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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> CUSE: Character device in Userspace</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> Copyright (C) 2008-2009 SUSE Linux Products GmbH</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Copyright (C) 2008-2009 Tejun Heo <tj@kernel.org></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> This program can be distributed under the terms of the GNU LGPLv2.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> See the file COPYING.LIB.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"></span> </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> Read example/cusexmp.c for usages.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#ifndef CUSE_LOWLEVEL_H_</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#define CUSE_LOWLEVEL_H_</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#ifndef FUSE_USE_VERSION</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#define FUSE_USE_VERSION 29</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "<a class="code" href="fuse__lowlevel_8h.html">fuse_lowlevel.h</a>"</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <fcntl.h></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <sys/types.h></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include <sys/uio.h></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#define CUSE_UNRESTRICTED_IOCTL (1 << 0) </span><span class="comment">/* use unrestricted ioctl */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="keyword">struct </span>fuse_session;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">struct </span>cuse_info {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordtype">unsigned</span> dev_major;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">unsigned</span> dev_minor;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">unsigned</span> dev_info_argc;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> **dev_info_argv;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">unsigned</span> flags;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> };</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * Most ops behave almost identically to the matching fuse_lowlevel</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * ops except that they don't take @ino.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * init_done : called after initialization is complete</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * read/write : always direct IO, simultaneous operations allowed</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * ioctl : might be in unrestricted mode depending on ci->flags</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">struct </span>cuse_lowlevel_ops {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  void (*init) (<span class="keywordtype">void</span> *userdata, <span class="keyword">struct </span><a class="code" href="structfuse__conn__info.html">fuse_conn_info</a> *conn);</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  void (*init_done) (<span class="keywordtype">void</span> *userdata);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  void (*destroy) (<span class="keywordtype">void</span> *userdata);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  void (*open) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  void (*read) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keywordtype">size_t</span> size, off_t off,</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  void (*write) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keyword">const</span> <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> size, off_t off,</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  void (*<a class="code" href="structfuse__file__info.html#a9c1571cb4b6be75827f48aac5891606c">flush</a>) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  void (*release) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi);</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  void (*fsync) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keywordtype">int</span> datasync, <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  void (*ioctl) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keywordtype">int</span> cmd, <span class="keywordtype">void</span> *arg,</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structfuse__file__info.html#ae7d31802727be19670193a411647bca5">flags</a>,</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">const</span> <span class="keywordtype">void</span> *in_buf, <span class="keywordtype">size_t</span> in_bufsz, <span class="keywordtype">size_t</span> out_bufsz);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  void (*poll) (<a class="code" href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a> req, <span class="keyword">struct </span><a class="code" href="structfuse__file__info.html">fuse_file_info</a> *fi,</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">struct </span>fuse_pollhandle *ph);</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> };</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">struct </span>fuse_session *cuse_lowlevel_new(<span class="keyword">struct</span> <a class="code" href="structfuse__args.html">fuse_args</a> *args,</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">const</span> <span class="keyword">struct</span> cuse_info *ci,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">const</span> <span class="keyword">struct</span> cuse_lowlevel_ops *clop,</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">void</span> *userdata);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">struct </span>fuse_session *cuse_lowlevel_setup(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[],</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">const</span> <span class="keyword">struct</span> cuse_info *ci,</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">const</span> <span class="keyword">struct</span> cuse_lowlevel_ops *clop,</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">int</span> *multithreaded, <span class="keywordtype">void</span> *userdata);</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keywordtype">void</span> cuse_lowlevel_teardown(<span class="keyword">struct</span> fuse_session *se);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keywordtype">int</span> cuse_lowlevel_main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> *argv[], <span class="keyword">const</span> <span class="keyword">struct</span> cuse_info *ci,</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <span class="keyword">struct</span> cuse_lowlevel_ops *clop, <span class="keywordtype">void</span> *userdata);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor">#endif </span><span class="comment">/* CUSE_LOWLEVEL_H_ */</span><span class="preprocessor"></span></div>
<div class="ttc" id="afuse__lowlevel_8h_html"><div class="ttname"><a href="fuse__lowlevel_8h.html">fuse_lowlevel.h</a></div></div>
<div class="ttc" id="afuse__lowlevel_8h_html_a33e2aa4a8905a05397292ae047cd2257"><div class="ttname"><a href="fuse__lowlevel_8h.html#a33e2aa4a8905a05397292ae047cd2257">fuse_req_t</a></div><div class="ttdeci">struct fuse_req * fuse_req_t</div><div class="ttdef"><b>Definition:</b> <a href="fuse__lowlevel_8h_source.html#l00049">fuse_lowlevel.h:49</a></div></div>
<div class="ttc" id="astructfuse__args_html"><div class="ttname"><a href="structfuse__args.html">fuse_args</a></div><div class="ttdef"><b>Definition:</b> <a href="fuse__opt_8h_source.html#l00109">fuse_opt.h:109</a></div></div>
<div class="ttc" id="astructfuse__conn__info_html"><div class="ttname"><a href="structfuse__conn__info.html">fuse_conn_info</a></div><div class="ttdef"><b>Definition:</b> <a href="fuse__common_8h_source.html#l00451">fuse_common.h:451</a></div></div>
<div class="ttc" id="astructfuse__file__info_html"><div class="ttname"><a href="structfuse__file__info.html">fuse_file_info</a></div><div class="ttdef"><b>Definition:</b> <a href="fuse__common_8h_source.html#l00044">fuse_common.h:44</a></div></div>
<div class="ttc" id="astructfuse__file__info_html_a9c1571cb4b6be75827f48aac5891606c"><div class="ttname"><a href="structfuse__file__info.html#a9c1571cb4b6be75827f48aac5891606c">fuse_file_info::flush</a></div><div class="ttdeci">unsigned int flush</div><div class="ttdef"><b>Definition:</b> <a href="fuse__common_8h_source.html#l00069">fuse_common.h:69</a></div></div>
<div class="ttc" id="astructfuse__file__info_html_ae7d31802727be19670193a411647bca5"><div class="ttname"><a href="structfuse__file__info.html#ae7d31802727be19670193a411647bca5">fuse_file_info::flags</a></div><div class="ttdeci">int flags</div><div class="ttdef"><b>Definition:</b> <a href="fuse__common_8h_source.html#l00046">fuse_common.h:46</a></div></div>
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