[Question] getprop in a confined app?

[pparent]

Hi,

In order to adapt properly the scaling of my app I would need to do

/usr/bin/getprop ro.sf.lcd_density

The problem is that if I do that inside a confined app I get

aa-exec[6536]: ./launcher.sh: 12: /usr/bin/getprop: Permission denied

But if I copy the binary /usr/bin/getprop inside my app install repo in /opt/click.ubuntu.com/ and call it then it works well. The thing is I want to make something clean, and not dumping a binary from the phone inside my app, not even knowing if it will work for every phone.

Is there a way to do without copying the getprop binary in my app install dir? Otherwise is there a way to download the getprop binary from official ubports build sources? Where does this binary come from?

Thank's a lot in advance!

[pparent]

said in [Question] getprop in a confined app?:

libhybris-utils

Ok I've found

apt download libhybris-utils:arm64

Inside the clickable containre allows to download the deb package, then you can extract from it the getprop binary.

[lduboeuf]

@pparent
I doubt a confined app can access Android properties.
For the "where does it came from" :
https://gitlab.com/ubports/development/core/packaging/libhybris/-/blob/ubports/latest/debian/control?ref_type=heads#L153

[pparent]

@lduboeuf said in [Question] getprop in a confined app?:

I doubt a confined app can access Android properties.

I can garanty you that if it embeeds a local copy of /usr/bin/getprop then it can.

[pparent]

@lduboeuf said in [Question] getprop in a confined app?:

For the "where does it came from" :
https://gitlab.com/ubports/development/core/packaging/libhybris/-/blob/ubports/latest/debian/control?ref_type=heads#L153

Thank's but it there a way to download the compiled version in a similar fashion that it would be doable with lauanchpad in official Canonical Ubuntu ?

[pparent]

This is outdated:

https://launchpad.net/ubuntu/xenial/+package/libhybris-utils

[pparent]

said in [Question] getprop in a confined app?:

libhybris-utils

Ok I've found

apt download libhybris-utils:arm64

Inside the clickable containre allows to download the deb package, then you can extract from it the getprop binary.