Date: Thu, 1 Jul 2004 19:39:33 +0800 (CST) From: Li-Lun Wang (Leland Wang) <llwang@infor.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/68552: tip(1) does not set noncanonical mode input processing properly Message-ID: <20040701113933.3760192C2@infor.ck.tp.edu.tw> Resent-Message-ID: <200407011150.i61BoKRF010506@freefall.freebsd.org>
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>Number: 68552 >Category: bin >Synopsis: tip(1) does not set noncanonical mode input processing properly >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Jul 01 11:50:19 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Li-Lun Wang (Leland Wang) >Release: FreeBSD 4.9-RELEASE-p1 i386 >Organization: >Environment: System: FreeBSD Athena.infor.org 4.9-RELEASE-p1 FreeBSD 4.9-RELEASE-p1 #1: Wed Dec 3 02:14:02 CST 2003 root@Athena.infor.org:/home/adm/obj/usr/src/sys/Athena i386 >Description: tip(1) uses noncanonical mode input processing. However, it does not set the values of the VMIN and VTIME members of the c_cc array properly such that it fails to run within gnu screen started up detached. Running tip within screen started detached makes getchar() in tipin() receive EOF and exits immediately. >How-To-Repeat: Suppose you have a serial console called ms in /etc/remote: # screen -d -m tip ms # screen -ls # You would not find the screen started detached. >Fix: --- tip.c.orig Thu Jul 1 19:23:10 2004 +++ tip.c Thu Jul 1 19:26:07 2004 @@ -241,6 +241,8 @@ ctermios.c_cc[VINTR] = ctermios.c_cc[VQUIT] = -1; ctermios.c_cc[VSUSP] = ctermios.c_cc[VDSUSP] = ctermios.c_cc[VDISCARD] = ctermios.c_cc[VLNEXT] = -1; + ctermios.c_cc[VMIN] = 1; + ctermios.c_cc[VTIME] = 0; #else /* HAVE_TERMIOS */ ioctl(0, TIOCGETP, (char *)&defarg); ioctl(0, TIOCGETC, (char *)&defchars); >Release-Note: >Audit-Trail: >Unformatted:
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