freebsd/zfs/zfs_dir.c

114 	znode_t		*zp;
190 		error = zfs_zget(zfsvfs, zoid, &zp);
193 		ASSERT(!zp->z_unlinked);
194 		*zpp = zp;
204 	znode_t *zp;
219 	error = zfs_zget(zfsvfs, parent, &zp);
221 		*zpp = zp;
229 	znode_t *zp = NULL;
242 		error = zfs_dd_lookup(dzp, &zp);
244 			*zpp = zp;
246 		error = zfs_dirent_lookup(dzp, name, &zp, ZEXISTS);
249 			*zpp = zp;
270 zfs_unlinked_add(znode_t *zp, dmu_tx_t *tx)
272 	zfsvfs_t *zfsvfs = zp->z_zfsvfs;
274 	ASSERT(zp->z_unlinked);
275 	ASSERT3U(zp->z_links, ==, 0);
277 	VERIFY0(zap_add_int(zfsvfs->z_os, zfsvfs->z_unlinkedobj, zp->z_id, tx));
292 	znode_t		*zp;
316 		 * so we pull them back into core and set zp->z_unlinked.
318 		error = zfs_zget(zfsvfs, zap.za_first_integer, &zp);
329 		vn_lock(ZTOV(zp), LK_EXCLUSIVE | LK_RETRY);
335 		if (zp->z_links != 0) {
337 			dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
341 				vput(ZTOV(zp));
344 			zp->z_links = 0;
345 			VERIFY0(sa_update(zp->z_sa_hdl, SA_ZPL_LINKS(zfsvfs),
346 			    &zp->z_links, sizeof (zp->z_links), tx));
350 		zp->z_unlinked = B_TRUE;
351 		vput(ZTOV(zp));
424 zfs_rmnode(znode_t *zp)
426 	zfsvfs_t	*zfsvfs = zp->z_zfsvfs;
429 	uint64_t	z_id = zp->z_id;
435 	ASSERT3U(zp->z_links, ==, 0);
437 		ASSERT_VOP_ELOCKED(ZTOV(zp), __func__);
442 	if (ZTOV(zp) != NULL && ZTOV(zp)->v_type == VDIR &&
443 	    (zp->z_pflags & ZFS_XATTR)) {
444 		if (zfs_purgedir(zp) != 0) {
450 			zfs_znode_dmu_fini(zp);
451 			zfs_znode_free(zp);
464 		error = dmu_free_long_range(os, zp->z_id, 0, DMU_OBJECT_END);
471 			zfs_znode_dmu_fini(zp);
472 			zfs_znode_free(zp);
482 	error = sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs),
487 	acl_obj = zfs_external_acl(zp);
493 	dmu_tx_hold_free(tx, zp->z_id, 0, DMU_OBJECT_END);
500 	zfs_sa_upgrade_txholds(tx, zp);
510 		zfs_znode_dmu_fini(zp);
511 		zfs_znode_free(zp);
535 	    zap_remove_int(os, zfsvfs->z_unlinkedobj, zp->z_id, tx));
545 	zfs_znode_delete(zp, tx);
546 	zfs_znode_free(zp);
562 zfs_dirent(znode_t *zp, uint64_t mode)
564 	uint64_t de = zp->z_id;
566 	if (zp->z_zfsvfs->z_version >= ZPL_VERSION_DIRENT_TYPE)
572  * Link zp into dzp.  Can only fail if zp has been unlinked.
