From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ED026C54FD0 for ; Tue, 21 Apr 2020 13:58:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C12B020644 for ; Tue, 21 Apr 2020 13:58:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="DZYXCXls" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728422AbgDUN6M (ORCPT ); Tue, 21 Apr 2020 09:58:12 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:49746 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728960AbgDUN6B (ORCPT ); Tue, 21 Apr 2020 09:58:01 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587477479; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jPnP4qV6sDaGZ2bSbejYPzydlvKfgMg0o/pB9q3go8E=; b=DZYXCXlsv0fh6UE16VFVl0cTQL17cz0iEU4FclpHzRPbbxDsNK0ulE0prgaf88dYflmgiK 3IJKX8PwWmEtRTDlP8MFrLBjfCkd5YcQn7YuaP/1WW6MOCz9B2UG6Y4u9kL4okZ+tFx3HZ oRlpmP3dK7VrCKcwGhfTl34d5DD4oVs= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-244-A1ZdssvaOJWK8YtJ77g31A-1; Tue, 21 Apr 2020 09:57:55 -0400 X-MC-Unique: A1ZdssvaOJWK8YtJ77g31A-1 Received: by mail-wr1-f71.google.com with SMTP id r17so7531779wrg.19 for ; Tue, 21 Apr 2020 06:57:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=jPnP4qV6sDaGZ2bSbejYPzydlvKfgMg0o/pB9q3go8E=; b=PCKD6WOXDGeO5THnlvuc3Vtf6+YtSyz9qPA6oPu2EEusMIE2rDyaS/1rNhm8ey7Y+/ OhOkUGMBO13Qev2YwmLkb4/xOKKdQ/YOu76OG9urLgDDnNFdgv6GnU/ZwsxrVk4MKxmb P5cLr94QzTZDeLb1TM9HDcIrGXi9MgLCAx2e9Ioi/okP/CCwuCPOlhV7wKZ8h7HrZVF7 3nJyfJLYaBMdpFpuptgNxJ+QuJmx+CBRxgZ8BQU3mmlT/Ar689l0gzXBVmf0h6jIULCE 6tmHUBn1aUvvpFOKI/sZaC4jEpfxe/+wt0c/XObIfa/PDeRt1Bl46tEW5O+4L5e2yOEO eiKw== X-Gm-Message-State: AGi0PuZRxKIYI90TKOBbuNqC8+5z8+FC9DD3UXrsMm1gZkehRiU0JsrL 6lRCAvRxrRjizxaT1yJTI+dat6+vE8xRNhT31Fwzk3MnW1RoF1qNoDRvyPd8zDlH89/QZE7ey2Z kk7uAIuHSSRo/SuvKXc3BUhpAUVlr0zgD5hvg X-Received: by 2002:a05:600c:da:: with SMTP id u26mr5188181wmm.48.1587477474539; Tue, 21 Apr 2020 06:57:54 -0700 (PDT) X-Google-Smtp-Source: APiQypImms4WydeI5+8l3z5lWKRrEMa+0XfWFGcGeKI2hzBQZu8YXbxqfuv1YC/rok2n8KUUpE7+Vg== X-Received: by 2002:a05:600c:da:: with SMTP id u26mr5188144wmm.48.1587477474268; Tue, 21 Apr 2020 06:57:54 -0700 (PDT) Received: from localhost.localdomain.com ([194.230.155.194]) by smtp.gmail.com with ESMTPSA id f23sm3562989wml.4.2020.04.21.06.57.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Apr 2020 06:57:53 -0700 (PDT) From: Emanuele Giuseppe Esposito To: linux-fsdevel@vger.kernel.org Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Frederic Barrat , Andrew Donnellan , Arnd Bergmann , Greg Kroah-Hartman , "Manoj N. Kumar" , "Matthew R. Ochs" , Uma Krishnan , "James E.J. Bottomley" , "Martin K. Petersen" , Alexander Viro , Joel Becker , Christoph Hellwig , "Rafael J. Wysocki" , John Johansen , James Morris , "Serge E. Hallyn" , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-scsi@vger.kernel.org, linux-security-module@vger.kernel.org, Paolo Bonzini , Emanuele Giuseppe Esposito Subject: [PATCH v2 7/7] tracefs: switch to simplefs inode creation API Date: Tue, 21 Apr 2020 15:57:41 +0200 Message-Id: <20200421135741.30657-5-eesposit@redhat.com> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200421135119.30007-1-eesposit@redhat.com> References: <20200421135119.30007-1-eesposit@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8bit Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: There is no semantic change intended; the code in the libfs.c functions in fact was derived from debugfs and tracefs code. Signed-off-by: Emanuele Giuseppe Esposito --- fs/tracefs/inode.c | 86 ++++------------------------------------------ 1 file changed, 7 insertions(+), 79 