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EIO error on background tty reads
- From: "Rafael Kitover" <caelum at debian dot org>
- To: <cygwin-patches at cygwin dot com>
- Date: Sun, 29 Jun 2003 11:41:56 -0400
- Subject: EIO error on background tty reads
While working on my port of screen for cygwin, I have tracked down the issue
that did not allow me to reattach detached screens.
A detached screen process owns a certain tty to which the new, attaching
screen process connects to and reads/writes to.
Recent builds of cygwin return an EIO on a read from the tty, the following
small change fixes this, but I have to admit that
this is my first time swimming in the bowels of cygwin itself and I don't
know if this makes sense or not.
2003-06-29 Rafael Kitover <caelum@debian.org>
* Fix EIO errors on background reads from a tty.
Index: cygwin/fhandler_termios.cc
===================================================================
RCS file: /cvs/src/src/winsup/cygwin/fhandler_termios.cc,v
retrieving revision 1.46
diff -u -p -r1.46 fhandler_termios.cc
--- cygwin/fhandler_termios.cc 16 Jun 2003 03:24:10 -0000 1.46
+++ cygwin/fhandler_termios.cc 29 Jun 2003 14:59:13 -0000
@@ -160,7 +160,7 @@ fhandler_termios::bg_check (int sig)
goto setEIO;
else if (!sigs_ignored)
/* nothing */;
- else if (sig == SIGTTOU)
+ else if (sig == SIGTTOU || sig == SIGTTIN)
return bg_ok; /* Just allow the output */
else
goto setEIO; /* This is an output error */