cfsetispeed.3p (2706B)
- '\" et
- .TH CFSETISPEED "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
- .\"
- .SH PROLOG
- This manual page is part of the POSIX Programmer's Manual.
- The Linux implementation of this interface may differ (consult
- the corresponding Linux manual page for details of Linux behavior),
- or the interface may not be implemented on Linux.
- .\"
- .SH NAME
- cfsetispeed
- \(em set input baud rate
- .SH SYNOPSIS
- .LP
- .nf
- #include <termios.h>
- .P
- int cfsetispeed(struct termios *\fItermios_p\fP, speed_t \fIspeed\fP);
- .fi
- .SH DESCRIPTION
- The
- \fIcfsetispeed\fR()
- function shall set the input baud rate stored in the structure pointed
- to by
- .IR termios_p
- to
- .IR speed.
- .P
- There shall be no effect on the baud rates set in the hardware until a
- subsequent successful call to
- \fItcsetattr\fR()
- with the same
- .BR termios
- structure. Similarly, errors resulting from attempts to set baud rates
- not supported by the terminal device need not be detected until the
- \fItcsetattr\fR()
- function is called.
- .SH "RETURN VALUE"
- Upon successful completion,
- \fIcfsetispeed\fR()
- shall return 0; otherwise, \-1 shall be returned, and
- .IR errno
- may be set to indicate the error.
- .SH ERRORS
- The
- \fIcfsetispeed\fR()
- function may fail if:
- .TP
- .BR EINVAL
- The
- .IR speed
- value is not a valid baud rate.
- .TP
- .BR EINVAL
- The value of
- .IR speed
- is outside the range of possible speed values as specified in
- .IR <termios.h> .
- .LP
- .IR "The following sections are informative."
- .SH EXAMPLES
- None.
- .SH "APPLICATION USAGE"
- None.
- .SH RATIONALE
- Refer to
- .IR "\fIcfgetispeed\fR\^(\|)".
- .SH "FUTURE DIRECTIONS"
- None.
- .SH "SEE ALSO"
- .IR "\fIcfgetispeed\fR\^(\|)",
- .IR "\fIcfgetospeed\fR\^(\|)",
- .IR "\fIcfsetospeed\fR\^(\|)",
- .IR "\fItcsetattr\fR\^(\|)"
- .P
- The Base Definitions volume of POSIX.1\(hy2017,
- .IR "Chapter 11" ", " "General Terminal Interface",
- .IR "\fB<termios.h>\fP"
- .\"
- .SH COPYRIGHT
- Portions of this text are reprinted and reproduced in electronic form
- from IEEE Std 1003.1-2017, Standard for Information Technology
- -- Portable Operating System Interface (POSIX), The Open Group Base
- Specifications Issue 7, 2018 Edition,
- Copyright (C) 2018 by the Institute of
- Electrical and Electronics Engineers, Inc and The Open Group.
- In the event of any discrepancy between this version and the original IEEE and
- The Open Group Standard, the original IEEE and The Open Group Standard
- is the referee document. The original Standard can be obtained online at
- http://www.opengroup.org/unix/online.html .
- .PP
- Any typographical or formatting errors that appear
- in this page are most likely
- to have been introduced during the conversion of the source files to
- man page format. To report such errors, see
- https://www.kernel.org/doc/man-pages/reporting_bugs.html .