38 lines
2.6 KiB
Plaintext
38 lines
2.6 KiB
Plaintext
################################################################################
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## ##
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## Copyright (c) International Business Machines Corp., 2007 ##
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## ##
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## This program is free software; you can redistribute it and#or modify ##
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## it under the terms of the GNU General Public License as published by ##
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## the Free Software Foundation; either version 2 of the License, or ##
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## (at your option) any later version. ##
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## ##
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## This program is distributed in the hope that it will be useful, but ##
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## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ##
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## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ##
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## for more details. ##
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## ##
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## You should have received a copy of the GNU General Public License ##
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## along with this program; if not, write to the Free Software ##
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## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ##
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## ##
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################################################################################
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PIDNS testcases Overview:
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A pid namespace is a view of particular set of tasks on the system. For processes, a process may have pid 1234 in one namespace, but have pid 1 in another.This allows processes to use process ids which are in use in other pid namespaces, without having to worry about what pids exist in other namespaces.
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"A process has a pid in every ancestor pid namespaces up to the initial pid namespace. If process B is in a child namespace relative to process A, then process A will see process B by the pid which is valid in process A's pid namespace."
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"Another way of specifying process visibility, then is that process A will see all tasks which have a valid pid in process A's pid namespace."
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Testcases:
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1> Check the process id of container after cloning as 1.
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2> After creation of container the PID Namespace of the container should have the parent group id as 1 and also session id as 1.
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3> Create container: pass the parent namespacei id: mount /proc directory: check parent namespace id inside container: if it is exiting then PASS otherwise FAIL.
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Check for PIDNS enablement: from 2.6.24 kernel version.
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