public inbox for cygwin-cvs@sourceware.org
help / color / mirror / Atom feed
* [newlib-cygwin] Cygwin: serial: try fix o_nonblock
@ 2020-03-13 9:56 Corinna Vinschen
0 siblings, 0 replies; only message in thread
From: Corinna Vinschen @ 2020-03-13 9:56 UTC (permalink / raw)
To: cygwin-cvs
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=57a80207ff5f7045a45668cee827ce7f6906ccc8
commit 57a80207ff5f7045a45668cee827ce7f6906ccc8
Author: Corinna Vinschen <corinna@vinschen.de>
Date: Thu Mar 12 16:07:01 2020 +0100
Cygwin: serial: try fix o_nonblock
Diff:
---
winsup/cygwin/fhandler_serial.cc | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/winsup/cygwin/fhandler_serial.cc b/winsup/cygwin/fhandler_serial.cc
index 69e5768f6..f92fc7039 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)
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-03-13 9:56 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-03-13 9:56 [newlib-cygwin] Cygwin: serial: try fix o_nonblock Corinna Vinschen
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).