From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 E2ED3295502 for ; Mon, 12 May 2025 13:23:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747056183; cv=none; b=A63C09yRSzWDGOw6fO6bMSu1ejBEI0A6P6HnODRYQpfB436mDoS4Qx46isf2OaMFBnVDyX9XFNT6tcYkjVl489mBZDIcww8E/Neu2MR2arlQkIUKrXDNmxzr78moitlqfGyu36SUp3zelcF1h/Y1VHWFLGvTsKt9kmze7VzkX2Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747056183; c=relaxed/simple; bh=bzJZzvvRpjn9CYUnburWeDj8PO5yPP+Ob2vNmYc/qsA=; h=From:Date:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VzVcMdrdhgD2Ca6p2tX2mv2T6J/aVu7NqJHyphI7nsn0oZIduZMl7ay1mS3CnGv/OV1ZkEIStqB1+eacD+2LO1oLdtllc+YNdKE9vqxO+Z53W59QCYW5vBurr51j4/aG/4nYSCGmiUhVZIiWF6HwzfAuKx+papqIej94pAISdlg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=LMY94B9/; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="LMY94B9/" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1747056181; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=Rt9GtFBQJVx2og2U+6x9mcRi6vq6T7dh1csKu94DEVk=; b=LMY94B9/5SxJBQ6j1P9ZsT4nkm6snHPEBbE1NKTxHyn3vLrQwItsEou0V+k76qh8IWYWPx Cd7VZXPoQgwXS3ISOTVfXO+UhzmnBp2qRtj5gofEFQZMznbfhhPCB6hio5Tvc8+h0NsC2y hgYbnbmEdwHiXtvc8KynVobELYcT8zA= Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-622-8eDHgat2OdCdEaXbTPj02A-1; Mon, 12 May 2025 09:22:59 -0400 X-MC-Unique: 8eDHgat2OdCdEaXbTPj02A-1 X-Mimecast-MFC-AGG-ID: 8eDHgat2OdCdEaXbTPj02A_1747056177 Received: by mail-ej1-f70.google.com with SMTP id a640c23a62f3a-ad2363a3949so228007966b.0 for ; Mon, 12 May 2025 06:22:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1747056177; x=1747660977; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=Rt9GtFBQJVx2og2U+6x9mcRi6vq6T7dh1csKu94DEVk=; b=HqQbLFSTHai4Bwi/9DCIebavNUIqVaoeZMJG3+dFfzFTogrz84WoE2DxpnB6Uwkid0 HPB0LdR3wyJqfTZhDGARMh6QEKF28z0nfYkADEYeTE7PuALStiMdal2KKxFpcXGkvxfc DuL2pxHgLJuS0ERrJUnRm7SLcoGm4B4GL208f9KBGc/QBCc5gm+a2JRz0YXwQHWYaxjr vb9pkM4tJbxJnO3wR31m3e3dtbBqUpipdXBwuANfpHLfzWUrpaVxMmfZY0QcXPHZLb7V IP+HzQE1HeXgT5fzr8abZh7Q3bCMehz8sUbeHts0zGHhyCUKZKSVIhJMCw6TiyRoeJgo zAaQ== X-Forwarded-Encrypted: i=1; AJvYcCV74BrDTBpsBPFMWXPgTZGS5Gm0dO0bWjZJyVuSQwcnideTe3HKCgh3IYPN++Qo7LPJHB3opvDZ8Q==@vger.kernel.org X-Gm-Message-State: AOJu0YzHHgG+Dhwt6/oEsUoocrAG7ULLAaLDII9YihCEUygvDEOxTGlX v4N8hh9i1GgCOz/ZnUbNTuu1+B2Jn6WJ8LcAOYtcBay19Sa70Yv/5tz0a8Kc1JIpLYuLskHb3rK o+RKclIEhaqn4imhaiVMhkiIKz3H4TfwcEMB6WKGpkIYg0af7y20agus= X-Gm-Gg: ASbGncsGaS+aZ5Y95j4nXAwp5KaMFMphtUKFZtPbKVS22ilJdGmn/KAGBpVUOd+so5W h0OAusMt+WiHE+5yf3ICGe2ZdAsZpjAlxKzocZKkFYoHhlxfXVcFoC+ZlAIfZ3KP3M7Sm57RD9c OLOZ9dvOtooczWwm1CRYc+JC4ZXZxW9Krk8vmDPfWbNT/5/1LOgZ8hH1TJxLigP4KSLEk9jTHbG dZJCrrbwApRC5/Y4xQSeuRVtABJRUWmK9ZiqFg/Zx4vpMVnQ9dIgOVY88wPGci6bl1jU59Yqrsl vO8HB4p4gEDIj29Bo1I/U3Xr+iay/WLu960C1P30 X-Received: by 2002:a17:907:6ea4:b0:ad4:d00f:b4ca with SMTP id