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Posted to commits@mesos.apache.org by gi...@apache.org on 2018/05/18 09:30:10 UTC
[19/48] mesos-site git commit: Updated the website built from mesos
SHA: c020a13.
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/d7774475/content/api/latest/c++/reparsepoint_8hpp_source.html
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diff --git a/content/api/latest/c++/reparsepoint_8hpp_source.html b/content/api/latest/c++/reparsepoint_8hpp_source.html
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<div class="contents">
<a href="reparsepoint_8hpp.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">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// You may obtain a copy of the License at</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">// http://www.apache.org/licenses/LICENSE-2.0</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">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class
="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef __STOUT_INTERNAL_WINDOWS_REPARSEPOINT_HPP__</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#define __STOUT_INTERNAL_WINDOWS_REPARSEPOINT_HPP__</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <<a class="code" href="nothing_8hpp.html">stout/nothing.hpp</a>></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <<a class="code" href="try_8hpp.html">stout/tr
y.hpp</a>></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html">stout/windows.hpp</a>></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <<a class="code" href="mkdir_8hpp.html">stout/os/mkdir.hpp</a>></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <<a class="code" href="3rdparty_2stout_2include_2stout_2internal_2windows_2attributes_8hpp.html">stout/internal/windows/attributes.hpp</a>></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">
#include <<a class="code" href="longpath_8hpp.html">stout/internal/windows/longpath.hpp</a>></span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span><a class="code" href="namespaceos.html">os</a> {</div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="namespaceos_1_1stat.html"> 29</a></span> <span class="keyword">namespace </span><a class="code" href="namespacecgroups.html#a78e3c7ca2e422779908eec45f859d757">stat</a> {</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// Specify whether symlink path arguments should be followed or</span></div><div class="line"><a na
me="l00032"></a><span class="lineno"> 32</span> <span class="comment">// not. APIs in the os::stat family that take a FollowSymlink</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// argument all provide FollowSymlink::FOLLOW_SYMLINK as the default value,</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// so they will follow symlinks unless otherwise specified.</span></div><div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="namespaceos_1_1stat.html#a305c82e6d53ccd82665b4b3648afcd1c"> 35</a></span> <span class="keyword">enum class</span> <a class="code" href="namespaceos_1_1stat.html#a305c82e6d53ccd82665b4b3648afcd1c">FollowSymlink</a></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> {</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <a class="co
de" href="namespaceos_1_1stat.html#a305c82e6d53ccd82665b4b3648afcd1ca884cbffa48c7e5b804161fdc71389c7e">DO_NOT_FOLLOW_SYMLINK</a>,</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <a class="code" href="namespaceos_1_1stat.html#a305c82e6d53ccd82665b4b3648afcd1ca52881123108233bc671c71041ff852c5">FOLLOW_SYMLINK</a></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> };</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> } <span class="comment">// namespace stat {</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> } <span class="comment">// namespace os {</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a>
<span class="lineno"> 45</span> <span class="keyword">namespace </span><a class="code" href="namespaceinternal.html">internal</a> {</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">namespace </span>windows {</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> <span class="comment">// We pass this struct to `DeviceIoControl` to get information about a reparse</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">// point (including things like whether it's a symlink). It is normally part of</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// the Device Driver Kit (DDK), specifically `nitfs.h`, but rather than taking</span></div><div class="line"><a name="l00051"></a><span class="lineno"
> 51</span> <span class="comment">// a dependency on the DDK, we choose to simply copy the struct here. This is a</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment">// well-worn path used by Boost FS[1], among others. See documentation</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// here[2][3].</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">//</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">// [1] http://www.boost.org/doc/libs/1_46_1/libs/filesystem/v3/src/operations.cpp // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment">// [2] https://msdn.microsoft.com/en-us/library/cc232007.aspx</span></div><div class="line"><a name="l00057"></
a><span class="lineno"> 57</span> <span class="comment">// [3] https://msdn.microsoft.com/en-us/library/cc232005.aspx</span></div><div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html"> 58</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html">_REPARSE_DATA_BUFFER</a></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// Describes, among other things, which type of reparse point this is (e.g.,</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// a symlink).</span></div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_
