Function fmap_find_region_name

src/lib/fmap.c:214–258

}

int fmap_find_region_name(const struct region * const ar,
	char name[FMAP_STRLEN])
{
	struct region_device fmrd;
	size_t offset;

	if (name == NULL || ar == NULL)
		return -1;

	if (find_fmap_directory(&fmrd))
		return -1;

	/* Start reading the areas just after fmap header. */
	offset = sizeof(struct fmap);

	while (1) {
		struct fmap_area *area;

		area = rdev_mmap(&fmrd, offset, sizeof(*area));

		if (area == NULL)
			return -1;

		if (region_offset(ar) != le32toh(area->offset) ||
		    region_sz(ar) != le32toh(area->size)) {
			rdev_munmap(&fmrd, area);
			offset += sizeof(struct fmap_area);
			continue;
		}

		printk(BIOS_DEBUG, "FMAP: area (%zx, %zx) found, named %s\n",
			region_offset(ar), region_sz(ar), area->name);

		memcpy(name, area->name, FMAP_STRLEN);

		rdev_munmap(&fmrd, area);

		return 0;
	}

	printk(BIOS_DEBUG, "FMAP: area (%zx, %zx) not found\n",
		region_offset(ar), region_sz(ar));

	return -1;
}

ssize_t fmap_read_area(const char *name, void *buffer, size_t size)
{