Support TCSETSW2 and TCSETSF2

Author: kempniu

src/record_syscall.cc

@@ -1984,6 +1984,8 @@ static Switchable prepare_ioctl(RecordTask* t,
       case IOCTL_MASK_SIZE(TUNSETVNETLE):
       case IOCTL_MASK_SIZE(TUNSETVNETBE):
       case IOCTL_MASK_SIZE(TCSETS2):
+      case IOCTL_MASK_SIZE(TCSETSW2):
+      case IOCTL_MASK_SIZE(TCSETSF2):
         return PREVENT_SWITCH;
       case IOCTL_MASK_SIZE(USBDEVFS_GETDRIVER):
         // Reads and writes its parameter despite not having the _IOC_READ bit.

src/test/ioctl_tty.c

@@ -132,6 +132,8 @@ int main(void) {
                 tc2->c_iflag, tc2->c_oflag, tc2->c_cflag, tc2->c_lflag,
                 tc2->c_ispeed, tc2->c_ospeed);
   test_assert(0 == ioctl(fd, TCSETS2, tc2));
+  test_assert(0 == ioctl(fd, TCSETSW2, tc2));
+  test_assert(0 == ioctl(fd, TCSETSF2, tc2));
 
   // NB: leaving the TCSETS2 as the last word seems to mess up the terminal,
   // so fix it.