def describe_exit_status(exitstatus, exitcodedescs=None):
import warnings
warnings.warn("Use ExitCode instead of describe_exit_status()",
DeprecationWarning)
desc = []
if os.WIFSIGNALED(exitstatus):
signum = os.WTERMSIG(exitstatus)
signame = signum_to_name(signum)
if signame:
signame = " (%s)" % signame
else:
signame = ""
desc.append("Killed by signal %d%s" % (signum, signame))
if os.WIFEXITED(exitstatus):
exitcode = os.WEXITSTATUS(exitstatus)
if exitcodedescs and exitcodedescs.get(exitcode):
codedesc = " (%s)" % exitcodedescs.get(exitcode)
else:
codedesc = ''
desc.append("Exited with code %d%s" % (exitcode, codedesc))
if os.WIFSTOPPED(exitstatus):
desc.append("Stopped by signal %d" % os.WSTOPSIG(exitstatus))
if os.WCOREDUMP(exitstatus):
desc.append("coredumped")
return desc
def wait_for_active_job(last_task=None, backgrounded=False):
"""
Wait for the active job to finish, to be killed by SIGINT, or to be
suspended by ctrl-z.
"""
_clear_dead_jobs()
active_task = get_next_task()
# Return when there are no foreground active task
if active_task is None:
return last_task
obj = active_task["obj"]
backgrounded = False
try:
_, wcode = os.waitpid(obj.pid, os.WUNTRACED)
except ChildProcessError: # No child processes
return wait_for_active_job(last_task=active_task,
backgrounded=backgrounded)
if os.WIFSTOPPED(wcode):
print("^Z")
active_task["status"] = "stopped"
backgrounded = True
elif os.WIFSIGNALED(wcode):
print() # get a newline because ^C will have been printed
obj.signal = (os.WTERMSIG(wcode), os.WCOREDUMP(wcode))
obj.returncode = None
else:
obj.returncode = os.WEXITSTATUS(wcode)
obj.signal = None
return wait_for_active_job(last_task=active_task,
backgrounded=backgrounded)
def waitpid(self):
if self.pid == 0:
return
try:
pid, status = os.waitpid(self.pid, os.WNOHANG)
except OSError as exc:
self.pid = 0
error('waitpid: %s', exc)
return
if (pid, status) != (0, 0):
self.pid = 0
if os.WCOREDUMP(status):
self.pid_status = ('%s process terminated with a core dump.' %
self._pgm)
elif os.WIFSIGNALED(status):
self.pid_status = (
'%s process terminated after receiving signal %d.' %
(self._pgm, os.WTERMSIG(status)))
elif os.WIFEXITED(status):
self.pid_status = ('%s process terminated with exit %d.' %
(self._pgm, os.WEXITSTATUS(status)))
else:
self.pid_status = '%s process terminated.' % self._pgm
def wait_for_active_job():
"""
Wait for the active job to finish, to be killed by SIGINT, or to be
suspended by ctrl-z.
"""
_clear_dead_jobs()
active_task = get_next_task()
# Return when there are no foreground active task
if active_task is None:
_give_terminal_to(_shell_pgrp) # give terminal back to the shell
return
pgrp = active_task['pgrp']
obj = active_task['obj']
# give the terminal over to the fg process
_give_terminal_to(pgrp)
_continue(active_task)
_, wcode = os.waitpid(obj.pid, os.WUNTRACED)
if os.WIFSTOPPED(wcode):
print() # get a newline because ^Z will have been printed
active_task['status'] = "stopped"
elif os.WIFSIGNALED(wcode):
print() # get a newline because ^C will have been printed
obj.signal = (os.WTERMSIG(wcode), os.WCOREDUMP(wcode))
obj.returncode = None
else:
obj.returncode = os.WEXITSTATUS(wcode)
obj.signal = None
return wait_for_active_job()
def processEnded(self, reason=None):
"""
When we are told the process ended, try to notify the other side about
how the process ended using the exit-signal or exit-status requests.
Also, close the channel.
