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authorChristoph Hellwig <hch@infradead.org>2013-12-20 05:16:41 -0800
committerAl Viro <viro@zeniv.linux.org.uk>2014-01-25 23:58:18 -0500
commit5bf3258fd2acd8515450ab8efcd97c9d3b69f7f9 (patch)
tree117a3aba664aa9859cc346bdedbaf1c54c39d7a1
parent2aeccbe957d0d2b9fbb2a236e53a955097e2a9ce (diff)
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 <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/9p/acl.c2
-rw-r--r--fs/btrfs/acl.c2
-rw-r--r--fs/ext2/acl.c2
-rw-r--r--fs/ext3/acl.c2
-rw-r--r--fs/ext4/acl.c2
-rw-r--r--fs/f2fs/acl.c2
-rw-r--r--fs/generic_acl.c2
-rw-r--r--fs/gfs2/acl.c2
-rw-r--r--fs/hfsplus/posix_acl.c2
-rw-r--r--fs/jffs2/acl.c2
-rw-r--r--fs/jfs/acl.c2
-rw-r--r--fs/ocfs2/acl.c2
-rw-r--r--fs/posix_acl.c30
-rw-r--r--fs/reiserfs/xattr_acl.c2
-rw-r--r--fs/xfs/xfs_acl.c2
-rw-r--r--include/linux/posix_acl.h17
16 files changed, 54 insertions, 21 deletions
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);