oreore-ioctl.c

#include <sys/ioctl.h>
#include <error.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>

int main(int argc, const char *argv[]) {
        int fd;

        fd = open("/sys/kernel/security/rootconn/server", O_NONBLOCK|O_WRONLY);
        if(fd < 0) {
                perror("open");
                return 1;
        }
        printf("FD is %d\n", fd);
        if(ioctl(fd, 0, "hogehoge") < 0) {
                perror("ioctl");
                return 1;
        }

        return 0;
}