"""
if reason is not None:
err = reason.value
if err.signal is not None:
signame = self._getSignalName(err.signal)
if getattr(os, "WCOREDUMP", None) is not None and os.WCOREDUMP(
err.status):
log.info("exitSignal: {signame} (core dumped)",
signame=signame)
coreDumped = True
else:
log.info("exitSignal: {}", signame=signame)
coreDumped = False
self.session.conn.sendRequest(
self.session,
b"exit-signal",
common.NS(networkString(signame[3:])) +
(b"\1" if coreDumped else b"\0") + common.NS(b"") +
common.NS(b""),
)
elif err.exitCode is not None:
log.info("exitCode: {exitCode!r}", exitCode=err.exitCode)
self.session.conn.sendRequest(self.session, b"exit-status",
struct.pack(">L", err.exitCode))
self.session.loseConnection()
def print_exit_status(process, printer):
exit_signal = None
exit_code = None
core_dumped = False
try:
wait_result = os.waitpid(process.pid, 0)[1]
if os.WIFSIGNALED(wait_result):
exit_signal = os.WTERMSIG(wait_result)
exit_code = 128 + exit_signal
elif os.WIFEXITED(wait_result):
exit_code = os.WEXITSTATUS(wait_result)
core_dumped = os.WCOREDUMP(wait_result)
except ChildProcessError:
# Must be Windows; waiting for a terminated process doesn't work (?)
exit_code = process.returncode
if exit_signal is not None:
signal_name = signal_names.get(exit_signal, 'unknown signal')
printer.print(Fore.RED + 'Terminated by %s (%i)' %
(signal_name, exit_signal) + Style.RESET_ALL)
exit_code = 128 + exit_signal
if core_dumped:
printer.print(Fore.RED + 'Core dumped' + Style.RESET_ALL)
return exit_code
def waitpid(self, nohang=os.WNOHANG):
"""Wait on the process."""
if self.pid != 0:
try:
pid, status = os.waitpid(self.pid, nohang)
except OSError, err:
# may be called by sigchld_handler while in close()
if err.errno == errno.ECHILD:
return
raise
if (pid, status) != (0, 0):
self.pid = 0
if self.sig_handler is not None:
signal.signal(signal.SIGCHLD, self.sig_handler)
if os.WCOREDUMP(status):
self.pid_status = (
'%s process terminated with a core dump.' %
self.pgm_name)
elif os.WIFSIGNALED(status):
self.pid_status = (
'%s process terminated after receiving signal %d.' %
(self.pgm_name, os.WTERMSIG(status)))
elif os.WIFEXITED(status):
self.pid_status = ('%s process terminated with exit %d.' %
(self.pgm_name, os.WEXITSTATUS(status)))
else:
self.pid_status = '%s process terminated.' % self.pgm_name
self.close()
def decode_wait_status(sts):
"""Decode the status returned by wait() or waitpid().
Return a tuple (exitstatus, message) where exitstatus is the exit
status, or -1 if the process was killed by a signal; and message
is a message telling what happened. It is the caller's
responsibility to display the message.
"""
if os.WIFEXITED(sts):
es = os.WEXITSTATUS(sts) & 0xffff
msg = "exit status %s" % es
return es, msg
elif os.WIFSIGNALED(sts):
sig = os.WTERMSIG(sts)
msg = "terminated by %s" % signame(sig)
if hasattr(os, "WCOREDUMP"):
iscore = os.WCOREDUMP(sts)
else:
iscore = sts & 0x80
if iscore:
msg += " (core dumped)"
return -1, msg
else:
msg = "unknown termination cause 0x%04x" % sts
return -1, msg
def post_send(self):
'''
This routine is called after the fuzzer transmits a test case and returns the status of the target.
@rtype: Boolean
@return: Return True if the target is still active, False otherwise.
'''
if not self.dbg.isAlive():
exit_status = self.dbg.get_exit_status()
rec_file = open(self.crash_bin, 'a')
if os.WCOREDUMP(exit_status):
reason = 'Segmentation fault'
elif os.WIFSTOPPED(exit_status):
reason = 'Stopped with signal ' + str(os.WTERMSIG(exit_status))
elif os.WIFSIGNALED(exit_status):
reason = 'Terminated with signal ' + str(
os.WTERMSIG(exit_status))
elif os.WIFEXITED(exit_status):
reason = 'Exit with code - ' + str(os.WEXITSTATUS(exit_status))
else:
reason = 'Process died for unknown reason'
self.last_synopsis = '[%s] Crash : Test - %d Reason - %s\n' % (
time.strftime("%I:%M.%S"), self.test_number, reason)
rec_file.write(self.last_synopsis)
rec_file.close()
return self.dbg.isAlive()
def processEnded(self, reason=None):
"""
When we are told the process ended, try to notify the other side about
how the process ended using the exit-signal or exit-status requests.
