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<div class="title">inode.c</div> </div>
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<a href="../../d8/d2b/inode_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="../../db/da9/include_2vfs_2vfs_8h.html">vfs/vfs.h</a>></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <<a class="code" href="../../d1/df2/wait_8h.html">ubixos/wait.h</a>></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <<a class="code" href="../../d7/d00/sched_8h.html">ubixos/sched.h</a>></span></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="comment">//static struct inode *first_inode = NULL;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="../../d6/d6e/structwait__queue.html">wait_queue</a> *inode_wait = <a class="code" href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">//static int nr_inodes = 0;</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">static</span> <span class="keywordtype">int</span> nr_free_inodes = 0;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">static</span> <span class="keywordtype">void</span> write_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">static</span> <span class="keywordtype">void</span> __wait_on_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> unlock_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</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> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> wait_on_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>) {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#ae3aca8d74205feb53ee3b2fed18f6de3">i_lock</a>)</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  __wait_on_inode(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> }</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="../../d8/d2b/inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3"> 47</a></span> <span class="keywordtype">void</span> <a class="code" href="../../d8/d2b/inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a>(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>) {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d0/df8/structinode.html">inode</a>)</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span>;</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>  wait_on_inode(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#ifdef _IGNORE</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>) {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  printk(<span class="stringliteral">"VFS: iput: trying to free free inode\n"</span>);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  printk(<span class="stringliteral">"VFS: device %d/%d, inode %lu, mode=0%07o\n"</span>, MAJOR(<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a881d617f130ed3797ef9856766dbdc8c">i_rdev</a>), MINOR(<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a881d617f130ed3797ef9856766dbdc8c">i_rdev</a>), <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8131bb3b2d76d9e8b2353ddd6a453705">i_ino</a>, <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#aceb810156528818f5f17fd1918d58456">i_mode</a>);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a62da92e16379e2f23870256dc390ffff">i_pipe</a>)</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="../../d9/d83/i386_2sched_8c.html#a0034f099839cccda3a35d72c3f088cb5">wake_up_interruptible</a>(&<a class="code" href="../../d1/d7d/pipe__fs_8h.html#a31347e078a788d04497fbdac84ec83f2">PIPE_WAIT</a>(*<a class="code" href="../../d0/df8/structinode.html">inode</a>));</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  repeat:</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a> > 1) {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>--;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="../../d9/d83/i386_2sched_8c.html#a63ec7679a323834b440d952457d0b5ef">wake_up</a>(&inode_wait);</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="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a62da92e16379e2f23870256dc390ffff">i_pipe</a>) {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> page = (<span class="keywordtype">unsigned</span> long) <a class="code" href="../../d1/d7d/pipe__fs_8h.html#aa0861b0348be87a27260843e3cdd0845">PIPE_BASE</a>(*<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="../../d1/d7d/pipe__fs_8h.html#aa0861b0348be87a27260843e3cdd0845">PIPE_BASE</a> (*<a