LXC: check whether we get MemSwap[Total|Usage]

Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>

diff --git a/src/lxc/lxc_cgroup.c b/src/lxc/lxc_cgroup.c
index 8dfdc60d462aabe833dca15021bf2fd3968cc51a..39e30ad21e5a016ac054dbe002f9673dd4c970b1 100644 (file)
--- a/src/lxc/lxc_cgroup.c
+++ b/src/lxc/lxc_cgroup.c
@@ -288,8 +288,11 @@ int virLXCCgroupGetMeminfo(virLXCMeminfoPtr meminfo)
     if (virLXCCgroupGetMemUsage(cgroup, meminfo) < 0)
         goto cleanup;
 
-    virLXCCgroupGetMemSwapTotal(cgroup, meminfo);
-    virLXCCgroupGetMemSwapUsage(cgroup, meminfo);
+    if (virLXCCgroupGetMemSwapTotal(cgroup, meminfo) < 0)
+        goto cleanup;
+
+    if (virLXCCgroupGetMemSwapUsage(cgroup, meminfo) < 0)
+        goto cleanup;
 
     ret = 0;
  cleanup: