diff options
Diffstat (limited to 'winsup/cygwin/fhandler_serial.cc')
| -rw-r--r-- | winsup/cygwin/fhandler_serial.cc | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/winsup/cygwin/fhandler_serial.cc b/winsup/cygwin/fhandler_serial.cc index 99a1b3d6b..c12d23d02 100644 --- a/winsup/cygwin/fhandler_serial.cc +++ b/winsup/cygwin/fhandler_serial.cc @@ -43,7 +43,7 @@ fhandler_serial::raw_read (void *ptr, size_t ulen) int tot; DWORD n; HANDLE w4[2]; - DWORD minchars = vmin_ ?: ulen; + size_t minchars = vmin_ ?: ulen; w4[0] = io_status.hEvent; w4[1] = signal_arrived; @@ -81,7 +81,7 @@ fhandler_serial::raw_read (void *ptr, size_t ulen) inq = st.cbInQue; else if (!overlapped_armed) { - if ((size_t)tot >= minchars) + if ((size_t) tot >= minchars) break; else if (WaitCommEvent (get_handle (), &ev, &io_status)) { @@ -388,7 +388,10 @@ fhandler_serial::ioctl (unsigned int cmd, void *buffer) DWORD ev; COMSTAT st; if (ClearCommError (get_handle (), &ev, &st)) - res = -1; + { + __seterrno (); + res = -1; + } else switch (cmd) { @@ -397,7 +400,7 @@ fhandler_serial::ioctl (unsigned int cmd, void *buffer) break; case TIOCMGET: DWORD modem_lines; - if (GetCommModemStatus (get_handle (), &modem_lines) == 0) + if (!GetCommModemStatus (get_handle (), &modem_lines)) { __seterrno (); res = -1; @@ -794,7 +797,7 @@ fhandler_serial::tcsetattr (int action, const struct termios *t) if (t->c_lflag & ICANON) { - vmin_ = MAXDWORD; + vmin_ = 0; vtime_ = 0; } else @@ -999,7 +1002,7 @@ fhandler_serial::tcgetattr (struct termios *t) t->c_oflag |= ONLCR; debug_printf ("vmin_ %d, vtime_ %d", vmin_, vtime_); - if (vmin_ == MAXDWORD) + if (vmin_ == 0) { t->c_lflag |= ICANON; t->c_cc[VTIME] = t->c_cc[VMIN] = 0; |