Allow configuring sandbox entitlements in OS X Swift Playgrounds

Originator:armadsen
Number:rdar://21677248 Date Originated:05-Jul-2015 12:40 PM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode-beta (7A121l)
Classification:Enhancement Reproducible:Always
 
Summary:
OS X Swift Playgrounds run in a sandbox where network access is permitted, but other prohibited-by-default actions are not. My motivation for filing this bug is that I’d like to be able to use a serial port in a playground. Use of serial ports requires a com.apple.security.device.serial entitlement in a sandboxed application. To my knowledge, it is not currently possible to specify custom sandbox entitlements for a Swift playground.

Steps to Reproduce:
Try to open a serial port from a Swift playground.

Expected Results:
The serial port opens successfully and can be used.

Actual Results:
The open() call returns error code 1, “Operation Not Permitted”

Notes:
The attached workspace, containing a playground demonstrates the problem. It assumes a serial port at /dev/cu.usbmodem14411 . This will need to be changed to a path to a valid serial port on the machine where it is being run, of course.

(Attachment can be downloaded here: https://www.dropbox.com/s/w49prikhuzkgjmc/SerialPlayground.zip?dl=0)

Comments

+1 spent an hour trying to figure out why my playground was borked.

By mkoukoullis at Sept. 5, 2015, 9:17 a.m. (reply...)

Ditto on "the need and use-case". Serial Port in Playground.

I'm in agreement with Armadsen. Having Serial Port ( ORSSerial ) access in a Playground kinda lives the "Playground Dream" of manipulating live data in a live development environment.

Beyond that, there are professional use-cases too. Those are important every now and then, right.

By Yury.Gitman at July 5, 2015, 11:04 p.m. (reply...)

Yury, I hope you'll file a duplicate radar with Apple.

By armadsen at July 6, 2015, 3:06 a.m. (reply...)

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