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<li class="navelem"><a class="el" href="dir_cfafba98a580ce4b62f8a6fa96d7cbb0.html">example</a></li> </ul>
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<div class="title">printcap.c File Reference</div> </div>
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<div class="textblock"><code>#include <config.h></code><br />
<code>#include <<a class="el" href="fuse__lowlevel_8h_source.html">fuse_lowlevel.h</a>></code><br />
<code>#include <stdio.h></code><br />
<code>#include <unistd.h></code><br />
<code>#include <string.h></code><br />
<code>#include <stdlib.h></code><br />
</div>
<p><a href="printcap_8c_source.html">Go to the source code of this file.</a></p>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>minimal example filesystem that prints out all capabilities supported by the kernel and then exits.</p>
<p>Compile with: </p><pre class="fragment">gcc -Wall printcap.c `pkg-config fuse3 --cflags --libs` -o printcap
</pre><h2>Source code</h2>
<div class="fragment"><div class="line"><span class="comment">/*</span></div><div class="line"><span class="comment"> FUSE: Filesystem in Userspace</span></div><div class="line"><span class="comment"> Copyright (C) 2017 Nikolaus Rath <Nikolaus@rath.org></span></div><div class="line"><span class="comment"></span></div><div class="line"><span class="comment"> This program can be distributed under the terms of the GNU GPLv2.</span></div><div class="line"><span class="comment"> See the file COPYING.</span></div><div class="line"><span class="comment">*/</span></div><div class="line"></div><div class="line"><span class="preprocessor">#define FUSE_USE_VERSION 31</span></div><div class="line"></div><div class="line"><span class="preprocessor">#include <config.h></span></div><div class="line"></div><div class="line"><span class="preprocessor">#include <<a class="code" href="fuse__lowlevel_8h.html">fuse_lowlevel.h</a>></span></div><div class="line"><span class="preprocessor">#include <stdio.h></span></div><div class="line"><span class="preprocessor">#include <unistd.h></span></div><div class="line"><span class="preprocessor">#include <string.h></span></div><div class="line"><span class="preprocessor">#include <stdlib.h></span></div><div class="line"></div><div class="line"><span class="keyword">struct </span>fuse_session *se;</div><div class="line"></div><div class="line"><span class="keyword">static</span> <span class="keywordtype">void</span> pc_init(<span class="keywordtype">void</span> *userdata,</div><div class="line"> <span class="keyword">struct</span> <a class="code" href="structfuse__conn__info.html">fuse_conn_info</a> *conn)</div><div class="line">{</div><div class="line"> (void) userdata;</div><div class="line"> </div><div class="line"> printf(<span class="stringliteral">"Protocol version: %d.%d\n"</span>, conn-><a class="code" href="structfuse__conn__info.html#a69c606abe81d16214d14ab58bad60062">proto_major</a>,</div><div class="line"> conn-><a class="code" href="structfuse__conn__info.html#a7a99196bc17f9b91622f6c1353da5f85">proto_minor</a>);</div><div class="line"> printf(<span class="stringliteral">"Capabilities:\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a4839fce31097f4b4da7a1f01169228fa">FUSE_CAP_WRITEBACK_CACHE</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_WRITEBACK_CACHE\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a4e1bacbb44d6dca9a82255c8069c3d69">FUSE_CAP_ASYNC_READ</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_ASYNC_READ\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a76f6b481e6a7c519fea9250daef6177a">FUSE_CAP_POSIX_LOCKS</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_POSIX_LOCKS\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a4c81f2838716f43fe493a61c87a62816">FUSE_CAP_ATOMIC_O_TRUNC</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_ATOMIC_O_TRUNC\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a7686c11aaf80382189927b10b848d8c8">FUSE_CAP_EXPORT_SUPPORT</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_EXPORT_SUPPORT\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a0cd4cebf7ec784886836aa061a1612fe">FUSE_CAP_DONT_MASK</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_DONT_MASK\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#aef5da823dc5f202bbe033c7a5a3de9c4">FUSE_CAP_SPLICE_MOVE</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_SPLICE_MOVE\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a2f8a51bc70841ab691660413836a9a14">FUSE_CAP_SPLICE_READ</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_SPLICE_READ\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a4f8815e0f48c60c3d9cd6e72be5a84e4">FUSE_CAP_SPLICE_WRITE</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_SPLICE_WRITE\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#afd06393448dbb60668f5a3bf0006f536">FUSE_CAP_FLOCK_LOCKS</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_FLOCK_LOCKS\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a0bfb2ecd448cb5659679df690e75581a">FUSE_CAP_IOCTL_DIR</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_IOCTL_DIR\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a2568c799f5f90ad2f0c353d48d8b8780">FUSE_CAP_AUTO_INVAL_DATA</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_AUTO_INVAL_DATA\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#ad808b93c66a58d1b4cd738af7ddcf37f">FUSE_CAP_READDIRPLUS</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_READDIRPLUS\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a9b90333ad08d0e1c2ed0134d9305ee87">FUSE_CAP_READDIRPLUS_AUTO</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