From nobody Sun Feb 8 05:42:21 2026 Received: from mail-oi1-f170.google.com (mail-oi1-f170.google.com [209.85.167.170]) (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 EC51C18C345; Thu, 15 Aug 2024 07:45:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707909; cv=none; b=cb4zQYH7x0NkxXylO3jBOhg4Axk5uTJH0wzZOdg6H6/pXQdZOILz569UIo6HbMw+Mw7LsdZ4MLvBep7ud4R05K+dbHgnTtRQ6h/Hd38nwxnnuEK8nZIrVwLPymCjNGvMt1UmS4r+0RhbDTezZfMea+fVRutfLshQsxAKIuHJR0w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707909; c=relaxed/simple; bh=/mB/mlfQrIgD0frh/4DcIeHDLda+/2ewOJd7MQOI3yc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=qIHWSCWawB7XpR5Uhp7Qp2sjZiAGElhi9QnaEUl6TrwqCQJ10ZJbwtWg5BJbhohl1CeCR+ABShAIrSEYDNyAFpCDSy1RDe8zxH1O25DW/kyeyrVymMTO4Q+bgM97jFa2mFRheqYnG64FU94wfg7q1yGla/rJtWjo4n20kxUcvWI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=MHkquwVv; arc=none smtp.client-ip=209.85.167.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="MHkquwVv" Received: by mail-oi1-f170.google.com with SMTP id 5614622812f47-3db504ab5f3so399843b6e.0; Thu, 15 Aug 2024 00:45:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1723707907; x=1724312707; 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=bU0q1yZ+PWK8s4WWyTu7zQH49E1o8+TlEE7m0tArHx8=; b=MHkquwVvxeeUUPD1TGK4h+ZMcn5JEfy0OKps0bYAvih9GksV7ejxh+T8pmUMkHrf3q x7EE971f/Pdagxl/uahddXv3d0jb2zQ9PAnNvulpsJxI9ePHgTmQl2YsYW8FOjiPPomb kRHluAoo+R3Y1O8C1wQito8JLeKYbUBfvj0yZKVQEWX5CSdIX9ys+bUY7I2dc9Vx/soU Nb/AzGSVz2MAABkA8ld7p6q7P7hGn+DngYaq/tbCNHaTecrOAFxzxkfy49+Z9LBMf2GK 8QjGVqiwhEaZDGG0k/EkpycJ09d6jRz8RohWu16Fg+fguBHEjFDl1jeDQJIe6EFXhTn8 tfgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723707907; x=1724312707; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=bU0q1yZ+PWK8s4WWyTu7zQH49E1o8+TlEE7m0tArHx8=; b=LmVupO7nXLOVOPKGMO3OLbRPEuhbbuGwU32MOWZLsvB64g3VRgBuWOhlj/CoVqFm5a q4AN4WV7qnbSk6hI2PyIcm8+Whbiep3m+XKbU+hkk9tn+9vSqU1dZASaRjnWEqWxRse8 DLUJW2DvLCakSERM4pc4RPSooAFZb9Mz0jZF8W6IXDoSjHcTgQlDD6wsFeQwxZaWXKGU VWI1UvdGxUqBS76s6vDMzgQRFbex/wOhEMdduQCjxY13W+WpFI7aHdumQsbXs4qEAdM7 X4IhpcLT0qn1CvN6EU0YUMaLm11G/4lwTK/CjX48nIFaztmjyIeBubnGCoJRIsuD26PB I4jA== X-Forwarded-Encrypted: i=1; AJvYcCXf+T9BI5kpFQDymzp3GCndSdyHPLuLbxB8jCjydBXu7saR5858jWxFCLjSDIQxcadtBE8t0YTOV9rDYQHU6wxQH6Cy7Cq+U2EoIT2H X-Gm-Message-State: AOJu0YxOms6vf2SDUnfPB6WYrwAoxjnhTWYPLYhbidl2Du41P2A0mZda EcyIae7doaSP1e73Qelwr83+z6Cgz4+SWrGuaUZ3wkRYg4MQ5UBzqvHxeQ== X-Google-Smtp-Source: AGHT+IGf1Ia5UvOW1nviDnQ+6Olj1OBL2BE1pruYmmbR28+ThG7CXAV9Vh88PbbD3/YTOAWgOEGsCA== X-Received: by 2002:a05:6870:d60a:b0:25d:e3d:b441 with SMTP id 586e51a60fabf-26fe5be0ac4mr5839090fac.40.1723707906818; Thu, 15 Aug 2024 00:45:06 -0700 (PDT) Received: from carrot.. (i222-151-34-139.s42.a014.ap.plala.or.jp. [222.151.34.139]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7127add721dsm584767b3a.42.2024.08.15.00.45.