46 			   struct dentry *dentry, struct iattr *ia)  in debugfs_setattr()  argument
55 	return simple_setattr(&nop_mnt_idmap, dentry, ia);  in debugfs_setattr()
206 static int debugfs_show_options(struct seq_file *m, struct dentry *root)  in debugfs_show_options()
237 static void debugfs_release_dentry(struct dentry *dentry)  in debugfs_release_dentry()  argument
239 	void *fsd = dentry->d_fsdata;  in debugfs_release_dentry()
242 		kfree(dentry->d_fsdata);  in debugfs_release_dentry()
248 	f = (debugfs_automount_t)path->dentry->d_fsdata;  in debugfs_automount()
249 	return f(path->dentry, d_inode(path->dentry)->i_private);  in debugfs_automount()
292 static struct dentry *debug_mount(struct file_system_type *fs_type,  in debug_mount()
322 struct dentry *debugfs_lookup(const char *name, struct dentry *parent)  in debugfs_lookup()
324 	struct dentry *dentry;  in debugfs_lookup()  local
332 	dentry = lookup_positive_unlocked(name, parent, strlen(name));  in debugfs_lookup()
333 	if (IS_ERR(dentry))  in debugfs_lookup()
335 	return dentry;  in debugfs_lookup()
339 static struct dentry *start_creating(const char *name, struct dentry *parent)  in start_creating()
341 	struct dentry *dentry;  in start_creating()  local
372 		dentry = ERR_PTR(-ENOENT);  in start_creating()
374 		dentry = lookup_one_len(name, parent, strlen(name));  in start_creating()
375 	if (!IS_ERR(dentry) && d_really_is_positive(dentry)) {  in start_creating()
376 		if (d_is_dir(dentry))  in start_creating()
382 		dput(dentry);  in start_creating()
383 		dentry = ERR_PTR(-EEXIST);  in start_creating()
386 	if (IS_ERR(dentry)) {  in start_creating()
391 	return dentry;  in start_creating()
394 static struct dentry *failed_creating(struct dentry *dentry)  in failed_creating()  argument
396 	inode_unlock(d_inode(dentry->d_parent));  in failed_creating()
397 	dput(dentry);  in failed_creating()
402 static struct dentry *end_creating(struct dentry *dentry)  in end_creating()  argument
404 	inode_unlock(d_inode(dentry->d_parent));  in end_creating()
405 	return dentry;  in end_creating()
408 static struct dentry *__debugfs_create_file(const char *name, umode_t mode,  in __debugfs_create_file()
409 				struct dentry *parent, void *data,  in __debugfs_create_file()
413 	struct dentry *dentry;  in __debugfs_create_file()  local
419 	dentry = start_creating(name, parent);  in __debugfs_create_file()
421 	if (IS_ERR(dentry))  in __debugfs_create_file()
422 		return dentry;  in __debugfs_create_file()
425 		failed_creating(dentry);  in __debugfs_create_file()
429 	inode = debugfs_get_inode(dentry->d_sb);  in __debugfs_create_file()
433 		return failed_creating(dentry);  in __debugfs_create_file()
441 	dentry->d_fsdata = (void *)((unsigned long)real_fops |  in __debugfs_create_file()
444 	d_instantiate(dentry, inode);  in __debugfs_create_file()
445 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in __debugfs_create_file()
446 	return end_creating(dentry);  in __debugfs_create_file()
481 struct dentry *debugfs_create_file(const char *name, umode_t mode,  in debugfs_create_file()
482 				   struct dentry *parent, void *data,  in debugfs_create_file()
520 struct dentry *debugfs_create_file_unsafe(const char *name, umode_t mode,  in debugfs_create_file_unsafe()
521 				   struct dentry *parent, void *data,  in debugfs_create_file_unsafe()
552 			      struct dentry *parent, void *data,  in debugfs_create_file_size()
556 	struct dentry *de = debugfs_create_file(name, mode, parent, data, fops);  in debugfs_create_file_size()
587 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)  in debugfs_create_dir()
589 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_dir()  local