deletions(-) diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 370eb38ff1ad..bceaa4f45da2 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -308,57 +308,6 @@ static struct file_system_type trace_fs_type = { }; MODULE_ALIAS_FS("tracefs"); -static struct dentry *start_creating(const char *name, struct dentry *parent) -{ - struct dentry *dentry; - int error; - - pr_debug("tracefs: creating file '%s'\n",name); - - error = simple_pin_fs(&tracefs, &trace_fs_type); - if (error) - return ERR_PTR(error); - - /* If the parent is not specified, we create it in the root. - * We need the root dentry to do this, which is in the super - * block. A pointer to that is in the struct vfsmount that we - * have around. - */ - if (!parent) - parent = tracefs.mount->mnt_root; - - inode_lock(parent->d_inode); - if (unlikely(IS_DEADDIR(parent->d_inode))) - dentry = ERR_PTR(-ENOENT); - else - dentry = lookup_one_len(name, parent, strlen(name)); - if (!IS_ERR(dentry) && dentry->d_inode) { - dput(dentry); - dentry = ERR_PTR(-EEXIST); - } - - if (IS_ERR(dentry)) { - inode_unlock(parent->d_inode); - simple_release_fs(&tracefs); - } - - return dentry; -} - -static struct dentry *failed_creating(struct dentry *dentry) -{ - inode_unlock(dentry->d_parent->d_inode); - dput(dentry); - simple_release_fs(&tracefs); - return NULL; -} - -static struct dentry *end_creating(struct dentry *dentry) -{ - inode_unlock(dentry->d_parent->d_inode); - return dentry; -} - /** * tracefs_create_file - create a file in the tracefs filesystem * @name: a pointer to a string containing the name of the file to create. @@ -395,49 +344,28 @@ struct dentry *tracefs_create_file(const char *name, umode_t mode, if (security_locked_down(LOCKDOWN_TRACEFS)) return NULL; - if (!(mode & S_IFMT)) - mode |= S_IFREG; - BUG_ON(!S_ISREG(mode)); - dentry = start_creating(name, parent); - + dentry = simplefs_create_file(&tracefs, &trace_fs_type, + name, mode, parent, data, &inode); if (IS_ERR(dentry)) return NULL; - inode = tracefs_get_inode(dentry->d_sb); - if (unlikely(!inode)) - return failed_creating(dentry); - - inode->i_mode = mode; inode->i_fop = fops ? fops : &tracefs_file_operations; - inode->i_private = data; - d_instantiate(dentry, inode); - fsnotify_create(dentry->d_parent->d_inode, dentry); - return end_creating(dentry); + return simplefs_finish_dentry(dentry, inode); } static struct dentry *__create_dir(const char *name, struct dentry *parent, const struct inode_operations *ops) { - struct dentry *dentry = start_creating(name, parent); + struct dentry *dentry; struct inode *inode; + dentry = simplefs_create_dir(&tracefs, &trace_fs_type, + name, 0755, parent, &inode); if (IS_ERR(dentry)) return NULL; - inode = tracefs_get_inode(dentry->d_sb); - if (unlikely(!inode)) - return failed_creating(dentry); - - inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; inode->i_op = ops; - inode->i_fop = &simple_dir_operations; - - /* directory inodes start off with i_nlink == 2 (for "." entry) */ - inc_nlink(inode); - d_instantiate(dentry, inode); - inc_nlink(dentry->d_parent->d_inode); - fsnotify_mkdir(dentry->d_parent->d_inode, dentry); - return end_creating(dentry); + return simplefs_finish_dentry(dentry, inode); } /** -- 2.25.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00764C54FC9 for ; Tue, 21 Apr 2020 14:41:39 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5712D206D4 for ; Tue, 21 Apr 2020 14:41:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="YGLRkvXM"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="OzpHEZaD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5712D206D4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4965qL4DmtzDqDl for ; Wed, 22 Apr 2020 00:41:34 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=redhat.com (client-ip=207.211.31.120; helo=us-smtp-1.mimecast.com; envelope-from=eesposit@redhat.