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swiftmacossystemprofiler

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

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

Solution

  • I encountered the same problem, and I copied the DetachedSignatures file from some other guy's MacBook and put it under /var/db path on my iMac. It solved the problem. Don't know why some mac just don't have this DetachedSignatures file. Not very many useful explanations on the Internet.