     ev[i].value);
             }
     }
 }

修改后：

/*
 * $Id: evtest.c,v 1.23 2005/02/06 13:51:42 vojtech Exp $
 *
 *  Copyright (c) 1999-2000 Vojtech Pavlik
 *
 *  Event device test program
 */


/*
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 * 
 * Should you need to contact me, the author, you can do so either by
 * e-mail - mail your message to , or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */


#include


#include


#include
#include
#include
#include


#ifndef EV_SYN
#define EV_SYN 0
#endif


char *events[EV_MAX + 1] = {
[0 ... EV_MAX] = NULL,
[EV_SYN] = "Sync", [EV_KEY] = "Key",
[EV_REL] = "Relative", [EV_ABS] = "Absolute",
[EV_MSC] = "Misc", [EV_LED] = "LED",
[EV_SND] = "Sound", [EV_REP] = "Repeat",
[EV_FF] = "ForceFeedback", [EV_PWR] = "Power",
[EV_FF_STATUS] = "ForceFeedbackStatus",
};


char *keys[KEY_MAX + 1] = {
[0 ... KEY_MAX] = NULL,
[KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
[KEY_1] = "1", [KEY_2] = "2",
[KEY_3] = "3", [KEY_4] = "4",
[KEY_5] = "5", [KEY_6] = "6",
[KEY_7] = "7", [KEY_8] = "8",
[KEY_9] = "9", [KEY_0] = "0",
[KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
[KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
[KEY_Q] = "Q", [KEY_W] = "W",
[KEY_E] = "E", [KEY_R] = "R",
[KEY_T] = "T", [KEY_Y] = "Y",
[KEY_U] = "U", [KEY_I] = "I",
[KEY_O] = "O", [KEY_P] = "P",
[KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
[KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
[KEY_A] = "A", [KEY_S] = "S",
[KEY_D] = "D", [KEY_F] = "F",
[KEY_G] = "G", [KEY_H] = "H",
[KEY_J] = "J", [KEY_K] = "K",
[KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
[KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
[KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
[KEY_Z] = "Z", [KEY_X] = "X",
[KEY_C] = "C", [KEY_V] = "V",
[KEY_B] = "B", [KEY_N] = "N",
[KEY_M] = "M", [KEY_COMMA] = "Comma",
[KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
[KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
[KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
[KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
[KEY_F2] = "F2", [KEY_F3] = "F3",
[KEY_F4] = "F4", [KEY_F5] = "F5",
[KEY_F6] = "F6", [KEY_F7] = "F7",
[KEY_F8] = "F8", [KEY_F9] = "F9",
[KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
[KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
[KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
[KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
[KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
[KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
[KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
[KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
[KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
[KEY_F11] = "F11", [KEY_F12] = "F12",
[KEY_RO] = "RO", [KEY_KATAKANA] = "Katakana",
[KEY_HIRAGANA] = "HIRAGANA", [KEY_HENKAN] = "Henkan",
[KEY_KATAKANAHIRAGANA] = "Katakana/Hiragana", [KEY_MUHENKAN] = "Muhenkan",
[KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
[KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
[KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
[KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
[KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
[KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
[KEY_END] = "End", [KEY_DOWN] = "Down",
[KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
[KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
[KEY_MUTE] = "Mute", [KEY_VOLUMEDOWN] = "VolumeDown",
[KEY_VOLUMEUP] = "VolumeUp", [KEY_POWER] = "Power",
[KEY_KPEQUAL] = "KPEqual", [KEY_KPPLUSMINUS] = "KPPlusMinus",
[KEY_PAUSE] = "Pause", [KEY_KPCOMMA] = "KPComma",
[KEY_HANGUEL] = "Hanguel", [KEY_HANJA] = "Hanja",
[KEY_YEN] = "Yen", [KEY_LEFTMETA] = "LeftMeta",
[KEY_RIGHTMETA] = "RightMeta", [KEY_COMPOSE] = "Compose",
[KEY_STOP] = "Stop", [KEY_AGAIN] = "Again",
[KEY_PROPS] = "Props", [KEY_UNDO] = "Undo",
[KEY_FRONT] = "Front", [KEY_COPY] = "Copy",
[KEY_OPEN] = "Open", [KEY_PASTE] = "Paste",
[KEY_FIND] = "Find", [KEY_CUT] = "Cut",
[KEY_HELP] = "Help", [KEY_MENU] = "Menu",
[KEY_CALC] = "Calc", [KEY_SETUP] = "Setup",
[KEY_SLEEP] = "Sleep", [KEY_WAKEUP] = "WakeUp",
[KEY_FILE] = "File", [KEY_SENDFILE] = "SendFile",
[KEY_DELETEFILE] = "DeleteFile", [KEY_XFER] = "X-fer",
[KEY_PROG1] = "Prog1", [KEY_PROG2] = "Prog2",
[KEY_WWW] = "WWW", [KEY_MSDOS] = "MSDOS",
[KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction",
[KEY_CYCLEWINDOWS] = "CycleWindows", [KEY_MAIL] = "Mail",
[KEY_BOOKMARKS] = "Bookmarks", [KEY_COMPUTER] = "Computer",
[KEY_BACK] = "Back", [KEY_FORWARD] = "Forward",
[KEY_CLOSECD] = "CloseCD", [KEY_EJECTCD] = "EjectCD",
