Differential D25659 Diff 74490 head/lib/libc/gen/tcsetattr.3

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head/lib/libc/gen/tcsetattr.3

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	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT			.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF			.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	.\" SUCH DAMAGE.			.\" SUCH DAMAGE.
	.\"			.\"
	.\" @(#)tcsetattr.3 8.3 (Berkeley) 1/2/94			.\" @(#)tcsetattr.3 8.3 (Berkeley) 1/2/94
	.\" $FreeBSD$			.\" $FreeBSD$
	.\"			.\"
	.Dd January 2, 1994			.Dd July 15, 2020
	.Dt TCSETATTR 3			.Dt TCSETATTR 3
	.Os			.Os
	.Sh NAME			.Sh NAME
	.Nm cfgetispeed ,			.Nm cfgetispeed ,
	.Nm cfsetispeed ,			.Nm cfsetispeed ,
	.Nm cfgetospeed ,			.Nm cfgetospeed ,
	.Nm cfsetospeed ,			.Nm cfsetospeed ,
	.Nm cfsetspeed ,			.Nm cfsetspeed ,
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	.Pp			.Pp
	The			The
	.Fn tcsetattr			.Fn tcsetattr
	function sets the parameters associated with the terminal from the			function sets the parameters associated with the terminal from the
	termios structure referenced by			termios structure referenced by
	.Fa t .			.Fa t .
	The			The
	.Fa action			.Fa action
	argument is created by			argument is one of
	.Em or Ns 'ing
	the following values, as specified in the include file			the following values, as specified in the include file
	.In termios.h .			.In termios.h .
	.Bl -tag -width "TCSADRAIN"			.Bl -tag -width "TCSADRAIN"
	.It Fa TCSANOW			.It Fa TCSANOW
	The change occurs immediately.			The change occurs immediately.
	.It Fa TCSADRAIN			.It Fa TCSADRAIN
	The change occurs after all output written to			The change occurs after all output written to
	.Fa fd			.Fa fd
	has been transmitted to the terminal.			has been transmitted to the terminal.
	This value of			This value of
	.Fa action			.Fa action
	should be used when changing parameters that affect output.			should be used when changing parameters that affect output.
	.It Fa TCSAFLUSH			.It Fa TCSAFLUSH
	The change occurs after all output written to			The change occurs after all output written to
	.Fa fd			.Fa fd
	has been transmitted to the terminal.			has been transmitted to the terminal.
	Additionally, any input that has been received but not read is discarded.			Additionally, any input that has been received but not read is discarded.
	.It Fa TCSASOFT			.El
	If this value is			.Pp
	.Em or Ns 'ed			The
	into the
	.Fa action			.Fa action
	value, the values of the			may be modified by
				.Em or Ns 'ing
				in
				.Fa TCSASOFT
				which causes the values of the
	.Va c_cflag ,			.Va c_cflag ,
	.Va c_ispeed ,			.Va c_ispeed ,
	and			and
	.Va c_ospeed			.Va c_ospeed
	fields are ignored.			fields to be ignored.
	.El
	.Pp			.Pp
	The 0 baud rate is used to terminate the connection.			The 0 baud rate is used to terminate the connection.
	If 0 is specified as the output speed to the function			If 0 is specified as the output speed to the function
	.Fn tcsetattr ,			.Fn tcsetattr ,
	modem control will no longer be asserted on the terminal, disconnecting			modem control will no longer be asserted on the terminal, disconnecting
	the terminal.			the terminal.
	.Pp			.Pp
	If zero is specified as the input speed to the function			If zero is specified as the input speed to the function
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