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
next prev 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 [PATCH] kernel/printk: add kmsg SEEK_CUR handling 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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