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 <span id="projectnumber">2.0</span>
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<div class="title">namei.c</div> </div>
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<a href="namei_8c.html">Go to the documentation of this file.</a><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"> * Copyright (c) 2002-2018 The UbixOS Project.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This was developed by Christopher W. Olsen for the UbixOS Project.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification, are permitted</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * provided that the following conditions are met:</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 1) Redistributions of source code must retain the above copyright notice, this list of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * conditions, the following disclaimer and the list of authors.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * 2) Redistributions in binary form must reproduce the above copyright notice, this list of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * conditions, the following disclaimer and the list of authors in the documentation and/or</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * other materials provided with the distribution.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 3) Neither the name of the UbixOS Project nor the names of its contributors may be used to</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * endorse or promote products derived from this software without specific prior written</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * permission.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</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">#include <<a class="code" href="include_2sys_2types_8h.html">sys/types.h</a>></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="ubixos_2errno_8h.html">ubixos/errno.h</a>></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="include_2vfs_2vfs_8h.html">vfs/vfs.h</a>></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="sched_8h.html">ubixos/sched.h</a>></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="namei_8c.html#adf0c5ab136108b2606b8baba7e12abbe"> 34</a></span> <span class="keywordtype">int</span> <a class="code" href="namei_8c.html#adf0c5ab136108b2606b8baba7e12abbe">follow_link</a>(<span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> * dir, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> * <a class="code" href="structinode.html">inode</a>, <span class="keywordtype">int</span> flag, <span class="keywordtype">int</span> mode, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> ** res_inode) {</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">if</span> (!dir || !<a class="code" href="structinode.html">inode</a>) {</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(dir);</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(<a class="code" href="structinode.html">inode</a>);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  *res_inode = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">return</span> -<a class="code" href="sys_2errno_8h.html#a03e689f378f643d16ea7537918528a48">ENOENT</a>;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  }</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (!<a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a> || !<a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#aa35664261988a830d4bffcbf13743684">follow_link</a>) {</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(dir);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  *res_inode = <a class="code" href="structinode.html">inode</a>;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> <a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#aa35664261988a830d4bffcbf13743684">follow_link</a>(dir, <a class="code" href="structinode.html">inode</a>, flag, mode, res_inode);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> }</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="namei_8c.html#a441ab26a551f04aa4901a4b2c6b9d71a"> 52</a></span> <span class="keywordtype">int</span> <a class="code" href="namei_8c.html#a441ab26a551f04aa4901a4b2c6b9d71a">permission</a>(<span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> * <a class="code" href="structinode.html">inode</a>, <span class="keywordtype">int</span> mask) {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">int</span> mode = <a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#aceb810156528818f5f17fd1918d58456">i_mode</a>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (<a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a> && <a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#a9498ad8187220a0751acc29b725f1fe3">permission</a>)</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> <a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#a9498ad8187220a0751acc29b725f1fe3">permission</a>(<a class="code" href="structinode.html">inode</a>, mask);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="structtaskStruct.html#a5978d69d1b59cc1b731c8a0bf51cf4d8">euid</a> == <a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a9661c7379438c25c6cc91c3239f54a85">i_uid</a>)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  mode >>= 6;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="access_8c.html#a0e5f21be079a3e8f83618c8c6e062c5a">in_group_p</a>(<a class="code" href="structinode.html">inode</a>-><a