# Cannot Sandbox App

**URL:** <https://forum.legato.io/t/cannot-sandbox-app/5554>\
**Category:** Uncategorized\
**Created:** [December 28, 2020, 8:04am UTC](https://forum.legato.io/t/cannot-sandbox-app/5554 "2020-12-28T08:04:06Z")\
**Posts on this page:** 1\
**Showing post:** 8

<div class="post-metadata">

**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:** [December 28, 2020, 2:16pm UTC](https://forum.legato.io/t/cannot-sandbox-app/5554/8 "2020-12-28T14:16:18Z")

</div>

Is that you must use sandbox?

From the log, do you see SMACK issue like below?

```
Apr 15 15:21:34 swi-mdm9x28-wp user.info Legato: INFO | httpGet[2472] | HTTP Get!
Apr 15 15:21:34 swi-mdm9x28-wp user.notice kernel: [562.769934] audit: type=1400 audit(1586935294.631:9): lsm=SMACK fn=smack_inode_getattr action=denied subject="app.http_get_WP76" object="admin" requested=r pid=2472 comm="httpGet" path="pipe:[11977]" dev="pipefs" ino=11977
Apr 15 07:21:34 swi-mdm9x28-wp user.err Legato: =ERR= | httpGet[2472]/httpGetComponent T=main | httpGet.c GetUrl() 79 | curl_easy_perform() failed: Couldn't resolve host name

```

If so, you might need to change the /etc/resolv.conf  
permission

> [@Opening Files in Sandboxed App](https://forum.legato.io/t/opening-files-in-sandboxed-app/5525/4):
>
> 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-md…

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