15 static int ovl_copy_up_last(struct dentry *dentry, struct iattr *attr,  in ovl_copy_up_last()  argument
19 	struct dentry *parent;  in ovl_copy_up_last()
23 	parent = dget_parent(dentry);  in ovl_copy_up_last()
28 	ovl_path_lower(dentry, &lowerpath);  in ovl_copy_up_last()
36 	err = ovl_copy_up_one(parent, dentry, &lowerpath, &stat, attr);  in ovl_copy_up_last()
43 int ovl_setattr(struct dentry *dentry, struct iattr *attr)  in ovl_setattr()  argument
46 	struct dentry *upperdentry;  in ovl_setattr()
57 	err = inode_change_ok(dentry->d_inode, attr);  in ovl_setattr()
61 	err = ovl_want_write(dentry);  in ovl_setattr()
65 	err = ovl_copy_up(dentry);  in ovl_setattr()
67 		upperdentry = ovl_dentry_upper(dentry);  in ovl_setattr()
72 			ovl_copyattr(upperdentry->d_inode, dentry->d_inode);  in ovl_setattr()
75 	ovl_drop_write(dentry);  in ovl_setattr()
80 static int ovl_getattr(struct vfsmount *mnt, struct dentry *dentry,  in ovl_getattr()  argument
85 	ovl_path_real(dentry, &realpath);  in ovl_getattr()
92 	struct dentry *alias = NULL;  in ovl_permission()
94 	struct dentry *realdentry;  in ovl_permission()
154 	struct dentry *realdentry;
158 static void *ovl_follow_link(struct dentry *dentry, struct nameidata *nd)  in ovl_follow_link()  argument
161 	struct dentry *realdentry;  in ovl_follow_link()
164 	realdentry = ovl_dentry_real(dentry);  in ovl_follow_link()
191 static void ovl_put_link(struct dentry *dentry, struct nameidata *nd, void *c)  in ovl_put_link()  argument
204 static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz)  in ovl_readlink()  argument
209 	ovl_path_real(dentry, &realpath);  in ovl_readlink()
210 	realinode = realpath.dentry->d_inode;  in ovl_readlink()
217 	return realinode->i_op->readlink(realpath.dentry, buf, bufsiz);  in ovl_readlink()
226 int ovl_setxattr(struct dentry *dentry, const char *name,  in ovl_setxattr()  argument
230 	struct dentry *upperdentry;  in ovl_setxattr()
232 	err = ovl_want_write(dentry);  in ovl_setxattr()
240 	err = ovl_copy_up(dentry);  in ovl_setxattr()
244 	upperdentry = ovl_dentry_upper(dentry);  in ovl_setxattr()
248 	ovl_drop_write(dentry);  in ovl_setxattr()
253 static bool ovl_need_xattr_filter(struct dentry *dentry,  in ovl_need_xattr_filter()  argument
257 		return S_ISDIR(dentry->d_inode->i_mode);  in ovl_need_xattr_filter()
262 ssize_t ovl_getxattr(struct dentry *dentry, const char *name,  in ovl_getxattr()  argument
266 	enum ovl_path_type type = ovl_path_real(dentry, &realpath);  in ovl_getxattr()
268 	if (ovl_need_xattr_filter(dentry, type) && ovl_is_private_xattr(name))  in ovl_getxattr()
271 	return vfs_getxattr(realpath.dentry, name, value, size);  in ovl_getxattr()
274 ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)  in ovl_listxattr()  argument
277 	enum ovl_path_type type = ovl_path_real(dentry, &realpath);  in ovl_listxattr()
281 	res = vfs_listxattr(realpath.dentry, list, size);  in ovl_listxattr()
285 	if (!ovl_need_xattr_filter(dentry, type))  in ovl_listxattr()
306 int ovl_removexattr(struct dentry *dentry, const char *name)  in ovl_removexattr()  argument
310 	enum ovl_path_type type = ovl_path_real(dentry, &realpath);  in ovl_removexattr()
312 	err = ovl_want_write(dentry);  in ovl_removexattr()
317 	if (ovl_need_xattr_filter(dentry, type) && ovl_is_private_xattr(name))  in ovl_removexattr()
321 		err = vfs_getxattr(realpath.dentry, name, NULL, 0);  in ovl_removexattr()
325 		err = ovl_copy_up(dentry);  in ovl_removexattr()
329 		ovl_path_upper(dentry, &realpath);  in ovl_removexattr()
332 	err = vfs_removexattr(realpath.dentry, name);  in ovl_removexattr()
334 	ovl_drop_write(dentry);  in ovl_removexattr()
340 				  struct dentry *realdentry)  in ovl_open_need_copy_up()
354 struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags)  in ovl_d_select_inode()  argument
360 	if (d_is_dir(dentry))  in ovl_d_select_inode()
361 		return d_backing_inode(dentry);  in ovl_d_select_inode()
363 	type = ovl_path_real(dentry, &realpath);  in ovl_d_select_inode()
364 	if (ovl_open_need_copy_up(file_flags, type, realpath.dentry)) {  in ovl_d_select_inode()
365 		err = ovl_want_write(dentry);  in ovl_d_select_inode()
370 			err = ovl_copy_up_last(dentry, NULL, true);  in ovl_d_select_inode()
372 			err = ovl_copy_up(dentry);  in ovl_d_select_inode()
373 		ovl_drop_write(dentry);  in ovl_d_select_inode()
377 		ovl_path_upper(dentry, &realpath);  in ovl_d_select_inode()
380 	return d_backing_inode(realpath.dentry);  in ovl_d_select_inode()