class="code" href="structinode.html#a0c14ee3e0c6392287359562051162885">i_gid</a>))</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  mode >>= 3;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (((mode & mask & 0007) == mask)) <span class="comment">// || suser())</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> 0;</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"><a class="line" href="namei_8c.html#ad77c16b56493b15a0ffa0f3aedbffb71"> 68</a></span> <span class="keywordtype">int</span> <a class="code" href="namei_8c.html#ad77c16b56493b15a0ffa0f3aedbffb71">lookup</a>(<span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> * dir, <span class="keyword">const</span> <span class="keywordtype">char</span> * <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <span class="keywordtype">int</span> len, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> ** result) {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">struct </span><a class="code" href="structsuper__block.html">super_block</a> * sb;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">int</span> perm;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  *result = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">if</span> (!dir)</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">return</span> -<a class="code" href="sys_2errno_8h.html#a03e689f378f643d16ea7537918528a48">ENOENT</a>;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">/* check permissions before traversing mount-points */</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  perm = <a class="code" href="namei_8c.html#a441ab26a551f04aa4901a4b2c6b9d71a">permission</a>(dir, <a class="code" href="include_2vfs_2vfs_8h.html#a62208fd94f08131f925ce4211733feba">MAY_EXEC</a>);</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="keywordflow">if</span> (len == 2 && <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>[0] == <span class="charliteral">'.'</span> && <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>[1] == <span class="charliteral">'.'</span>) {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  </div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#ifdef _IGNORE</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">if</span> (dir == <a class="code" href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="structtaskStruct.html#aa3610b89866c904ca5531b91ae17c875">root</a>) {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  *result = dir;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> 0;</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="keywordflow">else</span> <span class="keywordflow">if</span> ((sb = dir-><a class="code" href="structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>) && (dir == sb-><a class="code" href="structsuper__block.html#ab512ca6a0a83eecffe89740646927228">s_mounted</a>)) {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  sb = dir-><a class="code" href="structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(dir);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  dir = sb-><a class="code" href="structsuper__block.html#a161369fc3cb8cda6c26818b9642508f6">s_covered</a>;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (!dir)</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">return</span> -<a class="code" href="sys_2errno_8h.html#a03e689f378f643d16ea7537918528a48">ENOENT</a>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  dir-><a class="code" href="structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>++;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (!dir-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a> || !dir-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#ae2d0cd46daad5f8edbbc6bf272f5f6ef">lookup</a>) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(dir);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> -<a class="code" href="sys_2errno_8h.html#a9262fb92f7ef662d0bdd577912a5b101">ENOTDIR</a>;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (!perm) {</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(dir);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> -<a class="code" href="sys_2errno_8h.html#ac2a2e9fa555401f94478f74e01868032">EACCES</a>;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">if</span> (!len) {</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  *result = dir;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> dir-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#ae2d0cd46daad5f8edbbc6bf272f5f6ef">lookup</a>(dir, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, len, result);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> }</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="keyword">static</span> <span class="keywordtype">int</span> dir_namei(<span class="keyword">const</span> <span class="keywordtype">char</span> * pathname, <span class="keywordtype">int</span> * namelen, <span class="keyword">const</span> <span class="keywordtype">char</span> ** <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> * base, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> ** res_inode) {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordtype">char</span> c;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *thisname;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">int</span> len;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordtype">int</span> error;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keyword">struct </span><a class="code" href="structinode.html">inode</a> *<a