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<div class="headertitle"><div class="title">env_ns</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// vi:set ft=cpp: -*- Mode: C++ -*-</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span> </div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span> </div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include <<a class="code" href="cap__alloc.html">l4/re/cap_alloc</a>></span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include <<a class="code" href="util_2cap__alloc.html">l4/re/util/cap_alloc</a>></span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include <<a class="code" href="namespace.html">l4/re/namespace</a>></span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include <<a class="code" href="env.html">l4/re/env</a>></span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceL4Re.html">L4Re</a> { <span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceL4Re_1_1Util.html">Util</a> {</div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="keyword">class </span>Env_ns</div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span>{</div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="keyword">private</span>:</div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> L4Re::Cap_alloc *_ca;</div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> Env <span class="keyword">const</span> *_env;</div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">explicit</span> Env_ns(Env <span class="keyword">const</span> *env = <a class="code hl_function" href="classL4Re_1_1Env.html#a2706ca11e70845b0a29a5646c9fd54bc">Env::env</a>(),</div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> L4Re::Cap_alloc *ca = &<a class="code hl_variable" href="group__l4re__cap__api.html#ga29e3dbeb3c8ed0609519c9df212c9c52">L4Re::Util::cap_alloc</a>)</div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> : _ca(ca), _env(env) {}</div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> L4::Cap<void></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> query(<span class="keywordtype">char</span> <span class="keyword">const</span> *name, <span class="keywordtype">unsigned</span> len, <span class="keywordtype">int</span> timeout = <a class="code hl_enumvalue" href="classL4Re_1_1Namespace.html#af25ee761c36cb9a897030afbeedd119fae9bcac646d4cce688a09fd5f569822cf">Namespace::To_default</a>,</div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> *local_id = 0, <span class="keywordtype">bool</span> iterate = <span class="keyword">true</span>) const noexcept</div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> {</div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">typedef</span> <a class="code hl_typedef" href="classL4Re_1_1Env.html#a6f210542f5090254dc7c93826ce2fcc0">Env::Cap_entry</a> Cap_entry;</div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> </div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// Skip possible first slash</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">if</span> (len && name[0] == <span class="charliteral">'/'</span>)</div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> {</div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> ++name;</div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> --len;</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> }</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> <span class="keywordtype">char</span> <span class="keyword">const</span> *n = name;</div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordflow">for</span> (; len && *n != <span class="charliteral">'/'</span>; ++n, --len) <span class="comment">// Count first path element</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> ;</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> Cap_entry <span class="keyword">const</span> *e = _env->get(name, n - name);</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keywordflow">if</span> (!e)</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="keywordflow">return</span> L4::Cap<void>(-<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a07b47154e30565336b80271b9f2ffcb4">L4_ENOENT</a>);</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">if</span> (len > 0 && *n == <span class="charliteral">'/'</span>)</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> {</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> L4::Cap<L4Re::Namespace> ns(e->cap);</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> L4::Cap<void> cap = _ca->alloc<<span class="keywordtype">void</span>>();</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keywordflow">if</span> (!cap.<a class="code hl_function" href="classL4_1_1Cap__base.html#ab4937bb12579c752564f7250760d0bda">is_valid</a>())</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keywordflow">return</span> L4::Cap<void>(-<a class="code hl_enumvalue" href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9af7f5d38973fbf298613b03a088541e27">L4_ENOMEM</a>);</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keywordtype">long</span> r = ns->query(n + 1, len - 1, cap, timeout, local_id, iterate);</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keywordflow">if</span> (r >= 0)</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordflow">return</span> cap;</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> _ca->free(cap);</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keywordflow">return</span> L4::Cap<void>(r);</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> }</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keywordflow">return</span> L4::Cap<void>(e->cap);</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> }</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> L4::Cap<void></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> query(<span class="keywordtype">char</span> <span class="keyword">const</span> *name, <span class="keywordtype">int</span> timeout = <a class="code hl_enumvalue" href="classL4Re_1_1Namespace.html#af25ee761c36cb9a897030afbeedd119fae9bcac646d4cce688a09fd5f569822cf">Namespace::To_default</a>,</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> *local_id = 0, <span class="keywordtype">bool</span> iterate = <span class="keyword">true</span>) const noexcept</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> { <span class="keywordflow">return</span> query(name, __builtin_strlen(name), timeout, local_id, iterate); }</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">template</span><<span class="keyword">typename</span> T ></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> L4::Cap<T></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> query(<span class="keywordtype">char</span> <span class="keyword">const</span> *name, <span class="keywordtype">int</span> timeout = <a class="code hl_enumvalue" href="classL4Re_1_1Namespace.html#af25ee761c36cb9a897030afbeedd119fae9bcac646d4cce688a09fd5f569822cf">Namespace::To_default</a>,</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <a class="code hl_typedef" href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a> *local_id = 0, <span class="keywordtype">bool</span> iterate = <span class="keyword">true</span>) const noexcept</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> {</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceL4.html#ac674c8e32808f504f4fa0aa8e5276e84">L4::cap_cast<T></a>(query(name, __builtin_strlen(name),</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> timeout, local_id, iterate));</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> }</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span>};</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span>}}</div>
