Messages in this thread | | | Date | Thu, 29 May 2014 09:59:54 +0400 | From | Vasily Kulikov <> | Subject | Re: [PATCH v2] /proc/pid/status: show all sets of pid according to ns |
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On Wed, May 28, 2014 at 23:27 +0400, Pavel Emelyanov wrote: > On 05/28/2014 10:28 PM, Vasily Kulikov wrote: > > On Wed, May 28, 2014 at 16:44 +0400, Pavel Emelyanov wrote: > > It will be simplier > > to parse the file -- if 'ns_ids' file contains some ID then this ID for > > every ns can be obtained regardless of the specific ID name (SID, PID, > > PGID, etc.). > > True, but given a task PID how to determine which pid namespaces it lives in > to get the idea of how PIDs map to each other? Maybe we need some explicit > API for converting (ID, NS1, NS2) into (ID)?
AFAIU the idea of the patch is to add a new debugging information which can be trivially obtained via 'cat /proc/...':
] We need a direct method of getting the pid inside containers. ] If some issues occurred inside container guest, host user ] could not know which process is in trouble just by guest pid: ] the users of container guest only knew the pid inside containers. ] This will bring obstacle for trouble shooting.
A new syscall might complicate trouble shooting by admin.
-- Vasily Kulikov http://www.openwall.com - bringing security into open computing environments
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