class="code" href="structinode.html">inode</a>;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  *res_inode = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#ifdef _IGNORE</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">if</span> (!base) {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  base = <a class="code" href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="structtaskStruct.html#af4443906fe46d7ba14818177943ac02f">pwd</a>;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  base-><a class="code" href="structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>++;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">if</span> (!base) {</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <a class="code" href="kprintf_8h.html#a20b56810edb62a6fe59917015c30848f">kprintf</a>(<span class="stringliteral">"BASE == NULL"</span>);</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> ((c = *pathname) == <span class="charliteral">'/'</span>) {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(base);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#ifdef _IGNORE</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  base = <a class="code" href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="structtaskStruct.html#aa3610b89866c904ca5531b91ae17c875">root</a>;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  pathname++;</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  base-><a class="code" href="structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>++;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordflow">while</span> (1) {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  thisname = pathname;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">for</span> (len = 0; (c = *(pathname++)) && (c != <span class="charliteral">'/'</span>); len++)</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">/* nothing */</span>;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">if</span> (!c)</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  base-><a class="code" href="structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>++;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  error = <a class="code" href="namei_8c.html#ad77c16b56493b15a0ffa0f3aedbffb71">lookup</a>(base, thisname, len, &<a class="code" href="structinode.html">inode</a>);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (error) {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(base);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">return</span> error;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  error = <a class="code" href="namei_8c.html#adf0c5ab136108b2606b8baba7e12abbe">follow_link</a>(base, <a class="code" href="structinode.html">inode</a>, 0, 0, &base);</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span> (error)</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> error;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> (!base-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a> || !base-><a class="code" href="structinode.html#a141e71619963d0d497eca9952e74b705">i_op</a>-><a class="code" href="structinode__operations.html#ae2d0cd46daad5f8edbbc6bf272f5f6ef">lookup</a>) {</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(base);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">return</span> -<a class="code" href="sys_2errno_8h.html#a9262fb92f7ef662d0bdd577912a5b101">ENOTDIR</a>;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a> = thisname;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  *namelen = len;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  *res_inode = base;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
<div class="line"><a name="l00172"></a><span class="lineno"><a class="line" href="namei_8c.html#a9c6a1c44b765a6d5c2b1b1d45485f905"> 172</a></span> <span class="keywordtype">int</span> <a class="code" href="namei_8c.html#a9c6a1c44b765a6d5c2b1b1d45485f905">namei</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> * pathname, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> * base, <span class="keywordtype">int</span> follow_links, <span class="keyword">struct</span> <a class="code" href="structinode.html">inode</a> ** res_inode) {</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *basename;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordtype">int</span> namelen, error;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">struct </span><a class="code" href="structinode.html">inode</a> *<a class="code" href="structinode.html">inode</a>;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  *res_inode = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  error = dir_namei(pathname, &namelen, &basename, base, &base);</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span> (error)</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">return</span> error;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  base-><a class="code" href="structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>++; <span class="comment">/* lookup uses up base */</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  error = <a class="code" href="namei_8c.html#ad77c16b56493b15a0ffa0f3aedbffb71">lookup</a>(base, basename, namelen, &<a class="code" href="structinode.html">inode</a>);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">if</span> (error) {</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(base);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">return</span> error;</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">if</span> (follow_links) {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  