From: Stéphane Graber <stgraber@ubuntu.com>
Date: Thu, 3 Dec 2015 05:52:58 +0000 (-0500)
Subject: Export LXC_TARGET env variable in stop hook
X-Git-Tag: lxc-2.0.0.beta1~43
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c154af98c17b3584ccafb88b10c8f861eed91093;p=thirdparty%2Flxc.git

Export LXC_TARGET env variable in stop hook

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
Acked-by: Serge E. Hallyn <serge.hallyn@ubuntu.com>
---

diff --git a/doc/lxc.container.conf.sgml.in b/doc/lxc.container.conf.sgml.in
index 90ffefa3c..7a8c6e056 100644
--- a/doc/lxc.container.conf.sgml.in
+++ b/doc/lxc.container.conf.sgml.in
@@ -1566,7 +1566,19 @@ mknod errno 0
           </listitem>
         </varlistentry>
       </variablelist>
-
+      <variablelist>
+        <varlistentry>
+          <term>
+            <option>LXC_TARGET</option>
+          </term>
+          <listitem>
+            <para>
+              Only for the stop hook. Is set to "stop" for a container
+              shutdown or "reboot" for a container reboot.
+            </para>
+          </listitem>
+        </varlistentry>
+      </variablelist>
     </refsect2>
     <refsect2>
     <title>Logging</title>
diff --git a/src/lxc/start.c b/src/lxc/start.c
index fa64b6dcf..2606dd1d6 100644
--- a/src/lxc/start.c
+++ b/src/lxc/start.c
@@ -522,8 +522,17 @@ void lxc_fini(const char *name, struct lxc_handler *handler)
 		}
 	}
 	namespaces[namespace_count] = NULL;
+
+	if (handler->conf->reboot && setenv("LXC_TARGET", "reboot", 1)) {
+		SYSERROR("failed to set environment variable for stop target");
+	}
+	if (!handler->conf->reboot && setenv("LXC_TARGET", "stop", 1)) {
+		SYSERROR("failed to set environment variable for stop target");
+	}
+
 	if (run_lxc_hooks(name, "stop", handler->conf, handler->lxcpath, namespaces))
 		ERROR("failed to run stop hooks for container '%s'.", name);
+
 	while (namespace_count--)
 		free(namespaces[namespace_count]);
 	for (i = 0; i < LXC_NS_MAX; i++) {