mtd/ubi/kapi.c

368  * @lnum: logical eraseblock number to read from
375 static int leb_read_sanity_check(struct ubi_volume_desc *desc, int lnum,
382 	if (vol_id < 0 || vol_id >= ubi->vtbl_slots || lnum < 0 ||
383 	    lnum >= vol->used_ebs || offset < 0 || len < 0 ||
391 		if (lnum == vol->used_ebs - 1 &&
405  * @lnum: logical eraseblock number to read from
411  * This function reads data from offset @offset of logical eraseblock @lnum and
429 int ubi_leb_read(struct ubi_volume_desc *desc, int lnum, char *buf, int offset,
436 	dbg_gen("read %d bytes from LEB %d:%d:%d", len, vol_id, lnum, offset);
438 	err = leb_read_sanity_check(desc, lnum, offset, len);
445 	err = ubi_eba_read_leb(ubi, vol, lnum, buf, offset, len, check);
459  * @lnum: logical eraseblock number to read from
469 int ubi_leb_read_sg(struct ubi_volume_desc *desc, int lnum, struct ubi_sgl *sgl,
476 	dbg_gen("read %d bytes from LEB %d:%d:%d", len, vol_id, lnum, offset);
478 	err = leb_read_sanity_check(desc, lnum, offset, len);
485 	err = ubi_eba_read_leb_sg(ubi, vol, sgl, lnum, offset, len, check);
499  * @lnum: logical eraseblock number to write to
505  * logical eraseblock @lnum.
521 int ubi_leb_write(struct ubi_volume_desc *desc, int lnum, const void *buf,
528 	dbg_gen("write %d bytes to LEB %d:%d:%d", len, vol_id, lnum, offset);
536 	if (lnum < 0 || lnum >= vol->reserved_pebs || offset < 0 || len < 0 ||
547 	return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len);
554  * @lnum: logical eraseblock number to change
566 int ubi_leb_change(struct ubi_volume_desc *desc, int lnum, const void *buf,
573 	dbg_gen("atomically write %d bytes to LEB %d:%d", len, vol_id, lnum);
581 	if (lnum < 0 || lnum >= vol->reserved_pebs || len < 0 ||
591 	return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len);
598  * @lnum: logical eraseblock number
600  * This function un-maps logical eraseblock @lnum and synchronously erases the
607 int ubi_leb_erase(struct ubi_volume_desc *desc, int lnum)
613 	dbg_gen("erase LEB %d:%d", vol->vol_id, lnum);
618 	if (lnum < 0 || lnum >= vol->reserved_pebs)
624 	err = ubi_eba_unmap_leb(ubi, vol, lnum);
628 	return ubi_wl_flush(ubi, vol->vol_id, lnum);
635  * @lnum: logical eraseblock number
637  * This function un-maps logical eraseblock @lnum and schedules the
668 int ubi_leb_unmap(struct ubi_volume_desc *desc, int lnum)
673 	dbg_gen("unmap LEB %d:%d", vol->vol_id, lnum);
678 	if (lnum < 0 || lnum >= vol->reserved_pebs)
684 	return ubi_eba_unmap_leb(ubi, vol, lnum);
691  * @lnum: logical eraseblock number
693  * This function maps an un-mapped logical eraseblock @lnum to a physical
695  * function the logical eraseblock @lnum will be empty (contain only %0xFF
704 int ubi_leb_map(struct ubi_volume_desc *desc, int lnum)
709 	dbg_gen("unmap LEB %d:%d", vol->vol_id, lnum);
714 	if (lnum < 0 || lnum >= vol->reserved_pebs)
720 	if (vol->eba_tbl[lnum] >= 0)
723 	return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
730  * @lnum: logical eraseblock number
732  * This function checks if logical eraseblock @lnum is mapped to a physical
743 int ubi_is_mapped(struct ubi_volume_desc *desc, int lnum)
747 	dbg_gen("test LEB %d:%d", vol->vol_id, lnum);
749 	if (lnum < 0 || lnum >= vol->reserved_pebs)
755 	return vol->eba_tbl[lnum] >= 0;
785  * @lnum: logical eraseblock number to flush for
793 int ubi_flush(int ubi_num, int vol_id, int lnum)
802 	err = ubi_wl_flush(ubi, vol_id, lnum);