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#
# exception.py - general exception formatting and saving
#
# Copyright (C) 2000-2013 Red Hat, Inc.
# All rights reserved.
#
# 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 2 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/>.
#
# Author(s): Chris Lumens <clumens@redhat.com>
# David Cantrell <dcantrell@redhat.com>
# Vratislav Podzimek <vpodzime@redhat.com>
#
from meh.handler import *
from meh.dump import *
import isys
import iutil
import sys
import os
import shutil
import signal
import time
from flags import flags
import kickstart
import blivet.errors
from pyanaconda.constants import ROOT_PATH
from gi.repository import GLib
import logging
log = logging.getLogger("anaconda")
import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)
class AnacondaExceptionHandler(ExceptionHandler):
def __init__(self, confObj, intfClass, exnClass, tty_num):
"""
@see: python-meh's ExceptionHandler
@param tty_num: the number of tty the interface is running on
"""
ExceptionHandler.__init__(self, confObj, intfClass, exnClass)
self._intf_tty_num = tty_num
def handleException(self, (ty, value, tb), obj):
def run_handleException_on_idle(args_tuple):
"""
Helper function with one argument only so that it can be registered
with GLib.idle_add() to run on idle.
@param args_tuple: ((ty, value, tb), obj)
"""
trace, obj = args_tuple
ty, value, tb = trace
super(AnacondaExceptionHandler, self).handleException((ty, value, tb),
obj)
return False
if issubclass(ty, blivet.errors.StorageError) and value.hardware_fault:
hw_error_msg = _("The installation was stopped due to what "
"seems to be a problem with your hardware. "
"The exact error message is:\n\n%s.\n\n "
"The installer will now terminate.") % str(value)
self.intf.showError(hw_error_msg)
sys.exit(0)
else:
try:
from gi.repository import Gtk
if Gtk.main_level() > 0:
# main loop is running, don't crash it by running another one
# potentially from a different thread
GLib.idle_add(run_handleException_on_idle,
((ty, value, tb), obj))
else:
super(AnacondaExceptionHandler, self).handleException(
(ty, value, tb), obj)
except RuntimeError:
# X not running (Gtk cannot be initialized)
print "An unknown error has occured, look at the "\
"/tmp/anaconda-tb* file(s) for more details"
super(AnacondaExceptionHandler, self).handleException(
(ty, value, tb), obj)
def postWriteHook(self, (ty, value, tb), anaconda):
# See if /mnt/sysimage is present and put exception there as well
if os.access("/mnt/sysimage/root", os.X_OK):
try:
dest = "/mnt/sysimage/root/%s" % os.path.basename(self.exnFile)
shutil.copyfile(self.exnFile, dest)
except:
log.error("Failed to copy %s to /mnt/sysimage/root" % self.exnFile)
pass
# run kickstart traceback scripts (if necessary)
try:
kickstart.runTracebackScripts(anaconda.ksdata.scripts)
except:
pass
def runDebug(self, (ty, value, tb)):
if self._intf_tty_num != 1:
iutil.vtActivate(1)
pidfl = "/tmp/vncshell.pid"
if os.path.exists(pidfl) and os.path.isfile(pidfl):
pf = open(pidfl, "r")
for pid in pf.readlines():
if not int(pid) == os.getpid():
os.kill(int(pid), signal.SIGKILL)
pf.close()
os.open("/dev/console", os.O_RDWR) # reclaim stdin
os.dup2(0, 1) # reclaim stdout
os.dup2(0, 2) # reclaim stderr
# ^
# |
# +------ dup2 is magic, I tells ya!
# bring back the echo
import termios
si = sys.stdin.fileno()
attr = termios.tcgetattr(si)
attr[3] = attr[3] & termios.ECHO
termios.tcsetattr(si, termios.TCSADRAIN, attr)
print("\nEntering debugger...")
print("Use 'continue' command to quit the debugger and get back to "\
"the main window")
import pdb
pdb.post_mortem (tb)
if self._intf_tty_num != 1:
iutil.vtActivate(self._intf_tty_num)
def initExceptionHandling(anaconda):
fileList = [ "/tmp/anaconda.log", "/tmp/packaging.log",
"/tmp/program.log", "/tmp/storage.log", "/tmp/ifcfg.log",
"/tmp/yum.log", ROOT_PATH + "/root/install.log",
ROOT_PATH + "/root/upgrade.log", "/proc/cmdline" ]
if flags.livecdInstall:
fileList.extend(["/var/log/messages"])
else:
fileList.extend(["/tmp/syslog"])
if anaconda.opts and anaconda.opts.ksfile:
fileList.extend([anaconda.opts.ksfile])
conf = Config(programName="anaconda",
programVersion=isys.getAnacondaVersion(),
attrSkipList=["_intf._actions",
"_intf.storage.bootloader.password",
"_intf.storage.data",
"_intf.storage.encryptionPassphrase",
"_bootloader.encrypted_password",
"_bootloader.password",
"payload._groups",
"payload._yum"],
localSkipList=[ "passphrase", "password" ],
fileList=fileList)
conf.register_callback("lsblk_output", lsblk_callback, attchmnt_only=True)
conf.register_callback("nmcli_dev_list", nmcli_dev_list_callback,
attchmnt_only=True)
conf.register_callback("type", lambda: "anaconda", attchmnt_only=True)
handler = AnacondaExceptionHandler(conf, anaconda.intf.meh_interface,
ReverseExceptionDump, anaconda.intf.tty_num)
handler.install(anaconda)
return conf
def lsblk_callback():
"""Callback to get info about block devices."""
return iutil.execWithCapture("lsblk", ["--perms", "--fs", "--bytes"])
def nmcli_dev_list_callback():
"""Callback to get info about network devices."""
return iutil.execWithCapture("nmcli", ["dev", "list"])
def test_exception_handling():
"""
Function that can be used for testing exception handling in anaconda. It
tries to prepare a worst case scenario designed from bugs seen so far.
"""
# XXX: this is a huge hack, but probably the only way, how we can get
# "unique" stack and thus unique hash and new bugreport
def raise_exception(msg, non_ascii):
timestamp = str(time.time()).split(".", 1)[0]
code = """
def f%s(msg, non_ascii):
raise RuntimeError(msg)
f%s(msg, non_ascii)
""" % (timestamp, timestamp)
eval(compile(code, "str_eval", "exec"))
# test non-ascii characters dumping
non_ascii = u'\u0159'
msg = "NOTABUG: testing exception handling"
# raise exception from a separate thread
# XXX: may create a circular dependency if imported globally
from pyanaconda.threads import AnacondaThread, threadMgr
threadMgr.add(AnacondaThread(name="AnaExceptionHandlingTest",
target=raise_exception,
args=(msg, non_ascii)))
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