diff options
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c index eef1d21..cf99d68 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c @@ -1195,6 +1195,48 @@ zfsctl_snapshot_lookup(ap) return (error); } +static int +zfsctl_snapshot_vptocnp(struct vop_vptocnp_args *ap) +{ + zfsvfs_t *zfsvfs = ap->a_vp->v_vfsp->vfs_data; + vnode_t *dvp, *vp; + zfsctl_snapdir_t *sdp; + zfs_snapentry_t *sep; + int error; + + ASSERT(zfsvfs->z_ctldir != NULL); + error = zfsctl_root_lookup(zfsvfs->z_ctldir, "snapshot", &dvp, + NULL, 0, NULL, kcred, NULL, NULL, NULL); + if (error != 0) + return (error); + sdp = dvp->v_data; + + mutex_enter(&sdp->sd_lock); + sep = avl_first(&sdp->sd_snaps); + while (sep != NULL) { + vp = sep->se_root; + if (vp == ap->a_vp) + break; + sep = AVL_NEXT(&sdp->sd_snaps, sep); + } + if (sep == NULL) { + mutex_exit(&sdp->sd_lock); + error = ENOENT; + } else { + size_t len; + + len = strlen(sep->se_name); + *ap->a_buflen -= len; + bcopy(sep->se_name, ap->a_buf + *ap->a_buflen, len); + mutex_exit(&sdp->sd_lock); + vhold(dvp); + *ap->a_vpp = dvp; + } + VN_RELE(dvp); + + return (error); +} + /* * These VP's should never see the light of day. They should always * be covered. @@ -1206,6 +1248,7 @@ static struct vop_vector zfsctl_ops_snapshot = { .vop_reclaim = zfsctl_common_reclaim, .vop_getattr = zfsctl_snapshot_getattr, .vop_fid = zfsctl_snapshot_fid, + .vop_vptocnp = zfsctl_snapshot_vptocnp, }; int |
