linux-kernel - Re: JIT emulator needs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 08 Jun 2007 09:35:59 -0700
From:	Nicholas Miell <nmiell@...cast.net>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Albert Cahalan <acahalan@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: JIT emulator needs

On Fri, 2007-06-08 at 12:10 +0100, Alan Cox wrote:
> > e. mremap() flag to get a read/write mapping of a read/exec one
> > f. mremap() flag to get a read/exec mapping of a read/write one
> > g. mremap() flag to make the 5th arg (new addr) be the upper limit
> 
> This is all mprotect and munmap.

I think he's asking for a way to copy an existing mapping, which does
sound genuinely useful. (i.e. mremap(ptr, size, size, MREMAP_COPY), with
no need to mess with files to get multiple mappings of the same region)

-- 
Nicholas Miell <nmiell@...cast.net>

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/