dev/dm/dm_dev.c

55 disable_dev(dm_dev_t *dmv)
58 	TAILQ_REMOVE(&dm_dev_list, dmv, next_devlist);
59 	mutex_enter(&dmv->dev_mtx);
61 	while (dmv->ref_cnt != 0)
62 		cv_wait(&dmv->dev_cv, &dmv->dev_mtx);
63 	mutex_exit(&dmv->dev_mtx);
74 	dm_dev_t *dmv;
80 		if ((dmv = dm_dev_lookup_minor(dm_dev_minor)) != NULL) {
81 			dm_dev_busy(dmv);
83 			return dmv;
86 		if ((dmv = dm_dev_lookup_name(dm_dev_name)) != NULL) {
87 			dm_dev_busy(dmv);
89 			return dmv;
92 		if ((dmv = dm_dev_lookup_uuid(dm_dev_uuid)) != NULL) {
93 			dm_dev_busy(dmv);
95 			return dmv;
108 	dm_dev_t *dmv;
110 	TAILQ_FOREACH(dmv, &dm_dev_list, next_devlist)
111 		if (dm_dev_minor == dmv->minor)
112 			return dmv;
123 	dm_dev_t *dmv;
132 	TAILQ_FOREACH(dmv, &dm_dev_list, next_devlist) {
133 		dlen = strlen(dmv->name);
138 		if (strncmp(dm_dev_name, dmv->name, slen) == 0)
139 			return dmv;
151 	dm_dev_t *dmv;
160 	TAILQ_FOREACH(dmv, &dm_dev_list, next_devlist) {
161 		if (strlen(dmv->uuid) != len)
164 		if (strncmp(dm_dev_uuid, dmv->uuid, strlen(dmv->uuid)) == 0)
165 			return dmv;
177 	dm_dev_t *dmv;
180 	dmv = NULL;
185 	if (((dmv = dm_dev_lookup_uuid(dev->uuid)) == NULL) &&
186 	    ((dmv = dm_dev_lookup_name(dev->name)) == NULL) &&
187 	    ((dmv = dm_dev_lookup_minor(dev->minor)) == NULL)) {
203 	dm_dev_t *dmv;
206 	TAILQ_FOREACH(dmv, &dm_dev_list, next_devlist) {
207 		if (dm_dev_minor == dmv->minor) {
227 	dm_dev_t *dmv;
230 	TAILQ_FOREACH(dmv, &dm_dev_list, next_devlist) {
231 		if (devt == dmv->devt) {
232 			disable_dev(dmv);
233 			return dmv;
248 	dm_dev_t *dmv;
252 		if ((dmv = dm_dev_lookup_minor(dm_dev_minor)) != NULL) {
253 			disable_dev(dmv);
254 			return dmv;
257 		if ((dmv = dm_dev_lookup_name(dm_dev_name)) != NULL) {
258 			disable_dev(dmv);
259 			return dmv;
262 		if ((dmv = dm_dev_lookup_name(dm_dev_uuid)) != NULL) {
263 			disable_dev(dmv);
264 			return dmv;
278 	dm_dev_t *dmv;
282 		dmv = TAILQ_FIRST(&dm_dev_list);
287 		mutex_enter(&dmv->dev_mtx);
289 		while (dmv->ref_cnt != 0)
290 			cv_wait(&dmv->dev_cv, &dmv->dev_mtx);
293 		dm_table_destroy(&dmv->table_head, DM_TABLE_ACTIVE);
296 		dm_table_destroy(&dmv->table_head, DM_TABLE_INACTIVE);
298 		dm_table_head_destroy(&dmv->table_head);
300 		mutex_exit(&dmv->dev_mtx);
301 		mutex_destroy(&dmv->dev_mtx);
302 		cv_destroy(&dmv->dev_cv);
304 		kmem_free(dmv, sizeof(dm_dev_t));
318 	dm_dev_t *dmv;
320 	dmv = kmem_zalloc(sizeof(dm_dev_t), KM_SLEEP);
321 	dmv->diskp = kmem_zalloc(sizeof(struct disk), KM_SLEEP);
322 	return dmv;
329 dm_dev_free(dm_dev_t *dmv)
332 	KASSERT(dmv != NULL);
334 	mutex_destroy(&dmv->dev_mtx);
335 	mutex_destroy(&dmv->diskp_mtx);
336 	cv_destroy(&dmv->dev_cv);
338 	if (dmv->diskp != NULL)
339 		kmem_free(dmv->diskp, sizeof(struct disk));
341 	kmem_free(dmv, sizeof(dm_dev_t));
347 dm_dev_busy(dm_dev_t *dmv)
350 	mutex_enter(&dmv->dev_mtx);
351 	dmv->ref_cnt++;
352 	mutex_exit(&dmv->dev_mtx);
356 dm_dev_unbusy(dm_dev_t *dmv)
359 	KASSERT(dmv->ref_cnt != 0);
361 	mutex_enter(&dmv->dev_mtx);
362 	if (--dmv->ref_cnt == 0)
363 		cv_broadcast(&dmv->dev_cv);
364 	mutex_exit(&dmv->dev_mtx);
373 	dm_dev_t *dmv;
381 	TAILQ_FOREACH(dmv, &dm_dev_list, next_devlist) {
384 		prop_dictionary_set_string(dev_dict, DM_DEV_NAME, dmv->name);
385 		prop_dictionary_set_uint32(dev_dict, DM_DEV_DEV, dmv->minor);