1_1__REPARSE__DATA__BUFFER.html#a1520ec4396e2650f9b479361fe9b4727"> 62</a></span>  ULONG <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a1520ec4396e2650f9b479361fe9b4727">ReparseTag</a>;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// Size in bytes of common portion of the `REPARSE_DATA_BUFFER`.</span></div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a6de8b3abb196d2aeca2929b8d172597e"> 64</a></span>  USHORT <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a6de8b3abb196d2aeca2929b8d172597e">ReparseDataLength</a>;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// Unused. Ignore.</span></div><div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="structinternal_1_1win
dows_1_1__REPARSE__DATA__BUFFER.html#a4e97b9f5d80873396957e025c4e35e71"> 66</a></span>  USHORT <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a4e97b9f5d80873396957e025c4e35e71">Reserved</a>;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// Holds symlink data.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">struct</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>  <span class="comment">// Byte offset in `PathBuffer` where the substitute name begins.</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// Calculated as an offset from 0.</span></div><div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="s
tructinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#aba882719b9f33313a812784ae9e7b3b5"> 72</a></span>  USHORT <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#aba882719b9f33313a812784ae9e7b3b5">SubstituteNameOffset</a>;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// Length in bytes of the substitute name.</span></div><div class="line"><a name="l00074"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a12170e3a11f67ec2f060e93e40e6be2d"> 74</a></span>  USHORT <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a12170e3a11f67ec2f060e93e40e6be2d">SubstituteNameLength</a>;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// Byte offset in `PathBuffer` where the print name begins. Calculated as</span></div><div class="line"><a na
me="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// an offset from 0.</span></div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a2e9448ef8100749cf1d4e2c6d1b01eff"> 77</a></span>  USHORT <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a2e9448ef8100749cf1d4e2c6d1b01eff">PrintNameOffset</a>;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// Length in bytes of the print name.</span></div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a74137b9c802684307550f257a62d263f"> 79</a></span>  USHORT <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a74137b9c802684307550f257a62d263f">PrintNameLength</a>;</div><div class="line"><a name="l000
80"></a><span class="lineno"> 80</span>  <span class="comment">// Indicates whether symlink is absolute or relative. If flags containing</span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// `SYMLINK_FLAG_RELATIVE`, then the substitute name is a relative</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// symlink.</span></div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#af1060c96a499d7bed78bd8b3fd9d1c8c"> 83</a></span>  ULONG <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#af1060c96a499d7bed78bd8b3fd9d1c8c">Flags</a>;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// The path string; the Windows declaration is the first byte, but we</span></div><di
v class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// declare a suitably sized array so we can use this struct more easily. The</span></div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// "path string" itself is a Unicode `wchar` array containing both</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// substitute name and print name. They can occur in any order. Use the</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// offset and length of each in this struct to calculate where each starts</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// and ends.</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">//
</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// https://msdn.microsoft.com/en-us/library/windows/hardware/ff552012(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a77bd10c591a84eb780db48a5195140a5"> 92</a></span>  WCHAR PathBuffer[MAXIMUM_REPARSE_DATA_BUFFER_SIZE];</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  } SymbolicLinkReparseBuffer;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> } <a class="code" href="namespaceinternal_1_1windows.html#ac3625d90ddd93b6c9a889610263990c1">REPARSE_DATA_BUFFER</a>;</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> </div><div clas
s="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// Convenience struct for holding symlink data, meant purely for internal use.</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// We pass this around instead of the `REPARSE_DATA_BUFFER` struct, simply</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">// because this struct is easier to deal with and reason about.</span></div><div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1SymbolicLink.html"> 100</a></span> <span class="keyword">struct </span><a class="code" href="structinternal_1_1windows_1_1SymbolicLink.html">SymbolicLink</a></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> {</div><div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="struc
