1# 2# Copyright OpenEmbedded Contributors 3# 4# SPDX-License-Identifier: GPL-2.0-only 5# 6 7def get_os_release(): 8 """Get all key-value pairs from /etc/os-release as a dict""" 9 from collections import OrderedDict 10 11 data = OrderedDict() 12 if os.path.exists('/etc/os-release'): 13 with open('/etc/os-release') as f: 14 for line in f: 15 try: 16 key, val = line.rstrip().split('=', 1) 17 except ValueError: 18 continue 19 data[key.strip()] = val.strip('"') 20 return data 21 22def release_dict_osr(): 23 """ Populate a dict with pertinent values from /etc/os-release """ 24 data = {} 25 os_release = get_os_release() 26 if 'ID' in os_release: 27 data['DISTRIB_ID'] = os_release['ID'] 28 if 'VERSION_ID' in os_release: 29 data['DISTRIB_RELEASE'] = os_release['VERSION_ID'] 30 31 return data 32 33def release_dict_lsb(): 34 """ Return the output of lsb_release -ir as a dictionary """ 35 from subprocess import PIPE 36 37 try: 38 output, err = bb.process.run(['lsb_release', '-ir'], stderr=PIPE) 39 except bb.process.CmdError as exc: 40 return {} 41 42 lsb_map = { 'Distributor ID': 'DISTRIB_ID', 43 'Release': 'DISTRIB_RELEASE'} 44 lsb_keys = lsb_map.keys() 45 46 data = {} 47 for line in output.splitlines(): 48 if line.startswith("-e"): 49 line = line[3:] 50 try: 51 key, value = line.split(":\t", 1) 52 except ValueError: 53 continue 54 if key in lsb_keys: 55 data[lsb_map[key]] = value 56 57 if len(data.keys()) != 2: 58 return None 59 60 return data 61 62def release_dict_file(): 63 """ Try to gather release information manually when other methods fail """ 64 data = {} 65 try: 66 if os.path.exists('/etc/lsb-release'): 67 data = {} 68 with open('/etc/lsb-release') as f: 69 for line in f: 70 key, value = line.split("=", 1) 71 data[key] = value.strip() 72 elif os.path.exists('/etc/redhat-release'): 73 data = {} 74 with open('/etc/redhat-release') as f: 75 distro = f.readline().strip() 76 import re 77 match = re.match(r'(.*) release (.*) \((.*)\)', distro) 78 if match: 79 data['DISTRIB_ID'] = match.group(1) 80 data['DISTRIB_RELEASE'] = match.group(2) 81 elif os.path.exists('/etc/SuSE-release'): 82 data = {} 83 data['DISTRIB_ID'] = 'SUSE LINUX' 84 with open('/etc/SuSE-release') as f: 85 for line in f: 86 if line.startswith('VERSION = '): 87 data['DISTRIB_RELEASE'] = line[10:].rstrip() 88 break 89 90 except IOError: 91 return {} 92 return data 93 94def distro_identifier(adjust_hook=None): 95 """Return a distro identifier string based upon lsb_release -ri, 96 with optional adjustment via a hook""" 97 98 import re 99 100 # Try /etc/os-release first, then the output of `lsb_release -ir` and 101 # finally fall back on parsing various release files in order to determine 102 # host distro name and version. 103 distro_data = release_dict_osr() 104 if not distro_data: 105 distro_data = release_dict_lsb() 106 if not distro_data: 107 distro_data = release_dict_file() 108 109 distro_id = distro_data.get('DISTRIB_ID', '') 110 release = distro_data.get('DISTRIB_RELEASE', '') 111 112 if adjust_hook: 113 distro_id, release = adjust_hook(distro_id, release) 114 if not distro_id: 115 return "unknown" 116 # Filter out any non-alphanumerics and convert to lowercase 117 distro_id = re.sub(r'\W', '', distro_id).lower() 118 119 if release: 120 id_str = '{0}-{1}'.format(distro_id, release) 121 else: 122 id_str = distro_id 123 return id_str.replace(' ','-').replace('/','-') 124