Function getAncestorCommandsAsync

src/utils/genericProcessUtils.ts:115–156

(
  pid: string | number,
  maxDepth = 10,
)

 * @returns Array of command strings for the process chain
 */
export async function getAncestorCommandsAsync(
  pid: string | number,
  maxDepth = 10,
): Promise<string[]> {
  if (process.platform === 'win32') {
    // For Windows, use a PowerShell script that walks the process tree and collects commands
    const script = `
      $currentPid = ${String(pid)}
      $commands = @()
      for ($i = 0; $i -lt ${maxDepth}; $i++) {
        $proc = Get-CimInstance Win32_Process -Filter "ProcessId=$currentPid" -ErrorAction SilentlyContinue
        if (-not $proc) { break }
        if ($proc.CommandLine) { $commands += $proc.CommandLine }
        if (-not $proc.ParentProcessId -or $proc.ParentProcessId -eq 0) { break }
        $currentPid = $proc.ParentProcessId
      }
      $commands -join [char]0
    `.trim()

    const result = await execFileNoThrowWithCwd(
      'powershell.exe',
      ['-NoProfile', '-Command', script],
      { timeout: 3000 },
    )
    if (result.code !== 0 || !result.stdout?.trim()) {
      return []
    }
    return result.stdout.split('\0').filter(Boolean)
  }

  // For Unix, use a shell command that walks up the process tree and collects commands
  // Using null byte as separator to handle commands with newlines
  const script = `currentpid=${String(pid)}; for i in $(seq 1 ${maxDepth}); do cmd=$(ps -o command= -p $currentpid 2>/dev/null); if [ -n "$cmd" ]; then printf '%s\\0' "$cmd"; fi; ppid=$(ps -o ppid= -p $currentpid 2>/dev/null | tr -d ' '); if [ -z "$ppid" ] || [ "$ppid" = "0" ] || [ "$ppid" = "1" ]; then break; fi; currentpid=$ppid; done`

  const result = await execFileNoThrowWithCwd('sh', ['-c', script], {
    timeout: 3000,
  })
  if (result.code !== 0 || !result.stdout?.trim()) {
    return []
  }
  return result.stdout.split('\0').filter(Boolean)
}

/**
 * Gets the child process IDs for a given process