xref: /third_party/toybox/toys/android/sendevent.c (revision 0f66f451)
1/* sendevent.c - Send Linux input events.
2 *
3 * Copyright 2016 The Android Open Source Project
4
5USE_SENDEVENT(NEWTOY(sendevent, "<4>4", TOYFLAG_USR|TOYFLAG_SBIN))
6
7config SENDEVENT
8  bool "sendevent"
9  default y
10  depends on TOYBOX_ON_ANDROID
11  help
12    usage: sendevent DEVICE TYPE CODE VALUE
13
14    Sends a Linux input event.
15*/
16
17#define FOR_sendevent
18#include "toys.h"
19
20#include <linux/input.h>
21
22void sendevent_main(void)
23{
24  int fd = xopen(*toys.optargs, O_RDWR);
25  int version;
26  struct input_event ev;
27
28  if (ioctl(fd, EVIOCGVERSION, &version))
29    perror_exit("EVIOCGVERSION failed for %s", *toys.optargs);
30
31  memset(&ev, 0, sizeof(ev));
32  // TODO: error checking and support for named constants.
33  ev.type = atoi(toys.optargs[1]);
34  ev.code = atoi(toys.optargs[2]);
35  ev.value = atoi(toys.optargs[3]);
36  xwrite(fd, &ev, sizeof(ev));
37}
38