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=YGLRkvXM; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=OzpHEZaD; dkim-atps=neutral Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4964s66hWCzDqfy for ; Tue, 21 Apr 2020 23:58:02 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587477479; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HdQnJbrJQhcdgn4KZAPJXioNX2auoHhY5SDkJ449hT8=; b=YGLRkvXM48UfylPsSVx3XHwdqWO1NZx7KRp2Y8QY4yMDni/Z2ShRCqn6wY5VH2T7il8uF1 L9WC6NTwhxomceUO7QK28aY+vW5Dx0+lOwcGzM44CUg6pE/NpE+bkPQiL8m7ReFwTs6V58 N3Xqb4qd7K10wbE5FjXoK1u+KXeQNi4= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587477480; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HdQnJbrJQhcdgn4KZAPJXioNX2auoHhY5SDkJ449hT8=; b=OzpHEZaDMfKc6plZq3wKxtL+vPptfgy8ax153apofFnCShT5N5JqlktXOSYOseh5h/YCfD 1bgm4qfG5WZuHhWS/w4j3ng3gnIUkmOg8CwJtP5Fwho64GM1M+WqBky2WxJL2cJtiMpvKg Lwqtx6AXYuM8/nukJzkpIe5JwBYvvsE= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-223-2l33L_KSMUi11To8cRq7Yw-1; Tue, 21 Apr 2020 09:57:58 -0400 X-MC-Unique: 2l33L_KSMUi11To8cRq7Yw-1 Received: by mail-wr1-f71.google.com with SMTP id p16so7523084wro.16 for ; Tue, 21 Apr 2020 06:57:58 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=jPnP4qV6sDaGZ2bSbejYPzydlvKfgMg0o/pB9q3go8E=; b=SWvpWI0s5ReqTZdDWglGAJqXTcwVNGxbZNkLTN9IBbGWRY60S7igbnRvNMgaiQZz4H LaHdFY2QsUqHeHOl7xdhLhsGmBgDNvEHgwTjsCUOSx+eedrMYBR+Dq7xo4RRT8lsgdTP KFyCVsrQRixWtglpZCZp9/5Bo9Rt4w3A3Rl2MELI1E4erfUUqcAU45nuoe/VrlZOZl8d kQ1zLih7/ONIcXkCGLecF582poLSYha/F3Z5PFzvQOQhUMlB+Xdungg59ftKAnCPidah iJtQCE99eghoJJBrQPVWaNAHhTYv/5qs6VCaKetjgd84VNdgtM0J3kpHD2oTudcIsusY qzxQ== X-Gm-Message-State: AGi0PuYaKGsDp9u3Y6R/9TzN0TfeE2RHgL0Lcg3M/0nJ8Nf4VBEdMsBd YL/WWqixKUu6X5K4U+l7Wcw5C4Yl/Ca4NMFCIa4VKE648dt6vsdgyQ6NqdF/GwP323HksdD82nJ aXhDLKEugpkek/+6l7KJZvbqCZQ== X-Received: by 2002:a05:600c:da:: with SMTP id u26mr5188172wmm.48.1587477474538; Tue, 21 Apr 2020 06:57:54 -0700 (PDT) X-Google-Smtp-Source: APiQypImms4WydeI5+8l3z5lWKRrEMa+0XfWFGcGeKI2hzBQZu8YXbxqfuv1YC/rok2n8KUUpE7+Vg== X-Received: by 2002:a05:600c:da:: with SMTP id u26mr5188144wmm.48.1587477474268; Tue, 21 Apr 2020 06:57:54 -0700 (PDT) Received: from localhost.localdomain.com ([194.230.155.194]) by smtp.gmail.com with ESMTPSA id f23sm3562989wml.4.2020.04.21.06.57.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Apr 2020 06:57:53 -0700 (PDT) From: Emanuele Giuseppe Esposito To: linux-fsdevel@vger.kernel.org Subject: [PATCH v2 7/7] tracefs: switch to simplefs inode creation API Date: Tue, 21 Apr 2020 15:57:41 +0200 Message-Id: <20200421135741.30657-5-eesposit@redhat.com> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200421135119.30007-1-eesposit@redhat.com> References: <20200421135119.30007-1-eesposit@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Rafael J. Wysocki" , David Airlie , dri-devel@lists.freedesktop.org, Christoph Hellwig , Andrew Donnellan , Emanuele Giuseppe Esposito , linux-scsi@vger.kernel.org, James Morris , "Serge E. Hallyn" , Daniel Vetter , Arnd Bergmann , "James E.J. Bottomley" , Maarten Lankhorst , Maxime Ripard , "Manoj N. Kumar" , Alexander Viro , "Matthew R. Ochs" , Uma Krishnan , John Johansen , "Martin K. Petersen" , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, Thomas Zimmermann , Frederic Barrat , Paolo Bonzini , linuxppc-dev@lists.ozlabs.org, Joel Becker Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" There is no semantic change intended; the code in the libfs.c functions in fact was derived from debugfs and tracefs code. Signed-off-by: Emanuele Giuseppe Esposito --- fs/tracefs/inode.c | 86 ++++------------------------------------------ 1 file changed, 7 insertions(+), 79 deletions(-) diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 370eb38ff1ad..bceaa4f45da2 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -308,57 +308,6 @@ static struct file_system_type trace_fs_type =3D { }; MODULE_ALIAS_FS("tracefs"); =20 -static struct dentry *start_creating(const char *name, struct dentry *pare= nt) -{ -=09struct dentry *dentry; -=09int error; - -=09pr_debug("tracefs: creating file '%s'\n",name); - -=09error =3D simple_pin_fs(&tracefs, &trace_fs_type); -=09if (error) -=09=09return ERR_PTR(error); - -=09/* If the parent is not specified, we create it in the root. -=09 * We need the root dentry to do this, which is in the super -=09 * block. A pointer to that is in the struct vfsmount that we -=09 * have around. -=09 */ -=09if (!parent) -=09=09parent =3D tracefs.mount->mnt_root; - -=09inode_lock(parent->d_inode); -=09if (unlikely(IS_DEADDIR(parent->d_inode))) -=09=09dentry =3D ERR_PTR(-ENOENT); -=09else -=09=09dentry =3D lookup_one_len(name, parent, strlen(name)); -=09if (!IS_ERR(dentry) && dentry->d_inode) { -=09=09dput(dentry); -=09=09dentry =3D ERR_PTR(-EEXIST); -=09} - -=09if (IS_ERR(dentry)) { -=09=09inode_unlock(parent->d_inode); -=09=09simple_release_fs(&tracefs); -=09} - -=09return dentry; -} - -static struct dentry *failed_creating(struct dentry *dentry) -{ -=09inode_unlock(dentry->d_parent->d_inode); -=09dput(dentry); -=09simple_release_fs(&tracefs); -=09return NULL; -} - -static struct dentry *end_creating(struct dentry *dentry) -{ -=09inode_unlock(dentry->d_parent->d_inode); -=09return dentry; -} - /** * tracefs_create_file - create a file in the tracefs filesystem * @name: a pointer to a string containing the name of the file to create. @@ -395,49 +344,28 @@ struct dentry *tracefs_create_file(const char *name, = umode_t mode, =09if (security_locked_down(LOCKDOWN_TRACEFS)) =09=09return NULL; =20 -=09if (!(mode & S_IFMT)) -=09=09mode |=3D S_IFREG; -=09BUG_ON(!S_ISREG(mode)); -=09dentry =3D start_creating(name, parent); - +=09dentry =3D simplefs_create_file(&tracefs, &trace_fs_type, +=09=09=09=09 name, mode, parent, data, &inode); =09if (IS_ERR(dentry)) =09=09return NULL; =20 -=09inode =3D tracefs_get_inode(dentry->d_sb); -=09if (unlikely(!inode)) -=09=09return failed_creating(dentry); - -=09inode->i_mode =3D mode; =09inode->i_fop =3D fops ? fops : &tracefs_file_operations; -=09inode->i_private =3D data; -=09d_instantiate(dentry, inode); -=09fsnotify_create(dentry->d_parent->d_inode, dentry); -=09return end_creating(dentry); +=09return simplefs_finish_dentry(dentry, inode); } =20 static struct dentry *__create_dir(const char *name, struct dentry *parent= , =09=09=09=09 const struct inode_operations *ops) { -=09struct dentry *dentry =3D start_creating(name, parent); +=09struct dentry *dentry; =09struct inode *inode; =20 +=09dentry =3D simplefs_create_dir(&tracefs, &trace_fs_type, +=09=09=09=09 name, 0755, parent, &inode); =09if (IS_ERR(dentry)) =09=09return NULL; =20 -=09inode =3D tracefs_get_inode(dentry->d_sb); -=09if (unlikely(!inode)) -=09=09return failed_creating(dentry); - -=09inode->i_mode =3D S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; =09inode->i_op =3D ops; -=09inode->i_fop =3D &simple_dir_operations; - -=09/* directory