class="code" href="../../d0/df8/structinode.html">inode</a>) = <a class="code" href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="../../d7/de5/freevirtualpage_8c.html#a8f71cc4e67f102b7428516d1d0ea179e">vmm_freeVirtualPage</a>(page);</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>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a> && <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>-><a class="code" href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">s_op</a> && <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>-><a class="code" href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">s_op</a>-><a class="code" href="../../d1/d80/structsuper__operations.html#ac2d5b20c8406fe65285daa09beb32ef5">put_inode</a>) {</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>-><a class="code" href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">s_op</a>-><a class="code" href="../../d1/d80/structsuper__operations.html#ac2d5b20c8406fe65285daa09beb32ef5">put_inode</a>(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#aaf3909ab8783e663e30e0f3496b57ea5">i_nlink</a>)</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</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="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8c071b0db1ae2f7301b3119c717a3d95">i_dirt</a>) {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  write_inode(<a class="code" href="../../d0/df8/structinode.html">inode</a>); <span class="comment">/* we can sleep - so do again */</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  wait_on_inode(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">goto</span> repeat;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#af6da47fa3f89db802bc7039589bbe982">i_count</a>--;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  nr_free_inodes++;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span>;</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>  </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">static</span> <span class="keywordtype">void</span> __wait_on_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>) {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">struct </span><a class="code" href="../../d6/d6e/structwait__queue.html">wait_queue</a> wait = { <a class="code" href="../../d3/d02/armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>, <a class="code" href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> };</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>  <a class="code" href="../../d9/d83/i386_2sched_8c.html#afb3a51cdf92a160e2706fd1a4d008496">add_wait_queue</a>(&<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a2428445b93b43ebf63ca8aac15b1f381">i_wait</a>, &wait);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  repeat:</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>  <a class="code" href="../../d3/d02/armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="../../d1/dff/structtaskStruct.html#ab085a40e09975d9ebf55b393f9549710">state</a> = <a class="code" href="../../d7/d00/sched_8h.html#a3fb333b67375561d327e9b5a8ffa03b9a9ed0e690669f30a0570019c1386d55fe">UNINTERRUPTIBLE</a>;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#ae3aca8d74205feb53ee3b2fed18f6de3">i_lock</a>) {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="../../d3/d02/armv6_2sched_8c.html#a08933fe6d593a1c78b9080359f15a0b7">sched_yield</a>();</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">//schedule();</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">goto</span> repeat;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="../../d9/d83/i386_2sched_8c.html#a2d90a1e80b09cc4afcce607bfe2802ed">remove_wait_queue</a>(&<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a2428445b93b43ebf63ca8aac15b1f381">i_wait</a>, &wait);</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>  <a class="code" href="../../d3/d02/armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a>-><a class="code" href="../../d1/dff/structtaskStruct.html#ab085a40e09975d9ebf55b393f9549710">state</a> = <a class="code" href="../../d7/d00/sched_8h.html#a3fb333b67375561d327e9b5a8ffa03b9a1061be6c3fb88d32829cba6f6b2be304">RUNNING</a>;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  </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">void</span> write_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>) {</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8c071b0db1ae2f7301b3119c717a3d95">i_dirt</a>)</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  wait_on_inode(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8c071b0db1ae2f7301b3119c717a3d95">i_dirt</a>)</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">return</span>;</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="keywordflow">if</span> (!