Also, close the channel.
"""
if reason is not None:
err = reason.value
if err.signal is not None:
signame = self._getSignalName(err.signal)
if (getattr(os, 'WCOREDUMP', None) is not None
and os.WCOREDUMP(err.status)):
log.msg('exitSignal: %s (core dumped)' % (signame, ))
coreDumped = 1
else:
log.msg('exitSignal: %s' % (signame, ))
coreDumped = 0
self.session.conn.sendRequest(
self.session, 'exit-signal',
common.NS(signame[3:]) + chr(coreDumped) + common.NS('') +
common.NS(''))
elif err.exitCode is not None:
log.msg('exitCode: %r' % (err.exitCode, ))
self.session.conn.sendRequest(self.session, 'exit-status',
struct.pack('>L', err.exitCode))
self.session.loseConnection()
def signal(self):
"""Process signal, or None."""
s = getattr(self.proc, "signal", None)
if s is None:
rtn = self.returncode
if rtn is not None and rtn != 0:
s = (-1 * rtn, rtn < 0 if xp.ON_WINDOWS else os.WCOREDUMP(rtn))
return s
def signal(self):
"""If the process was terminated by a signal a 2-tuple is returned
containing the signal number and a boolean indicating whether a core
file was produced. Otherwise None is returned."""
if os.WIFSIGNALED(self._tpty.wcode):
return (os.WTERMSIG(self._tpty.wcode),
os.WCOREDUMP(self._tpty.wcode))
else:
return None
def run(self):
"""
self.exit_status = os.waitpid(self.pid, os.WNOHANG | os.WUNTRACED)
while self.exit_status == (0, 0):
self.exit_status = os.waitpid(self.pid, os.WNOHANG | os.WUNTRACED)
"""
self.spawn_target()
self.finished_starting.set()
if self.proc_name:
gone, _ = psutil.wait_procs([self._psutil_proc])
self.exit_status = gone[0].returncode
else:
exit_info = os.waitpid(self.pid, 0)
self.exit_status = exit_info[1] # [0] is the pid
default_reason = "Process died for unknown reason"
if self.exit_status is not None:
if os.WCOREDUMP(self.exit_status):
reason = "Segmentation fault"
elif os.WIFSTOPPED(self.exit_status):
reason = "Stopped with signal " + str(
os.WTERMSIG(self.exit_status))
elif os.WIFSIGNALED(self.exit_status):
reason = "Terminated with signal " + str(
os.WTERMSIG(self.exit_status))
elif os.WIFEXITED(self.exit_status):
reason = "Exit with code - " + str(
os.WEXITSTATUS(self.exit_status))
else:
reason = default_reason
else:
reason = default_reason
outdata = None
errdata = None
try:
if self._process is not None:
outdata, errdata = self._process.communicate(
timeout=POPEN_COMMUNICATE_TIMEOUT_FOR_ALREADY_DEAD_TASK)
except subprocess.TimeoutExpired:
self.process_monitor.log(
msg="Expired waiting for process {0} to terminate".format(
self._process.pid),
level=1)
msg = "[{0}] Crash. Exit code: {1}. Reason - {2}\n".format(
time.strftime("%I:%M.%S"),
self.exit_status if self.exit_status is not None else "<unknown>",
reason)
if errdata is not None:
msg += "STDERR:\n{0}\n".format(errdata.decode("ascii"))
