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<div class="title">chown.hpp</div> </div>
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<a href="chown_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>&#160;<span class="comment">// Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<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>&#160;<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>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<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>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<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>&#160;<span class="comment">// distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<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>&#160;<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>&#160;<span class="comment">// limitations under the License.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#ifndef __STOUT_OS_POSIX_CHOWN_HPP__</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define __STOUT_OS_POSIX_CHOWN_HPP__</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;fts.h&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#include &lt;sys/types.h&gt;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &lt;pwd.h&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="error_8hpp.html">stout/error.hpp</a>&gt;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="nothing_8hpp.html">stout/nothing.hpp</a>&gt;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="try_8hpp.html">stout/try.hpp</a>&gt;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="shell_8hpp.html">stout/os/shell.hpp</a>&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="stat_8hpp.html">stout/os/stat.hpp</a>&gt;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="keyword">namespace </span>os {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// Set the ownership for a path. This function never follows any symlinks.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="namespaceos.html#a9ea4b5bd8ccef02c74ceb9b4a497baab"> 30</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;Nothing&gt;</a> <a class="code" href="namespaceos.html#a9ea4b5bd8ccef02c74ceb9b4a497baab">chown</a>(</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#afc544433253791fc5f87b8203c9b6e63">uid_t</a> <a class="code" href="namespaceos_1_1stat.html#ac2b3167963d5e471301e1ace772b67f6">uid</a>,</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <a class="code" href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#a78ecefd3a9f3f0c110b9f6f038b690eb">gid_t</a> gid,</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keyword">const</span> std::string&amp; path,</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; <span class="keywordtype">bool</span> recursive)</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;{</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keywordtype">char</span>* path_[] = {<span class="keyword">const_cast&lt;</span><span class="keywordtype">char</span>*<span class="keyword">&gt;</span>(path.c_str()), <span class="keyword">nullptr</span>};</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; FTS* tree = ::fts_open(</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; path_, FTS_NOCHDIR | FTS_PHYSICAL, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordflow">if</span> (tree == <span class="keyword">nullptr</span>) {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>();</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; }</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; FTSENT *node;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">while</span> ((node = ::fts_read(tree)) != <span class="keyword">nullptr</span>) {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; <span class="keywordflow">switch</span> (node-&gt;fts_info) {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; <span class="comment">// Preorder directory.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">case</span> FTS_D:</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; <span class="comment">// Regular file.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keywordflow">case</span> FTS_F:</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="comment">// Symbolic link.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">case</span> FTS_SL:</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="comment">// Symbolic link without target.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="keywordflow">case</span> FTS_SLNONE: {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordflow">if</span> (::lchown(node-&gt;fts_path, uid, gid) &lt; 0) {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <a class="code" href="classError.html">Error</a> <a class="code" href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">error</a> = <a class="code" href="classErrnoError.html">ErrnoError</a>();</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; ::fts_close(tree);</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">error</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="comment">// Unreadable directory.</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordflow">case</span> FTS_DNR:</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="comment">// Error; errno is set.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">case</span> FTS_ERR:</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="comment">// Directory that causes cycles.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">case</span> FTS_DC:</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; <span class="comment">// `stat(2)` failed.</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="keywordflow">case</span> FTS_NS: {</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <a class="code" href="classError.html">Error</a> <a class="code" href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">error</a> = <a class="code" href="classErrnoError.html">ErrnoError</a>();</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; ::fts_close(tree);</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">error</a>;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; }</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; <span class="keywordflow">if</span> (node-&gt;fts_level == FTS_ROOTLEVEL &amp;&amp; !recursive) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; ::fts_close(tree);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">return</span> <a class="code" href="structNothing.html">Nothing</a>();</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;}</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;<span class="comment">// Changes the specified path&#39;s user and group ownership to that of</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;<span class="comment">// the specified user.