/proc/speakup

[Kerry Hoath]

I seem to recall that alsa sets the permitions on /proc/asound with
a command-line option we might be able to steal the code to do it.
Alternatively we could have a /proc/speakup/access file root only accessable
and if you want to open up the rest of the files echo 1 >/proc/speakup/access from one of the startup
scripts like /proc/sys/net/ipv4/ip_forward does.
That way we keep both camps happy. If you want the files open you say so
in the boot scripts, if not the default can be paranoia.
Comments anyone?
On Thu, Feb 15, 2001 at 02:09:35PM -0700, Holmes, Steve wrote:
> I could certainly see why.  It was just an idea.  If I were to cast a vote
> on this, I would go for root-only access to the /proc/speakup files.  I
> think most of the time, speakup would be running on a single blind person's
> machine and he/she is probably the only one using it so that person would
> most likely have root privileges.
> 
> -----Original Message-----
> From: Kerry Hoath [mailto:kerry at gotss.eu.org]
> Sent: Thursday, February 15, 2001 9:05 AM
> To: speakup at braille.uwo.ca
> Subject: Re: /proc/speakup
> 
> 
> Setuid shellscripts are disabled by default because of the problems they
> introduce. You _can_ enable them somehow but it is highly discouraged.
> On Thu, Feb 15, 2001 at 07:15:48AM -0700, Holmes, Steve wrote:
> > Well, here's an idea; How about making the /proc/speak system root
> writeable
> > only and provide a user script that could be used by the user and have it
> > setuid to update the system.  As I think about this, I suppose that really
> > wouldn't be any different than opening up the /proc files.
> > 
> > -----Original Message-----
> > From: Geoff Shang [mailto:gshang at uq.net.au]
> > Sent: Thursday, February 15, 2001 6:01 AM
> > To: speakup at braille.uwo.ca
> > Subject: Re: /proc/speakup 
> > 
> > 
> > On Thu, 15 Feb 2001, Steve Holmes wrote:
> > 
> > > I thought I heard a while back that only root could update these files.
> > > Is that so?
> > 
> > That is not so.  The files in /proc/speakup apart from the exceptions
> > discussed earlier today can be updated by any user on the system.  There
> > are some files in /proc/speakup/<synth> (where <synth> is the currently
> > used synth) which contain data that, if modified, might cause serious
> > damage to the system.  These files therefore can only be modified by root.
> > 
> > Since the proc file system is only a vertual file system, commands like
> > chmod and chown do not actually work, even though they return without
> > errors.  The permissions have to be set as part of the speakup code.  Jim
> > and I discussed alternative access methods for these files, but the
> choices
> > seem to be access for all or access for no-one except root, without making
> > it a configurable option in either the kernel command line or perhaps the
> > kernel config.  Personally, I'd be quite happy to see all this be root
> > access only, but I can understand why people might want to be able to
> > change synth settings in user-space.
> > 
> > Geoff.
> > 
> > 
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup at braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup at braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > 
> 
> -- 
> --
> Kerry Hoath: kerry at gotss.eu.org
> Alternates: kerry at emusys.com.au kerry at gotss.spice.net.au or
> khoath at lis.net.au
> ICQ UIN: 8226547
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup at braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 
> _______________________________________________
> Speakup mailing list
> Speakup at braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

-- 
--
Kerry Hoath: kerry at gotss.eu.org
Alternates: kerry at emusys.com.au kerry at gotss.spice.net.au or khoath at lis.net.au
ICQ UIN: 8226547