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Re: [PATCH] kern: fix mig_strncpy

From: Justus Winter
Subject: Re: [PATCH] kern: fix mig_strncpy
Date: Sat, 22 Feb 2014 16:17:13 +0100
User-agent: alot/0.3.4

Quoting Samuel Thibault (2014-02-22 15:37:29)
> Justus Winter, le Sat 22 Feb 2014 11:25:14 +0100, a écrit :
> > * kern/ipc_mig.c (mig_strncpy): Do not zero-terminate the destination
> > string.  Return length of destination string.
> Well, that calls for some rationale :)
> I guess this is related with the other, MIG change?  I.e. that this
> modified version of kernel mig_strncpy depends on the fixed MIG
> behavior?

No.  It's just that the version in mach did not return anything (and
thus I believe that sending such a string from the kernel would never
have worked).

The change in semantics is to make it behave like the version in the
glibc (and like strncpy in general).


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