45 static void configfs_d_iput(struct dentry * dentry,  in configfs_d_iput()  argument
48 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_d_iput()
59 		if (sd->s_dentry == dentry)  in configfs_d_iput()
243 			 struct dentry * dentry, void * element,  in configfs_make_dirent()  argument
253 	sd->s_dentry = dentry;  in configfs_make_dirent()
254 	if (dentry)  in configfs_make_dirent()
255 		dentry->d_fsdata = configfs_get(sd);  in configfs_make_dirent()
260 static void configfs_remove_dirent(struct dentry *dentry)  in configfs_remove_dirent()  argument
262 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_remove_dirent()
282 static int configfs_create_dir(struct config_item *item, struct dentry *dentry,  in configfs_create_dir()  argument
287 	struct dentry *p = dentry->d_parent;  in configfs_create_dir()
292 	error = configfs_dirent_exists(p->d_fsdata, dentry->d_name.name);  in configfs_create_dir()
296 	error = configfs_make_dirent(p->d_fsdata, dentry, item, mode,  in configfs_create_dir()
302 	configfs_set_dir_dirent_depth(p->d_fsdata, dentry->d_fsdata);  in configfs_create_dir()
303 	inode = configfs_create(dentry, mode);  in configfs_create_dir()
311 	d_instantiate(dentry, inode);  in configfs_create_dir()
313 	dget(dentry);  /* pin directory dentries in core */  in configfs_create_dir()
315 	item->ci_dentry = dentry;  in configfs_create_dir()
319 	configfs_put(dentry->d_fsdata);  in configfs_create_dir()
320 	configfs_remove_dirent(dentry);  in configfs_create_dir()
362 int configfs_create_link(struct configfs_dirent *target, struct dentry *parent,  in configfs_create_link()
363 		struct dentry *dentry, char *body)  in configfs_create_link()  argument
370 	err = configfs_make_dirent(p, dentry, target, mode, CONFIGFS_ITEM_LINK,  in configfs_create_link()
375 	inode = configfs_create(dentry, mode);  in configfs_create_link()
381 	d_instantiate(dentry, inode);  in configfs_create_link()
382 	dget(dentry);  /* pin link dentries in core */  in configfs_create_link()
386 	configfs_put(dentry->d_fsdata);  in configfs_create_link()
387 	configfs_remove_dirent(dentry);  in configfs_create_link()
391 static void remove_dir(struct dentry * d)  in remove_dir()
393 	struct dentry * parent = dget(d->d_parent);  in remove_dir()
418 	struct dentry * dentry = dget(item->ci_dentry);  in configfs_remove_dir()  local
420 	if (!dentry)  in configfs_remove_dir()
423 	remove_dir(dentry);  in configfs_remove_dir()
427 	dput(dentry);  in configfs_remove_dir()
430 static struct dentry * configfs_lookup(struct inode *dir,  in configfs_lookup()
431 				       struct dentry *dentry,  in configfs_lookup()  argument
434 	struct configfs_dirent * parent_sd = dentry->d_parent->d_fsdata;  in configfs_lookup()
438 	if (dentry->d_name.len > NAME_MAX)  in configfs_lookup()
455 		    !strcmp(configfs_get_name(sd), dentry->d_name.name)) {  in configfs_lookup()
459 			dentry->d_fsdata = configfs_get(sd);  in configfs_lookup()
460 			sd->s_dentry = dentry;  in configfs_lookup()
463 			inode = configfs_create(dentry, mode);  in configfs_lookup()
480 	d_add(dentry, inode);  in configfs_lookup()
492 static int configfs_detach_prep(struct dentry *dentry, struct dentry **wait)  in configfs_detach_prep()  argument
494 	struct configfs_dirent *parent_sd = dentry->d_fsdata;  in configfs_detach_prep()
