From: Christoph Hellwig Date: Fri, 20 Dec 2013 13:16:41 +0000 (-0800) Subject: fs: make posix_acl_chmod more useful X-Git-Tag: firefly_0821_release~176^2~4554^2~19 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5bf3258fd2ac;p=firefly-linux-kernel-4.4.55.git fs: make posix_acl_chmod more useful 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. Signed-off-by: Christoph Hellwig Reviewed-by: Jan Kara Signed-off-by: Al Viro --- diff --git a/fs/9p/acl.c b/fs/9p/acl.c index 7af425f53bee..f5ce5c50c57e 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 0890c83643e9..1af04ff88986 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 110b6b371a4e..7006ced45324 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 dbb5ad59a7fc..6691a6c6b211 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 39a54a0e9fe4..2eebe02fdf09 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 d0fc287efeff..14c4df0ede34 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 b3f3676796d3..46a5076e9776 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 f69ac0af5496..3e200c7ca7ad 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 b609cc14c72e..cab5fd6fdb72 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 223283c30111..5853969a51bc 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 d254d6d35995..9c0fca8073da 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 b4f788e0ca31..73ccf0e22ec5 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 e699b076cdd8..08218550b0db 100644 --- a/fs/posix_acl.c +++ b/fs/posix_acl.c @@ -364,7 +364,7 @@ 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; @@ -428,12 +428,12 @@ 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; @@ -443,6 +443,30 @@ 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 (!IS_POSIXACL(inode)) + return 0; + if (!inode->i_op->set_acl) + return -EOPNOTSUPP; + + 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); /* diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index 6f721ea94039..ea4e44351f76 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 370eb3e121d1..4eac1058b680 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 a8d9918c0b20..8b64e7899989 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);