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Re: ✘Input device permissions


From: Gary E. Miller
Subject: Re: ✘Input device permissions
Date: Mon, 13 Apr 2020 19:09:04 -0700

Yo Hal!

On Mon, 13 Apr 2020 19:01:38 -0700
Hal Murray <address@hidden> wrote:

> address@hidden said:
> > "improper" is when gpsd can not re-ope the device after dropping
> > root. If it ever had root.   
> 
> I'd be happy with a warning for that case.
> 
> Should it drop-root before opening devices?

Then with only a warning, that would fail.

This comment is in gpsd.c:

    /*
     * We open devices specified on the command line *before* dropping
     * privileges in case one of them is a serial device with PPS support
     * and we need to set the line discipline, which requires root.
     */

Dunno what that means.

> What should permissions on shared memory be?

Beats me.  I always went with the long standing NTP defaults.

> Is this a good reminder to fix that stuff so readers are read only?

What read-only readers do you refer to?

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  Tel:+1 541 382 8588

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    "If you can't measure it, you can't improve it." - Lord Kelvin

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