From patchwork Fri Dec 20 13:16:48 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 3388771 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 4CE6AC0D4A for ; Fri, 20 Dec 2013 13:28:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 227EE206F6 for ; Fri, 20 Dec 2013 13:28:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C409C206F3 for ; Fri, 20 Dec 2013 13:28:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422740Ab3LTN2f (ORCPT ); Fri, 20 Dec 2013 08:28:35 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:54538 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932841Ab3LTNZZ (ORCPT ); Fri, 20 Dec 2013 08:25:25 -0500 Received: from hch by bombadil.infradead.org with local (Exim 4.80.1 #2 (Red Hat Linux)) id 1Vu04x-0003JH-Hk; Fri, 20 Dec 2013 13:25:23 +0000 Message-Id: <20131220132523.424551703@bombadil.infradead.org> User-Agent: quilt/0.60-1 Date: Fri, 20 Dec 2013 05:16:48 -0800 From: Christoph Hellwig To: viro@zeniv.linux.org.uk Cc: linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-mtd@lists.infradead.org, Mark Fasheh , Joel Becker , reiserfs-devel@vger.kernel.org, xfs@oss.sgi.com, jfs-discussion@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, Andreas Gruenbacher Subject: [PATCH 13/21] ocfs2: use generic posix ACL infrastructure References: <20131220131635.650823732@bombadil.infradead.org> Content-Disposition: inline; filename=0013-ocfs2-use-generic-posix-ACL-infrastructure.patch X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 This contains some major refactoring for the create path so that inodes are created with the right mode to start with instead of fixing it up later. Signed-off-by: Christoph Hellwig --- fs/ocfs2/acl.c | 234 ++--------------------------------------------- fs/ocfs2/acl.h | 13 ++- fs/ocfs2/file.c | 4 +- fs/ocfs2/namei.c | 25 ++++- fs/ocfs2/refcounttree.c | 19 +++- fs/ocfs2/xattr.c | 21 +++-- fs/ocfs2/xattr.h | 6 +- 7 files changed, 72 insertions(+), 250 deletions(-) diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index c0f9d2f..555f4cd 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -160,36 +160,6 @@ static struct posix_acl *ocfs2_get_acl_nolock(struct inode *inode, return acl; } - -/* - * Get posix acl. - */ -static struct posix_acl *ocfs2_get_acl(struct inode *inode, int type) -{ - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct buffer_head *di_bh = NULL; - struct posix_acl *acl; - int ret; - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return NULL; - - ret = ocfs2_inode_lock(inode, &di_bh, 0); - if (ret < 0) { - mlog_errno(ret); - acl = ERR_PTR(ret); - return acl; - } - - acl = ocfs2_get_acl_nolock(inode, type, di_bh); - - ocfs2_inode_unlock(inode, 0); - - brelse(di_bh); - - return acl; -} - /* * Helper function to set i_mode in memory and disk. Some call paths * will not have di_bh or a journal handle to pass, in which case it @@ -250,7 +220,7 @@ out: /* * Set the access or default ACL of an inode. */ -static int ocfs2_set_acl(handle_t *handle, +int ocfs2_set_acl(handle_t *handle, struct inode *inode, struct buffer_head *di_bh, int type, @@ -313,6 +283,11 @@ static int ocfs2_set_acl(handle_t *handle, return ret; } +int ocfs2_iop_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + return ocfs2_set_acl(NULL, inode, NULL, type, acl, NULL, NULL); +} + struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type) { struct ocfs2_super *osb; @@ -334,200 +309,3 @@ struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type) return acl; } - -int ocfs2_acl_chmod(struct inode *inode) -{ - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct posix_acl *acl; - int ret; - - if (S_ISLNK(inode->i_mode)) - return -EOPNOTSUPP; - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return 0; - - acl = ocfs2_get_acl(inode, ACL_TYPE_ACCESS); - if (IS_ERR(acl) || !acl) - return PTR_ERR(acl); - ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); - if (ret) - return ret; - ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS, - acl, NULL, NULL); - posix_acl_release(acl); - return ret; -} - -/* - * Initialize the ACLs of a new inode. If parent directory has default ACL, - * then clone to new inode. Called from ocfs2_mknod. - */ -int ocfs2_init_acl(handle_t *handle, - struct inode *inode, - struct inode *dir, - struct buffer_head *di_bh, - struct buffer_head *dir_bh, - struct ocfs2_alloc_context *meta_ac, - struct ocfs2_alloc_context *data_ac) -{ - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct posix_acl *acl = NULL; - int ret = 0, ret2; - umode_t mode; - - if (!S_ISLNK(inode->i_mode)) { - if (osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) { - acl = ocfs2_get_acl_nolock(dir, ACL_TYPE_DEFAULT, - dir_bh); - if (IS_ERR(acl)) - return PTR_ERR(acl); - } - if (!acl) { - mode = inode->i_mode & ~current_umask(); - ret = ocfs2_acl_set_mode(inode, di_bh, handle, mode); - if (ret) { - mlog_errno(ret); - goto cleanup; - } - } - } - if ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) && acl) { - if (S_ISDIR(inode->i_mode)) { - ret = ocfs2_set_acl(handle, inode, di_bh, - ACL_TYPE_DEFAULT, acl, - meta_ac, data_ac); - if (ret) - goto cleanup; - } - mode = inode->i_mode; - ret = __posix_acl_create(&acl, GFP_NOFS, &mode); - if (ret < 0) - return ret; - - ret2 = ocfs2_acl_set_mode(inode, di_bh, handle, mode); - if (ret2) { - mlog_errno(ret2); - ret = ret2; - goto cleanup; - } - if (ret > 0) { - ret = ocfs2_set_acl(handle, inode, - di_bh, ACL_TYPE_ACCESS, - acl, meta_ac, data_ac); - } - } -cleanup: - posix_acl_release(acl); - return ret; -} - -static size_t ocfs2_xattr_list_acl_access(struct dentry *dentry, - char *list, - size_t list_len, - const char *name, - size_t name_len, - int type) -{ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); - const size_t size = sizeof(POSIX_ACL_XATTR_ACCESS); - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return 0; - - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_ACCESS, size); - return size; -} - -static size_t ocfs2_xattr_list_acl_default(struct dentry *dentry, - char *list, - size_t list_len, - const char *name, - size_t name_len, - int type) -{ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); - const size_t size = sizeof(POSIX_ACL_XATTR_DEFAULT); - - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return 0; - - if (list && size <= list_len) - memcpy(list, POSIX_ACL_XATTR_DEFAULT, size); - return size; -} - -static int ocfs2_xattr_get_acl(struct dentry *dentry, const char *name, - void *buffer, size_t size, int type) -{ - struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb); - struct posix_acl *acl; - int ret; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return -EOPNOTSUPP; - - acl = ocfs2_get_acl(dentry->d_inode, type); - if (IS_ERR(acl)) - return PTR_ERR(acl); - if (acl == NULL) - return -ENODATA; - ret = posix_acl_to_xattr(&init_user_ns, acl, buffer, size); - posix_acl_release(acl); - - return ret; -} - -static int ocfs2_xattr_set_acl(struct dentry *dentry, const char *name, - const void *value, size_t size, int flags, int type) -{ - struct inode *inode = dentry->d_inode; - struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); - struct posix_acl *acl; - int ret = 0; - - if (strcmp(name, "") != 0) - return -EINVAL; - if (!(osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL)) - return -EOPNOTSUPP; - - if (!inode_owner_or_capable(inode)) - return -EPERM; - - if (value) { - acl = posix_acl_from_xattr(&init_user_ns, value, size); - if (IS_ERR(acl)) - return PTR_ERR(acl); - else if (acl) { - ret = posix_acl_valid(acl); - if (ret) - goto cleanup; - } - } else - acl = NULL; - - ret = ocfs2_set_acl(NULL, inode, NULL, type, acl, NULL, NULL); - -cleanup: - posix_acl_release(acl); - return ret; -} - -const struct xattr_handler ocfs2_xattr_acl_access_handler = { - .prefix = POSIX_ACL_XATTR_ACCESS, - .flags = ACL_TYPE_ACCESS, - .list = ocfs2_xattr_list_acl_access, - .get = ocfs2_xattr_get_acl, - .set = ocfs2_xattr_set_acl, -}; - -const struct xattr_handler ocfs2_xattr_acl_default_handler = { - .prefix = POSIX_ACL_XATTR_DEFAULT, - .flags = ACL_TYPE_DEFAULT, - .list = ocfs2_xattr_list_acl_default, - .get = ocfs2_xattr_get_acl, - .set = ocfs2_xattr_set_acl, -}; diff --git a/fs/ocfs2/acl.h b/fs/ocfs2/acl.h index 071fbd38..3fce68d 100644 --- a/fs/ocfs2/acl.h +++ b/fs/ocfs2/acl.h @@ -27,10 +27,13 @@ struct ocfs2_acl_entry { }; struct posix_acl *ocfs2_iop_get_acl(struct inode *inode, int type); -extern int ocfs2_acl_chmod(struct inode *); -extern int ocfs2_init_acl(handle_t *, struct inode *, struct inode *, - struct buffer_head *, struct buffer_head *, - struct ocfs2_alloc_context *, - struct ocfs2_alloc_context *); +int ocfs2_iop_set_acl(struct inode *inode, struct posix_acl *acl, int type); +int ocfs2_set_acl(handle_t *handle, + struct inode *inode, + struct buffer_head *di_bh, + int type, + struct posix_acl *acl, + struct ocfs2_alloc_context *meta_ac, + struct ocfs2_alloc_context *data_ac); #endif /* OCFS2_ACL_H */ diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 6fff128..014a38e 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -1236,7 +1236,7 @@ bail: dqput(transfer_to[qtype]); if (!status && attr->ia_valid & ATTR_MODE) { - status = ocfs2_acl_chmod(inode); + status = posix_acl_chmod(inode, inode->i_mode); if (status < 0) mlog_errno(status); } @@ -2661,6 +2661,7 @@ const struct inode_operations ocfs2_file_iops = { .removexattr = generic_removexattr, .fiemap = ocfs2_fiemap, .get_acl = ocfs2_iop_get_acl, + .set_acl = ocfs2_iop_set_acl, }; const struct inode_operations ocfs2_special_file_iops = { @@ -2668,6 +2669,7 @@ const struct inode_operations ocfs2_special_file_iops = { .getattr = ocfs2_getattr, .permission = ocfs2_permission, .get_acl = ocfs2_iop_get_acl, + .set_acl = ocfs2_iop_set_acl, }; /* diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c index 4f791f6..c975eed 100644 --- a/fs/ocfs2/namei.c +++ b/fs/ocfs2/namei.c @@ -230,6 +230,7 @@ static int ocfs2_mknod(struct inode *dir, struct ocfs2_dir_lookup_result lookup = { NULL, }; sigset_t oldset; int did_block_signals = 0; + struct posix_acl *default_acl = NULL, *acl = NULL; trace_ocfs2_mknod(dir, dentry, dentry->d_name.len, dentry->d_name.name, (unsigned long long)OCFS2_I(dir)->ip_blkno, @@ -331,6 +332,12 @@ static int ocfs2_mknod(struct inode *dir, goto leave; } + status = posix_acl_create(dir, &mode, &default_acl, &acl); + if (status) { + mlog_errno(status); + goto leave; + } + handle = ocfs2_start_trans(osb, ocfs2_mknod_credits(osb->sb, S_ISDIR(mode), xattr_credits)); @@ -379,8 +386,17 @@ static int ocfs2_mknod(struct inode *dir, inc_nlink(dir); } - status = ocfs2_init_acl(handle, inode, dir, new_fe_bh, parent_fe_bh, - meta_ac, data_ac); + if (default_acl) { + status = ocfs2_set_acl(handle, inode, new_fe_bh, + ACL_TYPE_DEFAULT, default_acl, + meta_ac, data_ac); + } + if (!status && acl) { + status = ocfs2_set_acl(handle, inode, new_fe_bh, + ACL_TYPE_ACCESS, acl, + meta_ac, data_ac); + } + if (status < 0) { mlog_errno(status); goto leave; @@ -419,6 +435,10 @@ static int ocfs2_mknod(struct inode *dir, d_instantiate(dentry, inode); status = 0; leave: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); if (status < 0 && did_quota_inode) dquot_free_inode(inode); if (handle) @@ -2504,4 +2524,5 @@ const struct inode_operations ocfs2_dir_iops = { .removexattr = generic_removexattr, .fiemap = ocfs2_fiemap, .get_acl = ocfs2_iop_get_acl, + .set_acl = ocfs2_iop_set_acl, }; diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 55767e1..6ba4bcb 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -46,6 +46,7 @@ #include #include #include +#include struct ocfs2_cow_context { struct inode *inode; @@ -4268,11 +4269,20 