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cairn-internandcairn-intern
1aacf38b72
* fix(background): treat POSIX zombie leader as already-exited terminateOwnedProcess always returned leaderAlreadyExited=false, so TerminateCommand surfaced "did not exit after SIGKILL" when ps was unavailable and the leader was already a waitable zombie. Probe the leader the way Windows uses GetExitCodeProcess, then still signal the group so live descendants are not skipped. * fix(background): preserve live-group termination failures --------- Co-authored-by: cairn-intern <[email protected]>
29 lines
940 B
Go
29 lines
940 B
Go
//go:build darwin
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package background
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import "golang.org/x/sys/unix"
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// szomb is sys/proc.h SZOMB: the process has exited and is waiting to be reaped.
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const szomb int8 = 5
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// leaderWaitableExited reports whether pid has already exited and is waiting
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// to be reaped. This is the POSIX analogue of Windows GetExitCodeProcess
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// returning a value other than STILL_ACTIVE: the leader is a zombie, waitable
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// as exited, without collecting it. A true result does not mean the process
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// group is empty — descendants may still be running.
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//
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// Darwin has no /proc and x/sys/unix does not wrap waitid here, so the probe
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// is kern.proc.pid via sysctl. It does not use ps, which is the #862 failure
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// mode when PATH cannot resolve ps.
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func leaderWaitableExited(pid int) bool {
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if pid <= 1 {
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return false
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}
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kinfo, err := unix.SysctlKinfoProc("kern.proc.pid", pid)
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if err != nil {
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return false
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}
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return kinfo.Proc.P_stat == szomb
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}
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