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Date:      Thu, 14 Nov 2019 00:46:40 +0200
From:      Konstantin Belousov <kostikbel@gmail.com>
To:        Brooks Davis <brooks@FreeBSD.org>
Cc:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r354694 - in head: lib/libc/gen sys/sys
Message-ID:  <20191113224640.GX2707@kib.kiev.ua>
In-Reply-To: <201911132151.xADLptvc074883@repo.freebsd.org>
References:  <201911132151.xADLptvc074883@repo.freebsd.org>

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On Wed, Nov 13, 2019 at 09:51:55PM +0000, Brooks Davis wrote:
> Author: brooks
> Date: Wed Nov 13 21:51:55 2019
> New Revision: 354694
> URL: https://svnweb.freebsd.org/changeset/base/354694
> 
> Log:
>   elf_aux_info: Add support for AT_EXECPATH.
>   
>   Reviewed by:	emaste, sef
>   MFC after:	3 days
>   Sponsored by:	DARPA, AFRL
>   Differential Revision:	https://reviews.freebsd.org/D22353
> 
> Modified:
>   head/lib/libc/gen/auxv.3
>   head/lib/libc/gen/auxv.c
>   head/sys/sys/param.h
> 
> Modified: head/lib/libc/gen/auxv.3
> ==============================================================================
> --- head/lib/libc/gen/auxv.3	Wed Nov 13 21:49:46 2019	(r354693)
> +++ head/lib/libc/gen/auxv.3	Wed Nov 13 21:51:55 2019	(r354694)
> @@ -24,7 +24,7 @@
>  .\"
>  .\" $FreeBSD$
>  .\"
> -.Dd April 25, 2019
> +.Dd November 13, 2019
>  .Dt ELF_AUX_INFO 3
>  .Os
>  .Sh NAME
> @@ -48,6 +48,10 @@ can be requested:
>  .Bl -tag -width AT_OSRELDATE
>  .It AT_CANARY
>  The canary value for SSP.
> +.It AT_EXECPATH
> +The path of executed program.
> +This will not be present if the process was initialized by
This is too strong statement.  The auxv element might be not present
if vn_fullpath(9) failed, otherwise we do provide the path.

> +.Xr fexecve 2 .



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