2011-01-18 09:24:57 +00:00
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#
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# rescue.py - anaconda rescue mode setup
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#
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# Copyright (C) 2001, 2002, 2003, 2004 Red Hat, Inc. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# 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
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author(s): Mike Fulbright <msf@redhat.com>
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# Jeremy Katz <katzj@redhat.com>
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#
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import sys
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import os
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2014-04-07 12:38:09 +00:00
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from pyanaconda import iutil
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2011-01-18 09:24:57 +00:00
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import shutil
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import time
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2013-01-23 17:28:19 +00:00
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import re
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2011-01-18 09:24:57 +00:00
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2014-04-07 12:38:09 +00:00
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from snack import ButtonChoiceWindow, ListboxChoiceWindow,SnackScreen
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2015-03-23 11:36:12 +00:00
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from pyanaconda.constants import ANACONDA_CLEANUP
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2014-04-07 12:38:09 +00:00
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from pyanaconda.constants_text import TEXT_OK_BUTTON, TEXT_NO_BUTTON, TEXT_YES_BUTTON
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from pyanaconda.text import WaitWindow, OkCancelWindow, ProgressWindow, PassphraseEntryWindow
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from pyanaconda.flags import flags
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from pyanaconda.installinterfacebase import InstallInterfaceBase
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from pyanaconda.i18n import _
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from pyanaconda.kickstart import runPostScripts
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2015-05-30 11:20:59 +00:00
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from blivet import osinstall
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from blivet.errors import StorageError
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2014-04-07 12:38:09 +00:00
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from blivet.devices import LUKSDevice
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2015-05-30 11:20:59 +00:00
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from blivet.osinstall import storageInitialize, mountExistingSystem
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2014-04-07 12:38:09 +00:00
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from pykickstart.constants import KS_REBOOT, KS_SHUTDOWN
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2015-05-30 11:20:59 +00:00
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from gi.repository import BlockDev as blockdev
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2014-04-07 12:38:09 +00:00
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import meh.ui.text
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2011-01-18 09:24:57 +00:00
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import logging
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log = logging.getLogger("anaconda")
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class RescueInterface(InstallInterfaceBase):
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def waitWindow(self, title, text):
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return WaitWindow(self.screen, title, text)
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2013-01-23 17:28:19 +00:00
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def progressWindow(self, title, text, total, updpct = 0.05, pulse = False):
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return ProgressWindow(self.screen, title, text, total, updpct, pulse)
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2011-01-18 09:24:57 +00:00
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2014-04-07 12:38:09 +00:00
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def detailedMessageWindow(self, title, text, longText=None, ty="ok",
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2011-01-18 09:24:57 +00:00
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default=None, custom_icon=None,
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2014-04-07 12:38:09 +00:00
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custom_buttons=None, expanded=False):
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return self.messageWindow(title, text, ty, default, custom_icon,
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2011-01-18 09:24:57 +00:00
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custom_buttons)
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2014-04-07 12:38:09 +00:00
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def messageWindow(self, title, text, ty = "ok", default = None,
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custom_icon=None, custom_buttons=None):
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if custom_buttons is None:
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custom_buttons = []
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if ty == "ok":
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ButtonChoiceWindow(self.screen, title, text, buttons=[TEXT_OK_BUTTON])
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elif ty == "yesno":
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2011-01-18 09:24:57 +00:00
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if default and default == "no":
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btnlist = [TEXT_NO_BUTTON, TEXT_YES_BUTTON]
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else:
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btnlist = [TEXT_YES_BUTTON, TEXT_NO_BUTTON]
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2014-04-07 12:38:09 +00:00
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rc = ButtonChoiceWindow(self.screen, title, text, buttons=btnlist)
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2011-01-18 09:24:57 +00:00
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if rc == "yes":
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return 1
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else:
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return 0
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2014-04-07 12:38:09 +00:00
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elif ty == "custom":
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tmpbut = []
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for but in custom_buttons:
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tmpbut.append(but.replace("_",""))
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rc = ButtonChoiceWindow(self.screen, title, text, width=60, buttons=tmpbut)
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idx = 0
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for b in tmpbut:
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if b.lower() == rc:
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return idx
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idx += 1
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return 0
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else:
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return OkCancelWindow(self.screen, title, text)
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2011-01-18 09:24:57 +00:00
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def passphraseEntryWindow(self, device):
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w = PassphraseEntryWindow(self.screen, device)
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2013-01-23 17:28:19 +00:00
