macOS Mojave cannot find /var/db/DetachedSignatures with Swift 4

swift macos system profiler
Magno picture Magno · Sep 26, 2018 · Viewed 7.2k times · Source

I had no such error with High Sierra, now with Mojave my application done with Swift 4 is issuing this error. It will happen when I try to get software information by call: /usr/sbin/system_profiler SPApplicationsDataType

My application wont fail and works but I notice that it will expose this error when running:

system_profiler[2052:52918] [logging-persist] os_unix.c:42249: (0) open(/var/db/DetachedSignatures) - Undefined error: 0

I guess it is related to code signatures but I don't know how to handle that, maybe a bug as there isn't any file called DetachedSignatures inside /var/db

Answer

John Ballinger picture John Ballinger · Jun 20, 2019

os_unix.c:37227: (21) seekAndRead(/var/db/DetachedSignatures) - Is a directory

sudo touch /var/db/DetachedSignatures

This fixed the issue on my machine.

Related questions

Check OS version in Swift?

I'm trying to check system information in Swift. I figured out, that it could be achieved by code: var sysData:CMutablePointer<utsname> = nil let retVal:CInt = uname(sysData) I have two problems with this code: What should be …

Read More
How to remove all subviews of a view in Swift?

I'm looking for a simple method to remove at once all subviews from a superview instead of removing them one by one. //I'm trying something like this, but is not working let theSubviews : Array = container_view.subviews for (view : NSView) …

Read More
Getting a "This application is modifying the autolayout engine from a background thread" error?

Been encountering this error a lot in my OS X using swift: "This application is modifying the autolayout engine from a background thread, which can lead to engine corruption and weird crashes. This will cause an exception in a future …

Read More