Function __bpdt_reset

util/cbfstool/ifwitool.c:925–951

* This function is used by repack to count the number of BPDT and S-BPDT * entries that are present. It frees the current buffers used by the entries * and allocates fresh buffers that can be used for repacking. Returns BPDT * entries which are empty and need to be filled in. */

 * entries which are empty and need to be filled in.
 */
static void __bpdt_reset(struct buffer *b, size_t count, size_t size)
{
	size_t bpdt_size = BPDT_HEADER_SIZE + count * BPDT_ENTRY_SIZE;
	assert(size >= bpdt_size);

	/*
	 * If buffer does not have the required size, allocate a fresh buffer.
	 */
	if (buffer_size(b) != size) {
		struct buffer temp;
		alloc_buffer(&temp, size, b->name);
		memcpy(buffer_get(&temp), buffer_get(b), buffer_size(b));
		buffer_delete(b);
		*b = temp;
	}

	struct bpdt *bpdt = buffer_get(b);
	uint8_t *ptr = (uint8_t *)&bpdt->e[0];
	size_t entries_size = BPDT_ENTRY_SIZE * count;

	/* Zero out BPDT entries. */
	memset(ptr, 0, entries_size);
	/* Fill any pad-space with FF. */
	memset(ptr + entries_size, 0xFF, size - bpdt_size);

	bpdt->h.descriptor_count = count;
}

static void bpdt_reset(void)
{