int
vdev_disk_physio(vdev_t *vd, caddr_t data,
size_t size, uint64_t offset, int flags, boolean_t isdump)
{
vdev_disk_t *dvd = vd->vdev_tsd;
/*
* If the vdev is closed, it's likely in the REMOVED or FAULTED state.
* Nothing to be done here but return failure.
*/
if (dvd == NULL || (dvd->vd_ldi_offline && dvd->vd_lh == NULL))
return (EIO);
ASSERT(vd->vdev_ops == &vdev_disk_ops);
/* XXX Apple - no equivalent crash dump mechanism on OS X */
#ifdef illumos
/*
* If in the context of an active crash dump, use the ldi_dump(9F)
* call instead of ldi_strategy(9F) as usual.
*/
if (isdump) {
ASSERT3P(dvd, !=, NULL);
return (ldi_dump(dvd->vd_lh, data, lbtodb(offset),
lbtodb(size)));
}
#endif
return (vdev_disk_ldi_physio(dvd->vd_lh, data, size, offset, flags));
}
int
vdev_disk_physio(vdev_t *vd, caddr_t data,
size_t size, uint64_t offset, int flags, boolean_t isdump)
{
int rc = EIO;
vdev_disk_t *dvd;
rw_enter(&vd->vdev_tsd_lock, RW_READER);
dvd = vd->vdev_tsd;
/*
* If the vdev is closed, it's likely in the REMOVED or FAULTED state.
* Nothing to be done here but return failure.
*/
if (dvd == NULL || dvd->vd_lh == NULL)
goto out;
ASSERT(vd->vdev_ops == &vdev_disk_ops);
/*
* If in the context of an active crash dump, use the ldi_dump(9F)
* call instead of ldi_strategy(9F) as usual.
*/
if (isdump) {
ASSERT3P(dvd, !=, NULL);
rc = ldi_dump(dvd->vd_lh, data, lbtodb(offset), lbtodb(size));
goto out;
}
rc = vdev_disk_ldi_physio(dvd->vd_lh, data, size, offset, flags);
out:
rw_exit(&vd->vdev_tsd_lock);
return (rc);
}
