Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030750AbbEEFoL (ORCPT ); Tue, 5 May 2015 01:44:11 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:39684 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752764AbbEEFW6 (ORCPT ); Tue, 5 May 2015 01:22:58 -0400 From: Al Viro To: Linus Torvalds Cc: Neil Brown , Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 21/79] SECURITY: remove nameidata arg from inode_follow_link. Date: Tue, 5 May 2015 06:21:55 +0100 Message-Id: <1430803373-4948-21-git-send-email-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <20150505052205.GS889@ZenIV.linux.org.uk> References: <20150505052205.GS889@ZenIV.linux.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4825 Lines: 130 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 4a8d998b..cd0ffc9f18 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(); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/