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_pssunos.py
# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved. # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. """Sun OS Solaris platform implementation.""" import errno import functools import os import socket import subprocess import sys from collections import namedtuple from socket import AF_INET from . import _common from . import _psposix from . import _psutil_posix as cext_posix from . import _psutil_sunos as cext from ._common import AF_INET6 from ._common import AccessDenied from ._common import NoSuchProcess from ._common import ZombieProcess from ._common import debug from ._common import get_procfs_path from ._common import isfile_strict from ._common import memoize_when_activated from ._common import sockfam_to_enum from ._common import socktype_to_enum from ._common import usage_percent from ._compat import PY3 from ._compat import FileNotFoundError from ._compat import PermissionError from ._compat import ProcessLookupError from ._compat import b __extra__all__ = ["CONN_IDLE", "CONN_BOUND", "PROCFS_PATH"] # ===================================================================== # --- globals # ===================================================================== PAGE_SIZE = cext_posix.getpagesize() AF_LINK = cext_posix.AF_LINK IS_64_BIT = sys.maxsize > 2**32 CONN_IDLE = "IDLE" CONN_BOUND = "BOUND" PROC_STATUSES = { cext.SSLEEP: _common.STATUS_SLEEPING, cext.SRUN: _common.STATUS_RUNNING, cext.SZOMB: _common.STATUS_ZOMBIE, cext.SSTOP: _common.STATUS_STOPPED, cext.SIDL: _common.STATUS_IDLE, cext.SONPROC: _common.STATUS_RUNNING, # same as run cext.SWAIT: _common.STATUS_WAITING, } TCP_STATUSES = { cext.TCPS_ESTABLISHED: _common.CONN_ESTABLISHED, cext.TCPS_SYN_SENT: _common.CONN_SYN_SENT, cext.TCPS_SYN_RCVD: _common.CONN_SYN_RECV, cext.TCPS_FIN_WAIT_1: _common.CONN_FIN_WAIT1, cext.TCPS_FIN_WAIT_2: _common.CONN_FIN_WAIT2, cext.TCPS_TIME_WAIT: _common.CONN_TIME_WAIT, cext.TCPS_CLOSED: _common.CONN_CLOSE, cext.TCPS_CLOSE_WAIT: _common.CONN_CLOSE_WAIT, cext.TCPS_LAST_ACK: _common.CONN_LAST_ACK, cext.TCPS_LISTEN: _common.CONN_LISTEN, cext.TCPS_CLOSING: _common.CONN_CLOSING, cext.PSUTIL_CONN_NONE: _common.CONN_NONE, cext.TCPS_IDLE: CONN_IDLE, # sunos specific cext.TCPS_BOUND: CONN_BOUND, # sunos specific } proc_info_map = dict( ppid=0, rss=1, vms=2, create_time=3, nice=4, num_threads=5, status=6, ttynr=7, uid=8, euid=9, gid=10, egid=11) # ===================================================================== # --- named tuples # ===================================================================== # psutil.cpu_times() scputimes = namedtuple('scputimes', ['user', 'system', 'idle', 'iowait']) # psutil.cpu_times(percpu=True) pcputimes = namedtuple('pcputimes', ['user', 'system', 'children_user', 'children_system']) # psutil.virtual_memory() svmem = namedtuple('svmem', ['total', 'available', 'percent', 'used', 'free']) # psutil.Process.memory_info() pmem = namedtuple('pmem', ['rss', 'vms']) pfullmem = pmem # psutil.Process.memory_maps(grouped=True) pmmap_grouped = namedtuple('pmmap_grouped', ['path', 'rss', 'anonymous', 'locked']) # psutil.Process.memory_maps(grouped=False) pmmap_ext = namedtuple( 'pmmap_ext', 'addr perms ' + ' '.join(pmmap_grouped._fields)) # ===================================================================== # --- memory # ===================================================================== def virtual_memory(): """Report virtual memory metrics.""" # we could have done this with kstat, but IMHO this is good enough total = os.sysconf('SC_PHYS_PAGES') * PAGE_SIZE # note: there's no difference on Solaris free = avail = os.sysconf('SC_AVPHYS_PAGES') * PAGE_SIZE used = total - free percent = usage_percent(used, total, round_=1) return svmem(total, avail, percent, used, free) def swap_memory(): """Report swap memory metrics.""" sin, sout = cext.swap_mem() # XXX # we are supposed to get total/free by doing so: # http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/ # usr/src/cmd/swap/swap.c # ...nevertheless I can't manage to obtain the same