Gregory's Serverthough it seems that you're right that file handles do not normally have mach ports on Darwin (which is surprising to me):
a program which does nothing has 11 ports opened. modify that program to open a file and it still only has 11 ports opened.
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 though it seems that you're right that file handles do not normally have mach ports on Darwin (which is surprising to me): a program which does nothing has 11 ports opened. modify that program to open a file and it still only has 11 ports opened. 🤷 1 comment
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@ariadne @marcan @nicolas17 there is a semi-public way to wrap an fd into a Mach port (fileport) that you can then send to another process via Mach IPC, and then unwrap to receive an fd in the new process (kind of like SCM_RIGHTS). But this is just that, an explicit wrapper.