You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
5 months ago
|
"Module dependency utility functions for Mininet."
|
||
|
|
|
||
|
|
from os import environ
|
||
|
|
from sys import exit # pylint: disable=redefined-builtin
|
||
|
|
|
||
|
|
from mininet.util import quietRun, BaseString
|
||
|
|
from mininet.log import info, error, debug
|
||
|
|
|
||
|
|
|
||
|
|
def lsmod():
|
||
|
|
"Return output of lsmod."
|
||
|
|
return quietRun( 'lsmod' )
|
||
|
|
|
||
|
|
def rmmod( mod ):
|
||
|
|
"""Return output of lsmod.
|
||
|
|
mod: module string"""
|
||
|
|
return quietRun( [ 'rmmod', mod ] )
|
||
|
|
|
||
|
|
def modprobe( mod ):
|
||
|
|
"""Return output of modprobe
|
||
|
|
mod: module string"""
|
||
|
|
return quietRun( [ 'modprobe', mod ] )
|
||
|
|
|
||
|
|
|
||
|
|
OF_KMOD = 'ofdatapath'
|
||
|
|
OVS_KMOD = 'openvswitch_mod' # Renamed 'openvswitch' in OVS 1.7+/Linux 3.5+
|
||
|
|
TUN = 'tun'
|
||
|
|
|
||
|
|
def moduleDeps( subtract=None, add=None ):
|
||
|
|
"""Handle module dependencies.
|
||
|
|
subtract: string or list of module names to remove, if already loaded
|
||
|
|
add: string or list of module names to add, if not already loaded"""
|
||
|
|
subtract = subtract if subtract is not None else []
|
||
|
|
add = add if add is not None else []
|
||
|
|
if isinstance( subtract, BaseString ):
|
||
|
|
subtract = [ subtract ]
|
||
|
|
if isinstance( add, BaseString ):
|
||
|
|
add = [ add ]
|
||
|
|
for mod in subtract:
|
||
|
|
if mod in lsmod():
|
||
|
|
info( '*** Removing ' + mod + '\n' )
|
||
|
|
rmmodOutput = rmmod( mod )
|
||
|
|
if rmmodOutput:
|
||
|
|
error( 'Error removing ' + mod + ': "%s">\n' % rmmodOutput )
|
||
|
|
exit( 1 )
|
||
|
|
if mod in lsmod():
|
||
|
|
error( 'Failed to remove ' + mod + '; still there!\n' )
|
||
|
|
exit( 1 )
|
||
|
|
for mod in add:
|
||
|
|
if mod not in lsmod():
|
||
|
|
info( '*** Loading ' + mod + '\n' )
|
||
|
|
modprobeOutput = modprobe( mod )
|
||
|
|
if modprobeOutput:
|
||
|
|
error( 'Error inserting ' + mod +
|
||
|
|
' - is it installed and available via modprobe?\n' +
|
||
|
|
'Error was: "%s"\n' % modprobeOutput )
|
||
|
|
if mod not in lsmod():
|
||
|
|
error( 'Failed to insert ' + mod + ' - quitting.\n' )
|
||
|
|
exit( 1 )
|
||
|
|
else:
|
||
|
|
debug( '*** ' + mod + ' already loaded\n' )
|
||
|
|
|
||
|
|
|
||
|
|
def pathCheck( *args, **kwargs ):
|
||
|
|
"Make sure each program in *args can be found in $PATH."
|
||
|
|
moduleName = kwargs.get( 'moduleName', 'it' )
|
||
|
|
for arg in args:
|
||
|
|
if not quietRun( 'which ' + arg ):
|
||
|
|
error( 'Cannot find required executable %s.\n' % arg +
|
||
|
|
'Please make sure that %s is installed ' % moduleName +
|
||
|
|
'and available in your $PATH:\n(%s)\n' % environ[ 'PATH' ] )
|
||
|
|
exit( 1 )
|