LinuxARMLinux指纹门禁系统.pptint ret = 0; unsigned char tmp; if(_IOC_TYPE(cmd) != FPS200_IOC_MAGIC) return -ENOTTY; if(_IOC_NR(cmd) > FPS200_IOC_MAXNR) return -ENOTTY; if (_IOC_DIR(cmd) & _IOC_...
LinuxARMLinux指纹门禁系统.pptint ret = 0; unsigned char tmp; if(_IOC_TYPE(cmd) != FPS200_IOC_MAGIC) return -ENOTTY; if(_IOC_NR(cmd) > FPS200_IOC_MAXNR) return -ENOTTY; if (_IOC_DIR(cmd) & _IOC_...