device.py 文件源码

def execute(self, name, options, parameters):
        try:
            self._cmdLock.acquire()
            self._log.debug("execute(%s, %s, %s)", name, options, parameters)
            if not name.startswith("/"):
                raise CF.InvalidFileName(CF.CF_EINVAL, "Filename must be absolute")

            if self.isLocked(): raise CF.Device.InvalidState("System is locked down")
            if self.isDisabled(): raise CF.Device.InvalidState("System is disabled")

            priority = 0
            stack_size = 4096
            invalidOptions = []
            for option in options:
                val = option.value.value()
                if option.id == CF.ExecutableDevice.PRIORITY_ID:
                    if ((not isinstance(val, int)) and (not isinstance(val, long))):
                        invalidOptions.append(option)
                    else:
                        priority = val
                elif option.id == CF.ExecutableDevice.STACK_SIZE_ID:
                    if ((not isinstance(val, int)) and (not isinstance(val, long))):
                        invalidOptions.append(option)
                    else:
                        stack_size = val
            if len(invalidOptions) > 0:
                self._log.error("execute() received invalid options %s", invalidOptions)
                raise CF.ExecutableDevice.InvalidOptions(invalidOptions)

            command = name[1:] # This is relative to our CWD
            self._log.debug("Running %s %s", command, os.getcwd())

            if not os.path.isfile(command):
                raise CF.InvalidFileName(CF.CF_EINVAL, "File could not be found %s" % command)
            os.chmod(command, os.stat(command)[0] | stat.S_IEXEC | stat.S_IREAD | stat.S_IWRITE)
        finally:
            self._cmdLock.release()

        return self._execute(command, options, parameters)