[lttng-dev] [PATCH lttng-tools] Fix:LTTNG_ERR_NEED_ROOT_SESSIOND error message

[Mathieu Desnoyers]

Fix pushed into master et stable-2.2

commit 30d5429919f43ec6ec35fe1353f74ae50e60b9d7
Author: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>
Date:   Fri Aug 16 16:48:08 2013 -0400

    Fix: imprecise error message about root sessiond/tracing group
    
    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers at efficios.com>

* Thibault, Daniel (Daniel.Thibault at drdc-rddc.gc.ca) wrote:
> -----Message d'origine-----
> De : Mathieu Desnoyers [mailto:mathieu.desnoyers at efficios.com] 
> Envoyé : 8 août 2013 11:22
> 
> * Thibault, Daniel (Daniel.Thibault at drdc-rddc.gc.ca) wrote:
> >    Unless there's been a change in the code, that is just not true.  You can trace the kernel just fine without 'tracing' group membership, as long as you have sudo privileges (and can thus call 'sudo -H lttng').  The root daemon is necessary either way: the text should just read "Tracing the kernel requires a root lttng-sessiond daemon".
> 
> The actual right way to word it would be:
> 
> Tracing the kernel requires a root lttng-sessiond daemon, as well as \"tracing\" group membership or root user ID for the lttng client.
> 
> Makes sense ?
> 
> Mathieu
> -----Fin du message d'origine-----
> 
>    Yeah, that's a fairly good way of saying you need a root lttng-sessiond daemon and some means of giving it instructions.  Since it is theoretically possible for a third-party application to send instructions directly to the root lttng-sessiond daemon (using the API) without using the lttng client, maybe that could be phrased "... or root user ID for lttng clients."  (Or am I mistaken in that belief?)
> 
> Daniel U. Thibault
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com