From patchwork Mon May 11 18:06:41 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Al Viro X-Patchwork-Id: 6382371 Return-Path: X-Original-To: patchwork-linux-fsdevel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6F839BEEE1 for ; Mon, 11 May 2015 18:41:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 670E520592 for ; Mon, 11 May 2015 18:41:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E1A720115 for ; Mon, 11 May 2015 18:41:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932440AbbEKSjR (ORCPT ); Mon, 11 May 2015 14:39:17 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:46977 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754917AbbEKSIP (ORCPT ); Mon, 11 May 2015 14:08:15 -0400 Received: from viro by ZenIV.linux.org.uk with local (Exim 4.76 #1 (Red Hat Linux)) id 1Yrs7h-0001OW-Kh; Mon, 11 May 2015 18:08:13 +0000 From: Al Viro To: Linus Torvalds Cc: Neil Brown , Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v3 021/110] SECURITY: remove nameidata arg from inode_follow_link. Date: Mon, 11 May 2015 19:06:41 +0100 Message-Id: <1431367690-5223-21-git-send-email-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <20150511180650.GA4147@ZenIV.linux.org.uk> References: <20150511180650.GA4147@ZenIV.linux.org.uk> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: NeilBrown No ->inode_follow_link() methods use the nameidata arg, and it is about to become private to namei.c. So remove from all inode_follow_link() functions. Signed-off-by: NeilBrown Signed-off-by: Al Viro --- fs/namei.c | 2 +- include/linux/security.h | 9 +++------ security/capability.c | 3 +-- security/security.c | 4 ++-- security/selinux/hooks.c | 2 +- 5 files changed, 8 insertions(+), 12 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index fe30d3b..7f20b40 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -871,7 +871,7 @@ follow_link(struct path *link, struct nameidata *nd, void **p) touch_atime(link); nd_set_link(nd, NULL); - error = security_inode_follow_link(link->dentry, nd); + error = security_inode_follow_link(dentry); if (error) goto out_put_nd_path; diff --git a/include/linux/security.h b/include/linux/security.h index 18264ea..62a6620 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -43,7 +43,6 @@ struct file; struct vfsmount; struct path; struct qstr; -struct nameidata; struct iattr; struct fown_struct; struct file_operations; @@ -477,7 +476,6 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * @inode_follow_link: * Check permission to follow a symbolic link when looking up a pathname. * @dentry contains the dentry structure for the link. - * @nd contains the nameidata structure for the parent directory. * Return 0 if permission is granted. * @inode_permission: * Check permission before accessing an inode. This hook is called by the @@ -1553,7 +1551,7 @@ struct security_operations { int (*inode_rename) (struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry); int (*inode_readlink) (struct dentry *dentry); - int (*inode_follow_link) (struct dentry *dentry, struct nameidata *nd); + int (*inode_follow_link) (struct dentry *dentry); int (*inode_permission) (struct inode *inode, int mask); int (*inode_setattr) (struct dentry *dentry, struct iattr *attr); int (*inode_getattr) (const struct path *path); @@ -1839,7 +1837,7 @@ int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags); int security_inode_readlink(struct dentry *dentry); -int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd); +int security_inode_follow_link(struct dentry *dentry); int security_inode_permission(struct inode *inode, int mask); int security_inode_setattr(struct dentry *dentry, struct iattr *attr); int security_inode_getattr(const struct path *path); @@ -2241,8 +2239,7 @@ static inline int security_inode_readlink(struct dentry *dentry) return 0; } -static inline int security_inode_follow_link(struct dentry *dentry, - struct nameidata *nd) +static inline int security_inode_follow_link(struct dentry *dentry) { return 0; } diff --git a/security/capability.c b/security/capability.c index 0d03fcc..fae99db 100644 --- a/security/capability.c +++ b/security/capability.c @@ -209,8 +209,7 @@ static int cap_inode_readlink(struct dentry *dentry) return 0; } -static int cap_inode_follow_link(struct dentry *dentry, - struct nameidata *nameidata) +static int cap_inode_follow_link(struct dentry *dentry) { return 0; } diff --git a/security/security.c b/security/security.c index 8e9b1f4..d7c30b0 100644 --- a/security/security.c +++ b/security/security.c @@ -581,11 +581,11 @@ int security_inode_readlink(struct dentry *dentry) return security_ops->inode_readlink(dentry); } -int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) +int security_inode_follow_link(struct dentry *dentry) { if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) return 0; - return security_ops->inode_follow_link(dentry, nd); + return security_ops->inode_follow_link(dentry); } int security_inode_permission(struct inode *inode, int mask) diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 7dade28..8016229 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2861,7 +2861,7 @@ static int selinux_inode_readlink(struct dentry *dentry) return dentry_has_perm(cred, dentry, FILE__READ); } -static int selinux_inode_follow_link(struct dentry *dentry, struct nameidata *nameidata) +static int selinux_inode_follow_link(struct dentry *dentry) { const struct cred *cred = current_cred();