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  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:   Fri, 31 Aug 2018 11:08:09 -0400
From:   Willem de Bruijn <>
To:     Arnd Bergmann <>
Cc:     Network Development <>,
        David Miller <>,,
        y2038 Mailman List <>,
        Eric Dumazet <>,
        Willem de Bruijn <>,
        LKML <>,,,,,,,
Subject: Re: [PATCH net-next 1/3] net: rework SIOCGSTAMP ioctl handling

> > > Looking at it again, it seems that sock_gettstamp() should
> > > actually deal with this gracefully: it will return a -EINVAL
> > > error condition if the timestamp remains at the
> > > SK_DEFAULT_STAMP initial value, which is probably
> > > just as appropriate (or better) as the current -ENOTTY
> > > default, and if we are actually recording timestamps, we
> > > might just as well report them.
> >
> > Yes, that's a nice solution. There is always some risk in changing
> > error codes. But ioctl callers should be able to support newly
> > implemented functionality. Even if partially implemented and
> > returning ENOENT instead of ENOIOCTLCMD.
> Ok, so do you think we should stay with the current version
> for now, and change the two points later, or should I rework
> it to integrate the locking and removing the callback?
> I suppose the series actually gets nicer without the
> callback, since I can simply add the generic timestamping
> implementation first, and then remove the dead ioctl
> handlers.

Agreed. I would add the locks in a separate patch, if only on the
off-chance that lockdep discovers something and it will be easier
to bisect and revise independently. I can also follow up with that
patch outside this set, of course.

Powered by blists - more mailing lists