xfs/libxfs/xfs_metadir.c

155  * directory tree operation.  The caller retains its reference to @upd->ip
160 	struct xfs_metadir_update	*upd,
163 	trace_xfs_metadir_teardown(upd, error);
165 	if (upd->ppargs) {
166 		xfs_parent_finish(upd->dp->i_mount, upd->ppargs);
167 		upd->ppargs = NULL;
170 	if (upd->ip) {
171 		if (upd->ip_locked)
172 			xfs_iunlock(upd->ip, XFS_ILOCK_EXCL);
173 		upd->ip_locked = false;
176 	if (upd->dp_locked)
177 		xfs_iunlock(upd->dp, XFS_ILOCK_EXCL);
178 	upd->dp_locked = false;
187 	struct xfs_metadir_update	*upd)
189 	struct xfs_mount		*mp = upd->dp->i_mount;
192 	ASSERT(upd->dp != NULL);
193 	ASSERT(upd->ip == NULL);
195 	ASSERT(upd->metafile_type != XFS_METAFILE_UNKNOWN);
197 	error = xfs_parent_start(mp, &upd->ppargs);
209 			xfs_create_space_res(mp, MAXNAMELEN), 0, 0, &upd->tp);
217 	xfs_ilock(upd->dp, XFS_ILOCK_EXCL | XFS_ILOCK_PARENT);
218 	upd->dp_locked = true;
220 	trace_xfs_metadir_start_create(upd);
223 	xfs_metadir_teardown(upd, error);
229  * metadata directory tree at the given @upd->path.  The path up to the final
232  * The new metadata inode will be attached to the update structure @upd->ip,
241 	struct xfs_metadir_update	*upd,
245 		.pip			= upd->dp,
250 		.dp			= upd->dp,
252 		.ppargs			= upd->ppargs,
254 	struct xfs_mount		*mp = upd->dp->i_mount;
259 	xfs_assert_ilocked(upd->dp, XFS_ILOCK_EXCL);
262 	xfs_metadir_set_xname(&xname, upd->path, XFS_DIR3_FT_UNKNOWN);
263 	error = xfs_metadir_lookup(upd->tp, upd->dp, &xname, &ino);
279 	error = xfs_dialloc(&upd->tp, &args, &ino);
282 	error = xfs_icreate(upd->tp, ino, &args, &upd->ip);
285 	du.ip = upd->ip;
286 	xfs_metafile_set_iflag(upd->tp, upd->ip, upd->metafile_type);
287 	upd->ip_locked = true;
293 	xfs_trans_ijoin(upd->tp, upd->dp, 0);
302 	trace_xfs_metadir_try_create(upd);
304 	error = xfs_dir_create_child(upd->tp, resblks, &du);
310 	trace_xfs_metadir_create(upd);
322 	struct xfs_metadir_update	*upd)
324 	struct xfs_mount		*mp = upd->dp->i_mount;
329 	ASSERT(upd->dp != NULL);
330 	ASSERT(upd->ip != NULL);
333 	error = xfs_parent_start(mp, &upd->ppargs);
338 	error = xfs_trans_alloc_dir(upd->dp, &M_RES(mp)->tr_link, upd->ip,
339 			&resblks, &upd->tp, &nospace_error);
344 		xfs_trans_cancel(upd->tp);
345 		upd->tp = NULL;
346 		xfs_iunlock(upd->dp, XFS_ILOCK_EXCL);
347 		xfs_iunlock(upd->ip, XFS_ILOCK_EXCL);
352 	upd->dp_locked = true;
353 	upd->ip_locked = true;
355 	trace_xfs_metadir_start_link(upd);
358 	xfs_metadir_teardown(upd, error);
363  * Link the metadata directory given by @path to the inode @upd->ip.
369 	struct xfs_metadir_update	*upd)
373 		.dp			= upd->dp,
375 		.ip			= upd->ip,
376 		.ppargs			= upd->ppargs,
378 	struct xfs_mount		*mp = upd->dp->i_mount;
383 	xfs_assert_ilocked(upd->dp, XFS_ILOCK_EXCL);
384 	xfs_assert_ilocked(upd->ip, XFS_ILOCK_EXCL);
387 	xfs_metadir_set_xname(&xname, upd->path,
388 			xfs_mode_to_ftype(VFS_I(upd->ip)->i_mode));
389 	error = xfs_metadir_lookup(upd->tp, upd->dp, &xname, &ino);
401 	error = xfs_dir_add_child(upd->tp, resblks, &du);
405 	trace_xfs_metadir_link(upd);
414 	struct xfs_metadir_update	*upd)
418 	trace_xfs_metadir_commit(upd);
420 	error = xfs_trans_commit(upd->tp);
421 	upd->tp = NULL;
423 	xfs_metadir_teardown(upd, error);
430 	struct xfs_metadir_update	*upd,
433 	trace_xfs_metadir_cancel(upd);
435 	xfs_trans_cancel(upd->tp);
436 	upd->tp = NULL;
438 	xfs_metadir_teardown(upd, error);
448 	struct xfs_metadir_update	upd = {
459 	error = xfs_metadir_start_create(&upd);
464 	error = xfs_metadir_create(&upd, S_IFDIR);
468 	error = xfs_metadir_commit(&upd);
472 	xfs_finish_inode_setup(upd.ip);
473 	*ipp = upd.ip;
477 	xfs_metadir_cancel(&upd, error);
480 	if (upd.ip) {
481 		xfs_finish_inode_setup(upd.ip);
482 		xfs_irele(upd.ip);