Drew, FYI, that is just a character device based on /dev/mem/ which could very easily be done for the Beaglebones as well. In fact, porting their code would be potentially as simple as redefining pin constants in code, plus adding an additional 60+ for beaglebones ;)
On Fri, Feb 5, 2016 at 4:47 PM, William Hermans <[email protected]> wrote: > *This is why Unix/Linux has groups. Do the following:* >> > > Using groups is not necessarily the safest way to go about things John. > But I do agree it is a possibility. The only real contention that I have > with using groups. Is . . . my sudo example can be used on a very specific > command, only allowing that very specific command, where all others, no > matter how similar, if not exactly the same will not run. My example if not > really a good illustration of this but imagine this: > > echo '1' > /sys/class/gpio/gpio67/value /* allowed */ > echo '0' > /sys/class/gpio/gpio67/value /* not allowed */ > > Obviously the above is very contrived, but there can be a need for something > similar. > > > > Also, when using groups, you do not really want to change groups, but add > groups. e.g. you *do not* want to change group root to wheel ( or > whatever group you want ) for a specific item. Since the system likely > needs root to have access to given items for various reasons. You also want > to be as specific as possible when creating / using groups. As using > groups, wrongly, is a perfect way to add a huge gaping security hole into a > system. > > On Fri, Feb 5, 2016 at 4:34 PM, John Syne <[email protected]> wrote: > >> This is why Unix/Linux has groups. Do the following: >> >> ls -la /dev >> >> You will see groups such as i2c, dialout, tty, etc. If you want to access >> these devices from a regular user account, add your user to those groups. >> If you need to use a device that has root:root, then change the group and >> add your user account to that group. >> >> >> Regards, >> John >> >> >> >> >> On Feb 5, 2016, at 2:13 PM, Drew Fustini <[email protected]> wrote: >> >> I noticed that the Raspberry Pi kernel adopted /dev/gpiomem to provide a >> way for non-root users to access GPIO: >> >> Add /dev/gpiomem device for rootless user GPIO access: >> https://github.com/raspberrypi/linux/pull/1112 >> >> Is there anything comparable for BeagleBone? Anyone have ideas/plans? >> >> I started thinking about this after seeing this post on the Adafruit >> forum: >> >> Trying to use Adafruit_BBIO library and run as non-root user >> >> https://forums.adafruit.com/viewtopic.php?f=49&t=89338&p=450036#p450036 >> >> >> thanks, >> drew >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
