From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C427421886; Wed, 29 Apr 2026 18:07:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777486059; cv=none; b=bQs+TKLeLdjjaW80Gl38WfUOy31ApecEKXhDmNi/0I0otSTnAlkaHtIVDxQ6zKJYlith+68fSwOzTLQdqs+dh8evtRI1rAeCR7Wir/diNDNYxi6DxuFvVeQ0+0sr9jQmCw/1Ia0EZBnFHtahRiPbjVpnc8k0xgzd06QFNcSF8ik= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777486059; c=relaxed/simple; bh=wqnEoHXABCWnB4qIWNaXjQlMxqtzft0aZTt1jlyUTc4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=I8Ho/VblUSE5mr3vsPPwK8B7CDI+gBJ2A1l53+mQ/p6Pbnj61QHHOka8a3IRs7m/QhlPQGWBOsh9hBRCq22Wj6M+w6wz4pVJnDIF7lhZ3bGCcu8VAem91VSdq79tGFG9pWxJJS3PpWJ3+WIAC0MRHzCPCRZIAeXI0xq34AyyPqc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uNqayZYZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="uNqayZYZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28F06C19425; Wed, 29 Apr 2026 18:07:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777486058; bh=wqnEoHXABCWnB4qIWNaXjQlMxqtzft0aZTt1jlyUTc4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=uNqayZYZP4d563Tz6s0A1L/NElElR5OfMej6OgVnKHNKHOMVL3qz7HuVwE814+tkv 60CFgp/9LuMqUXQ0yRkEvFIk6gJOoWdytmlrp82skKYaWcD22Qjzgo4YufxSuMUhJQ S5lUwW/KhyctGMW2ueXZbtsl8DlEoTEnOlNT0qByQknvSSc4T7g2FvJ/OCFPfYR2ZK eG6P/fxh0C/Yo46sbrDQNJMspY49NFRHNgrd1XI+KoDFbl3VKoqdBGrWo1fOeHg8+v a34p07+Z8KVjrtm02CLaW1F+stNZC9buDDB4k9AFzo60ZKipMyZnHmjtmho3/3geVQ 6kW0kdRwX1FZg== From: Chuck Lever Date: Wed, 29 Apr 2026 14:07:15 -0400 Subject: [PATCH v12 04/15] exfat: Implement fileattr_get for case sensitivity Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260429-case-sensitivity-v12-4-8057123bebe0@oracle.com> References: <20260429-case-sensitivity-v12-0-8057123bebe0@oracle.com> In-Reply-To: <20260429-case-sensitivity-v12-0-8057123bebe0@oracle.com> To: Al Viro , Christian Brauner , Jan Kara Cc: 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-api@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, hirofumi@mail.parknet.co.jp, 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 , Roland Mainz X-Mailer: b4 0.16-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=2796; i=chuck.lever@oracle.com; h=from:subject:message-id; bh=Jrgq3TGYmS+gsjYQgXc1oI5YkxxrwLITLmwEPv8w32E=; b=owEBbAKT/ZANAwAKATNqszNvZn+XAcsmYgBp8kjclPHLKujAIhKkKbRXlwRZNaf5RgoJ3oMOU E5MKvmM13eJAjIEAAEKAB0WIQQosuWwEobfJDzyPv4zarMzb2Z/lwUCafJI3AAKCRAzarMzb2Z/ lzD7D/dssDt6Zw0RVQNoctEaM5wgO54Tc2OrV2z18f+Cv1vGBLyqVHiZjO2hpjljhLyMGFYYUzz oyz6yv7JmtpaqVTp5QLSVryQtmcYBtbciMjUzY9Ls+BKcFWnmB5wekk6uMBPm0tSX2IsKbboI7E nYuchKc88nOuYn64PY8S4T9lDsFvlXgU9XvQHO7khrtV5hEoOGgBGNhV5G5/05YkdoSKZ8xmzvp 5XdxH+59lf2QOLPWwWGmBc8IxyscmlJhBDME6a10wnl9rWdhBDQMZf4UWWJZ44AtGRK7mLkCrxy +295OXft8VxkMM6Rzba+GZE1WbXx/lEmpvcOZNrKYpZp6IJsbe0P+uKqaejyUqstqZJCeZtdTh0 