message: Handle TCSETSW and TCSETSF in ioctl
diff: @@ -12,6 +12,8 @@ pub const FIONBIO: c_ulong = 0x5421;
  pub const TCGETS: c_ulong = 0x5401;
  pub const TCSETS: c_ulong = 0x5402;
  +pub const TCSETSW: c_ulong = 0x5403;
  +pub const TCSETSF: c_ulong = 0x5404;
  pub const TCSBRK: c_ulong = 0x5409;
  pub const TCXONC: c_ulong = 0x540A;
  @@ -24,6 +26,8 @@ pub const TIOCSPGRP: c_ulong = 0x5410;
  pub const TIOCGWINSZ: c_ulong = 0x5413;
  pub const TIOCSWINSZ: c_ulong = 0x5414;
  +// TODO: some of the structs passed as T have padding bytes, so casting to a byte slice is UB
  +
  fn dup_read<T>(fd: c_int, name: &str, t: &mut T) -> syscall::Result<usize> {
  let dup = syscall::dup(fd as usize, name.as_bytes())?;
  @@ -79,7 +83,8 @@ pub unsafe extern "C" fn ioctl(fd: c_int, request: c_ulong, out: *mut c_void) ->
  0
  }
  }
  - TCSETS => {
  + // TODO: give these different behaviors
  + TCSETS | TCSETSW | TCSETSF => {
  let termios = &*(out as *const termios::termios);
  if e(dup_write(fd, "termios", termios)) == !0 {
  -1
  