LE_NOT_PERMITTED connecting to service

Legato Application Framework
1

Hello

I am trying to use the posCtrl service in a legacy application, however running le_posCtrl_TryConnectService() returns LE_NOT_PERMITTED.

The program is being run on a FX30S as user root. I checked the SMACK permissions on the binary with getfattr -dm- which yields security-SMACK64="admin". I’m not sure how to check what other permissions apply, if any. Could anybody help me diagnose this?

Update: I am using “legacy” above in the sense used in the Legato docs here. That means I am using interfaces generated with ifgen, my program has a main function, and I am using my own build system.

The Legato version I am using is 19.01.0-323-gf37d71d6. The firmware level of the device, as reported by fwupdate, is:

Firmware Version: SWI9X06Y_02.22.12.00 eaf79c jenkins 2019/04/24 18:48:27
Bootloader Version: SWI9X06Y_02.22.12.00 eaf79c jenkins 2019/04/24 18:48:27
Linux Version: 3.18.44 #2 PREEMPT Wed Apr 24 20:48:03 UTC 2019

Thanks,
Dan

2

Added some extra info in the OP.

3

Hi, we have been in contact with Sierra support and updated to the right firmware version:

Legato Ver: 18.06.1_03c5394b4c271c054ae58a494f160e37
Yocto Ver:  SWI9X06Y_02.18.05.00 2019-01-29_11:20:10
OS Ver: Linux version 3.18.44 (jenkins@CAKEL-EV-ALBLD2) (gcc version 6.2.0 (GCC) ) #2 PREEMPT Tue Jan 29 11:21:07 PST 2019
LK Ver: 1.3.0_838aec2863
RootFS Ver: SWI9X06Y_02.18.05.00 2019-01-29_11:20:10
UserFS Ver: unknown
MCU Ver: 002.009

Unfortunately after the update the issue persists. Any ideas?

4

Possibly try to execute the tool using app runProc. That way you can execute in the context of an application, which appropriate parameters/bindings, while when executing as root it is easy to mess things up (especially in term of bindings and/or of files creates).

5

Problem solved by packaging our binary with an application definition file and creating the correct API bindings. The problem was that these APIs were unbound.