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#
# syslogd.py - a simple syslogd implementation and wrapper for launching it
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 1999-2001 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import sys, os
import string
from socket import *
from select import select
import logging
log = logging.getLogger("anaconda")
class Syslogd:
def goSyslog(self, output, sockName):
sock = socket(AF_UNIX, SOCK_STREAM)
try:
os.unlink(sockName)
except os.error:
pass
sock.bind(sockName)
acceptedFds = []
sock.listen(5)
while (1):
list = acceptedFds + [ sock ]
list = select(list, [], [])[0]
try:
list.remove(sock)
(fd, remoteAddr) = sock.accept()
acceptedFds.append(fd)
except ValueError:
pass
for fd in list:
msg = fd.recv(50)
msg = string.replace(msg, chr(0), "\n")
if (msg):
output.write(msg)
output.flush()
else:
acceptedFds.remove(fd)
fd.close()
def __init__(self, root = "", output = sys.stdout, socket = "/dev/log"):
output = output
filename = root + socket;
self.goSyslog(output, filename)
class InstSyslog:
def __init__ (self):
self.pid = -1;
def start (self, root, log):
self.pid = os.fork ()
if not self.pid:
# look on PYTHONPATH first, so we use updated anaconda
path = "/usr/bin/syslogd"
if os.environ.has_key('PYTHONPATH'):
for f in string.split(os.environ['PYTHONPATH'], ":"):
if os.access (f+"/syslogd", os.X_OK):
path = f+"/syslogd"
break
if os.path.exists(path):
os.execv (path, ("syslogd", root, log))
def stop(self):
if self.pid == -1:
raise RuntimeError, "syslogd not running"
try:
os.kill (self.pid, 15)
except OSError, (num, msg):
log.error("killing syslogd failed: %s %s" %(num, msg))
try:
os.waitpid (self.pid, 0)
except OSError, (num, msg):
log.error("exception from waitpid in syslogd::stop: %s %s" % (num, msg))
self.pid = -1
syslog = InstSyslog()
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