C++ (Cpp) PED_LE64_TO_CPU示例

示例#1

文件： jfs.c 项目： unsound/parted-freebsd

static PedGeometry*
jfs_probe (PedGeometry* geom)
{
	union {
		struct superblock	sb;
		char			bytes[512];
	} buf;

        /* FIXME: for now, don't even try to deal with larger sector size.  */
	if (geom->dev->sector_size != PED_SECTOR_SIZE_DEFAULT)
		return NULL;

	if (geom->length < JFS_SUPER_SECTOR + 1)
		return NULL;
	if (!ped_geometry_read (geom, &buf, JFS_SUPER_SECTOR, 1))
		return NULL;

	if (strncmp (buf.sb.s_magic, JFS_MAGIC, 4) == 0) {
		PedSector block_size = PED_LE32_TO_CPU (buf.sb.s_pbsize) / 512;
		PedSector block_count = PED_LE64_TO_CPU (buf.sb.s_size);

		return ped_geometry_new (geom->dev, geom->start,
					 block_size * block_count);
	} else {
		return NULL;
	}
}

示例#2

文件： xfs.c 项目： inteos/WBSAirback

static PedGeometry*
xfs_probe (PedGeometry* geom)
{
	PedSector	block_size;
	PedSector	block_count;
	union {
		struct xfs_sb	sb;
		char		bytes [512];
	} buf;

	if (geom->length < XFS_SB_DADDR + 1)
		return NULL;
	if (!ped_geometry_read (geom, &buf, XFS_SB_DADDR, 1))
		return NULL;

	if (PED_LE32_TO_CPU (buf.sb.sb_magicnum) == XFS_SB_MAGIC) {
		block_size = PED_LE32_TO_CPU (buf.sb.sb_blocksize) / 512;
		block_count = PED_LE64_TO_CPU (buf.sb.sb_dblocks);

		return ped_geometry_new (geom->dev, geom->start,
					 block_size * block_count);
	}

	if (PED_BE32_TO_CPU (buf.sb.sb_magicnum) == XFS_SB_MAGIC) {
		block_size = PED_BE32_TO_CPU (buf.sb.sb_blocksize) / 512;
		block_count = PED_BE64_TO_CPU (buf.sb.sb_dblocks);

		return ped_geometry_new (geom->dev, geom->start,
					 block_size * block_count);
	}

	return NULL;
}

示例#3

文件： ntfs.c 项目： schidler/flyzjhz-rt-n56u

static PedGeometry*
ntfs_probe (PedGeometry* geom)
{
    char	buf[512];

    if (!ped_geometry_read (geom, buf, 0, 1))
        return 0;

    if (strncmp (NTFS_SIGNATURE, buf + 3, strlen (NTFS_SIGNATURE)) == 0)
        return ped_geometry_new (geom->dev, geom->start,
                                 PED_LE64_TO_CPU (*(uint64_t*)
                                         (buf + 0x28)));
    else
        return NULL;
}

示例#4

文件： jfs.c 项目： skizhak/open-media-flow-controller

static PedGeometry*
jfs_probe (PedGeometry* geom)
{
	union {
		struct superblock	sb;
		char			bytes[512];
	} buf;

	if (geom->length < JFS_SUPER_SECTOR + 1)
		return NULL;
	if (!ped_geometry_read (geom, &buf, JFS_SUPER_SECTOR, 1))
		return NULL;

	if (strncmp (buf.sb.s_magic, JFS_MAGIC, 4) == 0) {
		PedSector block_size = PED_LE32_TO_CPU (buf.sb.s_pbsize) / 512;
		PedSector block_count = PED_LE64_TO_CPU (buf.sb.s_size);

		return ped_geometry_new (geom->dev, geom->start,
					 block_size * block_count);
	} else {
		return NULL;
	}
}