fs/zfs/zvol.c

119 	minor_t		zv_minor;	/* minor number */
234  * Find a free minor number.
239 	minor_t minor;
243 	for (minor = 1; minor <= ZVOL_MAX_MINOR; minor++)
244 		if (ddi_get_soft_state(zvol_state, minor) == NULL)
245 			return (minor);
253 	minor_t minor;
258 	for (minor = 1; minor <= ZVOL_MAX_MINOR; minor++) {
259 		zv = ddi_get_soft_state(zvol_state, minor);
462 zvol_name2minor(const char *name, minor_t *minor)
468 	if (minor && zv)
469 		*minor = zv->zv_minor;
475  * Create a minor node (plus a whole lot more) for the specified volume.
483 	minor_t minor = 0;
507 	 * same minor number we used last time.
526 			minor = getminor(sb.st_rdev);
534 	 * If we found a minor but it's already in use, we must pick a new one.
536 	if (minor != 0 && ddi_get_soft_state(zvol_state, minor) != NULL)
537 		minor = 0;
539 	if (minor == 0)
540 		minor = zvol_minor_alloc();
542 	if (minor == 0) {
549 	if (ddi_soft_state_zalloc(zvol_state, minor) != DDI_SUCCESS) {
555 	(void) ddi_prop_update_string(minor, zfs_dip, ZVOL_PROP_NAME,
559 	    minor, DDI_PSEUDO, 0) == DDI_FAILURE) {
560 		ddi_soft_state_free(zvol_state, minor);
568 	    minor, DDI_PSEUDO, 0) == DDI_FAILURE) {
570 		ddi_soft_state_free(zvol_state, minor);
576 	zv = ddi_get_soft_state(zvol_state, minor);
580 	zv->zv_minor = minor;
614  * Remove minor node for the specified volume.
775 	minor_t minor;
781 	for (minor = 1; minor <= ZVOL_MAX_MINOR; minor++) {
783 		zv = ddi_get_soft_state(zvol_state, minor);
882 	minor_t minor = getminor(*devp);
886 	if (minor == 0)			/* This is the control device */
891 	zv = ddi_get_soft_state(zvol_state, minor);
937 	minor_t minor = getminor(dev);
941 	if (minor == 0)		/* This is the control device */
946 	zv = ddi_get_soft_state(zvol_state, minor);
1336 	minor_t minor = getminor(dev);
1343 	if (minor == 0)			/* This is the control device */
1346 	zv = ddi_get_soft_state(zvol_state, minor);
1373 	minor_t minor = getminor(dev);
1379 	if (minor == 0)			/* This is the control device */
1382 	zv = ddi_get_soft_state(zvol_state, minor);
1422 	minor_t minor = getminor(dev);
1429 	if (minor == 0)			/* This is the control device */
1432 	zv = ddi_get_soft_state(zvol_state, minor);