error = <a class="code" href="namei_8c.html#adf0c5ab136108b2606b8baba7e12abbe">follow_link</a>(base, <a class="code" href="structinode.html">inode</a>, 0, 0, &<a class="code" href="structinode.html">inode</a>);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (error)</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">return</span> error;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(base);</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  *res_inode = <a class="code" href="structinode.html">inode</a>;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> }</div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="ainode_8c_html_a378733dcbf0fb08359b9a02145ac8fc3"><div class="ttname"><a href="inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a></div><div class="ttdeci">void iput(struct inode *inode)</div><div class="ttdef"><b>Definition:</b> <a href="inode_8c_source.html#l00047">inode.c:47</a></div></div>
<div class="ttc" id="astructinode_html_a8e3ca37fd8f709720380afd9f60d0e71"><div class="ttname"><a href="structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">inode::i_sb</a></div><div class="ttdeci">struct super_block * i_sb</div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00055">inode.h:55</a></div></div>
<div class="ttc" id="astructtaskStruct_html_a5978d69d1b59cc1b731c8a0bf51cf4d8"><div class="ttname"><a href="structtaskStruct.html#a5978d69d1b59cc1b731c8a0bf51cf4d8">taskStruct::euid</a></div><div class="ttdeci">uint16_t euid</div><div class="ttdef"><b>Definition:</b> <a href="sched_8h_source.html#l00074">sched.h:74</a></div></div>
<div class="ttc" id="astructinode_html_a9661c7379438c25c6cc91c3239f54a85"><div class="ttname"><a href="structinode.html#a9661c7379438c25c6cc91c3239f54a85">inode::i_uid</a></div><div class="ttdeci">uid_t i_uid</div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00044">inode.h:44</a></div></div>
<div class="ttc" id="ainclude_2vfs_2vfs_8h_html"><div class="ttname"><a href="include_2vfs_2vfs_8h.html">vfs.h</a></div></div>
<div class="ttc" id="anamei_8c_html_ad77c16b56493b15a0ffa0f3aedbffb71"><div class="ttname"><a href="namei_8c.html#ad77c16b56493b15a0ffa0f3aedbffb71">lookup</a></div><div class="ttdeci">int lookup(struct inode *dir, const char *name, int len, struct inode **result)</div><div class="ttdef"><b>Definition:</b> <a href="namei_8c_source.html#l00068">namei.c:68</a></div></div>
<div class="ttc" id="astructsuper__block_html"><div class="ttname"><a href="structsuper__block.html">super_block</a></div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00107">vfs.h:107</a></div></div>
<div class="ttc" id="astructinode_html_af6da47fa3f89db802bc7039589bbe982"><div class="ttname"><a href="structinode.html#af6da47fa3f89db802bc7039589bbe982">inode::i_count</a></div><div class="ttdeci">unsigned short i_count</div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00064">inode.h:64</a></div></div>
<div class="ttc" id="astructinode_html_a0c14ee3e0c6392287359562051162885"><div class="ttname"><a href="structinode.html#a0c14ee3e0c6392287359562051162885">inode::i_gid</a></div><div class="ttdeci">gid_t i_gid</div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00045">inode.h:45</a></div></div>
<div class="ttc" id="asched_8h_html"><div class="ttname"><a href="sched_8h.html">sched.h</a></div></div>
<div class="ttc" id="ainclude_2sys_2types_8h_html"><div class="ttname"><a href="include_2sys_2types_8h.html">types.h</a></div></div>
<div class="ttc" id="asys_2errno_8h_html_a9262fb92f7ef662d0bdd577912a5b101"><div class="ttname"><a href="sys_2errno_8h.html#a9262fb92f7ef662d0bdd577912a5b101">ENOTDIR</a></div><div class="ttdeci">#define ENOTDIR</div><div class="ttdef"><b>Definition:</b> <a href="sys_2errno_8h_source.html#l00053">errno.h:53</a></div></div>
<div class="ttc" id="astructinode_html"><div class="ttname"><a href="structinode.html">inode</a></div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00039">inode.h:39</a></div></div>
<div class="ttc" id="astructinode__operations_html_aa35664261988a830d4bffcbf13743684"><div class="ttname"><a href="structinode__operations.html#aa35664261988a830d4bffcbf13743684">inode_operations::follow_link</a></div><div class="ttdeci">int(* follow_link)(struct inode *, struct inode *, int, int, struct inode **)</div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00085">vfs.h:85</a></div></div>
<div class="ttc" id="anamei_8c_html_adf0c5ab136108b2606b8baba7e12abbe"><div class="ttname"><a href="namei_8c.html#adf0c5ab136108b2606b8baba7e12abbe">follow_link</a></div><div class="ttdeci">int follow_link(struct inode *dir, struct inode *inode, int flag, int mode, struct inode **res_inode)</div><div class="ttdef"><b>Definition:</b> <a href="namei_8c_source.html#l00034">namei.c:34</a></div></div>
<div class="ttc" id="astructsuper__block_html_a161369fc3cb8cda6c26818b9642508f6"><div class="ttname"><a href="structsuper__block.html#a161369fc3cb8cda6c26818b9642508f6">super_block::s_covered</a></div><div class="ttdeci">struct inode * s_covered</div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00118">vfs.h:118</a></div></div>
<div class="ttc" id="aarmv6_2sched_8c_html_a54397bfe18d5da4d50ff03b15f540858"><div class="ttname"><a href="armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a></div><div class="ttdeci">kTask_t * _current</div><div class="ttdef"><b>Definition:</b> <a href="armv6_2sched_8c_source.html#l00050">sched.c:50</a></div></div>