if outdata is not None:
msg += "STDOUT:\n{0}\n".format(outdata.decode("ascii"))
self.process_monitor.last_synopsis = msg
def waitstatus_description(st):
if os.WIFEXITED(st):
es = os.WEXITSTATUS(st)
if es: return "exited with nonzero status %i" % es
else: return "exited"
elif os.WIFSIGNALED(st):
s = "died due to signal %i" % os.WTERMSIG(st)
if os.WCOREDUMP(st): s += " (core dumped)"
return s
else:
return "failed with unexpected wait status %i" % st
def parse_waitpid_result(status):
l = []
if os.WIFEXITED(status):
l.append("WIFEXITED({0})".format(os.WEXITSTATUS(status)))
if os.WIFSIGNALED(status):
l.append("WIFSIGNALED({0})".format(os.WTERMSIG(status)))
if os.WCOREDUMP(status):
l.append("WCOREDUMP")
if os.WIFSTOPPED(status):
l.append("WIFSTOPPED({0})".format(os.WSTOPSIG(status)))
return '|'.join(l)
def status_decode(status: int) -> Tuple[bool, str, TProcessItems]:
''' Decode status '''
if os.WIFSIGNALED(status):
return True, 'Signaled', \
(('Signal', os.WTERMSIG(status)), ('Coredump', os.WCOREDUMP(status)))
if os.WIFEXITED(status):
return True, 'Exited', (('Status', os.WEXITSTATUS(status)),)
if os.WIFCONTINUED(status):
return False, 'Continued', None
if os.WIFSTOPPED(status):
return False, 'Stopped', (('Signal', os.WSTOPSIG(status)),)
raise RuntimeError('Status unknown')
def exit_status_string(self):
"""Return a string representation of the command's exit status."""
statusString = None
if self.__status:
exitStatus = os.WEXITSTATUS(self.__status)
exitSignal = os.WIFSIGNALED(self.__status)
coreDump = os.WCOREDUMP(self.__status)
statusString = "exit code: %s | signal: %s | core %s" % \
(exitStatus, exitSignal, coreDump)
return (statusString)
def status_msg(status):
"""Given 'status', which is a process status in the form reported by
waitpid(2) and returned by process_status(), returns a string describing
how the process terminated."""
if os.WIFEXITED(status):
s = "exit status %d" % os.WEXITSTATUS(status)
elif os.WIFSIGNALED(status):
s = _signal_status_msg("killed", os.WTERMSIG(status))
elif os.WIFSTOPPED(status):
s = _signal_status_msg("stopped", os.WSTOPSIG(status))
else:
s = "terminated abnormally (%x)" % status
if os.WCOREDUMP(status):
s += ", core dumped"
return s
def statusfmt(status):
"""
Format an exit status as text.
"""
if status == 0:
msg = 'exited ok'
elif os.WIFSIGNALED(status):
msg = 'died on ' + signame(os.WTERMSIG(status))
elif os.WIFEXITED(status) and os.WEXITSTATUS(status) > 0:
msg = 'exited ' + str(os.WEXITSTATUS(status))
else:
msg = 'unknown exit code 0x%04x' % (status, )
if os.WCOREDUMP(status):
msg += ' (core dumped)'
return msg
def wait_for_active_job(signal_to_send=None):
"""
Wait for the active job to finish, to be killed by SIGINT, or to be
suspended by ctrl-z.
