cgroups: vet parameters

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
lxc · Feb 2, 2021 · b57f9b1 · b57f9b1
1 parent bfe2971
commit b57f9b1
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c
@@ -3597,6 +3597,9 @@ bool cgroup_freeze(const char *name, const char *lxcpath, int timeout)
 	__do_close int unified_fd = -EBADF;
 	int ret;
 
+	if (is_empty_string(name) || is_empty_string(lxcpath))
+		return ret_errno(EINVAL);
+
 	unified_fd = lxc_cmd_get_cgroup2_fd(name, lxcpath);
 	if (unified_fd < 0)
 		return ret_errno(ENOCGROUP2);
@@ -3614,6 +3617,9 @@ bool cgroup_unfreeze(const char *name, const char *lxcpath, int timeout)
 	__do_close int unified_fd = -EBADF;
 	int ret;
 
+	if (is_empty_string(name) || is_empty_string(lxcpath))
+		return ret_errno(EINVAL);
+
 	unified_fd = lxc_cmd_get_cgroup2_fd(name, lxcpath);
 	if (unified_fd < 0)
 		return ret_errno(ENOCGROUP2);