42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
#include <errno.h>
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#include <fcntl.h>
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#include <linux/input.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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int sendevent_main(int argc, char *argv[])
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{
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int fd;
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ssize_t ret;
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int version;
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struct input_event event;
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if(argc != 5) {
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fprintf(stderr, "use: %s device type code value\n", argv[0]);
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return 1;
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}
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fd = open(argv[1], O_RDWR);
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if(fd < 0) {
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fprintf(stderr, "could not open %s, %s\n", argv[optind], strerror(errno));
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return 1;
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}
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if (ioctl(fd, EVIOCGVERSION, &version)) {
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fprintf(stderr, "could not get driver version for %s, %s\n", argv[optind], strerror(errno));
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return 1;
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}
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memset(&event, 0, sizeof(event));
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event.type = atoi(argv[2]);
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event.code = atoi(argv[3]);
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event.value = atoi(argv[4]);
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ret = write(fd, &event, sizeof(event));
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if(ret < (ssize_t) sizeof(event)) {
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fprintf(stderr, "write event failed, %s\n", strerror(errno));
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return -1;
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}
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return 0;
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}
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