/*
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* Copyright (c) 2015 Cedric Hnyda <chnyda@suse.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Create a virtual device, activate auto-repeat and
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* and check that auto repeat is working
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*/
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#include <linux/input.h>
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#include <linux/uinput.h>
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#include <linux/kd.h>
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#include "test.h"
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#include "safe_macros.h"
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#include "lapi/fcntl.h"
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#include "input_helper.h"
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static void setup(void);
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static void send_events(void);
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static int check_events(void);
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static void cleanup(void);
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static int fd;
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static int fd2;
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struct input_event events[64];
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static int num_events;
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static int ev_iter;
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char *TCID = "input06";
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int main(int ac, char **av)
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{
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int lc;
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int pid;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); ++lc) {
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pid = tst_fork();
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switch (pid) {
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case 0:
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send_events();
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exit(0);
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case -1:
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tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
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default:
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if (!check_events())
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tst_resm(TFAIL,
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"Wrong data received in eventX");
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else
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tst_resm(TPASS, "Data received in eventX");
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break;
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}
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SAFE_WAITPID(NULL, pid, NULL, 0);
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_require_root();
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fd = open_uinput();
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SAFE_IOCTL(NULL, fd, UI_SET_EVBIT, EV_KEY);
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SAFE_IOCTL(NULL, fd, UI_SET_EVBIT, EV_REP);
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SAFE_IOCTL(NULL, fd, UI_SET_KEYBIT, KEY_X);
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create_device(fd);
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fd2 = open_device();
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SAFE_IOCTL(NULL, fd2, EVIOCGRAB, 1);
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}
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static void send_events(void)
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{
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send_event(fd, EV_KEY, KEY_X, 1);
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send_event(fd, EV_SYN, 0, 0);
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/*
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* Sleep long enough to keep the key pressed for some time
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* (auto-repeat). Default kernel delay to start auto-repeat is 250ms
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* and the period is 33ms. So, we wait for a generous 500ms to make
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* sure we get the auto-repeated keys
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*/
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usleep(500000);
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send_event(fd, EV_KEY, KEY_X, 0);
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send_event(fd, EV_SYN, 0, 0);
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}
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static int check_event(struct input_event *iev, int event, int code, int value)
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{
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return iev->type == event && iev->code == code && iev->value == value;
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}
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static void read_events(void)
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{
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int rd = read(fd2, events, sizeof(events));
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if (rd < 0)
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tst_brkm(TBROK | TERRNO, cleanup, "read() failed");
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if (rd == 0)
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tst_brkm(TBROK, cleanup, "Failed to read events");
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if (rd % sizeof(struct input_event) != 0) {
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tst_brkm(TBROK, cleanup, "read size %i not multiple of %zu",
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rd, sizeof(struct input_event));
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}
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ev_iter = 0;
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num_events = rd / sizeof(struct input_event);
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}
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static int have_events(void)
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{
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return num_events && ev_iter < num_events;
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}
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static struct input_event *next_event(void)
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{
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if (!have_events())
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read_events();
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return &events[ev_iter++];
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}
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static int parse_autorepeat_config(struct input_event *iev)
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{
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if (!check_event_code(iev, EV_REP, REP_DELAY)) {
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tst_resm(TFAIL,
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"Didn't get EV_REP configuration with code REP_DELAY");
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return 0;
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}
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if (!check_event_code(next_event(), EV_REP, REP_PERIOD)) {
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tst_resm(TFAIL,
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"Didn't get EV_REP configuration with code REP_PERIOD");
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return 0;
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}
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return 1;
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}
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static int parse_key(struct input_event *iev)
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{
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int autorep_count = 0;
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if (!check_event(iev, EV_KEY, KEY_X, 1) || !check_sync_event(next_event())) {
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tst_resm(TFAIL, "Didn't get expected key press for KEY_X");
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return 0;
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}
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iev = next_event();
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while (check_event(iev, EV_KEY, KEY_X, 2) && check_sync_event(next_event())) {
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autorep_count++;
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iev = next_event();
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}
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/* make sure we have atleast one auto-repeated key event */
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if (!autorep_count) {
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tst_resm(TFAIL,
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"Didn't get autorepeat events for the key - KEY_X");
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return 0;
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}
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if (!check_event(iev, EV_KEY, KEY_X, 0) || !check_sync_event(next_event())) {
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tst_resm(TFAIL,
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"Didn't get expected key release for KEY_X");
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return 0;
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}
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tst_resm(TINFO,
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"Received %d repititions for KEY_X", autorep_count);
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return 1;
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}
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static int check_events(void)
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{
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struct input_event *iev;
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int ret = 0;
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int rep_config_done = 0;
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int rep_keys_done = 0;
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read_events();
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while (have_events()) {
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iev = next_event();
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switch (iev->type) {
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case EV_REP:
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ret = parse_autorepeat_config(iev);
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rep_config_done = 1;
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break;
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case EV_KEY:
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ret = parse_key(iev);
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rep_keys_done = 1;
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break;
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default:
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tst_resm(TFAIL,
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"Unexpected event type '0x%04x' received",
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iev->type);
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ret = 0;
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break;
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}
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if (!ret || (rep_config_done && rep_keys_done))
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break;
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}
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return ret;
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}
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static void cleanup(void)
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{
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if (fd2 > 0 && close(fd2))
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tst_resm(TWARN | TERRNO, "close(fd2) failed");
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destroy_device(fd);
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}
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