<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a> || !<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>-><a class="code" href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">s_op</a> || !<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>-><a class="code" href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">s_op</a>-><a class="code" href="../../d1/d80/structsuper__operations.html#a600df86ad28345eabc0e69ca919e8827">write_inode</a>) {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8c071b0db1ae2f7301b3119c717a3d95">i_dirt</a> = 0;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</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>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#ae3aca8d74205feb53ee3b2fed18f6de3">i_lock</a> = 1;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a8e3ca37fd8f709720380afd9f60d0e71">i_sb</a>-><a class="code" href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">s_op</a>-><a class="code" href="../../d1/d80/structsuper__operations.html#a600df86ad28345eabc0e69ca919e8827">write_inode</a>(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  </div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  unlock_inode(<a class="code" href="../../d0/df8/structinode.html">inode</a>);</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>  </div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> unlock_inode(<span class="keyword">struct</span> <a class="code" href="../../d0/df8/structinode.html">inode</a> * <a class="code" href="../../d0/df8/structinode.html">inode</a>) {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#ae3aca8d74205feb53ee3b2fed18f6de3">i_lock</a> = 0;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="../../d9/d83/i386_2sched_8c.html#a63ec7679a323834b440d952457d0b5ef">wake_up</a>(&<a class="code" href="../../d0/df8/structinode.html">inode</a>-><a class="code" href="../../d0/df8/structinode.html#a2428445b93b43ebf63ca8aac15b1f381">i_wait</a>);</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> }</div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="ainode_8c_html_a378733dcbf0fb08359b9a02145ac8fc3"><div class="ttname"><a href="../../d8/d2b/inode_8c.html#a378733dcbf0fb08359b9a02145ac8fc3">iput</a></div><div class="ttdeci">void iput(struct inode *inode)</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d2b/inode_8c_source.html#l00047">inode.c:47</a></div></div>
<div class="ttc" id="astructinode_html_a8e3ca37fd8f709720380afd9f60d0e71"><div class="ttname"><a href="../../d0/df8/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="../../d3/d73/inode_8h_source.html#l00055">inode.h:55</a></div></div>
<div class="ttc" id="apipe__fs_8h_html_aa0861b0348be87a27260843e3cdd0845"><div class="ttname"><a href="../../d1/d7d/pipe__fs_8h.html#aa0861b0348be87a27260843e3cdd0845">PIPE_BASE</a></div><div class="ttdeci">#define PIPE_BASE(inode)</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d7d/pipe__fs_8h_source.html#l00045">pipe_fs.h:45</a></div></div>
<div class="ttc" id="ainclude_2vfs_2vfs_8h_html"><div class="ttname"><a href="../../db/da9/include_2vfs_2vfs_8h.html">vfs.h</a></div></div>
<div class="ttc" id="ai386_2sched_8c_html_a2d90a1e80b09cc4afcce607bfe2802ed"><div class="ttname"><a href="../../d9/d83/i386_2sched_8c.html#a2d90a1e80b09cc4afcce607bfe2802ed">remove_wait_queue</a></div><div class="ttdeci">void remove_wait_queue(struct wait_queue **p, struct wait_queue *wait)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d83/i386_2sched_8c_source.html#l00315">sched.c:315</a></div></div>
<div class="ttc" id="asched_8h_html_a3fb333b67375561d327e9b5a8ffa03b9a1061be6c3fb88d32829cba6f6b2be304"><div class="ttname"><a href="../../d7/d00/sched_8h.html#a3fb333b67375561d327e9b5a8ffa03b9a1061be6c3fb88d32829cba6f6b2be304">RUNNING</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d00/sched_8h_source.html#l00047">sched.h:47</a></div></div>