575 zfs_link_create(znode_t *dzp, const char *name, znode_t *zp, dmu_tx_t *tx,
578 	zfsvfs_t *zfsvfs = zp->z_zfsvfs;
579 	vnode_t *vp = ZTOV(zp);
589 		ASSERT_VOP_ELOCKED(ZTOV(zp), __func__);
596 		if (zp->z_unlinked) {	/* no new links to unlinked zp */
600 		if (zp->z_links >= ZFS_LINK_MAX - zp_is_dir) {
603 		zp->z_links++;
605 		    &zp->z_links, sizeof (zp->z_links));
608 		ASSERT(!zp->z_unlinked);
610 	value = zfs_dirent(zp, zp->z_mode);
611 	error = zap_add(zp->z_zfsvfs->z_os, dzp->z_id, name,
622 			zp->z_links--;
629 	    &zp->z_pflags, sizeof (zp->z_pflags));
634 		zfs_tstamp_update_setup(zp, STATE_CHANGED, mtime,
637 	error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx);
682 zfs_dropname(znode_t *dzp, const char *name, znode_t *zp, dmu_tx_t *tx,
687 	if (zp->z_zfsvfs->z_norm) {
690 		if (zp->z_zfsvfs->z_case == ZFS_CASE_MIXED) {
694 		error = zap_remove_norm(zp->z_zfsvfs->z_os, dzp->z_id,
697 		error = zap_remove(zp->z_zfsvfs->z_os, dzp->z_id, name, tx);
704  * Unlink zp from dzp, and mark zp for deletion if this was the last link.
705  * Can fail if zp is a mount point (EBUSY) or a non-empty directory (EEXIST).
711 zfs_link_destroy(znode_t *dzp, const char *name, znode_t *zp, dmu_tx_t *tx,
715 	vnode_t *vp = ZTOV(zp);
725 		ASSERT_VOP_ELOCKED(ZTOV(zp), __func__);
729 		if (zp_is_dir && !zfs_dirempty(zp))
737 		error = zfs_dropname(dzp, name, zp, tx, flag);
742 		if (zp->z_links <= zp_is_dir) {
744 			    "should be at least %u", zp->z_vnode,
745 			    (int)zp->z_links,
747 			zp->z_links = zp_is_dir + 1;
749 		if (--zp->z_links == zp_is_dir) {
750 			zp->z_unlinked = B_TRUE;
751 			zp->z_links = 0;
757 			    NULL, &zp->z_pflags, sizeof (zp->z_pflags));
758 			zfs_tstamp_update_setup(zp, STATE_CHANGED, mtime,
762 		    NULL, &zp->z_links, sizeof (zp->z_links));
763 		error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx);
767 		ASSERT(!zp->z_unlinked);
768 		error = zfs_dropname(dzp, name, zp, tx, flag);
774 	dzp->z_links -= zp_is_dir;	/* ".." link from zp */
792 		zfs_unlinked_add(zp, tx);
807 zfs_make_xattrdir(znode_t *zp, vattr_t *vap, znode_t **xvpp, cred_t *cr)
809 	zfsvfs_t *zfsvfs = zp->z_zfsvfs;
819 	if ((error = zfs_acl_ids_create(zp, IS_XATTR, vap, cr, NULL,
832 	dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE);
844 	zfs_mknode(zp, vap, tx, cr, IS_XATTR, &xzp, &acl_ids);
851 	ASSERT3U(parent, ==, zp->z_id);
853 	VERIFY0(sa_update(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs), &xzp->z_id,
856 	zfs_log_create(zfsvfs->z_log, tx, TX_MKXATTR, zp, xzp, "", NULL,
870  * Return a znode for the extended attribute directory for zp.
873  *	IN:	zp	- znode to obtain attribute directory from
883 zfs_get_xattrdir(znode_t *zp, znode_t **xzpp, cred_t *cr, int flags)
885 	zfsvfs_t	*zfsvfs = zp->z_zfsvfs;
890 	error = zfs_dirent_lookup(zp, "", &xzp, ZXATTR);
920 	zfs_fuid_map_ids(zp, cr, &va.va_uid, &va.va_gid);
922 	error = zfs_make_xattrdir(zp, &va, xzpp, cr);
948 zfs_sticky_remove_access(znode_t *zdp, znode_t *zp, cred_t *cr)
962 	fowner = zfs_fuid_map_id(zfsvfs, zp->z_uid, cr, ZFS_OWNER);
965 	    (ZTOV(zp)->v_type == VREG &&
966 	    zfs_zaccess(zp, ACE_WRITE_DATA, 0, B_FALSE, cr, NULL) == 0))
969 		return (secpolicy_vnode_remove(ZTOV(zp), cr));