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2024 00:45:06 -0700 (PDT) From: Ryusuke Konishi To: Andrew Morton Cc: linux-nilfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/4] nilfs2: add support for FS_IOC_GETUUID Date: Thu, 15 Aug 2024 16:44:05 +0900 Message-Id: <20240815074408.5550-2-konishi.ryusuke@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240815074408.5550-1-konishi.ryusuke@gmail.com> References: <20240815074408.5550-1-konishi.ryusuke@gmail.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" Expose the UUID of a file system instance using the super_set_uuid helper and support the FS_IOC_GETUUID ioctl. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/super.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index e835e1f5a712..167050b3ce7e 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -1063,6 +1063,9 @@ nilfs_fill_super(struct super_block *sb, struct fs_co= ntext *fc) if (err) goto failed_nilfs; =20 + super_set_uuid(sb, nilfs->ns_sbp[0]->s_uuid, + sizeof(nilfs->ns_sbp[0]->s_uuid)); + cno =3D nilfs_last_cno(nilfs); err =3D nilfs_attach_checkpoint(sb, cno, true, &fsroot); if (err) { --=20 2.34.1 From nobody Sun Feb 8 05:42:21 2026 Received: from mail-pf1-f174.google.com (mail-pf1-f174.google.com [209.85.210.174]) (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 CD5361991BB; Thu, 15 Aug 2024 07:45:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707911; cv=none; b=TSkx/4prWHqU4odRRuRbuKUxLh8jrXAJHbMSEvUV4HSIgxylEjBjChPGGsCvN7lDp8zgHem21Q+h6OH2dKx+nvs9wvj9TZq5KALqw1gpYzpmf0lEmUvAHC6pkjrqmuPKDf/+Cyomb6+7V25ngFpjaLYkY79vskkRz8HGBTbVR+s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707911; c=relaxed/simple; bh=IDvYOCVCPbT/qeH11iEvMpxTuSmtxkTPmEqG9TXDLh8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=A0v4hXOAaLpEYrDG524Iqw3K7FsoYsKJJIl4bAv76zizFNQESxFPV52gHZwWqU7xr7OLvbvBL9qNqElKgSMKYMqBrUsfby8NaBXwKUyUs4hk2HXvPLb/1JFtaWXR8bhyAtwsWhur6eiklix9b29rDTidBBFpHYNVBWxVRHKg2oc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=NLsGQcop; arc=none smtp.client-ip=209.85.210.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="NLsGQcop" Received: by mail-pf1-f174.google.com with SMTP id d2e1a72fcca58-70d199fb3dfso509620b3a.3; Thu, 15 Aug 2024 00:45:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1723707909; x=1724312709; 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=l06nKOKRPIo9HloPx88hF5Lof023RSJ43kuiUzqTLDE=; b=NLsGQcopqInTAfsmVIN+OrSNpxcgqB7MsbS2VUMJVgGaGXBQXFdHa3MzN6b52DXLVh A+tUfWA9SCTRHxdSfHR81kVAhDqhpph9bWpJZOmuoFL0tplZJOzgbMgCQLbN3fcEl2qP bUvCK89yS0v0QG2AsSQuzDAB2eL+XbxwQZRLMtrV68srUZTFqDOv2vEjMWG4GLjgJ2Mn DypBkGPFgcBikSq6ZZar/XW1TGtExg+8IQ0ysx6XW3suL9QGv9urG6J2+zOGV+XD5pPq 0zD0VXu5VF66xSrAoK8yAKXAt8/BWJ6q1K77OfziT6caHclikHpl9Wn7RPJWUmk1OSoE PnEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723707909; x=1724312709; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=l06nKOKRPIo9HloPx88hF5Lof023RSJ43kuiUzqTLDE=; b=fbmP9DsPuUCjDQwTMClak8Oik9JU1qaHUU1IgzP0GytVwLy0qfXZBak6zVzkyBwMbW 