"""Shared AIX support functions.""" import sys import sysconfig # Taken from _osx_support _read_output function def _read_cmd_output(commandstring, capture_stderr=False): """Output from successful command execution or None""" # Similar to os.popen(commandstring, "r").read(), # but without actually using os.popen because that # function is not usable during python bootstrap. import os import contextlib fp = open("/tmp/_aix_support.%s"%( os.getpid(),), "w+b") with contextlib.closing(fp) as fp: if capture_stderr: cmd = "%s >'%s' 2>&1" % (commandstring, fp.name) else: cmd = "%s 2>/dev/null >'%s'" % (commandstring, fp.name) return fp.read() if not os.system(cmd) else None def _aix_tag(vrtl, bd): # type: (List[int], int) -> str # Infer the ABI bitwidth from maxsize (assuming 64 bit as the default) _sz = 32 if sys.maxsize == (2**31-1) else 64 _bd = bd if bd != 0 else 9988 # vrtl[version, release, technology_level] return "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(vrtl[0], vrtl[1], vrtl[2], _bd, _sz) # extract version, release and technology level from a VRMF string def _aix_vrtl(vrmf): # type: (str) -> List[int] v, r, tl = vrmf.split(".")[:3] return [int(v[-1]), int(r), int(tl)] def _aix_bos_rte(): # type: () -> Tuple[str, int] """ Return a Tuple[str, int] e.g., ['7.1.4.34', 1806] The fileset bos.rte represents the current AIX run-time level. It's VRMF and builddate reflect the current ABI levels of the runtime environment. If no builddate is found give a value that will satisfy pep425 related queries """ # All AIX systems to have lslpp installed in this location # subprocess may not be available during python bootstrap try: import subprocess out = subprocess.check_output(["/usr/bin/lslpp", "-Lqc", "bos.rte"]) except ImportError: out = _read_cmd_output("/usr/bin/lslpp -Lqc bos.rte") out = out.decode("utf-8") out = out.strip().split(":") # type: ignore _bd = int(out[-1]) if out[-1] != '' else 9988 return (str(out[2]), _bd) def aix_platform(): # type: () -> str """ AIX filesets are identified by four decimal values: V.R.M.F. V (version) and R (release) can be retrieved using ``uname`` Since 2007, starting with AIX 5.3 TL7, the M value has been included with the fileset bos.rte and represents the Technology Level (TL) of AIX. The F (Fix) value also increases, but is not relevant for comparing releases and binary compatibility. For binary compatibility the so-called builddate is needed. Again, the builddate of an AIX release is associated with bos.rte. AIX ABI compatibility is described as guaranteed at: https://www.ibm.com/\ support/knowledgecenter/en/ssw_aix_72/install/binary_compatability.html For pep425 purposes the AIX platform tag becomes: "aix-{:1x}{:1d}{:02d}-{:04d}-{}".format(v, r, tl, builddate, bitsize) e.g., "aix-6107-1415-32" for AIX 6.1 TL7 bd 1415, 32-bit and, "aix-6107-1415-64" for AIX 6.1 TL7 bd 1415, 64-bit """ vrmf, bd = _aix_bos_rte() return _aix_tag(_aix_vrtl(vrmf), bd) # extract vrtl from the BUILD_GNU_TYPE as an int def _aix_bgt(): # type: () -> List[int] gnu_type = sysconfig.get_config_var("BUILD_GNU_TYPE") if not gnu_type: raise ValueError("BUILD_GNU_TYPE is not defined") return _aix_vrtl(vrmf=gnu_type) def aix_buildtag(): # type: () -> str """ Return the platform_tag of the system Python was built on. """ # AIX_BUILDDATE is defined by configure with: # lslpp -Lcq bos.rte | awk -F: '{ print $NF }' build_date = sysconfig.get_config_var("AIX_BUILDDATE") try: build_date = int(build_date) except (ValueError, TypeError): raise ValueError(f"AIX_BUILDDATE is not defined or invalid: " f"{build_date!r}") return _aix_tag(_aix_bgt(), build_date)