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir, struct inode *inode = old_dentry->d_inode; struct buffer_head *old_bh = NULL; struct inode *new_orphan_inode = NULL; + struct posix_acl *default_acl, *acl; + umode_t mode; if (!ocfs2_refcount_tree(OCFS2_SB(inode->i_sb))) return -EOPNOTSUPP; - error = ocfs2_create_inode_in_orphan(dir, inode->i_mode, + mode = inode->i_mode; + error = posix_acl_create(dir, &mode, &default_acl, &acl); + if (error) { + mlog_errno(error); + goto out; + } + + error = ocfs2_create_inode_in_orphan(dir, mode, &new_orphan_inode); if (error) { mlog_errno(error); @@ -4303,11 +4313,16 @@ static int ocfs2_reflink(struct dentry *old_dentry, struct inode *dir, /* If the security isn't preserved, we need to re-initialize them. */ if (!preserve) { error = ocfs2_init_security_and_acl(dir, new_orphan_inode, - &new_dentry->d_name); + &new_dentry->d_name, + default_acl, acl); if (error) mlog_errno(error); } out: + if (default_acl) + posix_acl_release(default_acl); + if (acl) + posix_acl_release(acl); if (!error) { error = ocfs2_mv_orphaned_inode_to_new(dir, new_orphan_inode, new_dentry); diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c index f0a1326..185fa3b7 100644 --- a/fs/ocfs2/xattr.c +++ b/fs/ocfs2/xattr.c @@ -99,8 +99,8 @@ static struct ocfs2_xattr_def_value_root def_xv = { const struct xattr_handler *ocfs2_xattr_handlers[] = { &ocfs2_xattr_user_handler, - &ocfs2_xattr_acl_access_handler, - &ocfs2_xattr_acl_default_handler, + &posix_acl_access_xattr_handler, + &posix_acl_default_xattr_handler, &ocfs2_xattr_trusted_handler, &ocfs2_xattr_security_handler, NULL @@ -109,9 +109,9 @@ const struct xattr_handler *ocfs2_xattr_handlers[] = { static const struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = { [OCFS2_XATTR_INDEX_USER] = &ocfs2_xattr_user_handler, [OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS] - = &ocfs2_xattr_acl_access_handler, + = &posix_acl_access_xattr_handler, [OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT] - = &ocfs2_xattr_acl_default_handler, + = &posix_acl_default_xattr_handler, [OCFS2_XATTR_INDEX_TRUSTED] = &ocfs2_xattr_trusted_handler, [OCFS2_XATTR_INDEX_SECURITY] = &ocfs2_xattr_security_handler, }; @@ -7190,10 +7190,12 @@ out: */ int ocfs2_init_security_and_acl(struct inode *dir, struct inode *inode, - const struct qstr *qstr) + const struct qstr *qstr, + struct posix_acl *default_acl, + struct posix_acl *acl) { - int ret = 0; struct buffer_head *dir_bh = NULL; + int ret = 0; ret = ocfs2_init_security_get(inode, dir, qstr, NULL); if (ret) { @@ -7207,9 +7209,10 @@ int ocfs2_init_security_and_acl(struct inode *dir, goto leave; } - ret = ocfs2_init_acl(NULL, inode, dir, NULL, dir_bh, NULL, NULL); - if (ret) - mlog_errno(ret); + if (!ret && default_acl) + ret = ocfs2_iop_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + if (!ret && acl) + ret = ocfs2_iop_set_acl(inode, acl, ACL_TYPE_ACCESS); ocfs2_inode_unlock(dir, 0); brelse(dir_bh); diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h index 19f134e..f10d5b9 100644 --- a/fs/ocfs2/xattr.h +++ b/fs/ocfs2/xattr.h @@ -40,8 +40,6 @@ struct ocfs2_security_xattr_info { extern const struct xattr_handler ocfs2_xattr_user_handler; extern const struct xattr_handler ocfs2_xattr_trusted_handler; extern const struct xattr_handler ocfs2_xattr_security_handler; -extern const struct xattr_handler ocfs2_xattr_acl_access_handler; -extern const struct xattr_handler ocfs2_xattr_acl_default_handler; extern const struct xattr_handler *ocfs2_xattr_handlers[]; ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); @@ -96,5 +94,7 @@ int ocfs2_reflink_xattrs(struct inode *old_inode, bool preserve_security); int ocfs2_init_security_and_acl(struct inode *dir, struct inode *inode, - const struct qstr *qstr); + const struct qstr *qstr, + struct posix_acl *default_acl, + struct posix_acl *acl); #endif /* OCFS2_XATTR_H */