def test_03_get_ret_success(self):
pid = os.fork()
if not pid: # child
trace.me()
os.kill(os.getpid(), signal.SIGSTOP)
os.kill(os.getpid(), 0)
os._exit(0)
else: # parent
os.waitpid(pid, 0)
trace.setup(pid, trace.OPTION_SYSGOOD)
# Loop until we get to the kill() system call as there's no
# guarantee that other system calls won't be called beforehand.
ev = -1
insyscall = False
while ev != event.EVENT_EXIT_GENUINE:
trace.syscall(pid)
pid, status = os.waitpid(pid, 0)
ev = event.decide(status)
if ev == event.EVENT_SYSCALL:
scno = syscall.get_no(pid)
name = syscall.name(scno)
if insyscall and name == 'kill':
ret = syscall.get_ret(pid)
self.assertEqual(ret, 0)
if not insyscall:
insyscall = True
else:
insyscall = False
def test_03_get_ret_success(self):
pid = os.fork()
if not pid: # child
trace.me()
os.kill(os.getpid(), signal.SIGSTOP)
os.kill(os.getpid(), 0)
os._exit(0)
else: # parent
os.waitpid(pid, 0)
trace.setup(pid, trace.OPTION_SYSGOOD)
# Loop until we get to the kill() system call as there's no
# guarantee that other system calls won't be called beforehand.
ev = -1
insyscall = False
while ev != event.EVENT_EXIT_GENUINE:
trace.syscall(pid)
pid, status = os.waitpid(pid, 0)
ev = event.decide(status)
if ev == event.EVENT_SYSCALL:
scno = syscall.get_no(pid)
name = syscall.name(scno)
if insyscall and name == 'kill':
ret = syscall.get_ret(pid)
self.assertEqual(ret, 0)
if not insyscall:
insyscall = True
else:
insyscall = False
def test_04_get_ret_fail(self):
pid = os.fork()
if not pid: # child
trace.me()
os.kill(os.getpid(), signal.SIGSTOP)
try:
open('')
except IOError:
pass
os._exit(0)
else: # parent
pid, status = os.waitpid(pid, 0)
self.assert_(os.WIFSTOPPED(status), "%#x" % status)
self.assertEqual(os.WSTOPSIG(status), signal.SIGSTOP, "%#x" % status)
# Loop until we get to the open() system call as there's no
# guarantee that other system calls won't be called beforehand.
stop_at_exit = False
while True:
if stop_at_exit:
trace.syscall_exit(pid, 0)
else:
trace.syscall_entry(pid, 0)
pid, status = os.waitpid(pid, 0)
self.assert_(os.WIFSTOPPED(status), "%#x" % status)
self.assertEqual(os.WSTOPSIG(status), signal.SIGTRAP, "%#x" % status)
scno = syscall.get_no(pid)
name = syscall.name(scno)
if name == 'open':
stop_at_exit = True
continue
elif stop_at_exit:
ret = syscall.get_ret(pid)
self.assertEqual(ret, -errno.ENOENT)
break
try: trace.kill(pid)
except OSError: pass