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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<li class="navelem"><a class="el" href="dir_48793c1832f745235351be9ddb6033d8.html">fuse-3.13.0</a></li><li class="navelem"><a class="el" href="dir_c09fc2afa384f1b1a289f5fe67d3bf63.html">include</a></li> </ul>
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<div class="title">fuse_log.h File Reference</div> </div>
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<div class="textblock"><code>#include <stdarg.h></code><br />
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<p><a href="fuse-3_813_80_2include_2fuse__log_8h_source.html">Go to the source code of this file.</a></p>
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Typedefs</h2></td></tr>
<tr class="memitem:a76d80f5bae796dddb1d6b6a121968666"><td class="memItemLeft" align="right" valign="top">typedef void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#a76d80f5bae796dddb1d6b6a121968666">fuse_log_func_t</a>) (enum <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#ad2c3b50473593e65865abaad574bd039">fuse_log_level</a> level, const char *fmt, va_list ap)</td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:ad2c3b50473593e65865abaad574bd039"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#ad2c3b50473593e65865abaad574bd039">fuse_log_level</a> </td></tr>
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Functions</h2></td></tr>
<tr class="memitem:af19307887778edec299c02c1e858addd"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#af19307887778edec299c02c1e858addd">fuse_set_log_func</a> (<a class="el" href="include_2fuse__log_8h.html#a76d80f5bae796dddb1d6b6a121968666">fuse_log_func_t</a> func)</td></tr>
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<tr class="memitem:a4506ffd6ed3a631e01999b32b1eb8621"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#a4506ffd6ed3a631e01999b32b1eb8621">fuse_log</a> (enum <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#ad2c3b50473593e65865abaad574bd039">fuse_log_level</a> level, const char *fmt,...)</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This file defines the logging interface of FUSE </p>
<p class="definition">Definition in file <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h_source.html">fuse_log.h</a>.</p>
</div><h2 class="groupheader">Typedef Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a76d80f5bae796dddb1d6b6a121968666">◆ </a></span>fuse_log_func_t</h2>
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<td class="memname">typedef void(* fuse_log_func_t) (enum <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#ad2c3b50473593e65865abaad574bd039">fuse_log_level</a> level, const char *fmt, va_list ap)</td>
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<p>Log message handler function.</p>
<p>This function must be thread-safe. It may be called from any libfuse function, including fuse_parse_cmdline() and other functions invoked before a FUSE filesystem is created.</p>
<p>Install a custom log message handler function using <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#af19307887778edec299c02c1e858addd">fuse_set_log_func()</a>.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">level</td><td>log severity level </td></tr>
<tr><td class="paramname">fmt</td><td>sprintf-style format string including newline </td></tr>
<tr><td class="paramname">ap</td><td>format string arguments </td></tr>
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</dd>
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<p class="definition">Definition at line <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h_source.html#l00052">52</a> of file <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h_source.html">fuse_log.h</a>.</p>
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<h2 class="groupheader">Enumeration Type Documentation</h2>
<a id="ad2c3b50473593e65865abaad574bd039"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad2c3b50473593e65865abaad574bd039">◆ </a></span>fuse_log_level</h2>
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<td class="memname">enum <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#ad2c3b50473593e65865abaad574bd039">fuse_log_level</a></td>
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<p>Log severity level</p>
<p>These levels correspond to syslog(2) log levels since they are widely used. </p>
<p class="definition">Definition at line <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h_source.html#l00028">28</a> of file <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h_source.html">fuse_log.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
<a id="a4506ffd6ed3a631e01999b32b1eb8621"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4506ffd6ed3a631e01999b32b1eb8621">◆ </a></span>fuse_log()</h2>
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<td class="memname">void fuse_log </td>
<td>(</td>
<td class="paramtype">enum <a class="el" href="fuse-3_813_80_2include_2fuse__log_8h.html#ad2c3b50473593e65865abaad574bd039">fuse_log_level</a> </td>
<td class="paramname"><em>level</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>fmt</em>, </td>
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<td class="paramtype"> </td>
<td class="paramname"><em>...</em> </td>
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<td>)</td>
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<p>Emit a log message</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">level</td><td>severity level (FUSE_LOG_ERR, FUSE_LOG_DEBUG, etc) </td></tr>
<tr><td class="paramname">fmt</td><td>sprintf-style format string including newline </td></tr>
</table>
</dd>
</dl>
<p class="definition">Definition at line <a class="el" href="fuse-3_813_80_2lib_2fuse__log_8c_source.html#l00033">33</a> of file <a class="el" href="fuse-3_813_80_2lib_2fuse__log_8c_source.html">fuse_log.c</a>.</p>
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<a id="af19307887778edec299c02c1e858addd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af19307887778edec299c02c1e858addd">◆ </a></span>fuse_set_log_func()</h2>
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<td class="memname">void fuse_set_log_func </td>
<td>(</td>
<td class="paramtype"><a class="el" href="include_2fuse__log_8h.html#a76d80f5bae796dddb1d6b6a121968666">fuse_log_func_t</a> </td>
<td class="paramname"><em>func</em></td><td>)</td>
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<p>Install a custom log handler function.</p>
<p>Log messages are emitted by libfuse functions to report errors and debug information. Messages are printed to stderr by default but this can be overridden by installing a custom log message handler function.</p>
<p>The log message handler function is global and affects all FUSE filesystems created within this process.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">func</td><td>a custom log message handler function or NULL to revert to the default </td></tr>
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</dd>
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<p class="definition">Definition at line <a class="el" href="fuse-3_813_80_2lib_2fuse__log_8c_source.html#l00025">25</a> of file <a class="el" href="fuse-3_813_80_2lib_2fuse__log_8c_source.html">fuse_log.c</a>.</p>
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