Re: [PATCH glibc] Linux: Include <linux/sockios.h> in <bits/socket.h> under __USE_MISC

[Szabolcs Nagy]

On 22/07/2019 14:44, Florian Weimer wrote:
> * Szabolcs Nagy:
> 
>> (note: in musl these ioctl macros are in sys/ioctl.h
>> which is not a posix header so namespace rules are
>> less strict than for sys/socket.h and users tend to
>> include it for ioctl())
> 
> <sys/ioctl.h> can be confusing because some of the constants may depend
> on types that aren't declared by including the header.  This makes their
> macros unusable.  Defining ioctl constants in headers which also provide
> the matching types avoids that problem at least, also it can introduce
> namespace issues.

yeah, the way we deal with that is we hard code the numbers
since the size of struct is abi, they cannot change.