verity: Track the libsparse API change.

libsparse is updating the 'len' parameter, from 'int' to 'size_t', in
the callback parameter of sparse_file_callback(). The value represents
the chunk size, which could be legitimately larger than INT_MAX.

Bug: 78432315
Test: `m dist` with aosp_marlin-userdebug
Change-Id: I0c4b9465fd145b6a35d8228430362d25b8fd4c6e

2 files changed, 3 insertions, 3 deletions

diff --git a/verity/build_verity_tree.cpp b/verity/build_verity_tree.cpp
index e841c20e..ad812ed8 100644
--- a/verity/build_verity_tree.cpp
+++ b/verity/build_verity_tree.cpp
@@ -90,7 +90,7 @@ int hash_blocks(const EVP_MD *md,
     return 0;
 }
 
-int hash_chunk(void *priv, const void *data, int len)
+int hash_chunk(void *priv, const void *data, size_t len)
 {
     struct sparse_hash_ctx *ctx = (struct sparse_hash_ctx *)priv;
     assert(len % ctx->block_size == 0);
@@ -101,7 +101,7 @@ int hash_chunk(void *priv, const void *data, int len)
                     ctx->salt, ctx->salt_size, ctx->block_size);
         ctx->hashes += s;
     } else {
-        for (size_t i = 0; i < (size_t)len; i += ctx->block_size) {
+        for (size_t i = 0; i < len; i += ctx->block_size) {
             memcpy(ctx->hashes, ctx->zero_block_hash, ctx->hash_size);
             ctx->hashes += ctx->hash_size;
         }
diff --git a/verity/fec/image.cpp b/verity/fec/image.cpp
index 861ca601..58853cf5 100644
--- a/verity/fec/image.cpp
+++ b/verity/fec/image.cpp
@@ -77,7 +77,7 @@ static void calculate_rounds(uint64_t size, image *ctx)
     ctx->rounds = fec_div_round_up(ctx->blocks, ctx->rs_n);
 }
 
-static int process_chunk(void *priv, const void *data, int len)
+static int process_chunk(void *priv, const void *data, size_t len)
 {
     image *ctx = (image *)priv;
     assert(len % FEC_BLOCKSIZE == 0);