Return-Path: linux-nfs-owner@vger.kernel.org Received: from cantor2.suse.de ([195.135.220.15]:60904 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753267Ab3LBVJj (ORCPT ); Mon, 2 Dec 2013 16:09:39 -0500 Date: Mon, 2 Dec 2013 22:09:36 +0100 From: Jan Kara To: Christoph Hellwig Cc: viro@zeniv.linux.org.uk, 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: Re: [PATCH 05/18] fs: make posix_acl_chmod more useful Message-ID: <20131202210936.GF12253@quack.suse.cz> References: <20131201115903.910559036@bombadil.infradead.org> <20131201120654.453220050@bombadil.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20131201120654.453220050@bombadil.infradead.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Sun 01-12-13 03:59:08, Christoph Hellwig wrote: > Rename the current posix_acl_chmod to __posix_acl_chmod and add > a fully featured ACL chmod helper that uses the ->set_acl inode > operation. Looks good. You can add: Reviewed-by: Jan Kara Honza > > Signed-off-by: Christoph Hellwig > --- > 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/ocfs2/acl.c | 2 +- > fs/posix_acl.c | 30 +++++++++++++++++++++++++++--- > fs/reiserfs/xattr_acl.c | 2 +- > fs/xfs/xfs_acl.c | 2 +- > include/linux/posix_acl.h | 17 +++++++++++++---- > 16 files changed, 54 insertions(+), 21 deletions(-) > > diff --git a/fs/9p/acl.c b/fs/9p/acl.c > index 7af425f..f5ce5c5 100644 > --- a/fs/9p/acl.c > +++ b/fs/9p/acl.c > @@ -156,7 +156,7 @@ int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid) > return -EOPNOTSUPP; > acl = v9fs_get_cached_acl(inode, ACL_TYPE_ACCESS); > if (acl) { > - retval = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + retval = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (retval) > return retval; > set_cached_acl(inode, ACL_TYPE_ACCESS, acl); > diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c > index 0890c83..1af04ff 100644 > --- a/fs/btrfs/acl.c > +++ b/fs/btrfs/acl.c > @@ -256,7 +256,7 @@ int btrfs_acl_chmod(struct inode *inode) > if (IS_ERR_OR_NULL(acl)) > return PTR_ERR(acl); > > - ret = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (ret) > return ret; > ret = btrfs_set_acl(NULL, inode, acl, ACL_TYPE_ACCESS); > diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c > index 110b6b3..7006ced 100644 > --- a/fs/ext2/acl.c > +++ b/fs/ext2/acl.c > @@ -308,7 +308,7 @@ ext2_acl_chmod(struct inode *inode) > acl = ext2_get_acl(inode, ACL_TYPE_ACCESS); > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + error = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (error) > return error; > error = ext2_set_acl(inode, ACL_TYPE_ACCESS, acl); > diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c > index dbb5ad5..6691a6c 100644 > --- a/fs/ext3/acl.c > +++ b/fs/ext3/acl.c > @@ -314,7 +314,7 @@ ext3_acl_chmod(struct inode *inode) > acl = ext3_get_acl(inode, ACL_TYPE_ACCESS); > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + error = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (error) > return error; > retry: > diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c > index 39a54a0..2eebe02 100644 > --- a/fs/ext4/acl.c > +++ b/fs/ext4/acl.c > @@ -320,7 +320,7 @@ ext4_acl_chmod(struct inode *inode) > acl = ext4_get_acl(inode, ACL_TYPE_ACCESS); > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + error = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (error) > return error; > retry: > diff --git a/fs/f2fs/acl.c b/fs/f2fs/acl.c > index d0fc287..14c4df0 100644 > --- a/fs/f2fs/acl.c > +++ b/fs/f2fs/acl.c > @@ -311,7 +311,7 @@ int f2fs_acl_chmod(struct inode *inode) > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > > - error = posix_acl_chmod(&acl, GFP_KERNEL, mode); > + error = __posix_acl_chmod(&acl, GFP_KERNEL, mode); > if (error) > return error; > > diff --git a/fs/generic_acl.c b/fs/generic_acl.c > index b3f3676..46a5076 100644 > --- a/fs/generic_acl.c > +++ b/fs/generic_acl.c > @@ -158,7 +158,7 @@ generic_acl_chmod(struct inode *inode) > return -EOPNOTSUPP; > acl = get_cached_acl(inode, ACL_TYPE_ACCESS); > if (acl) { > - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + error = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (error) > return error; > set_cached_acl(inode, ACL_TYPE_ACCESS, acl); > diff --git a/fs/gfs2/acl.c b/fs/gfs2/acl.c > index f69ac0a..3e200c7 100644 > --- a/fs/gfs2/acl.c > +++ b/fs/gfs2/acl.c > @@ -162,7 +162,7 @@ int gfs2_acl_chmod(struct gfs2_inode *ip, struct iattr *attr) > if (!acl) > return gfs2_setattr_simple(inode, attr); > > - error = posix_acl_chmod(&acl, GFP_NOFS, attr->ia_mode); > + error = __posix_acl_chmod(&acl, GFP_NOFS, attr->ia_mode); > if (error) > return error; > > diff --git a/fs/hfsplus/posix_acl.c b/fs/hfsplus/posix_acl.c > index b609cc1..cab5fd6 100644 > --- a/fs/hfsplus/posix_acl.c > +++ b/fs/hfsplus/posix_acl.c > @@ -167,7 +167,7 @@ int hfsplus_posix_acl_chmod(struct inode *inode) > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > > - err = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + err = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (unlikely(err)) > return err; > > diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c > index 223283c..5853969 100644 > --- a/fs/jffs2/acl.c > +++ b/fs/jffs2/acl.c > @@ -335,7 +335,7 @@ int jffs2_acl_chmod(struct inode *inode) > acl = jffs2_get_acl(inode, ACL_TYPE_ACCESS); > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > - rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + rc = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (rc) > return rc; > rc = jffs2_set_acl(inode, ACL_TYPE_ACCESS, acl); > diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c > index d254d6d..9c0fca8 100644 > --- a/fs/jfs/acl.c > +++ b/fs/jfs/acl.c > @@ -161,7 +161,7 @@ int jfs_acl_chmod(struct inode *inode) > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > > - rc = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + rc = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (rc) > return rc; > > diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c > index b4f788e..73ccf0e 100644 > --- a/fs/ocfs2/acl.c > +++ b/fs/ocfs2/acl.c > @@ -350,7 +350,7 @@ int ocfs2_acl_chmod(struct inode *inode) > 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); > + ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (ret) > return ret; > ret = ocfs2_set_acl(NULL, inode, NULL, ACL_TYPE_ACCESS, > diff --git a/fs/posix_acl.c b/fs/posix_acl.c > index 9dd03e0..9f76aaa 100644 > --- a/fs/posix_acl.c > +++ b/fs/posix_acl.c > @@ -338,7 +338,7 @@ static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p) > /* > * Modify the ACL for the chmod syscall. > */ > -static int posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) > +static int __posix_acl_chmod_masq(struct posix_acl *acl, umode_t mode) > { > struct posix_acl_entry *group_obj = NULL, *mask_obj = NULL; > struct posix_acl_entry *pa, *pe; > @@ -402,12 +402,12 @@ posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p) > EXPORT_SYMBOL(posix_acl_create); > > int > -posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) > +__posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) > { > struct posix_acl *clone = posix_acl_clone(*acl, gfp); > int err = -ENOMEM; > if (clone) { > - err = posix_acl_chmod_masq(clone, mode); > + err = __posix_acl_chmod_masq(clone, mode); > if (err) { > posix_acl_release(clone); > clone = NULL; > @@ -417,6 +417,30 @@ posix_acl_chmod(struct posix_acl **acl, gfp_t gfp, umode_t mode) > *acl = clone; > return err; > } > +EXPORT_SYMBOL(__posix_acl_chmod); > + > +int > +posix_acl_chmod(struct inode *inode) > +{ > + struct posix_acl *acl; > + int ret = 0; > + > + if (S_ISLNK(inode->i_mode)) > + return -EOPNOTSUPP; > + if (!IS_POSIXACL(inode)) > + return 0; > + > + acl = get_acl(inode, ACL_TYPE_ACCESS); > + if (IS_ERR_OR_NULL(acl)) > + return PTR_ERR(acl); > + > + ret = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + if (ret) > + return ret; > + ret = inode->i_op->set_acl(inode, acl, ACL_TYPE_ACCESS); > + posix_acl_release(acl); > + return ret; > +} > EXPORT_SYMBOL(posix_acl_chmod); > > struct posix_acl *get_acl(struct inode *inode, int type) > diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c > index 6f721ea..ea4e443 100644 > --- a/fs/reiserfs/xattr_acl.c > +++ b/fs/reiserfs/xattr_acl.c > @@ -463,7 +463,7 @@ int reiserfs_acl_chmod(struct inode *inode) > return 0; > if (IS_ERR(acl)) > return PTR_ERR(acl); > - error = posix_acl_chmod(&acl, GFP_NOFS, inode->i_mode); > + error = __posix_acl_chmod(&acl, GFP_NOFS, inode->i_mode); > if (error) > return error; > > diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c > index 370eb3e..4eac105 100644 > --- a/fs/xfs/xfs_acl.c > +++ b/fs/xfs/xfs_acl.c > @@ -334,7 +334,7 @@ xfs_acl_chmod(struct inode *inode) > if (IS_ERR(acl) || !acl) > return PTR_ERR(acl); > > - error = posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > + error = __posix_acl_chmod(&acl, GFP_KERNEL, inode->i_mode); > if (error) > return error; > > diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h > index a8d9918..8b64e78 100644 > --- a/include/linux/posix_acl.h > +++ b/include/linux/posix_acl.h > @@ -89,12 +89,14 @@ 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_chmod(struct posix_acl **, gfp_t, umode_t); > +extern int __posix_acl_chmod(struct posix_acl **, gfp_t, umode_t); > > 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 *); > + > static inline struct posix_acl **acl_by_type(struct inode *inode, int type) > { > switch (type) { > @@ -165,15 +167,22 @@ static inline void forget_all_cached_acls(struct inode *inode) > if (old_default != ACL_NOT_CACHED) > posix_acl_release(old_default); > } > -#endif > > static inline void cache_no_acl(struct inode *inode) > { > -#ifdef CONFIG_FS_POSIX_ACL > inode->i_acl = NULL; > inode->i_default_acl = NULL; > -#endif > } > +#else > +static inline int posix_acl_chmod(struct inode *inode) > +{ > + return 0; > +} > + > +static inline void cache_no_acl(struct inode *inode) > +{ > +} > +#endif /* CONFIG_FS_POSIX_ACL */ > > struct posix_acl *get_acl(struct inode *inode, int type); > > -- > 1.7.10.4 > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Jan Kara SUSE Labs, CR