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    SubjectRFC [patch 34/34] PID Virtualization pidspace parent : signal behavior
    make sure a process parent of a pidspace discards signals sent
    from processes in that pidspace.

    Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
    ---
    signal.c | 4 ++++
    1 files changed, 4 insertions(+)

    Index: linux-2.6.15/kernel/signal.c
    ===================================================================
    --- linux-2.6.15.orig/kernel/signal.c 2006-01-17 08:37:09.000000000 -0500
    +++ linux-2.6.15/kernel/signal.c 2006-01-17 08:37:10.000000000 -0500
    @@ -642,6 +642,10 @@
    if (!valid_signal(sig))
    return error;
    error = -EPERM;
    +
    + if (task_vpid_ctx(t, current) == 1)
    + return error;
    +
    if ((info == SEND_SIG_NOINFO || (!is_si_special(info) && SI_FROMUSER(info)))
    && ((sig != SIGCONT) ||
    (current->signal->session != t->signal->session))
    --

    -
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