825 lines
16 KiB
HTML
825 lines
16 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 -->
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title><termios.h></title>
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</head>
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<body bgcolor="white">
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<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
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</script>
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<basefont size="3"> <a name="<termios.h>"></a> <a name="tag_13_74"></a><!-- <termios.h> -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_13_74_01"></a>NAME</h4>
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<blockquote>termios.h - define values for termios</blockquote>
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<h4><a name="tag_13_74_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<p><tt>#include <termios.h></tt></p>
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</blockquote>
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<h4><a name="tag_13_74_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>The <i><termios.h></i> header contains the definitions used by the terminal I/O interfaces (see <a href=
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"xbd_chap11.html#tag_11"><i>General Terminal Interface</i></a> for the structures and names defined).</p>
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<h5><a name="tag_13_74_03_01"></a>The termios Structure</h5>
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<p>The following data types shall be defined through <b>typedef</b>:</p>
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<dl compact>
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<dt><b>cc_t</b></dt>
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<dd>Used for terminal special characters.</dd>
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<dt><b>speed_t</b></dt>
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<dd>Used for terminal baud rates.</dd>
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<dt><b>tcflag_t</b></dt>
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<dd>Used for terminal modes.</dd>
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</dl>
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<p>The above types shall be all unsigned integer types.</p>
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<p>The implementation shall support one or more programming environments in which the widths of <b>cc_t</b>, <b>speed_t</b>, and
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<b>tcflag_t</b> are no greater than the width of type <b>long</b>. The names of these programming environments can be obtained
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using the <a href="../functions/confstr.html"><i>confstr</i>()</a> function or the <a href=
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"../utilities/getconf.html"><i>getconf</i></a> utility.</p>
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<p>The <b>termios</b> structure shall be defined, and shall include at least the following members:</p>
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<pre>
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<tt>tcflag_t c_iflag </tt> Input modes. <tt>
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tcflag_t c_oflag </tt> Output modes. <tt>
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tcflag_t c_cflag </tt> Control modes. <tt>
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tcflag_t c_lflag </tt> Local modes. <tt>
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cc_t c_cc[NCCS] </tt> Control characters. <tt>
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</tt>
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</pre>
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<p>A definition shall be provided for:</p>
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<dl compact>
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<dt>NCCS</dt>
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<dd>Size of the array <i>c_cc</i> for control characters.</dd>
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</dl>
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<p>The following subscript names for the array <i>c_cc</i> shall be defined:</p>
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<center>
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<table border="1" cellpadding="3" align="center">
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<tr valign="top">
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<th colspan="2" align="center">
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<p class="tent"><b>Subscript Usage</b></p>
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</th>
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<th align="left">
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<p class="tent"> </p>
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</th>
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</tr>
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<tr valign="top">
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<th align="center">
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<p class="tent"><b>Canonical Mode</b></p>
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</th>
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<th align="center">
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<p class="tent"><b>Non-Canonical Mode</b></p>
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</th>
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<th align="center">
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<p class="tent"><b>Description</b></p>
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</th>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VEOF</p>
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</td>
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<td align="left">
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<p class="tent"> </p>
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</td>
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<td align="left">
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<p class="tent">EOF character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VEOL</p>
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</td>
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<td align="left">
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<p class="tent"> </p>
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</td>
