- {
- if (copy_shmid_from_user (&setbuf, buf, version)) {
- err = -EFAULT;
- goto out;
- }
- mutex_lock(&shm_ids(ns).mutex);
- shp = shm_lock(ns, shmid);
- err=-EINVAL;
- if(shp==NULL)
- goto out_up;
- err = shm_checkid(ns, shp,shmid);
- if(err)
- goto out_unlock_up;
- err = audit_ipc_obj(&(shp->shm_perm));
- if (err)
- goto out_unlock_up;
- err = audit_ipc_set_perm(0, setbuf.uid, setbuf.gid, setbuf.mode);
- if (err)
- goto out_unlock_up;
- err=-EPERM;
- if (current->euid != shp->shm_perm.uid &&
- current->euid != shp->shm_perm.cuid &&
- !capable(CAP_SYS_ADMIN)) {
- goto out_unlock_up;
- }
-
- err = security_shm_shmctl(shp, cmd);
- if (err)
- goto out_unlock_up;
-
- shp->shm_perm.uid = setbuf.uid;
- shp->shm_perm.gid = setbuf.gid;
- shp->shm_perm.mode = (shp->shm_perm.mode & ~S_IRWXUGO)
- | (setbuf.mode & S_IRWXUGO);
- shp->shm_ctim = get_seconds();
- break;
- }
-
+ err = shmctl_down(ns, shmid, cmd, buf, version);
+ return err;