include sys/sysmacros.h from sys/types.h when _GNU_SOURCE is defined

[musl] / src / termios / tcsendbreak.c

#include <termios.h>
#include <sys/ioctl.h>

int tcsendbreak(int fd, int dur)
{
        /* nonzero duration is implementation-defined, so ignore it */
        return ioctl(fd, TCSBRK, 0);
}