tinternal_1_1windows_1_1SymbolicLink.html#a46106b565c75b06e6bc8332c58ae9484"> 102</a></span>  std::wstring <a class="code" href="structinternal_1_1windows_1_1SymbolicLink.html#a46106b565c75b06e6bc8332c58ae9484">substitute_name</a>;</div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1SymbolicLink.html#a7ca6332f2c62622fdf6a8340989fb837"> 103</a></span>  std::wstring <a class="code" href="structinternal_1_1windows_1_1SymbolicLink.html#a7ca6332f2c62622fdf6a8340989fb837">print_name</a>;</div><div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="structinternal_1_1windows_1_1SymbolicLink.html#a89e2e286624560540be6ad3c2ca484f8"> 104</a></span>  ULONG <a class="code" href="structinternal_1_1windows_1_1SymbolicLink.html#a89e2e286624560540be6ad3c2ca484f8">flags</a>;</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> };</div><div class="line"><a name="
l00106"></a><span class="lineno"> 106</span> </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> <span class="comment">// Checks file/folder attributes for a path to see if the reparse point</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// attribute is set; this indicates whether the path points at a reparse point,</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment">// rather than a "normal" file or folder.</span></div><div class="line"><a name="l00111"></a><span class="lineno"><a class="line" href="namespaceinternal_1_1windows.html#a9205fe9be7dc028375cd24338483152b"> 111</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<bool></a> <a class="code" href="namespaceinternal_1_1windows
.html#a9205fe9be7dc028375cd24338483152b">reparse_point_attribute_set</a>(<span class="keyword">const</span> std::wstring& absolute_path)</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>  <span class="keyword">const</span> <a class="code" href="classTry.html">Try<DWORD></a> attributes = <a class="code" href="namespaceinternal_1_1windows.html#adb5b8a8afe285eb66a0a551f2382d113">get_file_attributes</a>(absolute_path.data());</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> (attributes.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(attributes.<a class="code" href="classTry.htm
l#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</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> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> (attributes.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>() & FILE_ATTRIBUTE_REPARSE_POINT) != 0;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</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> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment">// Attempts to extract symlink data out of a `REPARSE_DATA_BUFFER` (which could</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123
</span> <span class="comment">// hold other things, e.g., mount point data).</span></div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="namespaceinternal_1_1windows.html#afd9a4ce68b9e02355cf2a92c49828081"> 124</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<SymbolicLink></a> <a class="code" href="namespaceinternal_1_1windows.html#afd9a4ce68b9e02355cf2a92c49828081">build_symbolic_link</a>(<span class="keyword">const</span> <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html">REPARSE_DATA_BUFFER</a>& data)</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="keyword">const</span> <span class="keywordtype">bool</span> is_symLink = (data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a1520ec4396e2650f9b47
9361fe9b4727">ReparseTag</a> & IO_REPARSE_TAG_SYMLINK) != 0;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">if</span> (!is_symLink) {</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">"Data buffer is not a symlink"</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>  <span class="comment">// NOTE: This buffer is not null terminated.</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">const</span> WCHAR* substitute_name =</div><div class="line"><a name="l00133"></a><span class="lineno">
133</span>  data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a77bd10c591a84eb780db48a5195140a5">PathBuffer</a> +</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#aba882719b9f33313a812784ae9e7b3b5">SubstituteNameOffset</a> / <span class="keyword">sizeof</span>(WCHAR);</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> substitute_name_length =</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> 
data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a12170e3a11f67ec2f060e93e40e6be2d">SubstituteNameLength</a> / <span class="keyword">sizeof</span>(WCHAR);</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="comment">// NOTE: This buffer is not null terminated.</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">const</span> WCHAR* print_name =</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1
windows_1_1__REPARSE__DATA__BUFFER.html#a77bd10c591a84eb780db48a5195140a5">PathBuffer</a> +</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a2e9448ef8100749cf1d4e2c6d1b01eff">PrintNameOffset</a> / <span class="keyword">sizeof</span>(WCHAR);</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> print_name_length =</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BU
FFER.html#a74137b9c802684307550f257a62d263f">PrintNameLength</a> / <span class="keyword">sizeof</span>(WCHAR);</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>  <span class="keywordflow">return</span> <a class="code" href="structinternal_1_1windows_1_1SymbolicLink.html">SymbolicLink</a>{</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  std::wstring(substitute_name, substitute_name_length),</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  std::wstring(print_name, print_name_length),</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  data.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html#a7a7397a1d339f687d5fd5a5f7b2f6457">SymbolicLinkReparseBuffer</a>.<a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFF