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<td align="left">
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<p class="tent">EOL character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VERASE</p>
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</td>
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<td align="left">
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<p class="tent"> </p>
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</td>
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<td align="left">
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<p class="tent">ERASE character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VINTR</p>
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</td>
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<td align="left">
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<p class="tent">VINTR</p>
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</td>
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<td align="left">
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<p class="tent">INTR character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VKILL</p>
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</td>
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<td align="left">
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<p class="tent"> </p>
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</td>
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<td align="left">
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<p class="tent">KILL character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent"> </p>
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</td>
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<td align="left">
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<p class="tent">VMIN</p>
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</td>
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<td align="left">
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<p class="tent">MIN value.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VQUIT</p>
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</td>
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<td align="left">
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<p class="tent">VQUIT</p>
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</td>
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<td align="left">
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<p class="tent">QUIT character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VSTART</p>
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</td>
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<td align="left">
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<p class="tent">VSTART</p>
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</td>
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<td align="left">
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<p class="tent">START character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VSTOP</p>
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</td>
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<td align="left">
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<p class="tent">VSTOP</p>
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</td>
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<td align="left">
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<p class="tent">STOP character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent">VSUSP</p>
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</td>
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<td align="left">
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<p class="tent">VSUSP</p>
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</td>
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<td align="left">
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<p class="tent">SUSP character.</p>
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</td>
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</tr>
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<tr valign="top">
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<td align="left">
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<p class="tent"> </p>
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</td>
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<td align="left">
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<p class="tent">VTIME</p>
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</td>
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<td align="left">
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<p class="tent">TIME value.</p>
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</td>
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</tr>
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</table>
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</center>
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<p>The subscript values shall be unique, except that the VMIN and VTIME subscripts may have the same values as the VEOF and VEOL
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subscripts, respectively.</p>
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<p>The following flags shall be provided.</p>
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<h5><a name="tag_13_74_03_02"></a>Input Modes</h5>
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<p>The <i>c_iflag</i> field describes the basic terminal input control:</p>
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<dl compact>
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<dt>BRKINT</dt>
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<dd>Signal interrupt on break.</dd>
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<dt>ICRNL</dt>
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<dd>Map CR to NL on input.</dd>
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<dt>IGNBRK</dt>
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<dd>Ignore break condition.</dd>
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<dt>IGNCR</dt>
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<dd>Ignore CR.</dd>
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<dt>IGNPAR</dt>
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<dd>Ignore characters with parity errors.</dd>
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<dt>INLCR</dt>
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<dd>Map NL to CR on input.</dd>
