int sa_replace_all_by_template(sa_handle_t *hdl, sa_bulk_attr_t *attr_desc, int attr_count, dmu_tx_t *tx) { int error; mutex_enter(&hdl->sa_lock); error = sa_replace_all_by_template_locked(hdl, attr_desc, attr_count, tx); mutex_exit(&hdl->sa_lock); return (error); }
void zfs_sa_upgrade(sa_handle_t *hdl, dmu_tx_t *tx) { dmu_buf_t *db = sa_get_db(hdl); znode_t *zp = sa_get_userdata(hdl); zfsvfs_t *zfsvfs = zp->z_zfsvfs; sa_bulk_attr_t bulk[20]; int count = 0; sa_bulk_attr_t sa_attrs[20] = { { 0 } }; zfs_acl_locator_cb_t locate = { 0 }; uint64_t uid, gid, mode, rdev, xattr, parent; uint64_t crtime[2], mtime[2], ctime[2]; zfs_acl_phys_t znode_acl; char scanstamp[AV_SCANSTAMP_SZ]; boolean_t drop_lock = B_FALSE; /* * No upgrade if ACL isn't cached * since we won't know which locks are held * and ready the ACL would require special "locked" * interfaces that would be messy */ if (zp->z_acl_cached == NULL || vnode_islnk(ZTOV(zp))) return; /* * If the z_lock is held and we aren't the owner * the just return since we don't want to deadlock * trying to update the status of z_is_sa. This * file can then be upgraded at a later time. * * Otherwise, we know we are doing the * sa_update() that caused us to enter this function. */ if (mutex_owner(&zp->z_lock) != curthread) { if (mutex_tryenter(&zp->z_lock) == 0) return; else drop_lock = B_TRUE; } /* First do a bulk query of the attributes that aren't cached */ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL, &crtime, 16); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_XATTR(zfsvfs), NULL, &xattr, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_RDEV(zfsvfs), NULL, &rdev, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, &uid, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), NULL, &gid, 8); SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ZNODE_ACL(zfsvfs), NULL, &znode_acl, 88); if (sa_bulk_lookup_locked(hdl, bulk, count) != 0) goto done; /* * While the order here doesn't matter its best to try and organize * it is such a way to pick up an already existing layout number */ count = 0; SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_MODE(zfsvfs), NULL, &mode, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_SIZE(zfsvfs), NULL, &zp->z_size, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_GEN(zfsvfs), NULL, &zp->z_gen, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_UID(zfsvfs), NULL, &uid, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_GID(zfsvfs), NULL, &gid, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_PARENT(zfsvfs), NULL, &parent, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_FLAGS(zfsvfs), NULL, &zp->z_pflags, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_ATIME(zfsvfs), NULL, zp->z_atime, 16); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_CRTIME(zfsvfs), NULL, &crtime, 16); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_LINKS(zfsvfs), NULL, &zp->z_links, 8); if (vnode_isblk(zp->z_vnode) || vnode_islnk(zp->z_vnode)) SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_RDEV(zfsvfs), NULL, &rdev, 8); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_DACL_COUNT(zfsvfs), NULL, &zp->z_acl_cached->z_acl_count, 8); if (zp->z_acl_cached->z_version < ZFS_ACL_VERSION_FUID) zfs_acl_xform(zp, zp->z_acl_cached, CRED()); locate.cb_aclp = zp->z_acl_cached; SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_DACL_ACES(zfsvfs), zfs_acl_data_locator, &locate, zp->z_acl_cached->z_acl_bytes); if (xattr) SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_XATTR(zfsvfs), NULL, &xattr, 8); /* if scanstamp then add scanstamp */ if (zp->z_pflags & ZFS_BONUS_SCANSTAMP) { bcopy((caddr_t)db->db_data + ZFS_OLD_ZNODE_PHYS_SIZE, scanstamp, AV_SCANSTAMP_SZ); SA_ADD_BULK_ATTR(sa_attrs, count, SA_ZPL_SCANSTAMP(zfsvfs), NULL, scanstamp, AV_SCANSTAMP_SZ); zp->z_pflags &= ~ZFS_BONUS_SCANSTAMP; } VERIFY(dmu_set_bonustype(db, DMU_OT_SA, tx) == 0); VERIFY(sa_replace_all_by_template_locked(hdl, sa_attrs, count, tx) == 0); if (znode_acl.z_acl_extern_obj) VERIFY(0 == dmu_object_free(zfsvfs->z_os, znode_acl.z_acl_extern_obj, tx)); zp->z_is_sa = B_TRUE; done: if (drop_lock) mutex_exit(&zp->z_lock); }