System: Ubuntu 15.10 with Bluez 5.38
PyBluez with BlueZ 4 didn't have any problem with this. But since migrating to BlueZ 5 and making necessary adjustments to run the bluetooth code, I cannot run the same programs without sudo
. Using sudo
everything works as expected. However, if I run without sudo, the following error is thrown:
Traceback (most recent call last):
File "/home/sidmeister/mymodule/py34/lib/python3.4/site-packages/PyBluez-0.22-py3.4-linux-x86_64.egg/bluetooth/bluez.py", line 240, in advertise_service
protocols)
_bluetooth.error: (13, 'Permission denied')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.4/runpy.py", line 170, in _run_module_as_main
"__main__", mod_spec)
File "/usr/lib/python3.4/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/home/sidmeister/mymodule/mymodule/blue/receiver.py", line xxx, in some_function
profiles=[bluetooth.SERIAL_PORT_PROFILE]
File "/home/sidmeister/mymodule/py34/lib/python3.4/site-packages/PyBluez-0.22-py3.4-linux-x86_64.egg/bluetooth/bluez.py", line 242, in advertise_service
raise BluetoothError (str (e))
bluetooth.btcommon.BluetoothError: (13, 'Permission denied')
I understand that this stems from increased security in newer bluetooth library which is why it needs sudo
. But, is there any special group (like video
in case of accessing camera) that has inherent access to bluetooth so that I can make my user a member of that group and it will be able to access bluetooth without sudo
? FYI, my user is already a member of dialout
group and it doesn't help.
Please let me know if there is any other way I can tackle this problem.
You can use setcap
to set permissions on the python executable.
To install setcap
on Ubuntu:
sudo apt-get install libcap2-bin
To figure out where your python executable is:
which python
This will often be a link. You'll need to figure out the actual path of the binary. On my machine, /usr/bin/python
is a link to /usr/bin/python2.7
To assign the appropriate permissions to the executable:
sudo setcap 'cap_net_raw,cap_net_admin+eip' <path-to-python-binary-here>
Related question: https://unix.stackexchange.com/a/182559
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