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<dt>INPCK</dt>
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<dd>Enable input parity check.</dd>
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<dt>ISTRIP</dt>
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<dd>Strip character.</dd>
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<dt>IXANY</dt>
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<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0">
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Enable any character to restart output. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>
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<dt>IXOFF</dt>
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<dd>Enable start/stop input control.</dd>
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<dt>IXON</dt>
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<dd>Enable start/stop output control.</dd>
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<dt>PARMRK</dt>
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<dd>Mark parity errors.</dd>
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</dl>
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<h5><a name="tag_13_74_03_03"></a>Output Modes</h5>
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<p>The <i>c_oflag</i> field specifies the system treatment of output:</p>
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<dl compact>
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<dt>OPOST</dt>
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<dd>Post-process output.</dd>
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<dt>ONLCR</dt>
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<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0">
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Map NL to CR-NL on output.</dd>
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<dt>OCRNL</dt>
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<dd>Map CR to NL on output.</dd>
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<dt>ONOCR</dt>
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<dd>No CR output at column 0.</dd>
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<dt>ONLRET</dt>
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<dd>NL performs CR function.</dd>
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<dt>OFILL</dt>
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<dd>Use fill characters for delay.</dd>
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<dt>NLDLY</dt>
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<dd>Select newline delays:
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<dl compact>
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<dt>NL0</dt>
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<dd>Newline type 0.</dd>
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<dt>NL1</dt>
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<dd>Newline type 1.</dd>
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</dl>
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</dd>
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<dt>CRDLY</dt>
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<dd>Select carriage-return delays:
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<dl compact>
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<dt>CR0</dt>
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<dd>Carriage-return delay type 0.</dd>
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<dt>CR1</dt>
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<dd>Carriage-return delay type 1.</dd>
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<dt>CR2</dt>
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<dd>Carriage-return delay type 2.</dd>
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<dt>CR3</dt>
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<dd>Carriage-return delay type 3.</dd>
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</dl>
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</dd>
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<dt>TABDLY</dt>
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<dd>Select horizontal-tab delays:
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<dl compact>
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<dt>TAB0</dt>
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<dd>Horizontal-tab delay type 0.</dd>
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<dt>TAB1</dt>
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<dd>Horizontal-tab delay type 1.</dd>
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<dt>TAB2</dt>
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<dd>Horizontal-tab delay type 2.</dd>
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<dt>TAB3</dt>
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<dd>Expand tabs to spaces.</dd>
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</dl>
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</dd>
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<dt>BSDLY</dt>
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<dd>Select backspace delays:
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<dl compact>
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<dt>BS0</dt>
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<dd>Backspace-delay type 0.</dd>
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<dt>BS1</dt>
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<dd>Backspace-delay type 1.</dd>
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</dl>
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</dd>
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<dt>VTDLY</dt>
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<dd>Select vertical-tab delays:
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<dl compact>
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<dt>VT0</dt>
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<dd>Vertical-tab delay type 0.</dd>
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<dt>VT1</dt>
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<dd>Vertical-tab delay type 1.</dd>
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</dl>
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</dd>
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<dt>FFDLY</dt>
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<dd>Select form-feed delays:
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<dl compact>
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<dt>FF0</dt>
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<dd>Form-feed delay type 0.</dd>