539 static void configfs_detach_rollback(struct dentry *dentry)  in configfs_detach_rollback()  argument
541 	struct configfs_dirent *parent_sd = dentry->d_fsdata;  in configfs_detach_rollback()
553 	struct dentry * dentry = dget(item->ci_dentry);  in detach_attrs()  local
557 	if (!dentry)  in detach_attrs()
561 		 dentry->d_name.name);  in detach_attrs()
563 	parent_sd = dentry->d_fsdata;  in detach_attrs()
570 		configfs_drop_dentry(sd, dentry);  in detach_attrs()
577 	dput(dentry);  in detach_attrs()
612 				 struct dentry *dentry,
618 	struct dentry * dentry = dget(group->cg_item.ci_dentry);  in detach_groups()  local
619 	struct dentry *child;  in detach_groups()
623 	if (!dentry)  in detach_groups()
626 	parent_sd = dentry->d_fsdata;  in detach_groups()
649 	dput(dentry);  in detach_groups()
667 	struct dentry *child, *parent = parent_group->cg_item.ci_dentry;  in create_default_group()
813 				struct dentry *dentry,  in configfs_attach_item()  argument
818 	ret = configfs_create_dir(item, dentry, frag);  in configfs_attach_item()
827 			inode_lock(d_inode(dentry));  in configfs_attach_item()
829 			d_inode(dentry)->i_flags |= S_DEAD;  in configfs_attach_item()
830 			dont_mount(dentry);  in configfs_attach_item()
831 			inode_unlock(d_inode(dentry));  in configfs_attach_item()
832 			d_delete(dentry);  in configfs_attach_item()
848 				 struct dentry *dentry,  in configfs_attach_group()  argument
854 	ret = configfs_attach_item(parent_item, item, dentry, frag);  in configfs_attach_group()
856 		sd = dentry->d_fsdata;  in configfs_attach_group()
868 		inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);  in configfs_attach_group()
873 			d_inode(dentry)->i_flags |= S_DEAD;  in configfs_attach_group()
874 			dont_mount(dentry);  in configfs_attach_group()
877 		inode_unlock(d_inode(dentry));  in configfs_attach_group()
879 			d_delete(dentry);  in configfs_attach_group()
1034 static int configfs_depend_prep(struct dentry *origin,  in configfs_depend_prep()
1064 static int configfs_do_depend_item(struct dentry *subsys_dentry,  in configfs_do_depend_item()
1114 	struct dentry *root;  in configfs_depend_item()
1255 			  struct dentry *dentry, umode_t mode)  in configfs_mkdir()  argument
1269 	sd = dentry->d_parent->d_fsdata;  in configfs_mkdir()
1292 	parent_item = configfs_get_config_item(dentry->d_parent);  in configfs_mkdir()
1319 	name = kmalloc(dentry->d_name.len + 1, GFP_KERNEL);  in configfs_mkdir()
1325 	snprintf(name, dentry->d_name.len + 1, "%s", dentry->d_name.name);  in configfs_mkdir()
1393 		ret = configfs_attach_group(parent_item, item, dentry, frag);  in configfs_mkdir()
1395 		ret = configfs_attach_item(parent_item, item, dentry, frag);  in configfs_mkdir()
1400 		configfs_dir_set_ready(dentry->d_fsdata);  in configfs_mkdir()
1438 static int configfs_rmdir(struct inode *dir, struct dentry *dentry)  in configfs_rmdir()  argument
1448 	sd = dentry->d_fsdata;  in configfs_rmdir()
1453 	parent_item = configfs_get_config_item(dentry->d_parent);  in configfs_rmdir()
1471 		struct dentry *wait;  in configfs_rmdir()
1482 			ret = configfs_detach_prep(dentry, &wait);  in configfs_rmdir()
1484 				configfs_detach_rollback(dentry);  in configfs_rmdir()
1505 		configfs_detach_rollback(dentry);  in configfs_rmdir()
1514 	item = configfs_get_config_item(dentry);  in configfs_rmdir()
