diff options
| -rw-r--r-- | share/man/man4/tty.4 | 38 |
1 files changed, 17 insertions, 21 deletions
diff --git a/share/man/man4/tty.4 b/share/man/man4/tty.4 index a79e7aa47f2..e87ddd2ced1 100644 --- a/share/man/man4/tty.4 +++ b/share/man/man4/tty.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: tty.4,v 1.50 2018/05/01 15:16:50 anton Exp $ +.\" $OpenBSD: tty.4,v 1.51 2018/06/05 06:32:26 anton Exp $ .\" $NetBSD: tty.4,v 1.4 1996/03/19 04:26:01 paulus Exp $ .\" .\" Copyright (c) 1991, 1992, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)tty.4 8.3 (Berkeley) 4/19/94 .\" -.Dd $Mdocdate: May 1 2018 $ +.Dd $Mdocdate: June 5 2018 $ .Dt TTY 4 .Os .Sh NAME @@ -227,29 +227,25 @@ Return the current process group the terminal is associated with in the integer pointed to by .Fa tpgrp . This is the underlying call that implements the -.Xr termios 4 -.Fn tcgetpgrp +.Xr tcgetpgrp 3 call. .It Dv TIOCSPGRP Fa int *tpgrp Associate the terminal with the process group (as an integer) pointed to by .Fa tpgrp . This is the underlying call that implements the -.Xr termios 4 -.Fn tcsetpgrp +.Xr tcsetpgrp 3 call. .It Dv TIOCGETA Fa struct termios *term Place the current value of the termios state associated with the device in the termios structure pointed to by .Fa term . This is the underlying call that implements the -.Xr termios 4 -.Fn tcgetattr +.Xr tcgetattr 3 call. .It Dv TIOCSETA Fa struct termios *term Set the termios state associated with the device immediately. This is the underlying call that implements the -.Xr termios 4 -.Fn tcsetattr +.Xr tcsetattr 3 call with the .Dv TCSANOW option. @@ -257,8 +253,7 @@ option. First wait for any output to complete, then set the termios state associated with the device. This is the underlying call that implements the -.Xr termios 4 -.Fn tcsetattr +.Xr tcsetattr 3 call with the .Dv TCSADRAIN option. @@ -266,8 +261,7 @@ option. First wait for any output to complete, clear any pending input, then set the termios state associated with the device. This is the underlying call that implements the -.Xr termios 4 -.Fn tcsetattr +.Xr tcsetattr 3 call with the .Dv TCSAFLUSH option. @@ -281,10 +275,12 @@ Performs no action and returns .It Dv TIOCNOTTY Fa void This call is obsolete but left for compatibility. In the past, when a process that didn't have a controlling terminal -(see +.Po +see .Em The Controlling Terminal in -.Xr termios 4 ) +.Xr termios 4 +.Pc first opened a terminal device, it acquired that terminal as its controlling terminal. For some programs this was a hazard as they didn't want a controlling @@ -300,15 +296,15 @@ on that file descriptor. .Pp The current system does not allocate a controlling terminal to a process on an -.Fn open +.Xr open 2 call: there is a specific ioctl called .Dv TIOCSCTTY to make a terminal the controlling terminal. In addition, a program can -.Fn fork +.Xr fork 2 and call the -.Fn setsid +.Xr setsid 2 system call which will place the process into its own session - which has the effect of disassociating it from the controlling terminal. This is the new and preferred method for programs to lose their controlling @@ -385,8 +381,8 @@ If .Fa on points to a non-zero integer, redirect kernel console output .Po -kernel -.Fn printf Ns s +see +.Xr printf 9 .Pc to this terminal. If |