ER.html#af1060c96a499d7bed78bd8b3fd9d1c8c">Flags</a>};</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> }</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment">// Attempts to get a file or folder handle for an absolute path, and follows</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment">// symlinks. That is, if the path points at a symlink, the handle will refer to</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">// the file or folder the symlink points at, rather than the symlink itself.</span></div><div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="namespaceinternal_1_1windows.htm
l#a5b261c85683d489b859236063e979e98"> 155</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<SharedHandle></a> <a class="code" href="namespaceinternal_1_1windows.html#a5b261c85683d489b859236063e979e98">get_handle_follow</a>(<span class="keyword">const</span> std::string& absolute_path)</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> {</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">const</span> <a class="code" href="classTry.html">Try<DWORD></a> attributes = <a class="code" href="namespaceinternal_1_1windows.html#adb5b8a8afe285eb66a0a551f2382d113">get_file_attributes</a>(<a class="code" href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(absolute_path));</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="line
no"> 159</span>  <span class="keywordflow">if</span> (attributes.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(attributes.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</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> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">bool</span> resolved_path_is_directory = attributes.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>() & FILE_ATTRIBUTE_DIRECTORY;</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div><div class="line"><a name="l0
0165"></a><span class="lineno"> 165</span>  <span class="comment">// NOTE: The name of `CreateFile` is misleading: it is also used to retrieve</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// handles to existing files or directories as if it were actually `OpenPath`</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// (which does not exist). We use `OPEN_EXISTING` but not</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// `FILE_FLAG_OPEN_REPARSE_POINT` to explicitily follow (resolve) symlinks in</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// the path to the file or directory.</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">//</span></div><div class
="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="comment">// Note also that `CreateFile` will appropriately generate a handle for</span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="comment">// either a folder or a file, as long as the appropriate flag is being set:</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// `FILE_FLAG_BACKUP_SEMANTICS`.</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">//</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// The `FILE_FLAG_BACKUP_SEMANTICS` flag is being set whenever the target is</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// a directory. According to MSDN[1]: "You must set this flag to obta
in a</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// handle to a directory. A directory handle can be passed to some functions</span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">// instead of a file handle". More `FILE_FLAG_BACKUP_SEMANTICS` documentation</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// can be found in MSDN[2].</span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">//</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// The `GENERIC_READ` flag is being used because it's the most common way of</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// opening a file for reading only.
The `SHARE` flags allow other processes</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// to read the file at the same time, as well as allow this process to read</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">// files that were also opened with these flags. MSDN[1] provides a more</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// detailed explanation of these flags.</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">//</span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// [1] https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00188"></a><span class="lineno">
188</span>  <span class="comment">// [2] https://msdn.microsoft.com/en-us/library/windows/desktop/aa364399(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">const</span> DWORD access_flags = resolved_path_is_directory</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  ? FILE_FLAG_BACKUP_SEMANTICS</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  : FILE_ATTRIBUTE_NORMAL;</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">const</span> <a class="code" href="namespacerouting_1_1queueing_1_1ingress.html#a934208b6017d0a9aed90b6594bb8292f">HANDLE</a> handle = ::CreateFileW(</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a
class="code" href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(absolute_path).data(),</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  GENERIC_READ, <span class="comment">// Open the file for reading only.</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="comment">// Must pass in all SHARE flags below, in case file is already open.</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="comment">// Otherwise, we may get an access denied error.</span></div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">nullptr</span>, <span class="comment">// Ignored.</span></div><div class="line"><a