a640c23a62f3a-ad4d00fb8fcmr36849866b.50.1747056177251; Mon, 12 May 2025 06:22:57 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFJ1H/zptS/AHQGJ0FK52hePcKQfFfrpXhxDrhZE1E6E4AE2JiwqXtAXQ7n2gKkCn93DDW/NA== X-Received: by 2002:a17:907:6ea4:b0:ad4:d00f:b4ca with SMTP id a640c23a62f3a-ad4d00fb8fcmr36835166b.50.1747056175640; Mon, 12 May 2025 06:22:55 -0700 (PDT) Received: from thinky (109-92-26-237.static.isp.telekom.rs. [109.92.26.237]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ad2197bd28dsm613933766b.128.2025.05.12.06.22.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 May 2025 06:22:55 -0700 (PDT) From: Andrey Albershteyn X-Google-Original-From: Andrey Albershteyn Date: Mon, 12 May 2025 15:22:52 +0200 To: Richard Henderson , Matt Turner , Russell King , Catalin Marinas , Will Deacon , Geert Uytterhoeven , Michal Simek , Thomas Bogendoerfer , "James E.J. Bottomley" , Helge Deller , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , "David S. Miller" , Andreas Larsson , Andy Lutomirski , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Chris Zankel , Max Filippov , Alexander Viro , Christian Brauner , Jan Kara , =?utf-8?Q?Micka=C3=ABl_Sala=C3=BCn?= , =?utf-8?Q?G=C3=BCnther?= Noack , Arnd Bergmann , Pali =?utf-8?B?Um9ow6Fy?= , Paul Moore , James Morris , "Serge E. Hallyn" , Stephen Smalley , Ondrej Mosnacek , Tyler Hicks , Miklos Szeredi , Amir Goldstein Cc: linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-api@vger.kernel.org, linux-arch@vger.kernel.org, selinux@vger.kernel.org, ecryptfs@vger.kernel.org, linux-unionfs@vger.kernel.org, linux-xfs@vger.kernel.org, Andrey Albershteyn Subject: [PATCH v5 5/7] fs: make vfs_fileattr_[get|set] return -EOPNOSUPP Message-ID: <20250512-xattrat-syscall-v5-5-ffbc7c477332@kernel.org> X-Mailer: b4 0.15-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=3357; i=aalbersh@kernel.org; h=from:subject:message-id; bh=xNZgMi4eRRk641oOEdpKdfQ/bF05YfbIRMmgusqStnI=; b=owJ4nJvAy8zAJea2/JXEGuOHHIyn1ZIYMhS/7gpUUlnz86nTDU79jiMuhmaSU5Y0X4uZXFdRe Vmc8dGRozkdpSwMYlwMsmKKLOuktaYmFUnlHzGokYeZw8oEMoSBi1MAJtIRzsjwXWjjY7HXi7bl PFdbzGTT97Nn+gxH75Rvx4wCZ9h+erijleGfefXLzfMlHhZ1SRydlrlHbP8WO6cPJmv/zTu7xuT VWu893ACrBku/ X-Developer-Key: i=aalbersh@kernel.org; a=openpgp; fpr=AE1B2A9562721A6FC4307C1F46A7EA18AC33E108 References: <20250512-xattrat-syscall-v5-0-ffbc7c477332@kernel.org> Precedence: bulk X-Mailing-List: ecryptfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250512-xattrat-syscall-v5-0-ffbc7c477332@kernel.org> Future patches will add new syscalls which use these functions. As this interface won't be used for ioctls only the EOPNOSUPP is more appropriate return code. This patch coverts return code from ENOIOCTLCMD to EOPNOSUPP for vfs_fileattr_get and vfs_fileattr_set. To save old behavior translate