43 lines
958 B
C
43 lines
958 B
C
#include "evdev.h"
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#include <errno.h>
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#include <linux/input.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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int block_until_keypress(const char* keyboardPath) {
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int keyboardFd = open(keyboardPath, O_RDONLY);
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if (keyboardFd < 0) {
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return errno;
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}
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int eventSize = sizeof(struct input_event);
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int bytesRead = 0;
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struct input_event events[NUM_EVENTS];
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int readEvents = 1;
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while(readEvents) {
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bytesRead = read(keyboardFd, events, eventSize * NUM_EVENTS);
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if (bytesRead < 0) {
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return errno;
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}
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for(int i = 0; i < (bytesRead / eventSize); ++i) {
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struct input_event event = events[i];
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if(event.type == EV_KEY) {
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if(event.value == 1) {
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readEvents = 0;
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}
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}
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}
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}
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close(keyboardFd);
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return 0;
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}
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