Function isClaudeProcess

source code/utils/nativeInstaller/pidLock.ts:103–134

* Validate that a running process is actually a Claude process * This helps mitigate PID reuse issues

(pid: number, expectedExecPath: string)

 * This helps mitigate PID reuse issues
 */
function isClaudeProcess(pid: number, expectedExecPath: string): boolean {
  if (!isProcessRunning(pid)) {
    return false
  }

  // If the PID matches our current process, we know it's valid
  // This handles test environments where the command might not contain 'claude'
  if (pid === process.pid) {
    return true
  }

  try {
    const command = getProcessCommand(pid)
    if (!command) {
      // If we can't get the command, trust the PID check
      // This is conservative - we'd rather not delete a running version
      return true
    }

    // Check if the command contains 'claude' or the expected exec path
    const normalizedCommand = command.toLowerCase()
    const normalizedExecPath = expectedExecPath.toLowerCase()

    return (
      normalizedCommand.includes('claude') ||
      normalizedCommand.includes(normalizedExecPath)
    )
  } catch {
    // If command check fails, trust the PID check
    return true
  }
}

/**
 * Read and parse a lock file's content