| From | Marta Rybczynska <> | Date | Fri, 27 Mar 2020 09:42:55 +0100 | Subject | Re: [PATCH v2 03/12] task_isolation: userspace hard isolation from kernel |
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On Sun, Mar 8, 2020 at 4:48 AM Alex Belits <abelits@marvell.com> wrote: > +/* Enable task_isolation mode for TASK_ISOLATION kernels. */ > +#define PR_TASK_ISOLATION 48 > +# define PR_TASK_ISOLATION_ENABLE (1 << 0) > +# define PR_TASK_ISOLATION_SET_SIG(sig) (((sig) & 0x7f) << 8) > +# define PR_TASK_ISOLATION_GET_SIG(bits) (((bits) >> 8) & 0x7f) > + Thank you for resurrecting this code!
I have a question on the UAPI: the example code is using PR_TASK_ISOLATION_USERSIG and it seems to be removed from this version.
To enable isolation with SIGUSR1 the task should run: prctl(PR_SET_TASK_ISOLATION, PR_TASK_ISOLATION_ENABLE | PR_TASK_ISOLATION_SET_SIG(SIGUSR1), 0, 0, 0);
And to disable: prctl(PR_SET_TASK_ISOLATION, 0, 0, 0, 0);
Is this correct? Marta
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