1 files changed, 8 insertions, 73 deletions

diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index a02aa59d1e24..1acb2ff505e6 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1256,7 +1256,7 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode,
 		 * Inode length changed, so we have to make sure
 		 * @I_DIRTY_DATASYNC is set.
 		 */
-		 __mark_inode_dirty(inode, I_DIRTY_SYNC | I_DIRTY_DATASYNC);
+		 __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
 	else
 		mark_inode_dirty_sync(inode);
 	mutex_unlock(&ui->ui_mutex);
@@ -1284,13 +1284,9 @@ int ubifs_setattr(struct dentry *dentry, struct iattr *attr)
 	if (err)
 		return err;
 
-	if (ubifs_crypt_is_encrypted(inode) && (attr->ia_valid & ATTR_SIZE)) {
-		err = fscrypt_get_encryption_info(inode);
-		if (err)
-			return err;
-		if (!fscrypt_has_encryption_key(inode))
-			return -ENOKEY;
-	}
+	err = fscrypt_prepare_setattr(dentry, attr);
+	if (err)
+		return err;
 
 	if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size < inode->i_size)
 		/* Truncation to a smaller size */
@@ -1406,7 +1402,7 @@ int ubifs_update_time(struct inode *inode, struct timespec *time,
 	if (flags & S_MTIME)
 		inode->i_mtime = *time;
 
-	if (!(inode->i_sb->s_flags & MS_LAZYTIME))
+	if (!(inode->i_sb->s_flags & SB_LAZYTIME))
 		iflags |= I_DIRTY_SYNC;
 
 	release = ui->dirty;
@@ -1629,82 +1625,21 @@ static int ubifs_file_mmap(struct file *file, struct vm_area_struct *vma)
 	return 0;
 }
 
-static int ubifs_file_open(struct inode *inode, struct file *filp)
-{
-	int ret;
-	struct dentry *dir;
-	struct ubifs_info *c = inode->i_sb->s_fs_info;
-
-	if (ubifs_crypt_is_encrypted(inode)) {
-		ret = fscrypt_get_encryption_info(inode);
-		if (ret)
-			return -EACCES;
-		if (!fscrypt_has_encryption_key(inode))
-			return -ENOKEY;
-	}
-
-	dir = dget_parent(file_dentry(filp));
-	if (ubifs_crypt_is_encrypted(d_inode(dir)) &&
-			!fscrypt_has_permitted_context(d_inode(dir), inode)) {
-		ubifs_err(c, "Inconsistent encryption contexts: %lu/%lu",
-			  (unsigned long) d_inode(dir)->i_ino,
-			  (unsigned long) inode->i_ino);
-		dput(dir);
-		ubifs_ro_mode(c, -EPERM);
-		return -EPERM;
-	}
-	dput(dir);
-
-	return 0;
-}
-
 static const char *ubifs_get_link(struct dentry *dentry,
 					    struct inode *inode,
 					    struct delayed_call *done)
 {
-	int err;
-	struct fscrypt_symlink_data *sd;
 	struct ubifs_inode *ui = ubifs_inode(inode);
-	struct fscrypt_str cstr;
-	struct fscrypt_str pstr;
 
-	if (!ubifs_crypt_is_encrypted(inode))
+	if (!IS_ENCRYPTED(inode))
 		return ui->data;
 
 	if (!dentry)
 		return ERR_PTR(-ECHILD);
 
-	err = fscrypt_get_encryption_info(inode);
-	if (err)
-		return ERR_PTR(err);
-
-	sd = (struct fscrypt_symlink_data *)ui->data;
-	cstr.name = sd->encrypted_path;
-	cstr.len = le16_to_cpu(sd->len);
-
-	if (cstr.len == 0)
-		return ERR_PTR(-ENOENT);
-
-	if ((cstr.len + sizeof(struct fscrypt_symlink_data) - 1) > ui->data_len)
-		return ERR_PTR(-EIO);
-
-	err = fscrypt_fname_alloc_buffer(inode, cstr.len, &pstr);
-	if (err)
-		return ERR_PTR(err);
-
-	err = fscrypt_fname_disk_to_usr(inode, 0, 0, &cstr, &pstr);
-	if (err) {
-		fscrypt_fname_free_buffer(&pstr);
-		return ERR_PTR(err);
-	}
-
-	pstr.name[pstr.len] = '\0';
-
-	set_delayed_call(done, kfree_link, pstr.name);
-	return pstr.name;
+	return fscrypt_get_symlink(inode, ui->data, ui->data_len, done);
 }
 
-
 const struct address_space_operations ubifs_file_address_operations = {
 	.readpage       = ubifs_readpage,
 	.writepage      = ubifs_writepage,
@@ -1746,7 +1681,7 @@ const struct file_operations ubifs_file_operations = {
 	.unlocked_ioctl = ubifs_ioctl,
 	.splice_read	= generic_file_splice_read,
 	.splice_write	= iter_file_splice_write,
-	.open		= ubifs_file_open,
+	.open		= fscrypt_file_open,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl   = ubifs_compat_ioctl,
 #endif