1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
#
# exception.py - general exception formatting and saving
#
# Copyright (C) 2000-2012 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>
#
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 storage.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 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)
if issubclass(ty, storage.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)):
# vtActivate does not work on certain ppc64 machines, so just skip
# that and continue with the rest of the debugger setup.
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)
iutil.vtActivate(6)
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",
"_bootloader.encrypted_password",
"_bootloader.password",
"payload._groups",
"payload._yum"],
localSkipList=[ "passphrase", "password" ],
fileList=fileList)
handler = AnacondaExceptionHandler(conf, anaconda.intf, ReverseExceptionDump)
handler.install(anaconda)
return conf
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)))
|