</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="namespaceos.html#a6170f18a0d87c3875d6f410b38919223"> 94</a></span>&#160;<span class="keyword">inline</span> <a class="code" href="classTry.html">Try&lt;Nothing&gt;</a> <a class="code" href="namespaceos.html#a9ea4b5bd8ccef02c74ceb9b4a497baab">chown</a>(</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keyword">const</span> std::string&amp; <a class="code" href="namespaceos.html#a698aa27e5ea6b1dc1c190b978c2f7960">user</a>,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keyword">const</span> std::string&amp; path,</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="keywordtype">bool</span> recursive = <span class="keyword">true</span>)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;{</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <a class="code" href="structpasswd.html">passwd</a>* <a class="code" href="structpasswd.html">passwd</a>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">if</span> ((passwd = ::getpwnam(user.c_str())) == <span class="keyword">nullptr</span>) {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">return</span> <a class="code" href="classErrnoError.html">ErrnoError</a>(<span class="stringliteral">&quot;Failed to get user information for &#39;&quot;</span> + user + <span class="stringliteral">&quot;&#39;&quot;</span>);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">return</span> <a class="code" href="namespaceos.html#a9ea4b5bd8ccef02c74ceb9b4a497baab">chown</a>(passwd-&gt;<a class="code" href="structpasswd.html#aa6e0e62ee3cf5152f2697a0104f627c1">pw_uid</a>, passwd-&gt;<a class="code" href="structpasswd.html#aefbacfb7dc7f7f47313d08707253e4c6">pw_gid</a>, path, recursive);</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;} <span class="comment">// namespace os {</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;<span class="preprocessor">#endif // __STOUT_OS_POSIX_CHOWN_HPP__</span></div>
<div class="ttc" id="namespaceos_1_1stat_html_ac2b3167963d5e471301e1ace772b67f6"><div class="ttname"><a href="namespaceos_1_1stat.html#ac2b3167963d5e471301e1ace772b67f6">os::stat::uid</a></div><div class="ttdeci">Try&lt; uid_t &gt; uid(const std::string &amp;path, const FollowSymlink follow=FOLLOW_SYMLINK)</div><div class="ttdef"><b>Definition:</b> stat.hpp:170</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="classTry_html"><div class="ttname"><a href="classTry.html">Try</a></div><div class="ttdef"><b>Definition:</b> try.hpp:34</div></div>
<div class="ttc" id="namespaceos_html_a698aa27e5ea6b1dc1c190b978c2f7960"><div class="ttname"><a href="namespaceos.html#a698aa27e5ea6b1dc1c190b978c2f7960">os::user</a></div><div class="ttdeci">Result&lt; std::string &gt; user(Option&lt; uid_t &gt; uid=None())</div><div class="ttdef"><b>Definition:</b> su.hpp:277</div></div>
<div class="ttc" id="classErrnoError_html"><div class="ttname"><a href="classErrnoError.html">ErrnoError</a></div><div class="ttdef"><b>Definition:</b> errorbase.hpp:44</div></div>
<div class="ttc" id="structpasswd_html_aefbacfb7dc7f7f47313d08707253e4c6"><div class="ttname"><a href="structpasswd.html#aefbacfb7dc7f7f47313d08707253e4c6">passwd::pw_gid</a></div><div class="ttdeci">gid_t pw_gid</div><div class="ttdef"><b>Definition:</b> pwd.hpp:30</div></div>
<div class="ttc" id="nothing_8hpp_html"><div class="ttname"><a href="nothing_8hpp.html">nothing.hpp</a></div></div>
<div class="ttc" id="structpasswd_html_aa6e0e62ee3cf5152f2697a0104f627c1"><div class="ttname"><a href="structpasswd.html#aa6e0e62ee3cf5152f2697a0104f627c1">passwd::pw_uid</a></div><div class="ttdeci">uid_t pw_uid</div><div class="ttdef"><b>Definition:</b> pwd.hpp:29</div></div>
<div class="ttc" id="3rdparty_2stout_2include_2stout_2windows_8hpp_html_afc544433253791fc5f87b8203c9b6e63"><div class="ttname"><a href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#afc544433253791fc5f87b8203c9b6e63">uid_t</a></div><div class="ttdeci">int uid_t</div><div class="ttdef"><b>Definition:</b> windows.hpp:173</div></div>
<div class="ttc" id="structpasswd_html"><div class="ttname"><a href="structpasswd.html">passwd</a></div><div class="ttdef"><b>Definition:</b> pwd.hpp:26</div></div>
<div class="ttc" id="error_8hpp_html"><div class="ttname"><a href="error_8hpp.html">error.hpp</a></div></div>
<div class="ttc" id="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec_html_ae58e703656ab4a1bd5d9870441236727"><div class="ttname"><a href="namespacemesos_1_1internal_1_1slave_1_1cni_1_1spec.html#ae58e703656ab4a1bd5d9870441236727">mesos::internal::slave::cni::spec::error</a></div><div class="ttdeci">std::string error(const std::string &amp;msg, uint32_t code)</div></div>
<div class="ttc" id="try_8hpp_html"><div class="ttname"><a href="try_8hpp.html">try.hpp</a></div></div>
<div class="ttc" id="namespaceos_html_a9ea4b5bd8ccef02c74ceb9b4a497baab"><div class="ttname"><a href="namespaceos.html#a9ea4b5bd8ccef02c74ceb9b4a497baab">os::chown</a></div><div class="ttdeci">Try&lt; Nothing &gt; chown(uid_t uid, gid_t gid, const std::string &amp;path, bool recursive)</div><div class="ttdef"><b>Definition:</b> chown.hpp:30</div></div>
<div class="ttc" id="stat_8hpp_html"><div class="ttname"><a href="stat_8hpp.html">stat.hpp</a></div></div>
<div class="ttc" id="shell_8hpp_html"><div class="ttname"><a href="shell_8hpp.html">shell.hpp</a></div></div>
<div class="ttc" id="3rdparty_2stout_2include_2stout_2windows_8hpp_html_a78ecefd3a9f3f0c110b9f6f038b690eb"><div class="ttname"><a href="3rdparty_2stout_2include_2stout_2windows_8hpp.html#a78ecefd3a9f3f0c110b9f6f038b690eb">gid_t</a></div><div class="ttdeci">int gid_t</div><div class="ttdef"><b>Definition:</b> windows.hpp:174</div></div>
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