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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>Error handling</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.2.18 -->
<center>
<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="modules.html">Modules</a> <a class="qindex" href="annotated.html">Data Structures</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="functions.html">Data Fields</a> <a class="qindex" href="globals.html">Globals</a> </center>
<hr><h1>Error handling</h1>how to handle errors which might very well happen
<a href="#_details">More...</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Defines</h2></td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a5">BRLERR_SUCCESS</a> 0</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a6">BRLERR_NOMEM</a> 1</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a7">BRLERR_TTYBUSY</a> 2</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a8">BRLERR_UNKNOWN_INSTRUCTION</a> 3</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a9">BRLERR_ILLEGAL_INSTRUCTION</a> 4</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a10">BRLERR_INVALID_PARAMETER</a> 5</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a11">BRLERR_INVALID_PACKET</a> 6</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a12">BRLERR_RAWNOTSUPP</a> 7</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a13">BRLERR_KEYSNOTSUPP</a> 8</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a14">BRLERR_CONNREFUSED</a> 9</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a15">BRLERR_OPNOTSUPP</a> 10</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a16">BRLERR_GAIERR</a> 11</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a17">BRLERR_LIBCERR</a> 12</td></tr>
<tr><td nowrap align=right valign=top>#define </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a18">BRLERR_UNKNOWNTTY</a> 13</td></tr>
<tr><td colspan=2><br><h2>Functions</h2></td></tr>
<tr><td nowrap align=right valign=top>void </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a3">brlapi_perror</a> (const char *s)</td></tr>
<tr><td nowrap align=right valign=top>int * </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a4">brlapi_errno_location</a> (void)</td></tr>
<tr><td colspan=2><br><h2>Variables</h2></td></tr>
<tr><td nowrap align=right valign=top>const char * </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a0">brlapi_errlist</a> []</td></tr>
<tr><td nowrap align=right valign=top>const int </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a1">brlapi_nerr</a></td></tr>
<tr><td nowrap align=right valign=top>int </td><td valign=bottom><a class="el" href="group__brlapi__error.html#a2">brlapi_errno</a></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
<hr><h2>Define Documentation</h2>
<a name="a14" doxytag="brlapi.h::BRLERR_CONNREFUSED"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_CONNREFUSED 9
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Connection refused </td>
</tr>
</table>
<a name="a16" doxytag="brlapi.h::BRLERR_GAIERR"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_GAIERR 11
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Getaddrinfo error </td>
</tr>
</table>
<a name="a9" doxytag="brlapi.h::BRLERR_ILLEGAL_INSTRUCTION"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_ILLEGAL_INSTRUCTION 4
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Forbiden in current mode </td>
</tr>
</table>
<a name="a11" doxytag="brlapi.h::BRLERR_INVALID_PACKET"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_INVALID_PACKET 6
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Invalid size </td>
</tr>
</table>
<a name="a10" doxytag="brlapi.h::BRLERR_INVALID_PARAMETER"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_INVALID_PARAMETER 5
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Out of range or have no sense </td>
</tr>
</table>
<a name="a13" doxytag="brlapi.h::BRLERR_KEYSNOTSUPP"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_KEYSNOTSUPP 8
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Reading of key codes not supported by loaded driver </td>
</tr>
</table>
<a name="a17" doxytag="brlapi.h::BRLERR_LIBCERR"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_LIBCERR 12
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Libc error </td>
</tr>
</table>
<a name="a6" doxytag="brlapi.h::BRLERR_NOMEM"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_NOMEM 1
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Not enough memory </td>
</tr>
</table>
<a name="a15" doxytag="brlapi.h::BRLERR_OPNOTSUPP"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_OPNOTSUPP 10
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Operation not supported </td>
</tr>
</table>
<a name="a12" doxytag="brlapi.h::BRLERR_RAWNOTSUPP"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_RAWNOTSUPP 7
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Raw mode not supported by loaded driver </td>
</tr>
</table>
<a name="a5" doxytag="brlapi.h::BRLERR_SUCCESS"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_SUCCESS 0
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Success </td>
</tr>
</table>
<a name="a7" doxytag="brlapi.h::BRLERR_TTYBUSY"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_TTYBUSY 2
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Already a connection running in this tty </td>
</tr>
</table>
<a name="a8" doxytag="brlapi.h::BRLERR_UNKNOWN_INSTRUCTION"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_UNKNOWN_INSTRUCTION 3
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Not implemented in protocol </td>
</tr>
</table>
<a name="a18" doxytag="brlapi.h::BRLERR_UNKNOWNTTY"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> #define BRLERR_UNKNOWNTTY 13
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Couldn't find out the tty number </td>
</tr>
</table>
<hr><h2>Function Documentation</h2>
<a name="a4" doxytag="brlapi.h::brlapi_errno_location"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> int* brlapi_errno_location </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">void </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Get per-thread errno location
<p>
In multithreaded software, brlapi_errno is thread specific, so <a class="el" href="brlapi_8h.html">brlapi.h</a> cheats about the brlapi_errno token and actually calls <a class="el" href="group__brlapi__error.html#a4">brlapi_errno_location()</a>
<p>
This gets the thread specific location of global variable brlapi_errno </td>
</tr>
</table>
<a name="a3" doxytag="brlapi.h::brlapi_perror"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> void brlapi_perror </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname1" valign="top" nowrap> <em>s</em> </td>
<td class="md" valign="top">) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Print a BrlAPI error message
<p>
<a class="el" href="group__brlapi__error.html#a3">brlapi_perror()</a> reads brlapi_errno, and acts just like perror() </td>
</tr>
</table>
<hr><h2>Variable Documentation</h2>
<a name="a0" doxytag="brlapi.h::brlapi_errlist"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> const char* brlapi_errlist[]
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Error message list
<p>
These are the string constants used by <a class="el" href="group__brlapi__error.html#a3">brlapi_perror()</a> </td>
</tr>
</table>
<a name="a2" doxytag="brlapi.h::brlapi_errno"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> int brlapi_errno
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Global variable brlapi_errno
<p>
brlapi_errno is a global left-value containing the last error code. It is not reset to BRLERR_SUCCESS on success. </td>
</tr>
</table>
<a name="a1" doxytag="brlapi.h::brlapi_nerr"></a><p>
<table width="100%" cellpadding="2" cellspacing="0" border="0">
<tr>
<td class="md">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"> const int brlapi_nerr
</table>
</td>
</tr>
</table>
<table cellspacing=5 cellpadding=0 border=0>
<tr>
<td>
</td>
<td>
<p>
Number of error messages </td>
</tr>
</table>
<hr><address style="align: right;"><small>Generated on Thu Jan 15 13:21:28 2004 for BrlAPI by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0
width=110 height=53></a>1.2.18 </small></address>
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