Unlike the corresponding system call DeviceIOControl, the input parameter list in ioctl is not fixed.

与对应的系统调用DeviceIOControl不同，ioctl的输入参数列表并不固定。

youdao

Currently, file system freezing is achieved through an ioctl with an argument of FIFREEZE or FITHAW.

目前，文件系统冻结是通过具有参数FIFREEZE或FITHAW的ioctl来实现的。

youdao

Options available for performing ioctl are different in Solaris and Linux. For example, to get the resource usage, you can pass the option PIOCUSAGE to the ioctl system call

执行 ioctl 可以使用的选项在 Solaris 和 Linux 中是不同的。

youdao