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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# This file is part of cloud-init. See LICENSE file for license information. import os from collections import namedtuple from typing import Optional from cloudinit import log as logging from cloudinit import subp from cloudinit.util import is_container, is_FreeBSD LOG = logging.getLogger(__name__) # Path for DMI Data DMI_SYS_PATH = "/sys/class/dmi/id" KernelNames = namedtuple("KernelNames", ["linux", "freebsd"]) KernelNames.__new__.__defaults__ = (None, None) # FreeBSD's kenv(1) and Linux /sys/class/dmi/id/* both use different names from # dmidecode. The values are the same, and ultimately what we're interested in. # These tools offer a "cheaper" way to access those values over dmidecode. # This is our canonical translation table. If we add more tools on other # platforms to find dmidecode's values, their keys need to be put in here. DMIDECODE_TO_KERNEL = { "baseboard-asset-tag": KernelNames("board_asset_tag", "smbios.planar.tag"), "baseboard-manufacturer": KernelNames( "board_vendor", "smbios.planar.maker" ), "baseboard-product-name": KernelNames( "board_name", "smbios.planar.product" ), "baseboard-serial-number": KernelNames( "board_serial", "smbios.planar.serial" ), "baseboard-version": KernelNames("board_version", "smbios.planar.version"), "bios-release-date": KernelNames("bios_date", "smbios.bios.reldate"), "bios-vendor": KernelNames("bios_vendor", "smbios.bios.vendor"), "bios-version": KernelNames("bios_version", "smbios.bios.version"), "chassis-asset-tag": KernelNames( "chassis_asset_tag", "smbios.chassis.tag" ), "chassis-manufacturer": KernelNames( "chassis_vendor", "smbios.chassis.maker" ), "chassis-serial-number": KernelNames( "chassis_serial", "smbios.chassis.serial" ), "chassis-version": KernelNames( "chassis_version", "smbios.chassis.version" ), "system-manufacturer": KernelNames("sys_vendor", "smbios.system.maker"), "system-product-name": KernelNames( "product_name", "smbios.system.product" ), "system-serial-number": KernelNames( "product_serial", "smbios.system.serial" ), "system-uuid": KernelNames("product_uuid", "smbios.system.uuid"), "system-version": KernelNames("product_version", "smbios.system.version"), } def _read_dmi_syspath(key: str) -> Optional[str]: """ Reads dmi data from /sys/class/dmi/id """ kmap = DMIDECODE_TO_KERNEL.get(key) if kmap is None or kmap.linux is None: return None dmi_key_path = "{0}/{1}".format(DMI_SYS_PATH, kmap.linux) LOG.debug("querying dmi data %s", dmi_key_path) if not os.path.exists(dmi_key_path): LOG.debug("did not find %s", dmi_key_path) return None try: with open(dmi_key_path, "rb") as fp: key_data = fp.read() except PermissionError: LOG.debug("Could not read %s", dmi_key_path) return None # uninitialized dmi values show as all \xff and /sys appends a '\n'. # in that event, return empty string. if key_data == b"\xff" * (len(key_data) - 1) + b"\n": key_data = b"" try: return key_data.decode("utf8").strip() except UnicodeDecodeError as e: LOG.error( "utf-8 decode of content (%s) in %s failed: %s", dmi_key_path, key_data, e, ) return None def _read_kenv(key: str) -> Optional[str]: """ Reads dmi data from FreeBSD's kenv(1) """ kmap = DMIDECODE_TO_KERNEL.get(key) if kmap is None or kmap.freebsd is None: return None LOG.debug("querying dmi data %s", kmap.freebsd) try: cmd = ["kenv", "-q", kmap.freebsd] (result, _err) = subp.subp(cmd) result = result.strip() LOG.debug("kenv returned '%s' for '%s'", result, kmap.freebsd) return result except subp.ProcessExecutionError as e: LOG.debug("failed kenv cmd: %s\n%s", cmd, e) return None def _call_dmidecode(key: str, dmidecode_path: str) -> Optional[str]: """ Calls out to dmidecode to get the data out. This is mostly for supporting OS's without /sys/class/dmi/id support. """ try: cmd = [dmidecode_path, "--string", key] (result, _err) = subp.subp(cmd) result = result.strip() LOG.debug("dmidecode returned '%s' for '%s'", result, key) if result.replace(".", "") == "": return "" return result except subp.ProcessExecutionError as e: LOG.debug("failed dmidecode cmd: %s\n%s", cmd, e) return None def read_dmi_data(key: str) -> Optional[str]: """ Wrapper for reading DMI data. If running in a container return None. This is because DMI data is assumed to be not useful in a container as it does not represent the container but rather the host. This will do the following (returning the first that produces a result): 1) Use a mapping to translate `key` from dmidecode naming to sysfs naming and look in /sys/class/dmi/... for a value. 2) Use `key` as a sysfs key directly and look in /sys/class/dmi/... 3) Fall-back to passing `key` to `dmidecode --string`. If all of the above fail to find a value, None will be returned. """ if is_container(): return None if is_FreeBSD(): return _read_kenv(key) syspath_value = _read_dmi_syspath(key) if syspath_value is not None: return syspath_value def is_x86(arch): return arch == "x86_64" or (arch[0] == "i" and arch[2:] == "86") # running dmidecode can be problematic on some arches (LP: #1243287) uname_arch = os.uname()[4] if not (is_x86(uname_arch) or uname_arch in ("aarch64", "amd64")): LOG.debug("dmidata is not supported on %s", uname_arch) return None dmidecode_path = subp.which("dmidecode") if dmidecode_path: return _call_dmidecode(key, dmidecode_path) LOG.debug("did not find either path %s or dmidecode command", DMI_SYS_PATH) return None # vi: ts=4 expandtab