1import os 2from autotest_lib.client.bin import test, utils 3 4 5class scrashme(test.test): 6 """ 7 Runs the scrashme syscalls test suite. This test mode will exercise 8 kernel syscalls randomically, or in a sequential fashion. 9 10 @note: As of the current version shipped, scrashme does support the 11 following options: 12 13 --mode must be one of random, rotate, regval, struct, or capcheck 14 --mode=random : pass random values in registers to random syscalls 15 -s#: use # as random seed. 16 17 --mode=rotate : rotate value through all register combinations 18 -k: pass kernel addresses as arguments. 19 -u: pass userspace addresses as arguments. 20 -x#: use value as register arguments. 21 -z: use all zeros as register parameters. 22 -Sr: pass struct filled with random junk. 23 -Sxx: pass struct filled with hex value xx. 24 25 --mode=capcheck: check syscalls that call capable() return -EPERM. 26 27 -b#: begin at offset #. 28 -c#: target syscall # only. 29 -N#: do # syscalls then exit. 30 -P: poison buffers before calling syscall, and check afterwards. 31 -p: pause after syscall. 32 33 @see: http://www.codemonkey.org.uk/projects/scrashme/ 34 @author: Yi Yang <yang.y.yi@gmail.com> 35 """ 36 version = 2 37 38 def initialize(self): 39 self.job.require_gcc() 40 41 42 def setup(self, tarball = 'scrashme-git-snapshot-03-18-2010.tar.bz2'): 43 diff_src = os.path.join(self.bindir, 'testfix.diff') 44 tarball = utils.unmap_url(self.bindir, tarball, self.tmpdir) 45 utils.extract_tarball_to_dir(tarball, self.srcdir) 46 os.chdir(self.srcdir) 47 if os.path.exists(diff_src): 48 utils.system('patch -i %s' % diff_src) 49 utils.make() 50 51 52 def run_once(self, args_list=''): 53 if args_list: 54 args = args_list 55 else: 56 args = '--mode rotate' 57 58 scrashme_path = os.path.join(self.srcdir, 'scrashme') 59 utils.system("%s %s" % (scrashme_path, args)) 60