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133 lines
4.2 KiB
133 lines
4.2 KiB
#
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# Chris Lumens <clumens@redhat.com>
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#
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# Copyright 2007, 2008 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use, modify,
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# copy, or redistribute it subject to the terms and conditions of the GNU
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# General Public License v.2. This program is distributed in the hope that it
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# will be useful, but WITHOUT ANY WARRANTY expressed or implied, including the
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# implied warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 51
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# Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. Any Red Hat
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# trademarks that are incorporated in the source code or documentation are not
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# subject to the GNU General Public License and may only be used or replicated
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# with the express permission of Red Hat, Inc.
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#
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import logging
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import os, string, subprocess, sys, signal
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##
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## I18N
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##
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import gettext
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_ = lambda x: gettext.ldgettext("firstboot", x)
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class XFrontEnd:
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def __init__(self):
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self._wm_pid = None
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self.x = None
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def _mergeXresources(self):
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path = "/etc/X11/Xresources"
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if os.access(path, os.R_OK):
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os.system("xrdb -merge %s" % path)
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# Attempt to start up the window manager. Check the value of self.wm_pid
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# afterwards to see if this succeeded.
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def _startWindowManager(self):
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self._wm_pid = os.fork()
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if not self._wm_pid:
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path = "/usr/bin/metacity"
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args = [path, "--display", os.environ["DISPLAY"]]
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os.execvp(path, args)
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status = 0
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try:
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(pid, status) = os.waitpid (self._wm_pid, os.WNOHANG)
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except OSError, (errno, msg):
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logging.error ("starting window manager failed: %s" % msg)
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if status:
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raise RuntimeError, "Window manager failed to start."
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# Initializes the UI for firstboot by starting up an X server and
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# window manager, but returns control to the caller to proceed.
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def start(self):
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os.environ["DISPLAY"] = ":9"
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try:
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args = [":9", "-ac", "-nolisten", "tcp", "vt6", "-br"]
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noOutput = os.open("/dev/null", os.O_RDWR)
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def sigchld_handler(num, frame):
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raise OSError
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def sigusr1_handler(num, frame):
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pass
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def preexec_fn():
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signal.signal(signal.SIGUSR1, signal.SIG_IGN)
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old_sigusr1 = signal.signal(signal.SIGUSR1, sigusr1_handler)
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old_sigchld = signal.signal(signal.SIGCHLD, sigchld_handler)
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self.x = subprocess.Popen(["/usr/bin/Xorg"] + args,
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stdout=noOutput, stderr=noOutput,
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preexec_fn=preexec_fn)
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signal.pause()
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signal.signal(signal.SIGUSR1, old_sigusr1)
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signal.signal(signal.SIGCHLD, old_sigchld)
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except OSError:
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logging.error("X server failed to start")
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raise RuntimeError, "X server failed to start"
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except:
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import traceback
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(ty, value, tb) = sys.exc_info()
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lst = traceback.format_exception (ty, value, tb)
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text = string.joinfields (lst, "")
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print text
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logging.error("X server failed to start")
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raise RuntimeError, "X server failed to start"
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logging.info("X server started successfully.")
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# Init GTK to connect to the X server, then write a token on a pipe to
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# tell our parent process that we're ready to start metacity.
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(rd, wr) = os.pipe()
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pid = os.fork()
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if not pid:
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import gtk
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os.write(wr, "#")
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# Set up the keyboard.
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import system_config_keyboard.keyboard as keyboard
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kbd = keyboard.Keyboard()
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kbd.read()
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kbd.activate()
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# Block until the X server is killed.
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gtk.main()
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os._exit(0)
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# Block on read of token
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os.read(rd, 1)
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os.close(rd)
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os.close(wr)
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self._wm_pid = self._startWindowManager()
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self._mergeXresources()
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def stop(self):
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if self._wm_pid:
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os.kill(self._wm_pid, 15)
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if self.x:
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os.kill(self.x.pid, 15)
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self.x.wait()
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