[libvirt] [PATCH 5/6] lxc: Avoid possible NULL dereference on *root prior to opendir().
If running on older Linux without mounted cgroups then its possible that
*root would be NULL.
---
src/lxc/lxc_container.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index d3a2968..d234426 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -1762,6 +1762,12 @@ static int lxcContainerIdentifyCGroups(struct lxcContainerCGroup
**mountsret,
VIR_DEBUG("Grabbed '%s'", mntent.mnt_dir);
}
+ if (!*root) {
+ VIR_DEBUG("No mounted cgroups found");
+ ret = 0;
+ goto cleanup;
+ }
+
VIR_DEBUG("Checking for symlinks in %s", *root);
if (!(dh = opendir(*root))) {
virReportSystemError(errno,
--
1.7.11.7