linux-kernel - Re: [patch 10/26] mount options: fix devpts

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Message-Id: <E1JIKn4-0001Jb-Vo@pomaz-ex.szeredi.hu>
Date:	Fri, 25 Jan 2008 10:24:02 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	hpa@...or.com
CC:	miklos@...redi.hu, akpm@...ux-foundation.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [patch 10/26] mount options: fix devpts

> > Also add minor fix: when parsing the "mode" option, mask with
> > S_IALLUGO instead of ~S_IFMT, which could leave unsed bits in the
> > mask.
> 
> umode_t is 16 bits, so it doesn't.  The change is still good, of course.

We still use 16 bit types?  Strange ;)

> 
> > +	if (config.mode != DEVPTS_DEFAULT_MODE)
> > +		seq_printf(seq, ",mode=%03o", config.mode);
> 
> I would rather this be unconditional, than that it be conditional on 
> something other than the user having specified it in the first place.

Yeah, it's a matter of taste.  I'll update the patch.

Actually, a lot of filesystems share the options 'uid=X', 'gid=X',
'mode=X' (or 'umask=X').  This could be handled by the VFS, saving
some code, and making things more consistent.  One day maybe...

Thanks,
Miklos
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