| <html lang="en"> |
| <head> |
| <title>Mode Data Types - The GNU C Library</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="The GNU C Library"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Terminal-Modes.html#Terminal-Modes" title="Terminal Modes"> |
| <link rel="next" href="Mode-Functions.html#Mode-Functions" title="Mode Functions"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| This file documents the GNU C library. |
| |
| This is Edition 0.12, last updated 2007-10-27, |
| of `The GNU C Library Reference Manual', for version |
| 2.8 (Sourcery G++ Lite 2011.03-41). |
| |
| Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, |
| 2003, 2007, 2008, 2010 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being ``Free Software Needs Free Documentation'' |
| and ``GNU Lesser General Public License'', the Front-Cover texts being |
| ``A GNU Manual'', and with the Back-Cover Texts as in (a) below. A |
| copy of the license is included in the section entitled "GNU Free |
| Documentation License". |
| |
| (a) The FSF's Back-Cover Text is: ``You have the freedom to |
| copy and modify this GNU manual. Buying copies from the FSF |
| supports it in developing GNU and promoting software freedom.''--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Mode-Data-Types"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="Mode-Functions.html#Mode-Functions">Mode Functions</a>, |
| Up: <a rel="up" accesskey="u" href="Terminal-Modes.html#Terminal-Modes">Terminal Modes</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">17.4.1 Terminal Mode Data Types</h4> |
| |
| <p><a name="index-terminal-mode-data-types-1857"></a> |
| The entire collection of attributes of a terminal is stored in a |
| structure of type <code>struct termios</code>. This structure is used |
| with the functions <code>tcgetattr</code> and <code>tcsetattr</code> to read |
| and set the attributes. |
| |
| <!-- termios.h --> |
| <!-- POSIX.1 --> |
| <div class="defun"> |
| — Data Type: <b>struct termios</b><var><a name="index-struct-termios-1858"></a></var><br> |
| <blockquote><p>Structure that records all the I/O attributes of a terminal. The |
| structure includes at least the following members: |
| |
| <dl> |
| <dt><code>tcflag_t c_iflag</code><dd>A bit mask specifying flags for input modes; see <a href="Input-Modes.html#Input-Modes">Input Modes</a>. |
| |
| <br><dt><code>tcflag_t c_oflag</code><dd>A bit mask specifying flags for output modes; see <a href="Output-Modes.html#Output-Modes">Output Modes</a>. |
| |
| <br><dt><code>tcflag_t c_cflag</code><dd>A bit mask specifying flags for control modes; see <a href="Control-Modes.html#Control-Modes">Control Modes</a>. |
| |
| <br><dt><code>tcflag_t c_lflag</code><dd>A bit mask specifying flags for local modes; see <a href="Local-Modes.html#Local-Modes">Local Modes</a>. |
| |
| <br><dt><code>cc_t c_cc[NCCS]</code><dd>An array specifying which characters are associated with various |
| control functions; see <a href="Special-Characters.html#Special-Characters">Special Characters</a>. |
| </dl> |
| |
| <p>The <code>struct termios</code> structure also contains members which |
| encode input and output transmission speeds, but the representation is |
| not specified. See <a href="Line-Speed.html#Line-Speed">Line Speed</a>, for how to examine and store the |
| speed values. |
| </p></blockquote></div> |
| |
| <p>The following sections describe the details of the members of the |
| <code>struct termios</code> structure. |
| |
| <!-- termios.h --> |
| <!-- POSIX.1 --> |
| <div class="defun"> |
| — Data Type: <b>tcflag_t</b><var><a name="index-tcflag_005ft-1859"></a></var><br> |
| <blockquote><p>This is an unsigned integer type used to represent the various |
| bit masks for terminal flags. |
| </p></blockquote></div> |
| |
| <!-- termios.h --> |
| <!-- POSIX.1 --> |
| <div class="defun"> |
| — Data Type: <b>cc_t</b><var><a name="index-cc_005ft-1860"></a></var><br> |
| <blockquote><p>This is an unsigned integer type used to represent characters associated |
| with various terminal control functions. |
| </p></blockquote></div> |
| |
| <!-- termios.h --> |
| <!-- POSIX.1 --> |
| <div class="defun"> |
| — Macro: int <b>NCCS</b><var><a name="index-NCCS-1861"></a></var><br> |
| <blockquote><p>The value of this macro is the number of elements in the <code>c_cc</code> |
| array. |
| </p></blockquote></div> |
| |
| </body></html> |
| |
