# Opening Files in Sandboxed App

**URL:** <https://forum.legato.io/t/opening-files-in-sandboxed-app/5525>\
**Category:** Uncategorized\
**Created:** [November 30, 2020, 8:38am UTC](https://forum.legato.io/t/opening-files-in-sandboxed-app/5525 "2020-11-30T08:38:36Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\
**Post date:** [November 30, 2020, 10:27am UTC](https://forum.legato.io/t/opening-files-in-sandboxed-app/5525/4 "2020-11-30T10:27:28Z")

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I don’t see problem with WP76 R13.  
You can use my app attached.

root@swi-mdm9x28-wp:/tmp# cd /tmp  
root@swi-mdm9x28-wp:/tmp#  
root@swi-mdm9x28-wp:/tmp# echo hello\_everybody \> hello.txt  
root@swi-mdm9x28-wp:/tmp#  
root@swi-mdm9x28-wp:/tmp# chmod o+w hello.txt  
root@swi-mdm9x28-wp:/tmp#  
root@swi-mdm9x28-wp:/tmp# xattr set ‘security.SMACK64’ ‘app.hello7rwx’ hello.txt  
root@swi-mdm9x28-wp:/tmp#  
root@swi-mdm9x28-wp:/tmp# xattr get hello.txt  
name=security.SMACK64; value=app.hello7rwx  
root@swi-mdm9x28-wp:/tmp#  
root@swi-mdm9x28-wp:/tmp# app start hello7  
root@swi-mdm9x28-wp:/tmp#  
root@swi-mdm9x28-wp:/tmp# cat /tmp/hello.txt  
hello\_everybody  
hel

[hello7.rar](https://forum.legato.io/uploads/short-url/3zWsG8aCUrilx8UkqaZbMvR1GNz.rar) (297.9 KB)

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