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-rw-r--r--tools/module_manager.py50
1 files changed, 36 insertions, 14 deletions
diff --git a/tools/module_manager.py b/tools/module_manager.py
index 2eb4c63d..911f7252 100644
--- a/tools/module_manager.py
+++ b/tools/module_manager.py
@@ -31,30 +31,40 @@ class ModuleManager(object):
"""
self._modules = []
- def insert_module(self, module):
+ def insert_module(self, module, auto_remove=True):
"""Method inserts given module.
In case that module name ends with .ko suffix then insmod will
be used for its insertion. Otherwise modprobe will be called.
:param module: a name of kernel module
+ :param auto_remove: if True (by default), then module will be
+ automatically removed by remove_modules() method
"""
module_base_name = os.path.basename(os.path.splitext(module)[0])
if self.is_module_inserted(module):
self._logger.info('Module already loaded \'%s\'.', module_base_name)
# add it to internal list, so we can try to remove it at the end
- self._modules.append(module)
+ if auto_remove:
+ self._modules.append(module)
return
try:
if module.endswith('.ko'):
+ # load module dependecies first, but suppress automatic
+ # module removal at the end; Just for case, that module
+ # depends on generic module
+ for depmod in self.get_module_dependecies(module):
+ self.insert_module(depmod, auto_remove=False)
+
tasks.run_task(['sudo', 'insmod', module], self._logger,
'Insmod module \'%s\'...' % module_base_name, True)
else:
tasks.run_task(['sudo', 'modprobe', module], self._logger,
'Modprobe module \'%s\'...' % module_base_name, True)
- self._modules.append(module)
+ if auto_remove:
+ self._modules.append(module)
except subprocess.CalledProcessError:
# in case of error, show full module name
self._logger.error('Unable to insert module \'%s\'.', module)
@@ -68,17 +78,6 @@ class ModuleManager(object):
for module in modules:
self.insert_module(module)
- def insert_module_group(self, module_group, path_prefix):
- """Ensure all modules in a group are inserted into the system.
-
- :param module_group: A name of configuration item containing a list
- of module names
- :param path_prefix: A name of directory which contains given
- group of modules
- """
- for (path_suffix, module) in module_group:
- self.insert_module(os.path.join(path_prefix, path_suffix, '%s.ko' % module))
-
def remove_module(self, module):
"""Removes a single module.
@@ -143,3 +142,26 @@ class ModuleManager(object):
return line
return None
+
+ @staticmethod
+ def get_module_dependecies(module):
+ """Return list of modules, which must be loaded before module itself
+
+ :param module: a name of kernel module
+ :returns: In case that module has any dependencies, then list of module
+ names will be returned. Otherwise it returns empty list, i.e. [].
+ """
+ deps = ''
+ try:
+ # get list of module dependecies from kernel
+ deps = subprocess.check_output('modinfo -F depends {}'.format(module),
+ shell=True).decode().rstrip('\n')
+ except subprocess.CalledProcessError:
+ # in case of error, show full module name...
+ self._logger.info('Unable to get list of dependecies for module \'%s\'.', module)
+ # ...and try to continue, just for case that dependecies are already loaded
+
+ if len(deps):
+ return deps.split(',')
+ else:
+ return []