github.com/afumu/libc@v0.0.6/musl/src/termios/tcdrain.c (about)

     1  #include <termios.h>
     2  #include <sys/ioctl.h>
     3  #include "syscall.h"
     4  
     5  int tcdrain(int fd)
     6  {
     7  	return syscall_cp(SYS_ioctl, fd, TCSBRK, 1);
     8  }