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<dt>FF1</dt>
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<dd>Form-feed delay type 1. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>
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</dl>
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</dd>
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</dl>
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<h5><a name="tag_13_74_03_04"></a>Baud Rate Selection</h5>
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<p>The input and output baud rates are stored in the <b>termios</b> structure. These are the valid values for objects of type
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<b>speed_t</b>. The following values shall be defined, but not all baud rates need be supported by the underlying hardware.</p>
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<dl compact>
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<dt>B0</dt>
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<dd>Hang up</dd>
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<dt>B50</dt>
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<dd>50 baud</dd>
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<dt>B75</dt>
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<dd>75 baud</dd>
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<dt>B110</dt>
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<dd>110 baud</dd>
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<dt>B134</dt>
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<dd>134.5 baud</dd>
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<dt>B150</dt>
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<dd>150 baud</dd>
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<dt>B200</dt>
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<dd>200 baud</dd>
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<dt>B300</dt>
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<dd>300 baud</dd>
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<dt>B600</dt>
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<dd>600 baud</dd>
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<dt>B1200</dt>
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<dd>1200 baud</dd>
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<dt>B1800</dt>
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<dd>1800 baud</dd>
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<dt>B2400</dt>
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<dd>2400 baud</dd>
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<dt>B4800</dt>
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<dd>4800 baud</dd>
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<dt>B9600</dt>
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<dd>9600 baud</dd>
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<dt>B19200</dt>
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<dd>19200 baud</dd>
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<dt>B38400</dt>
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<dd>38400 baud</dd>
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</dl>
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<h5><a name="tag_13_74_03_05"></a>Control Modes</h5>
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<p>The <i>c_cflag</i> field describes the hardware control of the terminal; not all values specified are required to be supported
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by the underlying hardware:</p>
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<dl compact>
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<dt>CSIZE</dt>
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<dd>Character size:
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<dl compact>
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<dt>CS5</dt>
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<dd>5 bits</dd>
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<dt>CS6</dt>
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<dd>6 bits</dd>
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<dt>CS7</dt>
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<dd>7 bits</dd>
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<dt>CS8</dt>
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<dd>8 bits</dd>
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</dl>
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</dd>
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<dt>CSTOPB</dt>
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<dd>Send two stop bits, else one.</dd>
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<dt>CREAD</dt>
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<dd>Enable receiver.</dd>
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<dt>PARENB</dt>
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<dd>Parity enable.</dd>
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<dt>PARODD</dt>
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<dd>Odd parity, else even.</dd>
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<dt>HUPCL</dt>
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<dd>Hang up on last close.</dd>
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<dt>CLOCAL</dt>
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<dd>Ignore modem status lines.</dd>
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</dl>
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<p>The implementation shall support the functionality associated with the symbols CS7, CS8, CSTOPB, PARODD, and PARENB.</p>
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<h5><a name="tag_13_74_03_06"></a>Local Modes</h5>
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<p>The <i>c_lflag</i> field of the argument structure is used to control various terminal functions:</p>
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<dl compact>
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<dt>ECHO</dt>
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<dd>Enable echo.</dd>
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<dt>ECHOE</dt>
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<dd>Echo erase character as error-correcting backspace.</dd>
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<dt>ECHOK</dt>
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<dd>Echo KILL.</dd>
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<dt>ECHONL</dt>
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<dd>Echo NL.</dd>
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<dt>ICANON</dt>
