C++ (Cpp) xsm_alloc_security_evtchn 예제들

예제 #1

파일: event_channel.c 프로젝트: Kylinux/XenKylinx

static int get_free_port(struct domain *d)
{
    struct evtchn *chn;
    int            port;
    int            i, j;

    if ( d->is_dying )
        return -EINVAL;

    for ( port = 0; port_is_valid(d, port); port++ )
        if ( evtchn_from_port(d, port)->state == ECS_FREE )
            return port;

    if ( port == MAX_EVTCHNS(d) )
        return -ENOSPC;

    chn = xzalloc_array(struct evtchn, EVTCHNS_PER_BUCKET);
    if ( unlikely(chn == NULL) )
        return -ENOMEM;
    bucket_from_port(d, port) = chn;

    for ( i = 0; i < EVTCHNS_PER_BUCKET; i++ )
    {
        if ( xsm_alloc_security_evtchn(&chn[i]) )
        {
            for ( j = 0; j < i; j++ )
                xsm_free_security_evtchn(&chn[j]);
            xfree(chn);
            return -ENOMEM;
        }
    }

    return port;
}

예제 #2

파일: event_channel.c 프로젝트: HPSI/xen-v4v

static struct evtchn *alloc_evtchn_bucket(struct domain *d, unsigned int port)
{
    struct evtchn *chn;
    unsigned int i;

    chn = xzalloc_array(struct evtchn, EVTCHNS_PER_BUCKET);
    if ( !chn )
        return NULL;

    for ( i = 0; i < EVTCHNS_PER_BUCKET; i++ )
    {
        if ( xsm_alloc_security_evtchn(&chn[i]) )
        {
            while ( i-- )
                xsm_free_security_evtchn(&chn[i]);
            xfree(chn);
            return NULL;
        }
        chn[i].port = port + i;
    }
    return chn;
}