x+WZTE5zGZjFyu5q6VD4rLvcDvoXqta5wG5L0LDNAFcnBggI+guTmMJk4SiZ8MY4qxPMjycJmKu FsYFSy4fv4uR3GtDqwYk+x6fr+msS3vVEu4mvxnS5O1Q8yWcmu7xxA9+MOwjyZVkWfk1x3T3323 9KeV+1N9SR9eoAtnPOAh3lRJ7UGv3xZ9pHlo6FlhJx6BprXHUXGxy6Uz36U5vW/hPjeTocfivfr OcSTxn96Ts5ufrREAQFlCvqXemdGxwFX0HxRbZKMOa1H0dblwqgVtyNjnjYC7wbTdDL420JNqSi gMVx4QCofoojG X-Developer-Key: i=chuck.lever@oracle.com; a=openpgp; fpr=28B2E5B01286DF243CF23EFE336AB3336F667F97 From: Chuck Lever Report exFAT's case sensitivity behavior via the FS_XFLAG_CASEFOLD flag. exFAT is always case-insensitive (using an upcase table for comparison) and always preserves case at rest. Acked-by: Namjae Jeon Reviewed-by: Roland Mainz Signed-off-by: Chuck Lever --- fs/exfat/exfat_fs.h | 2 ++ fs/exfat/file.c | 18 ++++++++++++++++-- fs/exfat/namei.c | 1 + 3 files changed, 19 insertions(+), 2 deletions(-) diff --git a/fs/exfat/exfat_fs.h b/fs/exfat/exfat_fs.h index 89ef5368277f..aff4dcd4e75a 100644 --- a/fs/exfat/exfat_fs.h +++ b/fs/exfat/exfat_fs.h @@ -496,6 +496,8 @@ int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry, int exfat_getattr(struct mnt_idmap *idmap, const struct path *path, struct kstat *stat, unsigned int request_mask, unsigned int query_flags); +struct file_kattr; +int exfat_fileattr_get(struct dentry *dentry, struct file_kattr *fa); int exfat_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); long exfat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); long exfat_compat_ioctl(struct file *filp, unsigned int cmd, diff --git a/fs/exfat/file.c b/fs/exfat/file.c index 354bdcfe4abc..91e5511945d1 100644 --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "exfat_raw.h" #include "exfat_fs.h" @@ -323,6 +324,18 @@ int exfat_getattr(struct mnt_idmap *idmap, const struct path *path, return 0; } +int exfat_fileattr_get(struct dentry *dentry, struct file_kattr *fa) +{ + /* + * exFAT compares filenames through an upcase table, so lookup + * is always case-insensitive. Long names are stored in UTF-16 + * with case intact; CASENONPRESERVING stays clear. + */ + fa->fsx_xflags |= FS_XFLAG_CASEFOLD; + fa->flags |= FS_CASEFOLD_FL; + return 0; +} + int exfat_setattr(struct mnt_idmap *idmap, struct dentry *dentry, struct iattr *attr) { @@ -817,6 +830,7 @@ const struct file_operations exfat_file_operations = { }; const struct inode_operations exfat_file_inode_operations = { - .setattr = exfat_setattr, - .getattr = exfat_getattr, + .setattr = exfat_setattr, + .getattr = exfat_getattr, + .fileattr_get = exfat_fileattr_get, }; diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index 2c5636634b4a..94002e43db08 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -1311,4 +1311,5 @@ const struct inode_operations exfat_dir_inode_operations = { .rename = exfat_rename, .setattr = exfat_setattr, .getattr = exfat_getattr, + .fileattr_get = exfat_fileattr_get, }; -- 2.53.0