Messages in this thread | | | Date | Sun, 9 Nov 2008 18:41:31 -0600 | From | "Serge E. Hallyn" <> | Subject | Re: [TOMOYO #12 (2.6.28-rc2-mm1) 06/11] Common functions for TOMOYOLinux. |
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Quoting Tetsuo Handa (penguin-kernel@I-love.SAKURA.ne.jp): > Hello. > > Andrew Morton wrote: > > > +static bool is_select_one(struct tmy_io_buffer *head, const char *data) > > > +{ > > > + unsigned int pid; > > > + struct domain_info *domain = NULL; > > > + > > > + if (sscanf(data, "pid=%u", &pid) == 1) { > > > > PIDs are no longer system-wide unique, and here we appear to be > > implementing new userspace ABIs using PIDs. > > > I'm not familiar with virtualized environment. > > There are two PIDs, PID seen from inside virtualized environment and > PID seen from outside virtualized environment. To clarify, let me call > the former "PIDv" and the latter "PIDg". > > PIDv is not system-wide unique. But PIDg is system-wide unique, aren't they? > The PID received from outside virtualized environment is PIDg and they are > system-wide unique, am I right?
You are doing find_task_by_vpid(), so you are not looking up a task by global pid.
-serge
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