1564 	struct dentry * dentry = file->f_path.dentry;  in configfs_dir_open()  local
1565 	struct configfs_dirent * parent_sd = dentry->d_fsdata;  in configfs_dir_open()
1568 	inode_lock(d_inode(dentry));  in configfs_dir_open()
1581 	inode_unlock(d_inode(dentry));  in configfs_dir_open()
1588 	struct dentry * dentry = file->f_path.dentry;  in configfs_dir_close()  local
1591 	inode_lock(d_inode(dentry));  in configfs_dir_close()
1595 	inode_unlock(d_inode(dentry));  in configfs_dir_close()
1604 	struct dentry *dentry = file->f_path.dentry;  in configfs_readdir()  local
1605 	struct super_block *sb = dentry->d_sb;  in configfs_readdir()
1606 	struct configfs_dirent * parent_sd = dentry->d_fsdata;  in configfs_readdir()
1639 		dentry = next->s_dentry;  in configfs_readdir()
1640 		if (dentry)  in configfs_readdir()
1641 			inode = d_inode(dentry);  in configfs_readdir()
1666 	struct dentry * dentry = file->f_path.dentry;  in configfs_dir_lseek()  local
1682 			struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_dir_lseek()
1727 	struct dentry *parent;  in configfs_register_group()
1771 	struct dentry *dentry = group->cg_item.ci_dentry;  in configfs_unregister_group()  local
1772 	struct dentry *parent = group->cg_item.ci_parent->ci_dentry;  in configfs_unregister_group()
1773 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_unregister_group()
1782 	configfs_detach_prep(dentry, NULL);  in configfs_unregister_group()
1786 	d_inode(dentry)->i_flags |= S_DEAD;  in configfs_unregister_group()
1787 	dont_mount(dentry);  in configfs_unregister_group()
1788 	d_drop(dentry);  in configfs_unregister_group()
1789 	fsnotify_rmdir(d_inode(parent), dentry);  in configfs_unregister_group()
1792 	dput(dentry);  in configfs_unregister_group()
1848 	struct dentry *dentry;  in configfs_register_subsystem()  local
1849 	struct dentry *root;  in configfs_register_subsystem()
1874 	dentry = d_alloc_name(root, group->cg_item.ci_name);  in configfs_register_subsystem()
1875 	if (dentry) {  in configfs_register_subsystem()
1876 		d_add(dentry, NULL);  in configfs_register_subsystem()
1879 					    dentry, frag);  in configfs_register_subsystem()
1881 			BUG_ON(d_inode(dentry));  in configfs_register_subsystem()
1882 			d_drop(dentry);  in configfs_register_subsystem()
1883 			dput(dentry);  in configfs_register_subsystem()
1886 			configfs_dir_set_ready(dentry->d_fsdata);  in configfs_register_subsystem()
1907 	struct dentry *dentry = group->cg_item.ci_dentry;  in configfs_unregister_subsystem()  local
1908 	struct dentry *root = dentry->d_sb->s_root;  in configfs_unregister_subsystem()
1909 	struct configfs_dirent *sd = dentry->d_fsdata;  in configfs_unregister_subsystem()
1912 	if (dentry->d_parent != root) {  in configfs_unregister_subsystem()
1923 	inode_lock_nested(d_inode(dentry), I_MUTEX_CHILD);  in configfs_unregister_subsystem()
1926 	if (configfs_detach_prep(dentry, NULL)) {  in configfs_unregister_subsystem()
1932 	d_inode(dentry)->i_flags |= S_DEAD;  in configfs_unregister_subsystem()
1933 	dont_mount(dentry);  in configfs_unregister_subsystem()
1934 	inode_unlock(d_inode(dentry));  in configfs_unregister_subsystem()
1936 	d_drop(dentry);  in configfs_unregister_subsystem()
1937 	fsnotify_rmdir(d_inode(root), dentry);  in configfs_unregister_subsystem()
1941 	dput(dentry);  in configfs_unregister_subsystem()