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Subject: Re: [PATCH v7] getrandom system call wrapper [BZ #17252]
To: Florian Weimer <fweimer@redhat.com>, Zack Weinberg <zackw@panix.com>
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Cc: Torvald Riegel <triegel@redhat.com>, Szabolcs Nagy
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From: Paul Eggert <eggert@cs.ucla.edu>
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Date: Tue, 29 Nov 2016 19:37:00 -0000
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On 11/29/2016 10:11 AM, Florian Weimer wrote:
> How are you going to avoid interposing the implementation in glibc? 

That will depend on how glibc is implemented. Simplest might be to use 
compile-time interposition, which is common in Gnulib. E.g., Gnulib 
would supply its own getentropy.h which does "#define getentropy 
rpl_getentropy", so that Gnulib-using applications always call 
rpl_getentropy from the linker's point of view. This sort of thing is OK 
for Gnulib, as it's not intended to be a separate library.