38 #include "zfs.h"
68 static zfs_dsl_dir_t *dsl_dir_alloc(zfs_opt_t *zfs, const char *name);
69 static zfs_dsl_dataset_t *dsl_dataset_alloc(zfs_opt_t *zfs, zfs_dsl_dir_t *dir);
96  * to follow ZFS' inheritance rules.
99 dsl_dir_get_mountpoint(zfs_opt_t *zfs, zfs_dsl_dir_t *dir)  in dsl_dir_get_mountpoint()  argument
136 	assert(strstr(mountpoint, zfs->rootpath) == mountpoint);  in dsl_dir_get_mountpoint()
155 dsl_dir_set_prop(zfs_opt_t *zfs, zfs_dsl_dir_t *dir, const char *key,  in dsl_dir_set_prop()  argument
170 			if (strcmp(val, zfs->rootpath) != 0 &&  in dsl_dir_set_prop()
171 			    strcmp(zfs->rootpath, "/") != 0 &&  in dsl_dir_set_prop()
172 			    (strstr(val, zfs->rootpath) != val ||  in dsl_dir_set_prop()
173 			     val[strlen(zfs->rootpath)] != '/')) {  in dsl_dir_set_prop()
175 				    "the root path `%s'", val, zfs->rootpath);  in dsl_dir_set_prop()
202 dsl_metadir_alloc(zfs_opt_t *zfs, const char *name)  in dsl_metadir_alloc()  argument
207 	easprintf(&path, "%s/%s", zfs->poolname, name);  in dsl_metadir_alloc()
208 	dir = dsl_dir_alloc(zfs, path);  in dsl_metadir_alloc()
214 dsl_origindir_init(zfs_opt_t *zfs)  in dsl_origindir_init()  argument
219 	zfs->origindsldir = dsl_metadir_alloc(zfs, "$ORIGIN");  in dsl_origindir_init()
220 	zfs->originds = dsl_dataset_alloc(zfs, zfs->origindsldir);  in dsl_origindir_init()
221 	zfs->snapds = dsl_dataset_alloc(zfs, zfs->origindsldir);  in dsl_origindir_init()
223 	clones = objset_dnode_alloc(zfs->mos, DMU_OT_DSL_CLONES, &clonesid);  in dsl_origindir_init()
224 	zfs->cloneszap = zap_alloc(zfs->mos, clones);  in dsl_origindir_init()
225 	zfs->origindsldir->phys->dd_clones = clonesid;  in dsl_origindir_init()
229 dsl_init(zfs_opt_t *zfs)  in dsl_init()  argument
237 	zfs->rootdsldir = dsl_dir_alloc(zfs, NULL);  in dsl_init()
239 	nvlist_add_uint64(zfs->rootdsldir->propsnv, "compression",  in dsl_init()
242 	zfs->rootds = dsl_dataset_alloc(zfs, zfs->rootdsldir);  in dsl_init()
243 	zfs->rootdsldir->headds = zfs->rootds;  in dsl_init()
245 	zfs->mosdsldir = dsl_metadir_alloc(zfs, "$MOS");  in dsl_init()
246 	zfs->freedsldir = dsl_metadir_alloc(zfs, "$FREE");  in dsl_init()
247 	dsl_origindir_init(zfs);  in dsl_init()
253 	STAILQ_FOREACH(d, &zfs->datasetdescs, next) {  in dsl_init()
259 		if (strcmp(dsname, zfs->poolname) == 0) {  in dsl_init()
264 			dir = zfs->rootdsldir;  in dsl_init()
269 			if (strstr(dsname, zfs->poolname) != dsname ||  in dsl_init()
271 			    (size_t)(next - dsname) != strlen(zfs->poolname)) {  in dsl_init()
273 				    dsname, zfs->poolname);  in dsl_init()
275 			dir = dsl_dir_alloc(zfs, dsname);  in dsl_init()
276 			dir->headds = dsl_dataset_alloc(zfs, dir);  in dsl_init()
286 			dsl_dir_set_prop(zfs, dir, key, val);  in dsl_init()
294 	if (nvpair_find(zfs->rootdsldir->propsnv, "mountpoint") == NULL) {  in dsl_init()
295 		nvlist_add_string(zfs->rootdsldir->propsnv, "mountpoint",  in dsl_init()
296 		    zfs->rootpath);  in dsl_init()
313 dsl_dir_foreach_post(zfs_opt_t *zfs, zfs_dsl_dir_t *dsldir,  in dsl_dir_foreach_post()  argument
319 		dsl_dir_foreach_post(zfs, cdsldir, cb, arg);  in dsl_dir_foreach_post()
321 	cb(zfs, dsldir, arg);  in dsl_dir_foreach_post()
328 dsl_dir_foreach(zfs_opt_t *zfs, zfs_dsl_dir_t *dsldir,  in dsl_dir_foreach()  argument
331 	dsl_dir_foreach_post(zfs, dsldir, cb, arg);  in dsl_dir_foreach()
341  * Create a DSL directory, which is effectively an entry in the ZFS namespace.
