From: DJ Delorie via Libc-alpha <libc-alpha@sourceware.org>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: libc-alpha@sourceware.org
Subject: Re: nsswitch: do not reload if "/" changes
Date: Mon, 18 Jan 2021 13:27:03 -0500 [thread overview]
Message-ID: <xn7doaw16w.fsf@greed.delorie.com> (raw)
In-Reply-To: <87eeiil8m8.fsf@igel.home> (message from Andreas Schwab on Mon, 18 Jan 2021 13:42:07 +0100)
Andreas Schwab <schwab@linux-m68k.org> writes:
> How does that interact with pivot_root?
If the initroot has an nsswitch.conf (I can't imagine why, but it
wouldn't surprise me if the initroot had a copy of emacs) then
pivot_root would lock that version, just like before. If the initroot
and the pivot root have different versions of nss modules, something has
gone horribly wrong building your distro.
Note that the pivot_root(8) man page says you should exec a chroot after
pivoting anyway, which resets nsswitch.conf. The pivot_root(2) man page
says that changes to the current process's / and pwd may or may not
change, and it's up to the calling process to deal with it.
Either way, I don't think we have to worry about it.
next prev parent reply other threads:[~2021-01-18 18:27 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-16 0:59 nsswitch: do not reload if "/" changes DJ Delorie via Libc-alpha
2021-01-16 10:52 ` Florian Weimer via Libc-alpha
2021-01-18 1:13 ` DJ Delorie via Libc-alpha
2021-01-18 10:47 ` Florian Weimer via Libc-alpha
2021-01-18 18:20 ` DJ Delorie via Libc-alpha
2021-01-19 16:37 ` Florian Weimer via Libc-alpha
2021-01-22 19:10 ` [v2] " DJ Delorie via Libc-alpha
2021-01-26 9:58 ` Florian Weimer via Libc-alpha
2021-01-26 16:19 ` DJ Delorie via Libc-alpha
2021-01-26 16:30 ` Florian Weimer via Libc-alpha
2021-01-26 16:47 ` DJ Delorie via Libc-alpha
2021-01-27 17:28 ` Carlos O'Donell via Libc-alpha
2021-01-27 18:44 ` DJ Delorie via Libc-alpha
2021-01-28 0:31 ` Joseph Myers
2021-01-28 0:34 ` DJ Delorie via Libc-alpha
2021-01-28 0:39 ` Joseph Myers
2021-01-28 1:15 ` DJ Delorie via Libc-alpha
2021-01-18 12:42 ` Andreas Schwab
2021-01-18 12:53 ` Florian Weimer via Libc-alpha
2021-01-18 18:27 ` DJ Delorie via Libc-alpha [this message]
2021-01-18 15:59 ` Carlos O'Donell via Libc-alpha
2021-01-18 16:53 ` Florian Weimer via Libc-alpha
2021-01-19 14:30 ` Carlos O'Donell via Libc-alpha
2021-01-19 14:40 ` Florian Weimer via Libc-alpha
2021-01-18 18:35 ` DJ Delorie via Libc-alpha
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
List information: https://www.gnu.org/software/libc/involved.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=xn7doaw16w.fsf@greed.delorie.com \
--to=libc-alpha@sourceware.org \
--cc=dj@redhat.com \
--cc=schwab@linux-m68k.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 read-only IMAP folder(s) and NNTP newsgroup(s).