diff options
Diffstat (limited to 'sys/dev/vnd.c')
| -rw-r--r-- | sys/dev/vnd.c | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/sys/dev/vnd.c b/sys/dev/vnd.c index 9c30e60a1b5..ea25556c0bb 100644 --- a/sys/dev/vnd.c +++ b/sys/dev/vnd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vnd.c,v 1.147 2011/07/12 22:51:21 deraadt Exp $ */ +/* $OpenBSD: vnd.c,v 1.148 2011/07/18 02:49:20 matthew Exp $ */ /* $NetBSD: vnd.c,v 1.26 1996/03/30 23:06:11 christos Exp $ */ /* @@ -256,8 +256,10 @@ vndclose(dev_t dev, int flags, int mode, struct proc *p) disk_closepart(&sc->sc_dk, part, mode); +#if 0 if (sc->sc_dk.dk_openmask == 0) sc->sc_flags &= ~VNF_HAVELABEL; +#endif disk_unlock(&sc->sc_dk); return (0); @@ -270,6 +272,7 @@ vndstrategy(struct buf *bp) struct vnd_softc *sc; struct partition *p; off_t off; + long origbcount; int s; DNPRINTF(VDB_FOLLOW, "vndstrategy(%p): unit %d\n", bp, unit); @@ -285,8 +288,31 @@ vndstrategy(struct buf *bp) goto bad; } - if (bounds_check_with_label(bp, sc->sc_dk.dk_label) == -1) + /* + * Many of the distrib scripts assume they can issue arbitrary + * sized requests to raw vnd devices irrespective of the + * emulated disk geometry. + * + * To continue supporting this, round the block count up to a + * multiple of d_secsize for bounds_check_with_label(), and + * then restore afterwards. + * + * We only do this for non-encrypted vnd, because encryption + * requires operating on blocks at a time. + */ + origbcount = bp->b_bcount; + if (sc->sc_keyctx == NULL) { + u_int32_t secsize = sc->sc_dk.dk_label->d_secsize; + bp->b_bcount = ((origbcount + secsize - 1) & ~(secsize - 1)); + } + + if (bounds_check_with_label(bp, sc->sc_dk.dk_label) == -1) { + bp->b_resid = bp->b_bcount = origbcount; goto done; + } + + if (origbcount < bp->b_bcount) + bp->b_bcount = origbcount; p = &sc->sc_dk.dk_label->d_partitions[DISKPART(bp->b_dev)]; off = DL_GETPOFFSET(p) * sc->sc_dk.dk_label->d_secsize + @@ -577,7 +603,7 @@ vndioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) return (error); error = setdisklabel(sc->sc_dk.dk_label, - (struct disklabel *)addr, sc->sc_dk.dk_openmask); + (struct disklabel *)addr, /* sc->sc_dk.dk_openmask */ 0); if (error == 0) { if (cmd == DIOCWDINFO) error = writedisklabel(DISKLABELDEV(dev), |