process.py 文件源码

def readBytes(self, address, size):
            debug("Read %s bytes at %s" % (size, formatAddress(address)))

            if not self.read_mem_file:
                filename = '/proc/%u/mem' % self.pid
                try:
                    self.read_mem_file = open(filename, 'rb', 0)
                except IOError, err:
                    message = "Unable to open %s: fallback to ptrace implementation" % filename
                    if err.errno != EACCES:
                        error(message)
                    else:
                        info(message)
                    self.readBytes = self._readBytes
                    return self.readBytes(address, size)

            try:
                mem = self.read_mem_file
                mem.seek(address)
                return mem.read(size)
            except (IOError, ValueError), err:
                raise ProcessError(self, "readBytes(%s, %s) error: %s" % (
                    formatAddress(address), size, err))