Comments (2)
xairy
commented on June 9, 2024
Ensuring that 0 is passed to an ioctl that shouldn't take any argument seems to be a sane thing to do.
Using _IO* when defining ioctl numbers is just a convention. There's a lot of (especially legacy) ioctls that don't follow it at all. On top of that there are _IO() ("none" as you call them) ioctls that actually write to userspace or read from userspace.
Are those impossible to use from Rust? That seems weird.
Is there no way in Rust to explicitly provide all arguments to an ioctl?
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nickray
commented on June 9, 2024
Honestly I think that library is wrong (not to set the value explicitly to zero in case of "none"/_IO()) and you're right. Thanks for clarifying!
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