java.io.FileNotFoundException: /cache/test/test.txt: open failed: EACCES (Permission denied)

Question

I am trying to copy the file from /storage/emulated/0/test.txt to /cache/SH_DIR/ via android user application ,

getting error like below

java.io.FileNotFoundException: /cache/test/test.txt: open failed: EACCES (Permission denied)

When I have created as system application like , Included Application code as past of AOSP then able to copy the file to /cache/SH_DIR/ location.

May I need to add anything in the SEpolicy to copy file to /cacahe/SH_DIR/ from user application.

Can you please help me , Thanks in advance