static int
tmpfs_kqfilter (struct vop_kqfilter_args *ap)
{
struct vnode *vp = ap->a_vp;
struct knote *kn = ap->a_kn;
switch (kn->kn_filter) {
case EVFILT_READ:
kn->kn_fop = &tmpfsread_filtops;
break;
case EVFILT_WRITE:
kn->kn_fop = &tmpfswrite_filtops;
break;
case EVFILT_VNODE:
kn->kn_fop = &tmpfsvnode_filtops;
break;
default:
return (EOPNOTSUPP);
}
kn->kn_hook = (caddr_t)vp;
knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
return(0);
}
static int
snpkqfilter(struct dev_kqfilter_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct snoop *snp = dev->si_drv1;
struct knote *kn = ap->a_kn;
struct klist *klist;
lwkt_gettoken(&tty_token);
ap->a_result = 0;
switch (kn->kn_filter) {
case EVFILT_READ:
kn->kn_fop = &snpfiltops_rd;
kn->kn_hook = (caddr_t)snp;
break;
case EVFILT_WRITE:
kn->kn_fop = &snpfiltops_wr;
kn->kn_hook = (caddr_t)snp;
break;
default:
ap->a_result = EOPNOTSUPP;
lwkt_reltoken(&tty_token);
return (0);
}
klist = &snp->snp_kq.ki_note;
knote_insert(klist, kn);
lwkt_reltoken(&tty_token);
return (0);
}
/*
* Kevent handler. Writing is always possible, reading is only possible
* if BSR_BULK_IN_FULL is set. Will start the cmx_tick callout and
* set sc->polling.
*/
static int
cmx_kqfilter(struct dev_kqfilter_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct knote *kn = ap->a_kn;
struct cmx_softc *sc;
struct klist *klist;
ap->a_result = 0;
sc = devclass_get_softc(cmx_devclass, minor(dev));
switch (kn->kn_filter) {
case EVFILT_READ:
kn->kn_fop = &cmx_read_filterops;
kn->kn_hook = (caddr_t)sc;
break;
case EVFILT_WRITE:
kn->kn_fop = &cmx_write_filterops;
kn->kn_hook = (caddr_t)sc;
break;
default:
ap->a_result = EOPNOTSUPP;
return (0);
}
klist = &sc->kq.ki_note;
knote_insert(klist, kn);
return (0);
}
static int
ptckqfilter(struct dev_kqfilter_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct knote *kn = ap->a_kn;
struct tty *tp = dev->si_tty;
struct klist *klist;
lwkt_gettoken(&tty_token);
ap->a_result = 0;
switch (kn->kn_filter) {
case EVFILT_READ:
klist = &tp->t_rkq.ki_note;
kn->kn_fop = &ptcread_filtops;
break;
case EVFILT_WRITE:
klist = &tp->t_wkq.ki_note;
kn->kn_fop = &ptcwrite_filtops;
break;
default:
ap->a_result = EOPNOTSUPP;
lwkt_reltoken(&tty_token);
return (0);
}
kn->kn_hook = (caddr_t)dev;
knote_insert(klist, kn);
lwkt_reltoken(&tty_token);
return (0);
}
static int
sysvipc_dev_kqfilter(struct dev_kqfilter_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct knote *kn = ap->a_kn;
struct sysvipc_softc *sysv = dev->si_drv1;
struct klist *list;
if(sysv==NULL){
kprintf("error read\n");
return -1;
}
kprintf("kqfilter\n");
sysv = dev->si_drv1;
list = &sysv->sysvipc_rkq.ki_note;
ap->a_result =0;
switch(kn->kn_filter) {
case EVFILT_READ:
kprintf("event read\n");
kn->kn_fop = &sysvipc_read_filtops;
kn->kn_hook = (void *)sysv;
break;
default:
ap->a_result = EOPNOTSUPP;
return(0);
}
knote_insert(list, kn);
return(0);
}
PDEVSTATIC int
i4bkqfilter(struct dev_kqfilter_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct knote *kn = ap->a_kn;
struct klist *klist;
if (minor(dev))
return (1);
ap->a_result = 0;
switch (kn->kn_filter) {
case EVFILT_READ:
kn->kn_fop = &i4bkqfiltops_read;
break;
case EVFILT_WRITE:
kn->kn_fop = &i4bkqfiltops_write;
break;
default:
ap->a_result = EOPNOTSUPP;
return (0);
}
klist = &kq_rd_info.ki_note;
knote_insert(klist, kn);
return (0);
}
static int
logkqfilter(struct dev_kqfilter_args *ap)
{
struct knote *kn = ap->a_kn;
struct klist *klist = &logsoftc.sc_kqp.ki_note;
ap->a_result = 0;
switch (kn->kn_filter) {
case EVFILT_READ:
kn->kn_fop = &logread_filtops;
break;
default:
ap->a_result = EOPNOTSUPP;
return (0);
}
knote_insert(klist, kn);
return (0);
}
int
drm_kqfilter(struct dev_kqfilter_args *ap)
{
struct cdev *kdev = ap->a_head.a_dev;
struct drm_file *file_priv;
struct drm_device *dev;
struct knote *kn = ap->a_kn;
struct klist *klist;
int error;
error = devfs_get_cdevpriv(ap->a_fp, (void **)&file_priv);
if (error != 0) {
DRM_ERROR("can't find authenticator\n");
return (EINVAL);
}
dev = drm_get_device_from_kdev(kdev);
ap->a_result = 0;
switch (kn->kn_filter) {
case EVFILT_READ:
case EVFILT_WRITE:
kn->kn_fop = &drmfiltops;
kn->kn_hook = (caddr_t)file_priv;
break;
default:
ap->a_result = EOPNOTSUPP;
return (0);
}
lockmgr(&dev->event_lock, LK_EXCLUSIVE);
klist = &file_priv->dkq.ki_note;
knote_insert(klist, kn);
lockmgr(&dev->event_lock, LK_RELEASE);
return (0);
}
