55 static char *get_dname(struct dentry *dentry)  in get_dname()  argument
59 	int len = dentry->d_name.len;  in get_dname()
61 	dname = dentry->d_name.name;  in get_dname()
71 				 struct inode *inode, struct dentry *dentry,  in tracefs_syscall_mkdir()  argument
77 	name = get_dname(dentry);  in tracefs_syscall_mkdir()
95 static int tracefs_syscall_rmdir(struct inode *inode, struct dentry *dentry)  in tracefs_syscall_rmdir()  argument
100 	name = get_dname(dentry);  in tracefs_syscall_rmdir()
112 	inode_unlock(d_inode(dentry));  in tracefs_syscall_rmdir()
117 	inode_lock(d_inode(dentry));  in tracefs_syscall_rmdir()
166 static void change_gid(struct dentry *dentry, kgid_t gid)  in change_gid()  argument
168 	if (!dentry->d_inode)  in change_gid()
170 	dentry->d_inode->i_gid = gid;  in change_gid()
180 static void set_gid(struct dentry *parent, kgid_t gid)  in set_gid()
182 	struct dentry *this_parent;  in set_gid()
194 		struct dentry *dentry = list_entry(tmp, struct dentry, d_child);  in set_gid()  local
197 		spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);  in set_gid()
199 		change_gid(dentry, gid);  in set_gid()
201 		if (!list_empty(&dentry->d_subdirs)) {  in set_gid()
203 			spin_release(&dentry->d_lock.dep_map, _RET_IP_);  in set_gid()
204 			this_parent = dentry;  in set_gid()
208 		spin_unlock(&dentry->d_lock);  in set_gid()
216 		struct dentry *child = this_parent;  in set_gid()
227 			child = list_entry(next, struct dentry, d_child);  in set_gid()
331 static int tracefs_show_options(struct seq_file *m, struct dentry *root)  in tracefs_show_options()
387 static struct dentry *trace_mount(struct file_system_type *fs_type,  in trace_mount()
402 static struct dentry *start_creating(const char *name, struct dentry *parent)  in start_creating()
404 	struct dentry *dentry;  in start_creating()  local
424 		dentry = ERR_PTR(-ENOENT);  in start_creating()
426 		dentry = lookup_one_len(name, parent, strlen(name));  in start_creating()
427 	if (!IS_ERR(dentry) && d_inode(dentry)) {  in start_creating()
428 		dput(dentry);  in start_creating()
429 		dentry = ERR_PTR(-EEXIST);  in start_creating()
432 	if (IS_ERR(dentry)) {  in start_creating()
437 	return dentry;  in start_creating()
440 static struct dentry *failed_creating(struct dentry *dentry)  in failed_creating()  argument
442 	inode_unlock(d_inode(dentry->d_parent));  in failed_creating()
443 	dput(dentry);  in failed_creating()
448 static struct dentry *end_creating(struct dentry *dentry)  in end_creating()  argument
450 	inode_unlock(d_inode(dentry->d_parent));  in end_creating()
451 	return dentry;  in end_creating()
480 struct dentry *tracefs_create_file(const char *name, umode_t mode,  in tracefs_create_file()
481 				   struct dentry *parent, void *data,  in tracefs_create_file()
484 	struct dentry *dentry;  in tracefs_create_file()  local
493 	dentry = start_creating(name, parent);  in tracefs_create_file()
495 	if (IS_ERR(dentry))  in tracefs_create_file()
498 	inode = tracefs_get_inode(dentry->d_sb);  in tracefs_create_file()
500 		return failed_creating(dentry);  in tracefs_create_file()
505 	inode->i_uid = d_inode(dentry->d_parent)->i_uid;  in tracefs_create_file()
506 	inode->i_gid = d_inode(dentry->d_parent)->i_gid;  in tracefs_create_file()
507 	d_instantiate(dentry, inode);  in tracefs_create_file()
508 	fsnotify_create(d_inode(dentry->d_parent), dentry);  in tracefs_create_file()
509 	return end_creating(dentry);  in tracefs_create_file()
512 static struct dentry *__create_dir(const char *name, struct dentry *parent,  in __create_dir()
515 	struct dentry *dentry = start_creating(name, parent);  in __create_dir()  local
518 	if (IS_ERR(dentry))  in __create_dir()
521 	inode = tracefs_get_inode(dentry->d_sb);  in __create_dir()
523 		return failed_creating(dentry);  in __create_dir()
529 	inode->i_uid = d_inode(dentry->d_parent)->i_uid;  in __create_dir()
530 	inode->i_gid = d_inode(dentry->d_parent)->i_gid;  in __create_dir()
534 	d_instantiate(dentry, inode);  in __create_dir()
535 	inc_nlink(d_inode(dentry->d_parent));  in __create_dir()
536 	fsnotify_mkdir(d_inode(dentry->d_parent), dentry);  in __create_dir()
537 	return end_creating(dentry);  in __create_dir()
557 struct dentry *tracefs_create_dir(const char *name, struct dentry *parent)  in tracefs_create_dir()
579 __init struct dentry *tracefs_create_instance_dir(const char *name,  in tracefs_create_instance_dir()
580 					  struct dentry *parent,  in tracefs_create_instance_dir()
584 	struct dentry *dentry;  in tracefs_create_instance_dir()  local
590 	dentry = __create_dir(name, parent, &tracefs_dir_inode_operations);  in tracefs_create_instance_dir()
591 	if (!dentry)  in tracefs_create_instance_dir()
597 	return dentry;  in tracefs_create_instance_dir()
600 static void remove_one(struct dentry *victim)  in remove_one()
613 void tracefs_remove(struct dentry *dentry)  in tracefs_remove()  argument
615 	if (IS_ERR_OR_NULL(dentry))  in tracefs_remove()
619 	simple_recursive_removal(dentry, remove_one);  in tracefs_remove()