NetBSD-5.0.2/lib/libutil/ttymsg.3

.\" $NetBSD: ttymsg.3,v 1.11 2008/04/30 13:10:52 martin Exp $
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.Dd June 29, 1997
.Dt TTYMSG 3
.Os
.Sh NAME
.Nm ttymsg
.Nd ttymsg utility function
.Sh LIBRARY
.Lb libutil
.Sh SYNOPSIS
.In util.h
.Ft char *
.Fn ttymsg "struct iovec *iov" "int iovlen" "const char *tty" "int tmout"
.Sh DESCRIPTION
The
.Fn ttymsg
function is used by
programs such as
.Xr talkd 8 ,
.Xr syslogd 8 ,
.Xr wall 1 ,
etc., to display the contents of a uio structure on a terminal.
.Fn ttymsg
forks and finishes in the child if the write would block after
waiting up to
.Fa tmout
seconds.
.Sh RETURN VALUES
.Fn ttymsg
returns a pointer to an error string on unexpected
error; the string is not newline-terminated.
Various "normal" errors are
ignored (exclusive-use, lack of permission, etc.).
.Sh SEE ALSO
.Xr writev 2