From nobody Thu Mar 5 08:56:24 2026 Received: from mail-qk1-f171.google.com (mail-qk1-f171.google.com [209.85.222.171]) (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 244C22E8E12 for ; Mon, 16 Feb 2026 18:41:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771267269; cv=none; b=tPuJunLmUcJnrEC8u6EvJ3ZFekwIPUgrQzHfYRn0el7CrcgZ4ya1YFbnOR/K+a7nSRnkdFP2XwXpDBOv2Wv7MNnYOKXYVJC9FzEJKkfcJHQjdJJmzepcBAVJu5cR85yJIeHS+/pQtV3TTlY36kWy3LV68iQCSUaOEh2GzwL4u2A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771267269; c=relaxed/simple; bh=sG+WbVQlxuQia5HjUs8kRut/EDDZgsAt64p2h2iilk8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LBGue5N1su1P8gV7u8sw+VTHxbP5lDZlHL5KE0qUBEcUYRLveFasjVMN9ZpNualCaVw0tk3DZ3BmFCCUe28sJj552YwBf8X2PGRxmOqcENVqXbaVtN7muACig2WiUZIgZrQhSdvDzF9E6BE+ui+I5AanKuW7304FBM+3mo8kJ48= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=zetier.com; spf=pass smtp.mailfrom=zetier.com; dkim=pass (2048-bit key) header.d=zetier.com header.i=@zetier.com header.b=in73cRoo; arc=none smtp.client-ip=209.85.222.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=zetier.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zetier.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zetier.com header.i=@zetier.com header.b="in73cRoo" Received: by mail-qk1-f171.google.com with SMTP id af79cd13be357-8cb40030be5so366921585a.3 for ; Mon, 16 Feb 2026 10:41:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zetier.com; s=gm; t=1771267267; x=1771872067; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=LTgueUMUNqPPeLpij1IzKLOOR2xA2a9HugYD4yHosO0=; b=in73cRoo5Dp56jscGwTCfM2SFEudZvKKGoEFyITKZ8BXn9rIdRZDjZspygVsF4rGZ3 Xtwks25hTye4W42gEbQlU/VOvGcHa4P+Kb3NzswRwCehe65yQAmkiTYpGHEVeZWah9gR i9foY9jphRbeWoSo6Afd9AA0ZIknPVq75xJhrkz4VaJhWg07GbvrHJ54b66ewEBrOydv ycLeQclA3YD1w9beCp3tKJH1yI5ZXRDrnzhgjOSF9yicM4kS3gSr5PxpSYtxBYc1Sxnq GzJBYXoy+B+iaUNoLqmY5kkPzQMfl0SiMwF4ds9GU+n39dUKipfjllgTRqiNNEo9YNHo jujQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771267267; x=1771872067; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=LTgueUMUNqPPeLpij1IzKLOOR2xA2a9HugYD4yHosO0=; b=l8F4DcuydCEqtR3t22XTBtZrbJlTWUFY3eCn+pza8tbs3aC0MGGIc1CfQOmkTdKlbM Qe/BqDD1A9DmYssMDXO3htY10BlTPruHx+EstxKX/5Vw2ldYCPNaqYvFwqFTYah4f/kM u9eFbwMTfjYNrjOFHb2paXSil+Vsq67xS+ZsvKadQctOWpUsrBi54KGTFbAPIqN5vPXP oIMfv++C5CrTLYgZ4qn0QZyl7ngz3MKg9LLn+6/9t6fVouYwQ8sdYmCewUH8lxwAcob7 TAdYRebjjd5bea15y1TSShVpNIGAnnZtrqCkxkPOVwgYjLf/UmoSKo9N3wI1cPEqIlK/ 2xZg== X-Forwarded-Encrypted: i=1; AJvYcCVIW+IOPmbMuWhWdzjISB1ILIsdMjxvG6/BeFENMnhn5zUFG5pljAVApNlnVmSm/6Z8/sb+m2d7jkk2dgg=@vger.kernel.org X-Gm-Message-State: AOJu0Yx0rdGKgqVQnMS2Uv2IcPeZ9yk2oS/Nnste3dckkoGikbO/7T4n Vb1NrjHjkrIoMQ8BsUUy1P9LEhq1fyduFNdT6ODgOuWOLJ87w9OPHw75PPGuEFi8Atg= X-Gm-Gg: AZuq6aKc5lvDwmZ/HchZ9coIySfYMICbDCl14uwZyAFcqWXa+bHSKqmly5z1kJ6dAUu Y6n/qh3xIeJ7Rk9AVOw4oFCzTcXBZQg9bOvZmZhNjY38e6VKy6Cyk7d43Jnh2OM0VLc1KujHNBx AShX/Gff0T/6fOwyUM5uM9IHVNuqJgxWknolISxcBB8m7/aTuo0vy1HltBFwD3/KdD7jgxw1a2j XTgsmaG1vh8oh+qGOX7lSiFZ77HsmqjEaml7R1G7BSoWUtm9kbpA3OlrcDyycUZxx+2MZZQ/KFN P03lAhV4zRaynjARiUxjG5eA4KCewkyfuSU61fgjwZWkqtHvWxsa9FESX7c2KV93n2Zy7um2zPw /Ng3RzcZer1LQ0liKWVUH37ZZjzgxml4ug+1cqXKIiDjxeAiaUhz6NyJYawq94eFvhb4ICNYYJI /u0nZqX4rChrMUjWPlmh4fDMW69qCtyWwjK2Grj9Jbm+pOdRwi64rymTuVW6XIlk01syQE5bIoK CDbK+IzN797A+Q= X-Received: by 2002:a05:620a:d8c:b0:8c9:f9c2:118e with SMTP id af79cd13be357-8cb4226ca53mr1370063585a.32.1771267266960; Mon, 16 Feb 2026 10:41:06 -0800 (PST) Received: from warpstation.incus (243.69.21.34.bc.googleusercontent.com. [34.21.69.243]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8971cca7299sm157766676d6.22.2026.02.16.10.41.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Feb 2026 10:41:06 -0800 (PST) From: Ethan Ferguson To: luisbg@kernel.org, salah.triki@gmail.com Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Ethan Ferguson Subject: [PATCH 2/2] befs: Add FS_IOC_SETFSLABEL ioctl Date: Mon, 16 Feb 2026 13:38:59 -0500 Message-ID: <20260216183859.38269-3-ethan.ferguson@zetier.