jwhur a16dee6468 Preserve error from ManagedProcess (#555) ...

This PR changes `ManagedProcess` to throw its own error together with
`vexec` error.

apple/container#1250 reports intermittent failure of CI tests, where the
system logs report failing `agent.startProcess` due to the `"read ack
pipe"` from `vmexec`.

This `"read ack pipe"` is thrown when writing end of `ackPipe` is closed
([ExecCommand.swift#L88](https://github.com/apple/containerization/blob/main/vminitd/Sources/vmexec/ExecCommand.swift#L88))
as EOF is returned from reading `ackPipe`.

It again means `ManagedProcess` throws an error after forking the
`vmexec` process
([ManagedProcess.swift#L165](https://github.com/apple/containerization/blob/main/vminitd/Sources/vminitd/ManagedProcess.swift#L165)).

However, current `ManagedProcess` doesn't throw its error if `errorPipe`
has data, which, i.e., `"read ack pipe"`, is actually not the root cause
in this case
([ManagedProcess.swift#L244](https://github.com/apple/containerization/blob/main/vminitd/Sources/vminitd/ManagedProcess.swift#L244)).

2026-02-24 00:39:27 -08:00

..

Cgroup

Update license header on all files to include the current year (#470)

2026-01-05 13:08:48 -08:00

LCShim

Update license header on all files to include the current year (#470)

2026-01-05 13:08:48 -08:00

vmexec

vmexec: Pass through process env for ExecCommand (#550)

2026-02-22 17:09:05 -08:00

vminitd

Preserve error from ManagedProcess (#555)

2026-02-24 00:39:27 -08:00