"""
_clear_dead_jobs()
act = builtins.__xonsh_active_job__
if act is None:
return
job = builtins.__xonsh_all_jobs__[act]
obj = job['obj']
if job['bg'] and job['status'] == 'running':
return
pgrp = job['pgrp']
# give the terminal over to the fg process
_give_terminal_to(pgrp)
# if necessary, send the specified signal to this process
# (this hook was added because vim, emacs, etc, seem to need to have
# the terminal when they receive SIGCONT from the "fg" command)
if signal_to_send is not None:
if signal_to_send == signal.SIGCONT:
job['status'] = 'running'
os.kill(obj.pid, signal_to_send)
if job['bg']:
_give_terminal_to(_shell_pgrp)
return
_, wcode = os.waitpid(obj.pid, os.WUNTRACED)
if os.WIFSTOPPED(wcode):
job['bg'] = True
job['status'] = 'stopped'
print() # get a newline because ^Z will have been printed
print_one_job(act)
elif os.WIFSIGNALED(wcode):
print() # get a newline because ^C will have been printed
obj.signal = (os.WTERMSIG(wcode), os.WCOREDUMP(wcode))
obj.returncode = None
else:
obj.returncode = os.WEXITSTATUS(wcode)
obj.signal = None
if obj.poll() is not None:
builtins.__xonsh_active_job__ = None
_give_terminal_to(_shell_pgrp) # give terminal back to the shell
def get_sigchlds():
try:
while True:
(pid, status) = os.waitpid(-1, os.WUNTRACED | os.WCONTINUED | os.WNOHANG)
if pid == 0:
return
res = {
"ssi_signo": 0, # Signal number
"ssi_errno": 0, # Error number (unused)
"ssi_code": 0, # Signal code
"ssi_pid": 0, # PID of sender
"ssi_uid": 0, # Real UID of sender
"ssi_fd": 0, # File descriptor (SIGIO)
"ssi_tid": 0, # Kernel timer ID (POSIX timers)
"ssi_band": 0, # Band event (SIGIO)
"ssi_overrun": 0, # POSIX timer overrun count
"ssi_trapno": 0, # Trap number that caused signal
"ssi_status": 0, # Exit status or signal (SIGCHLD)
"ssi_int": 0, # Integer sent by sigqueue(3)
"ssi_ptr": 0, # Pointer sent by sigqueue(3)
"ssi_utime": 0, # User CPU time consumed (SIGCHLD)
"ssi_stime": 0, # System CPU time consumed (SIGCHLD)
"ssi_addr": 0, # Address that generated signal (for hardware-generated signals)
}
res["ssi_signo"] = signal.SIGCHLD
res["ssi_pid"] = pid
if os.WIFEXITED(status):
res["ssi_code"] = CLD_EXITED
res["ssi_status"] = os.WEXITSTATUS(status)
elif os.WCOREDUMP(status):
res["ssi_code"] = CLD_DUMPED
res["ssi_status"] = os.WTERMSIG(status)
elif os.WIFCONTINUED(status):
res["ssi_code"] = CLD_CONTINUED
elif os.WIFSTOPPED(status):
res["ssi_code"] = CLD_STOPPED
res["ssi_status"] = os.WSTOPSIG(status)
elif os.WIFSIGNALED(status):
res["ssi_code"] = CLD_KILLED
res["ssi_status"] = os.WTERMSIG(status)
yield res
except OSError:
return
def __sig_child_handler(self, signum, frame):
# Our child exits with sig 9 when all is good... so map that to 0
try:
status = None
sig = None
core = False
self.logger.debug("Running children: %s" % self.executor_pids)
self.logger.debug("Got signal %s" % signum)
pid, ret = os.wait()
msg = "Child %s: wait returned code %s which means:" % (pid, ret)
if os.WIFSIGNALED(ret):
sig = os.WTERMSIG(ret)
msg += " signalled %s" % sig
if os.WIFEXITED(ret):
status = os.WEXITSTATUS(ret)
msg += " exited %s" % status
if os.WIFSTOPPED(ret):
msg += " stopped %s" % os.WSTOPSIG(ret)
if os.WCOREDUMP(ret):
core = True
msg += " core dumped"
if os.WIFCONTINUED(ret):
msg += " contunied"
self.logger.debug(msg)
if pid in self.executor_pids:
self.executor_pids.remove(pid)
self.executor_rets.append((status, sig, core))
else:
self.logger.error("Pid %s is not a child" % pid)
ret = 0
if len(self.executor_pids) == 0:
self.logger.trace("Statuses of all executors: %s" %
self.executor_rets)
for st, sg, co in self.executor_rets:
if st is not None and st != 0:
ret = st
if co:
ret = 1
self.logger.debug("Exit with code %s" % ret)
sys.exit(ret)
except Exception, ex:
self.logger.error("Error waiting for child process: %s" % ex)
def _waitChildToDieAndScheduleNew(self, signal=None, frame=None):
"""STEP 2 (parent): Child told us via SIGCHLD that we can spawn new
child
"""
if self.isChild():
# Ignore grandchildren
return
try:
# Acknowledge dead child
pid, exit_status = os.wait()
if pid != self.child_pid:
# Ignore unknown children
return
exit_flags = []
if os.WCOREDUMP(exit_status):
exit_flags.append("core dumped")
if os.WIFSIGNALED(exit_status):
code = os.WTERMSIG(exit_status)
exit_flags.append("terminated by signal %d" % code)
if os.WIFEXITED(exit_status):
code = os.WEXITSTATUS(exit_status)
exit_flags.append("exited with code %d" % code)
if exit_status == 0:
print(WAIT("Fork loop terminated child process %d" % pid))
elif exit_flags:
print(
ERROR("Forked child process %d %s" %
(pid, ", ".join(exit_flags))))
else:
print(
ERROR("Forked child process %d exited with code %s" %
(pid, exit_status)))
except OSError:
# OSError: [Errno 10] No child processes
pass
# Schedule new
self._scheduleFork()
def status_code(status):
'''
Decode child process exit code.