inodes start off with i_nlink =3D=3D 2 (for "." entry) */ -=09inc_nlink(inode); -=09d_instantiate(dentry, inode); -=09inc_nlink(dentry->d_parent->d_inode); -=09fsnotify_mkdir(dentry->d_parent->d_inode, dentry); -=09return end_creating(dentry); +=09return simplefs_finish_dentry(dentry, inode); } =20 /** --=20 2.25.2 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6659EC54FC9 for ; Tue, 21 Apr 2020 13:58:04 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 39AD12071C for ; Tue, 21 Apr 2020 13:58:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="YGLRkvXM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 39AD12071C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 96D686E98D; Tue, 21 Apr 2020 13:58:03 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F7426E98D for ; Tue, 21 Apr 2020 13:58:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587477479; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=HdQnJbrJQhcdgn4KZAPJXioNX2auoHhY5SDkJ449hT8=; b=YGLRkvXM48UfylPsSVx3XHwdqWO1NZx7KRp2Y8QY4yMDni/Z2ShRCqn6wY5VH2T7il8uF1 L9WC6NTwhxomceUO7QK28aY+vW5Dx0+lOwcGzM44CUg6pE/NpE+bkPQiL8m7ReFwTs6V58 N3Xqb4qd7K10wbE5FjXoK1u+KXeQNi4= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-408-xnnCcc6ZMYWH6sepn_IW2g-1; Tue, 21 Apr 2020 09:57:55 -0400 X-MC-Unique: xnnCcc6ZMYWH6sepn_IW2g-1 Received: by mail-wr1-f72.google.com with SMTP id o12so7549555wra.14 for ; Tue, 21 Apr 2020 06:57:55 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=jPnP4qV6sDaGZ2bSbejYPzydlvKfgMg0o/pB9q3go8E=; b=LRy6MdUGyXjfM17cGHKWrZBjiamB0/vq7/zFk1ld+BXQ/tjPOS7e0pPGgikEQ+p1gb EvlT33XArEkikEpOfBALy245V1Xpso1BdXj1bJ+a6+Qj+jPP1cAEff1l0YFUbr9yH5ye WyAPqJcVINc678hc8+v8pLg8PfSAYuibsML+cFbWgdVk1SRJisnhQ4/0gF63tBk+a5FE HAd11MrOlgGiVMT7uy9o+t+69e5+waeB8r9wSZ/G6+K+5A8HrBb0XvViJlA52dfZThbX 2WZFWesoHnMqtkmX6Adr7i33XcVW7YySso1GDnN87hqpbfrLrqtDv4Z8EqEnt51M93Kj yWuw== X-Gm-Message-State: AGi0PuaVQNv5pDrqpDPjXHewnGEY5CnRe3Vn3TwYj+64yodG7FMXzw8y usKl/li7I0se1ORzWURK/xswndBuNTbI9Z+AiRH0GieGAE/mTZi0rhoT1513pgrEZyhgq+fVIQA fBcEW7MWsXdq3U5VBp7H90ec+lk5l X-Received: by 2002:a05:600c:da:: with SMTP id u26mr5188192wmm.48.1587477474541; Tue, 21 Apr 2020 06:57:54 -0700 (PDT) X-Google-Smtp-Source: APiQypImms4WydeI5+8l3z5lWKRrEMa+0XfWFGcGeKI2hzBQZu8YXbxqfuv1YC/rok2n8KUUpE7+Vg== X-Received: by 2002:a05:600c:da:: with SMTP id u26mr5188144wmm.48.1587477474268; Tue, 21 Apr 2020 06:57:54 -0700 (PDT) Received: from localhost.localdomain.com ([194.230.155.194]) by smtp.gmail.com with ESMTPSA id f23sm3562989wml.4.2020.04.21.06.57.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Apr 2020 06:57:53 -0700 (PDT) From: Emanuele Giuseppe Esposito To: linux-fsdevel@vger.kernel.org Subject: [PATCH v2 7/7] tracefs: switch to simplefs inode creation API Date: Tue, 21 Apr 2020 15:57:41 +0200 Message-Id: <20200421135741.30657-5-eesposit@redhat.com> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200421135119.30007-1-eesposit@redhat.com> References: <20200421135119.30007-1-eesposit@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Rafael J. Wysocki" , David Airlie , dri-devel@lists.freedesktop.org, Christoph Hellwig , Andrew Donnellan , Emanuele Giuseppe Esposito , linux-scsi@vger.kernel.org, James Morris , "Serge E. Hallyn" , Arnd Bergmann , "James E.J. Bottomley" , "Manoj N. Kumar" , Alexander Viro , "Matthew R. Ochs" , Uma Krishnan , John Johansen , "Martin K. Petersen" , Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, Thomas Zimmermann , Frederic Barrat , Paolo Bonzini , linuxppc-dev@lists.ozlabs.org, Joel Becker Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" There