Date: Thu, 26 Dec 2013 18:09:46 +0400 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Eivind Evensen <eivinde@terraplane.org> Cc: freebsd-stable@freebsd.org Subject: Re: Support DISCARD (^O) Message-ID: <20131226140946.GA43173@zxy.spb.ru> In-Reply-To: <20131217211816.GA41797@klump.hjerdalen.lokalnett> References: <20131217211816.GA41797@klump.hjerdalen.lokalnett>
next in thread | previous in thread | raw e-mail | index | archive | help
On Tue, Dec 17, 2013 at 10:18:16PM +0100, Eivind Evensen wrote: > Hello. > > I don't know if there is any particular reason that support for DISCARD/^O > was not included in the tty rewrite that happened from FreeBSD 7 to 8, > but in case anybody else wants it, here's a diff functioning mostly > like in 7, except output isn't switched back on automatically on input. > > Diff is against FreeBSD 8, however, last time I checked I didn't see > much difference in the newer versions. > > Regards, Eivind Nice! Very nice feature, need to commit in the tree. > diff -r 91820d9948e0 -r 13f40d577646 sys/kern/tty_ttydisc.c > --- a/sys/kern/tty_ttydisc.c Fri Feb 22 09:45:32 2013 +0100 > +++ b/sys/kern/tty_ttydisc.c Tue Dec 17 23:03:17 2013 +0100 > @@ -448,6 +448,9 @@ > if (tp->t_flags & TF_ZOMBIE) > return (EIO); > > + if (tp->t_termios.c_lflag & FLUSHO) > + return (0); > + > /* > * We don't need to check whether the process is the foreground > * process group or if we have a carrier. This is already done > @@ -881,6 +884,14 @@ > > /* Special control characters that are implementation dependent. */ > if (CMP_FLAG(l, IEXTEN)) { > + /* Discard (^O) */ > + if (CMP_CC(VDISCARD, c)) { > + if (!(tp->t_termios.c_lflag & FLUSHO)) > + ttyoutq_write_nofrag(&tp->t_outq, "^O", 2); > + tp->t_termios.c_lflag ^= FLUSHO; > + return(0); > + } > + > /* Accept the next character as literal. */ > if (CMP_CC(VLNEXT, c)) { > if (CMP_FLAG(l, ECHO)) { > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20131226140946.GA43173>