Commit ab012bc8 authored by Denis Efremov's avatar Denis Efremov Committed by James Morris
Browse files

LSM: fix documentation for the msg_queue_* hooks 



The msg_queue_* hooks were changed in the commit
"msg/security: Pass kern_ipc_perm not msg_queue into the msg_queue
security hooks" (d8c6e854). The type of the argument msq was changed
from msq_queue to kern_ipc_perm. This patch updates the documentation
for the hooks accordingly.

Signed-off-by: default avatarDenis Efremov <efremov@ispras.ru>
Acked-by: default avatarKees Cook <keescook@chromium.org>
Acked-by: default avatarCasey Schaufler <casey@schaufler-ca.com>
Signed-off-by: default avatarJames Morris <james.morris@microsoft.com>
parent 5fdd268f

include/linux/lsm_hooks.h

+19 −19
Original line number Diff line number Diff line
@@ -1111,41 +1111,41 @@ 
 *

 * @msg_queue_alloc_security:

 *	Allocate and attach a security structure to the

 *	msq->q_perm.security field. The security field is initialized to

 *	@perm->security field. The security field is initialized to

 *	NULL when the structure is first created.

 *	@msq contains the message queue structure to be modified.

 *	@perm contains the IPC permissions of the message queue.

 *	Return 0 if operation was successful and permission is granted.

 * @msg_queue_free_security:

 *	Deallocate security structure for this message queue.

 *	@msq contains the message queue structure to be modified.

 *	Deallocate security field @perm->security for the message queue.

 *	@perm contains the IPC permissions of the message queue.

 * @msg_queue_associate:

 *	Check permission when a message queue is requested through the

 *	msgget system call. This hook is only called when returning the

 *	message queue identifier for an existing message queue, not when a

 *	new message queue is created.

 *	@msq contains the message queue to act upon.

 *	@perm contains the IPC permissions of the message queue.

 *	@msqflg contains the operation control flags.

 *	Return 0 if permission is granted.

 * @msg_queue_msgctl:

 *	Check permission when a message control operation specified by @cmd

 *	is to be performed on the message queue @msq.

 *	The @msq may be NULL, e.g. for IPC_INFO or MSG_INFO.

 *	@msq contains the message queue to act upon.  May be NULL.

 *	is to be performed on the message queue with permissions @perm.

 *	The @perm may be NULL, e.g. for IPC_INFO or MSG_INFO.

 *	@perm contains the IPC permissions of the msg queue. May be NULL.

 *	@cmd contains the operation to be performed.

 *	Return 0 if permission is granted.

 * @msg_queue_msgsnd:

 *	Check permission before a message, @msg, is enqueued on the message

 *	queue, @msq.

 *	@msq contains the message queue to send message to.

 *	queue with permissions @perm.

 *	@perm contains the IPC permissions of the message queue.

 *	@msg contains the message to be enqueued.

 *	@msqflg contains operational flags.

 *	Return 0 if permission is granted.

 * @msg_queue_msgrcv:

 *	Check permission before a message, @msg, is removed from the message

 *	queue, @msq.  The @target task structure contains a pointer to the

 *	queue. The @target task structure contains a pointer to the

 *	process that will be receiving the message (not equal to the current

 *	process when inline receives are being performed).

 *	@msq contains the message queue to retrieve message from.

 *	@perm contains the IPC permissions of the message queue.

 *	@msg contains the message destination.

 *	@target contains the task structure for recipient process.

 *	@type contains the type of message requested.
@@ -1637,13 +1637,13 @@ union security_list_options { 
	int (*msg_msg_alloc_security)(struct msg_msg *msg);

	void (*msg_msg_free_security)(struct msg_msg *msg);



	int (*msg_queue_alloc_security)(struct kern_ipc_perm *msq);

	void (*msg_queue_free_security)(struct kern_ipc_perm *msq);

	int (*msg_queue_associate)(struct kern_ipc_perm *msq, int msqflg);

	int (*msg_queue_msgctl)(struct kern_ipc_perm *msq, int cmd);

	int (*msg_queue_msgsnd)(struct kern_ipc_perm *msq, struct msg_msg *msg,

	int (*msg_queue_alloc_security)(struct kern_ipc_perm *perm);

	void (*msg_queue_free_security)(struct kern_ipc_perm *perm);

	int (*msg_queue_associate)(struct kern_ipc_perm *perm, int msqflg);

	int (*msg_queue_msgctl)(struct kern_ipc_perm *perm, int cmd);

	int (*msg_queue_msgsnd)(struct kern_ipc_perm *perm, struct msg_msg *msg,

				int msqflg);

	int (*msg_queue_msgrcv)(struct kern_ipc_perm *msq, struct msg_msg *msg,

	int (*msg_queue_msgrcv)(struct kern_ipc_perm *perm, struct msg_msg *msg,

				struct task_struct *target, long type,

				int mode);

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