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From: Peter Stephenson <pws@ibmth.df.unipi.it>
To: Drazen Kacar <dave@srce.hr>, zsh-workers@math.gatech.edu
Subject: Re: PATCH: (more) Re: PATCH: 3.1.5* & 3.0.5: Re: strange xterm & zsh behaviour
Date: Sat, 30 Jan 1999 13:51:47 +0100	[thread overview]
Message-ID: <9901301251.AA43826@ibmth.df.unipi.it> (raw)
In-Reply-To: "Peter Stephenson"'s message of "Sat, 30 Jan 1999 13:43:54 NFT." <9901301244.AA63428@ibmth.df.unipi.it>

Peter Stephenson wrote:
> You mean something like the following?  I don't quite know how to test
> for this, since you can't be assured fd 0 is /dev/tty.  Maybe the
> ioctl() on its own is enough.

sorrysorry... this time I've tested it.  (I didn't realise I could on
AIX, but TIOCNXCL does exist after all.)  This replaces the one two
minutes ago.

--- Src/init.c.tiocnxcl	Sat Jan 30 13:29:37 1999
+++ Src/init.c	Sat Jan 30 13:49:09 1999
@@ -300,6 +300,19 @@
 
     /* Make sure the tty is opened read/write. */
     if (isatty(0)) {
+#ifdef TIOCNXCL
+	/*
+	 * See if the terminal claims to be busy.  If so, and fd 0
+	 * is a terminal, try and set non-exclusive use for that.
+	 * This is something to do with Solaris over-cleverness.
+	 */
+	int tmpfd;
+	if ((tmpfd = open("/dev/tty", O_RDWR | O_NOCTTY)) < 0) {
+	    if (errno == EBUSY)
+		ioctl(0, TIOCNXCL, 0);
+	} else
+	    close(tmpfd);
+#endif
 	zsfree(ttystrname);
 	if ((ttystrname = ztrdup(ttyname(0))))
 	    SHTTY = movefd(open(ttystrname, O_RDWR | O_NOCTTY));

-- 
Peter Stephenson <pws@ibmth.df.unipi.it>       Tel: +39 050 844536
WWW:  http://www.ifh.de/~pws/
Dipartimento di Fisica, Via Buonarroti 2, 56127 Pisa, Italy



  reply	other threads:[~1999-01-30 12:51 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-01-27 22:26 Drazen Kacar
1999-01-28  5:46 ` Bart Schaefer
1999-01-28  9:38   ` Drazen Kacar
1999-01-29  3:47     ` Drazen Kacar
1999-01-29  9:16       ` PATCH: 3.1.5* & 3.0.5: " Peter Stephenson
1999-01-29 18:59         ` PATCH: (more) " Bart Schaefer
1999-01-29 19:08           ` Bart Schaefer
1999-01-30  5:54           ` Drazen Kacar
1999-01-30 12:43             ` Peter Stephenson
1999-01-30 12:51               ` Peter Stephenson [this message]
1999-01-30 18:04                 ` Bart Schaefer
1999-01-30 18:27                   ` Drazen Kacar
1999-01-30 20:41                     ` Terminal initialization and (non-)interactive shells Bart Schaefer
1999-02-01  0:50                       ` Drazen Kacar
1999-02-01  1:24                         ` Bart Schaefer
1999-02-03 11:08                   ` PATCH: 3.1.5-pws-6: ttys revisited Peter Stephenson
1999-01-30 13:29               ` PATCH: (more) Re: PATCH: 3.1.5* & 3.0.5: Re: strange xterm & zsh behaviour Drazen Kacar

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