numbers as 'swap' # cmdline utility, so let's parse its output (sigh!) p = subprocess.Popen(['/usr/bin/env', 'PATH=/usr/sbin:/sbin:%s' % os.environ['PATH'], 'swap', '-l'], stdout=subprocess.PIPE) stdout, _ = p.communicate() if PY3: stdout = stdout.decode(sys.stdout.encoding) if p.returncode != 0: raise RuntimeError("'swap -l' failed (retcode=%s)" % p.returncode) lines = stdout.strip().split('\n')[1:] if not lines: raise RuntimeError('no swap device(s) configured') total = free = 0 for line in lines: line = line.split() t, f = line[3:5] total += int(int(t) * 512) free += int(int(f) * 512) used = total - free percent = usage_percent(used, total, round_=1) return _common.sswap(total, used, free, percent, sin * PAGE_SIZE, sout * PAGE_SIZE) # ===================================================================== # --- CPU # ===================================================================== def cpu_times(): """Return system-wide CPU times as a named tuple""" ret = cext.per_cpu_times() return scputimes(*[sum(x) for x in zip(*ret)]) def per_cpu_times(): """Return system per-CPU times as a list of named tuples""" ret = cext.per_cpu_times() return [scputimes(*x) for x in ret] def cpu_count_logical(): """Return the number of logical CPUs in the system.""" try: return os.sysconf("SC_NPROCESSORS_ONLN") except ValueError: # mimic os.cpu_count() behavior return None def cpu_count_cores(): """Return the number of CPU cores in the system.""" return cext.cpu_count_cores() def cpu_stats(): """Return various CPU stats as a named tuple.""" ctx_switches, interrupts, syscalls, traps = cext.cpu_stats() soft_interrupts = 0 return _common.scpustats(ctx_switches, interrupts, soft_interrupts, syscalls) # ===================================================================== # --- disks # ===================================================================== disk_io_counters = cext.disk_io_counters disk_usage = _psposix.disk_usage def disk_partitions(all=False): """Return system disk partitions.""" # TODO - the filtering logic should be better checked so that # it tries to reflect 'df' as much as possible retlist = [] partitions = cext.disk_partitions() for partition in partitions: device, mountpoint, fstype, opts = partition if device == 'none': device = '' if not all: # Differently from, say, Linux, we don't have a list of # common fs types so the best we can do, AFAIK, is to # filter by filesystem having a total size > 0. try: if not disk_usage(mountpoint).total: continue except OSError as err: # https://github.com/giampaolo/psutil/issues/1674 debug("skipping %r: %s" % (mountpoint, err)) continue maxfile = maxpath = None # set later ntuple = _common.sdiskpart(device, mountpoint, fstype, opts, maxfile, maxpath) retlist.append(ntuple) return retlist # ===================================================================== # --- network # ===================================================================== net_io_counters = cext.net_io_counters net_if_addrs = cext_posix.net_if_addrs def net_connections(kind, _pid=-1): """Return socket connections. If pid == -1 return system-wide connections (as opposed to connections opened by one process only). Only INET sockets are returned (UNIX are not). """ cmap = _common.conn_tmap.copy() if _pid == -1: cmap.pop('unix', 0) if kind not in cmap: raise ValueError("invalid %r kind argument; choose between %s" % (kind, ', '.join([repr(x) for x in cmap]))) families, types = _common.conn_tmap[kind] rawlist = cext.net_connections(_pid) ret = set() for item in rawlist: fd, fam, type_, laddr, raddr, status, pid = item if fam not in families: continue if type_ not in types: continue # TODO: refactor and use _common.conn_to_ntuple. if fam in (AF_INET, AF_INET6): if laddr: laddr = _common.addr(*laddr) if raddr: raddr = _common.addr(*raddr) status = TCP_STATUSES[status] fam = sockfam_to_enum(fam) type_ = socktype_to_enum(type_) if _pid == -1: nt = _common.sconn(fd, fam, type_, laddr, raddr, status, pid) else: nt = _common.pconn(fd, fam, type_, laddr, raddr, status) ret.add(nt) return list(ret) def net_if_stats(): """Get NIC