From nobody Sat Oct 08 06:52:26 2022 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Mkwpl44Ltz4dhmV; Sat, 8 Oct 2022 06:52:31 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (turbocat.net [88.99.82.50]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4Mkwpl36MGz3GP5; Sat, 8 Oct 2022 06:52:31 +0000 (UTC) (envelope-from hps@selasky.org) Received: from [10.36.2.155] (unknown [178.232.223.95]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 4FA52260337; Sat, 8 Oct 2022 08:52:29 +0200 (CEST) Message-ID: <63603095-a092-6a6c-c78c-8dfb242514a1@selasky.org> Date: Sat, 8 Oct 2022 08:52:26 +0200 List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 Subject: Re: git: 1c2be25f6080 - main - Add extra EINVAL information about wrong block size to read(2)/write(2) To: Konstantin Belousov , Benedict Reuschling Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org References: <202210071139.297Bd4pq062191@gitrepo.freebsd.org> Content-Language: en-US From: Hans Petter Selasky In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Rspamd-Queue-Id: 4Mkwpl36MGz3GP5 X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-ThisMailContainsUnwantedMimeParts: N On 10/8/22 02:48, Konstantin Belousov wrote: > On Fri, Oct 07, 2022 at 11:39:04AM +0000, Benedict Reuschling wrote: >> The branch main has been updated by bcr (doc committer): >> >> URL: https://cgit.FreeBSD.org/src/commit/?id=1c2be25f6080ee63baeae55e45761e1310d1b756 >> >> commit 1c2be25f6080ee63baeae55e45761e1310d1b756 >> Author: Benedict Reuschling >> AuthorDate: 2022-10-07 11:32:37 +0000 >> Commit: Benedict Reuschling >> CommitDate: 2022-10-07 11:32:37 +0000 >> >> Add extra EINVAL information about wrong block size to read(2)/write(2) >> >> The read system call will return EINVAL if the current file offset is >> not a multiple of the block size. This also applies to write(2). Add an >> entry for EINVAL about this error to both man pages. >> >> PR: 91149 >> Event: Aberdeen Hackathon 2022 >> Differential Revision: https://reviews.freebsd.org/D24617 >> --- >> lib/libc/sys/read.2 | 4 +++- >> lib/libc/sys/write.2 | 4 +++- >> 2 files changed, 6 insertions(+), 2 deletions(-) >> >> diff --git a/lib/libc/sys/read.2 b/lib/libc/sys/read.2 >> index 8b58debd3fbb..28d085562af3 100644 >> --- a/lib/libc/sys/read.2 >> +++ b/lib/libc/sys/read.2 >> @@ -28,7 +28,7 @@ >> .\" @(#)read.2 8.4 (Berkeley) 2/26/94 >> .\" $FreeBSD$ >> .\" >> -.Dd June 4, 2020 >> +.Dd October 7, 2022 >> .Dt READ 2 >> .Os >> .Sh NAME >> @@ -250,6 +250,8 @@ The sum of the >> values in the >> .Fa iov >> array overflowed a 32-bit integer. >> +.It Bq Er EINVAL >> +The current file offset is not a multiple of the block size. >> .It Bq Er EFAULT >> Part of the >> .Fa iov >> diff --git a/lib/libc/sys/write.2 b/lib/libc/sys/write.2 >> index 937e95b53a14..048338ed4dee 100644 >> --- a/lib/libc/sys/write.2 >> +++ b/lib/libc/sys/write.2 >> @@ -28,7 +28,7 @@ >> .\" @(#)write.2 8.5 (Berkeley) 4/2/94 >> .\" $FreeBSD$ >> .\" >> -.Dd February 11, 2021 >> +.Dd October 7, 2022 >> .Dt WRITE 2 >> .Os >> .Sh NAME >> @@ -205,6 +205,8 @@ is greater than >> if the sysctl >> .Va debug.iosize_max_clamp >> is non-zero). >> +.It Bq Er EINVAL >> +The current file offset is not a multiple of the block size. > This is bogus. It does not. You can perfectly write at arbitrary regular > file offset. > If you have a 4K block size character device, geom doesn't support writing / reading 515 byte blocks .... The description is maybe not applicable for all EINVAL's returned. --HPS