linux-kernel - Re: linux-next: manual merge of the tty tree with the tree

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:	Tue, 8 Sep 2009 09:06:58 -0700
From:	Greg KH <greg@...ah.com>
To:	Joe Peterson <joe@...rush.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: manual merge of the tty tree with the  tree

On Mon, Sep 07, 2009 at 03:55:44PM -0600, Joe Peterson wrote:
> Linus Torvalds wrote:
> > Hmm. I think that the "honor opost flag for echoes" patch is actually 
> > wrong.
> > 
> > We check O_OPOST() in the _caller_ for the regular write case, and that
> > test actually looks like this:
> > 
> > 	if (O_OPOST(tty) && !(test_bit(TTY_HW_COOK_OUT, &tty->flags))) {
> > 
> > so at a minimum, if we add it to process_output() we should likely add it 
> > in the same format. But if we need that test, I'd rather do it in the 
> > caller anyway, like we already do for regular writes.
> 
> Yes, very true.  The old opost() function also contained the O_OPOST
> check (i.e. causing a double check for normal writes), and you are right
> that we should not reintroduce it (and it makes sense for the caller to
> check it).
> 
> There is only the one case in which the O_OPOST check is needed before
> calling do_output_char() (in process_echoes()), so we could just inline
> the test there.  Take a look at my new attached patch (untested also).
> I'll test and resubmit, assuming there are no objections.

Thanks for doing this, I'll drop the patch from my tree and wait for you
to test and resubmit this.

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/