From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965275AbcHNLbK (ORCPT ); Sun, 14 Aug 2016 07:31:10 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:52365 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933009AbcHNLbG (ORCPT ); Sun, 14 Aug 2016 07:31:06 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Andreas Gruenbacher" , "Al Viro" , "J. Bruce Fields" , "Christoph Hellwig" Date: Sat, 13 Aug 2016 18:42:51 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 225/305] posix_acl: Add set_posix_acl In-Reply-To: X-SA-Exim-Connect-IP: 92.40.249.202 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.37-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Andreas Gruenbacher commit 485e71e8fb6356c08c7fc6bcce4bf02c9a9a663f upstream. Factor out part of posix_acl_xattr_set into a common function that takes a posix_acl, which nfsd can also call. The prototype already exists in include/linux/posix_acl.h. Signed-off-by: Andreas Gruenbacher Cc: Christoph Hellwig Cc: Al Viro Signed-off-by: J. Bruce Fields [carnil: backport to 3.16: adjust context] Signed-off-by: Ben Hutchings --- fs/posix_acl.c | 42 +++++++++++++++++++++++------------------- 1 file changed, 23 insertions(+), 19 deletions(-) --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -787,38 +787,42 @@ posix_acl_xattr_get(struct dentry *dentr return error; } -static int -posix_acl_xattr_set(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) +int +set_posix_acl(struct inode *inode, int type, struct posix_acl *acl) { - struct inode *inode = dentry->d_inode; - struct posix_acl *acl = NULL; - int ret; - if (!IS_POSIXACL(inode)) return -EOPNOTSUPP; if (!inode->i_op->set_acl) return -EOPNOTSUPP; if (type == ACL_TYPE_DEFAULT && !S_ISDIR(inode->i_mode)) - return value ? -EACCES : 0; + return acl ? -EACCES : 0; if (!inode_owner_or_capable(inode)) return -EPERM; + if (acl) { + int ret = posix_acl_valid(acl); + if (ret) + return ret; + } + return inode->i_op->set_acl(inode, acl, type); +} +EXPORT_SYMBOL(set_posix_acl); + +static int +posix_acl_xattr_set(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags, int type) +{ + struct inode *inode = dentry->d_inode; + struct posix_acl *acl = NULL; + int ret; + if (value) { acl = posix_acl_from_xattr(&init_user_ns, value, size); if (IS_ERR(acl)) return PTR_ERR(acl); - - if (acl) { - ret = posix_acl_valid(acl); - if (ret) - goto out; - } } - - ret = inode->i_op->set_acl(inode, acl, type); -out: + ret = set_posix_acl(inode, type, acl); posix_acl_release(acl); return ret; }