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<div id="projectname">The Netsukuku Project
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 <span id="projectnumber">0.0.9</span>
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<div id="projectbrief">An Alternative routing method</div>
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<div class="title">buffer.h</div> </div>
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<a href="../../d5/d08/buffer_8h.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">/* This file is part of Netsukuku</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * (c) Copyright 2005 Andrea Lo Pumo aka AlpT <alpt@freaknet.org></span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This source code is free software; you can redistribute it and/or</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * modify it under the terms of the GNU General Public License as published </span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * by the Free Software Foundation; either version 2 of the License,</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * or (at your option) any later version.</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * This source code is distributed in the hope that it will be useful,</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * Please refer to the GNU Public License for more details.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * You should have received a copy of the GNU Public License along with</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * this source code; if not, write to:</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * --</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * buffer.c: various functions to manipulate buffers</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#ifndef BUFFER_H</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#define BUFFER_H</span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * In bzero(3):</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * <<4.3BSD. This function [bzero] is deprecated -- use memset in new </span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * programs.>></span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="../../d5/d08/buffer_8h.html#a1e25b7aa30d2cb08043dd280dc626ec8"> 30</a></span> <span class="preprocessor">#define setzero(_p, _sz) memset((_p), 0, (_sz))</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * memput</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * It copies `__sz' bytes from `__src' to `__dst' and then increments the `__dst'</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * pointer of `__sz' bytes.</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * *WARNING* </span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * Do NOT put expression in `__dst', and `__sz', f.e.</span></div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * *WRONG CODE*</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * memput(buf++, src, (size+=sizeof(src));</span></div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * *CORRECT CODE*</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * buf++; size+=sizeof(src);</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * memput(buf, src, size);</span></div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * *WARNING*</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="../../d5/d08/buffer_8h.html#a6027607007772538fb822534543060eb"> 48</a></span> <span class="preprocessor">#define memput(__dst, __src, __sz) \</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">({ \</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="preprocessor"> void *_bufret=memcpy((__dst), (__src), (__sz)); \</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"> (__dst)+=(__sz); \</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"> _bufret; \</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">})</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * memget</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> *</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> * the same of memput(), but it increments `__src' instead.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="../../d5/d08/buffer_8h.html#a57468f8de01262bd15d2f187cae8ee42"> 60</a></span> <span class="preprocessor">#define memget(__dst, __src, __sz) \</span></div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="preprocessor">({ \</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"> void *_bufret=memcpy((__dst), (__src), (__sz)); \</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="preprocessor"> (__src)+=(__sz); \</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor"> _bufret; \</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor">})</span></div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment">/* use of hardcoded `_src' and `_dst' variable names */</span></div>
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<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="../../d5/d08/buffer_8h.html#a3777f1ce151e11e6fd92fcdc0144b7a1"> 68</a></span> <span class="preprocessor">#define bufput(_src, _sz) (memput(buf, (_src), (_sz)))</span></div>
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<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="../../d5/d08/buffer_8h.html#aa8330b376931bf36e9f24cafdb56af69"> 69</a></span> <span class="preprocessor">#define bufget(_dst, _sz) (memget((_dst), buf, (_sz)))</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">/*\</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * * * * Functions declaration * * *</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">\*/</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">int</span> <a class="code" href="../../d5/d08/buffer_8h.html#aef3a47dd35a06c4fbbc29dac8dc5451f">is_bufzero</a>(<span class="keyword">const</span> <span class="keywordtype">void</span> *a, <span class="keywordtype">int</span> sz);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#endif </span><span class="comment">/*BUFFER_H*/</span><span class="preprocessor"></span></div>
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<div class="ttc" id="buffer_8h_html_aef3a47dd35a06c4fbbc29dac8dc5451f"><div class="ttname"><a href="../../d5/d08/buffer_8h.html#aef3a47dd35a06c4fbbc29dac8dc5451f">is_bufzero</a></div><div class="ttdeci">int is_bufzero(const void *a, int sz)</div><div class="ttdef"><b>Definition:</b> buffer.c:28</div></div>
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