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| <section id="rpmsg-file-system"> |
| <h1>RPMSG File System<a class="headerlink" href="#rpmsg-file-system" title="Permalink to this heading"></a></h1> |
| <p>Once RPMsg link is available, we can use rpmsg file system to mount remote directories with the help of RPMsg file system drivers.</p> |
| <p>Here we show an example of mounting and using a master file system path from remote side, it is as easy as using a local file system.</p> |
| <section id="building"> |
| <h2>Building<a class="headerlink" href="#building" title="Permalink to this heading"></a></h2> |
| <p>At file system server side (the master), we need enable the <code class="docutils literal notranslate"><span class="pre">CONFIG_FS_RPMSGFS_SERVER</span></code> configuration.</p> |
| <p>At file system client side (the remote), we need enable the <code class="docutils literal notranslate"><span class="pre">CONFIG_FS_RPMSGFS</span></code> configuration.</p> |
| <p>Then we build the two sides accordingly.</p> |
| </section> |
| <section id="running"> |
| <h2>Running<a class="headerlink" href="#running" title="Permalink to this heading"></a></h2> |
| <p>Using the following command to mount the master’s <code class="docutils literal notranslate"><span class="pre">/proc</span></code> file system to <code class="docutils literal notranslate"><span class="pre">/proc.master</span></code> from the <code class="docutils literal notranslate"><span class="pre">nsh</span></code> sessino of the remote node.</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">remote> mount -t rpmsgfs -o cpu=master,fs=/proc /proc.master</span> |
| <span class="go">remote> cat /proc/uptime /proc.master/uptime</span> |
| <span class="go"> 39.06</span> |
| <span class="go"> 39.06</span> |
| <span class="go">remote></span> |
| </pre></div> |
| </div> |
| <p>Note the <code class="docutils literal notranslate"><span class="pre">-o</span> <span class="pre">cpu=master,fs=/proc</span></code> specifies the <code class="docutils literal notranslate"><span class="pre">master</span></code> node’s <code class="docutils literal notranslate"><span class="pre">/proc</span></code> path as the source, the <code class="docutils literal notranslate"><span class="pre">/proc.master</span></code> is the mount point at remote side. All files under that mount point is actually hosted at the master side. The <code class="docutils literal notranslate"><span class="pre">-t</span> <span class="pre">rpmsgfs</span></code> selects the RPMsg file system driver to serve the operation.</p> |
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