def _handle_read(self, e, a, pre):
print 'read', pre, a.a0
if not pre and a.a0 in self.fds:
print a.a0, a.a1, a.a2
buf = self.fds[a.a0].read(a.a2)
Child.from_event(e).write(a.a1, buf)
a.return_code = len(buf)
Child.from_event(e).modify_regs(a.syscall, a)
def _handle_read(self, e, a, pre):
print 'read', pre, a.a0
if not pre and a.a0 in self.fds:
print a.a0, a.a1, a.a2
buf = self.fds[a.a0].read(a.a2)
Child.from_event(e).write(a.a1, buf)
a.return_code = len(buf)
Child.from_event(e).modify_regs(a.syscall, a)
def _handle_open(self, e, a, pre):
if pre:
fname = Child.from_event(e).read_string(a.a0)
if fname in self.files:
fd = self.get_fd()
self.fds[fd] = self.files[fname]
self.event_to_fds[Child.from_event(e)] = fd
elif Child.from_event(e) in self.event_to_fds:
fd = self.event_to_fds.pop(Child.from_event(e))
a.return_code = fd
Child.from_event(e).modify_regs(a.syscall, a)
def _handle_open(self, e, a, pre):
if pre:
fname = Child.from_event(e).read_string(a.a0)
if fname in self.files:
fd = self.get_fd()
self.fds[fd] = self.files[fname]
self.event_to_fds[Child.from_event(e)] = fd
elif Child.from_event(e) in self.event_to_fds:
fd = self.event_to_fds.pop(Child.from_event(e))
a.return_code = fd
Child.from_event(e).modify_regs(a.syscall, a)
def _handle_write(self, e, a, pre):
c = Child.from_event(e)
if pre and a.a0 in (1, 2):
buf = c.read(a.a1, a.a2)
if buf:
c.write(a.a1, buf[::-1])