Repository navigation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
"Module dependency utility functions for Mininet."
from mininet.util import quietRun
from mininet.log import info, error, debug
from os import environ
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 )