[Bug libc/16919] recvmsg standard compliance

["joseph at codesourcery dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16919

--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Wed, 7 May 2014, sickmind at i2pmail dot org wrote:

> Thanks for the tip. I should create appropriate __libc_{sendmsg,recvmsg}
> functions for that, am I right?

Exactly what's appropriate depends on the details of the interfaces - what 
libc interfaces use these structures as inputs, outputs or both, and what 
kernel interfaces libc uses with them (and again, whether as inputs, 
outputs or both), and how the kernel handles the high bits in question.

The patch submission (to libc-alpha, see the contribution checklist on the 
wiki) will need to contain a detailed analysis of those issues that 
justifies why the changes in the patch don't cause any problems for 
existing binaries or cause the kernel interface to be used incorrectly.  
If you write up that analysis before implementing the patch, it may help 
people advise on what should or should not be in the patch.

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