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# Unix SMB/CIFS implementation.
# List processes (to aid debugging on systems without setproctitle)
# Copyright (C) 2010-2011 Jelmer Vernooij <jelmer@samba.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Testbed for loadparm.c/params.c
#
# This module simply loads a specified configuration file and
# if successful, dumps it's contents to stdout. Note that the
# operation is performed with DEBUGLEVEL at 3.
#
# Useful for a quick 'syntax check' of a configuration file.
#
import samba
import samba.getopt as options
from samba.netcmd import Command, CommandError, Option
from samba.messaging import Messaging
class cmd_processes(Command):
"""List processes (to aid debugging on systems without setproctitle)."""
synopsis = "%prog [options]"
takes_optiongroups = {
"sambaopts": options.SambaOptions,
"versionopts": options.VersionOptions
}
takes_options = [
Option("--name", type=str,
help="Return only processes associated with one particular name"),
Option("--pid", type=int,
help="Return only names associated with one particular PID"),
]
takes_args = []
#
# Get details of the samba services currently registered in irpc
# The prefork process model registers names in the form:
# prefork-master-<service> and prefork-worker-<service>-<instance>
#
# To allow this routine to identify pre-fork master and worker process
#
# returns a tuple (filtered, masters, workers)
#
# filtered - is a list of services with the prefork-* removed
# masters - dictionary keyed on service name of prefork master processes
# workers - dictionary keyed on service name containing an ordered list
# of worker processes.
def get_service_data(self, msg_ctx):
services = msg_ctx.irpc_all_servers()
filtered = []
masters = {}
workers = {}
for service in services:
if service.name.startswith("prefork-master"):
ns = service.name.split("-")
name = ns[2] + "_server"
masters[name] = service.ids[0].pid
elif service.name.startswith("prefork-worker"):
ns = service.name.split("-")
name = ns[2] + "_server"
instance = int(ns[3])
pid = service.ids[0].pid
if name not in workers:
workers[name] = {}
workers[name][instance] = (instance, pid)
else:
filtered.append(service)
return (filtered, masters, workers)
def run(self, sambaopts, versionopts, section_name=None,
name=None, pid=None):
lp = sambaopts.get_loadparm()
logger = self.get_logger("processes")
msg_ctx = Messaging()
if name is not None:
try:
ids = msg_ctx.irpc_servers_byname(name)
except KeyError:
ids = []
for server_id in ids:
self.outf.write("%d\n" % server_id.pid)
elif pid is not None:
names = msg_ctx.irpc_all_servers()
for name in names:
for server_id in name.ids:
if server_id.pid == int(pid):
self.outf.write("%s\n" % name.name)
else:
seen = {} # Service entries already printed, service names can
# be registered multiple times against a process
# but we should only display them once.
prefork = {} # Services running in the prefork process model
# want to ensure that the master process and workers
# are grouped to together.
(services, masters, workers) = self.get_service_data(msg_ctx)
self.outf.write(" Service: PID\n")
self.outf.write("--------------------------------------\n")
for service in sorted(services, key=lambda x: x.name):
if service.name in masters:
# If this service is running in a pre-forked process we
# want to print the master process followed by all the
# worker processes
pid = masters[service.name]
if pid not in prefork:
prefork[pid] = True
self.outf.write("%-26s %6d\n" %
(service.name, pid))
if service.name in workers:
ws = workers[service.name]
for w in ws:
(instance, pid) = ws[w]
sn = "{0}(worker {1})".format(
service.name, instance)
self.outf.write("%-26s %6d\n" % (sn, pid))
else:
for server_id in service.ids:
if (service.name, server_id.pid) not in seen:
self.outf.write("%-26s %6d\n"
% (service.name, server_id.pid))
seen[(service.name, server_id.pid)] = True
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