This file is indexed.

/usr/share/ofono/scripts/set-sms-bearer is in ofono-scripts 1.21-1ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/usr/bin/python3
import sys
import dbus

if len(sys.argv) < 2:
        print("Usage: %s <bearer> Bearer types: <cs-only> <ps-only> <cs-preferred> <ps-preferred>" %\
                                        (sys.argv[0]))
        sys.exit(1)

def message_bearer(sms, value):
	try:
            sms.SetProperty("Bearer", dbus.String(value))
	except dbus.DBusException as e:
            print("Unable to set Bearer[%s] - FAIL" % (value))
            exit(1)

bus = dbus.SystemBus()
manager = dbus.Interface(bus.get_object('org.ofono', '/'),'org.ofono.Manager')
modems = manager.GetModems()
value  = sys.argv[1]

for path, properties in modems:
	print("Setting bearer for [ %s ]" % (path))

	if "org.ofono.MessageManager" not in properties["Interfaces"]:
		continue

        sms = dbus.Interface(bus.get_object('org.ofono', path), 'org.ofono.MessageManager')

        message_bearer(sms, value)
        print("SMS Bearer updated for [ %s ]" % (path))