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passphrase = w.run()
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2011-01-18 09:24:57 +00:00
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w.pop()
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2013-01-23 17:28:19 +00:00
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return passphrase
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2011-01-18 09:24:57 +00:00
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2014-04-07 12:38:09 +00:00
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@property
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def meh_interface(self):
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return self._meh_interface
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@property
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def tty_num(self):
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return 1
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2011-01-18 09:24:57 +00:00
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def shutdown (self):
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2013-01-23 17:28:19 +00:00
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self.screen.finish()
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2011-01-18 09:24:57 +00:00
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def suspend(self):
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pass
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def resume(self):
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pass
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2013-01-23 17:28:19 +00:00
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def __init__(self):
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2011-01-18 09:24:57 +00:00
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InstallInterfaceBase.__init__(self)
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2013-01-23 17:28:19 +00:00
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self.screen = SnackScreen()
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2014-04-07 12:38:09 +00:00
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self._meh_interface = meh.ui.text.TextIntf()
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2011-01-18 09:24:57 +00:00
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def makeFStab(instPath = ""):
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if os.access("/proc/mounts", os.R_OK):
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f = open("/proc/mounts", "r")
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buf = f.read()
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f.close()
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else:
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buf = ""
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try:
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f = open(instPath + "/etc/fstab", "a")
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if buf:
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f.write(buf)
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f.close()
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2013-01-23 17:28:19 +00:00
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except IOError as e:
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2014-04-07 12:38:09 +00:00
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log.info("failed to write /etc/fstab: %s", e)
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2011-01-18 09:24:57 +00:00
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# make sure they have a resolv.conf in the chroot
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def makeResolvConf(instPath):
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2013-01-23 17:28:19 +00:00
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if flags.imageInstall:
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return
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2011-01-18 09:24:57 +00:00
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if not os.access("/etc/resolv.conf", os.R_OK):
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return
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if os.access("%s/etc/resolv.conf" %(instPath,), os.R_OK):
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f = open("%s/etc/resolv.conf" %(instPath,), "r")
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buf = f.read()
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f.close()
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else:
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buf = ""
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# already have a nameserver line, don't worry about it
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if buf.find("nameserver") != -1:
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return
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f = open("/etc/resolv.conf", "r")
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buf = f.read()
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f.close()
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# no nameserver, we can't do much about it
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if buf.find("nameserver") == -1:
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return
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shutil.copyfile("%s/etc/resolv.conf" %(instPath,),
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"%s/etc/resolv.conf.bak" %(instPath,))
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f = open("%s/etc/resolv.conf" %(instPath,), "w+")
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f.write(buf)
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f.close()
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def runShell(screen = None, msg=""):
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if screen:
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screen.suspend()
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print
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if msg:
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2015-03-23 11:36:12 +00:00
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print(msg)
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2013-01-23 17:28:19 +00:00
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if flags.imageInstall:
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print(_("Run %s to unmount the system when you are finished.")
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% ANACONDA_CLEANUP)
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else:
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print(_("When finished please exit from the shell and your "
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"system will reboot."))
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2011-01-18 09:24:57 +00:00
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print
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proc = None
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if os.path.exists("/usr/bin/firstaidkit-qs"):
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2015-05-30 11:20:59 +00:00
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iutil.execWithRedirect("/usr/bin/firstaidkit-qs", [])
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2013-01-23 17:28:19 +00:00
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2011-01-18 09:24:57 +00:00
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if proc is None or proc.returncode!=0:
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if os.path.exists("/bin/bash"):
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iutil.execConsole()
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else:
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print(_("Unable to find /bin/sh to execute! Not starting shell"))
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time.sleep(5)
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if screen:
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screen.finish()
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2014-04-07 12:38:09 +00:00
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def _exception_handler_wrapper(orig_except_handler, screen, *args):
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"""
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Helper function that wraps the exception handler with snack shutdown.
