From patchwork Sun Dec 1 11:59:09 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 3261921 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 73037BEEAD for ; Sun, 1 Dec 2013 12:08:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 47DF6203E6 for ; Sun, 1 Dec 2013 12:08:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13872203E3 for ; Sun, 1 Dec 2013 12:08:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752024Ab3LAMHv (ORCPT ); Sun, 1 Dec 2013 07:07:51 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:59168 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751247Ab3LAMG4 (ORCPT ); Sun, 1 Dec 2013 07:06:56 -0500 Received: from hch by bombadil.infradead.org with local (Exim 4.80.1 #2 (Red Hat Linux)) id 1Vn5na-0003bW-OV; Sun, 01 Dec 2013 12:06:54 +0000 Message-Id: <20131201120654.610216548@bombadil.infradead.org> User-Agent: quilt/0.60-1 Date: Sun, 01 Dec 2013 03:59:09 -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 Subject: [PATCH 06/18] fs: make posix_acl_create more useful References: <20131201115903.910559036@bombadil.infradead.org> Content-Disposition: inline; filename=0006-fs-make-posix_acl_create-more-useful.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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 Rename the current posix_acl_created to __posix_acl_create and add a fully featured helper to set up the ACLs on file creation that uses get_acl(). Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara --- fs/9p/acl.c | 2 +- fs/btrfs/acl.c | 2 +- fs/ext2/acl.c | 2 +- fs/ext3/acl.c | 2 +- fs/ext4/acl.c | 2 +- fs/f2fs/acl.c | 2 +- fs/generic_acl.c | 2 +- fs/gfs2/acl.c | 2 +- fs/hfsplus/posix_acl.c | 2 +- fs/jffs2/acl.c | 2 +- fs/jfs/acl.c | 2 +- fs/nfs/nfs3acl.c | 2 +- fs/ocfs2/acl.c | 2 +- fs/posix_acl.c | 53 +++++++++++++++++++++++++++++++++++++++++++-- fs/reiserfs/xattr_acl.c | 2 +- fs/xfs/xfs_acl.c | 4 ++-- include/linux/posix_acl.h | 6 ++++- 17 files changed, 72 insertions(+), 19 deletions(-) diff --git a/fs/9p/acl.c b/fs/9p/acl.c index f5ce5c5..8482f2d 100644 --- a/fs/9p/acl.c +++ b/fs/9p/acl.c @@ -200,7 +200,7 @@ int v9fs_acl_mode(struct inode *dir, umode_t *modep, if (acl) { if (S_ISDIR(mode)) *dpacl = posix_acl_dup(acl); - retval = posix_acl_create(&acl, GFP_NOFS, &mode); + retval = __posix_acl_create(&acl, GFP_NOFS, &mode); if (retval < 0) return retval; if (retval > 0) diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c index 1af04ff..b56519d 100644 --- a/fs/btrfs/acl.c +++ b/fs/btrfs/acl.c @@ -222,7 +222,7 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans, if (ret) goto failed; } - ret = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); + ret = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (ret < 0) return ret; diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c index 7006ced..6e842a7 100644 --- a/fs/ext2/acl.c +++ b/fs/ext2/acl.c @@ -268,7 +268,7 @@ ext2_init_acl(struct inode *inode, struct inode *dir) if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); + error = __posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (error < 0) return error; if (error > 0) { diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c index 6691a6c..4f3d8fa 100644 --- a/fs/ext3/acl.c +++ b/fs/ext3/acl.c @@ -271,7 +271,7 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); + error = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (error < 0) return error; diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index 2eebe02..f827f3b 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -276,7 +276,7 @@ ext4_init_acl(handle_t *handle, struct inode *inode, struct inode *dir) if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); + error = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (error < 0) return error; diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c index 14c4df0..45e8430 100644 --- a/fs/f2fs/acl.c +++ b/fs/f2fs/acl.c @@ -285,7 +285,7 @@ int f2fs_init_acl(struct inode *inode, struct inode *dir, struct page *ipage) if (error) goto cleanup; } - error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); + error = __posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (error < 0) return error; if (error > 0) diff --git a/fs/generic_acl.c b/fs/generic_acl.c index 46a5076..4357f39 100644 --- a/fs/generic_acl.c +++ b/fs/generic_acl.c @@ -128,7 +128,7 @@ generic_acl_init(struct inode *inode, struct inode *dir) if (acl) { if (S_ISDIR(inode->i_mode)) set_cached_acl(inode, ACL_TYPE_DEFAULT, acl); - error = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); + error = __posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (error < 0) return error; if (error > 0) diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c index 3e200c7..e82e4ac 100644 --- a/fs/gfs2/acl.c +++ b/fs/gfs2/acl.c @@ -131,7 +131,7 @@ int gfs2_acl_create(struct gfs2_inode *dip, struct inode *inode) goto out; } - error = posix_acl_create(&acl, GFP_NOFS, &mode); + error = __posix_acl_create(&acl, GFP_NOFS, &mode); if (error < 0) return error; diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c index cab5fd6..277942f 100644 --- a/fs/hfsplus/posix_acl.c +++ b/fs/hfsplus/posix_acl.c @@ -137,7 +137,7 @@ int hfsplus_init_posix_acl(struct inode *inode, struct inode *dir) goto init_acl_cleanup; } - err = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); + err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (unlikely(err < 0)) return err; diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 5853969..4d6e31b 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -295,7 +295,7 @@ int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, umode_t *i_mode if (S_ISDIR(*i_mode)) set_cached_acl(inode, ACL_TYPE_DEFAULT, acl); - rc = posix_acl_create(&acl, GFP_KERNEL, i_mode); + rc = __posix_acl_create(&acl, GFP_KERNEL, i_mode); if (rc < 0) return rc; if (rc > 0) diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c index 9c0fca8..28d529a 100644 --- a/fs/jfs/acl.c +++ b/fs/jfs/acl.c @@ -132,7 +132,7 @@ int jfs_init_acl(tid_t tid, struct inode *inode, struct inode *dir) if (rc) goto cleanup; } - rc = posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); + rc = __posix_acl_create(&acl, GFP_KERNEL, &inode->i_mode); if (rc < 0) goto cleanup; /* posix_acl_release(NULL) is no-op */ if (rc > 0) diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index 4a1aafb..e859675 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -428,7 +428,7 @@ int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, if (!dfacl) return 0; acl = posix_acl_dup(dfacl); - error = posix_acl_create(&acl, GFP_KERNEL, &mode); + error = __posix_acl_create(&acl, GFP_KERNEL, &mode); if (error < 0) goto out_release_dfacl; error = nfs3_proc_setacls(inode, acl, S_ISDIR(inode->i_mode) ? diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 73ccf0e..c0f9d2f 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -401,7 +401,7 @@ int ocfs2_init_acl(handle_t *handle, goto cleanup; } mode = inode->i_mode; - ret = posix_acl_create(&acl, GFP_NOFS, &mode); + ret = __posix_acl_create(&acl, GFP_NOFS, &mode); if (ret < 0) return ret; diff --git a/fs/posix_acl.c b/fs/posix_acl.c index 9f76aaa..38d6a49 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -384,7 +384,7 @@ static int __posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) } int -posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) +__posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) { struct posix_acl *clone = posix_acl_clone(*acl, gfp); int err = -ENOMEM; @@ -399,7 +399,7 @@ posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) *acl = clone; return err; } -EXPORT_SYMBOL(posix_acl_create); +EXPORT_SYMBOL(__posix_acl_create); int __posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) @@ -443,6 +443,55 @@ posix_acl_chmod(struct inode *inode) } EXPORT_SYMBOL(posix_acl_chmod); +int +posix_acl_create(struct inode *dir, umode_t *mode, + struct posix_acl **default_acl, struct posix_acl **acl) +{ + struct posix_acl *p; + int ret; + + if (S_ISLNK(*mode) || !IS_POSIXACL(dir)) + goto no_acl; + + p = get_acl(dir, ACL_TYPE_DEFAULT); + if (IS_ERR(p)) + return PTR_ERR(p); + + if (!p) { + *mode &= ~current_umask(); + goto no_acl; + } + + *acl = posix_acl_clone(p, GFP_NOFS); + if (!*acl) + return -ENOMEM; + + ret = posix_acl_create_masq(*acl, mode); + if (ret < 0) { + posix_acl_release(*acl); + return -ENOMEM; + } + + if (ret == 0) { + posix_acl_release(*acl); + *acl = NULL; + } + + if (!S_ISDIR(*mode)) { + posix_acl_release(p); + *default_acl = NULL; + } else { + *default_acl = p; + } + return 0; + +no_acl: + *default_acl = NULL; + *acl = NULL; + return 0; +} +EXPORT_SYMBOL_GPL(posix_acl_create); + struct posix_acl *get_acl(struct inode *inode, int type) { struct posix_acl *acl; diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index ea4e443..d95c959 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -378,7 +378,7 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, /* Now we reconcile the new ACL and the mode, potentially modifying both */ - err = posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); + err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode); if (err < 0) return err; diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c index 4eac105..057ae2d 100644 --- a/fs/xfs/xfs_acl.c +++ b/fs/xfs/xfs_acl.c @@ -297,12 +297,12 @@ xfs_inherit_acl(struct inode *inode, struct posix_acl *acl) goto out; } - error = posix_acl_create(&acl, GFP_KERNEL, &mode); + error = __posix_acl_create(&acl, GFP_KERNEL, &mode); if (error < 0) return error; /* - * If posix_acl_create returns a positive value we need to + * If __posix_acl_create returns a positive value we need to * inherit a permission that can't be represented using the Unix * mode bits and we actually need to set an ACL. */ diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h index 8b64e78..9ec6b45 100644 --- a/include/linux/posix_acl.h +++ b/include/linux/posix_acl.h @@ -88,14 +88,18 @@ extern int posix_acl_valid(const struct posix_acl *); extern int posix_acl_permission(struct inode *, const struct posix_acl *, int); extern struct posix_acl *posix_acl_from_mode(umode_t, gfp_t); extern int posix_acl_equiv_mode(const struct posix_acl *, umode_t *); -extern int posix_acl_create(struct posix_acl **, gfp_t, umode_t *); +extern int __posix_acl_create(struct posix_acl **, gfp_t, umode_t *); extern int __posix_acl_chmod(struct posix_acl **, gfp_t, umode_t); +extern int posix_acl_prepare(struct inode *dir, struct inode *inode, + umode_t *mode); extern struct posix_acl *get_posix_acl(struct inode *, int); extern int set_posix_acl(struct inode *, int, struct posix_acl *); #ifdef CONFIG_FS_POSIX_ACL extern int posix_acl_chmod(struct inode *); +extern int posix_acl_create(struct inode *, umode_t *, struct posix_acl **, + struct posix_acl **); static inline struct posix_acl **acl_by_type(struct inode *inode, int type) {