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msg/security: Pass kern_ipc_perm not msg_queue into the msg_queue security hooks

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All of the implementations of security hooks that take msg_queue only
access q_perm the struct kern_ipc_perm member.  This means the
dependencies of the msg_queue security hooks can be simplified by
passing the kern_ipc_perm member of msg_queue.

Making this change will allow struct msg_queue to become private to
ipc/msg.c.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2018-03-22 21:22:26 -05:00
parent 7191adff2a
commit d8c6e85432
6 changed files with 62 additions and 65 deletions
Download patch file Download diff file Expand all files Collapse all files

12
security/security.c
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@ -1163,33 +1163,33 @@ void security_msg_msg_free(struct msg_msg *msg)
call_void_hook(msg_msg_free_security, msg);
}
int security_msg_queue_alloc(struct msg_queue *msq)
int security_msg_queue_alloc(struct kern_ipc_perm *msq)
{
return call_int_hook(msg_queue_alloc_security, 0, msq);
}
void security_msg_queue_free(struct msg_queue *msq)
void security_msg_queue_free(struct kern_ipc_perm *msq)
{
call_void_hook(msg_queue_free_security, msq);
}
int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
{
return call_int_hook(msg_queue_associate, 0, msq, msqflg);
}
int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
{
return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
}
int security_msg_queue_msgsnd(struct msg_queue *msq,
int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
struct msg_msg *msg, int msqflg)
{
return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
}
int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
struct task_struct *target, long type, int mode)
{
return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);