Bug 1321424

Summary:	root:root ownership of USB device prevents access by non-root daemons
Product:	[Fedora] Fedora	Reporter:	Benji Wiebe <benjiwiebe>
Component:	rtl-sdr	Assignee:	Jaroslav Škarvada <jskarvad>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	23	CC:	jskarvad
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	rtl-sdr-0.5.3-6 rtl-sdr-0.5.3-6.fc24 rtl-sdr-0.5.3-6.fc23	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-04-04 17:26:00 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1317939

Description Benji Wiebe 2016-03-26 20:59:54 UTC

Description of problem: I am working on packaging dump1090, which uses an RTL-SDR. dump1090 does not need to be run as root, as long as it has permission to access the RTL-SDR usb device. However, the udev rules do not assign a group to the USB device, so either dump1090 must run as root, or dump1090 must provide another overriding udev entry, or rtl-sdr must provide a better udev entry. I'd prefer the problem be fixed in rtl-sdr.


Steps to Reproduce:
1. Plug in RTL-SDR
2. Look at ownership of the USB special device file corresponding to RTL-SDR

Actual results:
Ownership is root:root.


Expected results:
Ownership would be root:rtlsdr (or some other group created by rtl-sdr).

Comment 1 Jaroslav Škarvada 2016-03-29 08:22:31 UTC

Is it server or tool run by regular user? In the latter case it should work out of the box, because it uses uaccess.

Comment 2 Jaroslav Škarvada 2016-03-29 08:25:09 UTC

(In reply to Jaroslav Škarvada from comment #1)
> Is it server or tool run by regular user? In the latter case it should work
> out of the box, because it uses uaccess.

I.e.:
$ dump1090 --interactive

Should work out of the box.

But if you intend to provide systemd service file for it, then we need a group.

Comment 3 Jaroslav Škarvada 2016-03-29 08:31:01 UTC

Or your package with service can provide udev rule/policy for it, i.e.:

Allowing ENV{ID_SOFTWARE_RADIO} access for username your service is running as.

Comment 4 Jaroslav Škarvada 2016-03-29 09:48:39 UTC

Re-introduced rtlsdr group for usage with servers/services.

Comment 5 Fedora Update System 2016-03-29 10:18:55 UTC

rtl-sdr-0.5.3-6.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-961ba3853b

Comment 6 Fedora Update System 2016-03-29 10:19:40 UTC

rtl-sdr-0.5.3-6.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-d2a273c87d

Comment 7 Fedora Update System 2016-03-30 00:26:10 UTC

rtl-sdr-0.5.3-6.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-d2a273c87d

Comment 8 Fedora Update System 2016-03-30 00:28:02 UTC

rtl-sdr-0.5.3-6.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-961ba3853b

Comment 9 Benji Wiebe 2016-03-30 04:10:26 UTC

Yes, it is a daemon program that needs this. Adding an rtlsdr group should fix it, thanks! As soon as I can I'll test it and make sure it works.

Comment 10 Fedora Update System 2016-04-04 17:25:58 UTC

rtl-sdr-0.5.3-6.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 11 Fedora Update System 2016-04-07 15:52:20 UTC

rtl-sdr-0.5.3-6.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.