is no semantic change intended; the code in the libfs.c functions in fact was derived from debugfs and tracefs code. Signed-off-by: Emanuele Giuseppe Esposito --- fs/tracefs/inode.c | 86 ++++------------------------------------------ 1 file changed, 7 insertions(+), 79 deletions(-) diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c index 370eb38ff1ad..bceaa4f45da2 100644 --- a/fs/tracefs/inode.c +++ b/fs/tracefs/inode.c @@ -308,57 +308,6 @@ static struct file_system_type trace_fs_type = { }; MODULE_ALIAS_FS("tracefs"); -static struct dentry *start_creating(const char *name, struct dentry *parent) -{ - struct dentry *dentry; - int error; - - pr_debug("tracefs: creating file '%s'\n",name); - - error = simple_pin_fs(&tracefs, &trace_fs_type); - if (error) - return ERR_PTR(error); - - /* If the parent is not specified, we create it in the root. - * We need the root dentry to do this, which is in the super - * block. A pointer to that is in the struct vfsmount that we - * have around. - */ - if (!parent) - parent = tracefs.mount->mnt_root; - - inode_lock(parent->d_inode); - if (unlikely(IS_DEADDIR(parent->d_inode))) - dentry = ERR_PTR(-ENOENT); - else - dentry = lookup_one_len(name, parent, strlen(name)); - if (!IS_ERR(dentry) && dentry->d_inode) { - dput(dentry); - dentry = ERR_PTR(-EEXIST); - } - - if (IS_ERR(dentry)) { - inode_unlock(parent->d_inode); - simple_release_fs(&tracefs); - } - - return dentry; -} - -static struct dentry *failed_creating(struct dentry *dentry) -{ - inode_unlock(dentry->d_parent->d_inode); - dput(dentry); - simple_release_fs(&tracefs); - return NULL; -} - -static struct dentry *end_creating(struct dentry *dentry) -{ - inode_unlock(dentry->d_parent->d_inode); - return dentry; -} - /** * tracefs_create_file - create a file in the tracefs filesystem * @name: a pointer to a string containing the name of the file to create. @@ -395,49 +344,28 @@ struct dentry *tracefs_create_file(const char *name, umode_t mode, if (security_locked_down(LOCKDOWN_TRACEFS)) return NULL; - if (!(mode & S_IFMT)) - mode |= S_IFREG; - BUG_ON(!S_ISREG(mode)); - dentry = start_creating(name, parent); - + dentry = simplefs_create_file(&tracefs, &trace_fs_type, + name, mode, parent, data, &inode); if (IS_ERR(dentry)) return NULL; - inode = tracefs_get_inode(dentry->d_sb); - if (unlikely(!inode)) - return failed_creating(dentry); - - inode->i_mode = mode; inode->i_fop = fops ? fops : &tracefs_file_operations; - inode->i_private = data; - d_instantiate(dentry, inode); - fsnotify_create(dentry->d_parent->d_inode, dentry); - return end_creating(dentry); + return simplefs_finish_dentry(dentry, inode); } static struct dentry *__create_dir(const char *name, struct dentry *parent, const struct inode_operations *ops) { - struct dentry *dentry = start_creating(name, parent); + struct dentry *dentry; struct inode *inode; + dentry = simplefs_create_dir(&tracefs, &trace_fs_type, + name, 0755, parent, &inode); if (IS_ERR(dentry)) return NULL; - inode = tracefs_get_inode(dentry->d_sb); - if (unlikely(!inode)) - return failed_creating(dentry); - - inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO; inode->i_op = ops; - inode->i_fop = &simple_dir_operations; - - /* directory inodes start off with i_nlink == 2 (for "." entry) */ - inc_nlink(inode); - d_instantiate(dentry, inode); - inc_nlink(dentry->d_parent->d_inode); - fsnotify_mkdir(dentry->d_parent->d_inode, dentry); - return end_creating(dentry); + return simplefs_finish_dentry(dentry, inode); } /** -- 2.25.2 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel