#!/usr/bin/env python # Copyright (c) 2017 Intel Corporation # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. DOCUMENTATION = ''' --- module: find_kernel short_description: Look for the system kernel on the filesystem description: - We need to find the kernel on non-booted systems, disk images, chroots, etc. To do this we check /lib/modules and look for the kernel that matches the running kernle, or failing that we look for the highest-numbered kernel options: kernel: starting kernel to check module_dir: Override kernel module dir, default /lib/modules ''' LIB_MODULES = "/lib/modules" def try_int(s, *args): """Convert to integer if possible.""" try: return int(s) except (TypeError, ValueError): return args[0] if args else s def convert_ints(fields, orig): return tuple((try_int(f) for f in fields)), orig def main(): module = AnsibleModule( argument_spec={ 'kernel': {'required': True, 'type': 'str'}, 'module_dir': {'required': False, 'type': 'str', 'default': LIB_MODULES}, } ) params = module.params kernel = params['kernel'] module_dir = params['module_dir'] if os.path.isdir(os.path.join(module_dir, kernel)): module.exit_json(changed=False, kernel=kernel) kernel_dirs = os.listdir(module_dir) kernels = sorted((convert_ints(re.split('[-.]', k), k) for k in kernel_dirs), reverse=True) try: newest_kernel = kernels[0][-1] except IndexError: module.fail_json(msg="Unable to find kernels in {}".format(module_dir)) if os.path.isdir(os.path.join(module_dir, newest_kernel)): module.exit_json(changed=False, kernel=newest_kernel) else: return kernel module.fail_json(msg="Unable to kernel other than {}".format(kernel)) # <<INCLUDE_ANSIBLE_MODULE_COMMON>> from ansible.module_utils.basic import * # noqa if __name__ == '__main__': main() """ get kernel from uname, ansible_kernel look for that kernel in /lib/modules if that kernel doens't exist sort lib/modules use latest parse grub """