351 dsl_dir_alloc(zfs_opt_t *zfs, const char *name)  in dsl_dir_alloc()  argument
361 	dnode = objset_dnode_bonus_alloc(zfs->mos, DMU_OT_DSL_DIR,  in dsl_dir_alloc()
365 	dnode = objset_dnode_alloc(zfs->mos, DMU_OT_DSL_PROPS, &propsid);  in dsl_dir_alloc()
366 	dir->propszap = zap_alloc(zfs->mos, dnode);  in dsl_dir_alloc()
368 	dnode = objset_dnode_alloc(zfs->mos, DMU_OT_DSL_DIR_CHILD_MAP,  in dsl_dir_alloc()
370 	dir->childzap = zap_alloc(zfs->mos, dnode);  in dsl_dir_alloc()
382 		dir->name = estrdup(zfs->poolname);  in dsl_dir_alloc()
383 		dir->fullname = estrdup(zfs->poolname);  in dsl_dir_alloc()
387 		assert(zfs->rootdsldir == NULL);  in dsl_dir_alloc()
388 		zfs->rootdsldir = dir;  in dsl_dir_alloc()
398 	STAILQ_INSERT_HEAD(&l, zfs->rootdsldir, next);  in dsl_dir_alloc()
438 dsl_dir_root_finalize(zfs_opt_t *zfs, uint64_t bytes)  in dsl_dir_root_finalize()  argument
440 	dsl_dir_size_add(zfs->mosdsldir, bytes);  in dsl_dir_root_finalize()
441 	zfs->mosdsldir->phys->dd_used_breakdown[DD_USED_HEAD] += bytes;  in dsl_dir_root_finalize()
443 	dsl_dir_size_add(zfs->rootdsldir, bytes);  in dsl_dir_root_finalize()
444 	zfs->rootdsldir->phys->dd_used_breakdown[DD_USED_CHILD] += bytes;  in dsl_dir_root_finalize()
491 dsl_dir_finalize(zfs_opt_t *zfs, zfs_dsl_dir_t *dir, void *arg __unused)  in dsl_dir_finalize()  argument
500 	zap_write(zfs, dir->propszap);  in dsl_dir_finalize()
501 	zap_write(zfs, dir->childzap);  in dsl_dir_finalize()
510 	snapnames = objset_dnode_alloc(zfs->mos, DMU_OT_DSL_DS_SNAP_MAP,  in dsl_dir_finalize()
512 	zap_write(zfs, zap_alloc(zfs->mos, snapnames));  in dsl_dir_finalize()
515 	dir->phys->dd_clone_parent_obj = zfs->snapds->dsid;  in dsl_dir_finalize()
516 	headds->phys->ds_prev_snap_obj = zfs->snapds->dsid;  in dsl_dir_finalize()
520 	zfs->snapds->phys->ds_num_children++;  in dsl_dir_finalize()
521 	zap_add_uint64_self(zfs->cloneszap, headds->dsid);  in dsl_dir_finalize()
537 		if (dir == zfs->rootdsldir && cdir == zfs->mosdsldir)  in dsl_dir_finalize()
549 dsl_write(zfs_opt_t *zfs)  in dsl_write()  argument
560 	dsl_dir_foreach_post(zfs, zfs->rootdsldir, dsl_dir_finalize, NULL);  in dsl_write()
562 	snapnames = objset_dnode_alloc(zfs->mos, DMU_OT_DSL_DS_SNAP_MAP,  in dsl_write()
564 	snapnameszap = zap_alloc(zfs->mos, snapnames);  in dsl_write()
565 	zap_add_uint64(snapnameszap, "$ORIGIN", zfs->snapds->dsid);  in dsl_write()
566 	zap_write(zfs, snapnameszap);  in dsl_write()
568 	zfs->origindsldir->phys->dd_head_dataset_obj = zfs->originds->dsid;  in dsl_write()
569 	zfs->originds->phys->ds_prev_snap_obj = zfs->snapds->dsid;  in dsl_write()
570 	zfs->originds->phys->ds_snapnames_zapobj = snapmapid;  in dsl_write()
572 	zfs->snapds->phys->ds_next_snap_obj = zfs->originds->dsid;  in dsl_write()
573 	assert(zfs->snapds->phys->ds_num_children > 0);  in dsl_write()
574 	zfs->snapds->phys->ds_num_children++;  in dsl_write()
576 	zap_write(zfs, zfs->cloneszap);  in dsl_write()
582 dsl_dir_dataset_write(zfs_opt_t *zfs, zfs_objset_t *os, zfs_dsl_dir_t *dir)  in dsl_dir_dataset_write()  argument
585 	objset_write(zfs, os);  in dsl_dir_dataset_write()
601 dsl_dataset_alloc(zfs_opt_t *zfs, zfs_dsl_dir_t *dir)  in dsl_dataset_alloc()  argument
609 	dnode = objset_dnode_bonus_alloc(zfs->mos, DMU_OT_DSL_DATASET,  in dsl_dataset_alloc()
613 	dnode = objset_dnode_bonus_alloc(zfs->mos, DMU_OT_DEADLIST,  in dsl_dataset_alloc()
615 	zap_write(zfs, zap_alloc(zfs->mos, dnode));  in dsl_dataset_alloc()
620 	if (ds != zfs->snapds)  in dsl_dataset_alloc()