From: <rdq@metamail.co>
To: "'Martin Christian'" <martin.christian@secunet.com>,
<kernelnewbies@kernelnewbies.org>
Subject: RE: debugfs question ...
Date: Wed, 1 May 2019 13:06:58 +0100 [thread overview]
Message-ID: <013b01d50016$623e2ca0$26ba85e0$@metamail.co> (raw)
In-Reply-To: <531b212a-fb20-e2f2-f052-66e37fc5ba68@secunet.com>
> my guess is your are not returning EOF (= 0). User space expects a return
> value of 0 (EOF) to terminate reading. But your code will always return
> sizeof("Hello world\n"). A fix would be to not only increment ppos, but also
> check if it's already behind your data.
>
> Regards,
>
> Martin
Thank you, Martin, help much appreciated. It's a bit of a mystery but neither works for me. More detail in my reply to Greg KH.
_______________________________________________
Kernelnewbies mailing list
Kernelnewbies@kernelnewbies.org
https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
prev parent reply other threads:[~2019-05-01 12:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-30 11:45 debugfs question rdq
2019-04-30 12:07 ` Greg KH
[not found] ` <014a01d50028$ce098580$6a1c9080$@metamail.co>
2019-05-01 14:35 ` 'Greg KH'
2019-04-30 12:11 ` Martin Christian
2019-05-01 12:06 ` rdq [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='013b01d50016$623e2ca0$26ba85e0$@metamail.co' \
--to=rdq@metamail.co \
--cc=kernelnewbies@kernelnewbies.org \
--cc=martin.christian@secunet.com \
/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).