blob: 708c9648e1856f03ef2dba22557e73e3c9cbde36 [file] [log] [blame]
# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import os
from autotest_lib.client.bin import test, utils
class crashme(test.test):
Runs the crashme random code test suite.
crashme [+]<nbytes>[.inc] <srand> <ntrys> [nsub] [verbose]
The [NBYTES] should be an integer, specifying the size of
the random data string in bytes. If given negative then the
bytes are printed instead of being executed. If given with
an explicit plus sign then the storage for the bytes is
freshly malloc'ed each time. This can have an effect on
machines with seperate I and D cache mechanisms. The
argument can also have a dot in it, X.Y, in which case Y is
a increment for a pointer into the random data. The buffer
is recalculated only when the pointer gets near the end of
the data.
The [SRAND] is an input seed to the random number generator,
passed to srand.
The [NTRIES] is how many times to loop before exiting
normally from the program.
The [NSUB] is optional, the number of vfork subprocesses
running all at once. If negative run one after another. If
given as a time hrs:mns:scs (hours, minutes, seconds) then
one sub-process will be run to completion, followed by
another, until the time limit has been reached. If this
argument is given as the empty string or . then it is
When in sequential-subprocess mode there is a 30 second time
limit on each subprocess. This is to allow the
instruction-set-space random walk to continue when a
process bashes itself into an infinite loop. For example,
the ntrys can be bashed to a very large number with nbytes
bashed to zero. (10 second limit on Windows NT).
The SRAND argument is incremented by one for each subprocess.
The [VERBOSE] arg is optional. 0 is the least verbose, 5 the
version = 2
def initialize(self):
def setup(self, tarball = 'crashme_2.4.orig.tar.bz2'):
tarball = utils.unmap_url(self.bindir, tarball, self.tmpdir)
utils.extract_tarball_to_dir(tarball, self.srcdir)
utils.system('patch -p 1 <../crashme_2.4-9.diff')
def run_once(self, args_list=''):
if args_list:
args = args_list
args = ''
crashme_path = os.path.join(self.srcdir, 'crashme')
utils.system("%s %s" % (crashme_path, args))