libsparse: Fix overflow of merged sparse chunk length

Merging sparse chunk can make sparse map block bigger than 4GiB,
that can't be covered by unsigned integer type. Fix this by
changing unsigned int to uint64_t type.

Test: sparse build
Bug: 162808120
Change-Id: Id4d3f88f9d531c25c3937c99b2c81efb915605ee
Signed-off-by: Hyeongseok Kim <hyeongseok@gmail.com>
Cc: hyeongseok.kim <hyeongseok.kim@lge.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/libsparse/sparse.cpp b/libsparse/sparse.cpp
index 8622b4c39..396e7eb0c 100644
--- a/libsparse/sparse.cpp
+++ b/libsparse/sparse.cpp
@@ -50,21 +50,21 @@ void sparse_file_destroy(struct sparse_file* s) {
   free(s);
 }
 
-int sparse_file_add_data(struct sparse_file* s, void* data, unsigned int len, unsigned int block) {
+int sparse_file_add_data(struct sparse_file* s, void* data, uint64_t len, unsigned int block) {
   return backed_block_add_data(s->backed_block_list, data, len, block);
 }
 
-int sparse_file_add_fill(struct sparse_file* s, uint32_t fill_val, unsigned int len,
+int sparse_file_add_fill(struct sparse_file* s, uint32_t fill_val, uint64_t len,
                          unsigned int block) {
   return backed_block_add_fill(s->backed_block_list, fill_val, len, block);
 }
 
 int sparse_file_add_file(struct sparse_file* s, const char* filename, int64_t file_offset,
-                         unsigned int len, unsigned int block) {
+                         uint64_t len, unsigned int block) {
   return backed_block_add_file(s->backed_block_list, filename, file_offset, len, block);
 }
 
-int sparse_file_add_fd(struct sparse_file* s, int fd, int64_t file_offset, unsigned int len,
+int sparse_file_add_fd(struct sparse_file* s, int fd, int64_t file_offset, uint64_t len,
                        unsigned int block) {
   return backed_block_add_fd(s->backed_block_list, fd, file_offset, len, block);
 }