name="l00200"></a><span class="lineno"> 200</span>  OPEN_EXISTING, <span class="comment">// Open existing file.</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  access_flags, <span class="comment">// Open file, not the symlink itself.</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">nullptr</span>); <span class="comment">// Ignored.</span></div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (handle == INVALID_HANDLE_VALUE) {</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>();</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>
60; }</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">return</span> <a class="code" href="classSharedHandle.html">SharedHandle</a>(handle, ::CloseHandle);</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> }</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment">// Attempts to get a file or folder handle for an absolute path, and does not</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment">// follow symlinks. That is, if the path points at a symlink, the handle will</span></div><div class="line"><a name="l00214"></a><span class="line
no"> 214</span> <span class="comment">// refer to the symlink rather than the file or folder the symlink points at.</span></div><div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="namespaceinternal_1_1windows.html#a8ee4f75d803d8ed56ce760d8e1dfac14"> 215</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<SharedHandle></a> <a class="code" href="namespaceinternal_1_1windows.html#a8ee4f75d803d8ed56ce760d8e1dfac14">get_handle_no_follow</a>(<span class="keyword">const</span> std::string& absolute_path)</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> {</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">const</span> <a class="code" href="classTry.html">Try<DWORD></a> attributes = <a class="code" href="namespaceinternal_1_1windows.html#adb5b8a8afe285eb66a0a551f2382d113">get_file_attributes</a>(<a class="code"
href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(absolute_path));</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">if</span> (attributes.<a class="code" href="classTry.html#a0b98f95163b8a38daafd1651b043a276">isError</a>()) {</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(attributes.<a class="code" href="classTry.html#aec4a11ddd3c036e889d90b7eb6258ba7">error</a>());</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">bool</span> resolved_path_is_dir
ectory = attributes.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>() & FILE_ATTRIBUTE_DIRECTORY;</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> </div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="comment">// NOTE: According to the `CreateFile` documentation[1], the `OPEN_EXISTING`</span></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="comment">// and `FILE_FLAG_OPEN_REPARSE_POINT` flags need to be used when getting a</span></div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// handle for the symlink.</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">//</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// Note also that `CreateFile` will
appropriately generate a handle for</span></div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// either a folder or a file, as long as the appropriate flag is being set:</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="comment">// `FILE_FLAG_BACKUP_SEMANTICS` or `FILE_FLAG_OPEN_REPARSE_POINT`.</span></div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">//</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// The `FILE_FLAG_BACKUP_SEMANTICS` flag is being set whenever the target is</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="comment">// a directory. According to MSDN[1]: "You must set this flag to obtain a</span></div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>
0; <span class="comment">// handle to a directory. A directory handle can be passed to some functions</span></div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// instead of a file handle". More `FILE_FLAG_BACKUP_SEMANTICS` documentation</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="comment">// can be found in MSDN[2].</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">//</span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="comment">// The `GENERIC_READ` flag is being used because it's the most common way of</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="comment">// opening a file for reading only. The `SHARE` flags allow other processes</span></div><div class="line"><a name="l00241"></a><s
pan class="lineno"> 241</span>  <span class="comment">// to read the file at the same time, as well as allow this process to read</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="comment">// files that were also opened with these flags. MSDN[1] provides a more</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// detailed explanation of these flags.</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="comment">//</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">// [1] https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="comment">// [2] https://msdn.microsoft.com/en-us/library/windo
ws/desktop/aa364399(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">const</span> DWORD access_flags = resolved_path_is_directory</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  ? (FILE_FLAG_OPEN_REPARSE_POINT | FILE_FLAG_BACKUP_SEMANTICS)</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  : FILE_FLAG_OPEN_REPARSE_POINT;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">const</span> <a class="code" href="namespacerouting_1_1queueing_1_1ingress.html#a934208b6017d0a9aed90b6594bb8292f">HANDLE</a> handle = ::CreateFileW(</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="namespaceinternal_1_1windows.html#
abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(absolute_path).data(),</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  GENERIC_READ, <span class="comment">// Open the file for reading only.</span></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="comment">// Must pass in all SHARE flags below, in case file is already open.</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// Otherwise, we may get an access denied error.</span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keyword">nullptr</span>, <span class="comment">// Ignored.</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#
160; OPEN_EXISTING, <span class="comment">// Open existing symlink.</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  access_flags, <span class="comment">// Open symlink, not the file it points to.</span></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keyword">nullptr</span>); <span class="comment">// Ignored.</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (handle == INVALID_HANDLE_VALUE) {</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>();</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div><div class="line"><a name="l0026
5"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span> <a class="code" href="classSharedHandle.html">SharedHandle</a>(handle, ::CloseHandle);</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span> }</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment">// Attempts to get the symlink data for a file or folder handle.</span></div><div class="line"><a name="l00271"></a><span class="lineno"><a class="line" href="namespaceinternal_1_1windows.html#a85f7e5d0197eeb93bde525379b8e14d6"> 271</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<SymbolicLink></a> <a class="code" href="namespa
ceinternal_1_1windows.html#a85f7e5d0197eeb93bde525379b8e14d6">get_symbolic_link_data</a>(<span class="keyword">const</span> <a class="code" href="namespacerouting_1_1queueing_1_1ingress.html#a934208b6017d0a9aed90b6594bb8292f">HANDLE</a> handle)</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> {</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="comment">// To get the symlink data, we call `DeviceIoControl`. This function is part</span></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">// of the Device Driver Kit (DDK)[1] and, along with `FSCTL_GET_REPARSE_POINT`</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// is used to emit information about reparse points (and, thus, symlinks,</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span clas
s="comment">// since symlinks are implemented with reparse points). This technique is</span></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">// being used in Boost FS code as well[2].</span></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="comment">//</span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="comment">// Summarized, the documentation tells us that we need to pass in</span></div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// `FSCTL_GET_REPARSE_POINT` to get the function to populate a</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="comment">// `REPARSE_DATA_BUFFER` struct with data about a reparse point.</span></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span cla
ss="comment">// The `REPARSE_DATA_BUFFER` struct is defined in a DDK header file,</span></div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="comment">// so to avoid bringing in a multitude of DDK headers we take a cue from</span></div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">// Boost FS, and copy the struct into this header (see above).</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">//</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">// Finally, for context, it may be worth looking at the MSDN</span></div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">// documentation[3] for `DeviceIoControl` itself.</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <sp
an class="comment">//</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="comment">// [1] https://msdn.microsoft.com/en-us/library/windows/desktop/aa364571(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// [2] https://svn.boost.org/trac/boost/ticket/4663</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="comment">// [3] https://msdn.microsoft.com/en-us/library/windows/desktop/aa363216(v=vs.85).aspx // NOLINT(whitespace/line_length)</span></div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <a class="code" href="structinternal_1_1windows_1_1__REPARSE__DATA__BUFFER.html">REPARSE_DATA_BUFFER</a> buffer;</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  DWORD ignored = 0;</div><div class="line"><a name
="l00294"></a><span class="lineno"> 294</span> </div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// The semantics of this function are: get the reparse data associated with</span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="comment">// the `handle` of some open directory or file, and that data in</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="comment">// `reparse_point_data`.</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keyword">const</span> BOOL reparse_data_obtained = ::DeviceIoControl(</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  handle, <span class="comment">// Handle to file or directory.</span></div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  FS
CTL_GET_REPARSE_POINT, <span class="comment">// Gets reparse point data for file/folder.</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keyword">nullptr</span>, <span class="comment">// Ignored.</span></div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  0, <span class="comment">// Ignored.</span></div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  &buffer,</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">sizeof</span>(buffer),</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  &ignored, <span class="comment">// Ignored.</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keyword">nullptr</span>); <span class="commen