[KEY_EJECTCLOSECD] = "EjectCloseCD", [KEY_NEXTSONG] = "NextSong",
[KEY_PLAYPAUSE] = "PlayPause", [KEY_PREVIOUSSONG] = "PreviousSong",
[KEY_STOPCD] = "StopCD", [KEY_RECORD] = "Record",
[KEY_REWIND] = "Rewind", [KEY_PHONE] = "Phone",
[KEY_ISO] = "ISOKey", [KEY_CONFIG] = "Config",
[KEY_HOMEPAGE] = "HomePage", [KEY_REFRESH] = "Refresh",
[KEY_EXIT] = "Exit", [KEY_MOVE] = "Move",
[KEY_EDIT] = "Edit", [KEY_SCROLLUP] = "ScrollUp",
[KEY_SCROLLDOWN] = "ScrollDown", [KEY_KPLEFTPAREN] = "KPLeftParenthesis",
[KEY_KPRIGHTPAREN] = "KPRightParenthesis", [KEY_F13] = "F13",
[KEY_F14] = "F14", [KEY_F15] = "F15",
[KEY_F16] = "F16", [KEY_F17] = "F17",
[KEY_F18] = "F18", [KEY_F19] = "F19",
[KEY_F20] = "F20", [KEY_F21] = "F21",
[KEY_F22] = "F22", [KEY_F23] = "F23",
[KEY_F24] = "F24", [KEY_PLAYCD] = "PlayCD",
[KEY_PAUSECD] = "PauseCD", [KEY_PROG3] = "Prog3",
[KEY_PROG4] = "Prog4", [KEY_SUSPEND] = "Suspend",
[KEY_CLOSE] = "Close", [KEY_PLAY] = "Play",
[KEY_FASTFORWARD] = "Fast Forward", [KEY_BASSBOOST] = "Bass Boost",
[KEY_PRINT] = "Print", [KEY_HP] = "HP",
[KEY_CAMERA] = "Camera", [KEY_SOUND] = "Sound",
[KEY_QUESTION] = "Question", [KEY_EMAIL] = "Email",
[KEY_CHAT] = "Chat", [KEY_SEARCH] = "Search",
[KEY_CONNECT] = "Connect", [KEY_FINANCE] = "Finance",
[KEY_SPORT] = "Sport", [KEY_SHOP] = "Shop",
[KEY_ALTERASE] = "Alternate Erase", [KEY_CANCEL] = "Cancel",
[KEY_BRIGHTNESSDOWN] = "Brightness down", [KEY_BRIGHTNESSUP] = "Brightness up",
[KEY_MEDIA] = "Media", [KEY_UNKNOWN] = "Unknown",
[BTN_0] = "Btn0", [BTN_1] = "Btn1",
[BTN_2] = "Btn2", [BTN_3] = "Btn3",
[BTN_4] = "Btn4", [BTN_5] = "Btn5",
[BTN_6] = "Btn6", [BTN_7] = "Btn7",
[BTN_8] = "Btn8", [BTN_9] = "Btn9",
[BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
[BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
[BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
[BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
[BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
[BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
[BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
[BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
[BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
[BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
[BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
[BTN_B] = "BtnB", [BTN_C] = "BtnC",
[BTN_X] = "BtnX", [BTN_Y] = "BtnY",
[BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
[BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
[BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
[BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
[BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
[BTN_TOOL_PEN] = "ToolPen", [BTN_TOOL_RUBBER] = "ToolRubber",
[BTN_TOOL_BRUSH] = "ToolBrush", [BTN_TOOL_PENCIL] = "ToolPencil",
[BTN_TOOL_AIRBRUSH] = "ToolAirbrush", [BTN_TOOL_FINGER] = "ToolFinger",
[BTN_TOOL_MOUSE] = "ToolMouse", [BTN_TOOL_LENS] = "ToolLens",
[BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
[BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
[BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
[BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
[KEY_SELECT] = "Select", [KEY_GOTO] = "Goto",
[KEY_CLEAR] = "Clear", [KEY_POWER2] = "Power2",
[KEY_OPTION] = "Option", [KEY_INFO] = "Info",
[KEY_TIME] = "Time", [KEY_VENDOR] = "Vendor",
[KEY_ARCHIVE] = "Archive", [KEY_PROGRAM] = "Program",
[KEY_CHANNEL] = "Channel", [KEY_FAVORITES] = "Favorites",
[KEY_EPG] = "EPG", [KEY_PVR] = "PVR",
[KEY_MHP] = "MHP", [KEY_LANGUAGE] = "Language",
[KEY_TITLE] = "Title", [KEY_SUBTITLE] = "Subtitle",
[KEY_ANGLE] = "Angle", [KEY_ZOOM] = "Zoom",
[KEY_MODE] = "Mode", [KEY_KEYBOARD] = "Keyboard",
[KEY_SCREEN] = "Screen", [KEY_PC] = "PC",
[KEY_TV] = "TV", [KEY_TV2] = "TV2",
[KEY_VCR] = "VCR", [KEY_VCR2] = "VCR2",
[KEY_SAT] = "Sat", [KEY_SAT2] = "Sat2",
[KEY_CD] = "CD", [KEY_TAPE] = "Tape",
[KEY_RADIO] = "Radio", [KEY_TUNER] = "Tuner",
[KEY_PLAYER] = "Player", [KEY_TEXT] = "Text",
[KEY_DVD] = "DVD", [KEY_AUX] = "Aux",
[KEY_MP3] = "MP3", [KEY_AUDIO] = "Audio",
[KEY_VIDEO] = "Video", [KEY_DIRECTORY] = "Directory",
[KEY_LIST] = "List", [KEY_MEMO] = "Memo",
[KEY_CALENDAR] = "Calendar", [KEY_RED] = "Red",
[KEY_GREEN] = "Green", [KEY_YELLOW] = "Yellow",
[KEY_BLUE] = "Blue", [KEY_CHANNELUP] = "ChannelUp",
[KEY_CHANNELDOWN] = "ChannelDown", [KEY_FIRST] = "First",
[KEY_LAST] = "Last", [KEY_AB] = "AB",
[KEY_NEXT] = "Next", [KEY_RESTART] = "Restart",
[KEY_SLOW] = "Slow", [KEY_SHUFFLE] = "Shuffle",
[KEY_BREAK] = "Break", [KEY_PREVIOUS] = "Previous",
[KEY_DIGITS] = "Digits", [KEY_TEEN] = "TEEN",
[KEY_TWEN] = "TWEN", [KEY_DEL_EOL] = "Delete EOL",
[KEY_DEL_EOS] = "Delete EOS", [KEY_INS_LINE] = "Insert line",
[KEY_DEL_LINE] = "Delete line",
};


