indradhanush/codesign_gdb.md

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Created June 21, 2017 20:29

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Codesign gdb on OSX

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codesign_gdb.md

If you are getting this in gdb on OSX while trying to run a program:

Unable to find Mach task port for process-id 57573: (os/kern) failure (0x5).
 (please check gdb is codesigned - see taskgated(8))

Open Keychain Access
In menu, open Keychain Access > Certificate Assistant > Create a certificate
Give it a name (e.g. gdbc)

Identity type: Self Signed Root
Certificate type: Code Signing
Check: let me override defaults

Continue until "specify a location for..."
Keychain = System
Close. Find certificate in System keychains.
Get Info
Expand Trust, set Code signing to always trust
killall taskgated
Enable root account:
Open System Preferences
Go to User & Groups > Unlock
Login Options > "Join" (next to Network Account Server)
Click "Open Directory Utility"
Go up to Edit > Enable Root User
codesign -fs gdbc /usr/local/bin/gdb -- asks for root password
Disable root account

Done!

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