lxcapi_snapshot: check that c is defined

before using it, like the other snapshot api methods do. This will need to go into stable-1.0 as well. Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com> Acked-by: Stéphane Graber <stgraber@ubuntu.com>

lxcapi_snapshot: check that c is defined
2e8b4ddb · Serge Hallyn · Stéphane Graber · d63b7ba4 · 2e8b4ddb
Commit 2e8b4ddb authored Jun 03, 2014 by Serge Hallyn Committed by Stéphane Graber Jun 04, 2014
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lxccontainer.c src/lxc/lxccontainer.c +3 -0

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--- a/src/lxc/lxccontainer.c
+++ b/src/lxc/lxccontainer.c
@@ -2859,6 +2859,9 @@ static int lxcapi_snapshot(struct lxc_container *c, const char *commentfile)
 	struct lxc_container *c2;
 	char snappath[MAXPATHLEN], newname[20];

+	if (!c || !lxcapi_is_defined(c))
+		return -1;
+
 	// /var/lib/lxc -> /var/lib/lxcsnaps \0
 	ret = snprintf(snappath, MAXPATHLEN, "%ssnaps/%s", c->config_path, c->name);
 	if (ret < 0 || ret >= MAXPATHLEN)