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    SubjectRe: [PATCH] CPU time clock support in clock_* syscalls
    Roland McGrath <roland@redhat.com> wrote:
    >
    > +int posix_cpu_clock_settime(clockid_t which_clock,
    > + const struct timespec __user *tp)
    > +{
    > + /*
    > + * You can never reset a CPU clock, but we check for other errors
    > + * in the call before failing with EPERM.
    > + */
    > + int error = check_clock(which_clock);
    > + if (error == 0) {
    > + struct timespec new_tp;
    > + error = -EPERM;
    > + if (copy_from_user(&new_tp, tp, sizeof *tp))
    > + error = -EFAULT;
    > + }
    > + return error;
    > +}

    This will always return an error.
    -
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