<div class="ttc" id="astructinode_html_af6da47fa3f89db802bc7039589bbe982"><div class="ttname"><a href="../../d0/df8/structinode.html#af6da47fa3f89db802bc7039589bbe982">inode::i_count</a></div><div class="ttdeci">unsigned short i_count</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00064">inode.h:64</a></div></div>
<div class="ttc" id="ai386_2sched_8c_html_afb3a51cdf92a160e2706fd1a4d008496"><div class="ttname"><a href="../../d9/d83/i386_2sched_8c.html#afb3a51cdf92a160e2706fd1a4d008496">add_wait_queue</a></div><div class="ttdeci">void add_wait_queue(struct wait_queue **p, struct wait_queue *wait)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d83/i386_2sched_8c_source.html#l00299">sched.c:299</a></div></div>
<div class="ttc" id="ai386_2sched_8c_html_a0034f099839cccda3a35d72c3f088cb5"><div class="ttname"><a href="../../d9/d83/i386_2sched_8c.html#a0034f099839cccda3a35d72c3f088cb5">wake_up_interruptible</a></div><div class="ttdeci">void wake_up_interruptible(struct wait_queue **q)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d83/i386_2sched_8c_source.html#l00335">sched.c:335</a></div></div>
<div class="ttc" id="asched_8h_html"><div class="ttname"><a href="../../d7/d00/sched_8h.html">sched.h</a></div></div>
<div class="ttc" id="await_8h_html"><div class="ttname"><a href="../../d1/df2/wait_8h.html">wait.h</a></div></div>
<div class="ttc" id="asched_8h_html_a3fb333b67375561d327e9b5a8ffa03b9a9ed0e690669f30a0570019c1386d55fe"><div class="ttname"><a href="../../d7/d00/sched_8h.html#a3fb333b67375561d327e9b5a8ffa03b9a9ed0e690669f30a0570019c1386d55fe">UNINTERRUPTIBLE</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d00/sched_8h_source.html#l00047">sched.h:47</a></div></div>
<div class="ttc" id="astructinode_html_ae3aca8d74205feb53ee3b2fed18f6de3"><div class="ttname"><a href="../../d0/df8/structinode.html#ae3aca8d74205feb53ee3b2fed18f6de3">inode::i_lock</a></div><div class="ttdeci">unsigned char i_lock</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00066">inode.h:66</a></div></div>
<div class="ttc" id="astructinode_html"><div class="ttname"><a href="../../d0/df8/structinode.html">inode</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00039">inode.h:39</a></div></div>
<div class="ttc" id="astructinode_html_a8c071b0db1ae2f7301b3119c717a3d95"><div class="ttname"><a href="../../d0/df8/structinode.html#a8c071b0db1ae2f7301b3119c717a3d95">inode::i_dirt</a></div><div class="ttdeci">unsigned char i_dirt</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00067">inode.h:67</a></div></div>
<div class="ttc" id="ai386_2sched_8c_html_a63ec7679a323834b440d952457d0b5ef"><div class="ttname"><a href="../../d9/d83/i386_2sched_8c.html#a63ec7679a323834b440d952457d0b5ef">wake_up</a></div><div class="ttdeci">void wake_up(struct wait_queue **q)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d83/i386_2sched_8c_source.html#l00360">sched.c:360</a></div></div>
<div class="ttc" id="aarmv6_2sched_8c_html_a54397bfe18d5da4d50ff03b15f540858"><div class="ttname"><a href="../../d3/d02/armv6_2sched_8c.html#a54397bfe18d5da4d50ff03b15f540858">_current</a></div><div class="ttdeci">kTask_t * _current</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d02/armv6_2sched_8c_source.html#l00050">sched.c:50</a></div></div>
<div class="ttc" id="astructinode_html_a881d617f130ed3797ef9856766dbdc8c"><div class="ttname"><a href="../../d0/df8/structinode.html#a881d617f130ed3797ef9856766dbdc8c">inode::i_rdev</a></div><div class="ttdeci">__dev_t i_rdev</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00046">inode.h:46</a></div></div>
<div class="ttc" id="astructtaskStruct_html_ab085a40e09975d9ebf55b393f9549710"><div class="ttname"><a href="../../d1/dff/structtaskStruct.html#ab085a40e09975d9ebf55b393f9549710">taskStruct::state</a></div><div class="ttdeci">tState state</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/d00/sched_8h_source.html#l00072">sched.h:72</a></div></div>
<div class="ttc" id="astructinode_html_aceb810156528818f5f17fd1918d58456"><div class="ttname"><a href="../../d0/df8/structinode.html#aceb810156528818f5f17fd1918d58456">inode::i_mode</a></div><div class="ttdeci">__mode_t i_mode</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00042">inode.h:42</a></div></div>
