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From: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To: Bruno Meneguele <bmeneg@redhat.com>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	pmladek@suse.com, sergey.senozhatsky@gmail.com,
	rostedt@goodmis.org
Subject: Re: [PATCH] kernel/printk: add kmsg SEEK_CUR handling
Date: Fri, 13 Mar 2020 16:34:25 +0900	[thread overview]
Message-ID: <20200313073425.GA219881@google.com> (raw)
In-Reply-To: <20200313003533.2203429-1-bmeneg@redhat.com>

On (20/03/12 21:35), Bruno Meneguele wrote:
> 
> Userspace libraries, e.g. glibc's dprintf(), expect the default return value
> for invalid seek situations: -ESPIPE, but when the IO was over /dev/kmsg the
> current state of kernel code was returning the generic case of an -EINVAL.
> Hence, userspace programs were not behaving as expected or documented.
> 

Hmm. I don't think I see ESPIPE in documentation [0], [1], [2]

[0] https://pubs.opengroup.org/onlinepubs/9699919799/functions/fprintf.html
[1] http://man7.org/linux/man-pages/man3/dprintf.3p.html
[2] http://man7.org/linux/man-pages/man3/fprintf.3p.html

	-ss

  parent reply	other threads:[~2020-03-13  7:34 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-13  0:35 Bruno Meneguele
2020-03-13  7:22 ` Greg KH
2020-03-13 10:44   ` Bruno Meneguele
2020-03-13  7:34 ` Sergey Senozhatsky [this message]
2020-03-13 11:02   ` Bruno Meneguele
2020-03-13 11:06     ` David Laight
2020-03-13 13:06       ` Bruno Meneguele
2020-03-17  2:03     ` Sergey Senozhatsky
2020-03-17  8:53       ` Bruno Meneguele
2020-03-19 10:33         ` Bruno Meneguele

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