C++ (Cpp) IF_FEATURE_BLKID_TYPE Examples

Example #1

File: f2fs.c Project: ThinkIntegrate/busybox

int FAST_FUNC volume_id_probe_f2fs(struct volume_id *id /*,uint64_t off*/)
{
	struct f2fs_super_block *sb;

	// Go for primary super block (ignore second sb)
	dbg("f2fs: probing at offset 0x%x", F2FS_SB1_OFFSET);
	sb = volume_id_get_buffer(id, F2FS_SB1_OFFSET, sizeof(*sb));

	if (!sb)
		return -1;

	if (sb->magic != cpu_to_le32(F2FS_MAGIC))
		return -1;

	IF_FEATURE_BLKID_TYPE(id->type = "f2fs");

	// For version 1.0 we don't know sb structure and can't set label/uuid
	if (sb->major_ver == cpu_to_le16(1) && sb->minor_ver == cpu_to_le16(0))
		return 0;

	volume_id_set_label_unicode16(id, (uint8_t *)sb->volume_name,
				      LE, MIN(F2FS_LABEL_BYTES, VOLUME_ID_LABEL_SIZE));

	volume_id_set_uuid(id, sb->uuid, UUID_DCE);

	return 0;
}

Example #2

File: nilfs.c Project: AllardJ/Tomato

int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/)
{
	struct nilfs2_super_block *sb;

	// Primary super block
	dbg("nilfs: probing at offset 0x%x", NILFS_SB1_OFFSET);

	sb = volume_id_get_buffer(id, NILFS_SB1_OFFSET, sizeof(*sb));

	if (sb == NULL)
		return -1;

	if (sb->s_magic != NILFS_MAGIC)
		return -1;

	// The secondary superblock is not always used, so ignore it for now.
	// When used it is at 4K from the end of the partition (sb->s_dev_size - NILFS_SB2_OFFSET).

	volume_id_set_label_string(id, sb->s_volume_name, NILFS_LABEL_SIZE < VOLUME_ID_LABEL_SIZE ?
				NILFS_LABEL_SIZE : VOLUME_ID_LABEL_SIZE);
	volume_id_set_uuid(id, sb->s_uuid, UUID_DCE);

	if (sb->s_rev_level == 2)
		IF_FEATURE_BLKID_TYPE(id->type = "nilfs2");

	return 0;
}