more FILE_OFFSET_BITS == 64 adjustments.
diff --git a/include/libbb.h b/include/libbb.h
index d0896ab..05f61f2 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -96,7 +96,7 @@
 
 int copy_file(const char *srcName, const char *destName,
 		 int setModes, int followLinks, int forceFlag);
-int copy_file_chunk(int srcFd, int dstFd, size_t remaining);
+int copy_file_chunk(int srcFd, int dstFd, off_t remaining);
 char *buildName(const char *dirName, const char *fileName);
 int makeString(int argc, const char **argv, char *buf, int bufLen);
 char *getChunk(int size);