592 	if (IS_ERR(dentry))  in debugfs_create_dir()
593 		return dentry;  in debugfs_create_dir()
596 		failed_creating(dentry);  in debugfs_create_dir()
600 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_dir()
604 		return failed_creating(dentry);  in debugfs_create_dir()
613 	d_instantiate(dentry, inode);  in debugfs_create_dir()
614 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_dir()
615 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_dir()
616 	return end_creating(dentry);  in debugfs_create_dir()
631 struct dentry *debugfs_create_automount(const char *name,  in debugfs_create_automount()
632 					struct dentry *parent,  in debugfs_create_automount()
636 	struct dentry *dentry = start_creating(name, parent);  in debugfs_create_automount()  local
639 	if (IS_ERR(dentry))  in debugfs_create_automount()
640 		return dentry;  in debugfs_create_automount()
643 		failed_creating(dentry);  in debugfs_create_automount()
647 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_automount()
651 		return failed_creating(dentry);  in debugfs_create_automount()
657 	dentry->d_fsdata = (void *)f;  in debugfs_create_automount()
660 	d_instantiate(dentry, inode);  in debugfs_create_automount()
661 	inc_nlink(d_inode(dentry->d_parent));  in debugfs_create_automount()
662 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in debugfs_create_automount()
663 	return end_creating(dentry);  in debugfs_create_automount()
690 struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,  in debugfs_create_symlink()
693 	struct dentry *dentry;  in debugfs_create_symlink()  local
699 	dentry = start_creating(name, parent);  in debugfs_create_symlink()
700 	if (IS_ERR(dentry)) {  in debugfs_create_symlink()
702 		return dentry;  in debugfs_create_symlink()
705 	inode = debugfs_get_inode(dentry->d_sb);  in debugfs_create_symlink()
710 		return failed_creating(dentry);  in debugfs_create_symlink()
715 	d_instantiate(dentry, inode);  in debugfs_create_symlink()
716 	return end_creating(dentry);  in debugfs_create_symlink()
720 static void __debugfs_file_removed(struct dentry *dentry)  in __debugfs_file_removed()  argument
731 	fsd = READ_ONCE(dentry->d_fsdata);  in __debugfs_file_removed()
738 static void remove_one(struct dentry *victim)  in remove_one()
758 void debugfs_remove(struct dentry *dentry)  in debugfs_remove()  argument
760 	if (IS_ERR_OR_NULL(dentry))  in debugfs_remove()
764 	simple_recursive_removal(dentry, remove_one);  in debugfs_remove()
778 void debugfs_lookup_and_remove(const char *name, struct dentry *parent)  in debugfs_lookup_and_remove()
780 	struct dentry *dentry;  in debugfs_lookup_and_remove()  local
782 	dentry = debugfs_lookup(name, parent);  in debugfs_lookup_and_remove()
783 	if (!dentry)  in debugfs_lookup_and_remove()
786 	debugfs_remove(dentry);  in debugfs_lookup_and_remove()
787 	dput(dentry);  in debugfs_lookup_and_remove()
810 struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,  in debugfs_rename()
811 		struct dentry *new_dir, const char *new_name)  in debugfs_rename()
814 	struct dentry *dentry = NULL, *trap;  in debugfs_rename()  local
832 	dentry = lookup_one_len(new_name, new_dir, strlen(new_name));  in debugfs_rename()
834 	if (IS_ERR(dentry) || dentry == trap || d_really_is_positive(dentry))  in debugfs_rename()
840 			      d_inode(new_dir), dentry, 0);  in debugfs_rename()
845 	d_move(old_dentry, dentry);  in debugfs_rename()
851 	dput(dentry);  in debugfs_rename()
854 	if (dentry && !IS_ERR(dentry))  in debugfs_rename()
855 		dput(dentry);  in debugfs_rename()
857 	if (IS_ERR(dentry))  in debugfs_rename()
858 		return dentry;  in debugfs_rename()