Execute without sudo

[Baptiste-Garcin]

Hi,

Thanks for this awsome library.

I would like to know if there is a way to run binary without sudo-ing ?

[hzeller]

No, as the hardware needs to be initialized, which only works as root. However, by default the library will switch back the user to a safe default after the initialization, so the root-exposure is short.

If you can't run with sudo, you might try setuid root the binary.

[JokerCatz]

I tried use C lang create a unix socket server and use Golang send package to C , it only C part need root , and it worked : )

[JokerCatz]

I upload my C lang server and Golang client here : )

https://gist.github.com/JokerCatz/b39143861480ef174069bc5c718b142c
https://gist.github.com/JokerCatz/9790290776b71f7cff41f7bd060cd83b

[boilerbots]

There is a solution, I just implemented it.

First open /dev/gpiomem instead of /dev/mem, now you can run without root privileges.

Second thing that requires root is changing the priority level of the scheduler. For this you can simply do sudo setcap 'cap_sys_nice=eip' $@ in the makefile after the final linking.

[hzeller]

On Sat, 8 Jun 2019 at 17:39, boilerbots ***@***.***> wrote: There is a solution, I just implemented it. First open /dev/gpiomem instead of /dev/mem, now you can run without root privileges.

Does it work also with the other parts needed to do hardware pulse output ?

Second thing that requires root is changing the priority level of the

scheduler. For this you can simply do sudo setcap 'cap_sys_nice=eip' $@ in the makefile after the final linking.

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[boilerbots]

On Sat, 8 Jun 2019 at 17:39, boilerbots @.***> wrote: There is a solution, I just implemented it. First open /dev/gpiomem instead of /dev/mem, now you can run without root privileges.
Does it work also with the other parts needed to do hardware pulse output ?
Second thing that requires root is changing the priority level of the
scheduler. For this you can simply do sudo setcap 'cap_sys_nice=eip' $@ in the makefile after the final linking.
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Good question, I am running with --led-no-hardware-pulse because I am trying to preserve the audio. I suspect it won't but I haven't looked into that.