9front - general discussion about 9front
 help / color / mirror / Atom feed
From: ori@eigenstate.org
To: 9front@9front.org
Subject: Re: [9front] Re: [PATCH] make exportfs give "standard" error for file does exist
Date: Mon, 24 Jul 2023 00:20:29 -0400	[thread overview]
Message-ID: <D1E53774598794A99B1C7464953523B8@eigenstate.org> (raw)
In-Reply-To: <ZL36XiBmFhTPbgEm@alice>

Quoth Anthony Martin <ality@pbrane.org>:
> Jacob Moody <moody@mail.posixcafe.org> once said:
> > The problem is that exportfs sends the errstr back from what
> > it gets from open(2). The kernel gives you back the path attempted
> > to be accessed in quotes prefixed to 'does not exist'.
> > Every fileserver using Enotexist would not fix exportfs causing
> > this issue with v9fs.
> 
> I understand. That's partly why I suggested sending a patch
> to lkml. They use memcmp on the errstr but they should be
> doing the equivalent of strstr (like Go's syscall package).
> 
> Cheers,
>   Anthony

note, the problem with strstr is that walking to a file named
'file does not exist' may confuse the caller; this is why I
would like to move to a convention where the "well known" error
is at a well known location.


  reply	other threads:[~2023-07-24  4:27 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-23 21:07 [9front] " Jacob Moody
2023-07-23 22:03 ` Stuart Morrow
2023-07-23 22:11   ` Jacob Moody
2023-07-23 22:24     ` Stuart Morrow
2023-07-24  0:19       ` Jacob Moody
2023-07-24 21:20         ` Stuart Morrow
2023-07-24 22:33           ` Jacob Moody
2023-07-24  0:07 ` Michael Forney
2023-07-24  0:56   ` Jacob Moody
2023-07-24  2:12   ` ori
2023-07-24  8:13     ` hiro
2023-07-24 23:37       ` Jacob Moody
2023-07-24 23:54         ` ori
2023-07-24  0:51 ` [9front] " Anthony Martin
2023-07-24  1:03   ` Jacob Moody
2023-07-24  4:13     ` Anthony Martin
2023-07-24  4:20       ` ori [this message]
2023-07-25  6:09         ` Anthony Martin
2023-07-25  8:26           ` hiro
2023-07-25 13:14           ` ori

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=D1E53774598794A99B1C7464953523B8@eigenstate.org \
    --to=ori@eigenstate.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).