public inbox for linux-fsdevel@vger.kernel.org
 help / color / mirror / Atom feed
From: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
To: Chuck Lever <cel@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
	<linux-fsdevel@vger.kernel.org>,
	linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
	linux-cifs@vger.kernel.org, <linux-nfs@vger.kernel.org>,
	linux-f2fs-devel@lists.sourceforge.net, linkinjeon@kernel.org,
	sj1557.seo@samsung.com, yuezhang.mo@sony.com,
	almaz.alexandrovich@paragon-software.com, slava@dubeyko.com,
	glaubitz@physik.fu-berlin.de, frank.li@vivo.com, tytso@mit.edu,
	adilger.kernel@dilger.ca, cem@kernel.org, sfrench@samba.org,
	pc@manguebit.org, ronniesahlberg@gmail.com,
	sprasad@microsoft.com, trondmy@kernel.org, anna@kernel.org,
	jaegeuk@kernel.org, chao@kernel.org, hansg@kernel.org,
	senozhatsky@chromium.org, Chuck Lever <chuck.lever@oracle.com>
Subject: Re: [PATCH v4 02/16] fat: Implement fileattr_get for case sensitivity
Date: Thu, 15 Jan 2026 17:58:49 +0900	[thread overview]
Message-ID: <874ionw8ty.fsf@mail.parknet.co.jp> (raw)
In-Reply-To: <20260114142900.3945054-3-cel@kernel.org>

Chuck Lever <cel@kernel.org> writes:

> +int fat_fileattr_get(struct dentry *dentry, struct file_kattr *fa)
> +{
> +	struct msdos_sb_info *sbi = MSDOS_SB(dentry->d_sb);
> +
> +	/*
> +	 * FAT filesystems are case-insensitive by default. MSDOS
> +	 * supports a 'nocase' mount option for case-sensitive behavior.
> +	 *
> +	 * VFAT long filename entries preserve case. Without VFAT, only
> +	 * uppercased 8.3 short names are stored.
> +	 */
> +	fa->case_insensitive = !sbi->options.nocase;
> +	fa->case_nonpreserving = !sbi->options.isvfat;
> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(fat_fileattr_get);

Hm, if "nocase" option is specified for msdos, it would be the case
preserving (ignores/breaks the spec though).

I.e. on msdos mount with "nocase" works like the following

    $ touch aAa.txT
    $ ls
    aAa.txT

Thanks.
-- 
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

  reply	other threads:[~2026-01-15  8:59 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-14 14:28 [PATCH v4 00/16] Exposing case folding behavior Chuck Lever
2026-01-14 14:28 ` [PATCH v4 01/16] fs: Add case sensitivity info to file_kattr Chuck Lever
2026-01-14 18:11   ` Jan Kara
2026-01-14 19:01     ` Chuck Lever
2026-01-14 20:01       ` Darrick J. Wong
2026-01-15  8:29         ` Christian Brauner
2026-01-14 14:28 ` [PATCH v4 02/16] fat: Implement fileattr_get for case sensitivity Chuck Lever
2026-01-15  8:58   ` OGAWA Hirofumi [this message]
2026-01-14 14:28 ` [PATCH v4 03/16] exfat: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 04/16] ntfs3: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 05/16] hfs: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 06/16] hfsplus: Report case sensitivity in fileattr_get Chuck Lever
2026-01-14 14:28 ` [PATCH v4 07/16] ext4: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 08/16] xfs: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 09/16] cifs: Implement fileattr_get for case sensitivity Chuck Lever
2026-01-14 14:28 ` [PATCH v4 10/16] nfs: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 11/16] f2fs: Add case sensitivity reporting to fileattr_get Chuck Lever
2026-01-14 14:28 ` [PATCH v4 12/16] vboxsf: Implement fileattr_get for case sensitivity Chuck Lever
2026-01-14 14:28 ` [PATCH v4 13/16] isofs: " Chuck Lever
2026-01-14 14:28 ` [PATCH v4 14/16] nfsd: Report export case-folding via NFSv3 PATHCONF Chuck Lever
2026-01-14 14:28 ` [PATCH v4 15/16] nfsd: Implement NFSv4 FATTR4_CASE_INSENSITIVE and FATTR4_CASE_PRESERVING Chuck Lever
2026-01-14 14:28 ` [PATCH v4 16/16] ksmbd: Report filesystem case sensitivity via FS_ATTRIBUTE_INFORMATION Chuck Lever

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=874ionw8ty.fsf@mail.parknet.co.jp \
    --to=hirofumi@mail.parknet.co.jp \
    --cc=adilger.kernel@dilger.ca \
    --cc=almaz.alexandrovich@paragon-software.com \
    --cc=anna@kernel.org \
    --cc=brauner@kernel.org \
    --cc=cel@kernel.org \
    --cc=cem@kernel.org \
    --cc=chao@kernel.org \
    --cc=chuck.lever@oracle.com \
    --cc=frank.li@vivo.com \
    --cc=glaubitz@physik.fu-berlin.de \
    --cc=hansg@kernel.org \
    --cc=jack@suse.cz \
    --cc=jaegeuk@kernel.org \
    --cc=linkinjeon@kernel.org \
    --cc=linux-cifs@vger.kernel.org \
    --cc=linux-ext4@vger.kernel.org \
    --cc=linux-f2fs-devel@lists.sourceforge.net \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=linux-xfs@vger.kernel.org \
    --cc=pc@manguebit.org \
    --cc=ronniesahlberg@gmail.com \
    --cc=senozhatsky@chromium.org \
    --cc=sfrench@samba.org \
    --cc=sj1557.seo@samsung.com \
    --cc=slava@dubeyko.com \
    --cc=sprasad@microsoft.com \
    --cc=trondmy@kernel.org \
    --cc=tytso@mit.edu \
    --cc=yuezhang.mo@sony.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