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:param orig_except_handler: original exception handler that should be run
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after the wrapping changes are done
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:type orig_except_handler: exception handler as can be set as sys.excepthook
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:param screen: snack screen that should be shut down before further actions
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:type screen: snack screen
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"""
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screen.finish()
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return orig_except_handler(*args)
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def _unlock_devices(intf, storage):
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try_passphrase = None
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for device in storage.devices:
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if device.format.type == "luks":
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skip = False
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unlocked = False
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while not (skip or unlocked):
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if try_passphrase is None:
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passphrase = intf.passphraseEntryWindow(device.name)
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else:
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passphrase = try_passphrase
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2013-01-23 17:28:19 +00:00
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2014-04-07 12:38:09 +00:00
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if passphrase is None:
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# canceled
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skip = True
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else:
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device.format.passphrase = passphrase
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try:
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device.setup()
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device.format.setup()
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luks_dev = LUKSDevice(device.format.mapName,
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parents=[device],
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exists=True)
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storage.devicetree._addDevice(luks_dev)
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storage.devicetree.populate()
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unlocked = True
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# try to use the same passhprase for other devices
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try_passphrase = passphrase
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2015-05-30 11:20:59 +00:00
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except (StorageError, blockdev.CryptoError) as err:
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log.error("Failed to unlock %s: %s", device.name, err)
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2014-04-07 12:38:09 +00:00
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device.teardown(recursive=True)
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device.format.passphrase = None
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try_passphrase = None
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def doRescue(intf, rescue_mount, ksdata):
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import blivet
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# XXX: hook the exception handler wrapper that turns off snack first
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orig_hook = sys.excepthook
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sys.excepthook = lambda ty, val, tb: _exception_handler_wrapper(orig_hook,
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intf.screen,
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ty, val, tb)
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for f in [ "services", "protocols", "group", "joe", "man.config",
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"nsswitch.conf", "selinux", "mke2fs.conf" ]:
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2011-01-18 09:24:57 +00:00
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try:
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2014-04-07 12:38:09 +00:00
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os.symlink('/mnt/runtime/etc/' + f, '/etc/' + f)
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2013-01-23 17:28:19 +00:00
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except OSError:
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2011-01-18 09:24:57 +00:00
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pass
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# Early shell access with no disk access attempts
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2013-01-23 17:28:19 +00:00
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if not rescue_mount:
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2011-01-18 09:24:57 +00:00
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# the %post should be responsible for mounting all needed file systems
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# NOTE: 1st script must be bash or simple python as nothing else might be available in the rescue image
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2013-01-23 17:28:19 +00:00
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if flags.automatedInstall and ksdata.scripts:
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2014-04-07 12:38:09 +00:00
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runPostScripts(ksdata.scripts)
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2011-01-18 09:24:57 +00:00
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else:
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2014-04-07 12:38:09 +00:00
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runShell()
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2011-01-18 09:24:57 +00:00
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sys.exit(0)
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2013-01-23 17:28:19 +00:00
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if flags.automatedInstall:
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readOnly = ksdata.rescue.romount
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2011-01-18 09:24:57 +00:00
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else:
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# prompt to see if we should try and find root filesystem and mount
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# everything in /etc/fstab on that root
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2013-01-23 17:28:19 +00:00
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while True:
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rc = ButtonChoiceWindow(intf.screen, _("Rescue"),
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_("The rescue environment will now attempt to find your "
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"Linux installation and mount it under the directory "
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"%s. You can then make any changes required to your "
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"system. If you want to proceed with this step choose "
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"'Continue'. You can also choose to mount your file systems "
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"read-only instead of read-write by choosing 'Read-Only'. "
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"\n\n"
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"If for some reason this process fails you can choose 'Skip' "
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"and this step will be skipped and you will go directly to a "
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2015-03-23 11:36:12 +00:00
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"command shell.\n\n") % (iutil.getSysroot(),),
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2013-01-23 17:28:19 +00:00
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[_("Continue"), _("Read-Only"), _("Skip")] )
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if rc == _("Skip").lower():
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runShell(intf.screen)
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sys.exit(0)
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else:
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readOnly = rc == _("Read-Only").lower()
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2011-01-18 09:24:57 +00:00
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2013-01-23 17:28:19 +00:00
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break
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2011-01-18 09:24:57 +00:00
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2014-04-07 12:38:09 +00:00
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sto = blivet.Blivet(ksdata=ksdata)
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2015-05-30 11:20:59 +00:00
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storageInitialize(sto, ksdata, [])
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2014-04-07 12:38:09 +00:00
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_unlock_devices(intf, sto)
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2015-05-30 11:20:59 +00:00
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roots = osinstall.findExistingInstallations(sto.devicetree)
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2011-01-18 09:24:57 +00:00
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2013-01-23 17:28:19 +00:00
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if not roots:
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2011-01-18 09:24:57 +00:00
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root = None
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2014-04-07 12:38:09 +00:00
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elif len(roots) == 1:
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2013-01-23 17:28:19 +00:00
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root = roots[0]
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2011-01-18 09:24:57 +00:00
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else:
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2013-01-23 17:28:19 +00:00
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height = min (len (roots), 12)
|
2011-01-18 09:24:57 +00:00
|
|
|
if height == 12:
|
|
|
|
scroll = 1
|
|
|
|
else:
|
|
|
|
scroll = 0
|
|
|
|
|
2013-01-23 17:28:19 +00:00
|
|
|
lst = []
|
|
|
|
for root in roots:
|
|
|
|
lst.append("%s" % root.name)
|
2011-01-18 09:24:57 +00:00
|
|
|
|
|
|
|
(button, choice) = \
|
2013-01-23 17:28:19 +00:00
|
|
|
ListboxChoiceWindow(intf.screen, _("System to Rescue"),
|
2011-01-18 09:24:57 +00:00
|
|
|
_("Which device holds the root partition "
|
2013-01-23 17:28:19 +00:00
|
|
|
"of your installation?"), lst,
|
2011-01-18 09:24:57 +00:00
|
|
|
[ _("OK"), _("Exit") ], width = 30,
|
|
|
|
scroll = scroll, height = height,
|
|
|
|
help = "multipleroot")
|
|
|
|
|
2013-01-23 17:28:19 +00:00
|
|
|
if button == _("Exit").lower():
|
2011-01-18 09:24:57 +00:00
|
|
|
root = None
|
|
|
|
else:
|
2013-01-23 17:28:19 +00:00
|
|
|
root = roots[choice]
|
2011-01-18 09:24:57 +00:00
|
|
|
|
2013-01-23 17:28:19 +00:00
|
|
|
rootmounted = False
|
2011-01-18 09:24:57 +00:00
|
|
|
|
|
|
|
if root:
|
|
|
|
try:
|
2013-01-23 17:28:19 +00:00
|
|
|
if not flags.imageInstall:
|
|
|
|
msg = _("The system will reboot automatically when you exit "
|
|
|
|
"from the shell.")
