Subject: bug#61385: 30.0.50; android eshell cannot executable file under ~/ directory

From: Po Lu <[email-masked]>
Date: Fri, 10 Feb 2023 18:59:30 +0800

xiliuya <[email-masked]> writes:

> Po Lu <[email-masked]> writes:
>
>> xiliuya <[email-masked]> writes:
>>
>>> --text follows this line--
>>>
>>> My operation is as follows:
>>> 1. cp /system/bin/sh .
>>> 2. chmod 755 sh
>>> 3. ./sh
>>> 4. libandroid-emacs.so: /data/data/org.gnu.emacs/files/sh: Permission
>>> denied
>>
>> This is described under (emacs)Android Environment.  On Android, system
>> security policy prevents launching executables from read-write
>> directories.
>>
>> Free versions of Android allow you to obtain access as the super user.
>> In that case, run:
>>
>>   C-x C-f /su:/data/data/org.gnu.emacs/files RET
>>
>> and run the binary as the super user instead.
>
> I see. I found another alternative is to modify AndroidManifest.xml:
>
> 	-    android:targetSdkVersion="33"/>
>         +    android:targetSdkVersion="28"/>

The Android developers say they will progressively block applications
targeting older SDK versions from being installed, so that is not a real
long-term option.