From: Anthony Martin <ality@pbrane.org>
To: 9front@9front.org
Subject: [9front] Re: [PATCH] kernel: disallow executing from #| or #d
Date: Tue, 10 May 2022 13:52:20 -0700 [thread overview]
Message-ID: <YnrQhMox4b9ncElU@alice> (raw)
In-Reply-To: <28db6450-6d7c-977f-aaff-62f152e79968@posixcafe.org>
Jacob Moody <moody@mail.posixcafe.org> once said:
> I believe this would also work for binaries
> if the writer could predict what parts of the binary
> the kernel will want to read. I am inclined to
> block this behavior but would be curious what others
> think. Included is a patch to error on OEXEC opens
> in devdup and devpipe.
OREAD and OEXEC are essentially the same thing on
Plan 9. If you can open and read a file, you can always
just copy the contents to a new file that you own and
change the mode. Unix retains the illusion.
Cheers,
Anthony
prev parent reply other threads:[~2022-05-10 20:54 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 6:40 [9front] " Jacob Moody
2022-05-10 14:40 ` ori
2022-05-10 16:34 ` Jacob Moody
2022-05-10 19:59 ` Amavect
2022-05-10 22:47 ` Jacob Moody
2022-05-11 4:21 ` Amavect
2022-05-11 6:31 ` Jacob Moody
2022-05-11 16:32 ` Amavect
2022-05-11 16:50 ` Jacob Moody
2022-05-15 2:43 ` Amavect
2022-05-15 15:26 ` Amavect
2022-05-15 16:28 ` Jacob Moody
2022-05-10 20:52 ` Anthony Martin [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YnrQhMox4b9ncElU@alice \
--to=ality@pbrane.org \
--cc=9front@9front.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).