diff options
Diffstat (limited to 'sys/fs/specfs/spec_vnops.c')
| -rw-r--r-- | sys/fs/specfs/spec_vnops.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c index cbe52f4..baf40c3 100644 --- a/sys/fs/specfs/spec_vnops.c +++ b/sys/fs/specfs/spec_vnops.c @@ -88,6 +88,7 @@ static struct vnodeopv_entry_desc spec_vnodeop_entries[] = { { &vop_open_desc, (vop_t *) spec_open }, { &vop_pathconf_desc, (vop_t *) vop_stdpathconf }, { &vop_poll_desc, (vop_t *) spec_poll }, + { &vop_getwritemount_desc, (vop_t *) vop_stdgetwritemount }, { &vop_print_desc, (vop_t *) spec_print }, { &vop_read_desc, (vop_t *) spec_read }, { &vop_readdir_desc, (vop_t *) vop_panic }, @@ -415,16 +416,29 @@ spec_strategy(ap) struct buf *bp; struct vnode *vp; struct mount *mp; + int error; bp = ap->a_bp; - if ((bp->b_iocmd == BIO_WRITE) && (LIST_FIRST(&bp->b_dep)) != NULL) - buf_start(bp); - + vp = ap->a_vp; + if ((bp->b_iocmd == BIO_WRITE)) { + if (vp->v_mount != NULL && + (vp->v_mount->mnt_kern_flag & MNTK_SUSPENDED) != 0) + panic("spec_strategy: bad I/O"); + if (LIST_FIRST(&bp->b_dep) != NULL) + buf_start(bp); + if ((vp->v_flag & VCOPYONWRITE) && + (error = VOP_COPYONWRITE(vp, bp)) != 0 && + error != EOPNOTSUPP) { + bp->b_io.bio_error = error; + bp->b_io.bio_flags |= BIO_ERROR; + biodone(&bp->b_io); + return (0); + } + } /* * Collect statistics on synchronous and asynchronous read * and write counts for disks that have associated filesystems. */ - vp = ap->a_vp; if (vn_isdisk(vp, NULL) && (mp = vp->v_specmountpoint) != NULL) { if (bp->b_iocmd == BIO_WRITE) { if (bp->b_lock.lk_lockholder == LK_KERNPROC) |
