From: Eric Wong <normalperson@yhbt.net>
To: Florian Weimer <fweimer@redhat.com>
Cc: David Howells <dhowells@redhat.com>,
jlayton@redhat.com, libc-alpha@sourceware.org
Subject: Re: Can getaddrinfo() be extended to return the record TTL
Date: Tue, 06 Aug 2019 15:16:00 -0000 [thread overview]
Message-ID: <20190806151632.u454tetx762wrgzs@dcvr> (raw)
In-Reply-To: <87v9vfcwkm.fsf@oldenburg2.str.redhat.com>
Florian Weimer <fweimer@redhat.com> wrote:
> * David Howells:
> > If it's not possible to extend getaddrinfo() in this way, would it be possible
> > to provide a getaddrinfo2() that returns this information through an
> > additional parameter?
>
> That definitely would be a new ABI.
>
> New ABIs have a lead time of around three years before productization.
> Is this something you could work with?
Fwiw, gaicb has an "int __glibc_reserved[5]" field; so it's
probably possible to extend the already-glibc-specific getaddrinfo_a(3)
to return the TTL.
I was looking into getting the TTL the other week for something
else, but settled on using a dedicated thread to call
getaddrinfo(3) every few seconds and publishing updates to other
threads via URCU.
next prev parent reply other threads:[~2019-08-06 15:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 16:42 David Howells
2019-08-02 17:21 ` Florian Weimer
2019-08-06 15:16 ` Eric Wong [this message]
2019-08-07 13:35 ` Florian Weimer
2019-08-02 19:33 ` David Howells
2019-08-02 21:47 ` Carlos O'Donell
2020-04-14 14:15 ` Jeff Layton
2019-08-07 13:32 ` Florian Weimer
2020-04-14 13:42 ` David Howells
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=20190806151632.u454tetx762wrgzs@dcvr \
--to=normalperson@yhbt.net \
--cc=dhowells@redhat.com \
--cc=fweimer@redhat.com \
--cc=jlayton@redhat.com \
--cc=libc-alpha@sourceware.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).