stats (isup, duplex, speed, mtu).""" ret = cext.net_if_stats() for name, items in ret.items(): isup, duplex, speed, mtu = items if hasattr(_common, 'NicDuplex'): duplex = _common.NicDuplex(duplex) ret[name] = _common.snicstats(isup, duplex, speed, mtu, '') return ret # ===================================================================== # --- other system functions # ===================================================================== def boot_time(): """The system boot time expressed in seconds since the epoch.""" return cext.boot_time() def users(): """Return currently connected users as a list of namedtuples.""" retlist = [] rawlist = cext.users() localhost = (':0.0', ':0') for item in rawlist: user, tty, hostname, tstamp, user_process, pid = item # note: the underlying C function includes entries about # system boot, run level and others. We might want # to use them in the future. if not user_process: continue if hostname in localhost: hostname = 'localhost' nt = _common.suser(user, tty, hostname, tstamp, pid) retlist.append(nt) return retlist # ===================================================================== # --- processes # ===================================================================== def pids(): """Returns a list of PIDs currently running on the system.""" return [int(x) for x in os.listdir(b(get_procfs_path())) if x.isdigit()] def pid_exists(pid): """Check for the existence of a unix pid.""" return _psposix.pid_exists(pid) def wrap_exceptions(fun): """Call callable into a try/except clause and translate ENOENT, EACCES and EPERM in NoSuchProcess or AccessDenied exceptions. """ @functools.wraps(fun) def wrapper(self, *args, **kwargs): try: return fun(self, *args, **kwargs) except (FileNotFoundError, ProcessLookupError): # ENOENT (no such file or directory) gets raised on open(). # ESRCH (no such process) can get raised on read() if # process is gone in meantime. if not pid_exists(self.pid): raise NoSuchProcess(self.pid, self._name) else: raise ZombieProcess(self.pid, self._name, self._ppid) except PermissionError: raise AccessDenied(self.pid, self._name) except OSError: if self.pid == 0: if 0 in pids(): raise AccessDenied(self.pid, self._name) else: raise raise return wrapper class Process(object): """Wrapper class around underlying C implementation.""" __slots__ = ["pid", "_name", "_ppid", "_procfs_path", "_cache"] def __init__(self, pid): self.pid = pid self._name = None self._ppid = None self._procfs_path = get_procfs_path() def _assert_alive(self): """Raise NSP if the process disappeared on us.""" # For those C function who do not raise NSP, possibly returning # incorrect or incomplete result. os.stat('%s/%s' % (self._procfs_path, self.pid)) def oneshot_enter(self): self._proc_name_and_args.cache_activate(self) self._proc_basic_info.cache_activate(self) self._proc_cred.cache_activate(self) def oneshot_exit(self): self._proc_name_and_args.cache_deactivate(self) self._proc_basic_info.cache_deactivate(self) self._proc_cred.cache_deactivate(self) @wrap_exceptions @memoize_when_activated def _proc_name_and_args(self): return cext.proc_name_and_args(self.pid, self._procfs_path) @wrap_exceptions @memoize_when_activated def _proc_basic_info(self): if self.pid == 0 and not \ os.path.exists('%s/%s/psinfo' % (self._procfs_path, self.pid)): raise AccessDenied(self.pid) ret = cext.proc_basic_info(self.pid, self._procfs_path) assert len(ret) == len(proc_info_map) return ret @wrap_exceptions @memoize_when_activated def _proc_cred(self): return cext.proc_cred(self.pid, self._procfs_path) @wrap_exceptions def name(self): # note: max len == 15 return self._proc_name_and_args()[0] @wrap_exceptions def exe(self): try: return os.readlink( "%s/%s/path/a.out" % (self._procfs_path, self.pid)) except OSError: pass # continue and guess the exe name from the cmdline # Will be guessed later from cmdline but we want to explicitly # invoke cmdline here in order to get an AccessDenied # exception if the user has not enough privileges. self.cmdline() return "" @wrap_exceptions def cmdline(self): return