diff options
Diffstat (limited to 'winsup/cygwin')
| -rw-r--r-- | winsup/cygwin/fhandler_serial.cc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/winsup/cygwin/fhandler_serial.cc b/winsup/cygwin/fhandler_serial.cc index 69e5768..f92fc70 100644 --- a/winsup/cygwin/fhandler_serial.cc +++ b/winsup/cygwin/fhandler_serial.cc @@ -68,6 +68,16 @@ fhandler_serial::raw_read (void *ptr, size_t& ulen) goto err; else if (ev) termios_printf ("error detected %x", ev); + else if (is_nonblocking ()) + { + if (!st.cbInQue) + { + tot = -1; + set_errno (EAGAIN); + goto out; + } + inq = st.cbInQue; + } else if (st.cbInQue && !vtime_) inq = st.cbInQue; else if (!is_nonblocking () && !overlapped_armed) |