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<div class="ttc" id="acap__alloc_html"><div class="ttname"><a href="cap__alloc.html">cap_alloc</a></div><div class="ttdoc">Abstract capability-allocator interface.</div></div>
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<div class="ttc" id="aclassL4Re_1_1Env_html_a2706ca11e70845b0a29a5646c9fd54bc"><div class="ttname"><a href="classL4Re_1_1Env.html#a2706ca11e70845b0a29a5646c9fd54bc">L4Re::Env::env</a></div><div class="ttdeci">static Env const * env() noexcept</div><div class="ttdoc">Returns the initial environment for the current task.</div><div class="ttdef"><b>Definition</b> <a href="env_source.html#l00096">env:96</a></div></div>
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<div class="ttc" id="aclassL4Re_1_1Env_html_a6f210542f5090254dc7c93826ce2fcc0"><div class="ttname"><a href="classL4Re_1_1Env.html#a6f210542f5090254dc7c93826ce2fcc0">L4Re::Env::Cap_entry</a></div><div class="ttdeci">l4re_env_cap_entry_t Cap_entry</div><div class="ttdoc">C++ type for an entry in the initial objects array.</div><div class="ttdef"><b>Definition</b> <a href="env_source.html#l00087">env:87</a></div></div>
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<div class="ttc" id="aclassL4Re_1_1Namespace_html_af25ee761c36cb9a897030afbeedd119fae9bcac646d4cce688a09fd5f569822cf"><div class="ttname"><a href="classL4Re_1_1Namespace.html#af25ee761c36cb9a897030afbeedd119fae9bcac646d4cce688a09fd5f569822cf">L4Re::Namespace::To_default</a></div><div class="ttdeci">@ To_default</div><div class="ttdoc">Default timeout.</div><div class="ttdef"><b>Definition</b> <a href="namespace_source.html#l00085">namespace:85</a></div></div>
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<div class="ttc" id="aclassL4_1_1Cap__base_html_ab4937bb12579c752564f7250760d0bda"><div class="ttname"><a href="classL4_1_1Cap__base.html#ab4937bb12579c752564f7250760d0bda">L4::Cap_base::is_valid</a></div><div class="ttdeci">bool is_valid() const noexcept</div><div class="ttdoc">Test whether the capability is a valid capability index (i.e., not L4_INVALID_CAP).</div><div class="ttdef"><b>Definition</b> <a href="capability_8h_source.html#l00057">capability.h:57</a></div></div>
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<div class="ttc" id="aenv_html"><div class="ttname"><a href="env.html">env</a></div><div class="ttdoc">Environment interface.</div></div>
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<div class="ttc" id="agroup__l4__basic__types_html_ga1c2c4b333f75b1d05b59855910f2b9cb"><div class="ttname"><a href="group__l4__basic__types.html#ga1c2c4b333f75b1d05b59855910f2b9cb">l4_umword_t</a></div><div class="ttdeci">unsigned long l4_umword_t</div><div class="ttdoc">Unsigned machine word.</div><div class="ttdef"><b>Definition</b> <a href="l4_2sys_2l4int_8h_source.html#l00040">l4int.h:40</a></div></div>
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<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9a07b47154e30565336b80271b9f2ffcb4"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9a07b47154e30565336b80271b9f2ffcb4">L4_ENOENT</a></div><div class="ttdeci">@ L4_ENOENT</div><div class="ttdoc">No such entity.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00034">err.h:34</a></div></div>
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<div class="ttc" id="agroup__l4__error__api_html_ggab4c8abc71ffa221a25c1ca5840a354f9af7f5d38973fbf298613b03a088541e27"><div class="ttname"><a href="group__l4__error__api.html#ggab4c8abc71ffa221a25c1ca5840a354f9af7f5d38973fbf298613b03a088541e27">L4_ENOMEM</a></div><div class="ttdeci">@ L4_ENOMEM</div><div class="ttdoc">No memory.</div><div class="ttdef"><b>Definition</b> <a href="err_8h_source.html#l00039">err.h:39</a></div></div>
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<div class="ttc" id="agroup__l4re__cap__api_html_ga29e3dbeb3c8ed0609519c9df212c9c52"><div class="ttname"><a href="group__l4re__cap__api.html#ga29e3dbeb3c8ed0609519c9df212c9c52">L4Re::Util::cap_alloc</a></div><div class="ttdeci">_Cap_alloc & cap_alloc</div><div class="ttdoc">Capability allocator.</div></div>
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<div class="ttc" id="anamespaceL4Re_1_1Util_html"><div class="ttname"><a href="namespaceL4Re_1_1Util.html">L4Re::Util</a></div><div class="ttdoc">Documentation of the L4 Runtime Environment utility functionality in C++.</div><div class="ttdef"><b>Definition</b> <a href="pkg_2l4re-core_2l4re_2doc_2l4re_8dox_source.html#l00021">l4re.dox:21</a></div></div>
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<div class="ttc" id="anamespaceL4Re_html"><div class="ttname"><a href="namespaceL4Re.html">L4Re</a></div><div class="ttdoc">L4Re C++ Interfaces.</div><div class="ttdef"><b>Definition</b> <a href="cmd__control_source.html#l00014">cmd_control:14</a></div></div>
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<div class="ttc" id="anamespaceL4_html_ac674c8e32808f504f4fa0aa8e5276e84"><div class="ttname"><a href="namespaceL4.html#ac674c8e32808f504f4fa0aa8e5276e84">L4::cap_cast</a></div><div class="ttdeci">Cap< T > cap_cast(Cap< F > const &c) noexcept</div><div class="ttdoc">static_cast for capabilities.</div><div class="ttdef"><b>Definition</b> <a href="capability_8h_source.html#l00416">capability.h:416</a></div></div>
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<div class="ttc" id="anamespace_html"><div class="ttname"><a href="namespace.html">namespace</a></div><div class="ttdoc">Namespace interface.</div></div>
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<div class="ttc" id="astring_8h_html"><div class="ttname"><a href="string_8h.html">string.h</a></div><div class="ttdoc">String.</div></div>
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<div class="ttc" id="autil_2cap__alloc_html"><div class="ttname"><a href="util_2cap__alloc.html">cap_alloc</a></div><div class="ttdoc">Capability allocator.</div></div>
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