0G7bsOntx4/B6KzTvz3HhWspKVF61PDmpPpznkJ/Ali2xvugjWRuHZBvZ0rnnF61/NPJ 4+ijrhJDrhS6vF9o4wb4bv5QfmgljZvT9bTxMr3KeyIyAWkz9D+xRcw13b1WszakCHyG XnW9ZBf13EhblDaGkLRfInJX2GD5qK/ClujxHJPjoD80N/KQ8dwLvHcw18E52orhs5MW cqRqxrI7ki/i2iiEf1QqcvTYW7nU/TebtQ9y0Lo6OZk2f55v7e5CIX+Cb+If+sDqQE/R rmXw== X-Forwarded-Encrypted: i=1; AJvYcCVXWbxYkcsJ8KVLVpJrzNrgT0r9fBeGNkMXPqIjCigTWgdFc1pIRp46E/1EkcoOWgv0unK4aMxzqH6v2tLG0Y0xkMzBf7nIxGql1kw4 X-Gm-Message-State: AOJu0YzS8XeWS2zptmkIuZmte5bC1NbWusxhqKd/TkkJlAAWYBJB2fFH D3EKnzYPetXMhN1sFtC2y/Q2ObMG55GKVsFhfgWqo8chknVBzmLOwaRtYg== X-Google-Smtp-Source: AGHT+IHGNIWz3NPAKuxFCFBnV6PN4X0LYw6p9V1/mKoQgIG6Wk21ZTWjGkwb8gd0agiV5yzBDFvdfw== X-Received: by 2002:a05:6a20:49a1:b0:1c8:ed18:b552 with SMTP id adf61e73a8af0-1c8ed18b57dmr4349601637.2.1723707909087; Thu, 15 Aug 2024 00:45:09 -0700 (PDT) Received: from carrot.. (i222-151-34-139.s42.a014.ap.plala.or.jp. [222.151.34.139]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7127add721dsm584767b3a.42.2024.08.15.00.45.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2024 00:45:08 -0700 (PDT) From: Ryusuke Konishi To: Andrew Morton Cc: linux-nilfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] nilfs2: add support for FS_IOC_GETFSSYSFSPATH Date: Thu, 15 Aug 2024 16:44:06 +0900 Message-Id: <20240815074408.5550-3-konishi.ryusuke@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240815074408.5550-1-konishi.ryusuke@gmail.com> References: <20240815074408.5550-1-konishi.ryusuke@gmail.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 standard helper super_set_sysfs_name_bdev() to give the sysfs subpath of the filesystem for the FS_IOC_GETFSSYSFSPATH ioctl. For nilfs2, it will output "nilfs2/". Signed-off-by: Ryusuke Konishi --- fs/nilfs2/super.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 167050b3ce7e..76e35e6773d1 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -1065,6 +1065,7 @@ nilfs_fill_super(struct super_block *sb, struct fs_co= ntext *fc) =20 super_set_uuid(sb, nilfs->ns_sbp[0]->s_uuid, sizeof(nilfs->ns_sbp[0]->s_uuid)); + super_set_sysfs_name_bdev(sb); =20 cno =3D nilfs_last_cno(nilfs); err =3D nilfs_attach_checkpoint(sb, cno, true, &fsroot); --=20 2.34.1 From nobody Sun Feb 8 05:42:21 2026 Received: from mail-oa1-f46.google.com (mail-oa1-f46.google.com [209.85.160.46]) (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 71A1819AD9B; Thu, 15 Aug 2024 07:45:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.46 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707913; cv=none; b=tdgPp5b/LE80pFo0kflEBT+lZOn1kvNwJIYtLPAwujmZddMNwQdv+cN2pO+4MHnAHQ9UVwqN3nhIAxYwO2hGppBJlhlXroIYIZkylsEz88JBC/emkLmoX/AVO1OFXNBkrux+B90PreKXEiRDodztQoqne2LEO6kpfZeGgBsDs2g= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707913; c=relaxed/simple; bh=Q6g3LPgyCADVj19dPUzRQGLF9lwAt91WnJ0TQOfM82k=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=epGfrG0c40NMaMFbrunP/JRPYSHrgZNTX4zBuglvaqDbhSY4LrSq1uyoOZaKE27kXjiy8g6I0TrlV/iDCkhnp8p6TbqNaG6TjG4Ky1uhQ5/mJ4VShVPRYruuKTJtEYVxvXf+CQhMKhnlL6u1nLcIQALv9rHQYtSOFXOfrp6hjtY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=AsnzXuOf; arc=none smtp.client-ip=209.85.160.