linux-master/ipc/msg.c

50 	struct kern_ipc_perm q_perm;
109 	return container_of(ipcp, struct msg_queue, q_perm);
120 	return container_of(ipcp, struct msg_queue, q_perm);
125 	ipc_rmid(&msg_ids(ns), &s->q_perm);
131 	struct msg_queue *msq = container_of(p, struct msg_queue, q_perm);
133 	security_msg_queue_free(&msq->q_perm);
155 	msq->q_perm.mode = msgflg & S_IRWXUGO;
156 	msq->q_perm.key = key;
158 	msq->q_perm.security = NULL;
159 	retval = security_msg_queue_alloc(&msq->q_perm);
175 	retval = ipc_addid(&msg_ids(ns), &msq->q_perm, ns->msg_ctlmni);
177 		ipc_rcu_putref(&msq->q_perm, msg_rcu_free);
181 	ipc_unlock_object(&msq->q_perm);
184 	return msq->q_perm.id;
275 	__releases(&msq->q_perm)
278 	struct msg_queue *msq = container_of(ipcp, struct msg_queue, q_perm);
284 	ipc_unlock_object(&msq->q_perm);
295 	ipc_rcu_putref(&msq->q_perm, msg_rcu_free);
418 	msq = container_of(ipcp, struct msg_queue, q_perm);
420 	err = security_msg_queue_msgctl(&msq->q_perm, cmd);
426 		ipc_lock_object(&msq->q_perm);
440 		ipc_lock_object(&msq->q_perm);
458 		ipc_unlock_object(&msq->q_perm);
469 	ipc_unlock_object(&msq->q_perm);
543 		audit_ipc_obj(&msq->q_perm);
546 		if (ipcperms(ns, &msq->q_perm, S_IRUGO))
550 	err = security_msg_queue_msgctl(&msq->q_perm, cmd);
554 	ipc_lock_object(&msq->q_perm);
556 	if (!ipc_valid_object(&msq->q_perm)) {
557 		ipc_unlock_object(&msq->q_perm);
562 	kernel_to_ipc64_perm(&msq->q_perm, &p->msg_perm);
588 		err = msq->q_perm.id;
591 	ipc_unlock_object(&msq->q_perm);
823 		    !security_msg_queue_msgrcv(&msq->q_perm, msg, msr->r_tsk,
878 	ipc_lock_object(&msq->q_perm);
884 		if (ipcperms(ns, &msq->q_perm, S_IWUGO))
888 		if (!ipc_valid_object(&msq->q_perm)) {
893 		err = security_msg_queue_msgsnd(&msq->q_perm, msg, msgflg);
909 		if (!ipc_rcu_getref(&msq->q_perm)) {
914 		ipc_unlock_object(&msq->q_perm);
919 		ipc_lock_object(&msq->q_perm);
921 		ipc_rcu_putref(&msq->q_perm, msg_rcu_free);
923 		if (!ipc_valid_object(&msq->q_perm)) {
952 	ipc_unlock_object(&msq->q_perm);
1081 		    !security_msg_queue_msgrcv(&msq->q_perm, msg, current,
1133 		if (ipcperms(ns, &msq->q_perm, S_IRUGO))
1136 		ipc_lock_object(&msq->q_perm);
1139 		if (!ipc_valid_object(&msq->q_perm)) {
1196 		ipc_unlock_object(&msq->q_perm);
1233 		ipc_lock_object(&msq->q_perm);
1245 		ipc_unlock_object(&msq->q_perm);
1249 	ipc_unlock_object(&msq->q_perm);
1346 	struct msg_queue *msq = container_of(ipcp, struct msg_queue, q_perm);
1350 		   msq->q_perm.key,
1351 		   msq->q_perm.id,
1352 		   msq->q_perm.mode,
1357 		   from_kuid_munged(user_ns, msq->q_perm.uid),
1358 		   from_kgid_munged(user_ns, msq->q_perm.gid),
1359 		   from_kuid_munged(user_ns, msq->q_perm.cuid),
1360 		   from_kgid_munged(user_ns, msq->q_perm.cgid),