char *absval[5] = { "Value", "Min  ", "Max  ", "Fuzz ", "Flat " };


char *relatives[REL_MAX + 1] = {
[0 ... REL_MAX] = NULL,
[REL_X] = "X", [REL_Y] = "Y",
[REL_Z] = "Z", [REL_HWHEEL] = "HWheel",
[REL_DIAL] = "Dial", [REL_WHEEL] = "Wheel", 
[REL_MISC] = "Misc",
};


char *absolutes[ABS_MAX + 1] = {
[0 ... ABS_MAX] = NULL,
[ABS_X] = "X", [ABS_Y] = "Y",
[ABS_Z] = "Z", [ABS_RX] = "Rx",
[ABS_RY] = "Ry", [ABS_RZ] = "Rz",
[ABS_THROTTLE] = "Throttle", [ABS_RUDDER] = "Rudder",
[ABS_WHEEL] = "Wheel", [ABS_GAS] = "Gas",
[ABS_BRAKE] = "Brake", [ABS_HAT0X] = "Hat0X",
[ABS_HAT0Y] = "Hat0Y", [ABS_HAT1X] = "Hat1X",
[ABS_HAT1Y] = "Hat1Y", [ABS_HAT2X] = "Hat2X",
[ABS_HAT2Y] = "Hat2Y", [ABS_HAT3X] = "Hat3X",
[ABS_HAT3Y] = "Hat 3Y", [ABS_PRESSURE] = "Pressure",
[ABS_DISTANCE] = "Distance", [ABS_TILT_X] = "XTilt",
[ABS_TILT_Y] = "YTilt", [ABS_TOOL_WIDTH] = "Tool Width",
[ABS_VOLUME] = "Volume", [ABS_MISC] = "Misc",
};


char *misc[MSC_MAX + 1] = {
[ 0 ... MSC_MAX] = NULL,
[MSC_SERIAL] = "Serial", [MSC_PULSELED] = "Pulseled",
[MSC_GESTURE] = "Gesture", [MSC_RAW] = "RawData",
[MSC_SCAN] = "ScanCode",
};