_READDIRPLUS_AUTO\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#aac172aaeb6d27e2fdcafd086f9f3c0cf">FUSE_CAP_ASYNC_DIO</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_ASYNC_DIO\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a4839fce31097f4b4da7a1f01169228fa">FUSE_CAP_WRITEBACK_CACHE</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_WRITEBACK_CACHE\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#ad4477fe76f57e8b726d0357a637d7aaf">FUSE_CAP_NO_OPEN_SUPPORT</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_NO_OPEN_SUPPORT\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a3311a7f569e9fbf55b3f0bcaadbe4ad0">FUSE_CAP_PARALLEL_DIROPS</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_PARALLEL_DIROPS\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a5b3ef5b12be33295311d6b751846c263">FUSE_CAP_POSIX_ACL</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_POSIX_ACL\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a5521dfe5392929ca8e241b1d3c50cbf1">FUSE_CAP_CACHE_SYMLINKS</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_CACHE_SYMLINKS\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#aa573f7b730ea608463d8399659c38ca6">FUSE_CAP_NO_OPENDIR_SUPPORT</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_NO_OPENDIR_SUPPORT\n"</span>);</div><div class="line"> <span class="keywordflow">if</span>(conn-><a class="code" href="structfuse__conn__info.html#a8a1c61f5d7cc14249fb6971165bb958e">capable</a> & <a class="code" href="fuse__common_8h.html#a7efed2731a9d7006dd13bcf962667f1f">FUSE_CAP_EXPLICIT_INVAL_DATA</a>)</div><div class="line"> printf(<span class="stringliteral">"\tFUSE_CAP_EXPLICIT_INVAL_DATA\n"</span>);</div><div class="line"> <a class="code" href="fuse__lowlevel_8h.html#a198429f3fbc23ef29ef9971271827690">fuse_session_exit</a>(se);</div><div class="line">}</div><div class="line"></div><div class="line"></div><div class="line"><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span><a class="code" href="structfuse__lowlevel__ops.html">fuse_lowlevel_ops</a> pc_oper = {</div><div class="line"> .<a class="code" href="structfuse__lowlevel__ops.html#aa8ed20e1d06c42a386404fba0d3e56b5">init</a> = pc_init,</div><div class="line">};</div><div class="line"></div><div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)</div><div class="line">{</div><div class="line"> <span class="keyword">struct </span><a class="code" href="structfuse__args.html">fuse_args</a> args = <a class="code" href="fuse__opt_8h.html#a9bea40fe56b18be9aa110185ab7387ed">FUSE_ARGS_INIT</a>(argc, argv);</div><div class="line"> <span class="keywordtype">char</span> *mountpoint;</div><div class="line"> <span class="keywordtype">int</span> ret = -1;</div><div class="line"></div><div class="line"> mountpoint = strdup(<span class="stringliteral">"/tmp/fuse_printcap_XXXXXX"</span>);</div><div class="line"> <span class="keywordflow">if</span>(mkdtemp(mountpoint) == NULL) {</div><div class="line"> perror(<span class="stringliteral">"mkdtemp"</span>);</div><div class="line"> <span class="keywordflow">return</span> 1;</div><div class="line"> }</div><div class="line"> </div><div class="line"> printf(<span class="stringliteral">"FUSE library version %s\n"</span>, <a class="code" href="fuse__common_8h.html#ac52e27388a7c16eb509173908e5eebd0">fuse_pkgversion</a>());</div><div class="line"> <a class="code" href="fuse__lowlevel_8h.html#ac6e2d0fde62dcf4f0e57afeabeefd7b1">fuse_lowlevel_version</a>();</div><div class="line"></div><div class="line"> se = <a class="code" href="fuse__lowlevel_8h.html#a9ee52f81d0c63d9bd46b11314ba596cf">fuse_session_new</a>(&args, &pc_oper,</div><div class="line"> <span class="keyword">sizeof</span>(pc_oper), NULL);</div><div class="line"> <span class="keywordflow">if</span> (se == NULL)</div><div class="line"> <span class="keywordflow">goto</span> err_out1;</div><div class="line"></div><div class="line"> <span class="keywordflow">if</span> (<a class="code" href="fuse__common_8h.html#a292dccc3c7b1799cb054efa2ba0c774b">fuse_set_signal_handlers</a>(se) != 0)</div><div class="line"> <span class="keywordflow">goto</span> err_out2;</div><div class="line"></div><div class="line"> <span class="keywordflow">if</span> (<a class="code" href="fuse__lowlevel_8h.html#aa6d77679a110582684e9ca2da623bbc2">fuse_session_mount</a>(se, mountpoint) != 0)</div><div class="line"> <span class="keywordflow">goto</span> err_out3;</div><div class="line"></div><div class="line"> ret = <a class="code" href="fuse__lowlevel_8h.html#a5f1e538aa3287e251afbe985438c4249">fuse_session_loop</a>(se);</div><div class="line"></div><div class="line"> <a class="code" href="fuse__lowlevel_8h.html#a6c10d942751ddb214863a8b5e53de5e8">fuse_session_unmount</a>(se);</div><div class="line">err_out3:</div><div class="line"> <a class="code" href="fuse__common_8h.html#aeb674bbc11074c4fe520b952d6bfdd30">fuse_remove_signal_handlers</a>(se);</div><div class="line">err_out2:</div><div class="line"> <a class="code" href="fuse__lowlevel_8h.html#a08b5503c4e9656f9c4bc88331233cc65">fuse_session_destroy</a>(se);</div><div class="line">err_out1:</div><div class="line"> rmdir(mountpoint);</div><div class="line"> free(mountpoint);</div><div class="line"> <a class="code" href="fuse__opt_8h.html#a2cdf272429ab3869a5162976141b287d">fuse_opt_free_args</a>(&args);</div><div class="line"></div><div class="line"> <span class="keywordflow">return</span> ret ? 1 : 0;</div><div class="line">}</div></div><!-- fragment -->
<p class="definition">Definition in file <a class="el" href="printcap_8c_source.html">printcap.c</a>.</p>
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