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260216183859.38269-1-ethan.ferguson@zetier.com> References: <20260216183859.38269-1-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 the FS_IOC_SETFSLABEL ioctl to the befs filesystem. Signed-off-by: Ethan Ferguson --- fs/befs/linuxvfs.c | 64 ++++++++++++++++++++++++++++++++++++---------- 1 file changed, 51 insertions(+), 13 deletions(-) diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 942d247a6cae..f017ae4577cc 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -754,6 +754,23 @@ static int befs_show_options(struct seq_file *m, struc= t dentry *root) return 0; } =20 +static befs_super_block *befs_get_disk_sb(struct super_block *sb, + struct buffer_head *bh) +{ + const off_t x86_sb_off =3D 512; + befs_super_block *ret =3D (befs_super_block *) bh->b_data; + + if ((ret->magic1 =3D=3D BEFS_SUPER_MAGIC1_LE) || + (ret->magic1 =3D=3D BEFS_SUPER_MAGIC1_BE)) { + befs_debug(sb, "Using PPC superblock location"); + } else { + befs_debug(sb, "Using x86 superblock location"); + ret =3D (befs_super_block *) ((void *) bh->b_data + x86_sb_off); + } + + return ret; +} + /* This function has the responsibiltiy of getting the * filesystem ready for unmounting. * Basically, we free everything that we allocated in @@ -762,9 +779,21 @@ static int befs_show_options(struct seq_file *m, struc= t dentry *root) static void befs_put_super(struct super_block *sb) { - kfree(BEFS_SB(sb)->mount_opts.iocharset); - BEFS_SB(sb)->mount_opts.iocharset =3D NULL; - unload_nls(BEFS_SB(sb)->nls); + struct befs_sb_info *befs_sb =3D BEFS_SB(sb); + struct buffer_head *bh =3D NULL; + befs_super_block *disk_sb; + + bh =3D sb_bread(sb, 0); + if (bh) { + disk_sb =3D befs_get_disk_sb(sb, bh); + memcpy(disk_sb->name, befs_sb->name, B_OS_NAME_LENGTH); + mark_buffer_dirty(bh); + brelse(bh); + } + + kfree(befs_sb->mount_opts.iocharset); + befs_sb->mount_opts.iocharset =3D NULL; + unload_nls(befs_sb->nls); kfree(sb->s_fs_info); sb->s_fs_info =3D NULL; } @@ -799,7 +828,6 @@ befs_fill_super(struct super_block *sb, struct fs_conte= xt *fc) struct inode *root; long ret =3D -EINVAL; const unsigned long sb_block =3D 0; - const off_t x86_sb_off =3D 512; int blocksize; struct befs_mount_options *parsed_opts =3D fc->fs_private; int silent =3D fc->sb_flags & SB_SILENT; @@ -843,15 +871,7 @@ befs_fill_super(struct super_block *sb, struct fs_cont= ext *fc) } =20 /* account for offset of super block on x86 */ - disk_sb =3D (befs_super_block *) bh->b_data; - if ((disk_sb->magic1 =3D=3D BEFS_SUPER_MAGIC1_LE) || - (disk_sb->magic1 =3D=3D BEFS_SUPER_MAGIC1_BE)) { - befs_debug(sb, "Using PPC superblock location"); - } else { - befs_debug(sb, "Using x86 superblock location"); - disk_sb =3D - (befs_super_block *) ((void *) bh->b_data + x86_sb_off); - } + disk_sb =3D befs_get_disk_sb(sb, bh); =20 if ((befs_load_sb(sb, disk_sb) !=3D BEFS_OK) || (befs_check_sb(sb) !=3D BEFS_OK)) @@ -964,6 +984,22 @@ static int befs_ioctl_get_volume_label(struct super_bl= ock *sb, char __user *arg) return 0; } =20 +static int befs_ioctl_set_volume_label(struct super_block *sb, char __user= *arg) +{ + struct befs_sb_info *sbi =3D BEFS_SB(sb); + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (sb_rdonly(sb)) + return -EROFS; + + if (copy_from_user(sbi->name, arg, B_OS_NAME_LENGTH)) + return -EFAULT; + + return 0; +} + static long befs_generic_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { @@ -973,6 +1009,8 @@ static long befs_generic_ioctl(struct file *filp, unsi= gned int cmd, switch (cmd) { case FS_IOC_GETFSLABEL: return befs_ioctl_get_volume_label(inode->i_sb, user); + case FS_IOC_SETFSLABEL: + return befs_ioctl_set_volume_label(inode->i_sb, user); default: return -ENOTTY; } --=20 2.43.0