Function cbfs_image_create

util/cbfstool/cbfs_image.c:193–241

}

int cbfs_image_create(struct cbfs_image *image, size_t entries_size)
{
	assert(image);
	assert(image->buffer.data);

	size_t empty_header_len = cbfs_calculate_file_header_size("");
	uint32_t entries_offset = 0;
	uint32_t align = CBFS_ALIGNMENT;
	if (image->has_header) {
		entries_offset = image->header.offset;

		if (entries_offset > image->buffer.size) {
			ERROR("CBFS file entries are located outside CBFS itself\n");
			return -1;
		}

		align = image->header.align;
	}

	// This attribute must be given in order to prove that this module
	// correctly preserves certain CBFS properties. See the block comment
	// near the top of this file (and the associated commit message).
	if (align < empty_header_len) {
		ERROR("CBFS must be aligned to at least %zu bytes\n",
							empty_header_len);
		return -1;
	}

	if (entries_size > image->buffer.size - entries_offset) {
		ERROR("CBFS doesn't have enough space to fit its file entries\n");
		return -1;
	}

	if (empty_header_len > entries_size) {
		ERROR("CBFS is too small to fit any header\n");
		return -1;
	}
	struct cbfs_file *entry_header =
		(struct cbfs_file *)(image->buffer.data + entries_offset);
	// This alignment is necessary in order to prove that this module
	// correctly preserves certain CBFS properties. See the block comment
	// near the top of this file (and the associated commit message).
	entries_size -= entries_size % align;

	size_t capacity = entries_size - empty_header_len;
	LOG("Created CBFS (capacity = %zu bytes)\n", capacity);
	return cbfs_create_empty_entry(entry_header, CBFS_TYPE_NULL,
		capacity, "");
}

int cbfs_legacy_image_create(struct cbfs_image *image,
			     uint32_t architecture,