linux-kernel - Re: [PATCH V2] audit: log 32-bit socketcalls

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Date:   Mon, 16 Jan 2017 23:03:50 -0500
From:   Richard Guy Briggs <rgb@...hat.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-audit@...hat.com, aixer77@...il.com, eparis@...hat.com,
        pmoore@...hat.com, sgrubb@...hat.com
Subject: Re: [PATCH V2] audit: log 32-bit socketcalls

On 2017-01-16 13:27, David Miller wrote:
> From: Richard Guy Briggs <rgb@...hat.com>
> Date: Fri, 13 Jan 2017 04:51:48 -0500
> 
> > diff --git a/include/linux/audit.h b/include/linux/audit.h
> > index 9d4443f..43d8003 100644
> > --- a/include/linux/audit.h
> > +++ b/include/linux/audit.h
> > @@ -387,6 +387,18 @@ static inline int audit_socketcall(int nargs, unsigned long *args)
> >  		return __audit_socketcall(nargs, args);
> >  	return 0;
> >  }
> > +static inline int audit_socketcall_compat(int nargs, u32 *args)
> > +{
> 
> Please put an empty line between function definitions.

Ok, should I reformat the rest of the file while I'm at it?

> > +	if (unlikely(!audit_dummy_context())) {
> > +		int i;
> > +		unsigned long a[AUDITSC_ARGS];
> 
> Please order local variable declarations from longest to shortest line.

Ok.  Is this a recent addition to a style guide or in checkpatch.pl?

> > +
> > +		for (i=0; i<nargs; i++)
> 
> Please put a space around operators such as "=" and "<".

Oops, my bad...

> > +			a[i] = (unsigned long)args[i];
> > +		return __audit_socketcall(nargs, a);
> > +	}
> > +	return 0;
> > +}
> >  static inline int audit_sockaddr(int len, void *addr)
> 
> Again, empty line between function definitions please.
> 
> > @@ -781,14 +782,24 @@ COMPAT_SYSCALL_DEFINE5(recvmmsg, int, fd, struct compat_mmsghdr __user *, mmsg,
> >  
> >  COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
> >  {
> > +	unsigned int len;
> >  	int ret;
> > -	u32 a[6];
> > +	u32 a[AUDITSC_ARGS];
> >  	u32 a0, a1;
> 
> Longest to shortest line for local variable declarations please.

- RGB

--
Richard Guy Briggs <rgb@...hat.com>
Kernel Security Engineering, Base Operating Systems, Red Hat
Remote, Ottawa, Canada
Voice: +1.647.777.2635, Internal: (81) 32635