char *leds[LED_MAX + 1] = {
[0 ... LED_MAX] = NULL,
[LED_NUML] = "NumLock", [LED_CAPSL] = "CapsLock", 
[LED_SCROLLL] = "ScrollLock", [LED_COMPOSE] = "Compose",
[LED_KANA] = "Kana", [LED_SLEEP] = "Sleep", 
[LED_SUSPEND] = "Suspend", [LED_MUTE] = "Mute",
[LED_MISC] = "Misc",
};


char *repeats[REP_MAX + 1] = {
[0 ... REP_MAX] = NULL,
[REP_DELAY] = "Delay", [REP_PERIOD] = "Period"
};


char *sounds[SND_MAX + 1] = {
[0 ... SND_MAX] = NULL,
[SND_CLICK] = "Click", [SND_BELL] = "Bell",
[SND_TONE] = "Tone"
};


char **names[EV_MAX + 1] = {
[0 ... EV_MAX] = NULL,
[EV_SYN] = events, [EV_KEY] = keys,
[EV_REL] = relatives, [EV_ABS] = absolutes,
[EV_MSC] = misc, [EV_LED] = leds,
[EV_SND] = sounds, [EV_REP] = repeats,
};


#define BITS_PER_LONG (sizeof(long) * 8)
#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
#define OFF(x)  ((x)%BITS_PER_LONG)
#define BIT(x)  (1UL< #define LONG(x) ((x)/BITS_PER_LONG)
#define test_bit(bit, array) ((array[LONG(bit)] >> OFF(bit)) & 1)


int main (int argc, char **argv)
{
int fd, rd, i, j, k;
struct input_event ev[64];
int version;
unsigned short id[4];
unsigned long bit[EV_MAX][NBITS(KEY_MAX)];
char name[256] = "Unknown";
int abs[5];


if (argc < 2) {
printf("Usage: evtest /dev/input/eventX\n");
printf("Where X = input device number\n");
return 1;
}


if ((fd = open(argv[argc - 1], O_RDONLY)) < 0) {
perror("evtest");
return 1;
}


if (ioctl(fd, EVIOCGVERSION, &version)) {
perror("evtest: can't get version");
return 1;
}


printf("Input driver version is %d.%d.%d\n",
version >> 16, (version >> 8) & 0xff, version & 0xff);


ioctl(fd, EVIOCGID, id);
printf("Input device ID: bus 0x%x vendor 0x%x product 0x%x version 0x%x\n",
id[ID_BUS], id[ID_VENDOR], id[ID_PRODUCT], id[ID_VERSION]);


ioctl(fd, EVIOCGNAME(sizeof(name)), name);
printf("Input device name: \"%s\"\n", name);


memset(bit, 0, sizeof(bit));
ioctl(fd, EVIOCGBIT(0, EV_MAX), bit[0]);
printf("Supported events:\n");


for (i = 0; i < EV_MAX; i++)
if (test_bit(i, bit[0])) {
printf("  Event type %d (%s)\n", i, events[i] ? events[i] : "?");
if (!i) continue;
ioctl(fd, EVIOCGBIT(i, KEY_MAX), bit[i]);
for (j = 0; j < KEY_MAX; j++) 
if (test_bit(j, bit[i])) {
printf("    Event code %d (%s)\n", j, names[i] ? (names[i][j] ? names[i][j] : "?") : "?");
if (i == EV_ABS) {
ioctl(fd, EVIOCGABS(j), abs);
for (k = 0; k < 5; k++)
if ((k < 3) || abs[k])
printf("      %s %6d\n", absval[k], abs[k]);
}
}
}



printf("Testing ... (interrupt to exit)\n");


while (1) {
rd = read(fd, ev, sizeof(struct input_event) * 64);


if (rd < (int) sizeof(struct input_event)) {
printf("yyy\n");
perror("\nevtest: error reading");
return 1;
}


for (i = 0; i < rd / sizeof(struct input_event); i++)


if (ev[i].type == EV_SYN) {
printf("Event: time %ld.%06ld, -------------- %s ------------\n",
ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].code ? "Config Sync" : "Report Sync" );
} else if (ev[i].type == EV_MSC && (ev[i].code == MSC_RAW || ev[i].code == MSC_SCAN)) {
printf("Event: time %ld.%06ld, type %d (%s), code %d (%s), value %02x\n",
ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].type,
events[ev[i].type] ? events[ev[i].type] : "?",
ev[i].code,
names[ev[i].type] ? (names[ev[i].type][ev[i].code] ? names[ev[i].type][ev[i].code] : "?") : "?",
ev[i].value);
} else {
printf("Event: time %ld.%06ld, type %d (%s), code %d (%s), value %d\n",
ev[i].time.tv_sec, ev[i].time.tv_usec, ev[i].type,
events[ev[i].type] ? events[ev[i].type] : "?",
ev[i].code,
names[ev[i].type] ? (names[ev[i].type][ev[i].code] ? names[ev[i].type][ev[i].code] : "?") : "?",
ev[i].value);
}


}
}