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="AsnzXuOf" Received: by mail-oa1-f46.google.com with SMTP id 586e51a60fabf-26875acdf72so470029fac.0; Thu, 15 Aug 2024 00:45:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1723707911; x=1724312711; 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=r+dYBANd8pfFCoJ+XNI+1toZoLmt0pOoCbgwJ2lH9os=; b=AsnzXuOfZu/geaAI8QplBrJg0Ee4M+IqlvdvkE/mh1dLMx8FvlwO89cLqHA2gMPYjN o9UJLY+OZ/oUtdNSGtL6YVrDmmWB+px1TQdmTqIpIynku8ZvguhffQte5Hk8J171XKSr Rxqr9Ip/GYMQrZNRjGdnTSa2csCi28+fMc5PuzZkQ50j3uX4WfzXPZ7Ory5Zlw1s6YGH fndEzZNvRioVyX+CA5JrSFc3e0k0u3eZEj9BDgpCCk0O+cfBGnMVWmbe4fm4LrvUIaDi jhePHuyOLefc3NUv2oiyT9sQUIOldddwJkrJCrDEdcnfsAunkUXiFY6DrAukknr4e1ZC ng1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723707911; x=1724312711; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=r+dYBANd8pfFCoJ+XNI+1toZoLmt0pOoCbgwJ2lH9os=; b=sOlfeMrb8hHWqJatKHUruIzD7So5Ao6UXdbxGtQFRR1/Gy4vtrysqtOcjqENVoVDkJ bVgq/pjKMkc4zNbEo/Jcb5mlLLB0uueWPBtvqv1Qn+sMJpgwX76M9/orRXq20W+wCL1K M+pgK8k5qhfW7RmNXIvgvjhuW/66hXZ2NRbtq7PXbQIJepf6+ZG3SySEtw4K7WlzP9mE +24hLGRhSJ5ZwLeg6FwHmNTwRA/j539s6wUiHEdZvFw1enQWwAQIKtybcDq5QVJRXUmg DBHHVioRN2NNsgqpwuQQCGtiVMcoz7iozsKxoLIjjP2efUZpofknbRs8bvqZtWMypCPT gSeg== X-Forwarded-Encrypted: i=1; AJvYcCXratDU6nQj//gdkhDVHaFhv7DnOCx5AIyNU1j9STNua/xHS9ouDidTQbXIAwjmDGPWQ+QeTNVaI2Wn7NmamchfkC+kF9sXXvEPg8h9 X-Gm-Message-State: AOJu0YzbQtGoETqMwjnOncx7IvryBG7W8eP3Qv7I8cZvfASBs7t6OUjr ZoFxMpGLgLIOQ0joFOILZAKdjPDO1O5PwDOM02DmIV2WW6mgZV0J7zrsJw== X-Google-Smtp-Source: AGHT+IGyxIMewG7i4MlRC9JERyzn2OCdjZOiNESc/L67k1t++OLQ+N4oSK1TAt4PvDwgj2Vp/uw6Gg== X-Received: by 2002:a05:6870:a111:b0:261:1ffb:4ab2 with SMTP id 586e51a60fabf-26fe5a9d6bfmr6877271fac.20.1723707911371; Thu, 15 Aug 2024 00:45:11 -0700 (PDT) Received: from carrot.. (i222-151-34-139.s42.a014.ap.plala.or.jp. [222.151.34.139]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7127add721dsm584767b3a.42.2024.08.15.00.45.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2024 00:45:10 -0700 (PDT) From: Ryusuke Konishi To: Andrew Morton Cc: linux-nilfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/4] nilfs2: add support for FS_IOC_GETFSLABEL Date: Thu, 15 Aug 2024 16:44:07 +0900 Message-Id: <20240815074408.5550-4-konishi.ryusuke@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240815074408.5550-1-konishi.ryusuke@gmail.com> References: <20240815074408.5550-1-konishi.ryusuke@gmail.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" Implement support for FS_IOC_GETFSLABEL ioctl to read filesystem label. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/ioctl.c | 27 +++++++++++++++++++++++++++ fs/nilfs2/nilfs.h | 12 ++++++++++++ 2 files changed, 39 insertions(+) diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index 8be471ce4f19..b5c6a50d6d5d 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -17,6 +17,7 @@ #include /* mnt_want_write_file(), mnt_drop_write_file() */ #include #include +#include #include "nilfs.h" #include "segment.h" #include "bmap.h" @@ -1266,6 +1267,29 @@ static int nilfs_ioctl_set_suinfo(struct inode *inod= e, struct file *filp, return ret; } =20 +/** + * nilfs_ioctl_get_fslabel - get the volume name of the file system + * @sb: super block instance + * @argp: pointer to userspace memory where the volume name should be stor= ed + * + * Return: 0 on success, %-EFAULT if copying to userspace memory fails. + */ +static int nilfs_ioctl_get_fslabel(struct super_block *sb, void __user *ar= gp) +{ + struct the_nilfs *nilfs =3D sb->s_fs_info; + char label[NILFS_MAX_VOLUME_NAME + 1]; + + BUILD_BUG_ON(NILFS_MAX_VOLUME_NAME >=3D FSLABEL_MAX); + + down_read(&nilfs->ns_sem); + memtostr_pad(label, nilfs->ns_sbp[0]->s_volume_name); + up_read(&nilfs->ns_sem); + + if (copy_to_user(argp, label, sizeof(label))) + return -EFAULT; + return 0; +} + long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode =3D file_inode(filp); @@ -1308,6 +1332,8 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd,= unsigned long arg) return nilfs_ioctl_set_alloc_range(inode, argp); case FITRIM: return nilfs_ioctl_trim_fs(inode, argp); + case FS_IOC_GETFSLABEL: + return nilfs_ioctl_get_fslabel(inode->i_sb, argp); default: return -ENOTTY; } @@ -1334,6 +1360,7 @@ long nilfs_compat_ioctl(struct file *filp, unsigned i= nt cmd, unsigned long arg) case NILFS_IOCTL_RESIZE: case NILFS_IOCTL_SET_ALLOC_RANGE: case FITRIM: + case FS_IOC_GETFSLABEL: break; default: return -ENOIOCTLCMD; diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h index 4017f7856440..3097490b6621 100644 --- a/fs/nilfs2/nilfs.h +++ b/fs/nilfs2/nilfs.h @@ -103,6 +103,18 @@ enum { NILFS_SB_COMMIT_ALL /* Commit both super blocks */ }; =20 +/** + * define NILFS_MAX_VOLUME_NAME - maximum number of characters (bytes) in a + * file system volume name + * + * Defined by the size of the volume name field in the on-disk superblocks. + * This volume name does not include the terminating NULL byte if the stri= ng + * length matches the field size, so use (NILFS_MAX_VOLUME_NAME + 1) for t= he + * size of the buffer that requires a NULL byte termination. + */ +#define NILFS_MAX_VOLUME_NAME \ + sizeof_field(struct nilfs_super_block, s_volume_name) + /* * Macros to check inode numbers */ --=20 2.34.1 From nobody Sun Feb 8 05:42:21 2026 Received: from mail-oi1-f176.google.com (mail-oi1-f176.google.com [209.85.167.176]) (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 35B1C19D88A; Thu, 15 Aug 2024 