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|
<dd>Canonical input (erase and kill processing).</dd>
|
|
|
|
<dt>IEXTEN</dt>
|
|
|
|
<dd>Enable extended input character processing.</dd>
|
|
|
|
<dt>ISIG</dt>
|
|
|
|
<dd>Enable signals.</dd>
|
|
|
|
<dt>NOFLSH</dt>
|
|
|
|
<dd>Disable flush after interrupt or quit.</dd>
|
|
|
|
<dt>TOSTOP</dt>
|
|
|
|
<dd>Send SIGTTOU for background output.</dd>
|
|
</dl>
|
|
|
|
<h5><a name="tag_13_74_03_07"></a>Attribute Selection</h5>
|
|
|
|
<p>The following symbolic constants for use with <a href="../functions/tcsetattr.html"><i>tcsetattr</i>()</a> are defined:</p>
|
|
|
|
<dl compact>
|
|
<dt>TCSANOW</dt>
|
|
|
|
<dd>Change attributes immediately.</dd>
|
|
|
|
<dt>TCSADRAIN</dt>
|
|
|
|
<dd>Change attributes when output has drained.</dd>
|
|
|
|
<dt>TCSAFLUSH</dt>
|
|
|
|
<dd>Change attributes when output has drained; also flush pending input.</dd>
|
|
</dl>
|
|
|
|
<h5><a name="tag_13_74_03_08"></a>Line Control</h5>
|
|
|
|
<p>The following symbolic constants for use with <a href="../functions/tcflush.html"><i>tcflush</i>()</a> shall be defined:</p>
|
|
|
|
<dl compact>
|
|
<dt>TCIFLUSH</dt>
|
|
|
|
<dd>Flush pending input.</dd>
|
|
|
|
<dt>TCIOFLUSH</dt>
|
|
|
|
<dd>Flush both pending input and untransmitted output.</dd>
|
|
|
|
<dt>TCOFLUSH</dt>
|
|
|
|
<dd>Flush untransmitted output.</dd>
|
|
</dl>
|
|
|
|
<p>The following symbolic constants for use with <a href="../functions/tcflow.html"><i>tcflow</i>()</a> shall be defined:</p>
|
|
|
|
<dl compact>
|
|
<dt>TCIOFF</dt>
|
|
|
|
<dd>Transmit a STOP character, intended to suspend input data.</dd>
|
|
|
|
<dt>TCION</dt>
|
|
|
|
<dd>Transmit a START character, intended to restart input data.</dd>
|
|
|
|
<dt>TCOOFF</dt>
|
|
|
|
<dd>Suspend output.</dd>
|
|
|
|
<dt>TCOON</dt>
|
|
|
|
<dd>Restart output.</dd>
|
|
</dl>
|
|
|
|
<p>The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.</p>
|
|
|
|
<pre>
|
|
<tt>speed_t cfgetispeed(const struct termios *);
|
|
speed_t cfgetospeed(const struct termios *);
|
|
int cfsetispeed(struct termios *, speed_t);
|
|
int cfsetospeed(struct termios *, speed_t);
|
|
int tcdrain(int);
|
|
int tcflow(int, int);
|
|
int tcflush(int, int);
|
|
int tcgetattr(int, struct termios *);
|
|
<sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup><img src="../images/opt-start.gif" alt="[Option Start]" border="0">
|
|
pid_t tcgetsid(int);
|
|
<img src="../images/opt-end.gif" alt="[Option End]" border="0">
|
|
int tcsendbreak(int, int);
|
|
int tcsetattr(int, int, const struct termios *);
|
|
</tt>
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<hr>
|
|
<div class="box"><em>The following sections are informative.</em></div>
|
|
|
|
<h4><a name="tag_13_74_04"></a>APPLICATION USAGE</h4>
|
|
|
|
<blockquote>
|
|
<p>The following names are reserved for XSI-conformant systems to use as an extension to the above; therefore strictly conforming
|
|
applications shall not use them:</p>
|
|
|
|
<table cellpadding="3">
|
|
<tr valign="top">
|
|
<td align="left">
|
|
<p class="tent">CBAUD</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">EXTB</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">VDSUSP</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr valign="top">
|
|
<td align="left">
|
|
<p class="tent">DEFECHO</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">FLUSHO</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">VLNEXT</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr valign="top">
|
|
<td align="left">
|
|
<p class="tent">ECHOCTL</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">LOBLK</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">VREPRINT</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr valign="top">
|
|
<td align="left">
|
|
<p class="tent">ECHOK</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">PENDIN</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">VSTATUS</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr valign="top">
|
|
<td align="left">
|
|
<p class="tent">ECHOPRT</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">SWTCH</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">VWERASE</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr valign="top">
|
|
<td align="left">
|
|
<p class="tent">EXTA</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent">VDISCARD</p>
|
|
</td>
|
|
<td align="left">
|
|
<p class="tent"> </p>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_13_74_05"></a>RATIONALE</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_13_74_06"></a>FUTURE DIRECTIONS</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_13_74_07"></a>SEE ALSO</h4>
|
|
|
|
<blockquote>
|
|
<p>The System Interfaces volume of IEEE Std 1003.1-2001, <a href=
|
|
"../functions/cfgetispeed.html"><i>cfgetispeed</i>()</a>, <a href="../functions/cfgetospeed.html"><i>cfgetospeed</i>()</a>, <a
|
|
href="../functions/cfsetispeed.html"><i>cfsetispeed</i>()</a>, <a href="../functions/cfsetospeed.html"><i>cfsetospeed</i>()</a>, <a
|
|
href="../functions/confstr.html"><i>confstr</i>()</a>, <a href="../functions/tcdrain.html"><i>tcdrain</i>()</a>, <a href=
|
|
"../functions/tcflow.html"><i>tcflow</i>()</a>, <a href="../functions/tcflush.html"><i>tcflush</i>()</a>, <a href=
|
|
"../functions/tcgetattr.html"><i>tcgetattr</i>()</a>, <a href="../functions/tcgetsid.html"><i>tcgetsid</i>()</a>, <a href=
|
|
"../functions/tcsendbreak.html"><i>tcsendbreak</i>()</a>, <a href="../functions/tcsetattr.html"><i>tcsetattr</i>()</a>, the Shell
|
|
and Utilities volume of IEEE Std 1003.1-2001, <a href="../utilities/getconf.html"><i>getconf</i></a>, <a href=
|
|
"xbd_chap11.html#tag_11"><i>General Terminal Interface</i></a></p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_13_74_08"></a>CHANGE HISTORY</h4>
|
|
|
|
<blockquote>
|
|
<p>First released in Issue 3.</p>
|
|
|
|
<p>Included for alignment with the ISO POSIX-1 standard.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_13_74_09"></a>Issue 6</h4>
|
|
|
|
<blockquote>
|
|
<p>The LEGACY symbols IUCLC, OLCUC, and XCASE are removed.</p>
|
|
|
|
<p>FIPS 151-2 requirements for the symbols CS7, CS8, CSTOPB, PARODD, and PARENB are reaffirmed.</p>
|
|
</blockquote>
|
|
|
|
<div class="box"><em>End of informative text.</em></div>
|
|
|
|
<hr>
|
|
<hr size="2" noshade>
|
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<center><font size="2"><!--footer start-->
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UNIX ® is a registered Trademark of The Open Group.<br>
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POSIX ® is a registered Trademark of The IEEE.<br>
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