t">// Ignored.</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> </div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">if</span> (!reparse_data_obtained) {</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">return</span> <a class="code" href="classWindowsError.html">WindowsError</a>(</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="stringliteral">"'internal::windows::get_symbolic_link_data': 'DeviceIoControl' call "</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="stringliteral">"failed"</span>);</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  }</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div><div c
lass="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceinternal_1_1windows.html#afd9a4ce68b9e02355cf2a92c49828081">build_symbolic_link</a>(buffer);</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span> }</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="comment">// Creates a reparse point with the specified target. The target can be either</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="comment">// a file (in which case a junction is created), or a folder (in which case a</span></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="comment">// mount point is cr
eated).</span></div><div class="line"><a name="l00321"></a><span class="lineno"><a class="line" href="namespaceinternal_1_1windows.html#aeb3eff223f2ea4c2899bcc82d8818334"> 321</a></span> <span class="keyword">inline</span> <a class="code" href="classTry.html">Try<Nothing></a> <a class="code" href="namespaceinternal_1_1windows.html#aeb3eff223f2ea4c2899bcc82d8818334">create_symbolic_link</a>(</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">const</span> std::string& target,</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keyword">const</span> std::string& reparse_point)</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> {</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="comment">// Determine if target is a folder or a file. This makes a difference</span></div><div class="line
"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">// in the way we call `create_symbolic_link`.</span></div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keyword">const</span> <a class="code" href="classTry.html">Try<DWORD></a> attributes = <a class="code" href="namespaceinternal_1_1windows.html#adb5b8a8afe285eb66a0a551f2382d113">get_file_attributes</a>(<a class="code" href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(target));</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordtype">bool</span> target_is_folder = <span class="keyword">false</span>;</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span> (attributes.<a class="code" href="classTry.html#a6543d7
d5db4f298bcd673bf3cd509acc">isSome</a>()) {</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  target_is_folder = attributes.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>() & FILE_ATTRIBUTE_DIRECTORY;</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  }</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">// Bail out if target is already a reparse point.</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <a class="code" href="classTry.html">Try<bool></a> attribute_set = <a class="code" href="namespaceinternal_1_1windows.html#a9205fe9be7dc028375cd24338483152b">reparse_point_attribute_set</a>(<a class="code" href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(tar
get));</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">if</span> (attribute_set.<a class="code" href="classTry.html#a6543d7d5db4f298bcd673bf3cd509acc">isSome</a>() && attribute_set.<a class="code" href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">get</a>()) {</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">return</span> <a class="code" href="classError.html">Error</a>(<span class="stringliteral">"Path '"</span> + target + <span class="stringliteral">"' is already a reparse point"</span>);</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  }</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> </div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  DWORD <a class="code" href="namespaceflags.html">flags</a> = target_is_folder
? SYMBOLIC_LINK_FLAG_DIRECTORY : 0;</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> </div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">// Lambda to create symlink with given flags.</span></div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keyword">auto</span> link = [&reparse_point, &target](<span class="keyword">const</span> DWORD <a class="code" href="decoder_8hpp.html#abb0829cce9dd20a40ae0d86890ae85c6">flags</a>) {</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  return ::CreateSymbolicLinkW(</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">// Path to link.</span></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <a class="code" href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078
380aa1">longpath</a>(reparse_point).data(),</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="comment">// Path to target.</span></div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <a class="code" href="namespaceinternal_1_1windows.html#abd7dbdbc8d95626d0c66455078380aa1">longpath</a>(target).data(),</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  flags);</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  };</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="comment">// `CreateSymbolicLink` normally adjusts the process token's privileges to</span></div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="comment">// allow for symlink creation; h