07:45:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707917; cv=none; b=Zuv3av5QbrqXm3kUsDWETDfhxmNxNewHtw9/VFWWxL8t/1JPVG2JGfbvJiOSVg+8/VYTUyQONlQaZaktGC6peDG0J1YErm2q+T+blTlo/oLddfYIgDMebwkxszdqT6dvsNk32TWWhlRizOcTOcDVrvZErHz3GCgXw2l9RP0ECcg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723707917; c=relaxed/simple; bh=XRm/Hh9LpO+CU7azMzRcjb/D/KLYwphLujSoP1+9cpk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=C/k21SQZeN/pD6Jy3Y3zOJv7XgmtWJX/SKEbrjJ6qMbhrAry5fjvF7AZDQSSC7EJq0H4Fr/iQWl+RnySc5yH+dvjqGjZqKUqrkJc7WStiAY4DHyh76kADHEkka8+euCwptW7Sx4165GPWCU99vcIbVYctpFgFGBs2leY3bPQ9kA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Iu7PsNve; arc=none smtp.client-ip=209.85.167.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Iu7PsNve" Received: by mail-oi1-f176.google.com with SMTP id 5614622812f47-3db1e21b0e4so401132b6e.2; Thu, 15 Aug 2024 00:45:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1723707915; x=1724312715; 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=TLkgFkP50yQCZ9OQre3ESLs2M2JG8masVEc+QrHO/IY=; b=Iu7PsNveybn7IRk7ZRE8FhrW+QzagGqjl3T99ueNWW3PiShIcFHadxbudnXwQOg+RR 2wdgHBa7HwMJBBNiHdNxk/5MZsT3iuU07ZrvDtLa7TmN5EgB1SU0L0P2wqxMNW1DGlvq eueHtlFVn1fMeklYMPPOf8A+A13zPleIOzqWD+sfwoupewr6OdcY+2jXotRZZc5x1KVS YUwCbBWWcYeQNypRfikEPq01wQHVUTFDyEAn9G+Z5baf2RDK3Umb8fl2uXd+jUy0oU7h rWT266vXWZHUeNqeURAcsfsVr4ZNBbts5qey11oU3ytJCUGG153IyHJlXQrCueXHgJSV arnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723707915; x=1724312715; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=TLkgFkP50yQCZ9OQre3ESLs2M2JG8masVEc+QrHO/IY=; b=Brl+uNjitgC4b6R+pBJpiaynCNAmgLKKyJ6fVPOO9rppBLJO3qY6nob6+jP0/8eZKY nL/V4kqLyZXcxodSqfuSnMPGL6L7cVD8zQZKoMChLCLl9V6xqleGvM00R32ByFUjMrfQ 0x8FW0m7kKI/RED7eSOgrFlZfaItK/yeixIqs3d5AnftbP+fbv7yNKKv5uV+ayaRMH97 vTPaqMIlVcRZznFYi4GFKi2dKHTEFG41jfaSHk37OjfzLKuMVD2NYU0JM72L7QaxRuGC CzpiWx9LNZeTYkGR7aX2xkm9y9t5E3w1qBdZQ5QxiqDXLOD5bBa6JQ999U2G3ndVEAR5 4DxA== X-Forwarded-Encrypted: i=1; AJvYcCXl4YbLu0d/najM8tH+wMnGtlXRD4q0CrIpvDJBd3+3AK8A05GCNGW2sBaWhMMPGQLbvVcvSIKRb4jcBB/xu+4LoPcY3HFn6DLSTwwp X-Gm-Message-State: AOJu0YzWUXtnYaaJxpscp9wnsroKFagWYtq4XKwROmIW+XgRHwo4/aCx bnBojcezrx5zW8M82nAmXvqllvyx8iRqSZ1rfRaA2NXuyNRh6Dye X-Google-Smtp-Source: AGHT+IEdYGqEmS3GdMnyNDBtnW/m3aKZ7RZs9uygKYTBvuJ52C5cYDq0fjT1bK2SoBCtVLlnuAR0oQ== X-Received: by 2002:a05:6870:1cc:b0:26c:5312:a140 with SMTP id 586e51a60fabf-26fe5a41704mr6003339fac.17.1723707915017; Thu, 15 Aug 2024 00:45:15 -0700 (PDT) Received: from carrot.. (i222-151-34-139.s42.a014.ap.plala.or.jp. [222.151.34.139]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7127add721dsm584767b3a.42.2024.08.15.00.45.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2024 00:45:14 -0700 (PDT) From: Ryusuke Konishi To: Andrew Morton Cc: linux-nilfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 4/4] nilfs2: add support for FS_IOC_SETFSLABEL Date: Thu, 15 Aug 2024 16:44:08 +0900 Message-Id: <20240815074408.5550-5-konishi.ryusuke@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240815074408.5550-1-konishi.ryusuke@gmail.com> References: <20240815074408.5550-1-konishi.ryusuke@gmail.