Mini Shell
# 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 AccessDenied
from ._common import AF_INET6
from ._common import debug
from ._common import get_procfs_path
from ._common import isfile_strict
from ._common import memoize_when_activated
from ._common import NoSuchProcess
from ._common import sockfam_to_enum
from ._common import socktype_to_enum
from ._common import usage_percent
from ._common import ZombieProcess
from ._compat import b
from ._compat import FileNotFoundError
from ._compat import PermissionError
from ._compat import ProcessLookupError
from ._compat import PY3
__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, stderr = 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[3:4]
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_physical():
"""Return the number of physical CPUs in the system."""
return cext.cpu_count_phys()
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: %r" % (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 None
@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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