C++ (Cpp) exfat_block_get Examples

Example #1

File: exfat_bitmap.c Project: fhector/helenOS-0.5-Hector

int exfat_bitmap_set_cluster(exfat_bs_t *bs, service_id_t service_id, 
    exfat_cluster_t clst)
{
	fs_node_t *fn;
	block_t *b = NULL;
	exfat_node_t *bitmapp;
	uint8_t *bitmap;
	int rc;

	clst -= EXFAT_CLST_FIRST;
	
	rc = exfat_bitmap_get(&fn, service_id);
	if (rc != EOK)
		return rc;
	bitmapp = EXFAT_NODE(fn);
	
	aoff64_t offset = clst / 8;
	rc = exfat_block_get(&b, bs, bitmapp, offset / BPS(bs), BLOCK_FLAGS_NONE);
	if (rc != EOK) {
		(void) exfat_node_put(fn);
		return rc;
	}
	bitmap = (uint8_t *)b->data;
	bitmap[offset % BPS(bs)] |= (1 << (clst % 8));

	b->dirty = true;
	rc = block_put(b);
	if (rc != EOK) {
		(void) exfat_node_put(fn);
		return rc;
	}
	
	return exfat_node_put(fn);
}

Example #2

File: exfat_fat.c Project: jvesely/helenos

int
exfat_read_uctable(exfat_bs_t *bs, exfat_node_t *nodep, uint8_t *uctable)
{
	size_t i, blocks, count;
	block_t *b;
	int rc;
	blocks = ROUND_UP(nodep->size, BPS(bs))/BPS(bs);
	count = BPS(bs);
	
	for (i = 0; i < blocks; i++) {
		rc = exfat_block_get(&b, bs, nodep, i, BLOCK_FLAGS_NOREAD);
		if (rc != EOK)
			return rc;
		if (i == blocks - 1)
			count = nodep->size - i * BPS(bs);
		memcpy(uctable, b->data, count);
		uctable += count;
		rc = block_put(b);
		if (rc != EOK)
			return rc;
	}

	return EOK;
}