diff options
| -rw-r--r-- | sys/geom/concat/g_concat.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sys/geom/concat/g_concat.c b/sys/geom/concat/g_concat.c index 1f52375..545cb8f 100644 --- a/sys/geom/concat/g_concat.c +++ b/sys/geom/concat/g_concat.c @@ -212,6 +212,39 @@ g_concat_access(struct g_provider *pp, int dr, int dw, int de) } static void +g_concat_kernel_dump(struct bio *bp) +{ + struct g_concat_softc *sc; + struct g_concat_disk *disk; + struct bio *cbp; + struct g_kerneldump *gkd; + u_int i; + + sc = bp->bio_to->geom->softc; + gkd = (struct g_kerneldump *)bp->bio_data; + for (i = 0; i < sc->sc_ndisks; i++) { + if (sc->sc_disks[i].d_start <= gkd->offset && + sc->sc_disks[i].d_end > gkd->offset) + break; + } + if (i == sc->sc_ndisks) + g_io_deliver(bp, EOPNOTSUPP); + disk = &sc->sc_disks[i]; + gkd->offset -= disk->d_start; + if (gkd->length > disk->d_end - disk->d_start - gkd->offset) + gkd->length = disk->d_end - disk->d_start - gkd->offset; + cbp = g_clone_bio(bp); + if (cbp == NULL) { + g_io_deliver(bp, ENOMEM); + return; + } + cbp->bio_done = g_std_done; + g_io_request(cbp, disk->d_consumer); + G_CONCAT_DEBUG(1, "Kernel dump will go to %s.", + disk->d_consumer->provider->name); +} + +static void g_concat_flush(struct g_concat_softc *sc, struct bio *bp) { struct bio_queue_head queue; @@ -280,7 +313,12 @@ g_concat_start(struct bio *bp) g_concat_flush(sc, bp); return; case BIO_GETATTR: + if (strcmp("GEOM::kerneldump", bp->bio_attribute) == 0) { + g_concat_kernel_dump(bp); + return; + } /* To which provider it should be delivered? */ + /* FALLTHROUGH */ default: g_io_deliver(bp, EOPNOTSUPP); return; |
