linux-kernel - [PATCH 08/10] security: fix documentation for the msg_queue

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Date:   Thu,  7 Feb 2019 15:44:56 +0300
From:   Denis Efremov <efremov@...ras.ru>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     Denis Efremov <efremov@...ras.ru>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Eric Paris <eparis@...isplace.org>,
        Kees Cook <keescook@...omium.org>,
        John Johansen <john.johansen@...onical.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Paul Moore <paul@...l-moore.com>,
        Kentaro Takeda <takedakn@...data.co.jp>,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 08/10] security: 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" (d8c6e8543294). 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: Denis Efremov <efremov@...ras.ru>
---
 include/linux/lsm_hooks.h | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 307714b8b072..f61f39c73208 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -1093,41 +1093,41 @@
  *
  * @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.
+ *	@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
+ *	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.
@@ -1615,13 +1615,13 @@ 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);
 
-- 
2.17.2