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diff --git a/man/sd_watchdog_enabled.html b/man/sd_watchdog_enabled.html index 48d75b71cd..e48ecb170e 100644 --- a/man/sd_watchdog_enabled.html +++ b/man/sd_watchdog_enabled.html @@ -18,8 +18,8 @@ </style><a href="index.html">Index </a>· <a href="systemd.directives.html">Directives </a>· <a href="../python-systemd/index.html">Python </a>· - <a href="../libudev/index.html">libudev </a>· - <a href="../libudev/index.html">gudev </a><span style="float:right">systemd 220</span><hr><div class="refentry"><a name="sd_watchdog_enabled"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sd_watchdog_enabled — Check whether the service manager expects watchdog keep-alive notifications from a service</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include <systemd/sd-daemon.h></pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_watchdog_enabled</b>(</code></td><td>int <var class="pdparam">unset_environment</var>, </td></tr><tr><td> </td><td>uint64_t *<var class="pdparam">usec</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm140240257600000"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><code class="function">sd_watchdog_enabled()</code> may be called by + + <span style="float:right">systemd 221</span><hr><div class="refentry"><a name="sd_watchdog_enabled"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>sd_watchdog_enabled — Check whether the service manager expects watchdog keep-alive notifications from a service</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include <systemd/sd-daemon.h></pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">sd_watchdog_enabled</b>(</code></td><td>int <var class="pdparam">unset_environment</var>, </td></tr><tr><td> </td><td>uint64_t *<var class="pdparam">usec</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm47737450865984"></a><h2 id="Description">Description<a class="headerlink" title="Permalink to this headline" href="#Description">¶</a></h2><p><code class="function">sd_watchdog_enabled()</code> may be called by a service to detect whether the service manager expects regular keep-alive watchdog notification events from it, and the timeout after which the manager will act on the service if it did not get @@ -46,12 +46,12 @@ in µs for the watchdog logic to it.</p><p>To enable service supervision with the watchdog logic, use <code class="varname">WatchdogSec=</code> in service files. See <a href="systemd.service.html"><span class="citerefentry"><span class="refentrytitle">systemd.service</span>(5)</span></a> - for details.</p></div><div class="refsect1"><a name="idm140240252691088"></a><h2 id="Return Value">Return Value<a class="headerlink" title="Permalink to this headline" href="#Return%20Value">¶</a></h2><p>On failure, this call returns a negative errno-style error + for details.</p></div><div class="refsect1"><a name="idm47737450067568"></a><h2 id="Return Value">Return Value<a class="headerlink" title="Permalink to this headline" href="#Return%20Value">¶</a></h2><p>On failure, this call returns a negative errno-style error code. If the service manager expects watchdog keep-alive notification messages to be sent, > 0 is returned, otherwise 0 is returned. Only if the return value is > 0, the <em class="parameter"><code>usec</code></em> parameter is valid after the - call.</p></div><div class="refsect1"><a name="idm140240252688976"></a><h2 id="Notes">Notes<a class="headerlink" title="Permalink to this headline" href="#Notes">¶</a></h2><p><a name="pkgconfig-text"></a>These APIs are implemented as a shared + call.</p></div><div class="refsect1"><a name="idm47737450065456"></a><h2 id="Notes">Notes<a class="headerlink" title="Permalink to this headline" href="#Notes">¶</a></h2><p><a name="pkgconfig-text"></a>These APIs are implemented as a shared library, which can be compiled and linked to with the <code class="constant">libsystemd</code> <a href="http://linux.die.net/man/1/pkg-config"><span class="citerefentry"><span class="refentrytitle">pkg-config</span>(1)</span></a> file.</p><p>Internally, this functions parses the @@ -60,17 +60,17 @@ will ignore these variables if <code class="varname">$WATCHDOG_PID</code> does not contain the PID of the current process, under the assumption that in that case, the variables were set for a - different process further up the process tree.</p></div><div class="refsect1"><a name="idm140240252685744"></a><h2 id="Environment">Environment<a class="headerlink" title="Permalink to this headline" href="#Environment">¶</a></h2><div class="variablelist"><dl class="variablelist"><dt id="$WATCHDOG_PID"><span class="term"><code class="varname">$WATCHDOG_PID</code></span><a class="headerlink" title="Permalink to this term" href="#%24WATCHDOG_PID">¶</a></dt><dd><p>Set by the system manager for supervised + different process further up the process tree.</p></div><div class="refsect1"><a name="idm47737450062224"></a><h2 id="Environment">Environment<a class="headerlink" title="Permalink to this headline" href="#Environment">¶</a></h2><div class="variablelist"><dl class="variablelist"><dt id="$WATCHDOG_PID"><span class="term"><code class="varname">$WATCHDOG_PID</code></span><a class="headerlink" title="Permalink to this term" href="#%24WATCHDOG_PID">¶</a></dt><dd><p>Set by the system manager for supervised process for which watchdog support is enabled, and contains the PID of that process. See above for details.</p></dd><dt id="$WATCHDOG_USEC"><span class="term"><code class="varname">$WATCHDOG_USEC</code></span><a class="headerlink" title="Permalink to this term" href="#%24WATCHDOG_USEC">¶</a></dt><dd><p>Set by the system manager for supervised process for which watchdog support is enabled, and contains the watchdog timeout in µs See above for - details.</p></dd></dl></div></div><div class="refsect1"><a name="idm140240252680976"></a><h2 id="History">History<a class="headerlink" title="Permalink to this headline" href="#History">¶</a></h2><p>The watchdog functionality and the + details.</p></dd></dl></div></div><div class="refsect1"><a name="idm47737450057456"></a><h2 id="History">History<a class="headerlink" title="Permalink to this headline" href="#History">¶</a></h2><p>The watchdog functionality and the <code class="varname">$WATCHDOG_USEC</code> variable were added in systemd-41.</p><p><code class="function">sd_watchdog_enabled()</code> function was added in systemd-209. Since that version the - <code class="varname">$WATCHDOG_PID</code> variable is also set.</p></div><div class="refsect1"><a name="idm140240252678176"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> + <code class="varname">$WATCHDOG_PID</code> variable is also set.</p></div><div class="refsect1"><a name="idm47737450054656"></a><h2 id="See Also">See Also<a class="headerlink" title="Permalink to this headline" href="#See%20Also">¶</a></h2><p> <a href="systemd.html"><span class="citerefentry"><span class="refentrytitle">systemd</span>(1)</span></a>, <a href="sd-daemon.html"><span class="citerefentry"><span class="refentrytitle">sd-daemon</span>(3)</span></a>, <a href="daemon.html"><span class="citerefentry"><span class="refentrytitle">daemon</span>(7)</span></a>, |