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" Implement support for FS_IOC_SETFSLABEL ioctl to write filesystem label. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/ioctl.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c index b5c6a50d6d5d..297989e51ee6 100644 --- a/fs/nilfs2/ioctl.c +++ b/fs/nilfs2/ioctl.c @@ -1290,6 +1290,68 @@ static int nilfs_ioctl_get_fslabel(struct super_bloc= k *sb, void __user *argp) return 0; } =20 +/** + * nilfs_ioctl_set_fslabel - set the volume name of the file system + * @sb: super block instance + * @filp: file object + * @argp: pointer to userspace memory that contains the volume name + * + * Return: 0 on success, or the following negative error code on failure. + * * %-EFAULT - Error copying input data. + * * %-EINVAL - Label length exceeds record size in superblock. + * * %-EIO - I/O error. + * * %-EPERM - Operation not permitted (insufficient permissions). + * * %-EROFS - Read only file system. + */ +static int nilfs_ioctl_set_fslabel(struct super_block *sb, struct file *fi= lp, + void __user *argp) +{ + char label[NILFS_MAX_VOLUME_NAME + 1]; + struct the_nilfs *nilfs =3D sb->s_fs_info; + struct nilfs_super_block **sbp; + size_t len; + int ret; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + ret =3D mnt_want_write_file(filp); + if (ret) + return ret; + + if (copy_from_user(label, argp, NILFS_MAX_VOLUME_NAME + 1)) { + ret =3D -EFAULT; + goto out_drop_write; + } + + len =3D strnlen(label, NILFS_MAX_VOLUME_NAME + 1); + if (len > NILFS_MAX_VOLUME_NAME) { + nilfs_err(sb, "unable to set label with more than %zu bytes", + NILFS_MAX_VOLUME_NAME); + ret =3D -EINVAL; + goto out_drop_write; + } + + down_write(&nilfs->ns_sem); + sbp =3D nilfs_prepare_super(sb, false); + if (unlikely(!sbp)) { + ret =3D -EIO; + goto out_unlock; + } + + strtomem_pad(sbp[0]->s_volume_name, label, 0); + if (sbp[1]) + strtomem_pad(sbp[1]->s_volume_name, label, 0); + + ret =3D nilfs_commit_super(sb, NILFS_SB_COMMIT_ALL); + +out_unlock: + up_write(&nilfs->ns_sem); +out_drop_write: + mnt_drop_write_file(filp); + return ret; +} + long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct inode *inode =3D file_inode(filp); @@ -1334,6 +1396,8 @@ long nilfs_ioctl(struct file *filp, unsigned int cmd,= unsigned long arg) return nilfs_ioctl_trim_fs(inode, argp); case FS_IOC_GETFSLABEL: return nilfs_ioctl_get_fslabel(inode->i_sb, argp); + case FS_IOC_SETFSLABEL: + return nilfs_ioctl_set_fslabel(inode->i_sb, filp, argp); default: return -ENOTTY; } @@ -1361,6 +1425,7 @@ long nilfs_compat_ioctl(struct file *filp, unsigned i= nt cmd, unsigned long arg) case NILFS_IOCTL_SET_ALLOC_RANGE: case FITRIM: case FS_IOC_GETFSLABEL: + case FS_IOC_SETFSLABEL: break; default: return -ENOIOCTLCMD; --=20 2.34.1