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Thu, 28 Aug 2025 13:37:27 -0700 (PDT) From: Ethan Ferguson To: almaz.alexandrovich@paragon-software.com Cc: ntfs3@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Ethan Ferguson Subject: [PATCH 1/3] ntfs3: transition magic number to shared constant Date: Thu, 28 Aug 2025 16:37:14 -0400 Message-Id: <20250828203716.468564-2-ethan.ferguson@zetier.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250828203716.468564-1-ethan.ferguson@zetier.com> References: <20250828203716.468564-1-ethan.ferguson@zetier.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use the common FSLABEL_MAX constant instead of a hardcoded magic constant of 256. Signed-off-by: Ethan Ferguson --- fs/ntfs3/ntfs_fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ntfs3/ntfs_fs.h b/fs/ntfs3/ntfs_fs.h index 1296e6fcc779..630128716ea7 100644 --- a/fs/ntfs3/ntfs_fs.h +++ b/fs/ntfs3/ntfs_fs.h @@ -280,7 +280,7 @@ struct ntfs_sb_info { __le16 flags; // Cached current VOLUME_INFO::flags, VOLUME_FLAG_DIRTY. u8 major_ver; u8 minor_ver; - char label[256]; + char label[FSLABEL_MAX]; bool real_dirty; // Real fs state. } volume; =20 --=20 2.34.1 From nobody Fri Oct 3 15:32:45 2025 Received: from mail-qk1-f179.google.com (mail-qk1-f179.google.com [209.85.222.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3ED5C2D061A for ; Thu, 28 Aug 2025 20:37:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756413454; 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Signed-off-by: Ethan Ferguson --- fs/ntfs3/file.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index c1ece707b195..0a1e9f16ffaf 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -49,6 +49,14 @@ static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, u= nsigned long arg) return 0; } =20 +static int ntfs_ioctl_get_volume_label(struct ntfs_sb_info *sbi, u8 __user= *buf) +{ + if (copy_to_user(buf, sbi->volume.label, FSLABEL_MAX)) + return -EFAULT; + + return 0; +} + /* * ntfs_ioctl - file_operations::unlocked_ioctl */ @@ -64,6 +72,8 @@ long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long= arg) switch (cmd) { case FITRIM: return ntfs_ioctl_fitrim(sbi, arg); + case FS_IOC_GETFSLABEL: + return ntfs_ioctl_get_volume_label(sbi, (u8 __user *)arg); } return -ENOTTY; /* Inappropriate ioctl for device. */ } --=20 2.34.1 From nobody Fri Oct 3 15:32:45 2025 Received: from mail-qk1-f174.google.com (mail-qk1-f174.google.com [209.85.222.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 098A22D1F72 for ; 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Thu, 28 Aug 2025 13:37:31 -0700 (PDT) Received: from ethanf.zetier.com ([65.222.209.234]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7fc153de18asm45879585a.54.2025.08.28.13.37.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Aug 2025 13:37:31 -0700 (PDT) From: Ethan Ferguson To: almaz.alexandrovich@paragon-software.com Cc: ntfs3@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Ethan Ferguson Subject: [PATCH 3/3] ntfs3: add FS_IOC_SETFSLABEL ioctl Date: Thu, 28 Aug 2025 16:37:16 -0400 Message-Id: <20250828203716.468564-4-ethan.ferguson@zetier.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250828203716.468564-1-ethan.ferguson@zetier.com> References: <20250828203716.468564-1-ethan.ferguson@zetier.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add support for the FS_IOC_SETFSLABEL ioctl. Signed-off-by: Ethan Ferguson --- fs/ntfs3/file.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c index 0a1e9f16ffaf..4c90ec2fa2ea 100644 --- a/fs/ntfs3/file.c +++ b/fs/ntfs3/file.c @@ -57,6 +57,22 @@ static int ntfs_ioctl_get_volume_label(struct ntfs_sb_in= fo *sbi, u8 __user *buf) return 0; } =20 +static int ntfs_ioctl_set_volume_label(struct ntfs_sb_info *sbi, u8 __user= *buf) +{ + u8 user[FSLABEL_MAX] =3D {0}; + int len; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (copy_from_user(user, buf, FSLABEL_MAX)) + return -EFAULT; + + len =3D strnlen(user, FSLABEL_MAX); + + return ntfs_set_label(sbi, user, len); +} + /* * ntfs_ioctl - file_operations::unlocked_ioctl */ @@ -74,6 +90,8 @@ long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long= arg) return ntfs_ioctl_fitrim(sbi, arg); case FS_IOC_GETFSLABEL: return ntfs_ioctl_get_volume_label(sbi, (u8 __user *)arg); + case FS_IOC_SETFSLABEL: + return ntfs_ioctl_set_volume_label(sbi, (u8 __user *)arg); } return -ENOTTY; /* Inappropriate ioctl for device. */ } --=20 2.34.1