diff options
Diffstat (limited to 'winsup/cygwin/fhandler_console.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_console.cc | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/winsup/cygwin/fhandler_console.cc b/winsup/cygwin/fhandler_console.cc index 4d2810203..5375721a1 100644 --- a/winsup/cygwin/fhandler_console.cc +++ b/winsup/cygwin/fhandler_console.cc @@ -892,13 +892,21 @@ fhandler_console::ioctl (unsigned int cmd, void *buf) return -1; case FIONREAD: { + /* Per MSDN, max size of buffer required is below 64K. */ +#define INREC_SIZE (65536 / sizeof (INPUT_RECORD)) + DWORD n; - if (!GetNumberOfConsoleInputEvents (get_io_handle (), &n)) + int ret = 0; + INPUT_RECORD inp[INREC_SIZE]; + if (!PeekConsoleInputW (get_io_handle (), inp, INREC_SIZE, &n)) { - __seterrno (); + set_errno (EINVAL); return -1; } - *(int *) buf = (int) n; + while (n-- > 0) + if (inp[n].EventType == KEY_EVENT && inp[n].Event.KeyEvent.bKeyDown) + ++ret; + *(int *) buf = ret; return 0; } break; |