<div class="ttc" id="astructinode_html_a8131bb3b2d76d9e8b2353ddd6a453705"><div class="ttname"><a href="../../d0/df8/structinode.html#a8131bb3b2d76d9e8b2353ddd6a453705">inode::i_ino</a></div><div class="ttdeci">unsigned long i_ino</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00041">inode.h:41</a></div></div>
<div class="ttc" id="astructinode_html_aaf3909ab8783e663e30e0f3496b57ea5"><div class="ttname"><a href="../../d0/df8/structinode.html#aaf3909ab8783e663e30e0f3496b57ea5">inode::i_nlink</a></div><div class="ttdeci">__nlink_t i_nlink</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00043">inode.h:43</a></div></div>
<div class="ttc" id="astructwait__queue_html"><div class="ttname"><a href="../../d6/d6e/structwait__queue.html">wait_queue</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/df2/wait_8h_source.html#l00034">wait.h:34</a></div></div>
<div class="ttc" id="astructsuper__operations_html_ac2d5b20c8406fe65285daa09beb32ef5"><div class="ttname"><a href="../../d1/d80/structsuper__operations.html#ac2d5b20c8406fe65285daa09beb32ef5">super_operations::put_inode</a></div><div class="ttdeci">void(* put_inode)(struct inode *)</div><div class="ttdef"><b>Definition:</b> <a href="../../db/da9/include_2vfs_2vfs_8h_source.html#l00100">vfs.h:100</a></div></div>
<div class="ttc" id="astructsuper__block_html_ad9e59d58fdb5ede31dc4aac235d2ab53"><div class="ttname"><a href="../../de/d37/structsuper__block.html#ad9e59d58fdb5ede31dc4aac235d2ab53">super_block::s_op</a></div><div class="ttdeci">struct super_operations * s_op</div><div class="ttdef"><b>Definition:</b> <a href="../../db/da9/include_2vfs_2vfs_8h_source.html#l00114">vfs.h:114</a></div></div>
<div class="ttc" id="astructinode_html_a62da92e16379e2f23870256dc390ffff"><div class="ttname"><a href="../../d0/df8/structinode.html#a62da92e16379e2f23870256dc390ffff">inode::i_pipe</a></div><div class="ttdeci">unsigned char i_pipe</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00068">inode.h:68</a></div></div>
<div class="ttc" id="apipe__fs_8h_html_a31347e078a788d04497fbdac84ec83f2"><div class="ttname"><a href="../../d1/d7d/pipe__fs_8h.html#a31347e078a788d04497fbdac84ec83f2">PIPE_WAIT</a></div><div class="ttdeci">#define PIPE_WAIT(inode)</div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d7d/pipe__fs_8h_source.html#l00044">pipe_fs.h:44</a></div></div>
<div class="ttc" id="afreevirtualpage_8c_html_a8f71cc4e67f102b7428516d1d0ea179e"><div class="ttname"><a href="../../d7/de5/freevirtualpage_8c.html#a8f71cc4e67f102b7428516d1d0ea179e">vmm_freeVirtualPage</a></div><div class="ttdeci">int vmm_freeVirtualPage(uint32_t addr)</div><div class="ttdef"><b>Definition:</b> <a href="../../d7/de5/freevirtualpage_8c_source.html#l00031">freevirtualpage.c:31</a></div></div>
<div class="ttc" id="astructinode_html_a2428445b93b43ebf63ca8aac15b1f381"><div class="ttname"><a href="../../d0/df8/structinode.html#a2428445b93b43ebf63ca8aac15b1f381">inode::i_wait</a></div><div class="ttdeci">struct wait_queue * i_wait</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d73/inode_8h_source.html#l00056">inode.h:56</a></div></div>
<div class="ttc" id="aarmv6_2sched_8c_html_a08933fe6d593a1c78b9080359f15a0b7"><div class="ttname"><a href="../../d3/d02/armv6_2sched_8c.html#a08933fe6d593a1c78b9080359f15a0b7">sched_yield</a></div><div class="ttdeci">void sched_yield()</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d02/armv6_2sched_8c_source.html#l00244">sched.c:244</a></div></div>
<div class="ttc" id="astructsuper__operations_html_a600df86ad28345eabc0e69ca919e8827"><div class="ttname"><a href="../../d1/d80/structsuper__operations.html#a600df86ad28345eabc0e69ca919e8827">super_operations::write_inode</a></div><div class="ttdeci">void(* write_inode)(struct inode *)</div><div class="ttdef"><b>Definition:</b> <a href="../../db/da9/include_2vfs_2vfs_8h_source.html#l00099">vfs.h:99</a></div></div>
<div class="ttc" id="afat__string_8h_html_a070d2ce7b6bb7e5c05602aa8c308d0c4"><div class="ttname"><a href="../../d6/d8a/fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a></div><div class="ttdeci">#define NULL</div><div class="ttdef"><b>Definition:</b> <a href="../../d6/d8a/fat__string_8h_source.html#l00017">fat_string.h:17</a></div></div>
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