owever, we explicitly avoid this with the</span></div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">// following flag to not require administrative privileges.</span></div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keywordflow">if</span> (link(flags | SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE)) {</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keywordflow">return</span> <a class="code" href="structNothing.html">Nothing</a>();</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  }</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="comment">// If this failed because the non-symbolic link feature was not supported,</span></div><div class="line"><a name="l00360"></a><s
pan class="lineno"> 360</span>  <span class="comment">// try again without the feature. This is for legacy support.</span></div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span> (::GetLastError() == ERROR_INVALID_PARAMETER) {</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">if</span> (link(flags)) {</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">return</span> <a class="code" href="structNothing.html">Nothing</a>();</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  }</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  }</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> </div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">re
turn</span> <a class="code" href="classWindowsError.html">WindowsError</a>();</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span> }</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span> </div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> } <span class="comment">// namespace windows {</span></div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span> } <span class="comment">// namespace internal {</span></div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="preprocessor">#endif // __STOUT_INTERNAL_WINDOWS_REPARSEPOINT_HPP__</span></div><div class="ttc" id="namespaceinternal_1_1windows_html_a8ee4f75d803d8ed56ce760d8e1dfac14"><div class="ttname"><a href="namespaceinternal_1_1windows.html#a8ee4f75d803d8ed56ce760d8e1dfac14">internal::windows::get_hand
le_no_follow</a></div><div class="ttdeci">Try< SharedHandle > get_handle_no_follow(const std::string &absolute_path)</div><div class="ttdef"><b>Definition:</b> reparsepoint.hpp:215</div></div>
<div class="ttc" id="structNothing_html"><div class="ttname"><a href="structNothing.html">Nothing</a></div><div class="ttdef"><b>Definition:</b> nothing.hpp:16</div></div>
-<div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:35</div></div>
+<div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:36</div></div>
<div class="ttc" id="classTry_html_a8bc7f43e75a47111ea18e9c83b007be5"><div class="ttname"><a href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">Try::get</a></div><div class="ttdeci">T & get()&</div><div class="ttdef"><b>Definition:</b> try.hpp:73</div></div>
<div class="ttc" id="classSharedHandle_html"><div class="ttname"><a href="classSharedHandle.html">SharedHandle</a></div><div class="ttdef"><b>Definition:</b> windows.hpp:72</div></div>
<div class="ttc" id="classTry_html"><div class="ttname"><a href="classTry.html">Try</a></div><div class="ttdef"><b>Definition:</b> check.hpp:33</div></div>
http://git-wip-us.apache.org/repos/asf/mesos-site/blob/d7774475/content/api/latest/c++/resources_8hpp_source.html
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diff --git a/content/api/latest/c++/resources_8hpp_source.html b/content/api/latest/c++/resources_8hpp_source.html
index 8ed5710..a86e568 100644
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+++ b/content/api/latest/c++/resources_8hpp_source.html
@@ -58,7 +58,7 @@
<div class="ttc" id="classmesos_1_1Resources_html_a941fe78c62de3a6fa7c7cf977960694a"><div class="ttname"><a href="classmesos_1_1Resources.html#a941fe78c62de3a6fa7c7cf977960694a">mesos::Resources::size</a></div><div class="ttdeci">size_t size() const </div><div class="ttdef"><b>Definition:</b> resources.hpp:390</div></div>
<div class="ttc" id="classmesos_1_1Resources_html_a6c4d4a889c254fb4241644c6557d511e"><div class="ttname"><a href="classmesos_1_1Resources.html#a6c4d4a889c254fb4241644c6557d511e">mesos::Resources::types</a></div><div class="ttdeci">std::map< std::string, Value_Type > types() const </div></div>
<div class="ttc" id="classmesos_1_1ResourceConversion_html_afa8d5fe5c9c3f6f1588d7df710262080"><div class="ttname"><a href="classmesos_1_1ResourceConversion.html#afa8d5fe5c9c3f6f1588d7df710262080">mesos::ResourceConversion::consumed</a></div><div class="ttdeci">Resources consumed</div><div class="ttdef"><b>Definition:</b> resources.hpp:718</div></div>
-<div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:35</div></div>
+<div class="ttc" id="classError_html"><div class="ttname"><a href="classError.html">Error</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:36</div></div>
<div class="ttc" id="classmesos_1_1Resources_html_a376ffdcf83696b9a957b8a24ce596649"><div class="ttname"><a href="classmesos_1_1Resources.html#a376ffdcf83696b9a957b8a24ce596649">mesos::Resources::names</a></div><div class="ttdeci">std::set< std::string > names() const </div></div>
<div class="ttc" id="classOption_html"><div class="ttname"><a href="classOption.html">Option< Error ></a></div></div>
<div class="ttc" id="classTry_html_a8bc7f43e75a47111ea18e9c83b007be5"><div class="ttname"><a href="classTry.html#a8bc7f43e75a47111ea18e9c83b007be5">Try::get</a></div><div class="ttdeci">T & get()&</div><div class="ttdef"><b>Definition:</b> try.hpp:73</div></div>