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<li>terminatorlib.cwd</li>
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<h1>Source code for terminatorlib.cwd</h1><div class="highlight"><pre>
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<span class="c">#!/usr/bin/python</span>
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<span class="c"># Terminator by Chris Jones <cmsj@tenshu.net></span>
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<span class="c"># GPL v2 only</span>
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<span class="sd">"""cwd.py - function necessary to get the cwd for a given pid on various OSes</span>
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<span class="sd">>>> cwd = get_default_cwd()</span>
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<span class="sd">>>> cwd.__class__.__name__</span>
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<span class="sd">'str'</span>
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<span class="sd">>>> func = get_pid_cwd()</span>
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<span class="sd">>>> func.__class__.__name__</span>
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<span class="sd">'function'</span>
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<span class="sd">"""</span>
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<span class="kn">import</span> <span class="nn">platform</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="kn">import</span> <span class="nn">pwd</span>
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<span class="kn">from</span> <span class="nn">util</span> <span class="kn">import</span> <span class="n">dbg</span><span class="p">,</span> <span class="n">err</span>
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<div class="viewcode-block" id="get_default_cwd"><a class="viewcode-back" href="../../terminatorlib.html#terminatorlib.cwd.get_default_cwd">[docs]</a><span class="k">def</span> <span class="nf">get_default_cwd</span><span class="p">():</span>
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<span class="sd">"""Determine a reasonable default cwd"""</span>
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<span class="n">cwd</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">getcwd</span><span class="p">()</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">cwd</span><span class="p">)</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isdir</span><span class="p">(</span><span class="n">cwd</span><span class="p">):</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="n">cwd</span> <span class="o">=</span> <span class="n">pwd</span><span class="o">.</span><span class="n">getpwuid</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">getuid</span><span class="p">())[</span><span class="mi">5</span><span class="p">]</span>
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<span class="k">except</span> <span class="ne">KeyError</span><span class="p">:</span>
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<span class="n">cwd</span> <span class="o">=</span> <span class="s">'/'</span>
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<span class="k">return</span><span class="p">(</span><span class="n">cwd</span><span class="p">)</span>
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<div class="viewcode-block" id="get_pid_cwd"><a class="viewcode-back" href="../../terminatorlib.html#terminatorlib.cwd.get_pid_cwd">[docs]</a><span class="k">def</span> <span class="nf">get_pid_cwd</span><span class="p">():</span>
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<span class="sd">"""Determine an appropriate cwd function for the OS we are running on"""</span>
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<span class="n">func</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">pid</span><span class="p">:</span> <span class="bp">None</span>
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<span class="n">system</span> <span class="o">=</span> <span class="n">platform</span><span class="o">.</span><span class="n">system</span><span class="p">()</span>
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<span class="k">if</span> <span class="n">system</span> <span class="o">==</span> <span class="s">'Linux'</span><span class="p">:</span>
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<span class="n">dbg</span><span class="p">(</span><span class="s">'Using Linux get_pid_cwd'</span><span class="p">)</span>
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<span class="n">func</span> <span class="o">=</span> <span class="n">linux_get_pid_cwd</span>
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<span class="k">elif</span> <span class="n">system</span> <span class="o">==</span> <span class="s">'FreeBSD'</span><span class="p">:</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="kn">import</span> <span class="nn">freebsd</span>
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<span class="n">func</span> <span class="o">=</span> <span class="n">freebsd</span><span class="o">.</span><span class="n">get_process_cwd</span>
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<span class="n">dbg</span><span class="p">(</span><span class="s">'Using FreeBSD get_pid_cwd'</span><span class="p">)</span>
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<span class="k">except</span> <span class="p">(</span><span class="ne">OSError</span><span class="p">,</span> <span class="ne">NotImplementedError</span><span class="p">,</span> <span class="ne">ImportError</span><span class="p">):</span>
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<span class="n">dbg</span><span class="p">(</span><span class="s">'FreeBSD version too old for get_pid_cwd'</span><span class="p">)</span>
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<span class="k">elif</span> <span class="n">system</span> <span class="o">==</span> <span class="s">'SunOS'</span><span class="p">:</span>
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<span class="n">dbg</span><span class="p">(</span><span class="s">'Using SunOS get_pid_cwd'</span><span class="p">)</span>
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<span class="n">func</span> <span class="o">=</span> <span class="n">sunos_get_pid_cwd</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="n">dbg</span><span class="p">(</span><span class="s">'Unable to determine a get_pid_cwd for OS: </span><span class="si">%s</span><span class="s">'</span> <span class="o">%</span> <span class="n">system</span><span class="p">)</span>
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<span class="k">return</span><span class="p">(</span><span class="n">func</span><span class="p">)</span>
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<div class="viewcode-block" id="proc_get_pid_cwd"><a class="viewcode-back" href="../../terminatorlib.html#terminatorlib.cwd.proc_get_pid_cwd">[docs]</a><span class="k">def</span> <span class="nf">proc_get_pid_cwd</span><span class="p">(</span><span class="n">pid</span><span class="p">,</span> <span class="n">path</span><span class="p">):</span>
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<span class="sd">"""Extract the cwd of a PID from proc, given the PID and the /proc path to</span>
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<span class="sd"> insert it into, e.g. /proc/%s/cwd"""</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="n">cwd</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">realpath</span><span class="p">(</span><span class="n">path</span> <span class="o">%</span> <span class="n">pid</span><span class="p">)</span>
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<span class="k">except</span> <span class="ne">Exception</span><span class="p">,</span> <span class="n">ex</span><span class="p">:</span>
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<span class="n">err</span><span class="p">(</span><span class="s">'Unable to get cwd for PID </span><span class="si">%s</span><span class="s">: </span><span class="si">%s</span><span class="s">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">pid</span><span class="p">,</span> <span class="n">ex</span><span class="p">))</span>
227
<span class="n">cwd</span> <span class="o">=</span> <span class="s">'/'</span>
229
<span class="k">return</span><span class="p">(</span><span class="n">cwd</span><span class="p">)</span>
231
<div class="viewcode-block" id="linux_get_pid_cwd"><a class="viewcode-back" href="../../terminatorlib.html#terminatorlib.cwd.linux_get_pid_cwd">[docs]</a><span class="k">def</span> <span class="nf">linux_get_pid_cwd</span><span class="p">(</span><span class="n">pid</span><span class="p">):</span>
232
<span class="sd">"""Determine the cwd for a given PID on Linux kernels"""</span>
233
<span class="k">return</span><span class="p">(</span><span class="n">proc_get_pid_cwd</span><span class="p">(</span><span class="n">pid</span><span class="p">,</span> <span class="s">'/proc/</span><span class="si">%s</span><span class="s">/cwd'</span><span class="p">))</span>
235
<div class="viewcode-block" id="sunos_get_pid_cwd"><a class="viewcode-back" href="../../terminatorlib.html#terminatorlib.cwd.sunos_get_pid_cwd">[docs]</a><span class="k">def</span> <span class="nf">sunos_get_pid_cwd</span><span class="p">(</span><span class="n">pid</span><span class="p">):</span>
236
<span class="sd">"""Determine the cwd for a given PID on SunOS kernels"""</span>
237
<span class="k">return</span><span class="p">(</span><span class="n">proc_get_pid_cwd</span><span class="p">(</span><span class="n">pid</span><span class="p">,</span> <span class="s">'/proc/</span><span class="si">%s</span><span class="s">/path/cwd'</span><span class="p">))</span>
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<span class="c"># vim: set expandtab ts=4 sw=4:</span></div>
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