1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- Copyright (C) 1988-2021 Free Software Foundation, Inc. 4 5Permission is granted to copy, distribute and/or modify this document 6under the terms of the GNU Free Documentation License, Version 1.3 or 7any later version published by the Free Software Foundation; with the 8Invariant Sections being "Free Software" and "Free Software Needs 9Free Documentation", with the Front-Cover Texts being "A GNU Manual," 10and with the Back-Cover Texts as in (a) below. 11 12(a) The FSF's Back-Cover Text is: "You are free to copy and modify 13this GNU Manual. 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In this 87case, <var>errno</var> must be sent as well, even if the call was successful. 88The <var>Ctrl-C flag</var> itself consists of the character ‘<samp>C</samp>’: 89</p> 90<div class="smallexample"> 91<pre class="smallexample">F0,0,C 92</pre></div> 93 94<p>or, if the call was interrupted before the host call has been performed: 95</p> 96<div class="smallexample"> 97<pre class="smallexample">F-1,4,C 98</pre></div> 99 100<p>assuming 4 is the protocol-specific representation of <code>EINTR</code>. 101</p> 102</dd> 103</dl> 104 105 106 107 108 109</body> 110</html> 111