Adding new stuff

vim-plugins/python-mode/pymode/libs/logilab/common/daemon.py

@@ -1,101 +0,0 @@
-# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
-# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
-#
-# This file is part of logilab-common.
-#
-# logilab-common is free software: you can redistribute it and/or modify it under
-# the terms of the GNU Lesser General Public License as published by the Free
-# Software Foundation, either version 2.1 of the License, or (at your option) any
-# later version.
-#
-# logilab-common 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 Lesser General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Lesser General Public License along
-# with logilab-common.  If not, see <http://www.gnu.org/licenses/>.
-"""A daemonize function (for Unices)"""
-
-__docformat__ = "restructuredtext en"
-
-import os
-import errno
-import signal
-import sys
-import time
-import warnings
-
-from six.moves import range
-
-def setugid(user):
-    """Change process user and group ID
-
-    Argument is a numeric user id or a user name"""
-    try:
-        from pwd import getpwuid
-        passwd = getpwuid(int(user))
-    except ValueError:
-        from pwd import getpwnam
-        passwd = getpwnam(user)
-
-    if hasattr(os, 'initgroups'): # python >= 2.7
-        os.initgroups(passwd.pw_name, passwd.pw_gid)
-    else:
-        import ctypes
-        if ctypes.CDLL(None).initgroups(passwd.pw_name, passwd.pw_gid) < 0:
-            err = ctypes.c_int.in_dll(ctypes.pythonapi,"errno").value
-            raise OSError(err, os.strerror(err), 'initgroups')
-    os.setgid(passwd.pw_gid)
-    os.setuid(passwd.pw_uid)
-    os.environ['HOME'] = passwd.pw_dir
-
-
-def daemonize(pidfile=None, uid=None, umask=0o77):
-    """daemonize a Unix process. Set paranoid umask by default.
-
-    Return 1 in the original process, 2 in the first fork, and None for the
-    second fork (eg daemon process).
-    """
-    # http://www.faqs.org/faqs/unix-faq/programmer/faq/
-    #
-    # fork so the parent can exit
-    if os.fork():   # launch child and...
-        return 1
-    # disconnect from tty and create a new session
-    os.setsid()
-    # fork again so the parent, (the session group leader), can exit.
-    # as a non-session group leader, we can never regain a controlling
-    # terminal.
-    if os.fork():   # launch child again.
-        return 2
-    # move to the root to avoit mount pb
-    os.chdir('/')
-    # redirect standard descriptors
-    null = os.open('/dev/null', os.O_RDWR)
-    for i in range(3):
-        try:
-            os.dup2(null, i)
-        except OSError as e:
-            if e.errno != errno.EBADF:
-                raise
-    os.close(null)
-    # filter warnings
-    warnings.filterwarnings('ignore')
-    # write pid in a file
-    if pidfile:
-        # ensure the directory where the pid-file should be set exists (for
-        # instance /var/run/cubicweb may be deleted on computer restart)
-        piddir = os.path.dirname(pidfile)
-        if not os.path.exists(piddir):
-            os.makedirs(piddir)
-        f = file(pidfile, 'w')
-        f.write(str(os.getpid()))
-        f.close()
-    # set umask if specified
-    if umask is not None:
-        os.umask(umask)
-    # change process uid
-    if uid:
-        setugid(uid)
-    return None