netdev - Re: [Patch] sctp: remove deprecated SCTP_GET_*

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 22 Oct 2009 23:44:39 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Vlad Yasevich <vladislav.yasevich@...com>
Cc:	Amerigo Wang <amwang@...hat.com>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [Patch] sctp: remove deprecated SCTP_GET_*_OLD stuffs

On Thu, Oct 22, 2009 at 04:53:30PM -0400, Vlad Yasevich wrote:
> > diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
> > index be2334a..0991f1b 100644
> > --- a/include/net/sctp/user.h
> > +++ b/include/net/sctp/user.h
> > @@ -131,14 +131,6 @@ enum sctp_optname {
> >  #define SCTP_SOCKOPT_BINDX_REM	SCTP_SOCKOPT_BINDX_REM
> >  	SCTP_SOCKOPT_PEELOFF, 	/* peel off association. */
> >  #define SCTP_SOCKOPT_PEELOFF	SCTP_SOCKOPT_PEELOFF
> > -	SCTP_GET_PEER_ADDRS_NUM_OLD, 	/* Get number of peer addresss. */
> > -#define SCTP_GET_PEER_ADDRS_NUM_OLD	SCTP_GET_PEER_ADDRS_NUM_OLD
> > -	SCTP_GET_PEER_ADDRS_OLD, 	/* Get all peer addresss. */
> > -#define SCTP_GET_PEER_ADDRS_OLD	SCTP_GET_PEER_ADDRS_OLD
> > -	SCTP_GET_LOCAL_ADDRS_NUM_OLD, 	/* Get number of local addresss. */
> > -#define SCTP_GET_LOCAL_ADDRS_NUM_OLD	SCTP_GET_LOCAL_ADDRS_NUM_OLD
> > -	SCTP_GET_LOCAL_ADDRS_OLD, 	/* Get all local addresss. */
> > -#define SCTP_GET_LOCAL_ADDRS_OLD	SCTP_GET_LOCAL_ADDRS_OLD
> >  	SCTP_SOCKOPT_CONNECTX_OLD, /* CONNECTX old requests. */
> 
> After running the regression suite against this patch I find that we can't
> remove the enum values.  Removing the enums changes the value for the remainder
> of the definitions and breaks binary compatibility for applications that use
> those trailing options.
> 
> You should be ok with removing the #defines and actual code that uses them,
> but not the enums.  You can even rename the enums, but we must preserve
> numeric ordering.

If we really depend on the actual value of an enum as in this case,
then e should assign them direct to better document this.

	Sam
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html