security_task_fix_setgid
int security_task_fix_setgid(struct cred *new, const struct cred *old,
retval = security_task_fix_setgid(new, old, LSM_SETID_RE);
retval = security_task_fix_setgid(new, old, LSM_SETID_ID);
retval = security_task_fix_setgid(new, old, LSM_SETID_RES);
if (security_task_fix_setgid(new,old,LSM_SETID_FS) == 0)