On 6/30/20 5:35 AM, Pablo Sebastián Greco wrote: > > On 29/6/20 16:49, R C wrote: >> Hello, >> >> ownership/permissions on gpio device are like tis: >> >> crw-------. 1 root root 254, 0 Jan 1 1970 gpiochip0 >> crw-------. 1 root root 254, 1 Jan 1 1970 gpiochip1 >> crw-------. 1 root root 254, 2 Jan 1 1970 gpiochip2 >> crw-------. 1 root root 246, 0 Jan 1 1970 gpiomem >> >> >> while other device like ttys, are owned by root and "group owned" by >> tty, similar for video, disk, dialout etc. >> >> wouldn't it be 'better' to have these gpio devices owned by root, >> "group owned" by a group other then root (gpio)? >> >> (or did 'we' inherit that from further up/down the development chain?) > Yeap, that's inherited, I'm guessing you could write some udev rule to > set the permissions you need (or even setfacl) I didn't even go that route, I just created a group, called gpio, added myself and the uid stuff is running under to it, changed the group permission on the devices to rw . That way a user that is in the gpio group can use the devices, it's easy and similar to how serial devices etc (by being a member of dialout) work Would be convenient if the gpio devices in /dev could be treated the same, permission wise, as modem/ACM0-n etc. >> >> >> Ron >> >> _______________________________________________ >> Arm-dev mailing list >> Arm-dev at centos.org >> https://lists.centos.org/mailman/listinfo/arm-dev > Pablo.