class SyscallState(object):
def __init__(self, process):
self.process = process
self.ignore_exec_trap = True
self.ignore_callback = None
self.clear()
def event(self, options):
if self.next_event == "exit":
return self.exit()
else:
return self.enter(options)
def enter(self, options):
# syscall enter
regs = self.process.getregs()
self.syscall = PtraceSyscall(self.process, options, regs)
self.name = self.syscall.name
if (not self.ignore_callback) \
or (not self.ignore_callback(self.syscall)):
self.syscall.enter(regs)
else:
self.syscall = None
self.next_event = "exit"
return self.syscall
def exit(self):
if self.syscall:
self.syscall.exit()
if self.ignore_exec_trap \
and self.name == "execve" \
and not self.process.debugger.trace_exec:
# Ignore the SIGTRAP after exec() syscall exit
self.process.syscall()
self.process.waitSignals(SIGTRAP)
syscall = self.syscall
self.clear()
return syscall
def clear(self):
self.syscall = None
self.name = None
self.next_event = "enter"
class SyscallState(object):
def __init__(self, process):
self.process = process
self.ignore_exec_trap = True
self.ignore_callback = None
self.clear()
def event(self, options):
if self.next_event == "exit":
return self.exit()
else:
return self.enter(options)
def enter(self, options):
# syscall enter
regs = self.process.getregs()
self.syscall = PtraceSyscall(self.process, options, regs)
self.name = self.syscall.name
if (not self.ignore_callback) \
or (not self.ignore_callback(self.syscall)):
self.syscall.enter(regs)
else:
self.syscall = None
self.next_event = "exit"
return self.syscall
def exit(self):
if self.syscall:
self.syscall.exit()
if self.ignore_exec_trap \
and self.name == "execve" \
and not self.process.debugger.trace_exec:
# Ignore the SIGTRAP after exec() syscall exit
self.process.syscall()
self.process.waitSyscall()
syscall = self.syscall
self.clear()
return syscall
def clear(self):
self.syscall = None
self.name = None
self.next_event = "enter"