/* handling of delta buffers */
extern void *diff_delta(void *from_buf, unsigned long from_size,
void *to_buf, unsigned long to_size,
- unsigned long *delta_size, unsigned long max_size);
+ unsigned long *delta_size, unsigned long max_size,
+ void **from_index);
extern void *patch_delta(void *src_buf, unsigned long src_size,
void *delta_buf, unsigned long delta_size,
unsigned long *dst_size);
static inline unsigned long get_delta_hdr_size(const unsigned char **datap)
{
const unsigned char *data = *datap;
- unsigned char cmd = *data++;
- unsigned long size = cmd & ~0x80;
- int i = 7;
- while (cmd & 0x80) {
+ unsigned char cmd;
+ unsigned long size = 0;
+ int i = 0;
+ do {
cmd = *data++;
size |= (cmd & ~0x80) << i;
i += 7;
- }
+ } while (cmd & 0x80);
*datap = data;
return size;
}