add missing arg test to theree api functions

add missing arg test to theree api functions

Signed-off-by: Ivana Hutarova Varekova <varekova@redhat.com>
Signed-off-by: Jan Safranek <jsafrane@redhat.com>

diff --git a/src/api.c b/src/api.c
index 2905fed84b5863b3c1271ae29e0ee67214408a2a..53c76e89f9bf9188a6ea55f66698b22f33c0b591 100644 (file)
--- a/src/api.c
+++ b/src/api.c
@@ -3650,6 +3650,9 @@ int cgroup_get_subsys_mount_point(const char *controller, char **mount_point)
        if (!cgroup_initialized)
                return ECGROUPNOTINITIALIZED;
 
+       if (!controller)
+               return ECGINVAL;
+
        pthread_rwlock_rdlock(&cg_mount_table_lock);
        for (i = 0; cg_mount_table[i].name[0] != '\0'; i++) {
                if (strncmp(cg_mount_table[i].name, controller, FILENAME_MAX))
@@ -3913,6 +3916,10 @@ int cgroup_dictionary_iterator_next(void **handle,
                return ECGINVAL;
 
        iter = *handle;
+
+       if (!iter)
+               return ECGINVAL;
+
        if (!iter->item)
                return ECGEOF;