status is the exist status indication from os.waitpid(pid,0)[1]
'''
if os.WIFSIGNALED(status): # process exited due to a signal
# get the signal which caused the process to exit: make it negative to
# distinguish from exit(2) call
return -os.WTERMSIG(status)
elif os.WIFEXITED(status): # process exited using exit(2) system call
# get the integer parameter to exit(2) call
return os.WEXITSTATUS(status)
elif os.WIFSTOPPED(status) or os.WIFCONTINUED(status):
raise RuntimeError("Child stopped or continued?")
elif os.WCOREDUMP(status):
raise RuntimeError("Child core dump!")
else:
raise RuntimeError("Unknown child return status!")
def _monitor_daemon(daemon_pid):
# XXX should log daemon's stderr output at startup time
# XXX should use setproctitle module if available
last_restart = None
while True:
retval, status = _waitpid(daemon_pid, 0)
if retval < 0:
sys.stderr.write("waitpid failed\n")
sys.exit(1)
elif retval == daemon_pid:
status_msg = ("pid %d died, %s" %
(daemon_pid, ovs.process.status_msg(status)))
if _should_restart(status):
if sys.platform != 'win32' and os.WCOREDUMP(status):
# Disable further core dumps to save disk space.
try:
resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
except resource.error:
vlog.warn("failed to disable core dumps")
# Throttle restarts to no more than once every 10 seconds.
if (last_restart is not None
and ovs.timeval.msec() < last_restart + 10000):
vlog.warn("%s, waiting until 10 seconds since last "
"restart" % status_msg)
while True:
now = ovs.timeval.msec()
wakeup = last_restart + 10000
if now > wakeup:
break
sys.stdout.write("sleep %f\n" %
((wakeup - now) / 1000.0))
time.sleep((wakeup - now) / 1000.0)
last_restart = ovs.timeval.msec()
vlog.err("%s, restarting" % status_msg)
daemon_pid = _fork_and_wait_for_startup()
if not daemon_pid:
break
else:
vlog.info("%s, exiting" % status_msg)
sys.exit(0)
def post_send(self):
"""
This routine is called after the fuzzer transmits a test case and returns the status of the target.
@rtype: bool
@return: Return True if the target is still active, False otherwise.
"""
# TODO: Fix this ruby-coap-server hack.
# Apparently the rails (or rack?) framework takes a while to die, maybe the app dies but the framework is still logging or cleaning up something.
if 'david' in self.start_commands[0]:
time.sleep(0.4)
if not self.dbg.is_alive():
exit_status = self.dbg.get_exit_status()
rec_file = open(self.crash_bin, 'a')
if os.WCOREDUMP(exit_status):
reason = 'Segmentation fault'
elif os.WIFSTOPPED(exit_status):
reason = 'Stopped with signal ' + str(os.WTERMSIG(exit_status))
elif os.WIFSIGNALED(exit_status):
reason = 'Terminated with signal ' + str(os.WTERMSIG(exit_status))
elif os.WIFEXITED(exit_status):
reason = 'Exit with code - ' + str(os.WEXITSTATUS(exit_status))
else:
reason = 'Process died for unknown reason'
self.last_synopsis = '[%s] Crash : Test - %d Reason - %s\n' % (
time.strftime("%I:%M.%S"),
self.test_number,
reason
)
rec_file.write(self.last_synopsis)
rec_file.close()
if self.coredump_dir is not None:
dest = os.path.join( self.coredump_dir, "TC_%s.dump" % str(self.test_number) )
src = self._get_coredump_path()
if src is not None:
self.log("moving core dump %s -> %s" % (src, dest))
os.rename(src, dest)
return self.dbg.is_alive()
def convertReturnCodeToExitStatusMessage(rc):
exitstatusmessage = ""
if not isinstance(rc, int):
exitstatusmessage = "None"
elif os.WIFSIGNALED(rc):
signum = os.WTERMSIG(rc)
exitstatusmessage = "signal %d %s" % (signum, getSignalName(signum))
elif os.WIFEXITED(rc):
exitstatus = os.WEXITSTATUS(rc)
if exitstatus == 0:
exitstatusmessage = 'NORMAL'
else:
exitstatusmessage = 'ABNORMAL ' + str(exitstatus)
if isinstance(rc, int) and os.WCOREDUMP(rc):
exitstatusmessage += " dumped core"
return exitstatusmessage.strip()
def wait(self):
"""Call os.waitpid to status of dead processes.