self._proc_name_and_args()[1].split(' ') @wrap_exceptions def environ(self): return cext.proc_environ(self.pid, self._procfs_path) @wrap_exceptions def create_time(self): return self._proc_basic_info()[proc_info_map['create_time']] @wrap_exceptions def num_threads(self): return self._proc_basic_info()[proc_info_map['num_threads']] @wrap_exceptions def nice_get(self): # Note #1: getpriority(3) doesn't work for realtime processes. # Psinfo is what ps uses, see: # https://github.com/giampaolo/psutil/issues/1194 return self._proc_basic_info()[proc_info_map['nice']] @wrap_exceptions def nice_set(self, value): if self.pid in (2, 3): # Special case PIDs: internally setpriority(3) return ESRCH # (no such process), no matter what. # The process actually exists though, as it has a name, # creation time, etc. raise AccessDenied(self.pid, self._name) return cext_posix.setpriority(self.pid, value) @wrap_exceptions def ppid(self): self._ppid = self._proc_basic_info()[proc_info_map['ppid']] return self._ppid @wrap_exceptions def uids(self): try: real, effective, saved, _, _, _ = self._proc_cred() except AccessDenied: real = self._proc_basic_info()[proc_info_map['uid']] effective = self._proc_basic_info()[proc_info_map['euid']] saved = None return _common.puids(real, effective, saved) @wrap_exceptions def gids(self): try: _, _, _, real, effective, saved = self._proc_cred() except AccessDenied: real = self._proc_basic_info()[proc_info_map['gid']] effective = self._proc_basic_info()[proc_info_map['egid']] saved = None return _common.puids(real, effective, saved) @wrap_exceptions def cpu_times(self): try: times = cext.proc_cpu_times(self.pid, self._procfs_path) except OSError as err: if err.errno == errno.EOVERFLOW and not IS_64_BIT: # We may get here if we attempt to query a 64bit process # with a 32bit python. # Error originates from read() and also tools like "cat" # fail in the same way (!). # Since there simply is no way to determine CPU times we # return 0.0 as a fallback. See: # https://github.com/giampaolo/psutil/issues/857 times = (0.0, 0.0, 0.0, 0.0) else: raise return _common.pcputimes(*times) @wrap_exceptions def cpu_num(self): return cext.proc_cpu_num(self.pid, self._procfs_path) @wrap_exceptions def terminal(self): procfs_path = self._procfs_path hit_enoent = False tty = wrap_exceptions( self._proc_basic_info()[proc_info_map['ttynr']]) if tty != cext.PRNODEV: for x in (0, 1, 2, 255): try: return os.readlink( '%s/%d/path/%d' % (procfs_path, self.pid, x)) except FileNotFoundError: hit_enoent = True continue if hit_enoent: self._assert_alive() @wrap_exceptions def cwd(self): # /proc/PID/path/cwd may not be resolved by readlink() even if # it exists (ls shows it). If that's the case and the process # is still alive return None (we can return None also on BSD). # Reference: http://goo.gl/55XgO procfs_path = self._procfs_path try: return os.readlink("%s/%s/path/cwd" % (procfs_path, self.pid)) except FileNotFoundError: os.stat("%s/%s" % (procfs_path, self.pid)) # raise NSP or AD return "" @wrap_exceptions def memory_info(self): ret = self._proc_basic_info() rss = ret[proc_info_map['rss']] * 1024 vms = ret[proc_info_map['vms']] * 1024 return pmem(rss, vms) memory_full_info = memory_info @wrap_exceptions def status(self): code = self._proc_basic_info()[proc_info_map['status']] # XXX is '?' legit? (we're not supposed to return it anyway) return PROC_STATUSES.get(code, '?') @wrap_exceptions def threads(self): procfs_path = self._procfs_path ret = [] tids = os.listdir('%s/%d/lwp' % (procfs_path, self.pid)) hit_enoent = False for tid in tids: tid = int(tid) try: utime, stime = cext.query_process_thread( self.pid, tid, procfs_path) except EnvironmentError as err: if err.errno == errno.EOVERFLOW and not IS_64_BIT: # We may get here if we attempt to query a 64bit process # with a 32bit python. # Error originates from read() and also tools like "cat" # fail in the same way (!). # Since there simply is no way to determine CPU times we # return 0.0 as a fallback. See: # https://github.com/giampaolo/psutil/issues/857 continue # ENOENT == thread gone in meantime if err.errno == errno.ENOENT: hit_enoent = True continue raise else: nt = _common.pthread(tid, utime, stime) ret.append(nt) if hit_enoent: self._assert_alive() return ret @wrap_exceptions def open_files(self): retlist = [] hit_enoent = False procfs_path = self._procfs_path pathdir = '%s/%d/path' % (procfs_path, self.pid) for fd in os.listdir('%s/%d/fd' % (procfs_path, self.pid)): path = os.path.join(pathdir, fd) if os.path.islink(path): try: file = os.readlink(path) except FileNotFoundError: hit_enoent = True continue else: if isfile_strict(file): retlist.append(_common.popenfile(file, int(fd))) if hit_enoent: self._assert_alive() return retlist def _get_unix_sockets(self, pid): """Get UNIX sockets used by process by parsing 'pfiles' output.""" # TODO: rewrite this in C (...but the damn netstat source code # does not include this part! Argh!!) cmd = "pfiles %s" % pid p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE) stdout, stderr = p.communicate() if PY3: stdout, stderr = [x.decode(sys.stdout.encoding) for x in (stdout, stderr)] if p.returncode != 0: if 'permission denied' in stderr.lower(): raise AccessDenied(self.pid, self._name) if 'no such process' in stderr.lower(): raise NoSuchProcess(self.pid, self._name) raise RuntimeError("%r command error\n%s" % (cmd, stderr)) lines = stdout.split('\n')[2:] for i, line in enumerate(lines): line = line.lstrip() if line.startswith('sockname: AF_UNIX'): path = line.split(' ', 2)[2] type = lines[i - 2].strip() if type == 'SOCK_STREAM': type = socket.SOCK_STREAM elif type == 'SOCK_DGRAM': type = socket.SOCK_DGRAM else: type = -1 yield (-1, socket.AF_UNIX, type, path, "", _common.CONN_NONE) @wrap_exceptions def connections(self, kind='inet'): ret = net_connections(kind, _pid=self.pid) # The underlying C implementation retrieves all OS connections # and filters them by PID. At this point we can't tell whether # an empty list means there were no connections for process or # process is no longer active so we force NSP in case the PID # is no longer there. if not ret: # will raise NSP if process is gone os.stat('%s/%s' % (self._procfs_path, self.pid)) # UNIX sockets if kind in ('all', 'unix'): ret.extend([_common.pconn(*conn) for conn in self._get_unix_sockets(self.pid)]) return ret nt_mmap_grouped = namedtuple('mmap', 'path rss anon locked') nt_mmap_ext = namedtuple('mmap', 'addr perms path rss anon locked') @wrap_exceptions def memory_maps(self): def toaddr(start, end): return '%s-%s' % (hex(start)[2:].strip('L'), hex(end)[2:].strip('L')) procfs_path = self._procfs_path retlist = [] try: rawlist = cext.proc_memory_maps(self.pid, procfs_path) except OSError as err: if err.errno == errno.EOVERFLOW and not IS_64_BIT: # We may get here if we attempt to query a 64bit process # with a 32bit python. # Error originates from read() and also tools like "cat" # fail in the same way (!). # Since there simply is no way to determine CPU times we # return 0.0 as a fallback. See: # https://github.com/giampaolo/psutil/issues/857 return [] else: raise hit_enoent = False for item in rawlist: addr, addrsize, perm, name, rss, anon, locked = item addr = toaddr(addr, addrsize) if not name.startswith('['): try: name = os.readlink( '%s/%s/path/%s' % (procfs_path, self.pid, name)) except OSError as err: if err.errno == errno.ENOENT: # sometimes the link may not be resolved by # readlink() even if it exists (ls shows it). # If that's the case we just return the # unresolved link path. # This seems an incosistency with /proc similar # to: http://goo.gl/55XgO name = '%s/%s/path/%s' % (procfs_path, self.pid, name) hit_enoent = True else: raise retlist.append((addr, perm, name, rss, anon, locked)) if hit_enoent: self._assert_alive() return retlist @wrap_exceptions def num_fds(self): return len(os.listdir("%s/%s/fd" % (self._procfs_path, self.pid))) @wrap_exceptions def num_ctx_switches(self): return _common.pctxsw( *cext.proc_num_ctx_switches(self.pid, self._procfs_path)) @wrap_exceptions def wait(self, timeout=None): return _psposix.wait_pid(self.pid, timeout, self._name)
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