|
|
|
|
else:
|
|
|
|
msg = _("Run %s to unmount the system "
|
|
|
|
"when you are finished.") % ANACONDA_CLEANUP
|
2011-01-18 09:24:57 +00:00
|
|
|
|
2015-05-30 11:20:59 +00:00
|
|
|
mountExistingSystem(sto.fsset, root.device, readOnly=readOnly)
|
|
|
|
|
|
|
|
if flags.automatedInstall:
|
|
|
|
log.info("System has been mounted under: %s", iutil.getSysroot())
|
2011-01-18 09:24:57 +00:00
|
|
|
else:
|
2015-05-30 11:20:59 +00:00
|
|
|
ButtonChoiceWindow(intf.screen, _("Rescue"),
|
|
|
|
_("Your system has been mounted under %(rootPath)s.\n\n"
|
|
|
|
"Press <return> to get a shell. If you would like to "
|
|
|
|
"make your system the root environment, run the command:\n\n"
|
|
|
|
"\tchroot %(rootPath)s\n\n%(msg)s") %
|
|
|
|
{'rootPath': iutil.getSysroot(),
|
|
|
|
'msg': msg},
|
|
|
|
[_("OK")] )
|
|
|
|
rootmounted = True
|
|
|
|
|
|
|
|
# now turn on swap
|
|
|
|
if not readOnly:
|
2011-01-18 09:24:57 +00:00
|
|
|
try:
|
2015-05-30 11:20:59 +00:00
|
|
|
sto.turnOnSwap()
|
|
|
|
except StorageError:
|
|
|
|
log.error("Error enabling swap")
|
|
|
|
|
|
|
|
# and selinux too
|
|
|
|
if flags.selinux:
|
|
|
|
# we have to catch the possible exception
|
|
|
|
# because we support read-only mounting
|
2011-01-18 09:24:57 +00:00
|
|
|
try:
|
2015-05-30 11:20:59 +00:00
|
|
|
fd = open("%s/.autorelabel" % iutil.getSysroot(), "w+")
|
|
|
|
fd.close()
|
|
|
|
except IOError:
|
|
|
|
log.warning("cannot touch /.autorelabel")
|
|
|
|
|
|
|
|
# set a library path to use mounted fs
|
|
|
|
libdirs = os.environ.get("LD_LIBRARY_PATH", "").split(":")
|
|
|
|
mounted = ["/mnt/sysimage%s" % mdir for mdir in libdirs]
|
|
|
|
iutil.setenv("LD_LIBRARY_PATH", ":".join(libdirs + mounted))
|
|
|
|
|
|
|
|
# find groff data dir
|
|
|
|
gversion = None
|
|
|
|
try:
|
|
|
|
glst = os.listdir("/mnt/sysimage/usr/share/groff")
|
|
|
|
except OSError:
|
|
|
|
pass
|
|
|
|
else:
|
|
|
|
# find a directory which is a numeral, its where
|
|
|
|
# data files are
|
|
|
|
for gdir in glst:
|
|
|
|
if re.match(r'\d[.\d]+\d$', gdir):
|
|
|
|
gversion = gdir
|
|
|
|
break
|
|
|
|
|
|
|
|
if gversion is not None:
|
|
|
|
gpath = "/mnt/sysimage/usr/share/groff/"+gversion
|
|
|
|
iutil.setenv("GROFF_FONT_PATH", gpath + '/font')
|
|
|
|
iutil.setenv("GROFF_TMAC_PATH", "%s:/mnt/sysimage/usr/share/groff/site-tmac" % (gpath + '/tmac',))
|
|
|
|
|
|
|
|
# do we have bash?
|
|
|
|
try:
|
|
|
|
if os.access("/usr/bin/bash", os.R_OK):
|
|
|
|
os.symlink ("/usr/bin/bash", "/bin/bash")
|
|
|
|
except OSError:
|
|
|
|
pass
|
2013-01-23 17:28:19 +00:00
|
|
|
except (ValueError, LookupError, SyntaxError, NameError):
|
|
|
|
raise
|
2015-05-30 11:20:59 +00:00
|
|
|
except Exception as e: # pylint: disable=broad-except
|
2014-04-07 12:38:09 +00:00
|
|
|
log.error("doRescue caught exception: %s", e)
|
2013-01-23 17:28:19 +00:00
|
|
|
if flags.automatedInstall:
|
2011-01-18 09:24:57 +00:00
|
|
|
log.error("An error occurred trying to mount some or all of your system")
|
|
|
|
else:
|
2013-01-23 17:28:19 +00:00
|
|
|
if not flags.imageInstall:
|
|
|
|
msg = _("The system will reboot automatically when you "
|
|
|
|
"exit from the shell.")
