cend = le32_to_cpu(*(__le32 *)(bh->b_data + (blockendptr & bufmask)));
brelse(bh);
+ if (cstart > cend)
+ goto eio;
+
csize = cend-cstart;
+ if (csize > deflateBound(1UL << zisofs_block_shift))
+ goto eio;
+
/* Now page[] contains an array of pages, any of which can be NULL,
and the locks on which we hold. We should now read the data and
release the pages. If the pages are NULL the decompressed data
return err;
}
-struct address_space_operations zisofs_aops = {
+const struct address_space_operations zisofs_aops = {
.readpage = zisofs_readpage,
/* No sync_page operation supported? */
/* No bmap operation supported */