def pass_on_signals(pid): from os import waitpid, WIFSTOPPED, WSTOPSIG from sys import stderr while True: retpid, status = waitpid(pid, 0) assert WIFSTOPPED(status) signum = WSTOPSIG(status) print >>stderr, "Passing signal to tracee:", signum ptrace_cont(pid, signum)
def execute(self, *args):
process = Popen4([self.facility.path] + self.facility.args +
list(args))
timers = [
Timer(time, self.kill, [process.pid, signal])
for time, signal in self.facility.wait.iteritems()
]
for timer in timers:
timer.start()
status = process.wait()
for timer in timers:
# No penalty, btw, for cancelling a dead timer
if timer.isAlive():
timer.cancel()
process.tochild.close()
if __debug__:
while True:
line = process.fromchild.readline()
if line:
syslog(line)
else:
break
process.fromchild.close()
command = basename(self.facility.path)
if WIFEXITED(status):
exit_status = WEXITSTATUS(status)
if exit_status != EX_OK:
raise ExecutionError(
EX_SOFTWARE, '`%(command)s\' exited with \
error-code %(exit_status)d' % {
'command': command,
'exit_status': exit_status
})
elif WIFSIGNALED(status):
raise ExecutionError(
EX_SOFTWARE, '`%(command)s\' terminated \
with signal %(signal)d' % {
'command': command,
'signal': WTERMSIG(status)
})
elif WIFSTOPPED(status):
raise ExecutionError(
EX_SOFTWARE, '`%(command)s\' stopped with \
signal %(signal)d' % {
'command': command,
'signal': WSTOPSIG(status)
})
else:
# Failsafe: timers should have killed the process by this point, or
# it should have ended naturally.
kill(process.pid, SIGKILL)
raise ExecutionError(
EX_SOFTWARE, 'Failed timer on `%(command)s\'; \
terminating the process extraordinarily.' % {'command': command})
def SimpleRegistration(self):
version = GetSystemVersion()
if version == 6:
self.clustername = self.clustername + version
exit_status = system(
'subscription-manager register --org={} --activationkey={}-KEY {} &> /dev/null'
.format(self.organization, self.clustername, self.force))
if WSTOPSIG(exit_status) == 64:
wait.Info('System already registered, use --force to override')
return exit_status
def wait_for_tracee_stop(pid): from os import waitpid, WIFSTOPPED, WSTOPSIG from signal import SIGSTOP from sys import stderr while True: retpid, status = waitpid(pid, 0) assert retpid == pid assert WIFSTOPPED(status) signum = WSTOPSIG(status) if signum == SIGSTOP: break else: print >>stderr, "Passing signal to tracee:", signum ptrace_cont(pid, signum)
def formatProcessStatus(status, title="Process"):
if WIFSTOPPED(status):
signum = WSTOPSIG(status)
return "%s stopped by signal %s" % (title, signalName(signum))
if WIFSIGNALED(status):
signum = WTERMSIG(status)
return "%s killed by signal %s" % (title, signalName(signum))
if not WIFEXITED(status):
raise ValueError("Invalid status: %r" % status)
exitcode = WEXITSTATUS(status)
if exitcode:
return "%s exited with code %s" % (title, exitcode)
else:
return "%s exited normally" % title
def formatProcessStatus(status, title="Process"):
"""
Format a process status (integer) as a string.
"""
if WIFSTOPPED(status):
signum = WSTOPSIG(status)
text = "%s stopped by signal %s" % (title, signalName(signum))
elif WIFSIGNALED(status):
signum = WTERMSIG(status)
text = "%s killed by signal %s" % (title, signalName(signum))
else:
if not WIFEXITED(status):
raise ValueError("Invalid status: %r" % status)
exitcode = WEXITSTATUS(status)
if exitcode:
text = "%s exited with code %s" % (title, exitcode)
else:
text = "%s exited normally" % title
if WCOREDUMP(status):
text += " (core dumped)"
return text
def _event_handle_process_signal(self, status, pid):
signum = WSTOPSIG(status)
logger.debug('signum:%d-%s, pid=%d' %
(signum & 0x7f, signal_name(signum & 0x7f), pid))
dr6 = self.get_debug_regs(6)
logger.debug('dr6=' + hex(dr6))
dr7 = self.get_debug_regs(7)
logger.debug('dr7=' + hex(dr7))
self.regs = self.get_regs()
dr6 = self.get_debug_regs(6)
dr7 = self.get_debug_regs(7)
if CPU_64BITS:
logger.debug('rip=%08x' % self.regs.rip)
else:
logger.debug('eip=%08x' % self.regs.eip)
if signum == SIGTRAP:
if (0x80 | signum) == 0x80:
is_sys_call = True
else:
is_sys_call = False
return self._event_handle_sigtrap(pid, is_sys_call)
if signum in self.callbacks.keys():
return self.callbacks[signum](self)
# ret
if self.signal_handle_mode.has_key(signum):
ignore = self.signal_handle_mode[signum]
if ignore:
if signum == SIGSEGV:
# self.print_vmmap()
self.generate_gcore(pid)
return 0
return signum
def processStatus(self, status):
# Process exited?
if WIFEXITED(status):
code = WEXITSTATUS(status)
event = self.processExited(code)
# Process killed by a signal?
elif WIFSIGNALED(status):
signum = WTERMSIG(status)
event = self.processKilled(signum)
# Invalid process status?
elif not WIFSTOPPED(status):
raise ProcessError(self, "Unknown process status: %r" % status)
# Ptrace event?
elif HAS_PTRACE_EVENTS and WPTRACEEVENT(status):
event = WPTRACEEVENT(status)
event = self.ptraceEvent(event)
else:
signum = WSTOPSIG(status)
event = self.processSignal(signum)
return event