"""
while True:
try:
pid, status = os.waitpid(-1, os.WNOHANG)
except OSError: # there are no child processes
break
# this is how waitpid + WNOHANG reports things are running
# but not yet dead
if pid == 0:
break
signum = 0
core_dump = False
exit_status = None
if os.WIFEXITED(status):
exit_status = os.WEXITSTATUS(status)
elif os.WIFSIGNALED(status):
signum = os.WTERMSIG(status)
if os.WCOREDUMP(status):
core_dump = True
exit_status = 128 + signum
if exit_status is None:
_logger.info("pid %s died but had no status", pid)
break
if signum:
_logger.info(
"pid %s died with status %s and signal %s; coredump=%s",
pid, exit_status, signum, core_dump)
else:
_logger.info("pid %s died with status %s", pid, exit_status)
for each in self.children.itervalues():
if each.pid == pid:
_logger.info("task %s: dead pid %s matches", each.label,
pid)
each.exit_status = exit_status
each.core_dump = core_dump
each.signum = signum
def post_send(self):
"""
This routine is called after the fuzzer transmits a test case and returns the status of the target.
@rtype: bool
@return: Return True if the target is still active, False otherwise.
"""
if not self.dbg.is_alive():
exit_status = self.dbg.get_exit_status()
rec_file = open(self.crash_bin, 'a')
if os.WCOREDUMP(exit_status):
reason = 'Segmentation fault'
elif os.WIFSTOPPED(exit_status):
reason = 'Stopped with signal ' + str(os.WTERMSIG(exit_status))
elif os.WIFSIGNALED(exit_status):
reason = 'Terminated with signal ' + str(os.WTERMSIG(exit_status))
elif os.WIFEXITED(exit_status):
reason = 'Exit with code - ' + str(os.WEXITSTATUS(exit_status))
else:
reason = 'Process died for unknown reason'
self.last_synopsis = '[%s] Crash : Test - %d Reason - %s\n' % (
time.strftime("%I:%M.%S"),
self.test_number,
reason
)
rec_file.write(self.last_synopsis)
rec_file.close()
if self.coredump_dir is not None:
dest = os.path.join(self.coredump_dir, str(self.test_number))
src = self._get_coredump_path()
if src is not None:
self.log("moving core dump %s -> %s" % (src, dest))
os.rename(src, dest)
return self.dbg.is_alive()
def __init__(self, exitcode, message=''):
"""exitcode is the exit status of a command, message is a
description which will be prepended in the str() of this."""
self.exitcode = exitcode
self.message = message
self.exitstatus = None
self.exited = None
self.killedbysignalnum = None
self.killedbysignal = None
self.stoppedbysignalnum = None
self.stoppedbysignal = None
self.coredumped = os.WCOREDUMP(exitcode)
if os.WIFEXITED(exitcode):
self.exited = True
self.exitstatus = os.WEXITSTATUS(exitcode)
if os.WIFSIGNALED(exitcode):
self.killedbysignalnum = os.WTERMSIG(exitcode)
self.killedbysignal = signum_to_name(self.killedbysignalnum)
if os.WIFSTOPPED(exitcode):
self.stoppedbysignalnum = os.WSTOPSIG(self.exitcode)
self.stoppedbysignal = signum_to_name(self.stoppedbysignalnum)
