C++ (Cpp) exfat_write Examples

Example #1

File: vbr.c Project: XperiaMultiROM/android_bootable_recovery

static int vbr_write(struct exfat_dev* dev)
{
	struct exfat_super_block sb;
	uint32_t checksum;
	le32_t* sector = malloc(get_sector_size());
	size_t i;

	if (sector == NULL)
	{
		exfat_error("failed to allocate sector-sized block of memory");
		return 1;
	}

	init_sb(&sb);
	if (exfat_write(dev, &sb, sizeof(struct exfat_super_block)) < 0)
	{
		free(sector);
		exfat_error("failed to write super block sector");
		return 1;
	}
	checksum = exfat_vbr_start_checksum(&sb, sizeof(struct exfat_super_block));

	memset(sector, 0, get_sector_size());
	sector[get_sector_size() / sizeof(sector[0]) - 1] =
			cpu_to_le32(0xaa550000);
	for (i = 0; i < 8; i++)
	{
		if (exfat_write(dev, sector, get_sector_size()) < 0)
		{
			free(sector);
			exfat_error("failed to write a sector with boot signature");
			return 1;
		}
		checksum = exfat_vbr_add_checksum(sector, get_sector_size(), checksum);
	}

	memset(sector, 0, get_sector_size());
	for (i = 0; i < 2; i++)
	{
		if (exfat_write(dev, sector, get_sector_size()) < 0)
		{
			free(sector);
			exfat_error("failed to write an empty sector");
			return 1;
		}
		checksum = exfat_vbr_add_checksum(sector, get_sector_size(), checksum);
	}

	for (i = 0; i < get_sector_size() / sizeof(sector[0]); i++)
		sector[i] = cpu_to_le32(checksum);
	if (exfat_write(dev, sector, get_sector_size()) < 0)
	{
		free(sector);
		exfat_error("failed to write checksum sector");
		return 1;
	}

	free(sector);
	return 0;
}

Example #2

File: cbm.c Project: svn2github/exfat

static int cbm_write(struct exfat_dev* dev)
{
	uint32_t allocated_clusters =
			DIV_ROUND_UP(cbm.get_size(), get_cluster_size()) +
			DIV_ROUND_UP(uct.get_size(), get_cluster_size()) +
			DIV_ROUND_UP(rootdir.get_size(), get_cluster_size());
	size_t bitmap_size = DIV_ROUND_UP(allocated_clusters, CHAR_BIT);
	bitmap_t* bitmap = malloc(BMAP_SIZE(bitmap_size));
	size_t i;

	if (bitmap == NULL)
	{
		exfat_error("failed to allocate bitmap of %zu bytes",
				BMAP_SIZE(bitmap_size));
		return 1;
	}
	memset(bitmap, 0, BMAP_SIZE(bitmap_size));

	for (i = 0; i < bitmap_size * CHAR_BIT; i++)
		if (i < allocated_clusters)
			BMAP_SET(bitmap, i);
	if (exfat_write(dev, bitmap, bitmap_size) < 0)
	{
		free(bitmap);
		exfat_error("failed to write bitmap of %zu bytes", bitmap_size);
		return 1;
	}
	free(bitmap);
	return 0;
}

Example #3

File: uct.c Project: carriercomm/solaris-sparc-fuse

static int uct_write(struct exfat_dev* dev)
{
	if (exfat_write(dev, upcase_table, sizeof(upcase_table)) < 0)
	{
		exfat_error("failed to write upcase table of %zu bytes",
				sizeof(upcase_table));
		return 1;
	}
	return 0;
}

Example #4

File: fat.c Project: carriercomm/solaris-sparc-fuse

static cluster_t fat_write_entry(struct exfat_dev* dev, cluster_t cluster,
		cluster_t value)
{
	le32_t fat_entry = cpu_to_le32(value);
	if (exfat_write(dev, &fat_entry, sizeof(fat_entry)) < 0)
	{
		exfat_error("failed to write FAT entry 0x%x", value);
		return 0;
	}
	return cluster + 1;
}

Example #5

File: mkexfat.c Project: Ever-Never/Extended-Team-Win-Recovery-Project

static int erase_object(struct exfat_dev* dev, const void* block,
		size_t block_size, off64_t start, off64_t size)
{
	const off64_t block_count = DIV_ROUND_UP(size, block_size);
	off64_t i;

	if (exfat_seek(dev, start, SEEK_SET) == (off64_t) -1)
	{
		exfat_error("seek to 0x%"PRIx64" failed", start);
		return 1;
	}
	for (i = 0; i < size; i += block_size)
	{
		if (exfat_write(dev, block, MIN(size - i, block_size)) < 0)
		{
			exfat_error("failed to erase block %"PRIu64"/%"PRIu64
					" at 0x%"PRIx64, i + 1, block_count, start);
			return 1;
		}
	}
	return 0;
}