You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
4.7 KiB
HTML
110 lines
4.7 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2019 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" and "Free Software Needs
|
|
Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
|
|
and with the Back-Cover Texts as in (a) below.
|
|
|
|
(a) The FSF's Back-Cover Text is: "You are free to copy and modify
|
|
this GNU Manual. Buying copies from GNU Press supports the FSF in
|
|
developing GNU and promoting software freedom." -->
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>The F Reply Packet (Debugging with GDB)</title>
|
|
|
|
<meta name="description" content="The F Reply Packet (Debugging with GDB)">
|
|
<meta name="keywords" content="The F Reply Packet (Debugging with GDB)">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="File_002dI_002fO-Remote-Protocol-Extension.html#File_002dI_002fO-Remote-Protocol-Extension" rel="up" title="File-I/O Remote Protocol Extension">
|
|
<link href="The-Ctrl_002dC-Message.html#The-Ctrl_002dC-Message" rel="next" title="The Ctrl-C Message">
|
|
<link href="The-F-Request-Packet.html#The-F-Request-Packet" rel="prev" title="The F Request Packet">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.indentedblock {margin-right: 0em}
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style: oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nolinebreak {white-space: nowrap}
|
|
span.roman {font-family: initial; font-weight: normal}
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en">
|
|
<a name="The-F-Reply-Packet"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="The-Ctrl_002dC-Message.html#The-Ctrl_002dC-Message" accesskey="n" rel="next">The Ctrl-C Message</a>, Previous: <a href="The-F-Request-Packet.html#The-F-Request-Packet" accesskey="p" rel="prev">The F Request Packet</a>, Up: <a href="File_002dI_002fO-Remote-Protocol-Extension.html#File_002dI_002fO-Remote-Protocol-Extension" accesskey="u" rel="up">File-I/O Remote Protocol Extension</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
|
|
</div>
|
|
<hr>
|
|
<a name="The-F-Reply-Packet-1"></a>
|
|
<h4 class="subsection">E.13.4 The <code>F</code> Reply Packet</h4>
|
|
<a name="index-file_002di_002fo-reply-packet"></a>
|
|
<a name="index-F-reply-packet"></a>
|
|
|
|
<p>The <code>F</code> reply packet has the following format:
|
|
</p>
|
|
<dl compact="compact">
|
|
<dt>‘<samp>F<var>retcode</var>,<var>errno</var>,<var>Ctrl-C flag</var>;<var>call-specific attachment</var></samp>’</dt>
|
|
<dd>
|
|
<p><var>retcode</var> is the return code of the system call as hexadecimal value.
|
|
</p>
|
|
<p><var>errno</var> is the <code>errno</code> set by the call, in protocol-specific
|
|
representation.
|
|
This parameter can be omitted if the call was successful.
|
|
</p>
|
|
<p><var>Ctrl-C flag</var> is only sent if the user requested a break. In this
|
|
case, <var>errno</var> must be sent as well, even if the call was successful.
|
|
The <var>Ctrl-C flag</var> itself consists of the character ‘<samp>C</samp>’:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">F0,0,C
|
|
</pre></div>
|
|
|
|
<p>or, if the call was interrupted before the host call has been performed:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">F-1,4,C
|
|
</pre></div>
|
|
|
|
<p>assuming 4 is the protocol-specific representation of <code>EINTR</code>.
|
|
</p>
|
|
</dd>
|
|
</dl>
|
|
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|