<div class="ttc" id="apci_8c_html_a8f8f80d37794cde9472343e4487ba3eb"><div class="ttname"><a href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a></div><div class="ttdeci">const char * name</div><div class="ttdef"><b>Definition:</b> <a href="pci_8c_source.html#l00037">pci.c:37</a></div></div>
<div class="ttc" id="astructinode__operations_html_a9498ad8187220a0751acc29b725f1fe3"><div class="ttname"><a href="structinode__operations.html#a9498ad8187220a0751acc29b725f1fe3">inode_operations::permission</a></div><div class="ttdeci">int(* permission)(struct inode *, int)</div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00088">vfs.h:88</a></div></div>
<div class="ttc" id="astructinode_html_aceb810156528818f5f17fd1918d58456"><div class="ttname"><a href="structinode.html#aceb810156528818f5f17fd1918d58456">inode::i_mode</a></div><div class="ttdeci">__mode_t i_mode</div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00042">inode.h:42</a></div></div>
<div class="ttc" id="astructinode__operations_html_ae2d0cd46daad5f8edbbc6bf272f5f6ef"><div class="ttname"><a href="structinode__operations.html#ae2d0cd46daad5f8edbbc6bf272f5f6ef">inode_operations::lookup</a></div><div class="ttdeci">int(* lookup)(struct inode *, const char *, int, struct inode **)</div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00076">vfs.h:76</a></div></div>
<div class="ttc" id="astructtaskStruct_html_af4443906fe46d7ba14818177943ac02f"><div class="ttname"><a href="structtaskStruct.html#af4443906fe46d7ba14818177943ac02f">taskStruct::pwd</a></div><div class="ttdeci">struct inode * pwd</div><div class="ttdef"><b>Definition:</b> <a href="sched_8h_source.html#l00080">sched.h:80</a></div></div>
<div class="ttc" id="astructinode_html_a141e71619963d0d497eca9952e74b705"><div class="ttname"><a href="structinode.html#a141e71619963d0d497eca9952e74b705">inode::i_op</a></div><div class="ttdeci">struct inode_operations * i_op</div><div class="ttdef"><b>Definition:</b> <a href="inode_8h_source.html#l00054">inode.h:54</a></div></div>
<div class="ttc" id="asys_2errno_8h_html_a03e689f378f643d16ea7537918528a48"><div class="ttname"><a href="sys_2errno_8h.html#a03e689f378f643d16ea7537918528a48">ENOENT</a></div><div class="ttdeci">#define ENOENT</div><div class="ttdef"><b>Definition:</b> <a href="sys_2errno_8h_source.html#l00033">errno.h:33</a></div></div>
<div class="ttc" id="astructtaskStruct_html_aa3610b89866c904ca5531b91ae17c875"><div class="ttname"><a href="structtaskStruct.html#aa3610b89866c904ca5531b91ae17c875">taskStruct::root</a></div><div class="ttdeci">struct inode * root</div><div class="ttdef"><b>Definition:</b> <a href="sched_8h_source.html#l00081">sched.h:81</a></div></div>
<div class="ttc" id="ainclude_2vfs_2vfs_8h_html_a62208fd94f08131f925ce4211733feba"><div class="ttname"><a href="include_2vfs_2vfs_8h.html#a62208fd94f08131f925ce4211733feba">MAY_EXEC</a></div><div class="ttdeci">#define MAY_EXEC</div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00039">vfs.h:39</a></div></div>
<div class="ttc" id="akprintf_8h_html_a20b56810edb62a6fe59917015c30848f"><div class="ttname"><a href="kprintf_8h.html#a20b56810edb62a6fe59917015c30848f">kprintf</a></div><div class="ttdeci">int kprintf(const char *,...)</div><div class="ttdef"><b>Definition:</b> <a href="kprintf_8c_source.html#l00259">kprintf.c:259</a></div></div>
<div class="ttc" id="aubixos_2errno_8h_html"><div class="ttname"><a href="ubixos_2errno_8h.html">errno.h</a></div></div>
<div class="ttc" id="anamei_8c_html_a9c6a1c44b765a6d5c2b1b1d45485f905"><div class="ttname"><a href="namei_8c.html#a9c6a1c44b765a6d5c2b1b1d45485f905">namei</a></div><div class="ttdeci">int namei(const char *pathname, struct inode *base, int follow_links, struct inode **res_inode)</div><div class="ttdef"><b>Definition:</b> <a href="namei_8c_source.html#l00172">namei.c:172</a></div></div>
<div class="ttc" id="astructsuper__block_html_ab512ca6a0a83eecffe89740646927228"><div class="ttname"><a href="structsuper__block.html#ab512ca6a0a83eecffe89740646927228">super_block::s_mounted</a></div><div class="ttdeci">struct inode * s_mounted</div><div class="ttdef"><b>Definition:</b> <a href="include_2vfs_2vfs_8h_source.html#l00119">vfs.h:119</a></div></div>
<div class="ttc" id="aaccess_8c_html_a0e5f21be079a3e8f83618c8c6e062c5a"><div class="ttname"><a href="access_8c.html#a0e5f21be079a3e8f83618c8c6e062c5a">in_group_p</a></div><div class="ttdeci">int in_group_p(gid_t grp)</div><div class="ttdef"><b>Definition:</b> <a href="access_8c_source.html#l00076">access.c:76</a></div></div>
<div class="ttc" id="asys_2errno_8h_html_ac2a2e9fa555401f94478f74e01868032"><div class="ttname"><a href="sys_2errno_8h.html#ac2a2e9fa555401f94478f74e01868032">EACCES</a></div><div class="ttdeci">#define EACCES</div><div class="ttdef"><b>Definition:</b> <a href="sys_2errno_8h_source.html#l00045">errno.h:45</a></div></div>
<div class="ttc" id="anamei_8c_html_a441ab26a551f04aa4901a4b2c6b9d71a"><div class="ttname"><a href="namei_8c.html#a441ab26a551f04aa4901a4b2c6b9d71a">permission</a></div><div class="ttdeci">int permission(struct inode *inode, int mask)</div><div class="ttdef"><b>Definition:</b> <a href="namei_8c_source.html#l00052">namei.c:52</a></div></div>
<div class="ttc" id="afat__string_8h_html_a070d2ce7b6bb7e5c05602aa8c308d0c4"><div class="ttname"><a href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a></div><div class="ttdeci">#define NULL</div><div class="ttdef"><b>Definition:</b> <a href="fat__string_8h_source.html#l00017">fat_string.h:17</a></div></div>
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