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Date:      Fri, 07 Sep 2012 12:48:19 -0600
From:      Ian Lepore <freebsd@damnhippie.dyndns.org>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        freebsd-current@freebsd.org, Svatopluk, Kraus <onwahe@gmail.com>
Subject:   Re: [patch] mmap() MAP_TEXT implementation (to use for shared libraries)
Message-ID:  <1347043699.1143.2.camel@revolution.hippie.lan>
In-Reply-To: <20120907184120.GD33100@deviant.kiev.zoral.com.ua>
References:  <CAFHCsPX6HrCXHA%2BS31Dz9QP8eiwbo21Vzju4K4paohciu2vPTw@mail.gmail.com> <201209071221.37409.jhb@freebsd.org> <20120907164218.GB33100@deviant.kiev.zoral.com.ua> <201209071405.28831.jhb@freebsd.org> <20120907184120.GD33100@deviant.kiev.zoral.com.ua>

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On Fri, 2012-09-07 at 21:41 +0300, Konstantin Belousov wrote:
> After a second thought, I do not like your proposal as well. +x is set for
> shebang scripts, and allowing PROT_EXEC to set VV_TEXT for them means
> that such scripts are subject for write denial.

You say that like it's a bad thing.  I hate it when I accidentally edit
a script that's running and then the script fails because I did.  I
would be much happier if it acted just like any other executable and
prevented modification while it's running.

-- Ian





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