源代码:
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
int main(int argc, char *argv[]) {
int fd, rc;
char enabled = 1;
fd = open("/dev/smd_read", O_RDONLY);
if (fd < 0)
return -1;
rc = ioctl(fd, 0x40017301, &enabled);
close(fd);
return rc;
}
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
int main(int argc, char *argv[]) {
int fd, rc;
char enabled = 1;
fd = open("/dev/smd_read", O_RDONLY);
if (fd < 0)
return -1;
rc = ioctl(fd, 0x40017301, &enabled);
close(fd);
return rc;
}