EOPNOSUPP back for current users - overlayfs, encryptfs and fs/ioctl.c. Signed-off-by: Andrey Albershteyn --- fs/ecryptfs/inode.c | 8 +++++++- fs/file_attr.c | 12 ++++++++++-- fs/overlayfs/inode.c | 2 +- 3 files changed, 18 insertions(+), 4 deletions(-) diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index 51a5c54eb740..6bf08ff4d7f7 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -1124,7 +1124,13 @@ static int ecryptfs_removexattr(struct dentry *dentry, struct inode *inode, static int ecryptfs_fileattr_get(struct dentry *dentry, struct fileattr *fa) { - return vfs_fileattr_get(ecryptfs_dentry_to_lower(dentry), fa); + int rc; + + rc = vfs_fileattr_get(ecryptfs_dentry_to_lower(dentry), fa); + if (rc == -EOPNOTSUPP) + rc = -ENOIOCTLCMD; + + return rc; } static int ecryptfs_fileattr_set(struct mnt_idmap *idmap, diff --git a/fs/file_attr.c b/fs/file_attr.c index d9eab553dc25..d696f440fa4f 100644 --- a/fs/file_attr.c +++ b/fs/file_attr.c @@ -79,7 +79,7 @@ int vfs_fileattr_get(struct dentry *dentry, struct fileattr *fa) int error; if (!inode->i_op->fileattr_get) - return -ENOIOCTLCMD; + return -EOPNOTSUPP; error = security_inode_file_getattr(dentry, fa); if (error) @@ -239,7 +239,7 @@ int vfs_fileattr_set(struct mnt_idmap *idmap, struct dentry *dentry, int err; if (!inode->i_op->fileattr_set) - return -ENOIOCTLCMD; + return -EOPNOTSUPP; if (!inode_owner_or_capable(idmap, inode)) return -EPERM; @@ -281,6 +281,8 @@ int ioctl_getflags(struct file *file, unsigned int __user *argp) int err; err = vfs_fileattr_get(file->f_path.dentry, &fa); + if (err == -EOPNOTSUPP) + err = -ENOIOCTLCMD; if (!err) err = put_user(fa.flags, argp); return err; @@ -302,6 +304,8 @@ int ioctl_setflags(struct file *file, unsigned int __user *argp) fileattr_fill_flags(&fa, flags); err = vfs_fileattr_set(idmap, dentry, &fa); mnt_drop_write_file(file); + if (err == -EOPNOTSUPP) + err = -ENOIOCTLCMD; } } return err; @@ -314,6 +318,8 @@ int ioctl_fsgetxattr(struct file *file, void __user *argp) int err; err = vfs_fileattr_get(file->f_path.dentry, &fa); + if (err == -EOPNOTSUPP) + err = -ENOIOCTLCMD; if (!err) err = copy_fsxattr_to_user(&fa, argp); @@ -334,6 +340,8 @@ int ioctl_fssetxattr(struct file *file, void __user *argp) if (!err) { err = vfs_fileattr_set(idmap, dentry, &fa); mnt_drop_write_file(file); + if (err == -EOPNOTSUPP) + err = -ENOIOCTLCMD; } } return err; diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c index 6f0e15f86c21..096d44712bb1 100644 --- a/fs/overlayfs/inode.c +++ b/fs/overlayfs/inode.c @@ -721,7 +721,7 @@ int ovl_real_fileattr_get(const struct path *realpath, struct fileattr *fa) return err; err = vfs_fileattr_get(realpath->dentry, fa); - if (err == -ENOIOCTLCMD) + if (err == -EOPNOTSUPP) err = -ENOTTY; return err; } -- 2.47.2 -- - Andrey