diff --git a/minadbd/fuse_adb_provider.cpp b/minadbd/fuse_adb_provider.cpp
index 9bd3f23..cada4bd 100644
--- a/minadbd/fuse_adb_provider.cpp
+++ b/minadbd/fuse_adb_provider.cpp
@@ -27,30 +27,32 @@
 #include "adb_io.h"
 #include "fuse_sideload.h"
 
-int read_block_adb(const adb_data& ad, uint32_t block, uint8_t* buffer, uint32_t fetch_size) {
-  if (!WriteFdFmt(ad.sfd, "%08u", block)) {
+bool FuseAdbDataProvider::ReadBlockAlignedData(uint8_t* buffer, uint32_t fetch_size,
+                                               uint32_t start_block) const {
+  if (!WriteFdFmt(fd_, "%08u", start_block)) {
     fprintf(stderr, "failed to write to adb host: %s\n", strerror(errno));
-    return -EIO;
+    return false;
   }
 
-  if (!ReadFdExactly(ad.sfd, buffer, fetch_size)) {
+  if (!ReadFdExactly(fd_, buffer, fetch_size)) {
     fprintf(stderr, "failed to read from adb host: %s\n", strerror(errno));
-    return -EIO;
+    return false;
   }
 
-  return 0;
+  return true;
 }
 
-int run_adb_fuse(int sfd, uint64_t file_size, uint32_t block_size) {
-  adb_data ad;
-  ad.sfd = sfd;
-  ad.file_size = file_size;
-  ad.block_size = block_size;
+void FuseAdbDataProvider::Close() {
+  WriteFdExactly(fd_, "DONEDONE");
+}
+
+int run_adb_fuse(android::base::unique_fd&& sfd, uint64_t file_size, uint32_t block_size) {
+  FuseAdbDataProvider adb_data_reader(std::move(sfd), file_size, block_size);
 
   provider_vtab vtab;
-  vtab.read_block = std::bind(read_block_adb, ad, std::placeholders::_1, std::placeholders::_2,
-                              std::placeholders::_3);
-  vtab.close = [&ad]() { WriteFdExactly(ad.sfd, "DONEDONE"); };
+  vtab.read_block = std::bind(&FuseAdbDataProvider::ReadBlockAlignedData, &adb_data_reader,
+                              std::placeholders::_2, std::placeholders::_3, std::placeholders::_1);
+  vtab.close = [&adb_data_reader]() { adb_data_reader.Close(); };
 
   return run_fuse_sideload(vtab, file_size, block_size);
 }