|
|
|
|
else:
|
|
|
|
msg = _("Run %s to unmount the system "
|
|
|
|
"when you are finished.") % ANACONDA_CLEANUP
|
|
|
|
|
|
|
|
ButtonChoiceWindow(intf.screen, _("Rescue"),
|
2011-01-18 09:24:57 +00:00
|
|
|
_("An error occurred trying to mount some or all of your "
|
|
|
|
"system. Some of it may be mounted under %s.\n\n"
|
2015-03-23 11:36:12 +00:00
|
|
|
"Press <return> to get a shell.") % iutil.getSysroot() + msg,
|
2011-01-18 09:24:57 +00:00
|
|
|
[_("OK")] )
|
|
|
|
else:
|
2013-01-23 17:28:19 +00:00
|
|
|
if flags.automatedInstall and ksdata.reboot.action in [KS_REBOOT, KS_SHUTDOWN]:
|
2011-01-18 09:24:57 +00:00
|
|
|
log.info("No Linux partitions found")
|
2013-01-23 17:28:19 +00:00
|
|
|
intf.screen.finish()
|
2011-01-18 09:24:57 +00:00
|
|
|
print(_("You don't have any Linux partitions. Rebooting.\n"))
|
|
|
|
sys.exit(0)
|
|
|
|
else:
|
2013-01-23 17:28:19 +00:00
|
|
|
if not flags.imageInstall:
|
|
|
|
msg = _(" The system will reboot automatically when you exit "
|
|
|
|
"from the shell.")
|
|
|
|
else:
|
|
|
|
msg = ""
|
|
|
|
ButtonChoiceWindow(intf.screen, _("Rescue Mode"),
|
2011-01-18 09:24:57 +00:00
|
|
|
_("You don't have any Linux partitions. Press "
|
2013-01-23 17:28:19 +00:00
|
|
|
"return to get a shell.%s") % msg,
|
2011-01-18 09:24:57 +00:00
|
|
|
[ _("OK") ], width = 50)
|
|
|
|
|
|
|
|
msgStr = ""
|
|
|
|
|
|
|
|
if rootmounted and not readOnly:
|
2013-01-23 17:28:19 +00:00
|
|
|
sto.makeMtab()
|
2011-01-18 09:24:57 +00:00
|
|
|
try:
|
2015-03-23 11:36:12 +00:00
|
|
|
makeResolvConf(iutil.getSysroot())
|
2013-01-23 17:28:19 +00:00
|
|
|
except (OSError, IOError) as e:
|
2014-04-07 12:38:09 +00:00
|
|
|
log.error("error making a resolv.conf: %s", e)
|
2015-03-23 11:36:12 +00:00
|
|
|
msgStr = _("Your system is mounted under the %s directory.") % (iutil.getSysroot(),)
|
2013-01-23 17:28:19 +00:00
|
|
|
ButtonChoiceWindow(intf.screen, _("Rescue"), msgStr, [_("OK")] )
|
|
|
|
|
|
|
|
# we do not need ncurses anymore, shut them down
|
|
|
|
intf.shutdown()
|
2011-01-18 09:24:57 +00:00
|
|
|
|
|
|
|
#create /etc/fstab in ramdisk, so it is easier to work with RO mounted filesystems
|
|
|
|
makeFStab()
|
|
|
|
|
|
|
|
# run %post if we've mounted everything
|
2013-01-23 17:28:19 +00:00
|
|
|
if rootmounted and not readOnly and flags.automatedInstall:
|
|
|
|
runPostScripts(ksdata.scripts)
|
|
|
|
|
|
|
|
# start shell if reboot wasn't requested
|
|
|
|
if not flags.automatedInstall or not ksdata.reboot.action in [KS_REBOOT, KS_SHUTDOWN]:
|
|
|
|
runShell(msg=msgStr)
|
2011-01-18 09:24:57 +00:00
|
|
|
|
|
|
|
sys.exit(0)
|